| 1 | #include <stdio.h> |
| 2 | #include <stdlib.h> |
| 3 | |
| 4 | #include "SDL.h" |
| 5 | |
| 6 | /* This is an example 16x16 cursor |
| 7 | top left : black |
| 8 | top right : inverted color or black |
| 9 | bottom left: white |
| 10 | bottom right: transparent |
| 11 | (swap left and right for different endianness) |
| 12 | */ |
| 13 | |
| 14 | Uint16 cursor_data[16]={ |
| 15 | 0xffff, |
| 16 | 0xffff, |
| 17 | 0xffff, |
| 18 | 0xffff, |
| 19 | |
| 20 | 0xffff, |
| 21 | 0xffff, |
| 22 | 0xffff, |
| 23 | 0xffff, |
| 24 | |
| 25 | 0x0000, |
| 26 | 0x0000, |
| 27 | 0x0000, |
| 28 | 0x0000, |
| 29 | |
| 30 | 0x0000, |
| 31 | 0x0000, |
| 32 | 0x0000, |
| 33 | 0x0000 |
| 34 | }; |
| 35 | |
| 36 | Uint16 cursor_mask[16]={ |
| 37 | 0xff00, |
| 38 | 0xff00, |
| 39 | 0xff00, |
| 40 | 0xff00, |
| 41 | |
| 42 | 0xff00, |
| 43 | 0xff00, |
| 44 | 0xff00, |
| 45 | 0xff00, |
| 46 | |
| 47 | 0xff00, |
| 48 | 0xff00, |
| 49 | 0xff00, |
| 50 | 0xff00, |
| 51 | |
| 52 | 0xff00, |
| 53 | 0xff00, |
| 54 | 0xff00, |
| 55 | 0xff00 |
| 56 | }; |
| 57 | |
| 58 | /* another test cursor: smaller than 16x16, and with an odd height */ |
| 59 | |
| 60 | Uint8 small_cursor_data[11] = { 0x00, 0x18, 0x08, 0x38, 0x44, 0x54, 0x44, 0x38, 0x20, 0x20, 0x00 }; |
| 61 | Uint8 small_cursor_mask[11] = { 0x3C, 0x3C, 0x3C, 0x7C, 0xC6, 0xC6, 0xC6, 0x7C, 0x78, 0x70, 0x70 }; |
| 62 | |
| 63 | /* XPM */ |
| 64 | static const char *arrow[] = { |
| 65 | /* width height num_colors chars_per_pixel */ |
| 66 | " 32 32 3 1", |
| 67 | /* colors */ |
| 68 | "X c #000000", |
| 69 | ". c #ffffff", |
| 70 | " c None", |
| 71 | /* pixels */ |
| 72 | "X ", |
| 73 | "XX ", |
| 74 | "X.X ", |
| 75 | "X..X ", |
| 76 | "X...X ", |
| 77 | "X....X ", |
| 78 | "X.....X ", |
| 79 | "X......X ", |
| 80 | "X.......X ", |
| 81 | "X........X ", |
| 82 | "X.....XXXXX ", |
| 83 | "X..X..X ", |
| 84 | "X.X X..X ", |
| 85 | "XX X..X ", |
| 86 | "X X..X ", |
| 87 | " X..X ", |
| 88 | " X..X ", |
| 89 | " X..X ", |
| 90 | " XX ", |
| 91 | " ", |
| 92 | " ", |
| 93 | " ", |
| 94 | " ", |
| 95 | " ", |
| 96 | " ", |
| 97 | " ", |
| 98 | " ", |
| 99 | " ", |
| 100 | " ", |
| 101 | " ", |
| 102 | " ", |
| 103 | " ", |
| 104 | "0,0" |
| 105 | }; |
| 106 | |
| 107 | static SDL_Cursor *create_arrow_cursor() |
| 108 | { |
| 109 | int i, row, col; |
| 110 | Uint8 data[4*32]; |
| 111 | Uint8 mask[4*32]; |
| 112 | int hot_x, hot_y; |
| 113 | |
| 114 | i = -1; |
| 115 | for ( row=0; row<32; ++row ) { |
| 116 | for ( col=0; col<32; ++col ) { |
| 117 | if ( col % 8 ) { |
| 118 | data[i] <<= 1; |
| 119 | mask[i] <<= 1; |
| 120 | } else { |
| 121 | ++i; |
| 122 | data[i] = mask[i] = 0; |
| 123 | } |
| 124 | switch (arrow[4+row][col]) { |
| 125 | case 'X': |
| 126 | data[i] |= 0x01; |
| 127 | mask[i] |= 0x01; |
| 128 | break; |
| 129 | case '.': |
| 130 | mask[i] |= 0x01; |
| 131 | break; |
| 132 | case ' ': |
| 133 | break; |
| 134 | } |
| 135 | } |
| 136 | } |
| 137 | sscanf(arrow[4+row], "%d,%d", &hot_x, &hot_y); |
| 138 | return SDL_CreateCursor(data, mask, 32, 32, hot_x, hot_y); |
| 139 | } |
| 140 | |
| 141 | |
| 142 | int main(int argc, char *argv[]) |
| 143 | { |
| 144 | SDL_Surface *screen; |
| 145 | SDL_bool quit = SDL_FALSE, first_time = SDL_TRUE; |
| 146 | SDL_Cursor *cursor[3]; |
| 147 | int current; |
| 148 | |
| 149 | /* Load the SDL library */ |
| 150 | if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { |
| 151 | fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); |
| 152 | return(1); |
| 153 | } |
| 154 | |
| 155 | screen = SDL_SetVideoMode(320,200,8,SDL_ANYFORMAT); |
| 156 | if (screen==NULL) { |
| 157 | fprintf(stderr, "Couldn't initialize video mode: %s\n",SDL_GetError()); |
| 158 | return(1); |
| 159 | } |
| 160 | |
| 161 | SDL_FillRect(screen, NULL, 0x664422); |
| 162 | |
| 163 | cursor[0] = SDL_CreateCursor((Uint8 *)cursor_data, (Uint8 *)cursor_mask, |
| 164 | 16, 16, 8, 8); |
| 165 | if (cursor[0]==NULL) { |
| 166 | fprintf(stderr, "Couldn't initialize test cursor: %s\n",SDL_GetError()); |
| 167 | SDL_Quit(); |
| 168 | return(1); |
| 169 | } |
| 170 | cursor[1] = create_arrow_cursor(); |
| 171 | if (cursor[1]==NULL) { |
| 172 | fprintf(stderr, "Couldn't initialize arrow cursor: %s\n",SDL_GetError()); |
| 173 | SDL_FreeCursor(cursor[0]); |
| 174 | SDL_Quit(); |
| 175 | return(1); |
| 176 | } |
| 177 | cursor[2] = SDL_CreateCursor(small_cursor_data, small_cursor_mask, |
| 178 | 8, 11, 3, 5); |
| 179 | if (cursor[2]==NULL) { |
| 180 | fprintf(stderr, "Couldn't initialize test cursor: %s\n",SDL_GetError()); |
| 181 | SDL_Quit(); |
| 182 | return(1); |
| 183 | } |
| 184 | |
| 185 | current = 0; |
| 186 | SDL_SetCursor(cursor[current]); |
| 187 | |
| 188 | while (!quit) { |
| 189 | SDL_Event event; |
| 190 | while (SDL_PollEvent(&event)) { |
| 191 | switch(event.type) { |
| 192 | case SDL_MOUSEBUTTONDOWN: |
| 193 | current = (current + 1)%3; |
| 194 | SDL_SetCursor(cursor[current]); |
| 195 | break; |
| 196 | case SDL_KEYDOWN: |
| 197 | if (event.key.keysym.sym == SDLK_ESCAPE) { |
| 198 | quit = SDL_TRUE; |
| 199 | } |
| 200 | break; |
| 201 | case SDL_QUIT: |
| 202 | quit = SDL_TRUE; |
| 203 | break; |
| 204 | } |
| 205 | } |
| 206 | SDL_Flip(screen); |
| 207 | SDL_Delay(1); |
| 208 | } |
| 209 | |
| 210 | SDL_FreeCursor(cursor[0]); |
| 211 | SDL_FreeCursor(cursor[1]); |
| 212 | SDL_FreeCursor(cursor[2]); |
| 213 | |
| 214 | SDL_Quit(); |
| 215 | return(0); |
| 216 | } |