mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-30 15:31:34 +00:00
390 lines
14 KiB
C
390 lines
14 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
|
|
|
|
#include "config.h"
|
|
#include <stdio.h>
|
|
|
|
#include <gtk/gtk.h>
|
|
|
|
static void
|
|
compare_pixbufs (GdkPixbuf *pixbuf, GdkPixbuf *compare, const gchar *file_type)
|
|
{
|
|
if ((gdk_pixbuf_get_width (pixbuf) !=
|
|
gdk_pixbuf_get_width (compare)) ||
|
|
(gdk_pixbuf_get_height (pixbuf) !=
|
|
gdk_pixbuf_get_height (compare)) ||
|
|
(gdk_pixbuf_get_n_channels (pixbuf) !=
|
|
gdk_pixbuf_get_n_channels (compare)) ||
|
|
(gdk_pixbuf_get_has_alpha (pixbuf) !=
|
|
gdk_pixbuf_get_has_alpha (compare)) ||
|
|
(gdk_pixbuf_get_bits_per_sample (pixbuf) !=
|
|
gdk_pixbuf_get_bits_per_sample (compare))) {
|
|
fprintf (stderr,
|
|
"saved %s file differs from copy in memory\n",
|
|
file_type);
|
|
} else {
|
|
guchar *orig_pixels;
|
|
guchar *compare_pixels;
|
|
gint orig_rowstride;
|
|
gint compare_rowstride;
|
|
gint width;
|
|
gint height;
|
|
gint bytes_per_pixel;
|
|
gint x, y;
|
|
guchar *p1, *p2;
|
|
gint count = 0;
|
|
|
|
orig_pixels = gdk_pixbuf_get_pixels (pixbuf);
|
|
compare_pixels = gdk_pixbuf_get_pixels (compare);
|
|
|
|
orig_rowstride = gdk_pixbuf_get_rowstride (pixbuf);
|
|
compare_rowstride = gdk_pixbuf_get_rowstride (compare);
|
|
|
|
width = gdk_pixbuf_get_width (pixbuf);
|
|
height = gdk_pixbuf_get_height (pixbuf);
|
|
|
|
/* well... */
|
|
bytes_per_pixel = gdk_pixbuf_get_n_channels (pixbuf);
|
|
|
|
p1 = orig_pixels;
|
|
p2 = compare_pixels;
|
|
|
|
for (y = 0; y < height; y++) {
|
|
for (x = 0; x < width * bytes_per_pixel; x++)
|
|
count += (*p1++ != *p2++);
|
|
|
|
orig_pixels += orig_rowstride;
|
|
compare_pixels += compare_rowstride;
|
|
|
|
p1 = orig_pixels;
|
|
p2 = compare_pixels;
|
|
}
|
|
|
|
if (count > 0) {
|
|
fprintf (stderr,
|
|
"saved %s file differs from copy in memory\n",
|
|
file_type);
|
|
}
|
|
}
|
|
}
|
|
|
|
static gboolean
|
|
save_to_loader (const gchar *buf, gsize count, GError **err, gpointer data)
|
|
{
|
|
GdkPixbufLoader *loader = data;
|
|
|
|
return gdk_pixbuf_loader_write (loader, (const guchar *)buf, count, err);
|
|
}
|
|
|
|
static GdkPixbuf *
|
|
buffer_to_pixbuf (const gchar *buf, gsize count, GError **err)
|
|
{
|
|
GdkPixbufLoader *loader;
|
|
GdkPixbuf *pixbuf;
|
|
|
|
loader = gdk_pixbuf_loader_new ();
|
|
if (gdk_pixbuf_loader_write (loader, (const guchar *)buf, count, err) &&
|
|
gdk_pixbuf_loader_close (loader, err)) {
|
|
pixbuf = g_object_ref (gdk_pixbuf_loader_get_pixbuf (loader));
|
|
g_object_unref (loader);
|
|
return pixbuf;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
static void
|
|
do_compare (GdkPixbuf *pixbuf, GdkPixbuf *compare, GError *err)
|
|
{
|
|
if (compare == NULL) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
compare_pixbufs (pixbuf, compare, "jpeg");
|
|
g_object_unref (compare);
|
|
}
|
|
}
|
|
|
|
static void
|
|
keypress_check (GtkWidget *widget, GdkEventKey *evt, gpointer data)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
GtkDrawingArea *da = (GtkDrawingArea*)data;
|
|
GError *err = NULL;
|
|
gchar *buffer;
|
|
gsize count;
|
|
GdkPixbufLoader *loader;
|
|
|
|
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (da), "pixbuf");
|
|
|
|
if (evt->keyval == 'q')
|
|
gtk_main_quit ();
|
|
|
|
if (evt->keyval == 's' && (evt->state & GDK_CONTROL_MASK)) {
|
|
/* save to callback */
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
loader = gdk_pixbuf_loader_new ();
|
|
if (!gdk_pixbuf_save_to_callback (pixbuf, save_to_loader, loader, "jpeg",
|
|
&err,
|
|
"quality", "100",
|
|
NULL) ||
|
|
!gdk_pixbuf_loader_close (loader, &err)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
g_object_ref (gdk_pixbuf_loader_get_pixbuf (loader)),
|
|
err);
|
|
g_object_unref (loader);
|
|
}
|
|
}
|
|
else if (evt->keyval == 'S') {
|
|
/* save to buffer */
|
|
if (!gdk_pixbuf_save_to_buffer (pixbuf, &buffer, &count, "jpeg",
|
|
&err,
|
|
"quality", "100",
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
buffer_to_pixbuf (buffer, count, &err),
|
|
err);
|
|
}
|
|
}
|
|
else if (evt->keyval == 's') {
|
|
/* save normally */
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
if (!gdk_pixbuf_save (pixbuf, "foo.jpg", "jpeg",
|
|
&err,
|
|
"quality", "100",
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
gdk_pixbuf_new_from_file ("foo.jpg", &err),
|
|
err);
|
|
}
|
|
}
|
|
|
|
if (evt->keyval == 'p' && (evt->state & GDK_CONTROL_MASK)) {
|
|
/* save to callback */
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
loader = gdk_pixbuf_loader_new ();
|
|
if (!gdk_pixbuf_save_to_callback (pixbuf, save_to_loader, loader, "png",
|
|
&err,
|
|
"tEXt::Software", "testpixbuf-save",
|
|
NULL)
|
|
|| !gdk_pixbuf_loader_close (loader, &err)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
g_object_ref (gdk_pixbuf_loader_get_pixbuf (loader)),
|
|
err);
|
|
g_object_unref (loader);
|
|
}
|
|
}
|
|
else if (evt->keyval == 'P') {
|
|
/* save to buffer */
|
|
if (!gdk_pixbuf_save_to_buffer (pixbuf, &buffer, &count, "png",
|
|
&err,
|
|
"tEXt::Software", "testpixbuf-save",
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
buffer_to_pixbuf (buffer, count, &err),
|
|
err);
|
|
}
|
|
}
|
|
else if (evt->keyval == 'p') {
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
if (!gdk_pixbuf_save (pixbuf, "foo.png", "png",
|
|
&err,
|
|
"tEXt::Software", "testpixbuf-save",
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare(pixbuf,
|
|
gdk_pixbuf_new_from_file ("foo.png", &err),
|
|
err);
|
|
}
|
|
}
|
|
|
|
if (evt->keyval == 'i' && (evt->state & GDK_CONTROL_MASK)) {
|
|
/* save to callback */
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
loader = gdk_pixbuf_loader_new ();
|
|
if (!gdk_pixbuf_save_to_callback (pixbuf, save_to_loader, loader, "ico",
|
|
&err,
|
|
NULL)
|
|
|| !gdk_pixbuf_loader_close (loader, &err)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
g_object_ref (gdk_pixbuf_loader_get_pixbuf (loader)),
|
|
err);
|
|
g_object_unref (loader);
|
|
}
|
|
}
|
|
else if (evt->keyval == 'I') {
|
|
/* save to buffer */
|
|
if (!gdk_pixbuf_save_to_buffer (pixbuf, &buffer, &count, "ico",
|
|
&err,
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare (pixbuf,
|
|
buffer_to_pixbuf (buffer, count, &err),
|
|
err);
|
|
}
|
|
}
|
|
else if (evt->keyval == 'i') {
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
}
|
|
|
|
if (!gdk_pixbuf_save (pixbuf, "foo.ico", "ico",
|
|
&err,
|
|
NULL)) {
|
|
fprintf (stderr, "%s", err->message);
|
|
g_error_free (err);
|
|
} else {
|
|
do_compare(pixbuf,
|
|
gdk_pixbuf_new_from_file ("foo.ico", &err),
|
|
err);
|
|
}
|
|
}
|
|
|
|
if (evt->keyval == 'a') {
|
|
if (pixbuf == NULL) {
|
|
fprintf (stderr, "PIXBUF NULL\n");
|
|
return;
|
|
} else {
|
|
GdkPixbuf *alpha_buf;
|
|
|
|
alpha_buf = gdk_pixbuf_add_alpha (pixbuf,
|
|
FALSE, 0, 0, 0);
|
|
|
|
g_object_set_data_full (G_OBJECT (da),
|
|
"pixbuf", alpha_buf,
|
|
(GDestroyNotify) g_object_unref);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
close_app (GtkWidget *widget, gpointer data)
|
|
{
|
|
gtk_main_quit ();
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
draw_cb (GtkWidget *drawing_area, cairo_t *cr, gpointer data)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
|
|
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area),
|
|
"pixbuf");
|
|
|
|
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
|
|
cairo_paint (cr);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static int
|
|
configure_cb (GtkWidget *drawing_area, GdkEventConfigure *evt, gpointer data)
|
|
{
|
|
GdkPixbuf *pixbuf;
|
|
|
|
pixbuf = (GdkPixbuf *) g_object_get_data (G_OBJECT (drawing_area),
|
|
"pixbuf");
|
|
|
|
g_print ("X:%d Y:%d\n", evt->width, evt->height);
|
|
if (evt->width != gdk_pixbuf_get_width (pixbuf) || evt->height != gdk_pixbuf_get_height (pixbuf)) {
|
|
GdkWindow *root;
|
|
GdkPixbuf *new_pixbuf;
|
|
|
|
root = gdk_get_default_root_window ();
|
|
new_pixbuf = gdk_pixbuf_get_from_window (root,
|
|
0, 0, evt->width, evt->height);
|
|
g_object_set_data_full (G_OBJECT (drawing_area), "pixbuf", new_pixbuf,
|
|
(GDestroyNotify) g_object_unref);
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
GdkWindow *root;
|
|
GtkWidget *window;
|
|
GtkWidget *vbox;
|
|
GtkWidget *drawing_area;
|
|
GdkPixbuf *pixbuf;
|
|
|
|
gtk_init (&argc, &argv);
|
|
|
|
root = gdk_get_default_root_window ();
|
|
pixbuf = gdk_pixbuf_get_from_window (root,
|
|
0, 0, 150, 160);
|
|
|
|
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
|
|
g_signal_connect (window, "delete_event",
|
|
G_CALLBACK (close_app), NULL);
|
|
g_signal_connect (window, "destroy",
|
|
G_CALLBACK (close_app), NULL);
|
|
|
|
vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
|
|
gtk_container_add (GTK_CONTAINER (window), vbox);
|
|
|
|
drawing_area = gtk_drawing_area_new ();
|
|
gtk_widget_set_size_request (GTK_WIDGET (drawing_area),
|
|
gdk_pixbuf_get_width (pixbuf),
|
|
gdk_pixbuf_get_height (pixbuf));
|
|
g_signal_connect (drawing_area, "draw",
|
|
G_CALLBACK (draw_cb), NULL);
|
|
|
|
g_signal_connect (drawing_area, "configure_event",
|
|
G_CALLBACK (configure_cb), NULL);
|
|
g_signal_connect (window, "key_press_event",
|
|
G_CALLBACK (keypress_check), drawing_area);
|
|
g_object_set_data_full (G_OBJECT (drawing_area), "pixbuf", pixbuf,
|
|
(GDestroyNotify) g_object_unref);
|
|
gtk_box_pack_start (GTK_BOX (vbox), drawing_area, TRUE, TRUE, 0);
|
|
|
|
gtk_widget_show_all (window);
|
|
gtk_main ();
|
|
return 0;
|
|
}
|