109 lines
2.7 KiB
C
109 lines
2.7 KiB
C
#include <gtk/gtk.h>
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#include <config.h>
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#include "../test/utils.h"
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#include "gtk-utils.h"
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GdkPixbuf *
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pixbuf_from_argb32 (uint32_t *bits,
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int width,
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int height,
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int stride)
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{
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GdkPixbuf *pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE,
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8, width, height);
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int p_stride = gdk_pixbuf_get_rowstride (pixbuf);
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guint32 *p_bits = (guint32 *)gdk_pixbuf_get_pixels (pixbuf);
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int i;
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for (i = 0; i < height; ++i)
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{
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uint32_t *src_row = &bits[i * (stride / 4)];
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uint32_t *dst_row = p_bits + i * (p_stride / 4);
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a8r8g8b8_to_rgba_np (dst_row, src_row, width);
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}
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return pixbuf;
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}
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static gboolean
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on_expose (GtkWidget *widget, GdkEventExpose *expose, gpointer data)
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{
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GdkPixbuf *pixbuf = data;
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gdk_draw_pixbuf (widget->window, NULL,
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pixbuf, 0, 0, 0, 0,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf),
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GDK_RGB_DITHER_NONE,
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0, 0);
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return TRUE;
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}
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void
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show_image (pixman_image_t *image)
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{
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GtkWidget *window;
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GdkPixbuf *pixbuf;
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int width, height;
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int argc;
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char **argv;
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char *arg0 = g_strdup ("pixman-test-program");
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pixman_format_code_t format;
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pixman_image_t *copy;
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argc = 1;
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argv = (char **)&arg0;
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gtk_init (&argc, &argv);
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window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
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width = pixman_image_get_width (image);
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height = pixman_image_get_height (image);
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gtk_window_set_default_size (GTK_WINDOW (window), width, height);
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format = pixman_image_get_format (image);
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/* Three cases:
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*
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* - image is a8r8g8b8_sRGB: we will display without modification
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* under the assumption that the monitor is sRGB
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*
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* - image is a8r8g8b8: we will display without modification
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* under the assumption that whoever created the image
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* probably did it wrong by using sRGB inputs
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*
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* - other: we will convert to a8r8g8b8 under the assumption that
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* whoever created the image probably did it wrong.
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*/
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switch (format)
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{
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case PIXMAN_a8r8g8b8_sRGB:
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case PIXMAN_a8r8g8b8:
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copy = pixman_image_ref (image);
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break;
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default:
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copy = pixman_image_create_bits (PIXMAN_a8r8g8b8,
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width, height, NULL, -1);
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pixman_image_composite32 (PIXMAN_OP_SRC,
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image, NULL, copy,
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0, 0, 0, 0, 0, 0,
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width, height);
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break;
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}
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pixbuf = pixbuf_from_argb32 (pixman_image_get_data (copy),
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width, height,
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pixman_image_get_stride (copy));
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g_signal_connect (window, "expose_event", G_CALLBACK (on_expose), pixbuf);
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g_signal_connect (window, "delete_event", G_CALLBACK (gtk_main_quit), NULL);
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gtk_widget_show (window);
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gtk_main ();
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}
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