Attachment 51530 Details for Bug 41133 – Test program

Test program

bug.c (text/plain), 2.75 KB, created by Rui Tiago Matos on 2011-09-22 16:00:35 UTC

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Creator: Rui Tiago Matos

Created: 2011-09-22 16:00:35 UTC

Size: 2.75 KB

patch

obsolete

>/*
> * Compile with:
> *      cc `pkg-config --cflags --libs gtk+-3.0` bug.c -o bug
> */
>#include <stdlib.h>
>#include <gtk/gtk.h>
>
>void
>dump (cairo_surface_t *surface,
>      char            *path)
>{
>  if (cairo_surface_write_to_png (surface, path) == CAIRO_STATUS_WRITE_ERROR)
>    printf ("error writing to %s\n", path);
>}
>
>void
>draw_checkerboard (cairo_surface_t *surface)
>{
>  cairo_t *cr;
>  int i, j;
>
>  cr = cairo_create (surface);
>
>  cairo_set_source_rgb (cr, 0, 0, 0);
>  cairo_rectangle (cr, 0, 0, 10, 10);
>  cairo_fill (cr);
>
>  cairo_set_source_rgb (cr, 1, 1, 1);
>
>  for (i = 0; i < 10; ++i)
>    for (j = 0; j < 10; ++j)
>      if ((i % 2) == (j % 2))
>        {
>          cairo_rectangle (cr, i, j, 1, 1);
>          cairo_fill (cr);
>        }
>
>  cairo_destroy (cr);
>}
>
>void
>draw (cairo_t *cr)
>{
>  cairo_surface_t *surface, *pat_surface;
>  cairo_pattern_t *pattern;
>  cairo_matrix_t _matrix;
>  cairo_matrix_t *matrix = &_matrix;
>
>  surface = cairo_get_target (cr);
>  surface = cairo_surface_create_similar (surface, CAIRO_CONTENT_COLOR, 10, 10);
>
>  draw_checkerboard (surface);
>
>  pat_surface = cairo_surface_create_for_rectangle (surface, 0, 0, 2, 2);
>
>  cairo_matrix_init_identity (matrix);
>  cairo_matrix_scale (matrix, 1 / 50., 1 / 50.);
>
>  pattern = cairo_pattern_create_for_surface (pat_surface);
>  cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
>  cairo_pattern_set_matrix (pattern, matrix);
>
>  cairo_set_source (cr, pattern);
>  cairo_rectangle (cr, 0, 0, 100, 100);
>  cairo_fill (cr);
>
>  cairo_pattern_destroy (pattern);
>  cairo_surface_destroy (pat_surface);
>  cairo_surface_destroy (surface);
>}
>
>void
>image (char *path)
>{
>  cairo_surface_t *surface = NULL;
>  cairo_t *cr = NULL;
>
>  surface = cairo_image_surface_create (CAIRO_FORMAT_RGB24, 100, 100);
>  cr = cairo_create (surface);
>
>  draw (cr);
>  dump (surface, path);
>
>  cairo_destroy (cr);
>  cairo_surface_destroy (surface);
>}
>
>gboolean
>window_draw (GtkWidget *widget,
>             cairo_t   *cr,
>             gpointer   path)
>{
>  draw (cr);
>  dump (cairo_get_target (cr), (char *)path);
>
>  g_idle_add ((GSourceFunc)gtk_main_quit, NULL);
>
>  return FALSE;
>}
>
>void
>xlib (char *path)
>{
>  GtkWidget *window = NULL;
>
>  gtk_init (NULL, NULL);
>  window = gtk_window_new (GTK_WINDOW_POPUP);
>  gtk_widget_set_size_request (window, 100, 100);
>
>  g_signal_connect (G_OBJECT (window), "draw",
>                    G_CALLBACK (window_draw), path);
>
>  gtk_widget_show (window);
>
>  gtk_main ();
>
>  gtk_widget_destroy (window);
>}
>
>void
>usage (char *s)
>{
>  printf ("usage: %s <image|xlib> <output_path>\n", s);
>  exit (1);
>}
>
>int
>main (int argc, char **argv)
>{
>  if (argc != 3)
>    usage (argv[0]);
>
>  if (g_str_equal (argv[1], "image"))
>    image (argv[2]);
>  else if (g_str_equal (argv[1], "xlib"))
>    xlib (argv[2]);
>  else
>    usage (argv[0]);
>
>  return 0;
>}

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Attachments on bug 41133: 51530

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