4 * The mouse cursor related stuff.
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6 * Copyright (c) 1999-2000 Pawel W. Olszta. All Rights Reserved.
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7 * Written by Pawel W. Olszta, <olszta@sourceforge.net>
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8 * Creation date: Thu Dec 16 1999
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10 * Permission is hereby granted, free of charge, to any person obtaining a
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11 * copy of this software and associated documentation files (the "Software"),
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12 * to deal in the Software without restriction, including without limitation
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13 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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14 * and/or sell copies of the Software, and to permit persons to whom the
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15 * Software is furnished to do so, subject to the following conditions:
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17 * The above copyright notice and this permission notice shall be included
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18 * in all copies or substantial portions of the Software.
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20 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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21 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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22 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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23 * PAWEL W. OLSZTA BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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24 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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25 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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28 #include <GL/freeglut.h>
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29 #include "freeglut_internal.h"
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32 * TODO BEFORE THE STABLE RELEASE:
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33 * glutSetCursor() -- Win32 mappings are incomplete.
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35 * It would be good to use custom mouse cursor shapes, and introduce
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36 * an option to display them using glBitmap() and/or texture mapping,
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37 * apart from the windowing system version.
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40 /* -- PRIVATE FUNCTIONS --------------------------------------------------- */
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42 extern void fgPlatformSetCursor ( SFG_Window *window, int cursorID );
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43 extern void fgPlatformWarpPointer ( int x, int y );
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45 #if TARGET_HOST_POSIX_X11 || TARGET_HOST_MAC_OSX || TARGET_HOST_SOLARIS
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46 #include <X11/cursorfont.h>
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49 * A factory method for an empty cursor
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51 static Cursor getEmptyCursor( void )
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53 static Cursor cursorNone = None;
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54 if( cursorNone == None ) {
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55 char cursorNoneBits[ 32 ];
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57 Pixmap cursorNonePixmap;
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58 memset( cursorNoneBits, 0, sizeof( cursorNoneBits ) );
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59 memset( &dontCare, 0, sizeof( dontCare ) );
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60 cursorNonePixmap = XCreateBitmapFromData ( fgDisplay.Display,
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61 fgDisplay.RootWindow,
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62 cursorNoneBits, 16, 16 );
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63 if( cursorNonePixmap != None ) {
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64 cursorNone = XCreatePixmapCursor( fgDisplay.Display,
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65 cursorNonePixmap, cursorNonePixmap,
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66 &dontCare, &dontCare, 0, 0 );
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67 XFreePixmap( fgDisplay.Display, cursorNonePixmap );
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73 typedef struct tag_cursorCacheEntry cursorCacheEntry;
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74 struct tag_cursorCacheEntry {
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75 unsigned int cursorShape; /* an XC_foo value */
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76 Cursor cachedCursor; /* None if the corresponding cursor has
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77 not been created yet */
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81 * Note: The arrangement of the table below depends on the fact that
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82 * the "normal" GLUT_CURSOR_* values start a 0 and are consecutive.
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84 static cursorCacheEntry cursorCache[] = {
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85 { XC_arrow, None }, /* GLUT_CURSOR_RIGHT_ARROW */
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86 { XC_top_left_arrow, None }, /* GLUT_CURSOR_LEFT_ARROW */
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87 { XC_hand1, None }, /* GLUT_CURSOR_INFO */
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88 { XC_pirate, None }, /* GLUT_CURSOR_DESTROY */
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89 { XC_question_arrow, None }, /* GLUT_CURSOR_HELP */
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90 { XC_exchange, None }, /* GLUT_CURSOR_CYCLE */
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91 { XC_spraycan, None }, /* GLUT_CURSOR_SPRAY */
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92 { XC_watch, None }, /* GLUT_CURSOR_WAIT */
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93 { XC_xterm, None }, /* GLUT_CURSOR_TEXT */
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94 { XC_crosshair, None }, /* GLUT_CURSOR_CROSSHAIR */
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95 { XC_sb_v_double_arrow, None }, /* GLUT_CURSOR_UP_DOWN */
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96 { XC_sb_h_double_arrow, None }, /* GLUT_CURSOR_LEFT_RIGHT */
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97 { XC_top_side, None }, /* GLUT_CURSOR_TOP_SIDE */
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98 { XC_bottom_side, None }, /* GLUT_CURSOR_BOTTOM_SIDE */
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99 { XC_left_side, None }, /* GLUT_CURSOR_LEFT_SIDE */
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100 { XC_right_side, None }, /* GLUT_CURSOR_RIGHT_SIDE */
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101 { XC_top_left_corner, None }, /* GLUT_CURSOR_TOP_LEFT_CORNER */
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102 { XC_top_right_corner, None }, /* GLUT_CURSOR_TOP_RIGHT_CORNER */
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103 { XC_bottom_right_corner, None }, /* GLUT_CURSOR_BOTTOM_RIGHT_CORNER */
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104 { XC_bottom_left_corner, None } /* GLUT_CURSOR_BOTTOM_LEFT_CORNER */
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107 static void fgPlatformSetCursor ( SFG_Window *window, int cursorID )
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111 * XXX FULL_CROSSHAIR demotes to plain CROSSHAIR. Old GLUT allows
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112 * for this, but if there is a system that easily supports a full-
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113 * window (or full-screen) crosshair, we might consider it.
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115 int cursorIDToUse =
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116 ( cursorID == GLUT_CURSOR_FULL_CROSSHAIR ) ? GLUT_CURSOR_CROSSHAIR : cursorID;
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118 if( ( cursorIDToUse >= 0 ) &&
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119 ( cursorIDToUse < sizeof( cursorCache ) / sizeof( cursorCache[0] ) ) ) {
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120 cursorCacheEntry *entry = &cursorCache[ cursorIDToUse ];
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121 if( entry->cachedCursor == None ) {
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122 entry->cachedCursor =
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123 XCreateFontCursor( fgDisplay.Display, entry->cursorShape );
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125 cursor = entry->cachedCursor;
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127 switch( cursorIDToUse )
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129 case GLUT_CURSOR_NONE:
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130 cursor = getEmptyCursor( );
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133 case GLUT_CURSOR_INHERIT:
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138 fgError( "Unknown cursor type: %d", cursorIDToUse );
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143 if ( cursorIDToUse == GLUT_CURSOR_INHERIT ) {
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144 XUndefineCursor( fgDisplay.Display, window->Window.Handle );
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145 } else if ( cursor != None ) {
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146 XDefineCursor( fgDisplay.Display, window->Window.Handle, cursor );
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147 } else if ( cursorIDToUse != GLUT_CURSOR_NONE ) {
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148 fgError( "Failed to create cursor" );
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153 static void fgPlatformWarpPointer ( int x, int y )
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158 fgStructure.CurrentWindow->Window.Handle,
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162 /* Make the warp visible immediately. */
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163 XFlush( fgDisplay.Display );
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168 /* -- INTERNAL FUNCTIONS ---------------------------------------------------- */
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169 void fgSetCursor ( SFG_Window *window, int cursorID )
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171 fgPlatformSetCursor ( window, cursorID );
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175 /* -- INTERFACE FUNCTIONS -------------------------------------------------- */
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178 * Set the cursor image to be used for the current window
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180 void FGAPIENTRY glutSetCursor( int cursorID )
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182 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutSetCursor" );
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183 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutSetCursor" );
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185 fgPlatformSetCursor ( fgStructure.CurrentWindow, cursorID );
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186 fgStructure.CurrentWindow->State.Cursor = cursorID;
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190 * Moves the mouse pointer to given window coordinates
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192 void FGAPIENTRY glutWarpPointer( int x, int y )
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194 FREEGLUT_EXIT_IF_NOT_INITIALISED ( "glutWarpPointer" );
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195 FREEGLUT_EXIT_IF_NO_WINDOW ( "glutWarpPointer" );
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197 fgPlatformWarpPointer ( x, y );
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200 /*** END OF FILE ***/
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