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/*
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include <stdio.h>
#include <stdint.h>
#include <png.h>
int main(int argc, char **argv)
{
Display *dpy;
XFixesCursorImage *cur;
unsigned long *src; /* XXX deep sigh */
unsigned x, y;
png_struct *png;
png_info *info;
png_byte **rows;
FILE *file;
dpy = XOpenDisplay(NULL);
if (dpy == NULL)
return 1;
if (!XFixesQueryExtension(dpy, (int *)&x, (int *)&y))
return 1;
cur = XFixesGetCursorImage(dpy);
if (cur == NULL)
return 1;
printf("Cursor on display '%s': %dx%d, (hotspot %dx%d)\n",
DisplayString(dpy),
cur->width, cur->height,
cur->xhot, cur->yhot);
file = fopen("cursor.png", "wb");
if (file == NULL)
return 2;
png = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
info = png_create_info_struct(png);
png_init_io(png, file);
png_set_IHDR(png, info,
cur->width, cur->height, 8,
PNG_COLOR_TYPE_RGB_ALPHA,
PNG_INTERLACE_NONE,
PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_write_info(png, info);
src = cur->pixels;
rows = malloc(cur->height*sizeof(png_byte*));
for (y = 0; y < cur->height; y++) {
rows[y] = malloc(cur->width * 4);
for (x = 0; x < cur->width; x++) {
uint32_t p = *src++;
uint8_t r = p >> 0;
uint8_t g = p >> 8;
uint8_t b = p >> 16;
uint8_t a = p >> 24;
if (a > 0x00 && a < 0xff) {
r = (r * 0xff + a /2) / a;
g = (g * 0xff + a /2) / a;
b = (b * 0xff + a /2) / a;
}
rows[y][4*x + 0] = b;
rows[y][4*x + 1] = g;
rows[y][4*x + 2] = r;
rows[y][4*x + 3] = a;
}
}
png_write_image(png, rows);
png_write_end(png, NULL);
fclose(file);
return 0;
}
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