327 lines
9.4 KiB
C
327 lines
9.4 KiB
C
/*
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Copyright (C) 1997-2023 Sam Lantinga <slouken@libsdl.org>
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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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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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#include <stdlib.h>
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#ifdef __EMSCRIPTEN__
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#include <emscripten/emscripten.h>
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#endif
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#include <SDL3/SDL_test_common.h>
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#include <SDL3/SDL_main.h>
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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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/* 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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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_SetSurfaceColorKey(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_SetSurfaceColorKey(surface, 1, (*(Uint16 *)surface->pixels) & 0x00007FFF);
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break;
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case 16:
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SDL_SetSurfaceColorKey(surface, 1, *(Uint16 *)surface->pixels);
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break;
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case 24:
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SDL_SetSurfaceColorKey(surface, 1, (*(Uint32 *)surface->pixels) & 0x00FFFFFF);
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break;
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case 32:
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SDL_SetSurfaceColorKey(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_DestroySurface(surface);
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}
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return cursor;
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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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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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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 SDL_bool show_cursor;
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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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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_EVENT_MOUSE_BUTTON_DOWN) {
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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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++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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SDL_SetCursor(cursors[current_cursor]);
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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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} else {
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show_cursor = !show_cursor;
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if (show_cursor) {
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SDL_ShowCursor();
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} else {
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SDL_HideCursor();
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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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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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/* Enable standard application logging */
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SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
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/* Initialize test framework */
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state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
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if (state == NULL) {
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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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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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if (!SDLTest_CommonInit(state)) {
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quit(2);
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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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num_cursors = 0;
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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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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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if (num_cursors > 0) {
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SDL_SetCursor(cursors[0]);
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}
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show_cursor = SDL_CursorVisible();
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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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for (i = 0; i < num_cursors; ++i) {
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SDL_DestroyCursor(cursors[i]);
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}
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quit(0);
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/* keep the compiler happy ... */
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return 0;
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}
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