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