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#include <gtk/gtk.h>
#include <stdlib.h>
#include <stdio.h>
#include "pixman.h"
#include "utils.h"
#define WIDTH 60
#define HEIGHT 60
typedef struct {
const char *name;
pixman_op_t op;
} operator_t;
static const operator_t operators[] = {
{ "CLEAR", PIXMAN_OP_CLEAR },
{ "SRC", PIXMAN_OP_SRC },
{ "DST", PIXMAN_OP_DST },
{ "OVER", PIXMAN_OP_OVER },
{ "OVER_REVERSE", PIXMAN_OP_OVER_REVERSE },
{ "IN", PIXMAN_OP_IN },
{ "IN_REVERSE", PIXMAN_OP_IN_REVERSE },
{ "OUT", PIXMAN_OP_OUT },
{ "OUT_REVERSE", PIXMAN_OP_OUT_REVERSE },
{ "ATOP", PIXMAN_OP_ATOP },
{ "ATOP_REVERSE", PIXMAN_OP_ATOP_REVERSE },
{ "XOR", PIXMAN_OP_XOR },
{ "ADD", PIXMAN_OP_ADD },
{ "SATURATE", PIXMAN_OP_SATURATE },
{ "MULTIPLY", PIXMAN_OP_MULTIPLY },
{ "SCREEN", PIXMAN_OP_SCREEN },
{ "OVERLAY", PIXMAN_OP_OVERLAY },
{ "DARKEN", PIXMAN_OP_DARKEN },
{ "LIGHTEN", PIXMAN_OP_LIGHTEN },
{ "COLOR_DODGE", PIXMAN_OP_COLOR_DODGE },
{ "COLOR_BURN", PIXMAN_OP_COLOR_BURN },
{ "HARD_LIGHT", PIXMAN_OP_HARD_LIGHT },
{ "SOFT_LIGHT", PIXMAN_OP_SOFT_LIGHT },
{ "DIFFERENCE", PIXMAN_OP_DIFFERENCE },
{ "EXCLUSION", PIXMAN_OP_EXCLUSION },
{ "HSL_HUE", PIXMAN_OP_HSL_HUE },
{ "HSL_SATURATION", PIXMAN_OP_HSL_SATURATION },
{ "HSL_COLOR", PIXMAN_OP_HSL_COLOR },
{ "HSL_LUMINOSITY", PIXMAN_OP_HSL_LUMINOSITY },
};
static uint32_t
reader (const void *src, int size)
{
switch (size)
{
case 1:
return *(uint8_t *)src;
case 2:
return *(uint16_t *)src;
case 4:
return *(uint32_t *)src;
default:
g_assert_not_reached();
}
}
static void
writer (void *src, uint32_t value, int size)
{
switch (size)
{
case 1:
*(uint8_t *)src = value;
break;
case 2:
*(uint16_t *)src = value;
break;
case 4:
*(uint32_t *)src = value;
break;
}
}
int
main (int argc, char **argv)
{
#define d2f pixman_double_to_fixed
GtkWidget *window, *swindow;
GtkWidget *table;
uint32_t *dest = malloc (WIDTH * HEIGHT * 4);
uint32_t *src = malloc (WIDTH * HEIGHT * 4);
pixman_image_t *src_img;
pixman_image_t *dest_img;
pixman_point_fixed_t p1 = { -10 << 0, 0 };
pixman_point_fixed_t p2 = { WIDTH << 16, (HEIGHT - 10) << 16 };
uint16_t full = 0xcfff;
uint16_t low = 0x5000;
uint16_t alpha = 0xffff;
pixman_gradient_stop_t stops[6] =
{
{ d2f (0.0), { full, low, low, alpha } },
{ d2f (0.25), { full, full, low, alpha } },
{ d2f (0.4), { low, full, low, alpha } },
{ d2f (0.5), { low, full, full, alpha } },
{ d2f (0.8), { low, low, full, alpha } },
{ d2f (1.0), { full, low, full, alpha } },
};
int i;
gtk_init (&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size (window, 800, 600);
g_signal_connect (window, "delete-event",
G_CALLBACK (gtk_main_quit),
NULL);
table = gtk_table_new (G_N_ELEMENTS (operators) / 6, 6, TRUE);
src_img = pixman_image_create_linear_gradient (&p1, &p2, stops,
sizeof (stops) / sizeof (stops[0]));
pixman_image_set_repeat (src_img, PIXMAN_REPEAT_PAD);
dest_img = pixman_image_create_bits (PIXMAN_a8r8g8b8,
WIDTH, HEIGHT,
dest,
WIDTH * 4);
pixman_image_set_accessors (dest_img, reader, writer);
for (i = 0; i < G_N_ELEMENTS (operators); ++i)
{
GtkWidget *image;
GdkPixbuf *pixbuf;
GtkWidget *vbox;
GtkWidget *label;
int j, k;
vbox = gtk_vbox_new (FALSE, 0);
label = gtk_label_new (operators[i].name);
gtk_box_pack_start (GTK_BOX (vbox), label, FALSE, FALSE, 6);
gtk_widget_show (label);
for (j = 0; j < HEIGHT; ++j)
{
for (k = 0; k < WIDTH; ++k)
dest[j * WIDTH + k] = 0x7f6f6f00;
}
pixman_image_composite (operators[i].op, src_img, NULL, dest_img,
0, 0, 0, 0, 0, 0, WIDTH, HEIGHT);
pixbuf = pixbuf_from_argb32 (pixman_image_get_data (dest_img), TRUE,
WIDTH, HEIGHT, WIDTH * 4);
image = gtk_image_new_from_pixbuf (pixbuf);
gtk_box_pack_start (GTK_BOX (vbox), image, FALSE, FALSE, 0);
gtk_widget_show (image);
gtk_table_attach_defaults (GTK_TABLE (table), vbox,
i % 6, (i % 6) + 1, i / 6, (i / 6) + 1);
gtk_widget_show (vbox);
g_object_unref (pixbuf);
}
pixman_image_unref (src_img);
free (src);
pixman_image_unref (dest_img);
free (dest);
swindow = gtk_scrolled_window_new (NULL, NULL);
gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
GTK_POLICY_AUTOMATIC,
GTK_POLICY_AUTOMATIC);
gtk_scrolled_window_add_with_viewport (GTK_SCROLLED_WINDOW (swindow), table);
gtk_widget_show (table);
gtk_container_add (GTK_CONTAINER (window), swindow);
gtk_widget_show (swindow);
gtk_widget_show (window);
gtk_main ();
return 0;
}
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