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testcursor.c
204 lines (180 loc) · 4.09 KB
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testcursor.c
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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
};
/* 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[2];
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);
}
current = 0;
SDL_SetCursor(cursor[current]);
while (!quit) {
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_MOUSEBUTTONDOWN:
current = !current;
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_Quit();
return(0);
}