gtk/docs/tools/shooter.c

236 lines
5.1 KiB
C
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#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <gdkx.h>
#include <stdio.h>
#include <errno.h>
#include <sys/wait.h>
#include <unistd.h>
#include <X11/extensions/shape.h>
#include <gdk-pixbuf/gdk-pixbuf.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <signal.h>
#include <unistd.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#include <locale.h>
#include "widgets.h"
#include "shadow.h"
#define MAXIMUM_WM_REPARENTING_DEPTH 4
#ifndef _
#define _(x) (x)
#endif
static Window
find_toplevel_window (Window xid)
{
Window root, parent, *children;
guint nchildren;
do
{
if (XQueryTree (GDK_DISPLAY (), xid, &root,
&parent, &children, &nchildren) == 0)
{
g_warning ("Couldn't find window manager window");
return 0;
}
if (root == parent)
return xid;
xid = parent;
}
while (TRUE);
}
static GdkPixbuf *
add_border_to_shot (GdkPixbuf *pixbuf)
{
GdkPixbuf *retval;
retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
gdk_pixbuf_get_width (pixbuf) + 2,
gdk_pixbuf_get_height (pixbuf) + 2);
/* Fill with solid black */
gdk_pixbuf_fill (retval, 0xFF);
gdk_pixbuf_copy_area (pixbuf,
0, 0,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf),
retval, 1, 1);
return retval;
}
static GdkPixbuf *
remove_shaped_area (GdkPixbuf *pixbuf,
Window window)
{
GdkPixbuf *retval;
XRectangle *rectangles;
int rectangle_count, rectangle_order;
int i;
retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
gdk_pixbuf_get_width (pixbuf),
gdk_pixbuf_get_height (pixbuf));
gdk_pixbuf_fill (retval, 0);
rectangles = XShapeGetRectangles (GDK_DISPLAY (), window,
ShapeBounding, &rectangle_count, &rectangle_order);
for (i = 0; i < rectangle_count; i++)
{
int y, x;
for (y = rectangles[i].y; y < rectangles[i].y + rectangles[i].height; y++)
{
guchar *src_pixels, *dest_pixels;
src_pixels = gdk_pixbuf_get_pixels (pixbuf) +
y * gdk_pixbuf_get_rowstride (pixbuf) +
rectangles[i].x * (gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3);
dest_pixels = gdk_pixbuf_get_pixels (retval) +
y * gdk_pixbuf_get_rowstride (retval) +
rectangles[i].x * 4;
for (x = rectangles[i].x; x < rectangles[i].x + rectangles[i].width; x++)
{
*dest_pixels++ = *src_pixels ++;
*dest_pixels++ = *src_pixels ++;
*dest_pixels++ = *src_pixels ++;
*dest_pixels++ = 255;
if (gdk_pixbuf_get_has_alpha (pixbuf))
src_pixels++;
}
}
}
return retval;
}
static GdkPixbuf *
take_window_shot (Window child,
gboolean include_decoration)
{
GdkWindow *window;
Display *disp;
Window w, xid;
gint x_orig, y_orig;
gint x = 0, y = 0;
gint width, height;
GdkPixbuf *tmp, *tmp2;
GdkPixbuf *retval;
disp = GDK_DISPLAY ();
w = GDK_ROOT_WINDOW ();
if (include_decoration)
xid = find_toplevel_window (child);
else
xid = child;
window = gdk_window_foreign_new (xid);
gdk_drawable_get_size (window, &width, &height);
gdk_window_get_origin (window, &x_orig, &y_orig);
if (x_orig < 0)
{
x = - x_orig;
width = width + x_orig;
x_orig = 0;
}
if (y_orig < 0)
{
y = - y_orig;
height = height + y_orig;
y_orig = 0;
}
if (x_orig + width > gdk_screen_width ())
width = gdk_screen_width () - x_orig;
if (y_orig + height > gdk_screen_height ())
height = gdk_screen_height () - y_orig;
tmp = gdk_pixbuf_get_from_drawable (NULL, window, NULL,
x, y, 0, 0, width, height);
if (include_decoration)
tmp2 = remove_shaped_area (tmp, xid);
else
tmp2 = add_border_to_shot (tmp);
retval = create_shadowed_pixbuf (tmp2);
g_object_unref (tmp);
g_object_unref (tmp2);
return retval;
}
int main (int argc, char **argv)
{
GList *toplevels;
GdkPixbuf *screenshot = NULL;
GList *node;
/* If there's no DISPLAY, we silently error out. We don't want to break
* headless builds. */
if (! gtk_init_check (&argc, &argv))
return 0;
toplevels = get_all_widgets ();
for (node = toplevels; node; node = g_list_next (node))
{
GtkAllocation allocation;
GdkWindow *window;
WidgetInfo *info;
XID id;
char *filename;
info = node->data;
gtk_widget_show (info->window);
window = gtk_widget_get_window (info->window);
gtk_widget_get_allocation (info->window, &allocation);
gtk_widget_show_now (info->window);
gtk_widget_queue_draw_area (info->window,
allocation.x, allocation.y,
allocation.width, allocation.height);
gdk_window_process_updates (window, TRUE);
while (gtk_events_pending ())
{
gtk_main_iteration ();
}
sleep (1);
while (gtk_events_pending ())
{
gtk_main_iteration ();
}
id = gdk_x11_drawable_get_xid (GDK_DRAWABLE (window));
screenshot = take_window_shot (id, info->include_decorations);
filename = g_strdup_printf ("./%s.png", info->name);
gdk_pixbuf_save (screenshot, filename, "png", NULL, NULL);
g_free(filename);
gtk_widget_hide (info->window);
}
return 0;
}