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			326 lines
		
	
	
		
			9.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			326 lines
		
	
	
		
			9.3 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| /*
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|   Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
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| 
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|   This software is provided 'as-is', without any express or implied
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|   warranty.  In no event will the authors be held liable for any damages
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|   arising from the use of this software.
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| 
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|   Permission is granted to anyone to use this software for any purpose,
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|   including commercial applications, and to alter it and redistribute it
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|   freely.
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| */
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| 
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| #include <stdlib.h>
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| #include <stdio.h>
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| 
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| #ifdef __EMSCRIPTEN__
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| #include <emscripten/emscripten.h>
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| #endif
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| 
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| #include "SDL_test_common.h"
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| 
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| /* Stolen from the mailing list */
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| /* Creates a new mouse cursor from an XPM */
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| 
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| /* XPM */
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| static const char *arrow[] = {
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|     /* width height num_colors chars_per_pixel */
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|     "    32    32        3            1",
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|     /* colors */
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|     "X c #000000",
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|     ". c #ffffff",
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|     "  c None",
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|     /* pixels */
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|     "X                               ",
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|     "XX                              ",
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|     "X.X                             ",
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|     "X..X                            ",
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|     "X...X                           ",
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|     "X....X                          ",
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|     "X.....X                         ",
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|     "X......X                        ",
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|     "X.......X                       ",
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|     "X........X                      ",
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|     "X.....XXXXX                     ",
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|     "X..X..X                         ",
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|     "X.X X..X                        ",
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|     "XX  X..X                        ",
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|     "X    X..X                       ",
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|     "     X..X                       ",
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|     "      X..X                      ",
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|     "      X..X                      ",
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|     "       XX                       ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "                                ",
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|     "0,0"
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| };
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| 
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| static SDL_Cursor *
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| init_color_cursor(const char *file)
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| {
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|     SDL_Cursor *cursor = NULL;
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|     SDL_Surface *surface = SDL_LoadBMP(file);
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|     if (surface) {
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|         if (surface->format->palette) {
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|             SDL_SetColorKey(surface, 1, *(Uint8 *)surface->pixels);
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|         } else {
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|             switch (surface->format->BitsPerPixel) {
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|             case 15:
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|                 SDL_SetColorKey(surface, 1, (*(Uint16 *)surface->pixels) & 0x00007FFF);
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|                 break;
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|             case 16:
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|                 SDL_SetColorKey(surface, 1, *(Uint16 *)surface->pixels);
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|                 break;
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|             case 24:
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|                 SDL_SetColorKey(surface, 1, (*(Uint32 *)surface->pixels) & 0x00FFFFFF);
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|                 break;
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|             case 32:
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|                 SDL_SetColorKey(surface, 1, *(Uint32 *)surface->pixels);
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|                 break;
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|             }
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|         }
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|         cursor = SDL_CreateColorCursor(surface, 0, 0);
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|         SDL_FreeSurface(surface);
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|     }
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|     return cursor;
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| }
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| 
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| static SDL_Cursor *
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| init_system_cursor(const char *image[])
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| {
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|     int i, row, col;
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|     Uint8 data[4 * 32];
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|     Uint8 mask[4 * 32];
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|     int hot_x = 0;
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|     int hot_y = 0;
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| 
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|     i = -1;
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|     for (row = 0; row < 32; ++row) {
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|         for (col = 0; col < 32; ++col) {
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|             if (col % 8) {
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|                 data[i] <<= 1;
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|                 mask[i] <<= 1;
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|             } else {
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|                 ++i;
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|                 data[i] = mask[i] = 0;
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|             }
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|             switch (image[4 + row][col]) {
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|             case 'X':
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|                 data[i] |= 0x01;
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|                 mask[i] |= 0x01;
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|                 break;
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|             case '.':
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|                 mask[i] |= 0x01;
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|                 break;
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|             case ' ':
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|                 break;
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|             }
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|         }
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|     }
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|     (void)SDL_sscanf(image[4 + row], "%d,%d", &hot_x, &hot_y);
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|     return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y);
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| }
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| 
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| static SDLTest_CommonState *state;
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| int done;
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| static SDL_Cursor *cursors[1 + SDL_NUM_SYSTEM_CURSORS];
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| static SDL_SystemCursor cursor_types[1 + SDL_NUM_SYSTEM_CURSORS];
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| static int num_cursors;
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| static int current_cursor;
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| static int show_cursor;
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| 
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| /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
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| static void
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| quit(int rc)
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| {
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|     SDLTest_CommonQuit(state);
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|     exit(rc);
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| }
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| 
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| void loop()
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| {
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|     int i;
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|     SDL_Event event;
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|     /* Check for events */
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|     while (SDL_PollEvent(&event)) {
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|         SDLTest_CommonEvent(state, &event, &done);
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|         if (event.type == SDL_MOUSEBUTTONDOWN) {
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|             if (event.button.button == SDL_BUTTON_LEFT) {
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|                 if (num_cursors == 0) {
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|                     continue;
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|                 }
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| 
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|                 ++current_cursor;
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|                 if (current_cursor == num_cursors) {
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|                     current_cursor = 0;
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|                 }
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| 
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|                 SDL_SetCursor(cursors[current_cursor]);
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| 
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|                 switch ((int)cursor_types[current_cursor]) {
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|                 case (SDL_SystemCursor)-1:
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|                     SDL_Log("Custom cursor");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_ARROW:
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|                     SDL_Log("Arrow");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_IBEAM:
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|                     SDL_Log("I-beam");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_WAIT:
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|                     SDL_Log("Wait");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_CROSSHAIR:
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|                     SDL_Log("Crosshair");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_WAITARROW:
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|                     SDL_Log("Small wait cursor (or Wait if not available)");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_SIZENWSE:
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|                     SDL_Log("Double arrow pointing northwest and southeast");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_SIZENESW:
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|                     SDL_Log("Double arrow pointing northeast and southwest");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_SIZEWE:
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|                     SDL_Log("Double arrow pointing west and east");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_SIZENS:
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|                     SDL_Log("Double arrow pointing north and south");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_SIZEALL:
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|                     SDL_Log("Four pointed arrow pointing north, south, east, and west");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_NO:
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|                     SDL_Log("Slashed circle or crossbones");
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|                     break;
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|                 case SDL_SYSTEM_CURSOR_HAND:
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|                     SDL_Log("Hand");
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|                     break;
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|                 default:
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|                     SDL_Log("UNKNOWN CURSOR TYPE, FIX THIS PROGRAM.");
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|                     break;
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|                 }
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| 
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|             } else {
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|                 show_cursor = !show_cursor;
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|                 SDL_ShowCursor(show_cursor);
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|             }
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|         }
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|     }
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| 
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|     for (i = 0; i < state->num_windows; ++i) {
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|         SDL_Renderer *renderer = state->renderers[i];
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|         SDL_RenderClear(renderer);
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|         SDL_RenderPresent(renderer);
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|     }
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| #ifdef __EMSCRIPTEN__
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|     if (done) {
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|         emscripten_cancel_main_loop();
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|     }
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| #endif
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| }
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| 
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| int main(int argc, char *argv[])
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| {
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|     int i;
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|     const char *color_cursor = NULL;
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| 
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|     /* Enable standard application logging */
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|     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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| 
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|     /* Initialize test framework */
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|     state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
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|     if (!state) {
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|         return 1;
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|     }
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|     for (i = 1; i < argc;) {
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|         int consumed;
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| 
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|         consumed = SDLTest_CommonArg(state, i);
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|         if (consumed == 0) {
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|             color_cursor = argv[i];
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|             break;
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|         }
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|         if (consumed < 0) {
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|             SDLTest_CommonLogUsage(state, argv[0], NULL);
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|             quit(1);
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|         }
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|         i += consumed;
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|     }
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| 
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|     if (!SDLTest_CommonInit(state)) {
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|         quit(2);
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|     }
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| 
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|     for (i = 0; i < state->num_windows; ++i) {
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|         SDL_Renderer *renderer = state->renderers[i];
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|         SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF);
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|         SDL_RenderClear(renderer);
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|     }
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| 
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|     num_cursors = 0;
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| 
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|     if (color_cursor) {
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|         SDL_Cursor *cursor = init_color_cursor(color_cursor);
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|         if (cursor) {
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|             cursors[num_cursors] = cursor;
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|             cursor_types[num_cursors] = (SDL_SystemCursor)-1;
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|             num_cursors++;
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|         }
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|     } else {
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|         SDL_Cursor *cursor = init_system_cursor(arrow);
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|         if (cursor) {
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|             cursors[num_cursors] = cursor;
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|             cursor_types[num_cursors] = (SDL_SystemCursor)-1;
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|             num_cursors++;
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|         }
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|     }
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| 
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|     for (i = 0; i < SDL_NUM_SYSTEM_CURSORS; ++i) {
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|         SDL_Cursor *cursor = SDL_CreateSystemCursor((SDL_SystemCursor)i);
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|         if (cursor) {
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|             cursors[num_cursors] = cursor;
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|             cursor_types[num_cursors] = i;
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|             num_cursors++;
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|         }
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|     }
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| 
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|     if (num_cursors > 0) {
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|         SDL_SetCursor(cursors[0]);
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|     }
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| 
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|     show_cursor = SDL_ShowCursor(SDL_QUERY);
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| 
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|     /* Main render loop */
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|     done = 0;
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| #ifdef __EMSCRIPTEN__
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|     emscripten_set_main_loop(loop, 0, 1);
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| #else
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|     while (!done) {
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|         loop();
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|     }
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| #endif
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| 
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|     for (i = 0; i < num_cursors; ++i) {
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|         SDL_FreeCursor(cursors[i]);
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|     }
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|     quit(0);
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| 
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|     /* keep the compiler happy ... */
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|     return 0;
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| }
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| 
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| /* vi: set ts=4 sw=4 expandtab: */
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