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authorSøren Sandmann <sandmann@redhat.com>2007-05-09 18:10:30 -0400
committerSøren Sandmann <sandmann@redhat.com>2007-05-09 18:10:30 -0400
commit0ebb7e31db85a179afdcd731fcc6b0e311084cb1 (patch)
treed11ea3f898b7cd76fc761acd80ea81042076a7f3 /test/gradient-test.c
parentdd670c29bf1de3e951f936dba834e4bfe07a9bd4 (diff)
Remove AM_MAINTAINER_MODE ; add new gradient-test
Diffstat (limited to 'test/gradient-test.c')
-rw-r--r--test/gradient-test.c114
1 files changed, 114 insertions, 0 deletions
diff --git a/test/gradient-test.c b/test/gradient-test.c
new file mode 100644
index 00000000..4501ea7d
--- /dev/null
+++ b/test/gradient-test.c
@@ -0,0 +1,114 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <pixman/pixman.h>
+#include <gtk/gtk.h>
+
+GdkPixbuf *
+pixbuf_from_argb32 (uint32_t *bits,
+ int width,
+ int height,
+ int stride)
+{
+ GdkPixbuf *pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE,
+ 8, width, height);
+ int p_stride = gdk_pixbuf_get_rowstride (pixbuf);
+ guint32 *p_bits = (guint32 *)gdk_pixbuf_get_pixels (pixbuf);
+ int w, h;
+
+ for (h = 0; h < height; ++h)
+ {
+ for (w = 0; w < width; ++w)
+ {
+ uint32_t argb = bits[h * stride + w];
+ guint32 abgr;
+
+ abgr = (argb & 0xff000000) |
+ (argb & 0xff) << 16 |
+ (argb & 0x00ff00) |
+ (argb & 0xff0000) >> 16;
+
+ p_bits[h * (p_stride / 4) + w] = abgr;
+ }
+ }
+
+ return pixbuf;
+}
+
+static gboolean
+on_expose (GtkWidget *widget, GdkEventExpose *expose, gpointer data)
+{
+ GdkPixbuf *pixbuf = data;
+
+ gdk_draw_pixbuf (widget->window, NULL,
+ pixbuf, 0, 0, 0, 0,
+ gdk_pixbuf_get_width (pixbuf),
+ gdk_pixbuf_get_height (pixbuf),
+ GDK_RGB_DITHER_NONE,
+ 0, 0);
+
+ return TRUE;
+}
+
+static void
+show_window (uint32_t *bits, int w, int h, int stride)
+{
+ GdkPixbuf *pixbuf;
+
+ GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+
+ pixbuf = pixbuf_from_argb32 (bits, w, h, stride);
+
+ g_signal_connect (window, "expose_event", G_CALLBACK (on_expose), pixbuf);
+
+ gtk_widget_show (window);
+
+ gtk_main ();
+}
+
+int
+main (int argc, char **argv)
+{
+#define WIDTH 100
+#define HEIGHT 100
+
+ uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
+ pixman_image_t *src_img;
+ pixman_image_t *dest_img;
+ int i;
+ pixman_gradient_stop_t stops[2] =
+ {
+ { 0.0, { 0xffff, 0x0000, 0x0000, 0xffff } },
+ { 1.0, { 0xffff, 0xffff, 0x0000, 0xffff } }
+ };
+ pixman_point_fixed_t p1 = { 0, 0 };
+ pixman_point_fixed_t p2 = { pixman_int_to_fixed (WIDTH),
+ pixman_int_to_fixed (HEIGHT) };
+
+ gtk_init (&argc, &argv);
+
+ for (i = 0; i < WIDTH * HEIGHT; ++i)
+ dest[i] = 0x3f0000ff; /* pale blue */
+
+ dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
+ WIDTH, HEIGHT,
+ dest,
+ WIDTH * 4);
+
+ src_img = pixman_image_create_linear_gradient (&p1, &p2,
+ stops, 2);
+
+ pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dest_img,
+ 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
+
+ printf ("0, 0: %x\n", dest[0]);
+ printf ("10, 10: %x\n", dest[10 * 10 + 10]);
+ printf ("w, h: %x\n", dest[(HEIGHT - 1) * 100 + (WIDTH - 1)]);
+
+ show_window (dest, WIDTH, HEIGHT, WIDTH);
+
+ pixman_image_unref (src_img);
+ pixman_image_unref (dest_img);
+ free (dest);
+
+ return 0;
+}