diff options
Diffstat (limited to 'pixman/test/clip-test.c')
| -rw-r--r-- | pixman/test/clip-test.c | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/pixman/test/clip-test.c b/pixman/test/clip-test.c new file mode 100644 index 000000000..457e97a2b --- /dev/null +++ b/pixman/test/clip-test.c @@ -0,0 +1,159 @@ +#include <stdio.h> +#include <stdlib.h> +#include <gtk/gtk.h> +#include "pixman.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 (pixman_image_t *img, int w, int h, int stride) +{ + GdkPixbuf *pixbuf; + + GtkWidget *window = gtk_window_new (GTK_WINDOW_TOPLEVEL); + + pixbuf = pixbuf_from_argb32 (pixman_image_get_data (img), w, h, stride); + + g_signal_connect (window, "expose_event", G_CALLBACK (on_expose), pixbuf); + g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL); + + gtk_widget_show (window); + + gtk_main (); +} + +#define WIDTH 200 +#define HEIGHT 200 + +static pixman_image_t * +create_solid_bits (uint32_t pixel) +{ + uint32_t *pixels = malloc (WIDTH * HEIGHT * 4); + int i; + + for (i = 0; i < WIDTH * HEIGHT; ++i) + pixels[i] = pixel; + + return pixman_image_create_bits (PIXMAN_a8r8g8b8, + WIDTH, HEIGHT, + pixels, + WIDTH * 4); +} + +int +main (int argc, char **argv) +{ + pixman_image_t *gradient_img; + pixman_image_t *src_img, *dst_img; + pixman_gradient_stop_t stops[2] = + { + { pixman_int_to_fixed (0), { 0xffff, 0x0000, 0x0000, 0xffff } }, + { pixman_int_to_fixed (1), { 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) }; + pixman_point_fixed_t c_inner; + pixman_point_fixed_t c_outer; + pixman_fixed_t r_inner; + pixman_fixed_t r_outer; + pixman_region32_t clip_region; + pixman_transform_t trans = { + { { pixman_double_to_fixed (1.3), pixman_double_to_fixed (0), pixman_double_to_fixed (-0.5), }, + { pixman_double_to_fixed (0), pixman_double_to_fixed (1), pixman_double_to_fixed (-0.5), }, + { pixman_double_to_fixed (0), pixman_double_to_fixed (0), pixman_double_to_fixed (1.0) } + } + }; + + gtk_init (&argc, &argv); + + src_img = create_solid_bits (0xff0000ff); + + c_inner.x = pixman_double_to_fixed (100.0); + c_inner.y = pixman_double_to_fixed (100.0); + c_outer.x = pixman_double_to_fixed (100.0); + c_outer.y = pixman_double_to_fixed (100.0); + r_inner = 0; + r_outer = pixman_double_to_fixed (100.0); + + gradient_img = pixman_image_create_radial_gradient (&c_inner, &c_outer, + r_inner, r_outer, + stops, 2); + +#if 0 + gradient_img = pixman_image_create_linear_gradient (&p1, &p2, + stops, 2); + +#endif + + pixman_image_composite (PIXMAN_OP_OVER, gradient_img, NULL, src_img, + 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT); + + pixman_region32_init_rect (&clip_region, 50, 0, 100, 200); + pixman_image_set_clip_region32 (src_img, &clip_region); + pixman_image_set_source_clipping (src_img, TRUE); + pixman_image_set_transform (src_img, &trans); + pixman_image_set_repeat (src_img, PIXMAN_REPEAT_NORMAL); + + dst_img = create_solid_bits (0xffff0000); + pixman_image_composite (PIXMAN_OP_OVER, src_img, NULL, dst_img, + 0, 0, 0, 0, 0, 0, WIDTH, HEIGHT); + + +#if 0 + printf ("0, 0: %x\n", src[0]); + printf ("10, 10: %x\n", src[10 * 10 + 10]); + printf ("w, h: %x\n", src[(HEIGHT - 1) * 100 + (WIDTH - 1)]); +#endif + + show_window (dst_img, WIDTH, HEIGHT, WIDTH); + + pixman_image_unref (gradient_img); + pixman_image_unref (src_img); + + return 0; +} |