Mercurial > sdl-ios-xcode
view test/testcursor.c @ 4593:3892fe2f6537
Fixed so many things. See the changelog listed below.
1. Use SDL_X11_HAVE_XRENDER to check for RENDER at runtime.
2. Added lots of comments.
3. Added checks and lots of calls to SDL_SetError().
4. Fixed X11_CreateTexture() so that the pixmap and image created
are for the format specified by the user and not the window
format. This is only for the RENDER case.
5. The above change required that functions to convert SDL
pixel format enums to Visuals and XRenderPictFormats be added.
6. Fixed lots of 'style' issues.
author | Sunny Sachanandani <sunnysachanandani@gmail.com> |
---|---|
date | Sat, 17 Jul 2010 15:38:24 +0530 |
parents | 14d32495a502 |
children |
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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(640, 480, 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); }