Mercurial > sdl-ios-xcode
view test/testcursor.c @ 2318:0c653886cce7
HandleEvent() returns done each time it is called. If done was set to 0 the program should quit, but because done is not checked until *all* events are handled a
following event can reset done to 1 and prevent the program from terminating when told to. I fixed the while loop that handles events to check for the state of done
after handling each event. That could leave some events unhandled when the program exits, but it ensures that the program will exit.
author | Bob Pendleton <bob@pendleton.com> |
---|---|
date | Wed, 20 Feb 2008 23:27:33 +0000 |
parents | 3bdb1408f734 |
children | 14d32495a502 |
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#include <stdio.h> #include <stdlib.h> #include "SDL.h" /* This is an example 16x16 cursor top left : black top right : inverted color or black bottom left: white bottom right: transparent (swap left and right for different endianness) */ Uint16 cursor_data[16] = { 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0xffff, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 }; Uint16 cursor_mask[16] = { 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00, 0xff00 }; /* another test cursor: smaller than 16x16, and with an odd height */ Uint8 small_cursor_data[11] = { 0x00, 0x18, 0x08, 0x38, 0x44, 0x54, 0x44, 0x38, 0x20, 0x20, 0x00 }; Uint8 small_cursor_mask[11] = { 0x3C, 0x3C, 0x3C, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0x78, 0x70, 0x70 }; /* XPM */ static const char *arrow[] = { /* width height num_colors chars_per_pixel */ " 32 32 3 1", /* colors */ "X c #000000", ". c #ffffff", " c None", /* pixels */ "X ", "XX ", "X.X ", "X..X ", "X...X ", "X....X ", "X.....X ", "X......X ", "X.......X ", "X........X ", "X.....XXXXX ", "X..X..X ", "X.X X..X ", "XX X..X ", "X X..X ", " X..X ", " X..X ", " X..X ", " XX ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", " ", "0,0" }; static SDL_Cursor * create_arrow_cursor() { int i, row, col; Uint8 data[4 * 32]; Uint8 mask[4 * 32]; int hot_x, hot_y; i = -1; for (row = 0; row < 32; ++row) { for (col = 0; col < 32; ++col) { if (col % 8) { data[i] <<= 1; mask[i] <<= 1; } else { ++i; data[i] = mask[i] = 0; } switch (arrow[4 + row][col]) { case 'X': data[i] |= 0x01; mask[i] |= 0x01; break; case '.': mask[i] |= 0x01; break; case ' ': break; } } } sscanf(arrow[4 + row], "%d,%d", &hot_x, &hot_y); return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); } int main(int argc, char *argv[]) { SDL_Surface *screen; SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE; SDL_Cursor *cursor[3]; int current; /* Load the SDL library */ if (SDL_Init(SDL_INIT_VIDEO) < 0) { fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError()); return (1); } screen = SDL_SetVideoMode(320, 200, 8, SDL_ANYFORMAT); if (screen == NULL) { fprintf(stderr, "Couldn't initialize video mode: %s\n", SDL_GetError()); return (1); } SDL_FillRect(screen, NULL, 0x664422); cursor[0] = SDL_CreateCursor((Uint8 *) cursor_data, (Uint8 *) cursor_mask, 16, 16, 8, 8); if (cursor[0] == NULL) { fprintf(stderr, "Couldn't initialize test cursor: %s\n", SDL_GetError()); SDL_Quit(); return (1); } cursor[1] = create_arrow_cursor(); if (cursor[1] == NULL) { fprintf(stderr, "Couldn't initialize arrow cursor: %s\n", SDL_GetError()); SDL_FreeCursor(cursor[0]); SDL_Quit(); return (1); } cursor[2] = SDL_CreateCursor(small_cursor_data, small_cursor_mask, 8, 11, 3, 5); if (cursor[2] == NULL) { fprintf(stderr, "Couldn't initialize test cursor: %s\n", SDL_GetError()); SDL_Quit(); return (1); } current = 0; SDL_SetCursor(cursor[current]); while (!quit) { SDL_Event event; while (SDL_PollEvent(&event)) { switch (event.type) { case SDL_MOUSEBUTTONDOWN: current = (current + 1) % 3; SDL_SetCursor(cursor[current]); break; case SDL_KEYDOWN: if (event.key.keysym.sym == SDLK_ESCAPE) { quit = SDL_TRUE; } break; case SDL_QUIT: quit = SDL_TRUE; break; } } SDL_Flip(screen); SDL_Delay(1); } SDL_FreeCursor(cursor[0]); SDL_FreeCursor(cursor[1]); SDL_FreeCursor(cursor[2]); SDL_Quit(); return (0); }