new render target class while working on the exhibit UI
[laserbrain_demo] / src / imgui / imgui_draw.cc
1 // dear imgui, v1.53 WIP
2 // (drawing and font code)
3
4 // Contains implementation for
5 // - Default styles
6 // - ImDrawList
7 // - ImDrawData
8 // - ImFontAtlas
9 // - ImFont
10 // - Default font data
11
12 #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
13 #define _CRT_SECURE_NO_WARNINGS
14 #endif
15
16 #include "imgui.h"
17 #define IMGUI_DEFINE_MATH_OPERATORS
18 #define IMGUI_DEFINE_PLACEMENT_NEW
19 #include "imgui_internal.h"
20
21 #include <stdio.h>      // vsnprintf, sscanf, printf
22 #if !defined(alloca)
23 #ifdef _WIN32
24 #include <malloc.h>     // alloca
25 #elif defined(__GLIBC__) || defined(__sun)
26 #include <alloca.h>     // alloca
27 #else
28 #include <stdlib.h>     // alloca
29 #endif
30 #endif
31
32 #ifdef _MSC_VER
33 #pragma warning (disable: 4505) // unreferenced local function has been removed (stb stuff)
34 #pragma warning (disable: 4996) // 'This function or variable may be unsafe': strcpy, strdup, sprintf, vsnprintf, sscanf, fopen
35 #define snprintf _snprintf
36 #endif
37
38 #ifdef __clang__
39 #pragma clang diagnostic ignored "-Wold-style-cast"         // warning : use of old-style cast                              // yes, they are more terse.
40 #pragma clang diagnostic ignored "-Wfloat-equal"            // warning : comparing floating point with == or != is unsafe   // storing and comparing against same constants ok.
41 #pragma clang diagnostic ignored "-Wglobal-constructors"    // warning : declaration requires a global destructor           // similar to above, not sure what the exact difference it.
42 #pragma clang diagnostic ignored "-Wsign-conversion"        // warning : implicit conversion changes signedness             //
43 #if __has_warning("-Wreserved-id-macro")
44 #pragma clang diagnostic ignored "-Wreserved-id-macro"      // warning : macro name is a reserved identifier                //
45 #endif
46 #if __has_warning("-Wdouble-promotion")
47 #pragma clang diagnostic ignored "-Wdouble-promotion"       // warning: implicit conversion from 'float' to 'double' when passing argument to function
48 #endif
49 #elif defined(__GNUC__)
50 #pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
51 #pragma GCC diagnostic ignored "-Wdouble-promotion"         // warning: implicit conversion from 'float' to 'double' when passing argument to function
52 #pragma GCC diagnostic ignored "-Wconversion"               // warning: conversion to 'xxxx' from 'xxxx' may alter its value
53 #pragma GCC diagnostic ignored "-Wcast-qual"                // warning: cast from type 'xxxx' to type 'xxxx' casts away qualifiers
54 #endif
55
56 //-------------------------------------------------------------------------
57 // STB libraries implementation
58 //-------------------------------------------------------------------------
59
60 //#define IMGUI_STB_NAMESPACE     ImGuiStb
61 //#define IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
62 //#define IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
63
64 #ifdef IMGUI_STB_NAMESPACE
65 namespace IMGUI_STB_NAMESPACE
66 {
67 #endif
68
69 #ifdef _MSC_VER
70 #pragma warning (push)
71 #pragma warning (disable: 4456)                             // declaration of 'xx' hides previous local declaration
72 #endif
73
74 #ifdef __clang__
75 #pragma clang diagnostic push
76 #pragma clang diagnostic ignored "-Wunused-function"
77 #pragma clang diagnostic ignored "-Wmissing-prototypes"
78 #endif
79
80 #ifdef __GNUC__
81 #pragma GCC diagnostic push
82 #pragma GCC diagnostic ignored "-Wtype-limits"              // warning: comparison is always true due to limited range of data type [-Wtype-limits]
83 #endif
84
85 #define STBRP_ASSERT(x)    IM_ASSERT(x)
86 #ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
87 #define STBRP_STATIC
88 #define STB_RECT_PACK_IMPLEMENTATION
89 #endif
90 #include "stb_rect_pack.h"
91
92 #define STBTT_malloc(x,u)  ((void)(u), ImGui::MemAlloc(x))
93 #define STBTT_free(x,u)    ((void)(u), ImGui::MemFree(x))
94 #define STBTT_assert(x)    IM_ASSERT(x)
95 #ifndef IMGUI_DISABLE_STB_TRUETYPE_IMPLEMENTATION
96 #define STBTT_STATIC
97 #define STB_TRUETYPE_IMPLEMENTATION
98 #else
99 #define STBTT_DEF extern
100 #endif
101 #include "stb_truetype.h"
102
103 #ifdef __GNUC__
104 #pragma GCC diagnostic pop
105 #endif
106
107 #ifdef __clang__
108 #pragma clang diagnostic pop
109 #endif
110
111 #ifdef _MSC_VER
112 #pragma warning (pop)
113 #endif
114
115 #ifdef IMGUI_STB_NAMESPACE
116 } // namespace ImGuiStb
117 using namespace IMGUI_STB_NAMESPACE;
118 #endif
119
120 //-----------------------------------------------------------------------------
121 // Style functions
122 //-----------------------------------------------------------------------------
123
124 void ImGui::StyleColorsClassic(ImGuiStyle* dst)
125 {
126     ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
127     ImVec4* colors = style->Colors;
128
129     colors[ImGuiCol_Text]                   = ImVec4(0.90f, 0.90f, 0.90f, 1.00f);
130     colors[ImGuiCol_TextDisabled]           = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
131     colors[ImGuiCol_WindowBg]               = ImVec4(0.00f, 0.00f, 0.00f, 0.70f);
132     colors[ImGuiCol_ChildBg]                = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
133     colors[ImGuiCol_PopupBg]                = ImVec4(0.11f, 0.11f, 0.14f, 0.92f);
134     colors[ImGuiCol_Border]                 = ImVec4(0.50f, 0.50f, 0.50f, 0.50f);
135     colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
136     colors[ImGuiCol_FrameBg]                = ImVec4(0.43f, 0.43f, 0.43f, 0.39f);
137     colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.47f, 0.47f, 0.69f, 0.40f);
138     colors[ImGuiCol_FrameBgActive]          = ImVec4(0.42f, 0.41f, 0.64f, 0.69f);
139     colors[ImGuiCol_TitleBg]                = ImVec4(0.27f, 0.27f, 0.54f, 0.83f);
140     colors[ImGuiCol_TitleBgActive]          = ImVec4(0.32f, 0.32f, 0.63f, 0.87f);
141     colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(0.40f, 0.40f, 0.80f, 0.20f);
142     colors[ImGuiCol_MenuBarBg]              = ImVec4(0.40f, 0.40f, 0.55f, 0.80f);
143     colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.20f, 0.25f, 0.30f, 0.60f);
144     colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.40f, 0.40f, 0.80f, 0.30f);
145     colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.40f, 0.40f, 0.80f, 0.40f);
146     colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
147     colors[ImGuiCol_CheckMark]              = ImVec4(0.90f, 0.90f, 0.90f, 0.50f);
148     colors[ImGuiCol_SliderGrab]             = ImVec4(1.00f, 1.00f, 1.00f, 0.30f);
149     colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.41f, 0.39f, 0.80f, 0.60f);
150     colors[ImGuiCol_Button]                 = ImVec4(0.35f, 0.40f, 0.61f, 0.62f);
151     colors[ImGuiCol_ButtonHovered]          = ImVec4(0.40f, 0.48f, 0.71f, 0.79f);
152     colors[ImGuiCol_ButtonActive]           = ImVec4(0.46f, 0.54f, 0.80f, 1.00f);
153     colors[ImGuiCol_Header]                 = ImVec4(0.40f, 0.40f, 0.90f, 0.45f);
154     colors[ImGuiCol_HeaderHovered]          = ImVec4(0.45f, 0.45f, 0.90f, 0.80f);
155     colors[ImGuiCol_HeaderActive]           = ImVec4(0.53f, 0.53f, 0.87f, 0.80f);
156     colors[ImGuiCol_Separator]              = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
157     colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.60f, 0.60f, 0.70f, 1.00f);
158     colors[ImGuiCol_SeparatorActive]        = ImVec4(0.70f, 0.70f, 0.90f, 1.00f);
159     colors[ImGuiCol_ResizeGrip]             = ImVec4(1.00f, 1.00f, 1.00f, 0.16f);
160     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.78f, 0.82f, 1.00f, 0.60f);
161     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.78f, 0.82f, 1.00f, 0.90f);
162     colors[ImGuiCol_CloseButton]            = ImVec4(0.50f, 0.50f, 0.90f, 0.50f);
163     colors[ImGuiCol_CloseButtonHovered]     = ImVec4(0.70f, 0.70f, 0.90f, 0.60f);
164     colors[ImGuiCol_CloseButtonActive]      = ImVec4(0.70f, 0.70f, 0.70f, 1.00f);
165     colors[ImGuiCol_PlotLines]              = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
166     colors[ImGuiCol_PlotLinesHovered]       = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
167     colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
168     colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
169     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.00f, 0.00f, 1.00f, 0.35f);
170     colors[ImGuiCol_ModalWindowDarkening]   = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
171 }
172
173 void ImGui::StyleColorsDark(ImGuiStyle* dst)
174 {
175     ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
176     ImVec4* colors = style->Colors;
177
178     colors[ImGuiCol_Text]                   = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
179     colors[ImGuiCol_TextDisabled]           = ImVec4(0.50f, 0.50f, 0.50f, 1.00f);
180     colors[ImGuiCol_WindowBg]               = ImVec4(0.06f, 0.06f, 0.06f, 0.94f);
181     colors[ImGuiCol_ChildBg]                = ImVec4(1.00f, 1.00f, 1.00f, 0.00f);
182     colors[ImGuiCol_PopupBg]                = ImVec4(0.08f, 0.08f, 0.08f, 0.94f);
183     colors[ImGuiCol_Border]                 = ImVec4(0.43f, 0.43f, 0.50f, 0.50f);
184     colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
185     colors[ImGuiCol_FrameBg]                = ImVec4(0.16f, 0.29f, 0.48f, 0.54f);
186     colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
187     colors[ImGuiCol_FrameBgActive]          = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
188     colors[ImGuiCol_TitleBg]                = ImVec4(0.04f, 0.04f, 0.04f, 1.00f);
189     colors[ImGuiCol_TitleBgActive]          = ImVec4(0.16f, 0.29f, 0.48f, 1.00f);
190     colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(0.00f, 0.00f, 0.00f, 0.51f);
191     colors[ImGuiCol_MenuBarBg]              = ImVec4(0.14f, 0.14f, 0.14f, 1.00f);
192     colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.02f, 0.02f, 0.02f, 0.53f);
193     colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.31f, 0.31f, 0.31f, 1.00f);
194     colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.41f, 0.41f, 0.41f, 1.00f);
195     colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.51f, 0.51f, 0.51f, 1.00f);
196     colors[ImGuiCol_CheckMark]              = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
197     colors[ImGuiCol_SliderGrab]             = ImVec4(0.24f, 0.52f, 0.88f, 1.00f);
198     colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
199     colors[ImGuiCol_Button]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
200     colors[ImGuiCol_ButtonHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
201     colors[ImGuiCol_ButtonActive]           = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
202     colors[ImGuiCol_Header]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
203     colors[ImGuiCol_HeaderHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
204     colors[ImGuiCol_HeaderActive]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
205     colors[ImGuiCol_Separator]              = colors[ImGuiCol_Border];//ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
206     colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
207     colors[ImGuiCol_SeparatorActive]        = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
208     colors[ImGuiCol_ResizeGrip]             = ImVec4(0.26f, 0.59f, 0.98f, 0.25f);
209     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
210     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
211     colors[ImGuiCol_CloseButton]            = ImVec4(0.41f, 0.41f, 0.41f, 0.50f);
212     colors[ImGuiCol_CloseButtonHovered]     = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
213     colors[ImGuiCol_CloseButtonActive]      = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
214     colors[ImGuiCol_PlotLines]              = ImVec4(0.61f, 0.61f, 0.61f, 1.00f);
215     colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
216     colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
217     colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.60f, 0.00f, 1.00f);
218     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
219     colors[ImGuiCol_ModalWindowDarkening]   = ImVec4(0.80f, 0.80f, 0.80f, 0.35f);
220 }
221
222 void ImGui::StyleColorsLight(ImGuiStyle* dst)
223 {
224     ImGuiStyle* style = dst ? dst : &ImGui::GetStyle();
225     ImVec4* colors = style->Colors;
226
227     colors[ImGuiCol_Text]                   = ImVec4(0.00f, 0.00f, 0.00f, 1.00f);
228     colors[ImGuiCol_TextDisabled]           = ImVec4(0.60f, 0.60f, 0.60f, 1.00f);
229     //colors[ImGuiCol_TextHovered]          = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
230     //colors[ImGuiCol_TextActive]           = ImVec4(1.00f, 1.00f, 0.00f, 1.00f);
231     colors[ImGuiCol_WindowBg]               = ImVec4(0.94f, 0.94f, 0.94f, 1.00f);
232     colors[ImGuiCol_ChildBg]                = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
233     colors[ImGuiCol_PopupBg]                = ImVec4(1.00f, 1.00f, 1.00f, 0.94f);
234     colors[ImGuiCol_Border]                 = ImVec4(0.00f, 0.00f, 0.00f, 0.30f);
235     colors[ImGuiCol_BorderShadow]           = ImVec4(0.00f, 0.00f, 0.00f, 0.00f);
236     colors[ImGuiCol_FrameBg]                = ImVec4(1.00f, 1.00f, 1.00f, 1.00f);
237     colors[ImGuiCol_FrameBgHovered]         = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
238     colors[ImGuiCol_FrameBgActive]          = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
239     colors[ImGuiCol_TitleBg]                = ImVec4(0.96f, 0.96f, 0.96f, 1.00f);
240     colors[ImGuiCol_TitleBgActive]          = ImVec4(0.82f, 0.82f, 0.82f, 1.00f);
241     colors[ImGuiCol_TitleBgCollapsed]       = ImVec4(1.00f, 1.00f, 1.00f, 0.51f);
242     colors[ImGuiCol_MenuBarBg]              = ImVec4(0.86f, 0.86f, 0.86f, 1.00f);
243     colors[ImGuiCol_ScrollbarBg]            = ImVec4(0.98f, 0.98f, 0.98f, 0.53f);
244     colors[ImGuiCol_ScrollbarGrab]          = ImVec4(0.69f, 0.69f, 0.69f, 0.80f);
245     colors[ImGuiCol_ScrollbarGrabHovered]   = ImVec4(0.49f, 0.49f, 0.49f, 0.80f);
246     colors[ImGuiCol_ScrollbarGrabActive]    = ImVec4(0.49f, 0.49f, 0.49f, 1.00f);
247     colors[ImGuiCol_CheckMark]              = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
248     colors[ImGuiCol_SliderGrab]             = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
249     colors[ImGuiCol_SliderGrabActive]       = ImVec4(0.46f, 0.54f, 0.80f, 0.60f);
250     colors[ImGuiCol_Button]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.40f);
251     colors[ImGuiCol_ButtonHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
252     colors[ImGuiCol_ButtonActive]           = ImVec4(0.06f, 0.53f, 0.98f, 1.00f);
253     colors[ImGuiCol_Header]                 = ImVec4(0.26f, 0.59f, 0.98f, 0.31f);
254     colors[ImGuiCol_HeaderHovered]          = ImVec4(0.26f, 0.59f, 0.98f, 0.80f);
255     colors[ImGuiCol_HeaderActive]           = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
256     colors[ImGuiCol_Separator]              = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
257     colors[ImGuiCol_SeparatorHovered]       = ImVec4(0.26f, 0.59f, 0.98f, 0.78f);
258     colors[ImGuiCol_SeparatorActive]        = ImVec4(0.26f, 0.59f, 0.98f, 1.00f);
259     colors[ImGuiCol_ResizeGrip]             = ImVec4(0.80f, 0.80f, 0.80f, 0.56f);
260     colors[ImGuiCol_ResizeGripHovered]      = ImVec4(0.26f, 0.59f, 0.98f, 0.67f);
261     colors[ImGuiCol_ResizeGripActive]       = ImVec4(0.26f, 0.59f, 0.98f, 0.95f);
262     colors[ImGuiCol_CloseButton]            = ImVec4(0.59f, 0.59f, 0.59f, 0.50f);
263     colors[ImGuiCol_CloseButtonHovered]     = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
264     colors[ImGuiCol_CloseButtonActive]      = ImVec4(0.98f, 0.39f, 0.36f, 1.00f);
265     colors[ImGuiCol_PlotLines]              = ImVec4(0.39f, 0.39f, 0.39f, 1.00f);
266     colors[ImGuiCol_PlotLinesHovered]       = ImVec4(1.00f, 0.43f, 0.35f, 1.00f);
267     colors[ImGuiCol_PlotHistogram]          = ImVec4(0.90f, 0.70f, 0.00f, 1.00f);
268     colors[ImGuiCol_PlotHistogramHovered]   = ImVec4(1.00f, 0.45f, 0.00f, 1.00f);
269     colors[ImGuiCol_TextSelectedBg]         = ImVec4(0.26f, 0.59f, 0.98f, 0.35f);
270     colors[ImGuiCol_ModalWindowDarkening]   = ImVec4(0.20f, 0.20f, 0.20f, 0.35f);
271 }
272
273
274 //-----------------------------------------------------------------------------
275 // ImDrawList
276 //-----------------------------------------------------------------------------
277
278 static const ImVec4 GNullClipRect(-8192.0f, -8192.0f, +8192.0f, +8192.0f); // Large values that are easy to encode in a few bits+shift
279
280 void ImDrawList::Clear()
281 {
282     CmdBuffer.resize(0);
283     IdxBuffer.resize(0);
284     VtxBuffer.resize(0);
285     _VtxCurrentIdx = 0;
286     _VtxWritePtr = NULL;
287     _IdxWritePtr = NULL;
288     _ClipRectStack.resize(0);
289     _TextureIdStack.resize(0);
290     _Path.resize(0);
291     _ChannelsCurrent = 0;
292     _ChannelsCount = 1;
293     // NB: Do not clear channels so our allocations are re-used after the first frame.
294 }
295
296 void ImDrawList::ClearFreeMemory()
297 {
298     CmdBuffer.clear();
299     IdxBuffer.clear();
300     VtxBuffer.clear();
301     _VtxCurrentIdx = 0;
302     _VtxWritePtr = NULL;
303     _IdxWritePtr = NULL;
304     _ClipRectStack.clear();
305     _TextureIdStack.clear();
306     _Path.clear();
307     _ChannelsCurrent = 0;
308     _ChannelsCount = 1;
309     for (int i = 0; i < _Channels.Size; i++)
310     {
311         if (i == 0) memset(&_Channels[0], 0, sizeof(_Channels[0]));  // channel 0 is a copy of CmdBuffer/IdxBuffer, don't destruct again
312         _Channels[i].CmdBuffer.clear();
313         _Channels[i].IdxBuffer.clear();
314     }
315     _Channels.clear();
316 }
317
318 // Using macros because C++ is a terrible language, we want guaranteed inline, no code in header, and no overhead in Debug builds
319 #define GetCurrentClipRect()    (_ClipRectStack.Size ? _ClipRectStack.Data[_ClipRectStack.Size-1]  : GNullClipRect)
320 #define GetCurrentTextureId()   (_TextureIdStack.Size ? _TextureIdStack.Data[_TextureIdStack.Size-1] : NULL)
321
322 void ImDrawList::AddDrawCmd()
323 {
324     ImDrawCmd draw_cmd;
325     draw_cmd.ClipRect = GetCurrentClipRect();
326     draw_cmd.TextureId = GetCurrentTextureId();
327
328     IM_ASSERT(draw_cmd.ClipRect.x <= draw_cmd.ClipRect.z && draw_cmd.ClipRect.y <= draw_cmd.ClipRect.w);
329     CmdBuffer.push_back(draw_cmd);
330 }
331
332 void ImDrawList::AddCallback(ImDrawCallback callback, void* callback_data)
333 {
334     ImDrawCmd* current_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
335     if (!current_cmd || current_cmd->ElemCount != 0 || current_cmd->UserCallback != NULL)
336     {
337         AddDrawCmd();
338         current_cmd = &CmdBuffer.back();
339     }
340     current_cmd->UserCallback = callback;
341     current_cmd->UserCallbackData = callback_data;
342
343     AddDrawCmd(); // Force a new command after us (see comment below)
344 }
345
346 // Our scheme may appears a bit unusual, basically we want the most-common calls AddLine AddRect etc. to not have to perform any check so we always have a command ready in the stack.
347 // The cost of figuring out if a new command has to be added or if we can merge is paid in those Update** functions only.
348 void ImDrawList::UpdateClipRect()
349 {
350     // If current command is used with different settings we need to add a new command
351     const ImVec4 curr_clip_rect = GetCurrentClipRect();
352     ImDrawCmd* curr_cmd = CmdBuffer.Size > 0 ? &CmdBuffer.Data[CmdBuffer.Size-1] : NULL;
353     if (!curr_cmd || (curr_cmd->ElemCount != 0 && memcmp(&curr_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) != 0) || curr_cmd->UserCallback != NULL)
354     {
355         AddDrawCmd();
356         return;
357     }
358
359     // Try to merge with previous command if it matches, else use current command
360     ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
361     if (curr_cmd->ElemCount == 0 && prev_cmd && memcmp(&prev_cmd->ClipRect, &curr_clip_rect, sizeof(ImVec4)) == 0 && prev_cmd->TextureId == GetCurrentTextureId() && prev_cmd->UserCallback == NULL)
362         CmdBuffer.pop_back();
363     else
364         curr_cmd->ClipRect = curr_clip_rect;
365 }
366
367 void ImDrawList::UpdateTextureID()
368 {
369     // If current command is used with different settings we need to add a new command
370     const ImTextureID curr_texture_id = GetCurrentTextureId();
371     ImDrawCmd* curr_cmd = CmdBuffer.Size ? &CmdBuffer.back() : NULL;
372     if (!curr_cmd || (curr_cmd->ElemCount != 0 && curr_cmd->TextureId != curr_texture_id) || curr_cmd->UserCallback != NULL)
373     {
374         AddDrawCmd();
375         return;
376     }
377
378     // Try to merge with previous command if it matches, else use current command
379     ImDrawCmd* prev_cmd = CmdBuffer.Size > 1 ? curr_cmd - 1 : NULL;
380     if (curr_cmd->ElemCount == 0 && prev_cmd && prev_cmd->TextureId == curr_texture_id && memcmp(&prev_cmd->ClipRect, &GetCurrentClipRect(), sizeof(ImVec4)) == 0 && prev_cmd->UserCallback == NULL)
381         CmdBuffer.pop_back();
382     else
383         curr_cmd->TextureId = curr_texture_id;
384 }
385
386 #undef GetCurrentClipRect
387 #undef GetCurrentTextureId
388
389 // Render-level scissoring. This is passed down to your render function but not used for CPU-side coarse clipping. Prefer using higher-level ImGui::PushClipRect() to affect logic (hit-testing and widget culling)
390 void ImDrawList::PushClipRect(ImVec2 cr_min, ImVec2 cr_max, bool intersect_with_current_clip_rect)
391 {
392     ImVec4 cr(cr_min.x, cr_min.y, cr_max.x, cr_max.y);
393     if (intersect_with_current_clip_rect && _ClipRectStack.Size)
394     {
395         ImVec4 current = _ClipRectStack.Data[_ClipRectStack.Size-1];
396         if (cr.x < current.x) cr.x = current.x;
397         if (cr.y < current.y) cr.y = current.y;
398         if (cr.z > current.z) cr.z = current.z;
399         if (cr.w > current.w) cr.w = current.w;
400     }
401     cr.z = ImMax(cr.x, cr.z);
402     cr.w = ImMax(cr.y, cr.w);
403
404     _ClipRectStack.push_back(cr);
405     UpdateClipRect();
406 }
407
408 void ImDrawList::PushClipRectFullScreen()
409 {
410     PushClipRect(ImVec2(GNullClipRect.x, GNullClipRect.y), ImVec2(GNullClipRect.z, GNullClipRect.w));
411     //PushClipRect(GetVisibleRect());   // FIXME-OPT: This would be more correct but we're not supposed to access ImGuiContext from here?
412 }
413
414 void ImDrawList::PopClipRect()
415 {
416     IM_ASSERT(_ClipRectStack.Size > 0);
417     _ClipRectStack.pop_back();
418     UpdateClipRect();
419 }
420
421 void ImDrawList::PushTextureID(const ImTextureID& texture_id)
422 {
423     _TextureIdStack.push_back(texture_id);
424     UpdateTextureID();
425 }
426
427 void ImDrawList::PopTextureID()
428 {
429     IM_ASSERT(_TextureIdStack.Size > 0);
430     _TextureIdStack.pop_back();
431     UpdateTextureID();
432 }
433
434 void ImDrawList::ChannelsSplit(int channels_count)
435 {
436     IM_ASSERT(_ChannelsCurrent == 0 && _ChannelsCount == 1);
437     int old_channels_count = _Channels.Size;
438     if (old_channels_count < channels_count)
439         _Channels.resize(channels_count);
440     _ChannelsCount = channels_count;
441
442     // _Channels[] (24/32 bytes each) hold storage that we'll swap with this->_CmdBuffer/_IdxBuffer
443     // The content of _Channels[0] at this point doesn't matter. We clear it to make state tidy in a debugger but we don't strictly need to.
444     // When we switch to the next channel, we'll copy _CmdBuffer/_IdxBuffer into _Channels[0] and then _Channels[1] into _CmdBuffer/_IdxBuffer
445     memset(&_Channels[0], 0, sizeof(ImDrawChannel));
446     for (int i = 1; i < channels_count; i++)
447     {
448         if (i >= old_channels_count)
449         {
450             IM_PLACEMENT_NEW(&_Channels[i]) ImDrawChannel();
451         }
452         else
453         {
454             _Channels[i].CmdBuffer.resize(0);
455             _Channels[i].IdxBuffer.resize(0);
456         }
457         if (_Channels[i].CmdBuffer.Size == 0)
458         {
459             ImDrawCmd draw_cmd;
460             draw_cmd.ClipRect = _ClipRectStack.back();
461             draw_cmd.TextureId = _TextureIdStack.back();
462             _Channels[i].CmdBuffer.push_back(draw_cmd);
463         }
464     }
465 }
466
467 void ImDrawList::ChannelsMerge()
468 {
469     // Note that we never use or rely on channels.Size because it is merely a buffer that we never shrink back to 0 to keep all sub-buffers ready for use.
470     if (_ChannelsCount <= 1)
471         return;
472
473     ChannelsSetCurrent(0);
474     if (CmdBuffer.Size && CmdBuffer.back().ElemCount == 0)
475         CmdBuffer.pop_back();
476
477     int new_cmd_buffer_count = 0, new_idx_buffer_count = 0;
478     for (int i = 1; i < _ChannelsCount; i++)
479     {
480         ImDrawChannel& ch = _Channels[i];
481         if (ch.CmdBuffer.Size && ch.CmdBuffer.back().ElemCount == 0)
482             ch.CmdBuffer.pop_back();
483         new_cmd_buffer_count += ch.CmdBuffer.Size;
484         new_idx_buffer_count += ch.IdxBuffer.Size;
485     }
486     CmdBuffer.resize(CmdBuffer.Size + new_cmd_buffer_count);
487     IdxBuffer.resize(IdxBuffer.Size + new_idx_buffer_count);
488
489     ImDrawCmd* cmd_write = CmdBuffer.Data + CmdBuffer.Size - new_cmd_buffer_count;
490     _IdxWritePtr = IdxBuffer.Data + IdxBuffer.Size - new_idx_buffer_count;
491     for (int i = 1; i < _ChannelsCount; i++)
492     {
493         ImDrawChannel& ch = _Channels[i];
494         if (int sz = ch.CmdBuffer.Size) { memcpy(cmd_write, ch.CmdBuffer.Data, sz * sizeof(ImDrawCmd)); cmd_write += sz; }
495         if (int sz = ch.IdxBuffer.Size) { memcpy(_IdxWritePtr, ch.IdxBuffer.Data, sz * sizeof(ImDrawIdx)); _IdxWritePtr += sz; }
496     }
497     UpdateClipRect(); // We call this instead of AddDrawCmd(), so that empty channels won't produce an extra draw call.
498     _ChannelsCount = 1;
499 }
500
501 void ImDrawList::ChannelsSetCurrent(int idx)
502 {
503     IM_ASSERT(idx < _ChannelsCount);
504     if (_ChannelsCurrent == idx) return;
505     memcpy(&_Channels.Data[_ChannelsCurrent].CmdBuffer, &CmdBuffer, sizeof(CmdBuffer)); // copy 12 bytes, four times
506     memcpy(&_Channels.Data[_ChannelsCurrent].IdxBuffer, &IdxBuffer, sizeof(IdxBuffer));
507     _ChannelsCurrent = idx;
508     memcpy(&CmdBuffer, &_Channels.Data[_ChannelsCurrent].CmdBuffer, sizeof(CmdBuffer));
509     memcpy(&IdxBuffer, &_Channels.Data[_ChannelsCurrent].IdxBuffer, sizeof(IdxBuffer));
510     _IdxWritePtr = IdxBuffer.Data + IdxBuffer.Size;
511 }
512
513 // NB: this can be called with negative count for removing primitives (as long as the result does not underflow)
514 void ImDrawList::PrimReserve(int idx_count, int vtx_count)
515 {
516     ImDrawCmd& draw_cmd = CmdBuffer.Data[CmdBuffer.Size-1];
517     draw_cmd.ElemCount += idx_count;
518
519     int vtx_buffer_old_size = VtxBuffer.Size;
520     VtxBuffer.resize(vtx_buffer_old_size + vtx_count);
521     _VtxWritePtr = VtxBuffer.Data + vtx_buffer_old_size;
522
523     int idx_buffer_old_size = IdxBuffer.Size;
524     IdxBuffer.resize(idx_buffer_old_size + idx_count);
525     _IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
526 }
527
528 // Fully unrolled with inline call to keep our debug builds decently fast.
529 void ImDrawList::PrimRect(const ImVec2& a, const ImVec2& c, ImU32 col)
530 {
531     ImVec2 b(c.x, a.y), d(a.x, c.y), uv(GImGui->FontTexUvWhitePixel);
532     ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
533     _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
534     _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
535     _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
536     _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
537     _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
538     _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;
539     _VtxWritePtr += 4;
540     _VtxCurrentIdx += 4;
541     _IdxWritePtr += 6;
542 }
543
544 void ImDrawList::PrimRectUV(const ImVec2& a, const ImVec2& c, const ImVec2& uv_a, const ImVec2& uv_c, ImU32 col)
545 {
546     ImVec2 b(c.x, a.y), d(a.x, c.y), uv_b(uv_c.x, uv_a.y), uv_d(uv_a.x, uv_c.y);
547     ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
548     _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
549     _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
550     _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
551     _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
552     _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
553     _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
554     _VtxWritePtr += 4;
555     _VtxCurrentIdx += 4;
556     _IdxWritePtr += 6;
557 }
558
559 void ImDrawList::PrimQuadUV(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
560 {
561     ImDrawIdx idx = (ImDrawIdx)_VtxCurrentIdx;
562     _IdxWritePtr[0] = idx; _IdxWritePtr[1] = (ImDrawIdx)(idx+1); _IdxWritePtr[2] = (ImDrawIdx)(idx+2);
563     _IdxWritePtr[3] = idx; _IdxWritePtr[4] = (ImDrawIdx)(idx+2); _IdxWritePtr[5] = (ImDrawIdx)(idx+3);
564     _VtxWritePtr[0].pos = a; _VtxWritePtr[0].uv = uv_a; _VtxWritePtr[0].col = col;
565     _VtxWritePtr[1].pos = b; _VtxWritePtr[1].uv = uv_b; _VtxWritePtr[1].col = col;
566     _VtxWritePtr[2].pos = c; _VtxWritePtr[2].uv = uv_c; _VtxWritePtr[2].col = col;
567     _VtxWritePtr[3].pos = d; _VtxWritePtr[3].uv = uv_d; _VtxWritePtr[3].col = col;
568     _VtxWritePtr += 4;
569     _VtxCurrentIdx += 4;
570     _IdxWritePtr += 6;
571 }
572
573 // TODO: Thickness anti-aliased lines cap are missing their AA fringe.
574 void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32 col, bool closed, float thickness, bool anti_aliased)
575 {
576     if (points_count < 2)
577         return;
578
579     const ImVec2 uv = GImGui->FontTexUvWhitePixel;
580     anti_aliased &= GImGui->Style.AntiAliasedLines;
581     //if (ImGui::GetIO().KeyCtrl) anti_aliased = false; // Debug
582
583     int count = points_count;
584     if (!closed)
585         count = points_count-1;
586
587     const bool thick_line = thickness > 1.0f;
588     if (anti_aliased)
589     {
590         // Anti-aliased stroke
591         const float AA_SIZE = 1.0f;
592         const ImU32 col_trans = col & ~IM_COL32_A_MASK;
593
594         const int idx_count = thick_line ? count*18 : count*12;
595         const int vtx_count = thick_line ? points_count*4 : points_count*3;
596         PrimReserve(idx_count, vtx_count);
597
598         // Temporary buffer
599         ImVec2* temp_normals = (ImVec2*)alloca(points_count * (thick_line ? 5 : 3) * sizeof(ImVec2));
600         ImVec2* temp_points = temp_normals + points_count;
601
602         for (int i1 = 0; i1 < count; i1++)
603         {
604             const int i2 = (i1+1) == points_count ? 0 : i1+1;
605             ImVec2 diff = points[i2] - points[i1];
606             diff *= ImInvLength(diff, 1.0f);
607             temp_normals[i1].x = diff.y;
608             temp_normals[i1].y = -diff.x;
609         }
610         if (!closed)
611             temp_normals[points_count-1] = temp_normals[points_count-2];
612
613         if (!thick_line)
614         {
615             if (!closed)
616             {
617                 temp_points[0] = points[0] + temp_normals[0] * AA_SIZE;
618                 temp_points[1] = points[0] - temp_normals[0] * AA_SIZE;
619                 temp_points[(points_count-1)*2+0] = points[points_count-1] + temp_normals[points_count-1] * AA_SIZE;
620                 temp_points[(points_count-1)*2+1] = points[points_count-1] - temp_normals[points_count-1] * AA_SIZE;
621             }
622
623             // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
624             unsigned int idx1 = _VtxCurrentIdx;
625             for (int i1 = 0; i1 < count; i1++)
626             {
627                 const int i2 = (i1+1) == points_count ? 0 : i1+1;
628                 unsigned int idx2 = (i1+1) == points_count ? _VtxCurrentIdx : idx1+3;
629
630                 // Average normals
631                 ImVec2 dm = (temp_normals[i1] + temp_normals[i2]) * 0.5f;
632                 float dmr2 = dm.x*dm.x + dm.y*dm.y;
633                 if (dmr2 > 0.000001f)
634                 {
635                     float scale = 1.0f / dmr2;
636                     if (scale > 100.0f) scale = 100.0f;
637                     dm *= scale;
638                 }
639                 dm *= AA_SIZE;
640                 temp_points[i2*2+0] = points[i2] + dm;
641                 temp_points[i2*2+1] = points[i2] - dm;
642
643                 // Add indexes
644                 _IdxWritePtr[0] = (ImDrawIdx)(idx2+0); _IdxWritePtr[1] = (ImDrawIdx)(idx1+0); _IdxWritePtr[2] = (ImDrawIdx)(idx1+2);
645                 _IdxWritePtr[3] = (ImDrawIdx)(idx1+2); _IdxWritePtr[4] = (ImDrawIdx)(idx2+2); _IdxWritePtr[5] = (ImDrawIdx)(idx2+0);
646                 _IdxWritePtr[6] = (ImDrawIdx)(idx2+1); _IdxWritePtr[7] = (ImDrawIdx)(idx1+1); _IdxWritePtr[8] = (ImDrawIdx)(idx1+0);
647                 _IdxWritePtr[9] = (ImDrawIdx)(idx1+0); _IdxWritePtr[10]= (ImDrawIdx)(idx2+0); _IdxWritePtr[11]= (ImDrawIdx)(idx2+1);
648                 _IdxWritePtr += 12;
649
650                 idx1 = idx2;
651             }
652
653             // Add vertexes
654             for (int i = 0; i < points_count; i++)
655             {
656                 _VtxWritePtr[0].pos = points[i];          _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
657                 _VtxWritePtr[1].pos = temp_points[i*2+0]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans;
658                 _VtxWritePtr[2].pos = temp_points[i*2+1]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col_trans;
659                 _VtxWritePtr += 3;
660             }
661         }
662         else
663         {
664             const float half_inner_thickness = (thickness - AA_SIZE) * 0.5f;
665             if (!closed)
666             {
667                 temp_points[0] = points[0] + temp_normals[0] * (half_inner_thickness + AA_SIZE);
668                 temp_points[1] = points[0] + temp_normals[0] * (half_inner_thickness);
669                 temp_points[2] = points[0] - temp_normals[0] * (half_inner_thickness);
670                 temp_points[3] = points[0] - temp_normals[0] * (half_inner_thickness + AA_SIZE);
671                 temp_points[(points_count-1)*4+0] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE);
672                 temp_points[(points_count-1)*4+1] = points[points_count-1] + temp_normals[points_count-1] * (half_inner_thickness);
673                 temp_points[(points_count-1)*4+2] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness);
674                 temp_points[(points_count-1)*4+3] = points[points_count-1] - temp_normals[points_count-1] * (half_inner_thickness + AA_SIZE);
675             }
676
677             // FIXME-OPT: Merge the different loops, possibly remove the temporary buffer.
678             unsigned int idx1 = _VtxCurrentIdx;
679             for (int i1 = 0; i1 < count; i1++)
680             {
681                 const int i2 = (i1+1) == points_count ? 0 : i1+1;
682                 unsigned int idx2 = (i1+1) == points_count ? _VtxCurrentIdx : idx1+4;
683
684                 // Average normals
685                 ImVec2 dm = (temp_normals[i1] + temp_normals[i2]) * 0.5f;
686                 float dmr2 = dm.x*dm.x + dm.y*dm.y;
687                 if (dmr2 > 0.000001f)
688                 {
689                     float scale = 1.0f / dmr2;
690                     if (scale > 100.0f) scale = 100.0f;
691                     dm *= scale;
692                 }
693                 ImVec2 dm_out = dm * (half_inner_thickness + AA_SIZE);
694                 ImVec2 dm_in = dm * half_inner_thickness;
695                 temp_points[i2*4+0] = points[i2] + dm_out;
696                 temp_points[i2*4+1] = points[i2] + dm_in;
697                 temp_points[i2*4+2] = points[i2] - dm_in;
698                 temp_points[i2*4+3] = points[i2] - dm_out;
699
700                 // Add indexes
701                 _IdxWritePtr[0]  = (ImDrawIdx)(idx2+1); _IdxWritePtr[1]  = (ImDrawIdx)(idx1+1); _IdxWritePtr[2]  = (ImDrawIdx)(idx1+2);
702                 _IdxWritePtr[3]  = (ImDrawIdx)(idx1+2); _IdxWritePtr[4]  = (ImDrawIdx)(idx2+2); _IdxWritePtr[5]  = (ImDrawIdx)(idx2+1);
703                 _IdxWritePtr[6]  = (ImDrawIdx)(idx2+1); _IdxWritePtr[7]  = (ImDrawIdx)(idx1+1); _IdxWritePtr[8]  = (ImDrawIdx)(idx1+0);
704                 _IdxWritePtr[9]  = (ImDrawIdx)(idx1+0); _IdxWritePtr[10] = (ImDrawIdx)(idx2+0); _IdxWritePtr[11] = (ImDrawIdx)(idx2+1);
705                 _IdxWritePtr[12] = (ImDrawIdx)(idx2+2); _IdxWritePtr[13] = (ImDrawIdx)(idx1+2); _IdxWritePtr[14] = (ImDrawIdx)(idx1+3);
706                 _IdxWritePtr[15] = (ImDrawIdx)(idx1+3); _IdxWritePtr[16] = (ImDrawIdx)(idx2+3); _IdxWritePtr[17] = (ImDrawIdx)(idx2+2);
707                 _IdxWritePtr += 18;
708
709                 idx1 = idx2;
710             }
711
712             // Add vertexes
713             for (int i = 0; i < points_count; i++)
714             {
715                 _VtxWritePtr[0].pos = temp_points[i*4+0]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col_trans;
716                 _VtxWritePtr[1].pos = temp_points[i*4+1]; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
717                 _VtxWritePtr[2].pos = temp_points[i*4+2]; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
718                 _VtxWritePtr[3].pos = temp_points[i*4+3]; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col_trans;
719                 _VtxWritePtr += 4;
720             }
721         }
722         _VtxCurrentIdx += (ImDrawIdx)vtx_count;
723     }
724     else
725     {
726         // Non Anti-aliased Stroke
727         const int idx_count = count*6;
728         const int vtx_count = count*4;      // FIXME-OPT: Not sharing edges
729         PrimReserve(idx_count, vtx_count);
730
731         for (int i1 = 0; i1 < count; i1++)
732         {
733             const int i2 = (i1+1) == points_count ? 0 : i1+1;
734             const ImVec2& p1 = points[i1];
735             const ImVec2& p2 = points[i2];
736             ImVec2 diff = p2 - p1;
737             diff *= ImInvLength(diff, 1.0f);
738
739             const float dx = diff.x * (thickness * 0.5f);
740             const float dy = diff.y * (thickness * 0.5f);
741             _VtxWritePtr[0].pos.x = p1.x + dy; _VtxWritePtr[0].pos.y = p1.y - dx; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
742             _VtxWritePtr[1].pos.x = p2.x + dy; _VtxWritePtr[1].pos.y = p2.y - dx; _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col;
743             _VtxWritePtr[2].pos.x = p2.x - dy; _VtxWritePtr[2].pos.y = p2.y + dx; _VtxWritePtr[2].uv = uv; _VtxWritePtr[2].col = col;
744             _VtxWritePtr[3].pos.x = p1.x - dy; _VtxWritePtr[3].pos.y = p1.y + dx; _VtxWritePtr[3].uv = uv; _VtxWritePtr[3].col = col;
745             _VtxWritePtr += 4;
746
747             _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx+1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx+2);
748             _IdxWritePtr[3] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[4] = (ImDrawIdx)(_VtxCurrentIdx+2); _IdxWritePtr[5] = (ImDrawIdx)(_VtxCurrentIdx+3);
749             _IdxWritePtr += 6;
750             _VtxCurrentIdx += 4;
751         }
752     }
753 }
754
755 void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col, bool anti_aliased)
756 {
757     const ImVec2 uv = GImGui->FontTexUvWhitePixel;
758     anti_aliased &= GImGui->Style.AntiAliasedShapes;
759     //if (ImGui::GetIO().KeyCtrl) anti_aliased = false; // Debug
760
761     if (anti_aliased)
762     {
763         // Anti-aliased Fill
764         const float AA_SIZE = 1.0f;
765         const ImU32 col_trans = col & ~IM_COL32_A_MASK;
766         const int idx_count = (points_count-2)*3 + points_count*6;
767         const int vtx_count = (points_count*2);
768         PrimReserve(idx_count, vtx_count);
769
770         // Add indexes for fill
771         unsigned int vtx_inner_idx = _VtxCurrentIdx;
772         unsigned int vtx_outer_idx = _VtxCurrentIdx+1;
773         for (int i = 2; i < points_count; i++)
774         {
775             _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx+((i-1)<<1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_inner_idx+(i<<1));
776             _IdxWritePtr += 3;
777         }
778
779         // Compute normals
780         ImVec2* temp_normals = (ImVec2*)alloca(points_count * sizeof(ImVec2));
781         for (int i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++)
782         {
783             const ImVec2& p0 = points[i0];
784             const ImVec2& p1 = points[i1];
785             ImVec2 diff = p1 - p0;
786             diff *= ImInvLength(diff, 1.0f);
787             temp_normals[i0].x = diff.y;
788             temp_normals[i0].y = -diff.x;
789         }
790
791         for (int i0 = points_count-1, i1 = 0; i1 < points_count; i0 = i1++)
792         {
793             // Average normals
794             const ImVec2& n0 = temp_normals[i0];
795             const ImVec2& n1 = temp_normals[i1];
796             ImVec2 dm = (n0 + n1) * 0.5f;
797             float dmr2 = dm.x*dm.x + dm.y*dm.y;
798             if (dmr2 > 0.000001f)
799             {
800                 float scale = 1.0f / dmr2;
801                 if (scale > 100.0f) scale = 100.0f;
802                 dm *= scale;
803             }
804             dm *= AA_SIZE * 0.5f;
805
806             // Add vertices
807             _VtxWritePtr[0].pos = (points[i1] - dm); _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;        // Inner
808             _VtxWritePtr[1].pos = (points[i1] + dm); _VtxWritePtr[1].uv = uv; _VtxWritePtr[1].col = col_trans;  // Outer
809             _VtxWritePtr += 2;
810
811             // Add indexes for fringes
812             _IdxWritePtr[0] = (ImDrawIdx)(vtx_inner_idx+(i1<<1)); _IdxWritePtr[1] = (ImDrawIdx)(vtx_inner_idx+(i0<<1)); _IdxWritePtr[2] = (ImDrawIdx)(vtx_outer_idx+(i0<<1));
813             _IdxWritePtr[3] = (ImDrawIdx)(vtx_outer_idx+(i0<<1)); _IdxWritePtr[4] = (ImDrawIdx)(vtx_outer_idx+(i1<<1)); _IdxWritePtr[5] = (ImDrawIdx)(vtx_inner_idx+(i1<<1));
814             _IdxWritePtr += 6;
815         }
816         _VtxCurrentIdx += (ImDrawIdx)vtx_count;
817     }
818     else
819     {
820         // Non Anti-aliased Fill
821         const int idx_count = (points_count-2)*3;
822         const int vtx_count = points_count;
823         PrimReserve(idx_count, vtx_count);
824         for (int i = 0; i < vtx_count; i++)
825         {
826             _VtxWritePtr[0].pos = points[i]; _VtxWritePtr[0].uv = uv; _VtxWritePtr[0].col = col;
827             _VtxWritePtr++;
828         }
829         for (int i = 2; i < points_count; i++)
830         {
831             _IdxWritePtr[0] = (ImDrawIdx)(_VtxCurrentIdx); _IdxWritePtr[1] = (ImDrawIdx)(_VtxCurrentIdx+i-1); _IdxWritePtr[2] = (ImDrawIdx)(_VtxCurrentIdx+i);
832             _IdxWritePtr += 3;
833         }
834         _VtxCurrentIdx += (ImDrawIdx)vtx_count;
835     }
836 }
837
838 void ImDrawList::PathArcToFast(const ImVec2& centre, float radius, int a_min_of_12, int a_max_of_12)
839 {
840     static ImVec2 circle_vtx[12];
841     static bool circle_vtx_builds = false;
842     const int circle_vtx_count = IM_ARRAYSIZE(circle_vtx);
843     if (!circle_vtx_builds)
844     {
845         for (int i = 0; i < circle_vtx_count; i++)
846         {
847             const float a = ((float)i / (float)circle_vtx_count) * 2*IM_PI;
848             circle_vtx[i].x = cosf(a);
849             circle_vtx[i].y = sinf(a);
850         }
851         circle_vtx_builds = true;
852     }
853
854     if (radius == 0.0f || a_min_of_12 > a_max_of_12)
855     {
856         _Path.push_back(centre);
857         return;
858     }
859     _Path.reserve(_Path.Size + (a_max_of_12 - a_min_of_12 + 1));
860     for (int a = a_min_of_12; a <= a_max_of_12; a++)
861     {
862         const ImVec2& c = circle_vtx[a % circle_vtx_count];
863         _Path.push_back(ImVec2(centre.x + c.x * radius, centre.y + c.y * radius));
864     }
865 }
866
867 void ImDrawList::PathArcTo(const ImVec2& centre, float radius, float a_min, float a_max, int num_segments)
868 {
869     if (radius == 0.0f)
870     {
871         _Path.push_back(centre);
872         return;
873     }
874     _Path.reserve(_Path.Size + (num_segments + 1));
875     for (int i = 0; i <= num_segments; i++)
876     {
877         const float a = a_min + ((float)i / (float)num_segments) * (a_max - a_min);
878         _Path.push_back(ImVec2(centre.x + cosf(a) * radius, centre.y + sinf(a) * radius));
879     }
880 }
881
882 static void PathBezierToCasteljau(ImVector<ImVec2>* path, float x1, float y1, float x2, float y2, float x3, float y3, float x4, float y4, float tess_tol, int level)
883 {
884     float dx = x4 - x1;
885     float dy = y4 - y1;
886     float d2 = ((x2 - x4) * dy - (y2 - y4) * dx);
887     float d3 = ((x3 - x4) * dy - (y3 - y4) * dx);
888     d2 = (d2 >= 0) ? d2 : -d2;
889     d3 = (d3 >= 0) ? d3 : -d3;
890     if ((d2+d3) * (d2+d3) < tess_tol * (dx*dx + dy*dy))
891     {
892         path->push_back(ImVec2(x4, y4));
893     }
894     else if (level < 10)
895     {
896         float x12 = (x1+x2)*0.5f,       y12 = (y1+y2)*0.5f;
897         float x23 = (x2+x3)*0.5f,       y23 = (y2+y3)*0.5f;
898         float x34 = (x3+x4)*0.5f,       y34 = (y3+y4)*0.5f;
899         float x123 = (x12+x23)*0.5f,    y123 = (y12+y23)*0.5f;
900         float x234 = (x23+x34)*0.5f,    y234 = (y23+y34)*0.5f;
901         float x1234 = (x123+x234)*0.5f, y1234 = (y123+y234)*0.5f;
902
903         PathBezierToCasteljau(path, x1,y1,        x12,y12,    x123,y123,  x1234,y1234, tess_tol, level+1);
904         PathBezierToCasteljau(path, x1234,y1234,  x234,y234,  x34,y34,    x4,y4,       tess_tol, level+1);
905     }
906 }
907
908 void ImDrawList::PathBezierCurveTo(const ImVec2& p2, const ImVec2& p3, const ImVec2& p4, int num_segments)
909 {
910     ImVec2 p1 = _Path.back();
911     if (num_segments == 0)
912     {
913         // Auto-tessellated
914         PathBezierToCasteljau(&_Path, p1.x, p1.y, p2.x, p2.y, p3.x, p3.y, p4.x, p4.y, GImGui->Style.CurveTessellationTol, 0);
915     }
916     else
917     {
918         float t_step = 1.0f / (float)num_segments;
919         for (int i_step = 1; i_step <= num_segments; i_step++)
920         {
921             float t = t_step * i_step;
922             float u = 1.0f - t;
923             float w1 = u*u*u;
924             float w2 = 3*u*u*t;
925             float w3 = 3*u*t*t;
926             float w4 = t*t*t;
927             _Path.push_back(ImVec2(w1*p1.x + w2*p2.x + w3*p3.x + w4*p4.x, w1*p1.y + w2*p2.y + w3*p3.y + w4*p4.y));
928         }
929     }
930 }
931
932 void ImDrawList::PathRect(const ImVec2& a, const ImVec2& b, float rounding, int rounding_corners)
933 {
934     rounding = ImMin(rounding, fabsf(b.x - a.x) * ( ((rounding_corners & ImDrawCornerFlags_Top)  == ImDrawCornerFlags_Top)  || ((rounding_corners & ImDrawCornerFlags_Bot)   == ImDrawCornerFlags_Bot)   ? 0.5f : 1.0f ) - 1.0f);
935     rounding = ImMin(rounding, fabsf(b.y - a.y) * ( ((rounding_corners & ImDrawCornerFlags_Left) == ImDrawCornerFlags_Left) || ((rounding_corners & ImDrawCornerFlags_Right) == ImDrawCornerFlags_Right) ? 0.5f : 1.0f ) - 1.0f);
936
937     if (rounding <= 0.0f || rounding_corners == 0)
938     {
939         PathLineTo(a);
940         PathLineTo(ImVec2(b.x, a.y));
941         PathLineTo(b);
942         PathLineTo(ImVec2(a.x, b.y));
943     }
944     else
945     {
946         const float rounding_tl = (rounding_corners & ImDrawCornerFlags_TopLeft) ? rounding : 0.0f;
947         const float rounding_tr = (rounding_corners & ImDrawCornerFlags_TopRight) ? rounding : 0.0f;
948         const float rounding_br = (rounding_corners & ImDrawCornerFlags_BotRight) ? rounding : 0.0f;
949         const float rounding_bl = (rounding_corners & ImDrawCornerFlags_BotLeft) ? rounding : 0.0f;
950         PathArcToFast(ImVec2(a.x + rounding_tl, a.y + rounding_tl), rounding_tl, 6, 9);
951         PathArcToFast(ImVec2(b.x - rounding_tr, a.y + rounding_tr), rounding_tr, 9, 12);
952         PathArcToFast(ImVec2(b.x - rounding_br, b.y - rounding_br), rounding_br, 0, 3);
953         PathArcToFast(ImVec2(a.x + rounding_bl, b.y - rounding_bl), rounding_bl, 3, 6);
954     }
955 }
956
957 void ImDrawList::AddLine(const ImVec2& a, const ImVec2& b, ImU32 col, float thickness)
958 {
959     if ((col & IM_COL32_A_MASK) == 0)
960         return;
961     PathLineTo(a + ImVec2(0.5f,0.5f));
962     PathLineTo(b + ImVec2(0.5f,0.5f));
963     PathStroke(col, false, thickness);
964 }
965
966 // a: upper-left, b: lower-right. we don't render 1 px sized rectangles properly.
967 void ImDrawList::AddRect(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners_flags, float thickness)
968 {
969     if ((col & IM_COL32_A_MASK) == 0)
970         return;
971     PathRect(a + ImVec2(0.5f,0.5f), b - ImVec2(0.5f,0.5f), rounding, rounding_corners_flags);
972     PathStroke(col, true, thickness);
973 }
974
975 void ImDrawList::AddRectFilled(const ImVec2& a, const ImVec2& b, ImU32 col, float rounding, int rounding_corners_flags)
976 {
977     if ((col & IM_COL32_A_MASK) == 0)
978         return;
979     if (rounding > 0.0f)
980     {
981         PathRect(a, b, rounding, rounding_corners_flags);
982         PathFillConvex(col);
983     }
984     else
985     {
986         PrimReserve(6, 4);
987         PrimRect(a, b, col);
988     }
989 }
990
991 void ImDrawList::AddRectFilledMultiColor(const ImVec2& a, const ImVec2& c, ImU32 col_upr_left, ImU32 col_upr_right, ImU32 col_bot_right, ImU32 col_bot_left)
992 {
993     if (((col_upr_left | col_upr_right | col_bot_right | col_bot_left) & IM_COL32_A_MASK) == 0)
994         return;
995
996     const ImVec2 uv = GImGui->FontTexUvWhitePixel;
997     PrimReserve(6, 4);
998     PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+1)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+2));
999     PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+2)); PrimWriteIdx((ImDrawIdx)(_VtxCurrentIdx+3));
1000     PrimWriteVtx(a, uv, col_upr_left);
1001     PrimWriteVtx(ImVec2(c.x, a.y), uv, col_upr_right);
1002     PrimWriteVtx(c, uv, col_bot_right);
1003     PrimWriteVtx(ImVec2(a.x, c.y), uv, col_bot_left);
1004 }
1005
1006 void ImDrawList::AddQuad(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col, float thickness)
1007 {
1008     if ((col & IM_COL32_A_MASK) == 0)
1009         return;
1010
1011     PathLineTo(a);
1012     PathLineTo(b);
1013     PathLineTo(c);
1014     PathLineTo(d);
1015     PathStroke(col, true, thickness);
1016 }
1017
1018 void ImDrawList::AddQuadFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, ImU32 col)
1019 {
1020     if ((col & IM_COL32_A_MASK) == 0)
1021         return;
1022
1023     PathLineTo(a);
1024     PathLineTo(b);
1025     PathLineTo(c);
1026     PathLineTo(d);
1027     PathFillConvex(col);
1028 }
1029
1030 void ImDrawList::AddTriangle(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col, float thickness)
1031 {
1032     if ((col & IM_COL32_A_MASK) == 0)
1033         return;
1034
1035     PathLineTo(a);
1036     PathLineTo(b);
1037     PathLineTo(c);
1038     PathStroke(col, true, thickness);
1039 }
1040
1041 void ImDrawList::AddTriangleFilled(const ImVec2& a, const ImVec2& b, const ImVec2& c, ImU32 col)
1042 {
1043     if ((col & IM_COL32_A_MASK) == 0)
1044         return;
1045
1046     PathLineTo(a);
1047     PathLineTo(b);
1048     PathLineTo(c);
1049     PathFillConvex(col);
1050 }
1051
1052 void ImDrawList::AddCircle(const ImVec2& centre, float radius, ImU32 col, int num_segments, float thickness)
1053 {
1054     if ((col & IM_COL32_A_MASK) == 0)
1055         return;
1056
1057     const float a_max = IM_PI*2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
1058     PathArcTo(centre, radius-0.5f, 0.0f, a_max, num_segments);
1059     PathStroke(col, true, thickness);
1060 }
1061
1062 void ImDrawList::AddCircleFilled(const ImVec2& centre, float radius, ImU32 col, int num_segments)
1063 {
1064     if ((col & IM_COL32_A_MASK) == 0)
1065         return;
1066
1067     const float a_max = IM_PI*2.0f * ((float)num_segments - 1.0f) / (float)num_segments;
1068     PathArcTo(centre, radius, 0.0f, a_max, num_segments);
1069     PathFillConvex(col);
1070 }
1071
1072 void ImDrawList::AddBezierCurve(const ImVec2& pos0, const ImVec2& cp0, const ImVec2& cp1, const ImVec2& pos1, ImU32 col, float thickness, int num_segments)
1073 {
1074     if ((col & IM_COL32_A_MASK) == 0)
1075         return;
1076
1077     PathLineTo(pos0);
1078     PathBezierCurveTo(cp0, cp1, pos1, num_segments);
1079     PathStroke(col, false, thickness);
1080 }
1081
1082 void ImDrawList::AddText(const ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end, float wrap_width, const ImVec4* cpu_fine_clip_rect)
1083 {
1084     if ((col & IM_COL32_A_MASK) == 0)
1085         return;
1086
1087     if (text_end == NULL)
1088         text_end = text_begin + strlen(text_begin);
1089     if (text_begin == text_end)
1090         return;
1091
1092     // IMPORTANT: This is one of the few instance of breaking the encapsulation of ImDrawList, as we pull this from ImGui state, but it is just SO useful.
1093     // Might just move Font/FontSize to ImDrawList?
1094     if (font == NULL)
1095         font = GImGui->Font;
1096     if (font_size == 0.0f)
1097         font_size = GImGui->FontSize;
1098
1099     IM_ASSERT(font->ContainerAtlas->TexID == _TextureIdStack.back());  // Use high-level ImGui::PushFont() or low-level ImDrawList::PushTextureId() to change font.
1100
1101     ImVec4 clip_rect = _ClipRectStack.back();
1102     if (cpu_fine_clip_rect)
1103     {
1104         clip_rect.x = ImMax(clip_rect.x, cpu_fine_clip_rect->x);
1105         clip_rect.y = ImMax(clip_rect.y, cpu_fine_clip_rect->y);
1106         clip_rect.z = ImMin(clip_rect.z, cpu_fine_clip_rect->z);
1107         clip_rect.w = ImMin(clip_rect.w, cpu_fine_clip_rect->w);
1108     }
1109     font->RenderText(this, font_size, pos, col, clip_rect, text_begin, text_end, wrap_width, cpu_fine_clip_rect != NULL);
1110 }
1111
1112 void ImDrawList::AddText(const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end)
1113 {
1114     AddText(NULL, 0.0f, pos, col, text_begin, text_end);
1115 }
1116
1117 void ImDrawList::AddImage(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col)
1118 {
1119     if ((col & IM_COL32_A_MASK) == 0)
1120         return;
1121
1122     const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
1123     if (push_texture_id)
1124         PushTextureID(user_texture_id);
1125
1126     PrimReserve(6, 4);
1127     PrimRectUV(a, b, uv_a, uv_b, col);
1128
1129     if (push_texture_id)
1130         PopTextureID();
1131 }
1132
1133 void ImDrawList::AddImageQuad(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& c, const ImVec2& d, const ImVec2& uv_a, const ImVec2& uv_b, const ImVec2& uv_c, const ImVec2& uv_d, ImU32 col)
1134 {
1135     if ((col & IM_COL32_A_MASK) == 0)
1136         return;
1137
1138     const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
1139     if (push_texture_id)
1140         PushTextureID(user_texture_id);
1141
1142     PrimReserve(6, 4);
1143     PrimQuadUV(a, b, c, d, uv_a, uv_b, uv_c, uv_d, col);
1144
1145     if (push_texture_id)
1146         PopTextureID();
1147 }
1148
1149 void ImDrawList::AddImageRounded(ImTextureID user_texture_id, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, ImU32 col, float rounding, int rounding_corners)
1150 {
1151     if ((col & IM_COL32_A_MASK) == 0)
1152         return;
1153
1154     if (rounding <= 0.0f || (rounding_corners & ImDrawCornerFlags_All) == 0)
1155     {
1156         AddImage(user_texture_id, a, b, uv_a, uv_b, col);
1157         return;
1158     }
1159
1160     const bool push_texture_id = _TextureIdStack.empty() || user_texture_id != _TextureIdStack.back();
1161     if (push_texture_id)
1162         PushTextureID(user_texture_id);
1163
1164     int vert_start_idx = VtxBuffer.Size;
1165     PathRect(a, b, rounding, rounding_corners);
1166     PathFillConvex(col);
1167     int vert_end_idx = VtxBuffer.Size;
1168     ImGui::ShadeVertsLinearUV(VtxBuffer.Data + vert_start_idx, VtxBuffer.Data + vert_end_idx, a, b, uv_a, uv_b, true);
1169
1170     if (push_texture_id)
1171         PopTextureID();
1172 }
1173
1174 //-----------------------------------------------------------------------------
1175 // ImDrawData
1176 //-----------------------------------------------------------------------------
1177
1178 // For backward compatibility: convert all buffers from indexed to de-indexed, in case you cannot render indexed. Note: this is slow and most likely a waste of resources. Always prefer indexed rendering!
1179 void ImDrawData::DeIndexAllBuffers()
1180 {
1181     ImVector<ImDrawVert> new_vtx_buffer;
1182     TotalVtxCount = TotalIdxCount = 0;
1183     for (int i = 0; i < CmdListsCount; i++)
1184     {
1185         ImDrawList* cmd_list = CmdLists[i];
1186         if (cmd_list->IdxBuffer.empty())
1187             continue;
1188         new_vtx_buffer.resize(cmd_list->IdxBuffer.Size);
1189         for (int j = 0; j < cmd_list->IdxBuffer.Size; j++)
1190             new_vtx_buffer[j] = cmd_list->VtxBuffer[cmd_list->IdxBuffer[j]];
1191         cmd_list->VtxBuffer.swap(new_vtx_buffer);
1192         cmd_list->IdxBuffer.resize(0);
1193         TotalVtxCount += cmd_list->VtxBuffer.Size;
1194     }
1195 }
1196
1197 // Helper to scale the ClipRect field of each ImDrawCmd. Use if your final output buffer is at a different scale than ImGui expects, or if there is a difference between your window resolution and framebuffer resolution.
1198 void ImDrawData::ScaleClipRects(const ImVec2& scale)
1199 {
1200     for (int i = 0; i < CmdListsCount; i++)
1201     {
1202         ImDrawList* cmd_list = CmdLists[i];
1203         for (int cmd_i = 0; cmd_i < cmd_list->CmdBuffer.Size; cmd_i++)
1204         {
1205             ImDrawCmd* cmd = &cmd_list->CmdBuffer[cmd_i];
1206             cmd->ClipRect = ImVec4(cmd->ClipRect.x * scale.x, cmd->ClipRect.y * scale.y, cmd->ClipRect.z * scale.x, cmd->ClipRect.w * scale.y);
1207         }
1208     }
1209 }
1210
1211 //-----------------------------------------------------------------------------
1212 // Shade functions
1213 //-----------------------------------------------------------------------------
1214
1215 // Generic linear color gradient, write to RGB fields, leave A untouched.
1216 void ImGui::ShadeVertsLinearColorGradientKeepAlpha(ImDrawVert* vert_start, ImDrawVert* vert_end, ImVec2 gradient_p0, ImVec2 gradient_p1, ImU32 col0, ImU32 col1)
1217 {
1218     ImVec2 gradient_extent = gradient_p1 - gradient_p0;
1219     float gradient_inv_length2 = 1.0f / ImLengthSqr(gradient_extent);
1220     for (ImDrawVert* vert = vert_start; vert < vert_end; vert++)
1221     {
1222         float d = ImDot(vert->pos - gradient_p0, gradient_extent);
1223         float t = ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
1224         int r = ImLerp((int)(col0 >> IM_COL32_R_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_R_SHIFT) & 0xFF, t);
1225         int g = ImLerp((int)(col0 >> IM_COL32_G_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_G_SHIFT) & 0xFF, t);
1226         int b = ImLerp((int)(col0 >> IM_COL32_B_SHIFT) & 0xFF, (int)(col1 >> IM_COL32_B_SHIFT) & 0xFF, t);
1227         vert->col = (r << IM_COL32_R_SHIFT) | (g << IM_COL32_G_SHIFT) | (b << IM_COL32_B_SHIFT) | (vert->col & IM_COL32_A_MASK);
1228     }
1229 }
1230
1231 // Scan and shade backward from the end of given vertices. Assume vertices are text only (= vert_start..vert_end going left to right) so we can break as soon as we are out the gradient bounds.
1232 void ImGui::ShadeVertsLinearAlphaGradientForLeftToRightText(ImDrawVert* vert_start, ImDrawVert* vert_end, float gradient_p0_x, float gradient_p1_x)
1233 {
1234     float gradient_extent_x = gradient_p1_x - gradient_p0_x;
1235     float gradient_inv_length2 = 1.0f / (gradient_extent_x * gradient_extent_x);
1236     int full_alpha_count = 0;
1237     for (ImDrawVert* vert = vert_end - 1; vert >= vert_start; vert--)
1238     {
1239         float d = (vert->pos.x - gradient_p0_x) * (gradient_extent_x);
1240         float alpha_mul = 1.0f - ImClamp(d * gradient_inv_length2, 0.0f, 1.0f);
1241         if (alpha_mul >= 1.0f && ++full_alpha_count > 2)
1242             return; // Early out
1243         int a = (int)(((vert->col >> IM_COL32_A_SHIFT) & 0xFF) * alpha_mul);
1244         vert->col = (vert->col & ~IM_COL32_A_MASK) | (a << IM_COL32_A_SHIFT);
1245     }
1246 }
1247
1248 // Distribute UV over (a, b) rectangle
1249 void ImGui::ShadeVertsLinearUV(ImDrawVert* vert_start, ImDrawVert* vert_end, const ImVec2& a, const ImVec2& b, const ImVec2& uv_a, const ImVec2& uv_b, bool clamp)
1250 {
1251     const ImVec2 size = b - a;
1252     const ImVec2 uv_size = uv_b - uv_a;
1253     const ImVec2 scale = ImVec2(
1254         size.x ? (uv_size.x / size.x) : 0.0f,
1255         size.y ? (uv_size.y / size.y) : 0.0f);
1256
1257     if (clamp)
1258     {
1259         const ImVec2 min = ImMin(uv_a, uv_b);
1260         const ImVec2 max = ImMax(uv_a, uv_b);
1261
1262         for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
1263             vertex->uv = ImClamp(uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale), min, max);
1264     }
1265     else
1266     {
1267         for (ImDrawVert* vertex = vert_start; vertex < vert_end; ++vertex)
1268             vertex->uv = uv_a + ImMul(ImVec2(vertex->pos.x, vertex->pos.y) - a, scale);
1269     }
1270 }
1271
1272 //-----------------------------------------------------------------------------
1273 // ImFontConfig
1274 //-----------------------------------------------------------------------------
1275
1276 ImFontConfig::ImFontConfig()
1277 {
1278     FontData = NULL;
1279     FontDataSize = 0;
1280     FontDataOwnedByAtlas = true;
1281     FontNo = 0;
1282     SizePixels = 0.0f;
1283     OversampleH = 3;
1284     OversampleV = 1;
1285     PixelSnapH = false;
1286     GlyphExtraSpacing = ImVec2(0.0f, 0.0f);
1287     GlyphOffset = ImVec2(0.0f, 0.0f);
1288     GlyphRanges = NULL;
1289     MergeMode = false;
1290     RasterizerFlags = 0x00;
1291     RasterizerMultiply = 1.0f;
1292     memset(Name, 0, sizeof(Name));
1293     DstFont = NULL;
1294 }
1295
1296 //-----------------------------------------------------------------------------
1297 // ImFontAtlas
1298 //-----------------------------------------------------------------------------
1299
1300 // A work of art lies ahead! (. = white layer, X = black layer, others are blank)
1301 // The white texels on the top left are the ones we'll use everywhere in ImGui to render filled shapes.
1302 const int FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF = 90;
1303 const int FONT_ATLAS_DEFAULT_TEX_DATA_H      = 27;
1304 const unsigned int FONT_ATLAS_DEFAULT_TEX_DATA_ID = 0x80000000;
1305 static const char FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF * FONT_ATLAS_DEFAULT_TEX_DATA_H + 1] =
1306 {
1307     "..-         -XXXXXXX-    X    -           X           -XXXXXXX          -          XXXXXXX"
1308     "..-         -X.....X-   X.X   -          X.X          -X.....X          -          X.....X"
1309     "---         -XXX.XXX-  X...X  -         X...X         -X....X           -           X....X"
1310     "X           -  X.X  - X.....X -        X.....X        -X...X            -            X...X"
1311     "XX          -  X.X  -X.......X-       X.......X       -X..X.X           -           X.X..X"
1312     "X.X         -  X.X  -XXXX.XXXX-       XXXX.XXXX       -X.X X.X          -          X.X X.X"
1313     "X..X        -  X.X  -   X.X   -          X.X          -XX   X.X         -         X.X   XX"
1314     "X...X       -  X.X  -   X.X   -    XX    X.X    XX    -      X.X        -        X.X      "
1315     "X....X      -  X.X  -   X.X   -   X.X    X.X    X.X   -       X.X       -       X.X       "
1316     "X.....X     -  X.X  -   X.X   -  X..X    X.X    X..X  -        X.X      -      X.X        "
1317     "X......X    -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -         X.X   XX-XX   X.X         "
1318     "X.......X   -  X.X  -   X.X   -X.....................X-          X.X X.X-X.X X.X          "
1319     "X........X  -  X.X  -   X.X   - X...XXXXXX.XXXXXX...X -           X.X..X-X..X.X           "
1320     "X.........X -XXX.XXX-   X.X   -  X..X    X.X    X..X  -            X...X-X...X            "
1321     "X..........X-X.....X-   X.X   -   X.X    X.X    X.X   -           X....X-X....X           "
1322     "X......XXXXX-XXXXXXX-   X.X   -    XX    X.X    XX    -          X.....X-X.....X          "
1323     "X...X..X    ---------   X.X   -          X.X          -          XXXXXXX-XXXXXXX          "
1324     "X..X X..X   -       -XXXX.XXXX-       XXXX.XXXX       ------------------------------------"
1325     "X.X  X..X   -       -X.......X-       X.......X       -    XX           XX    -           "
1326     "XX    X..X  -       - X.....X -        X.....X        -   X.X           X.X   -           "
1327     "      X..X          -  X...X  -         X...X         -  X..X           X..X  -           "
1328     "       XX           -   X.X   -          X.X          - X...XXXXXXXXXXXXX...X -           "
1329     "------------        -    X    -           X           -X.....................X-           "
1330     "                    ----------------------------------- X...XXXXXXXXXXXXX...X -           "
1331     "                                                      -  X..X           X..X  -           "
1332     "                                                      -   X.X           X.X   -           "
1333     "                                                      -    XX           XX    -           "
1334 };
1335
1336 static const ImVec2 FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[ImGuiMouseCursor_Count_][3] =
1337 {
1338     // Pos ........ Size ......... Offset ......
1339     { ImVec2(0,3),  ImVec2(12,19), ImVec2( 0, 0) }, // ImGuiMouseCursor_Arrow
1340     { ImVec2(13,0), ImVec2(7,16),  ImVec2( 4, 8) }, // ImGuiMouseCursor_TextInput
1341     { ImVec2(31,0), ImVec2(23,23), ImVec2(11,11) }, // ImGuiMouseCursor_Move
1342     { ImVec2(21,0), ImVec2( 9,23), ImVec2( 5,11) }, // ImGuiMouseCursor_ResizeNS
1343     { ImVec2(55,18),ImVec2(23, 9), ImVec2(11, 5) }, // ImGuiMouseCursor_ResizeEW
1344     { ImVec2(73,0), ImVec2(17,17), ImVec2( 9, 9) }, // ImGuiMouseCursor_ResizeNESW
1345     { ImVec2(55,0), ImVec2(17,17), ImVec2( 9, 9) }, // ImGuiMouseCursor_ResizeNWSE
1346 };
1347
1348
1349 ImFontAtlas::ImFontAtlas()
1350 {
1351     TexID = NULL;
1352     TexDesiredWidth = 0;
1353     TexGlyphPadding = 1;
1354     TexPixelsAlpha8 = NULL;
1355     TexPixelsRGBA32 = NULL;
1356     TexWidth = TexHeight = 0;
1357     TexUvWhitePixel = ImVec2(0, 0);
1358     for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
1359         CustomRectIds[n] = -1;
1360 }
1361
1362 ImFontAtlas::~ImFontAtlas()
1363 {
1364     Clear();
1365 }
1366
1367 void    ImFontAtlas::ClearInputData()
1368 {
1369     for (int i = 0; i < ConfigData.Size; i++)
1370         if (ConfigData[i].FontData && ConfigData[i].FontDataOwnedByAtlas)
1371         {
1372             ImGui::MemFree(ConfigData[i].FontData);
1373             ConfigData[i].FontData = NULL;
1374         }
1375
1376     // When clearing this we lose access to  the font name and other information used to build the font.
1377     for (int i = 0; i < Fonts.Size; i++)
1378         if (Fonts[i]->ConfigData >= ConfigData.Data && Fonts[i]->ConfigData < ConfigData.Data + ConfigData.Size)
1379         {
1380             Fonts[i]->ConfigData = NULL;
1381             Fonts[i]->ConfigDataCount = 0;
1382         }
1383     ConfigData.clear();
1384     CustomRects.clear();
1385     for (int n = 0; n < IM_ARRAYSIZE(CustomRectIds); n++)
1386         CustomRectIds[n] = -1;
1387 }
1388
1389 void    ImFontAtlas::ClearTexData()
1390 {
1391     if (TexPixelsAlpha8)
1392         ImGui::MemFree(TexPixelsAlpha8);
1393     if (TexPixelsRGBA32)
1394         ImGui::MemFree(TexPixelsRGBA32);
1395     TexPixelsAlpha8 = NULL;
1396     TexPixelsRGBA32 = NULL;
1397 }
1398
1399 void    ImFontAtlas::ClearFonts()
1400 {
1401     for (int i = 0; i < Fonts.Size; i++)
1402     {
1403         Fonts[i]->~ImFont();
1404         ImGui::MemFree(Fonts[i]);
1405     }
1406     Fonts.clear();
1407 }
1408
1409 void    ImFontAtlas::Clear()
1410 {
1411     ClearInputData();
1412     ClearTexData();
1413     ClearFonts();
1414 }
1415
1416 void    ImFontAtlas::GetTexDataAsAlpha8(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
1417 {
1418     // Build atlas on demand
1419     if (TexPixelsAlpha8 == NULL)
1420     {
1421         if (ConfigData.empty())
1422             AddFontDefault();
1423         Build();
1424     }
1425
1426     *out_pixels = TexPixelsAlpha8;
1427     if (out_width) *out_width = TexWidth;
1428     if (out_height) *out_height = TexHeight;
1429     if (out_bytes_per_pixel) *out_bytes_per_pixel = 1;
1430 }
1431
1432 void    ImFontAtlas::GetTexDataAsRGBA32(unsigned char** out_pixels, int* out_width, int* out_height, int* out_bytes_per_pixel)
1433 {
1434     // Convert to RGBA32 format on demand
1435     // Although it is likely to be the most commonly used format, our font rendering is 1 channel / 8 bpp
1436     if (!TexPixelsRGBA32)
1437     {
1438         unsigned char* pixels;
1439         GetTexDataAsAlpha8(&pixels, NULL, NULL);
1440         TexPixelsRGBA32 = (unsigned int*)ImGui::MemAlloc((size_t)(TexWidth * TexHeight * 4));
1441         const unsigned char* src = pixels;
1442         unsigned int* dst = TexPixelsRGBA32;
1443         for (int n = TexWidth * TexHeight; n > 0; n--)
1444             *dst++ = IM_COL32(255, 255, 255, (unsigned int)(*src++));
1445     }
1446
1447     *out_pixels = (unsigned char*)TexPixelsRGBA32;
1448     if (out_width) *out_width = TexWidth;
1449     if (out_height) *out_height = TexHeight;
1450     if (out_bytes_per_pixel) *out_bytes_per_pixel = 4;
1451 }
1452
1453 ImFont* ImFontAtlas::AddFont(const ImFontConfig* font_cfg)
1454 {
1455     IM_ASSERT(font_cfg->FontData != NULL && font_cfg->FontDataSize > 0);
1456     IM_ASSERT(font_cfg->SizePixels > 0.0f);
1457
1458     // Create new font
1459     if (!font_cfg->MergeMode)
1460     {
1461         ImFont* font = (ImFont*)ImGui::MemAlloc(sizeof(ImFont));
1462         IM_PLACEMENT_NEW(font) ImFont();
1463         Fonts.push_back(font);
1464     }
1465     else
1466     {
1467         IM_ASSERT(!Fonts.empty()); // When using MergeMode make sure that a font has already been added before. You can use ImGui::GetIO().Fonts->AddFontDefault() to add the default imgui font.
1468     }
1469
1470     ConfigData.push_back(*font_cfg);
1471     ImFontConfig& new_font_cfg = ConfigData.back();
1472     if (!new_font_cfg.DstFont)
1473         new_font_cfg.DstFont = Fonts.back();
1474     if (!new_font_cfg.FontDataOwnedByAtlas)
1475     {
1476         new_font_cfg.FontData = ImGui::MemAlloc(new_font_cfg.FontDataSize);
1477         new_font_cfg.FontDataOwnedByAtlas = true;
1478         memcpy(new_font_cfg.FontData, font_cfg->FontData, (size_t)new_font_cfg.FontDataSize);
1479     }
1480
1481     // Invalidate texture
1482     ClearTexData();
1483     return new_font_cfg.DstFont;
1484 }
1485
1486 // Default font TTF is compressed with stb_compress then base85 encoded (see extra_fonts/binary_to_compressed_c.cpp for encoder)
1487 static unsigned int stb_decompress_length(unsigned char *input);
1488 static unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length);
1489 static const char*  GetDefaultCompressedFontDataTTFBase85();
1490 static unsigned int Decode85Byte(char c)                                    { return c >= '\\' ? c-36 : c-35; }
1491 static void         Decode85(const unsigned char* src, unsigned char* dst)
1492 {
1493     while (*src)
1494     {
1495         unsigned int tmp = Decode85Byte(src[0]) + 85*(Decode85Byte(src[1]) + 85*(Decode85Byte(src[2]) + 85*(Decode85Byte(src[3]) + 85*Decode85Byte(src[4]))));
1496         dst[0] = ((tmp >> 0) & 0xFF); dst[1] = ((tmp >> 8) & 0xFF); dst[2] = ((tmp >> 16) & 0xFF); dst[3] = ((tmp >> 24) & 0xFF);   // We can't assume little-endianness.
1497         src += 5;
1498         dst += 4;
1499     }
1500 }
1501
1502 // Load embedded ProggyClean.ttf at size 13, disable oversampling
1503 ImFont* ImFontAtlas::AddFontDefault(const ImFontConfig* font_cfg_template)
1504 {
1505     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
1506     if (!font_cfg_template)
1507     {
1508         font_cfg.OversampleH = font_cfg.OversampleV = 1;
1509         font_cfg.PixelSnapH = true;
1510     }
1511     if (font_cfg.Name[0] == '\0') strcpy(font_cfg.Name, "ProggyClean.ttf, 13px");
1512     if (font_cfg.SizePixels <= 0.0f) font_cfg.SizePixels = 13.0f;
1513
1514     const char* ttf_compressed_base85 = GetDefaultCompressedFontDataTTFBase85();
1515     ImFont* font = AddFontFromMemoryCompressedBase85TTF(ttf_compressed_base85, font_cfg.SizePixels, &font_cfg, GetGlyphRangesDefault());
1516     return font;
1517 }
1518
1519 ImFont* ImFontAtlas::AddFontFromFileTTF(const char* filename, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
1520 {
1521     int data_size = 0;
1522     void* data = ImFileLoadToMemory(filename, "rb", &data_size, 0);
1523     if (!data)
1524     {
1525         IM_ASSERT(0); // Could not load file.
1526         return NULL;
1527     }
1528     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
1529     if (font_cfg.Name[0] == '\0')
1530     {
1531         // Store a short copy of filename into into the font name for convenience
1532         const char* p;
1533         for (p = filename + strlen(filename); p > filename && p[-1] != '/' && p[-1] != '\\'; p--) {}
1534         snprintf(font_cfg.Name, IM_ARRAYSIZE(font_cfg.Name), "%s, %.0fpx", p, size_pixels);
1535     }
1536     return AddFontFromMemoryTTF(data, data_size, size_pixels, &font_cfg, glyph_ranges);
1537 }
1538
1539 // NB: Transfer ownership of 'ttf_data' to ImFontAtlas, unless font_cfg_template->FontDataOwnedByAtlas == false. Owned TTF buffer will be deleted after Build().
1540 ImFont* ImFontAtlas::AddFontFromMemoryTTF(void* ttf_data, int ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
1541 {
1542     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
1543     IM_ASSERT(font_cfg.FontData == NULL);
1544     font_cfg.FontData = ttf_data;
1545     font_cfg.FontDataSize = ttf_size;
1546     font_cfg.SizePixels = size_pixels;
1547     if (glyph_ranges)
1548         font_cfg.GlyphRanges = glyph_ranges;
1549     return AddFont(&font_cfg);
1550 }
1551
1552 ImFont* ImFontAtlas::AddFontFromMemoryCompressedTTF(const void* compressed_ttf_data, int compressed_ttf_size, float size_pixels, const ImFontConfig* font_cfg_template, const ImWchar* glyph_ranges)
1553 {
1554     const unsigned int buf_decompressed_size = stb_decompress_length((unsigned char*)compressed_ttf_data);
1555     unsigned char* buf_decompressed_data = (unsigned char *)ImGui::MemAlloc(buf_decompressed_size);
1556     stb_decompress(buf_decompressed_data, (unsigned char*)compressed_ttf_data, (unsigned int)compressed_ttf_size);
1557
1558     ImFontConfig font_cfg = font_cfg_template ? *font_cfg_template : ImFontConfig();
1559     IM_ASSERT(font_cfg.FontData == NULL);
1560     font_cfg.FontDataOwnedByAtlas = true;
1561     return AddFontFromMemoryTTF(buf_decompressed_data, (int)buf_decompressed_size, size_pixels, &font_cfg, glyph_ranges);
1562 }
1563
1564 ImFont* ImFontAtlas::AddFontFromMemoryCompressedBase85TTF(const char* compressed_ttf_data_base85, float size_pixels, const ImFontConfig* font_cfg, const ImWchar* glyph_ranges)
1565 {
1566     int compressed_ttf_size = (((int)strlen(compressed_ttf_data_base85) + 4) / 5) * 4;
1567     void* compressed_ttf = ImGui::MemAlloc((size_t)compressed_ttf_size);
1568     Decode85((const unsigned char*)compressed_ttf_data_base85, (unsigned char*)compressed_ttf);
1569     ImFont* font = AddFontFromMemoryCompressedTTF(compressed_ttf, compressed_ttf_size, size_pixels, font_cfg, glyph_ranges);
1570     ImGui::MemFree(compressed_ttf);
1571     return font;
1572 }
1573
1574 int ImFontAtlas::AddCustomRectRegular(unsigned int id, int width, int height)
1575 {
1576     IM_ASSERT(id >= 0x10000);
1577     IM_ASSERT(width > 0 && width <= 0xFFFF);
1578     IM_ASSERT(height > 0 && height <= 0xFFFF);
1579     CustomRect r;
1580     r.ID = id;
1581     r.Width = (unsigned short)width;
1582     r.Height = (unsigned short)height;
1583     CustomRects.push_back(r);
1584     return CustomRects.Size - 1; // Return index
1585 }
1586
1587 int ImFontAtlas::AddCustomRectFontGlyph(ImFont* font, ImWchar id, int width, int height, float advance_x, const ImVec2& offset)
1588 {
1589     IM_ASSERT(font != NULL);
1590     IM_ASSERT(width > 0 && width <= 0xFFFF);
1591     IM_ASSERT(height > 0 && height <= 0xFFFF);
1592     CustomRect r;
1593     r.ID = id;
1594     r.Width = (unsigned short)width;
1595     r.Height = (unsigned short)height;
1596     r.GlyphAdvanceX = advance_x;
1597     r.GlyphOffset = offset;
1598     r.Font = font;
1599     CustomRects.push_back(r);
1600     return CustomRects.Size - 1; // Return index
1601 }
1602
1603 void ImFontAtlas::CalcCustomRectUV(const CustomRect* rect, ImVec2* out_uv_min, ImVec2* out_uv_max)
1604 {
1605     IM_ASSERT(TexWidth > 0 && TexHeight > 0);   // Font atlas needs to be built before we can calculate UV coordinates
1606     IM_ASSERT(rect->IsPacked());                // Make sure the rectangle has been packed
1607     *out_uv_min = ImVec2((float)rect->X / TexWidth, (float)rect->Y / TexHeight);
1608     *out_uv_max = ImVec2((float)(rect->X + rect->Width) / TexWidth, (float)(rect->Y + rect->Height) / TexHeight);
1609 }
1610
1611 bool    ImFontAtlas::Build()
1612 {
1613     return ImFontAtlasBuildWithStbTruetype(this);
1614 }
1615
1616 void    ImFontAtlasBuildMultiplyCalcLookupTable(unsigned char out_table[256], float in_brighten_factor)
1617 {
1618     for (unsigned int i = 0; i < 256; i++)
1619     {
1620         unsigned int value = (unsigned int)(i * in_brighten_factor);
1621         out_table[i] = value > 255 ? 255 : (value & 0xFF);
1622     }
1623 }
1624
1625 void    ImFontAtlasBuildMultiplyRectAlpha8(const unsigned char table[256], unsigned char* pixels, int x, int y, int w, int h, int stride)
1626 {
1627     unsigned char* data = pixels + x + y * stride;
1628     for (int j = h; j > 0; j--, data += stride)
1629         for (int i = 0; i < w; i++)
1630             data[i] = table[data[i]];
1631 }
1632
1633 bool    ImFontAtlasBuildWithStbTruetype(ImFontAtlas* atlas)
1634 {
1635     IM_ASSERT(atlas->ConfigData.Size > 0);
1636
1637     ImFontAtlasBuildRegisterDefaultCustomRects(atlas);
1638
1639     atlas->TexID = NULL;
1640     atlas->TexWidth = atlas->TexHeight = 0;
1641     atlas->TexUvWhitePixel = ImVec2(0, 0);
1642     atlas->ClearTexData();
1643
1644     // Count glyphs/ranges
1645     int total_glyphs_count = 0;
1646     int total_ranges_count = 0;
1647     for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
1648     {
1649         ImFontConfig& cfg = atlas->ConfigData[input_i];
1650         if (!cfg.GlyphRanges)
1651             cfg.GlyphRanges = atlas->GetGlyphRangesDefault();
1652         for (const ImWchar* in_range = cfg.GlyphRanges; in_range[0] && in_range[1]; in_range += 2, total_ranges_count++)
1653             total_glyphs_count += (in_range[1] - in_range[0]) + 1;
1654     }
1655
1656     // We need a width for the skyline algorithm. Using a dumb heuristic here to decide of width. User can override TexDesiredWidth and TexGlyphPadding if they wish.
1657     // Width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
1658     atlas->TexWidth = (atlas->TexDesiredWidth > 0) ? atlas->TexDesiredWidth : (total_glyphs_count > 4000) ? 4096 : (total_glyphs_count > 2000) ? 2048 : (total_glyphs_count > 1000) ? 1024 : 512;
1659     atlas->TexHeight = 0;
1660
1661     // Start packing
1662     const int max_tex_height = 1024*32;
1663     stbtt_pack_context spc = {};
1664     stbtt_PackBegin(&spc, NULL, atlas->TexWidth, max_tex_height, 0, atlas->TexGlyphPadding, NULL);
1665     stbtt_PackSetOversampling(&spc, 1, 1);
1666
1667     // Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
1668     ImFontAtlasBuildPackCustomRects(atlas, spc.pack_info);
1669
1670     // Initialize font information (so we can error without any cleanup)
1671     struct ImFontTempBuildData
1672     {
1673         stbtt_fontinfo      FontInfo;
1674         stbrp_rect*         Rects;
1675         int                 RectsCount;
1676         stbtt_pack_range*   Ranges;
1677         int                 RangesCount;
1678     };
1679     ImFontTempBuildData* tmp_array = (ImFontTempBuildData*)ImGui::MemAlloc((size_t)atlas->ConfigData.Size * sizeof(ImFontTempBuildData));
1680     for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
1681     {
1682         ImFontConfig& cfg = atlas->ConfigData[input_i];
1683         ImFontTempBuildData& tmp = tmp_array[input_i];
1684         IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
1685
1686         const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)cfg.FontData, cfg.FontNo);
1687         IM_ASSERT(font_offset >= 0);
1688         if (!stbtt_InitFont(&tmp.FontInfo, (unsigned char*)cfg.FontData, font_offset))
1689         {
1690             ImGui::MemFree(tmp_array);
1691             return false;
1692         }
1693     }
1694
1695     // Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
1696     int buf_packedchars_n = 0, buf_rects_n = 0, buf_ranges_n = 0;
1697     stbtt_packedchar* buf_packedchars = (stbtt_packedchar*)ImGui::MemAlloc(total_glyphs_count * sizeof(stbtt_packedchar));
1698     stbrp_rect* buf_rects = (stbrp_rect*)ImGui::MemAlloc(total_glyphs_count * sizeof(stbrp_rect));
1699     stbtt_pack_range* buf_ranges = (stbtt_pack_range*)ImGui::MemAlloc(total_ranges_count * sizeof(stbtt_pack_range));
1700     memset(buf_packedchars, 0, total_glyphs_count * sizeof(stbtt_packedchar));
1701     memset(buf_rects, 0, total_glyphs_count * sizeof(stbrp_rect));              // Unnecessary but let's clear this for the sake of sanity.
1702     memset(buf_ranges, 0, total_ranges_count * sizeof(stbtt_pack_range));
1703
1704     // First font pass: pack all glyphs (no rendering at this point, we are working with rectangles in an infinitely tall texture at this point)
1705     for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
1706     {
1707         ImFontConfig& cfg = atlas->ConfigData[input_i];
1708         ImFontTempBuildData& tmp = tmp_array[input_i];
1709
1710         // Setup ranges
1711         int font_glyphs_count = 0;
1712         int font_ranges_count = 0;
1713         for (const ImWchar* in_range = cfg.GlyphRanges; in_range[0] && in_range[1]; in_range += 2, font_ranges_count++)
1714             font_glyphs_count += (in_range[1] - in_range[0]) + 1;
1715         tmp.Ranges = buf_ranges + buf_ranges_n;
1716         tmp.RangesCount = font_ranges_count;
1717         buf_ranges_n += font_ranges_count;
1718         for (int i = 0; i < font_ranges_count; i++)
1719         {
1720             const ImWchar* in_range = &cfg.GlyphRanges[i * 2];
1721             stbtt_pack_range& range = tmp.Ranges[i];
1722             range.font_size = cfg.SizePixels;
1723             range.first_unicode_codepoint_in_range = in_range[0];
1724             range.num_chars = (in_range[1] - in_range[0]) + 1;
1725             range.chardata_for_range = buf_packedchars + buf_packedchars_n;
1726             buf_packedchars_n += range.num_chars;
1727         }
1728
1729         // Pack
1730         tmp.Rects = buf_rects + buf_rects_n;
1731         tmp.RectsCount = font_glyphs_count;
1732         buf_rects_n += font_glyphs_count;
1733         stbtt_PackSetOversampling(&spc, cfg.OversampleH, cfg.OversampleV);
1734         int n = stbtt_PackFontRangesGatherRects(&spc, &tmp.FontInfo, tmp.Ranges, tmp.RangesCount, tmp.Rects);
1735         IM_ASSERT(n == font_glyphs_count);
1736         stbrp_pack_rects((stbrp_context*)spc.pack_info, tmp.Rects, n);
1737
1738         // Extend texture height
1739         for (int i = 0; i < n; i++)
1740             if (tmp.Rects[i].was_packed)
1741                 atlas->TexHeight = ImMax(atlas->TexHeight, tmp.Rects[i].y + tmp.Rects[i].h);
1742     }
1743     IM_ASSERT(buf_rects_n == total_glyphs_count);
1744     IM_ASSERT(buf_packedchars_n == total_glyphs_count);
1745     IM_ASSERT(buf_ranges_n == total_ranges_count);
1746
1747     // Create texture
1748     atlas->TexHeight = ImUpperPowerOfTwo(atlas->TexHeight);
1749     atlas->TexPixelsAlpha8 = (unsigned char*)ImGui::MemAlloc(atlas->TexWidth * atlas->TexHeight);
1750     memset(atlas->TexPixelsAlpha8, 0, atlas->TexWidth * atlas->TexHeight);
1751     spc.pixels = atlas->TexPixelsAlpha8;
1752     spc.height = atlas->TexHeight;
1753
1754     // Second pass: render font characters
1755     for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
1756     {
1757         ImFontConfig& cfg = atlas->ConfigData[input_i];
1758         ImFontTempBuildData& tmp = tmp_array[input_i];
1759         stbtt_PackSetOversampling(&spc, cfg.OversampleH, cfg.OversampleV);
1760         stbtt_PackFontRangesRenderIntoRects(&spc, &tmp.FontInfo, tmp.Ranges, tmp.RangesCount, tmp.Rects);
1761         if (cfg.RasterizerMultiply != 1.0f)
1762         {
1763             unsigned char multiply_table[256];
1764             ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
1765             for (const stbrp_rect* r = tmp.Rects; r != tmp.Rects + tmp.RectsCount; r++)
1766                 if (r->was_packed)
1767                     ImFontAtlasBuildMultiplyRectAlpha8(multiply_table, spc.pixels, r->x, r->y, r->w, r->h, spc.stride_in_bytes);
1768         }
1769         tmp.Rects = NULL;
1770     }
1771
1772     // End packing
1773     stbtt_PackEnd(&spc);
1774     ImGui::MemFree(buf_rects);
1775     buf_rects = NULL;
1776
1777     // Third pass: setup ImFont and glyphs for runtime
1778     for (int input_i = 0; input_i < atlas->ConfigData.Size; input_i++)
1779     {
1780         ImFontConfig& cfg = atlas->ConfigData[input_i];
1781         ImFontTempBuildData& tmp = tmp_array[input_i];
1782         ImFont* dst_font = cfg.DstFont; // We can have multiple input fonts writing into a same destination font (when using MergeMode=true)
1783
1784         const float font_scale = stbtt_ScaleForPixelHeight(&tmp.FontInfo, cfg.SizePixels);
1785         int unscaled_ascent, unscaled_descent, unscaled_line_gap;
1786         stbtt_GetFontVMetrics(&tmp.FontInfo, &unscaled_ascent, &unscaled_descent, &unscaled_line_gap);
1787
1788         const float ascent = unscaled_ascent * font_scale;
1789         const float descent = unscaled_descent * font_scale;
1790         ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
1791         const float off_x = cfg.GlyphOffset.x;
1792         const float off_y = cfg.GlyphOffset.y + (float)(int)(dst_font->Ascent + 0.5f);
1793
1794         for (int i = 0; i < tmp.RangesCount; i++)
1795         {
1796             stbtt_pack_range& range = tmp.Ranges[i];
1797             for (int char_idx = 0; char_idx < range.num_chars; char_idx += 1)
1798             {
1799                 const stbtt_packedchar& pc = range.chardata_for_range[char_idx];
1800                 if (!pc.x0 && !pc.x1 && !pc.y0 && !pc.y1)
1801                     continue;
1802
1803                 const int codepoint = range.first_unicode_codepoint_in_range + char_idx;
1804                 if (cfg.MergeMode && dst_font->FindGlyph((unsigned short)codepoint))
1805                     continue;
1806
1807                 stbtt_aligned_quad q;
1808                 float dummy_x = 0.0f, dummy_y = 0.0f;
1809                 stbtt_GetPackedQuad(range.chardata_for_range, atlas->TexWidth, atlas->TexHeight, char_idx, &dummy_x, &dummy_y, &q, 0);
1810                 dst_font->AddGlyph((ImWchar)codepoint, q.x0 + off_x, q.y0 + off_y, q.x1 + off_x, q.y1 + off_y, q.s0, q.t0, q.s1, q.t1, pc.xadvance);
1811             }
1812         }
1813     }
1814
1815     // Cleanup temporaries
1816     ImGui::MemFree(buf_packedchars);
1817     ImGui::MemFree(buf_ranges);
1818     ImGui::MemFree(tmp_array);
1819
1820     ImFontAtlasBuildFinish(atlas);
1821
1822     return true;
1823 }
1824
1825 void ImFontAtlasBuildRegisterDefaultCustomRects(ImFontAtlas* atlas)
1826 {
1827     if (atlas->CustomRectIds[0] < 0)
1828         atlas->CustomRectIds[0] = atlas->AddCustomRectRegular(FONT_ATLAS_DEFAULT_TEX_DATA_ID, FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF*2+1, FONT_ATLAS_DEFAULT_TEX_DATA_H);
1829 }
1830
1831 void ImFontAtlasBuildSetupFont(ImFontAtlas* atlas, ImFont* font, ImFontConfig* font_config, float ascent, float descent)
1832 {
1833     if (!font_config->MergeMode)
1834     {
1835         font->ClearOutputData();
1836         font->FontSize = font_config->SizePixels;
1837         font->ConfigData = font_config;
1838         font->ContainerAtlas = atlas;
1839         font->Ascent = ascent;
1840         font->Descent = descent;
1841     }
1842     font->ConfigDataCount++;
1843 }
1844
1845 void ImFontAtlasBuildPackCustomRects(ImFontAtlas* atlas, void* pack_context_opaque)
1846 {
1847     stbrp_context* pack_context = (stbrp_context*)pack_context_opaque;
1848
1849     ImVector<ImFontAtlas::CustomRect>& user_rects = atlas->CustomRects;
1850     IM_ASSERT(user_rects.Size >= 1); // We expect at least the default custom rects to be registered, else something went wrong.
1851
1852     ImVector<stbrp_rect> pack_rects;
1853     pack_rects.resize(user_rects.Size);
1854     memset(pack_rects.Data, 0, sizeof(stbrp_rect) * user_rects.Size);
1855     for (int i = 0; i < user_rects.Size; i++)
1856     {
1857         pack_rects[i].w = user_rects[i].Width;
1858         pack_rects[i].h = user_rects[i].Height;
1859     }
1860     stbrp_pack_rects(pack_context, &pack_rects[0], pack_rects.Size);
1861     for (int i = 0; i < pack_rects.Size; i++)
1862         if (pack_rects[i].was_packed)
1863         {
1864             user_rects[i].X = pack_rects[i].x;
1865             user_rects[i].Y = pack_rects[i].y;
1866             IM_ASSERT(pack_rects[i].w == user_rects[i].Width && pack_rects[i].h == user_rects[i].Height);
1867             atlas->TexHeight = ImMax(atlas->TexHeight, pack_rects[i].y + pack_rects[i].h);
1868         }
1869 }
1870
1871 static void ImFontAtlasBuildRenderDefaultTexData(ImFontAtlas* atlas)
1872 {
1873     IM_ASSERT(atlas->CustomRectIds[0] >= 0);
1874     ImFontAtlas::CustomRect& r = atlas->CustomRects[atlas->CustomRectIds[0]];
1875     IM_ASSERT(r.ID == FONT_ATLAS_DEFAULT_TEX_DATA_ID);
1876     IM_ASSERT(r.Width == FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF*2+1);
1877     IM_ASSERT(r.Height == FONT_ATLAS_DEFAULT_TEX_DATA_H);
1878     IM_ASSERT(r.IsPacked());
1879     IM_ASSERT(atlas->TexPixelsAlpha8 != NULL);
1880
1881     // Render/copy pixels
1882     for (int y = 0, n = 0; y < FONT_ATLAS_DEFAULT_TEX_DATA_H; y++)
1883         for (int x = 0; x < FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF; x++, n++)
1884         {
1885             const int offset0 = (int)(r.X + x) + (int)(r.Y + y) * atlas->TexWidth;
1886             const int offset1 = offset0 + FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
1887             atlas->TexPixelsAlpha8[offset0] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == '.' ? 0xFF : 0x00;
1888             atlas->TexPixelsAlpha8[offset1] = FONT_ATLAS_DEFAULT_TEX_DATA_PIXELS[n] == 'X' ? 0xFF : 0x00;
1889         }
1890     const ImVec2 tex_uv_scale(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
1891     atlas->TexUvWhitePixel = ImVec2((r.X + 0.5f) * tex_uv_scale.x, (r.Y + 0.5f) * tex_uv_scale.y);
1892
1893     // Setup mouse cursors
1894     for (int type = 0; type < ImGuiMouseCursor_Count_; type++)
1895     {
1896         ImGuiMouseCursorData& cursor_data = GImGui->MouseCursorData[type];
1897         ImVec2 pos = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[type][0] + ImVec2((float)r.X, (float)r.Y);
1898         const ImVec2 size = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[type][1];
1899         cursor_data.Type = type;
1900         cursor_data.Size = size;
1901         cursor_data.HotOffset = FONT_ATLAS_DEFAULT_TEX_CURSOR_DATA[type][2];
1902         cursor_data.TexUvMin[0] = (pos) * tex_uv_scale;
1903         cursor_data.TexUvMax[0] = (pos + size) * tex_uv_scale;
1904         pos.x += FONT_ATLAS_DEFAULT_TEX_DATA_W_HALF + 1;
1905         cursor_data.TexUvMin[1] = (pos) * tex_uv_scale;
1906         cursor_data.TexUvMax[1] = (pos + size) * tex_uv_scale;
1907     }
1908 }
1909
1910 void ImFontAtlasBuildFinish(ImFontAtlas* atlas)
1911 {
1912     // Render into our custom data block
1913     ImFontAtlasBuildRenderDefaultTexData(atlas);
1914
1915     // Register custom rectangle glyphs
1916     for (int i = 0; i < atlas->CustomRects.Size; i++)
1917     {
1918         const ImFontAtlas::CustomRect& r = atlas->CustomRects[i];
1919         if (r.Font == NULL || r.ID > 0x10000)
1920             continue;
1921
1922         IM_ASSERT(r.Font->ContainerAtlas == atlas);
1923         ImVec2 uv0, uv1;
1924         atlas->CalcCustomRectUV(&r, &uv0, &uv1);
1925         r.Font->AddGlyph((ImWchar)r.ID, r.GlyphOffset.x, r.GlyphOffset.y, r.GlyphOffset.x + r.Width, r.GlyphOffset.y + r.Height, uv0.x, uv0.y, uv1.x, uv1.y, r.GlyphAdvanceX);
1926     }
1927
1928     // Build all fonts lookup tables
1929     for (int i = 0; i < atlas->Fonts.Size; i++)
1930         atlas->Fonts[i]->BuildLookupTable();
1931 }
1932
1933 // Retrieve list of range (2 int per range, values are inclusive)
1934 const ImWchar*   ImFontAtlas::GetGlyphRangesDefault()
1935 {
1936     static const ImWchar ranges[] =
1937     {
1938         0x0020, 0x00FF, // Basic Latin + Latin Supplement
1939         0,
1940     };
1941     return &ranges[0];
1942 }
1943
1944 const ImWchar*  ImFontAtlas::GetGlyphRangesKorean()
1945 {
1946     static const ImWchar ranges[] =
1947     {
1948         0x0020, 0x00FF, // Basic Latin + Latin Supplement
1949         0x3131, 0x3163, // Korean alphabets
1950         0xAC00, 0xD79D, // Korean characters
1951         0,
1952     };
1953     return &ranges[0];
1954 }
1955
1956 const ImWchar*  ImFontAtlas::GetGlyphRangesChinese()
1957 {
1958     static const ImWchar ranges[] =
1959     {
1960         0x0020, 0x00FF, // Basic Latin + Latin Supplement
1961         0x3000, 0x30FF, // Punctuations, Hiragana, Katakana
1962         0x31F0, 0x31FF, // Katakana Phonetic Extensions
1963         0xFF00, 0xFFEF, // Half-width characters
1964         0x4e00, 0x9FAF, // CJK Ideograms
1965         0,
1966     };
1967     return &ranges[0];
1968 }
1969
1970 const ImWchar*  ImFontAtlas::GetGlyphRangesJapanese()
1971 {
1972     // Store the 1946 ideograms code points as successive offsets from the initial unicode codepoint 0x4E00. Each offset has an implicit +1.
1973     // This encoding is designed to helps us reduce the source code size.
1974     // FIXME: Source a list of the revised 2136 joyo kanji list from 2010 and rebuild this.
1975     // The current list was sourced from http://theinstructionlimit.com/author/renaudbedardrenaudbedard/page/3
1976     // Note that you may use ImFontAtlas::GlyphRangesBuilder to create your own ranges, by merging existing ranges or adding new characters.
1977     static const short offsets_from_0x4E00[] =
1978     {
1979         -1,0,1,3,0,0,0,0,1,0,5,1,1,0,7,4,6,10,0,1,9,9,7,1,3,19,1,10,7,1,0,1,0,5,1,0,6,4,2,6,0,0,12,6,8,0,3,5,0,1,0,9,0,0,8,1,1,3,4,5,13,0,0,8,2,17,
1980         4,3,1,1,9,6,0,0,0,2,1,3,2,22,1,9,11,1,13,1,3,12,0,5,9,2,0,6,12,5,3,12,4,1,2,16,1,1,4,6,5,3,0,6,13,15,5,12,8,14,0,0,6,15,3,6,0,18,8,1,6,14,1,
1981         5,4,12,24,3,13,12,10,24,0,0,0,1,0,1,1,2,9,10,2,2,0,0,3,3,1,0,3,8,0,3,2,4,4,1,6,11,10,14,6,15,3,4,15,1,0,0,5,2,2,0,0,1,6,5,5,6,0,3,6,5,0,0,1,0,
1982         11,2,2,8,4,7,0,10,0,1,2,17,19,3,0,2,5,0,6,2,4,4,6,1,1,11,2,0,3,1,2,1,2,10,7,6,3,16,0,8,24,0,0,3,1,1,3,0,1,6,0,0,0,2,0,1,5,15,0,1,0,0,2,11,19,
1983         1,4,19,7,6,5,1,0,0,0,0,5,1,0,1,9,0,0,5,0,2,0,1,0,3,0,11,3,0,2,0,0,0,0,0,9,3,6,4,12,0,14,0,0,29,10,8,0,14,37,13,0,31,16,19,0,8,30,1,20,8,3,48,
1984         21,1,0,12,0,10,44,34,42,54,11,18,82,0,2,1,2,12,1,0,6,2,17,2,12,7,0,7,17,4,2,6,24,23,8,23,39,2,16,23,1,0,5,1,2,15,14,5,6,2,11,0,8,6,2,2,2,14,
1985         20,4,15,3,4,11,10,10,2,5,2,1,30,2,1,0,0,22,5,5,0,3,1,5,4,1,0,0,2,2,21,1,5,1,2,16,2,1,3,4,0,8,4,0,0,5,14,11,2,16,1,13,1,7,0,22,15,3,1,22,7,14,
1986         22,19,11,24,18,46,10,20,64,45,3,2,0,4,5,0,1,4,25,1,0,0,2,10,0,0,0,1,0,1,2,0,0,9,1,2,0,0,0,2,5,2,1,1,5,5,8,1,1,1,5,1,4,9,1,3,0,1,0,1,1,2,0,0,
1987         2,0,1,8,22,8,1,0,0,0,0,4,2,1,0,9,8,5,0,9,1,30,24,2,6,4,39,0,14,5,16,6,26,179,0,2,1,1,0,0,0,5,2,9,6,0,2,5,16,7,5,1,1,0,2,4,4,7,15,13,14,0,0,
1988         3,0,1,0,0,0,2,1,6,4,5,1,4,9,0,3,1,8,0,0,10,5,0,43,0,2,6,8,4,0,2,0,0,9,6,0,9,3,1,6,20,14,6,1,4,0,7,2,3,0,2,0,5,0,3,1,0,3,9,7,0,3,4,0,4,9,1,6,0,
1989         9,0,0,2,3,10,9,28,3,6,2,4,1,2,32,4,1,18,2,0,3,1,5,30,10,0,2,2,2,0,7,9,8,11,10,11,7,2,13,7,5,10,0,3,40,2,0,1,6,12,0,4,5,1,5,11,11,21,4,8,3,7,
1990         8,8,33,5,23,0,0,19,8,8,2,3,0,6,1,1,1,5,1,27,4,2,5,0,3,5,6,3,1,0,3,1,12,5,3,3,2,0,7,7,2,1,0,4,0,1,1,2,0,10,10,6,2,5,9,7,5,15,15,21,6,11,5,20,
1991         4,3,5,5,2,5,0,2,1,0,1,7,28,0,9,0,5,12,5,5,18,30,0,12,3,3,21,16,25,32,9,3,14,11,24,5,66,9,1,2,0,5,9,1,5,1,8,0,8,3,3,0,1,15,1,4,8,1,2,7,0,7,2,
1992         8,3,7,5,3,7,10,2,1,0,0,2,25,0,6,4,0,10,0,4,2,4,1,12,5,38,4,0,4,1,10,5,9,4,0,14,4,2,5,18,20,21,1,3,0,5,0,7,0,3,7,1,3,1,1,8,1,0,0,0,3,2,5,2,11,
1993         6,0,13,1,3,9,1,12,0,16,6,2,1,0,2,1,12,6,13,11,2,0,28,1,7,8,14,13,8,13,0,2,0,5,4,8,10,2,37,42,19,6,6,7,4,14,11,18,14,80,7,6,0,4,72,12,36,27,
1994         7,7,0,14,17,19,164,27,0,5,10,7,3,13,6,14,0,2,2,5,3,0,6,13,0,0,10,29,0,4,0,3,13,0,3,1,6,51,1,5,28,2,0,8,0,20,2,4,0,25,2,10,13,10,0,16,4,0,1,0,
1995         2,1,7,0,1,8,11,0,0,1,2,7,2,23,11,6,6,4,16,2,2,2,0,22,9,3,3,5,2,0,15,16,21,2,9,20,15,15,5,3,9,1,0,0,1,7,7,5,4,2,2,2,38,24,14,0,0,15,5,6,24,14,
1996         5,5,11,0,21,12,0,3,8,4,11,1,8,0,11,27,7,2,4,9,21,59,0,1,39,3,60,62,3,0,12,11,0,3,30,11,0,13,88,4,15,5,28,13,1,4,48,17,17,4,28,32,46,0,16,0,
1997         18,11,1,8,6,38,11,2,6,11,38,2,0,45,3,11,2,7,8,4,30,14,17,2,1,1,65,18,12,16,4,2,45,123,12,56,33,1,4,3,4,7,0,0,0,3,2,0,16,4,2,4,2,0,7,4,5,2,26,
1998         2,25,6,11,6,1,16,2,6,17,77,15,3,35,0,1,0,5,1,0,38,16,6,3,12,3,3,3,0,9,3,1,3,5,2,9,0,18,0,25,1,3,32,1,72,46,6,2,7,1,3,14,17,0,28,1,40,13,0,20,
1999         15,40,6,38,24,12,43,1,1,9,0,12,6,0,6,2,4,19,3,7,1,48,0,9,5,0,5,6,9,6,10,15,2,11,19,3,9,2,0,1,10,1,27,8,1,3,6,1,14,0,26,0,27,16,3,4,9,6,2,23,
2000         9,10,5,25,2,1,6,1,1,48,15,9,15,14,3,4,26,60,29,13,37,21,1,6,4,0,2,11,22,23,16,16,2,2,1,3,0,5,1,6,4,0,0,4,0,0,8,3,0,2,5,0,7,1,7,3,13,2,4,10,
2001         3,0,2,31,0,18,3,0,12,10,4,1,0,7,5,7,0,5,4,12,2,22,10,4,2,15,2,8,9,0,23,2,197,51,3,1,1,4,13,4,3,21,4,19,3,10,5,40,0,4,1,1,10,4,1,27,34,7,21,
2002         2,17,2,9,6,4,2,3,0,4,2,7,8,2,5,1,15,21,3,4,4,2,2,17,22,1,5,22,4,26,7,0,32,1,11,42,15,4,1,2,5,0,19,3,1,8,6,0,10,1,9,2,13,30,8,2,24,17,19,1,4,
2003         4,25,13,0,10,16,11,39,18,8,5,30,82,1,6,8,18,77,11,13,20,75,11,112,78,33,3,0,0,60,17,84,9,1,1,12,30,10,49,5,32,158,178,5,5,6,3,3,1,3,1,4,7,6,
2004         19,31,21,0,2,9,5,6,27,4,9,8,1,76,18,12,1,4,0,3,3,6,3,12,2,8,30,16,2,25,1,5,5,4,3,0,6,10,2,3,1,0,5,1,19,3,0,8,1,5,2,6,0,0,0,19,1,2,0,5,1,2,5,
2005         1,3,7,0,4,12,7,3,10,22,0,9,5,1,0,2,20,1,1,3,23,30,3,9,9,1,4,191,14,3,15,6,8,50,0,1,0,0,4,0,0,1,0,2,4,2,0,2,3,0,2,0,2,2,8,7,0,1,1,1,3,3,17,11,
2006         91,1,9,3,2,13,4,24,15,41,3,13,3,1,20,4,125,29,30,1,0,4,12,2,21,4,5,5,19,11,0,13,11,86,2,18,0,7,1,8,8,2,2,22,1,2,6,5,2,0,1,2,8,0,2,0,5,2,1,0,
2007         2,10,2,0,5,9,2,1,2,0,1,0,4,0,0,10,2,5,3,0,6,1,0,1,4,4,33,3,13,17,3,18,6,4,7,1,5,78,0,4,1,13,7,1,8,1,0,35,27,15,3,0,0,0,1,11,5,41,38,15,22,6,
2008         14,14,2,1,11,6,20,63,5,8,27,7,11,2,2,40,58,23,50,54,56,293,8,8,1,5,1,14,0,1,12,37,89,8,8,8,2,10,6,0,0,0,4,5,2,1,0,1,1,2,7,0,3,3,0,4,6,0,3,2,
2009         19,3,8,0,0,0,4,4,16,0,4,1,5,1,3,0,3,4,6,2,17,10,10,31,6,4,3,6,10,126,7,3,2,2,0,9,0,0,5,20,13,0,15,0,6,0,2,5,8,64,50,3,2,12,2,9,0,0,11,8,20,
2010         109,2,18,23,0,0,9,61,3,0,28,41,77,27,19,17,81,5,2,14,5,83,57,252,14,154,263,14,20,8,13,6,57,39,38,
2011     };
2012     static ImWchar base_ranges[] =
2013     {
2014         0x0020, 0x00FF, // Basic Latin + Latin Supplement
2015         0x3000, 0x30FF, // Punctuations, Hiragana, Katakana
2016         0x31F0, 0x31FF, // Katakana Phonetic Extensions
2017         0xFF00, 0xFFEF, // Half-width characters
2018     };
2019     static bool full_ranges_unpacked = false;
2020     static ImWchar full_ranges[IM_ARRAYSIZE(base_ranges) + IM_ARRAYSIZE(offsets_from_0x4E00)*2 + 1];
2021     if (!full_ranges_unpacked)
2022     {
2023         // Unpack
2024         int codepoint = 0x4e00;
2025         memcpy(full_ranges, base_ranges, sizeof(base_ranges));
2026         ImWchar* dst = full_ranges + IM_ARRAYSIZE(base_ranges);;
2027         for (int n = 0; n < IM_ARRAYSIZE(offsets_from_0x4E00); n++, dst += 2)
2028             dst[0] = dst[1] = (ImWchar)(codepoint += (offsets_from_0x4E00[n] + 1));
2029         dst[0] = 0;
2030         full_ranges_unpacked = true;
2031     }
2032     return &full_ranges[0];
2033 }
2034
2035 const ImWchar*  ImFontAtlas::GetGlyphRangesCyrillic()
2036 {
2037     static const ImWchar ranges[] =
2038     {
2039         0x0020, 0x00FF, // Basic Latin + Latin Supplement
2040         0x0400, 0x052F, // Cyrillic + Cyrillic Supplement
2041         0x2DE0, 0x2DFF, // Cyrillic Extended-A
2042         0xA640, 0xA69F, // Cyrillic Extended-B
2043         0,
2044     };
2045     return &ranges[0];
2046 }
2047
2048 const ImWchar*  ImFontAtlas::GetGlyphRangesThai()
2049 {
2050     static const ImWchar ranges[] =
2051     {
2052         0x0020, 0x00FF, // Basic Latin
2053         0x2010, 0x205E, // Punctuations
2054         0x0E00, 0x0E7F, // Thai
2055         0,
2056     };
2057     return &ranges[0];
2058 }
2059
2060 //-----------------------------------------------------------------------------
2061 // ImFontAtlas::GlyphRangesBuilder
2062 //-----------------------------------------------------------------------------
2063
2064 void ImFontAtlas::GlyphRangesBuilder::AddText(const char* text, const char* text_end)
2065 {
2066     while (text_end ? (text < text_end) : *text)
2067     {
2068         unsigned int c = 0;
2069         int c_len = ImTextCharFromUtf8(&c, text, text_end);
2070         text += c_len;
2071         if (c_len == 0)
2072             break;
2073         if (c < 0x10000)
2074             AddChar((ImWchar)c);
2075     }
2076 }
2077
2078 void ImFontAtlas::GlyphRangesBuilder::AddRanges(const ImWchar* ranges)
2079 {
2080     for (; ranges[0]; ranges += 2)
2081         for (ImWchar c = ranges[0]; c <= ranges[1]; c++)
2082             AddChar(c);
2083 }
2084
2085 void ImFontAtlas::GlyphRangesBuilder::BuildRanges(ImVector<ImWchar>* out_ranges)
2086 {
2087     for (int n = 0; n < 0x10000; n++)
2088         if (GetBit(n))
2089         {
2090             out_ranges->push_back((ImWchar)n);
2091             while (n < 0x10000 && GetBit(n + 1))
2092                 n++;
2093             out_ranges->push_back((ImWchar)n);
2094         }
2095     out_ranges->push_back(0);
2096 }
2097
2098 //-----------------------------------------------------------------------------
2099 // ImFont
2100 //-----------------------------------------------------------------------------
2101
2102 ImFont::ImFont()
2103 {
2104     Scale = 1.0f;
2105     FallbackChar = (ImWchar)'?';
2106     DisplayOffset = ImVec2(0.0f, 1.0f);
2107     ClearOutputData();
2108 }
2109
2110 ImFont::~ImFont()
2111 {
2112     // Invalidate active font so that the user gets a clear crash instead of a dangling pointer.
2113     // If you want to delete fonts you need to do it between Render() and NewFrame().
2114     // FIXME-CLEANUP
2115     /*
2116     ImGuiContext& g = *GImGui;
2117     if (g.Font == this)
2118         g.Font = NULL;
2119     */
2120     ClearOutputData();
2121 }
2122
2123 void    ImFont::ClearOutputData()
2124 {
2125     FontSize = 0.0f;
2126     Glyphs.clear();
2127     IndexAdvanceX.clear();
2128     IndexLookup.clear();
2129     FallbackGlyph = NULL;
2130     FallbackAdvanceX = 0.0f;
2131     ConfigDataCount = 0;
2132     ConfigData = NULL;
2133     ContainerAtlas = NULL;
2134     Ascent = Descent = 0.0f;
2135     MetricsTotalSurface = 0;
2136 }
2137
2138 void ImFont::BuildLookupTable()
2139 {
2140     int max_codepoint = 0;
2141     for (int i = 0; i != Glyphs.Size; i++)
2142         max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
2143
2144     IM_ASSERT(Glyphs.Size < 0xFFFF); // -1 is reserved
2145     IndexAdvanceX.clear();
2146     IndexLookup.clear();
2147     GrowIndex(max_codepoint + 1);
2148     for (int i = 0; i < Glyphs.Size; i++)
2149     {
2150         int codepoint = (int)Glyphs[i].Codepoint;
2151         IndexAdvanceX[codepoint] = Glyphs[i].AdvanceX;
2152         IndexLookup[codepoint] = (unsigned short)i;
2153     }
2154
2155     // Create a glyph to handle TAB
2156     // FIXME: Needs proper TAB handling but it needs to be contextualized (or we could arbitrary say that each string starts at "column 0" ?)
2157     if (FindGlyph((unsigned short)' '))
2158     {
2159         if (Glyphs.back().Codepoint != '\t')   // So we can call this function multiple times
2160             Glyphs.resize(Glyphs.Size + 1);
2161         ImFontGlyph& tab_glyph = Glyphs.back();
2162         tab_glyph = *FindGlyph((unsigned short)' ');
2163         tab_glyph.Codepoint = '\t';
2164         tab_glyph.AdvanceX *= 4;
2165         IndexAdvanceX[(int)tab_glyph.Codepoint] = (float)tab_glyph.AdvanceX;
2166         IndexLookup[(int)tab_glyph.Codepoint] = (unsigned short)(Glyphs.Size-1);
2167     }
2168
2169     FallbackGlyph = NULL;
2170     FallbackGlyph = FindGlyph(FallbackChar);
2171     FallbackAdvanceX = FallbackGlyph ? FallbackGlyph->AdvanceX : 0.0f;
2172     for (int i = 0; i < max_codepoint + 1; i++)
2173         if (IndexAdvanceX[i] < 0.0f)
2174             IndexAdvanceX[i] = FallbackAdvanceX;
2175 }
2176
2177 void ImFont::SetFallbackChar(ImWchar c)
2178 {
2179     FallbackChar = c;
2180     BuildLookupTable();
2181 }
2182
2183 void ImFont::GrowIndex(int new_size)
2184 {
2185     IM_ASSERT(IndexAdvanceX.Size == IndexLookup.Size);
2186     if (new_size <= IndexLookup.Size)
2187         return;
2188     IndexAdvanceX.resize(new_size, -1.0f);
2189     IndexLookup.resize(new_size, (unsigned short)-1);
2190 }
2191
2192 void ImFont::AddGlyph(ImWchar codepoint, float x0, float y0, float x1, float y1, float u0, float v0, float u1, float v1, float advance_x)
2193 {
2194     Glyphs.resize(Glyphs.Size + 1);
2195     ImFontGlyph& glyph = Glyphs.back();
2196     glyph.Codepoint = (ImWchar)codepoint;
2197     glyph.X0 = x0; 
2198     glyph.Y0 = y0; 
2199     glyph.X1 = x1; 
2200     glyph.Y1 = y1;
2201     glyph.U0 = u0; 
2202     glyph.V0 = v0; 
2203     glyph.U1 = u1; 
2204     glyph.V1 = v1;
2205     glyph.AdvanceX = advance_x + ConfigData->GlyphExtraSpacing.x;  // Bake spacing into AdvanceX
2206
2207     if (ConfigData->PixelSnapH)
2208         glyph.AdvanceX = (float)(int)(glyph.AdvanceX + 0.5f);
2209     
2210     // Compute rough surface usage metrics (+1 to account for average padding, +0.99 to round)
2211     MetricsTotalSurface += (int)((glyph.U1 - glyph.U0) * ContainerAtlas->TexWidth + 1.99f) * (int)((glyph.V1 - glyph.V0) * ContainerAtlas->TexHeight + 1.99f);
2212 }
2213
2214 void ImFont::AddRemapChar(ImWchar dst, ImWchar src, bool overwrite_dst)
2215 {
2216     IM_ASSERT(IndexLookup.Size > 0);    // Currently this can only be called AFTER the font has been built, aka after calling ImFontAtlas::GetTexDataAs*() function.
2217     int index_size = IndexLookup.Size;
2218
2219     if (dst < index_size && IndexLookup.Data[dst] == (unsigned short)-1 && !overwrite_dst) // 'dst' already exists
2220         return;
2221     if (src >= index_size && dst >= index_size) // both 'dst' and 'src' don't exist -> no-op
2222         return;
2223
2224     GrowIndex(dst + 1);
2225     IndexLookup[dst] = (src < index_size) ? IndexLookup.Data[src] : (unsigned short)-1;
2226     IndexAdvanceX[dst] = (src < index_size) ? IndexAdvanceX.Data[src] : 1.0f;
2227 }
2228
2229 const ImFontGlyph* ImFont::FindGlyph(ImWchar c) const
2230 {
2231     if (c < IndexLookup.Size)
2232     {
2233         const unsigned short i = IndexLookup[c];
2234         if (i != (unsigned short)-1)
2235             return &Glyphs.Data[i];
2236     }
2237     return FallbackGlyph;
2238 }
2239
2240 const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const
2241 {
2242     // Simple word-wrapping for English, not full-featured. Please submit failing cases!
2243     // FIXME: Much possible improvements (don't cut things like "word !", "word!!!" but cut within "word,,,,", more sensible support for punctuations, support for Unicode punctuations, etc.)
2244
2245     // For references, possible wrap point marked with ^
2246     //  "aaa bbb, ccc,ddd. eee   fff. ggg!"
2247     //      ^    ^    ^   ^   ^__    ^    ^
2248
2249     // List of hardcoded separators: .,;!?'"
2250
2251     // Skip extra blanks after a line returns (that includes not counting them in width computation)
2252     // e.g. "Hello    world" --> "Hello" "World"
2253
2254     // Cut words that cannot possibly fit within one line.
2255     // e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"
2256
2257     float line_width = 0.0f;
2258     float word_width = 0.0f;
2259     float blank_width = 0.0f;
2260     wrap_width /= scale; // We work with unscaled widths to avoid scaling every characters
2261
2262     const char* word_end = text;
2263     const char* prev_word_end = NULL;
2264     bool inside_word = true;
2265
2266     const char* s = text;
2267     while (s < text_end)
2268     {
2269         unsigned int c = (unsigned int)*s;
2270         const char* next_s;
2271         if (c < 0x80)
2272             next_s = s + 1;
2273         else
2274             next_s = s + ImTextCharFromUtf8(&c, s, text_end);
2275         if (c == 0)
2276             break;
2277
2278         if (c < 32)
2279         {
2280             if (c == '\n')
2281             {
2282                 line_width = word_width = blank_width = 0.0f;
2283                 inside_word = true;
2284                 s = next_s;
2285                 continue;
2286             }
2287             if (c == '\r')
2288             {
2289                 s = next_s;
2290                 continue;
2291             }
2292         }
2293
2294         const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX);
2295         if (ImCharIsSpace(c))
2296         {
2297             if (inside_word)
2298             {
2299                 line_width += blank_width;
2300                 blank_width = 0.0f;
2301                 word_end = s;
2302             }
2303             blank_width += char_width;
2304             inside_word = false;
2305         }
2306         else
2307         {
2308             word_width += char_width;
2309             if (inside_word)
2310             {
2311                 word_end = next_s;
2312             }
2313             else
2314             {
2315                 prev_word_end = word_end;
2316                 line_width += word_width + blank_width;
2317                 word_width = blank_width = 0.0f;
2318             }
2319
2320             // Allow wrapping after punctuation.
2321             inside_word = !(c == '.' || c == ',' || c == ';' || c == '!' || c == '?' || c == '\"');
2322         }
2323
2324         // We ignore blank width at the end of the line (they can be skipped)
2325         if (line_width + word_width >= wrap_width)
2326         {
2327             // Words that cannot possibly fit within an entire line will be cut anywhere.
2328             if (word_width < wrap_width)
2329                 s = prev_word_end ? prev_word_end : word_end;
2330             break;
2331         }
2332
2333         s = next_s;
2334     }
2335
2336     return s;
2337 }
2338
2339 ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end, const char** remaining) const
2340 {
2341     if (!text_end)
2342         text_end = text_begin + strlen(text_begin); // FIXME-OPT: Need to avoid this.
2343
2344     const float line_height = size;
2345     const float scale = size / FontSize;
2346
2347     ImVec2 text_size = ImVec2(0,0);
2348     float line_width = 0.0f;
2349
2350     const bool word_wrap_enabled = (wrap_width > 0.0f);
2351     const char* word_wrap_eol = NULL;
2352
2353     const char* s = text_begin;
2354     while (s < text_end)
2355     {
2356         if (word_wrap_enabled)
2357         {
2358             // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
2359             if (!word_wrap_eol)
2360             {
2361                 word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - line_width);
2362                 if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
2363                     word_wrap_eol++;    // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
2364             }
2365
2366             if (s >= word_wrap_eol)
2367             {
2368                 if (text_size.x < line_width)
2369                     text_size.x = line_width;
2370                 text_size.y += line_height;
2371                 line_width = 0.0f;
2372                 word_wrap_eol = NULL;
2373
2374                 // Wrapping skips upcoming blanks
2375                 while (s < text_end)
2376                 {
2377                     const char c = *s;
2378                     if (ImCharIsSpace(c)) { s++; } else if (c == '\n') { s++; break; } else { break; }
2379                 }
2380                 continue;
2381             }
2382         }
2383
2384         // Decode and advance source
2385         const char* prev_s = s;
2386         unsigned int c = (unsigned int)*s;
2387         if (c < 0x80)
2388         {
2389             s += 1;
2390         }
2391         else
2392         {
2393             s += ImTextCharFromUtf8(&c, s, text_end);
2394             if (c == 0) // Malformed UTF-8?
2395                 break;
2396         }
2397
2398         if (c < 32)
2399         {
2400             if (c == '\n')
2401             {
2402                 text_size.x = ImMax(text_size.x, line_width);
2403                 text_size.y += line_height;
2404                 line_width = 0.0f;
2405                 continue;
2406             }
2407             if (c == '\r')
2408                 continue;
2409         }
2410
2411         const float char_width = ((int)c < IndexAdvanceX.Size ? IndexAdvanceX[(int)c] : FallbackAdvanceX) * scale;
2412         if (line_width + char_width >= max_width)
2413         {
2414             s = prev_s;
2415             break;
2416         }
2417
2418         line_width += char_width;
2419     }
2420
2421     if (text_size.x < line_width)
2422         text_size.x = line_width;
2423
2424     if (line_width > 0 || text_size.y == 0.0f)
2425         text_size.y += line_height;
2426
2427     if (remaining)
2428         *remaining = s;
2429
2430     return text_size;
2431 }
2432
2433 void ImFont::RenderChar(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, unsigned short c) const
2434 {
2435     if (c == ' ' || c == '\t' || c == '\n' || c == '\r') // Match behavior of RenderText(), those 4 codepoints are hard-coded.
2436         return;
2437     if (const ImFontGlyph* glyph = FindGlyph(c))
2438     {
2439         float scale = (size >= 0.0f) ? (size / FontSize) : 1.0f;
2440         pos.x = (float)(int)pos.x + DisplayOffset.x;
2441         pos.y = (float)(int)pos.y + DisplayOffset.y;
2442         draw_list->PrimReserve(6, 4);
2443         draw_list->PrimRectUV(ImVec2(pos.x + glyph->X0 * scale, pos.y + glyph->Y0 * scale), ImVec2(pos.x + glyph->X1 * scale, pos.y + glyph->Y1 * scale), ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V1), col);
2444     }
2445 }
2446
2447 void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, float wrap_width, bool cpu_fine_clip) const
2448 {
2449     if (!text_end)
2450         text_end = text_begin + strlen(text_begin); // ImGui functions generally already provides a valid text_end, so this is merely to handle direct calls.
2451
2452     // Align to be pixel perfect
2453     pos.x = (float)(int)pos.x + DisplayOffset.x;
2454     pos.y = (float)(int)pos.y + DisplayOffset.y;
2455     float x = pos.x;
2456     float y = pos.y;
2457     if (y > clip_rect.w)
2458         return;
2459
2460     const float scale = size / FontSize;
2461     const float line_height = FontSize * scale;
2462     const bool word_wrap_enabled = (wrap_width > 0.0f);
2463     const char* word_wrap_eol = NULL;
2464
2465     // Skip non-visible lines
2466     const char* s = text_begin;
2467     if (!word_wrap_enabled && y + line_height < clip_rect.y)
2468         while (s < text_end && *s != '\n')  // Fast-forward to next line
2469             s++;
2470
2471     // Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)
2472     const int vtx_count_max = (int)(text_end - s) * 4;
2473     const int idx_count_max = (int)(text_end - s) * 6;
2474     const int idx_expected_size = draw_list->IdxBuffer.Size + idx_count_max;
2475     draw_list->PrimReserve(idx_count_max, vtx_count_max);
2476
2477     ImDrawVert* vtx_write = draw_list->_VtxWritePtr;
2478     ImDrawIdx* idx_write = draw_list->_IdxWritePtr;
2479     unsigned int vtx_current_idx = draw_list->_VtxCurrentIdx;
2480
2481     while (s < text_end)
2482     {
2483         if (word_wrap_enabled)
2484         {
2485             // Calculate how far we can render. Requires two passes on the string data but keeps the code simple and not intrusive for what's essentially an uncommon feature.
2486             if (!word_wrap_eol)
2487             {
2488                 word_wrap_eol = CalcWordWrapPositionA(scale, s, text_end, wrap_width - (x - pos.x));
2489                 if (word_wrap_eol == s) // Wrap_width is too small to fit anything. Force displaying 1 character to minimize the height discontinuity.
2490                     word_wrap_eol++;    // +1 may not be a character start point in UTF-8 but it's ok because we use s >= word_wrap_eol below
2491             }
2492
2493             if (s >= word_wrap_eol)
2494             {
2495                 x = pos.x;
2496                 y += line_height;
2497                 word_wrap_eol = NULL;
2498
2499                 // Wrapping skips upcoming blanks
2500                 while (s < text_end)
2501                 {
2502                     const char c = *s;
2503                     if (ImCharIsSpace(c)) { s++; } else if (c == '\n') { s++; break; } else { break; }
2504                 }
2505                 continue;
2506             }
2507         }
2508
2509         // Decode and advance source
2510         unsigned int c = (unsigned int)*s;
2511         if (c < 0x80)
2512         {
2513             s += 1;
2514         }
2515         else
2516         {
2517             s += ImTextCharFromUtf8(&c, s, text_end);
2518             if (c == 0) // Malformed UTF-8?
2519                 break;
2520         }
2521
2522         if (c < 32)
2523         {
2524             if (c == '\n')
2525             {
2526                 x = pos.x;
2527                 y += line_height;
2528
2529                 if (y > clip_rect.w)
2530                     break;
2531                 if (!word_wrap_enabled && y + line_height < clip_rect.y)
2532                     while (s < text_end && *s != '\n')  // Fast-forward to next line
2533                         s++;
2534                 continue;
2535             }
2536             if (c == '\r')
2537                 continue;
2538         }
2539
2540         float char_width = 0.0f;
2541         if (const ImFontGlyph* glyph = FindGlyph((unsigned short)c))
2542         {
2543             char_width = glyph->AdvanceX * scale;
2544
2545             // Arbitrarily assume that both space and tabs are empty glyphs as an optimization
2546             if (c != ' ' && c != '\t')
2547             {
2548                 // We don't do a second finer clipping test on the Y axis as we've already skipped anything before clip_rect.y and exit once we pass clip_rect.w
2549                 float x1 = x + glyph->X0 * scale;
2550                 float x2 = x + glyph->X1 * scale;
2551                 float y1 = y + glyph->Y0 * scale;
2552                 float y2 = y + glyph->Y1 * scale;
2553                 if (x1 <= clip_rect.z && x2 >= clip_rect.x)
2554                 {
2555                     // Render a character
2556                     float u1 = glyph->U0;
2557                     float v1 = glyph->V0;
2558                     float u2 = glyph->U1;
2559                     float v2 = glyph->V1;
2560
2561                     // CPU side clipping used to fit text in their frame when the frame is too small. Only does clipping for axis aligned quads.
2562                     if (cpu_fine_clip)
2563                     {
2564                         if (x1 < clip_rect.x)
2565                         {
2566                             u1 = u1 + (1.0f - (x2 - clip_rect.x) / (x2 - x1)) * (u2 - u1);
2567                             x1 = clip_rect.x;
2568                         }
2569                         if (y1 < clip_rect.y)
2570                         {
2571                             v1 = v1 + (1.0f - (y2 - clip_rect.y) / (y2 - y1)) * (v2 - v1);
2572                             y1 = clip_rect.y;
2573                         }
2574                         if (x2 > clip_rect.z)
2575                         {
2576                             u2 = u1 + ((clip_rect.z - x1) / (x2 - x1)) * (u2 - u1);
2577                             x2 = clip_rect.z;
2578                         }
2579                         if (y2 > clip_rect.w)
2580                         {
2581                             v2 = v1 + ((clip_rect.w - y1) / (y2 - y1)) * (v2 - v1);
2582                             y2 = clip_rect.w;
2583                         }
2584                         if (y1 >= y2)
2585                         {
2586                             x += char_width;
2587                             continue;
2588                         }
2589                     }
2590
2591                     // We are NOT calling PrimRectUV() here because non-inlined causes too much overhead in a debug builds. Inlined here:
2592                     {
2593                         idx_write[0] = (ImDrawIdx)(vtx_current_idx); idx_write[1] = (ImDrawIdx)(vtx_current_idx+1); idx_write[2] = (ImDrawIdx)(vtx_current_idx+2);
2594                         idx_write[3] = (ImDrawIdx)(vtx_current_idx); idx_write[4] = (ImDrawIdx)(vtx_current_idx+2); idx_write[5] = (ImDrawIdx)(vtx_current_idx+3);
2595                         vtx_write[0].pos.x = x1; vtx_write[0].pos.y = y1; vtx_write[0].col = col; vtx_write[0].uv.x = u1; vtx_write[0].uv.y = v1;
2596                         vtx_write[1].pos.x = x2; vtx_write[1].pos.y = y1; vtx_write[1].col = col; vtx_write[1].uv.x = u2; vtx_write[1].uv.y = v1;
2597                         vtx_write[2].pos.x = x2; vtx_write[2].pos.y = y2; vtx_write[2].col = col; vtx_write[2].uv.x = u2; vtx_write[2].uv.y = v2;
2598                         vtx_write[3].pos.x = x1; vtx_write[3].pos.y = y2; vtx_write[3].col = col; vtx_write[3].uv.x = u1; vtx_write[3].uv.y = v2;
2599                         vtx_write += 4;
2600                         vtx_current_idx += 4;
2601                         idx_write += 6;
2602                     }
2603                 }
2604             }
2605         }
2606
2607         x += char_width;
2608     }
2609
2610     // Give back unused vertices
2611     draw_list->VtxBuffer.resize((int)(vtx_write - draw_list->VtxBuffer.Data));
2612     draw_list->IdxBuffer.resize((int)(idx_write - draw_list->IdxBuffer.Data));
2613     draw_list->CmdBuffer[draw_list->CmdBuffer.Size-1].ElemCount -= (idx_expected_size - draw_list->IdxBuffer.Size);
2614     draw_list->_VtxWritePtr = vtx_write;
2615     draw_list->_IdxWritePtr = idx_write;
2616     draw_list->_VtxCurrentIdx = (unsigned int)draw_list->VtxBuffer.Size;
2617 }
2618
2619 //-----------------------------------------------------------------------------
2620 // Internals Drawing Helpers
2621 //-----------------------------------------------------------------------------
2622
2623 static inline float ImAcos01(float x)
2624 {
2625     if (x <= 0.0f) return IM_PI * 0.5f;
2626     if (x >= 1.0f) return 0.0f;
2627     return acosf(x);
2628     //return (-0.69813170079773212f * x * x - 0.87266462599716477f) * x + 1.5707963267948966f; // Cheap approximation, may be enough for what we do.
2629 }
2630
2631 // FIXME: Cleanup and move code to ImDrawList.
2632 void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, ImU32 col, float x_start_norm, float x_end_norm, float rounding)
2633 {
2634     if (x_end_norm == x_start_norm)
2635         return;
2636     if (x_start_norm > x_end_norm)
2637         ImSwap(x_start_norm, x_end_norm);
2638
2639     ImVec2 p0 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_start_norm), rect.Min.y);
2640     ImVec2 p1 = ImVec2(ImLerp(rect.Min.x, rect.Max.x, x_end_norm), rect.Max.y);
2641     if (rounding == 0.0f)
2642     {
2643         draw_list->AddRectFilled(p0, p1, col, 0.0f);
2644         return;
2645     }
2646
2647     rounding = ImClamp(ImMin((rect.Max.x - rect.Min.x) * 0.5f, (rect.Max.y - rect.Min.y) * 0.5f) - 1.0f, 0.0f, rounding);
2648     const float inv_rounding = 1.0f / rounding;
2649     const float arc0_b = ImAcos01(1.0f - (p0.x - rect.Min.x) * inv_rounding);
2650     const float arc0_e = ImAcos01(1.0f - (p1.x - rect.Min.x) * inv_rounding);
2651     const float x0 = ImMax(p0.x, rect.Min.x + rounding);
2652     if (arc0_b == arc0_e)
2653     {
2654         draw_list->PathLineTo(ImVec2(x0, p1.y));
2655         draw_list->PathLineTo(ImVec2(x0, p0.y));
2656     }
2657     else if (arc0_b == 0.0f && arc0_e == IM_PI*0.5f)
2658     {
2659         draw_list->PathArcToFast(ImVec2(x0, p1.y - rounding), rounding, 3, 6); // BL
2660         draw_list->PathArcToFast(ImVec2(x0, p0.y + rounding), rounding, 6, 9); // TR
2661     }
2662     else
2663     {
2664         draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b, 3); // BL
2665         draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e, 3); // TR
2666     }
2667     if (p1.x > rect.Min.x + rounding)
2668     {
2669         const float arc1_b = ImAcos01(1.0f - (rect.Max.x - p1.x) * inv_rounding);
2670         const float arc1_e = ImAcos01(1.0f - (rect.Max.x - p0.x) * inv_rounding);
2671         const float x1 = ImMin(p1.x, rect.Max.x - rounding);
2672         if (arc1_b == arc1_e)
2673         {
2674             draw_list->PathLineTo(ImVec2(x1, p0.y));
2675             draw_list->PathLineTo(ImVec2(x1, p1.y));
2676         }
2677         else if (arc1_b == 0.0f && arc1_e == IM_PI*0.5f)
2678         {
2679             draw_list->PathArcToFast(ImVec2(x1, p0.y + rounding), rounding, 9, 12); // TR
2680             draw_list->PathArcToFast(ImVec2(x1, p1.y - rounding), rounding, 0, 3);  // BR
2681         }
2682         else
2683         {
2684             draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b, 3); // TR
2685             draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e, 3); // BR
2686         }
2687     }
2688     draw_list->PathFillConvex(col);
2689 }
2690
2691 //-----------------------------------------------------------------------------
2692 // DEFAULT FONT DATA
2693 //-----------------------------------------------------------------------------
2694 // Compressed with stb_compress() then converted to a C array.
2695 // Use the program in extra_fonts/binary_to_compressed_c.cpp to create the array from a TTF file.
2696 // Decompression from stb.h (public domain) by Sean Barrett https://github.com/nothings/stb/blob/master/stb.h
2697 //-----------------------------------------------------------------------------
2698
2699 static unsigned int stb_decompress_length(unsigned char *input)
2700 {
2701     return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];
2702 }
2703
2704 static unsigned char *stb__barrier, *stb__barrier2, *stb__barrier3, *stb__barrier4;
2705 static unsigned char *stb__dout;
2706 static void stb__match(unsigned char *data, unsigned int length)
2707 {
2708     // INVERSE of memmove... write each byte before copying the next...
2709     IM_ASSERT (stb__dout + length <= stb__barrier);
2710     if (stb__dout + length > stb__barrier) { stb__dout += length; return; }
2711     if (data < stb__barrier4) { stb__dout = stb__barrier+1; return; }
2712     while (length--) *stb__dout++ = *data++;
2713 }
2714
2715 static void stb__lit(unsigned char *data, unsigned int length)
2716 {
2717     IM_ASSERT (stb__dout + length <= stb__barrier);
2718     if (stb__dout + length > stb__barrier) { stb__dout += length; return; }
2719     if (data < stb__barrier2) { stb__dout = stb__barrier+1; return; }
2720     memcpy(stb__dout, data, length);
2721     stb__dout += length;
2722 }
2723
2724 #define stb__in2(x)   ((i[x] << 8) + i[(x)+1])
2725 #define stb__in3(x)   ((i[x] << 16) + stb__in2((x)+1))
2726 #define stb__in4(x)   ((i[x] << 24) + stb__in3((x)+1))
2727
2728 static unsigned char *stb_decompress_token(unsigned char *i)
2729 {
2730     if (*i >= 0x20) { // use fewer if's for cases that expand small
2731         if (*i >= 0x80)       stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2;
2732         else if (*i >= 0x40)  stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3;
2733         else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
2734     } else { // more ifs for cases that expand large, since overhead is amortized
2735         if (*i >= 0x18)       stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4;
2736         else if (*i >= 0x10)  stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5;
2737         else if (*i >= 0x08)  stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);
2738         else if (*i == 0x07)  stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);
2739         else if (*i == 0x06)  stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5;
2740         else if (*i == 0x04)  stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6;
2741     }
2742     return i;
2743 }
2744
2745 static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)
2746 {
2747     const unsigned long ADLER_MOD = 65521;
2748     unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
2749     unsigned long blocklen, i;
2750
2751     blocklen = buflen % 5552;
2752     while (buflen) {
2753         for (i=0; i + 7 < blocklen; i += 8) {
2754             s1 += buffer[0], s2 += s1;
2755             s1 += buffer[1], s2 += s1;
2756             s1 += buffer[2], s2 += s1;
2757             s1 += buffer[3], s2 += s1;
2758             s1 += buffer[4], s2 += s1;
2759             s1 += buffer[5], s2 += s1;
2760             s1 += buffer[6], s2 += s1;
2761             s1 += buffer[7], s2 += s1;
2762
2763             buffer += 8;
2764         }
2765
2766         for (; i < blocklen; ++i)
2767             s1 += *buffer++, s2 += s1;
2768
2769         s1 %= ADLER_MOD, s2 %= ADLER_MOD;
2770         buflen -= blocklen;
2771         blocklen = 5552;
2772     }
2773     return (unsigned int)(s2 << 16) + (unsigned int)s1;
2774 }
2775
2776 static unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length)
2777 {
2778     unsigned int olen;
2779     if (stb__in4(0) != 0x57bC0000) return 0;
2780     if (stb__in4(4) != 0)          return 0; // error! stream is > 4GB
2781     olen = stb_decompress_length(i);
2782     stb__barrier2 = i;
2783     stb__barrier3 = i+length;
2784     stb__barrier = output + olen;
2785     stb__barrier4 = output;
2786     i += 16;
2787
2788     stb__dout = output;
2789     for (;;) {
2790         unsigned char *old_i = i;
2791         i = stb_decompress_token(i);
2792         if (i == old_i) {
2793             if (*i == 0x05 && i[1] == 0xfa) {
2794                 IM_ASSERT(stb__dout == output + olen);
2795                 if (stb__dout != output + olen) return 0;
2796                 if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2))
2797                     return 0;
2798                 return olen;
2799             } else {
2800                 IM_ASSERT(0); /* NOTREACHED */
2801                 return 0;
2802             }
2803         }
2804         IM_ASSERT(stb__dout <= output + olen);
2805         if (stb__dout > output + olen)
2806             return 0;
2807     }
2808 }
2809
2810 //-----------------------------------------------------------------------------
2811 // ProggyClean.ttf
2812 // Copyright (c) 2004, 2005 Tristan Grimmer
2813 // MIT license (see License.txt in http://www.upperbounds.net/download/ProggyClean.ttf.zip)
2814 // Download and more information at http://upperbounds.net
2815 //-----------------------------------------------------------------------------
2816 // File: 'ProggyClean.ttf' (41208 bytes)
2817 // Exported using binary_to_compressed_c.cpp
2818 //-----------------------------------------------------------------------------
2819 static const char proggy_clean_ttf_compressed_data_base85[11980+1] =
2820     "7])#######hV0qs'/###[),##/l:$#Q6>##5[n42>c-TH`->>#/e>11NNV=Bv(*:.F?uu#(gRU.o0XGH`$vhLG1hxt9?W`#,5LsCp#-i>.r$<$6pD>Lb';9Crc6tgXmKVeU2cD4Eo3R/"
2821     "2*>]b(MC;$jPfY.;h^`IWM9<Lh2TlS+f-s$o6Q<BWH`YiU.xfLq$N;$0iR/GX:U(jcW2p/W*q?-qmnUCI;jHSAiFWM.R*kU@C=GH?a9wp8f$e.-4^Qg1)Q-GL(lf(r/7GrRgwV%MS=C#"
2822     "`8ND>Qo#t'X#(v#Y9w0#1D$CIf;W'#pWUPXOuxXuU(H9M(1<q-UE31#^-V'8IRUo7Qf./L>=Ke$$'5F%)]0^#0X@U.a<r:QLtFsLcL6##lOj)#.Y5<-R&KgLwqJfLgN&;Q?gI^#DY2uL"
2823     "i@^rMl9t=cWq6##weg>$FBjVQTSDgEKnIS7EM9>ZY9w0#L;>>#Mx&4Mvt//L[MkA#W@lK.N'[0#7RL_&#w+F%HtG9M#XL`N&.,GM4Pg;-<nLENhvx>-VsM.M0rJfLH2eTM`*oJMHRC`N"
2824     "kfimM2J,W-jXS:)r0wK#@Fge$U>`w'N7G#$#fB#$E^$#:9:hk+eOe--6x)F7*E%?76%^GMHePW-Z5l'&GiF#$956:rS?dA#fiK:)Yr+`&#0j@'DbG&#^$PG.Ll+DNa<XCMKEV*N)LN/N"
2825     "*b=%Q6pia-Xg8I$<MR&,VdJe$<(7G;Ckl'&hF;;$<_=X(b.RS%%)###MPBuuE1V:v&cX&#2m#(&cV]`k9OhLMbn%s$G2,B$BfD3X*sp5#l,$R#]x_X1xKX%b5U*[r5iMfUo9U`N99hG)"
2826     "tm+/Us9pG)XPu`<0s-)WTt(gCRxIg(%6sfh=ktMKn3j)<6<b5Sk_/0(^]AaN#(p/L>&VZ>1i%h1S9u5o@YaaW$e+b<TWFn/Z:Oh(Cx2$lNEoN^e)#CFY@@I;BOQ*sRwZtZxRcU7uW6CX"
2827     "ow0i(?$Q[cjOd[P4d)]>ROPOpxTO7Stwi1::iB1q)C_=dV26J;2,]7op$]uQr@_V7$q^%lQwtuHY]=DX,n3L#0PHDO4f9>dC@O>HBuKPpP*E,N+b3L#lpR/MrTEH.IAQk.a>D[.e;mc."
2828     "x]Ip.PH^'/aqUO/$1WxLoW0[iLA<QT;5HKD+@qQ'NQ(3_PLhE48R.qAPSwQ0/WK?Z,[x?-J;jQTWA0X@KJ(_Y8N-:/M74:/-ZpKrUss?d#dZq]DAbkU*JqkL+nwX@@47`5>w=4h(9.`G"
2829     "CRUxHPeR`5Mjol(dUWxZa(>STrPkrJiWx`5U7F#.g*jrohGg`cg:lSTvEY/EV_7H4Q9[Z%cnv;JQYZ5q.l7Zeas:HOIZOB?G<Nald$qs]@]L<J7bR*>gv:[7MI2k).'2($5FNP&EQ(,)"
2830     "U]W]+fh18.vsai00);D3@4ku5P?DP8aJt+;qUM]=+b'8@;mViBKx0DE[-auGl8:PJ&Dj+M6OC]O^((##]`0i)drT;-7X`=-H3[igUnPG-NZlo.#k@h#=Ork$m>a>$-?Tm$UV(?#P6YY#"
2831     "'/###xe7q.73rI3*pP/$1>s9)W,JrM7SN]'/4C#v$U`0#V.[0>xQsH$fEmPMgY2u7Kh(G%siIfLSoS+MK2eTM$=5,M8p`A.;_R%#u[K#$x4AG8.kK/HSB==-'Ie/QTtG?-.*^N-4B/ZM"
2832     "_3YlQC7(p7q)&](`6_c)$/*JL(L-^(]$wIM`dPtOdGA,U3:w2M-0<q-]L_?^)1vw'.,MRsqVr.L;aN&#/EgJ)PBc[-f>+WomX2u7lqM2iEumMTcsF?-aT=Z-97UEnXglEn1K-bnEO`gu"
2833     "Ft(c%=;Am_Qs@jLooI&NX;]0#j4#F14;gl8-GQpgwhrq8'=l_f-b49'UOqkLu7-##oDY2L(te+Mch&gLYtJ,MEtJfLh'x'M=$CS-ZZ%P]8bZ>#S?YY#%Q&q'3^Fw&?D)UDNrocM3A76/"
2834     "/oL?#h7gl85[qW/NDOk%16ij;+:1a'iNIdb-ou8.P*w,v5#EI$TWS>Pot-R*H'-SEpA:g)f+O$%%`kA#G=8RMmG1&O`>to8bC]T&$,n.LoO>29sp3dt-52U%VM#q7'DHpg+#Z9%H[K<L"
2835     "%a2E-grWVM3@2=-k22tL]4$##6We'8UJCKE[d_=%wI;'6X-GsLX4j^SgJ$##R*w,vP3wK#iiW&#*h^D&R?jp7+/u&#(AP##XU8c$fSYW-J95_-Dp[g9wcO&#M-h1OcJlc-*vpw0xUX&#"
2836     "OQFKNX@QI'IoPp7nb,QU//MQ&ZDkKP)X<WSVL(68uVl&#c'[0#(s1X&xm$Y%B7*K:eDA323j998GXbA#pwMs-jgD$9QISB-A_(aN4xoFM^@C58D0+Q+q3n0#3U1InDjF682-SjMXJK)("
2837     "h$hxua_K]ul92%'BOU&#BRRh-slg8KDlr:%L71Ka:.A;%YULjDPmL<LYs8i#XwJOYaKPKc1h:'9Ke,g)b),78=I39B;xiY$bgGw-&.Zi9InXDuYa%G*f2Bq7mn9^#p1vv%#(Wi-;/Z5h"
2838     "o;#2:;%d&#x9v68C5g?ntX0X)pT`;%pB3q7mgGN)3%(P8nTd5L7GeA-GL@+%J3u2:(Yf>et`e;)f#Km8&+DC$I46>#Kr]]u-[=99tts1.qb#q72g1WJO81q+eN'03'eM>&1XxY-caEnO"
2839     "j%2n8)),?ILR5^.Ibn<-X-Mq7[a82Lq:F&#ce+S9wsCK*x`569E8ew'He]h:sI[2LM$[guka3ZRd6:t%IG:;$%YiJ:Nq=?eAw;/:nnDq0(CYcMpG)qLN4$##&J<j$UpK<Q4a1]MupW^-"
2840     "sj_$%[HK%'F####QRZJ::Y3EGl4'@%FkiAOg#p[##O`gukTfBHagL<LHw%q&OV0##F=6/:chIm0@eCP8X]:kFI%hl8hgO@RcBhS-@Qb$%+m=hPDLg*%K8ln(wcf3/'DW-$.lR?n[nCH-"
2841     "eXOONTJlh:.RYF%3'p6sq:UIMA945&^HFS87@$EP2iG<-lCO$%c`uKGD3rC$x0BL8aFn--`ke%#HMP'vh1/R&O_J9'um,.<tx[@%wsJk&bUT2`0uMv7gg#qp/ij.L56'hl;.s5CUrxjO"
2842     "M7-##.l+Au'A&O:-T72L]P`&=;ctp'XScX*rU.>-XTt,%OVU4)S1+R-#dg0/Nn?Ku1^0f$B*P:Rowwm-`0PKjYDDM'3]d39VZHEl4,.j']Pk-M.h^&:0FACm$maq-&sgw0t7/6(^xtk%"
2843     "LuH88Fj-ekm>GA#_>568x6(OFRl-IZp`&b,_P'$M<Jnq79VsJW/mWS*PUiq76;]/NM_>hLbxfc$mj`,O;&%W2m`Zh:/)Uetw:aJ%]K9h:TcF]u_-Sj9,VK3M.*'&0D[Ca]J9gp8,kAW]"
2844     "%(?A%R$f<->Zts'^kn=-^@c4%-pY6qI%J%1IGxfLU9CP8cbPlXv);C=b),<2mOvP8up,UVf3839acAWAW-W?#ao/^#%KYo8fRULNd2.>%m]UK:n%r$'sw]J;5pAoO_#2mO3n,'=H5(et"
2845     "Hg*`+RLgv>=4U8guD$I%D:W>-r5V*%j*W:Kvej.Lp$<M-SGZ':+Q_k+uvOSLiEo(<aD/K<CCc`'Lx>'?;++O'>()jLR-^u68PHm8ZFWe+ej8h:9r6L*0//c&iH&R8pRbA#Kjm%upV1g:"
2846     "a_#Ur7FuA#(tRh#.Y5K+@?3<-8m0$PEn;J:rh6?I6uG<-`wMU'ircp0LaE_OtlMb&1#6T.#FDKu#1Lw%u%+GM+X'e?YLfjM[VO0MbuFp7;>Q&#WIo)0@F%q7c#4XAXN-U&VB<HFF*qL("
2847     "$/V,;(kXZejWO`<[5?\?ewY(*9=%wDc;,u<'9t3W-(H1th3+G]ucQ]kLs7df($/*JL]@*t7Bu_G3_7mp7<iaQjO@.kLg;x3B0lqp7Hf,^Ze7-##@/c58Mo(3;knp0%)A7?-W+eI'o8)b<"
2848     "nKnw'Ho8C=Y>pqB>0ie&jhZ[?iLR@@_AvA-iQC(=ksRZRVp7`.=+NpBC%rh&3]R:8XDmE5^V8O(x<<aG/1N$#FX$0V5Y6x'aErI3I$7x%E`v<-BY,)%-?Psf*l?%C3.mM(=/M0:JxG'?"
2849     "7WhH%o'a<-80g0NBxoO(GH<dM]n.+%q@jH?f.UsJ2Ggs&4<-e47&Kl+f//9@`b+?.TeN_&B8Ss?v;^Trk;f#YvJkl&w$]>-+k?'(<S:68tq*WoDfZu';mM?8X[ma8W%*`-=;D.(nc7/;"
2850     ")g:T1=^J$&BRV(-lTmNB6xqB[@0*o.erM*<SWF]u2=st-*(6v>^](H.aREZSi,#1:[IXaZFOm<-ui#qUq2$##Ri;u75OK#(RtaW-K-F`S+cF]uN`-KMQ%rP/Xri.LRcB##=YL3BgM/3M"
2851     "D?@f&1'BW-)Ju<L25gl8uhVm1hL$##*8###'A3/LkKW+(^rWX?5W_8g)a(m&K8P>#bmmWCMkk&#TR`C,5d>g)F;t,4:@_l8G/5h4vUd%&%950:VXD'QdWoY-F$BtUwmfe$YqL'8(PWX("
2852     "P?^@Po3$##`MSs?DWBZ/S>+4%>fX,VWv/w'KD`LP5IbH;rTV>n3cEK8U#bX]l-/V+^lj3;vlMb&[5YQ8#pekX9JP3XUC72L,,?+Ni&co7ApnO*5NK,((W-i:$,kp'UDAO(G0Sq7MVjJs"
2853     "bIu)'Z,*[>br5fX^:FPAWr-m2KgL<LUN098kTF&#lvo58=/vjDo;.;)Ka*hLR#/k=rKbxuV`>Q_nN6'8uTG&#1T5g)uLv:873UpTLgH+#FgpH'_o1780Ph8KmxQJ8#H72L4@768@Tm&Q"
2854     "h4CB/5OvmA&,Q&QbUoi$a_%3M01H)4x7I^&KQVgtFnV+;[Pc>[m4k//,]1?#`VY[Jr*3&&slRfLiVZJ:]?=K3Sw=[$=uRB?3xk48@aeg<Z'<$#4H)6,>e0jT6'N#(q%.O=?2S]u*(m<-"
2855     "V8J'(1)G][68hW$5'q[GC&5j`TE?m'esFGNRM)j,ffZ?-qx8;->g4t*:CIP/[Qap7/9'#(1sao7w-.qNUdkJ)tCF&#B^;xGvn2r9FEPFFFcL@.iFNkTve$m%#QvQS8U@)2Z+3K:AKM5i"
2856     "sZ88+dKQ)W6>J%CL<KE>`.d*(B`-n8D9oK<Up]c$X$(,)M8Zt7/[rdkqTgl-0cuGMv'?>-XV1q['-5k'cAZ69e;D_?$ZPP&s^+7])$*$#@QYi9,5P&#9r+$%CE=68>K8r0=dSC%%(@p7"
2857     ".m7jilQ02'0-VWAg<a/''3u.=4L$Y)6k/K:_[3=&jvL<L0C/2'v:^;-DIBW,B4E68:kZ;%?8(Q8BH=kO65BW?xSG&#@uU,DS*,?.+(o(#1vCS8#CHF>TlGW'b)Tq7VT9q^*^$$.:&N@@"
2858     "$&)WHtPm*5_rO0&e%K&#-30j(E4#'Zb.o/(Tpm$>K'f@[PvFl,hfINTNU6u'0pao7%XUp9]5.>%h`8_=VYbxuel.NTSsJfLacFu3B'lQSu/m6-Oqem8T+oE--$0a/k]uj9EwsG>%veR*"
2859     "hv^BFpQj:K'#SJ,sB-'#](j.Lg92rTw-*n%@/;39rrJF,l#qV%OrtBeC6/,;qB3ebNW[?,Hqj2L.1NP&GjUR=1D8QaS3Up&@*9wP?+lo7b?@%'k4`p0Z$22%K3+iCZj?XJN4Nm&+YF]u"
2860     "@-W$U%VEQ/,,>>#)D<h#`)h0:<Q6909ua+&VU%n2:cG3FJ-%@Bj-DgLr`Hw&HAKjKjseK</xKT*)B,N9X3]krc12t'pgTV(Lv-tL[xg_%=M_q7a^x?7Ubd>#%8cY#YZ?=,`Wdxu/ae&#"
2861     "w6)R89tI#6@s'(6Bf7a&?S=^ZI_kS&ai`&=tE72L_D,;^R)7[$s<Eh#c&)q.MXI%#v9ROa5FZO%sF7q7Nwb&#ptUJ:aqJe$Sl68%.D###EC><?-aF&#RNQv>o8lKN%5/$(vdfq7+ebA#"
2862     "u1p]ovUKW&Y%q]'>$1@-[xfn$7ZTp7mM,G,Ko7a&Gu%G[RMxJs[0MM%wci.LFDK)(<c`Q8N)jEIF*+?P2a8g%)$q]o2aH8C&<SibC/q,(e:v;-b#6[$NtDZ84Je2KNvB#$P5?tQ3nt(0"
2863     "d=j.LQf./Ll33+(;q3L-w=8dX$#WF&uIJ@-bfI>%:_i2B5CsR8&9Z&#=mPEnm0f`<&c)QL5uJ#%u%lJj+D-r;BoF&#4DoS97h5g)E#o:&S4weDF,9^Hoe`h*L+_a*NrLW-1pG_&2UdB8"
2864     "6e%B/:=>)N4xeW.*wft-;$'58-ESqr<b?UI(_%@[P46>#U`'6AQ]m&6/`Z>#S?YY#Vc;r7U2&326d=w&H####?TZ`*4?&.MK?LP8Vxg>$[QXc%QJv92.(Db*B)gb*BM9dM*hJMAo*c&#"
2865     "b0v=Pjer]$gG&JXDf->'StvU7505l9$AFvgYRI^&<^b68?j#q9QX4SM'RO#&sL1IM.rJfLUAj221]d##DW=m83u5;'bYx,*Sl0hL(W;;$doB&O/TQ:(Z^xBdLjL<Lni;''X.`$#8+1GD"
2866     ":k$YUWsbn8ogh6rxZ2Z9]%nd+>V#*8U_72Lh+2Q8Cj0i:6hp&$C/:p(HK>T8Y[gHQ4`4)'$Ab(Nof%V'8hL&#<NEdtg(n'=S1A(Q1/I&4([%dM`,Iu'1:_hL>SfD07&6D<fp8dHM7/g+"
2867     "tlPN9J*rKaPct&?'uBCem^jn%9_K)<,C5K3s=5g&GmJb*[SYq7K;TRLGCsM-$$;S%:Y@r7AK0pprpL<Lrh,q7e/%KWK:50I^+m'vi`3?%Zp+<-d+$L-Sv:@.o19n$s0&39;kn;S%BSq*"
2868     "$3WoJSCLweV[aZ'MQIjO<7;X-X;&+dMLvu#^UsGEC9WEc[X(wI7#2.(F0jV*eZf<-Qv3J-c+J5AlrB#$p(H68LvEA'q3n0#m,[`*8Ft)FcYgEud]CWfm68,(aLA$@EFTgLXoBq/UPlp7"
2869     ":d[/;r_ix=:TF`S5H-b<LI&HY(K=h#)]Lk$K14lVfm:x$H<3^Ql<M`$OhapBnkup'D#L$Pb_`N*g]2e;X/Dtg,bsj&K#2[-:iYr'_wgH)NUIR8a1n#S?Yej'h8^58UbZd+^FKD*T@;6A"
2870     "7aQC[K8d-(v6GI$x:T<&'Gp5Uf>@M.*J:;$-rv29'M]8qMv-tLp,'886iaC=Hb*YJoKJ,(j%K=H`K.v9HggqBIiZu'QvBT.#=)0ukruV&.)3=(^1`o*Pj4<-<aN((^7('#Z0wK#5GX@7"
2871     "u][`*S^43933A4rl][`*O4CgLEl]v$1Q3AeF37dbXk,.)vj#x'd`;qgbQR%FW,2(?LO=s%Sc68%NP'##Aotl8x=BE#j1UD([3$M(]UI2LX3RpKN@;/#f'f/&_mt&F)XdF<9t4)Qa.*kT"
2872     "LwQ'(TTB9.xH'>#MJ+gLq9-##@HuZPN0]u:h7.T..G:;$/Usj(T7`Q8tT72LnYl<-qx8;-HV7Q-&Xdx%1a,hC=0u+HlsV>nuIQL-5<N?)NBS)QN*_I,?&)2'IM%L3I)X((e/dl2&8'<M"
2873     ":^#M*Q+[T.Xri.LYS3v%fF`68h;b-X[/En'CR.q7E)p'/kle2HM,u;^%OKC-N+Ll%F9CF<Nf'^#t2L,;27W:0O@6##U6W7:$rJfLWHj$#)woqBefIZ.PK<b*t7ed;p*_m;4ExK#h@&]>"
2874     "_>@kXQtMacfD.m-VAb8;IReM3$wf0''hra*so568'Ip&vRs849'MRYSp%:t:h5qSgwpEr$B>Q,;s(C#$)`svQuF$##-D,##,g68@2[T;.XSdN9Qe)rpt._K-#5wF)sP'##p#C0c%-Gb%"
2875     "hd+<-j'Ai*x&&HMkT]C'OSl##5RG[JXaHN;d'uA#x._U;.`PU@(Z3dt4r152@:v,'R.Sj'w#0<-;kPI)FfJ&#AYJ&#//)>-k=m=*XnK$>=)72L]0I%>.G690a:$##<,);?;72#?x9+d;"
2876     "^V'9;jY@;)br#q^YQpx:X#Te$Z^'=-=bGhLf:D6&bNwZ9-ZD#n^9HhLMr5G;']d&6'wYmTFmL<LD)F^%[tC'8;+9E#C$g%#5Y>q9wI>P(9mI[>kC-ekLC/R&CH+s'B;K-M6$EB%is00:"
2877     "+A4[7xks.LrNk0&E)wILYF@2L'0Nb$+pv<(2.768/FrY&h$^3i&@+G%JT'<-,v`3;_)I9M^AE]CN?Cl2AZg+%4iTpT3<n-&%H%b<FDj2M<hH=&Eh<2Len$b*aTX=-8QxN)k11IM1c^j%"
2878     "9s<L<NFSo)B?+<-(GxsF,^-Eh@$4dXhN$+#rxK8'je'D7k`e;)2pYwPA'_p9&@^18ml1^[@g4t*[JOa*[=Qp7(qJ_oOL^('7fB&Hq-:sf,sNj8xq^>$U4O]GKx'm9)b@p7YsvK3w^YR-"
2879     "CdQ*:Ir<($u&)#(&?L9Rg3H)4fiEp^iI9O8KnTj,]H?D*r7'M;PwZ9K0E^k&-cpI;.p/6_vwoFMV<->#%Xi.LxVnrU(4&8/P+:hLSKj$#U%]49t'I:rgMi'FL@a:0Y-uA[39',(vbma*"
2880     "hU%<-SRF`Tt:542R_VV$p@[p8DV[A,?1839FWdF<TddF<9Ah-6&9tWoDlh]&1SpGMq>Ti1O*H&#(AL8[_P%.M>v^-))qOT*F5Cq0`Ye%+$B6i:7@0IX<N+T+0MlMBPQ*Vj>SsD<U4JHY"
2881     "8kD2)2fU/M#$e.)T4,_=8hLim[&);?UkK'-x?'(:siIfL<$pFM`i<?%W(mGDHM%>iWP,##P`%/L<eXi:@Z9C.7o=@(pXdAO/NLQ8lPl+HPOQa8wD8=^GlPa8TKI1CjhsCTSLJM'/Wl>-"
2882     "S(qw%sf/@%#B6;/U7K]uZbi^Oc^2n<bhPmUkMw>%t<)'mEVE''n`WnJra$^TKvX5B>;_aSEK',(hwa0:i4G?.Bci.(X[?b*($,=-n<.Q%`(X=?+@Am*Js0&=3bh8K]mL<LoNs'6,'85`"
2883     "0?t/'_U59@]ddF<#LdF<eWdF<OuN/45rY<-L@&#+fm>69=Lb,OcZV/);TTm8VI;?%OtJ<(b4mq7M6:u?KRdF<gR@2L=FNU-<b[(9c/ML3m;Z[$oF3g)GAWqpARc=<ROu7cL5l;-[A]%/"
2884     "+fsd;l#SafT/f*W]0=O'$(Tb<[)*@e775R-:Yob%g*>l*:xP?Yb.5)%w_I?7uk5JC+FS(m#i'k.'a0i)9<7b'fs'59hq$*5Uhv##pi^8+hIEBF`nvo`;'l0.^S1<-wUK2/Coh58KKhLj"
2885     "M=SO*rfO`+qC`W-On.=AJ56>>i2@2LH6A:&5q`?9I3@@'04&p2/LVa*T-4<-i3;M9UvZd+N7>b*eIwg:CC)c<>nO&#<IGe;__.thjZl<%w(Wk2xmp4Q@I#I9,DF]u7-P=.-_:YJ]aS@V"
2886     "?6*C()dOp7:WL,b&3Rg/.cmM9&r^>$(>.Z-I&J(Q0Hd5Q%7Co-b`-c<N(6r@ip+AurK<m86QIth*#v;-OBqi+L7wDE-Ir8K['m+DDSLwK&/.?-V%U_%3:qKNu$_b*B-kp7NaD'QdWQPK"
2887     "Yq[@>P)hI;*_F]u`Rb[.j8_Q/<&>uu+VsH$sM9TA%?)(vmJ80),P7E>)tjD%2L=-t#fK[%`v=Q8<FfNkgg^oIbah*#8/Qt$F&:K*-(N/'+1vMB,u()-a.VUU*#[e%gAAO(S>WlA2);Sa"
2888     ">gXm8YB`1d@K#n]76-a$U,mF<fX]idqd)<3,]J7JmW4`6]uks=4-72L(jEk+:bJ0M^q-8Dm_Z?0olP1C9Sa&H[d&c$ooQUj]Exd*3ZM@-WGW2%s',B-_M%>%Ul:#/'xoFM9QX-$.QN'>"
2889     "[%$Z$uF6pA6Ki2O5:8w*vP1<-1`[G,)-m#>0`P&#eb#.3i)rtB61(o'$?X3B</R90;eZ]%Ncq;-Tl]#F>2Qft^ae_5tKL9MUe9b*sLEQ95C&`=G?@Mj=wh*'3E>=-<)Gt*Iw)'QG:`@I"
2890     "wOf7&]1i'S01B+Ev/Nac#9S;=;YQpg_6U`*kVY39xK,[/6Aj7:'1Bm-_1EYfa1+o&o4hp7KN_Q(OlIo@S%;jVdn0'1<Vc52=u`3^o-n1'g4v58Hj&6_t7$##?M)c<$bgQ_'SY((-xkA#"
2891     "Y(,p'H9rIVY-b,'%bCPF7.J<Up^,(dU1VY*5#WkTU>h19w,WQhLI)3S#f$2(eb,jr*b;3Vw]*7NH%$c4Vs,eD9>XW8?N]o+(*pgC%/72LV-u<Hp,3@e^9UB1J+ak9-TN/mhKPg+AJYd$"
2892     "MlvAF_jCK*.O-^(63adMT->W%iewS8W6m2rtCpo'RS1R84=@paTKt)>=%&1[)*vp'u+x,VrwN;&]kuO9JDbg=pO$J*.jVe;u'm0dr9l,<*wMK*Oe=g8lV_KEBFkO'oU]^=[-792#ok,)"
2893     "i]lR8qQ2oA8wcRCZ^7w/Njh;?.stX?Q1>S1q4Bn$)K1<-rGdO'$Wr.Lc.CG)$/*JL4tNR/,SVO3,aUw'DJN:)Ss;wGn9A32ijw%FL+Z0Fn.U9;reSq)bmI32U==5ALuG&#Vf1398/pVo"
2894     "1*c-(aY168o<`JsSbk-,1N;$>0:OUas(3:8Z972LSfF8eb=c-;>SPw7.6hn3m`9^Xkn(r.qS[0;T%&Qc=+STRxX'q1BNk3&*eu2;&8q$&x>Q#Q7^Tf+6<(d%ZVmj2bDi%.3L2n+4W'$P"
2895     "iDDG)g,r%+?,$@?uou5tSe2aN_AQU*<h`e-GI7)?OK2A.d7_c)?wQ5AS@DL3r#7fSkgl6-++D:'A,uq7SvlB$pcpH'q3n0#_%dY#xCpr-l<F0NR@-##FEV6NTF6##$l84N1w?AO>'IAO"
2896     "URQ##V^Fv-XFbGM7Fl(N<3DhLGF%q.1rC$#:T__&Pi68%0xi_&[qFJ(77j_&JWoF.V735&T,[R*:xFR*K5>>#`bW-?4Ne_&6Ne_&6Ne_&n`kr-#GJcM6X;uM6X;uM(.a..^2TkL%oR(#"
2897     ";u.T%fAr%4tJ8&><1=GHZ_+m9/#H1F^R#SC#*N=BA9(D?v[UiFY>>^8p,KKF.W]L29uLkLlu/+4T<XoIB&hx=T1PcDaB&;HH+-AFr?(m9HZV)FKS8JCw;SD=6[^/DZUL`EUDf]GGlG&>"
2898     "w$)F./^n3+rlo+DB;5sIYGNk+i1t-69Jg--0pao7Sm#K)pdHW&;LuDNH@H>#/X-TI(;P>#,Gc>#0Su>#4`1?#8lC?#<xU?#@.i?#D:%@#HF7@#LRI@#P_[@#Tkn@#Xw*A#]-=A#a9OA#"
2899     "d<F&#*;G##.GY##2Sl##6`($#:l:$#>xL$#B.`$#F:r$#JF.%#NR@%#R_R%#Vke%#Zww%#_-4&#3^Rh%Sflr-k'MS.o?.5/sWel/wpEM0%3'/1)K^f1-d>G21&v(35>V`39V7A4=onx4"
2900     "A1OY5EI0;6Ibgr6M$HS7Q<)58C5w,;WoA*#[%T*#`1g*#d=#+#hI5+#lUG+#pbY+#tnl+#x$),#&1;,#*=M,#.I`,#2Ur,#6b.-#;w[H#iQtA#m^0B#qjBB#uvTB##-hB#'9$C#+E6C#"
2901     "/QHC#3^ZC#7jmC#;v)D#?,<D#C8ND#GDaD#KPsD#O]/E#g1A5#KA*1#gC17#MGd;#8(02#L-d3#rWM4#Hga1#,<w0#T.j<#O#'2#CYN1#qa^:#_4m3#o@/=#eG8=#t8J5#`+78#4uI-#"
2902     "m3B2#SB[8#Q0@8#i[*9#iOn8#1Nm;#^sN9#qh<9#:=x-#P;K2#$%X9#bC+.#Rg;<#mN=.#MTF.#RZO.#2?)4#Y#(/#[)1/#b;L/#dAU/#0Sv;#lY$0#n`-0#sf60#(F24#wrH0#%/e0#"
2903     "TmD<#%JSMFove:CTBEXI:<eh2g)B,3h2^G3i;#d3jD>)4kMYD4lVu`4m`:&5niUA5@(A5BA1]PBB:xlBCC=2CDLXMCEUtiCf&0g2'tN?PGT4CPGT4CPGT4CPGT4CPGT4CPGT4CPGT4CP"
2904     "GT4CPGT4CPGT4CPGT4CPGT4CPGT4CP-qekC`.9kEg^+F$kwViFJTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5KTB&5o,^<-28ZI'O?;xp"
2905     "O?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xpO?;xp;7q-#lLYI:xvD=#";
2906
2907 static const char* GetDefaultCompressedFontDataTTFBase85()
2908 {
2909     return proggy_clean_ttf_compressed_data_base85;
2910 }