X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fui_exhibit.cc;h=e583e5d5dd31d568e5e66ae6617c338567c62d76;hp=355d0783acabf28ed45061782fd0024154a9d7be;hb=dda1406df303fd1ec73344fbcce34c6197138642;hpb=7ffa5c50d9254af9bd746fc5e6bc8e5db8eda675

diff --git a/src/ui_exhibit.cc b/src/ui_exhibit.cc
index 355d078..e583e5d 100644
--- a/src/ui_exhibit.cc
+++ b/src/ui_exhibit.cc
@@ -1,33 +1,78 @@
+#include <assert.h>
+#if defined(WIN32) || defined(__WIN32__)
+#include <malloc.h>
+#else
+#include <alloca.h>
+#endif
+#include <drawtext.h>
 #include "ui_exhibit.h"
 #include "ui.h"
 #include "app.h"
-#include <drawtext.h>
+#include "snode.h"
+#include "shader.h"
+#include "rtarg.h"
+
+struct Rect {
+	float x, y, w, h;
+};
 
-static void draw_titlebar();
-static void draw_tabs();
+static void draw_frame(const Rect &rect);
+static void draw_titlebar(const Rect &rect);
+static void draw_tabs(const Rect &rect);
+static void draw_text(const Rect &rect);
 static void layout_text(const char *text);
 
+static float aspect;
+static int ui_width, ui_height;
+
+static RenderTarget *rtarg;
+static const SceneNode *parent;
 static Vec3 pos;
 static Vec2 size;
-static float text_padding;
+static int text_padding;
+static float text_scale = 1.0f;//0.05f;
 static Exhibit *ex;
 static int vis_tab;
 static float scroll;
 static std::vector<const char*> text_lines;
+static int max_line_size;
 static AudioStream *voice;
 
+enum {COL_BG, COL_FG, COL_FRM};
+static float color[][3] = {
+	{0.014, 0.016, 0.04},	// COL_BG
+	{0.31, 0.58, 0.9},	// COL_FG
+	{0.19, 0.23, 0.46}	// COL_FRM
+};
+
 
 bool exui_init()
 {
-	size.x = 150;
-	size.y = 180;
-	text_padding = size.x * 0.01;
+	size.x = 15;
+	size.y = 18;
+	text_padding = 6;
+
+	aspect = size.x / size.y;
+	ui_height = 512;
+	ui_width = ui_height * aspect;
+
+	rtarg = new RenderTarget;
+	if(!rtarg->create(ui_width, ui_height, GL_SRGB_ALPHA)) {
+		error_log("failed to create exui render target\n");
+		return false;
+	}
 
 	return true;
 }
 
 void exui_shutdown()
 {
+	delete rtarg;
+}
+
+void exui_setnode(const SceneNode *node)
+{
+	parent = node;
 }
 
 void exui_change_tab(int dir)
@@ -70,20 +115,184 @@ void exui_update(float dt)
 	}
 }
 
+static void draw_2d_ui()
+{
+	dtx_use_font(ui_font, ui_font_size);
+	float rowspc = dtx_line_height() * text_scale;
+
+	glMatrixMode(GL_PROJECTION);
+	glPushMatrix();
+	glLoadIdentity();
+	glTranslatef(-1, 1, 0);
+	glScalef(2.0 / ui_width, -2.0 / ui_height, 1);
+
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+	glLoadIdentity();
+
+	bind_shader(0);
+
+	glPushAttrib(GL_ENABLE_BIT);
+	glDisable(GL_TEXTURE_2D);
+	glDisable(GL_LIGHTING);
+	glDisable(GL_DEPTH_TEST);
+
+	Rect rect = {0, 0, (float)ui_width, (float)ui_height};
+	draw_frame(rect);
+	Rect tbar_rect = {rect.x, rect.y, rect.w, rowspc + text_padding};	// half the padding
+	draw_titlebar(tbar_rect);
+	Rect tabs_rect = {tbar_rect.x, tbar_rect.y + tbar_rect.h, tbar_rect.w, tbar_rect.h};
+	draw_tabs(tabs_rect);
+	Rect text_rect = {rect.x, tabs_rect.y + tabs_rect.h, rect.w, rect.h - tabs_rect.y - tabs_rect.h};
+	draw_text(text_rect);
+
+	glPopAttrib();
+
+	glMatrixMode(GL_PROJECTION);
+	glPopMatrix();
+	glMatrixMode(GL_MODELVIEW);
+	glPopMatrix();
+}
+
 void exui_draw()
 {
 	if(!exsel_active) return;
+	if(!ui_font) return;
+
+	// render the 2D UI in a texture
+	push_render_target(rtarg);
+	glClearColor(0, 1, 0, 0);
+	glClear(GL_COLOR_BUFFER_BIT);
+	draw_2d_ui();
+	pop_render_target();
+
+	// place UI image into the scene
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+
+	Mat4 mvmat;
+	glGetFloatv(GL_MODELVIEW_MATRIX, mvmat[0]);
+
+	/*
+	if(parent) {
+		glMultMatrixf(parent->get_matrix()[0]);
+	}
+	glTranslatef(pos.x, pos.y, pos.z);
+	*/
+	if(parent) {
+		mvmat = parent->get_matrix() * mvmat;
+	}
+	mvmat.translate(pos.x, pos.y, pos.z);
+
+	mvmat[0][0] = mvmat[1][1] = mvmat[2][2] = 1.0f;
+	mvmat[0][1] = mvmat[0][2] = mvmat[1][0] = mvmat[2][0] = mvmat[1][2] = mvmat[2][1] = 0.0f;
+
+	glLoadMatrixf(mvmat[0]);
+
+	glPushAttrib(GL_ENABLE_BIT);
+	glEnable(GL_BLEND);
+	glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+	glEnable(GL_TEXTURE_2D);
+	glDepthMask(0);
+
+	bind_shader(0);
+	bind_texture(rtarg->texture());
+
+	glMatrixMode(GL_TEXTURE);
+	glLoadMatrixf(rtarg->texture_matrix()[0]);
+
+	glBegin(GL_QUADS);
+	glColor3f(1, 1, 1);
+	glTexCoord2f(0, 0); glVertex2f(-size.x / 2, -size.y / 2);
+	glTexCoord2f(1, 0); glVertex2f(size.x / 2, -size.y / 2);
+	glTexCoord2f(1, 1); glVertex2f(size.x / 2, size.y / 2);
+	glTexCoord2f(0, 1); glVertex2f(-size.x / 2, size.y / 2);
+	glEnd();
 
-	draw_titlebar();
-	draw_tabs();
+	glLoadIdentity();
+
+	glDepthMask(1);
+	glPopAttrib();
+
+	glMatrixMode(GL_MODELVIEW);
+	glPopMatrix();
+}
+
+static inline float *vrect(const Rect &rect, int i)
+{
+	static float v[2];
+	v[0] = ((i + 1) & 2) ? rect.x + rect.w : rect.x;
+	v[1] = (i & 2) ? rect.y : rect.y + rect.h;
+	return v;
+}
+
+static inline void draw_rect(const Rect &rect, int col)
+{
+	glBegin(GL_QUADS);
+	glColor3fv(color[col]);
+	for(int i=0; i<4; i++)
+		glVertex2fv(vrect(rect, i));
+	glEnd();
+}
+
+static void draw_frame(const Rect &rect)
+{
+	draw_rect(rect, COL_BG);
+	glLineWidth(3.0);
+	glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+	draw_rect(rect, COL_FRM);
+	glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+}
+
+static void draw_titlebar(const Rect &rect)
+{
+	draw_rect(rect, COL_FRM);
+
+	const char *title = ex->get_name();
+	if(title) {
+		glPushMatrix();
+		glTranslatef(rect.x + text_padding, rect.y + rect.h - text_padding, 0);
+		glScalef(text_scale, -text_scale, text_scale);
+
+		glColor3fv(color[COL_BG]);
+		dtx_string(ex->get_name());
+		glPopMatrix();
+	}
 }
 
-static void draw_titlebar()
+static void draw_tabs(const Rect &rect)
 {
 }
 
-static void draw_tabs()
+static void draw_text(const Rect &rect)
 {
+	char *buf = (char*)alloca(max_line_size + 1);
+
+	float dy = dtx_line_height() * text_scale;
+
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+	glTranslatef(rect.x + text_padding, rect.y + dy + text_padding, 0);
+	glScalef(text_scale, -text_scale, text_scale);
+
+	glColor3fv(color[COL_FG]);
+
+	int nlines = text_lines.size() - 1;
+	for(int i=0; i<nlines; i++) {
+		if(i < nlines - 1) {
+			int sz = text_lines[i + 1] - text_lines[i];
+			assert(sz <= max_line_size);
+			memcpy(buf, text_lines[i], sz);
+			buf[sz] = 0;
+		} else {
+			buf = (char*)text_lines[i];
+		}
+
+		dtx_string(buf);
+		glTranslatef(0, -dy, 0);
+	}
+
+	glPopMatrix();
 }
 
 static void layout_text(const char *text)
@@ -94,27 +303,36 @@ static void layout_text(const char *text)
 
 	dtx_use_font(ui_font, ui_font_size);
 
-	float pos = text_padding;
+	int left_margin = text_padding;
+	int right_margin = ui_width - text_padding;
+
 	text_lines.push_back(text);
 	const char *last_break = 0;
+	max_line_size = 1;
 
 	while(*text) {
 		if(*text == '\n') {	// paragraph break
 			text_lines.push_back(text);
 			text_lines.push_back(++text);
-			pos = text_padding;
 			last_break = 0;
 			continue;
 		}
 
 		int code = dtx_utf8_char_code(text);
 		const char *next = dtx_utf8_next_char((char*)text);
-		pos += dtx_glyph_width(code);
 
-		if(pos >= size.x - text_padding) {
+		struct dtx_box box;
+		dtx_substring_box(text_lines.back(), 0, text - text_lines.back(), &box);
+		float pos = left_margin + (box.width + box.x) * text_scale;
+
+		if(code < 256 && isspace(code)) {
+			last_break = text;
+		}
+
+		if(pos > right_margin) {
 			if(text == text_lines.back()) {
 				// not even a single character fits on a line... abort
-				warning_log("text layout failed. glyph %d doesn't fit in line (%g)\n", code, size.x - 2.0 * text_padding);
+				warning_log("text layout failed. glyph %d doesn't fit in line (%d)\n", code, right_margin - left_margin);
 				text_lines.clear();
 				return;
 			}
@@ -125,8 +343,24 @@ static void layout_text(const char *text)
 				// no good point to break, just break here
 				text_lines.push_back(text);
 			}
-			pos = text_padding;
+
+			int d = text_lines.back() - (text_lines[text_lines.size() - 2]);
+			if(d > max_line_size) max_line_size = d;
 		}
 		text = next;
 	}
+	text_lines.push_back(0);
+
+	/*
+	debug_log("text layout:\n");
+	for(size_t i=0; i<text_lines.size() - 1; i++) {
+		const char *p = text_lines[i];
+		while(*p && p != text_lines[i + 1]) {
+			putchar(*p);
+			++p;
+		}
+		putchar('\n');
+	}
+	debug_log("---\n");
+	*/
 }