IABSD.fr/xenocara/lib/pixman/demos/trap-test.c

Branch : - branch - master - tag -

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  Commit

• Author : matthieu
  Date : 2011-07-24 13:05:47
  Hash : 0def8ce1
  Message : Update to pixman 0.22.2. 0.22.0 was tested by many. 0.22.2 only add a few bug fixes. Note that on amd64 a recent ld.so is needed to avoid random bus errors.

• lib/pixman/demos/trap-test.c

• #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include "pixman.h"
  #include "gtk-utils.h"
  
  int
  main (int argc, char **argv)
  {
  #define WIDTH 200
  #define HEIGHT 200
  
      pixman_image_t *src_img;
      pixman_image_t *mask_img;
      pixman_image_t *dest_img;
      pixman_trap_t trap;
      pixman_color_t white = { 0x0000, 0xffff, 0x0000, 0xffff };
      uint32_t *bits = malloc (WIDTH * HEIGHT * 4);
      uint32_t *mbits = malloc (WIDTH * HEIGHT);
  
      memset (mbits, 0, WIDTH * HEIGHT);
      memset (bits, 0xff, WIDTH * HEIGHT * 4);
      
      trap.top.l = pixman_int_to_fixed (50) + 0x8000;
      trap.top.r = pixman_int_to_fixed (150) + 0x8000;
      trap.top.y = pixman_int_to_fixed (30);
  
      trap.bot.l = pixman_int_to_fixed (50) + 0x8000;
      trap.bot.r = pixman_int_to_fixed (150) + 0x8000;
      trap.bot.y = pixman_int_to_fixed (150);
  
      mask_img = pixman_image_create_bits (PIXMAN_a8, WIDTH, HEIGHT, mbits, WIDTH);
      src_img = pixman_image_create_solid_fill (&white);
      dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8, WIDTH, HEIGHT, bits, WIDTH * 4);
      
      pixman_add_traps (mask_img, 0, 0, 1, &trap);
  
      pixman_image_composite (PIXMAN_OP_OVER,
  			    src_img, mask_img, dest_img,
  			    0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
      
      show_image (dest_img);
      
      pixman_image_unref (src_img);
      pixman_image_unref (dest_img);
      free (bits);
      
      return 0;
  }