mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-11-10 19:00:08 +00:00
315 lines
7.0 KiB
C
315 lines
7.0 KiB
C
#include <gdk/gdk.h>
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#include <gtk/gtk.h>
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#include <gdkx.h>
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#include <cairo-xlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <X11/extensions/shape.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/wait.h>
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#include <signal.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <locale.h>
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#include "widgets.h"
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#include "shadow.h"
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#define MAXIMUM_WM_REPARENTING_DEPTH 4
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#ifndef _
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#define _(x) (x)
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#endif
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static void queue_show (void);
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static Window
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find_toplevel_window (Window xid)
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{
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Window root, parent, *children;
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guint nchildren;
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do
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{
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if (XQueryTree (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), xid, &root,
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&parent, &children, &nchildren) == 0)
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{
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g_warning ("Couldn't find window manager window");
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return 0;
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}
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if (root == parent)
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return xid;
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xid = parent;
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}
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while (TRUE);
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}
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static GdkPixbuf *
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add_border_to_shot (GdkPixbuf *pixbuf)
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{
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GdkPixbuf *retval;
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GdkColorspace colorspace;
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int bits;
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colorspace = gdk_pixbuf_get_colorspace (pixbuf);
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bits = gdk_pixbuf_get_bits_per_sample (pixbuf);
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retval = gdk_pixbuf_new (colorspace, TRUE, bits,
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gdk_pixbuf_get_width (pixbuf) + 2,
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gdk_pixbuf_get_height (pixbuf) + 2);
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/* Fill with solid black */
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gdk_pixbuf_fill (retval, 0xFF);
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gdk_pixbuf_copy_area (pixbuf,
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0, 0,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf),
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retval, 1, 1);
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return retval;
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}
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static GdkPixbuf *
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remove_shaped_area (GdkPixbuf *pixbuf,
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Window window)
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{
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GdkPixbuf *retval;
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XRectangle *rectangles;
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int rectangle_count, rectangle_order;
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int i;
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GdkColorspace colorspace;
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int bits;
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colorspace = gdk_pixbuf_get_colorspace (pixbuf);
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bits = gdk_pixbuf_get_bits_per_sample (pixbuf);
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retval = gdk_pixbuf_new (colorspace, TRUE, bits,
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gdk_pixbuf_get_width (pixbuf),
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gdk_pixbuf_get_height (pixbuf));
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gdk_pixbuf_fill (retval, 0);
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rectangles = XShapeGetRectangles (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), window,
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ShapeBounding, &rectangle_count, &rectangle_order);
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for (i = 0; i < rectangle_count; i++)
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{
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int y, x;
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for (y = rectangles[i].y; y < rectangles[i].y + rectangles[i].height; y++)
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{
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guchar *src_pixels, *dest_pixels;
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src_pixels = gdk_pixbuf_get_pixels (pixbuf) +
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y * gdk_pixbuf_get_rowstride (pixbuf) +
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rectangles[i].x * (gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3);
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dest_pixels = gdk_pixbuf_get_pixels (retval) +
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y * gdk_pixbuf_get_rowstride (retval) +
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rectangles[i].x * 4;
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for (x = rectangles[i].x; x < rectangles[i].x + rectangles[i].width; x++)
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{
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*dest_pixels++ = *src_pixels ++;
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*dest_pixels++ = *src_pixels ++;
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*dest_pixels++ = *src_pixels ++;
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*dest_pixels++ = 255;
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if (gdk_pixbuf_get_has_alpha (pixbuf))
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src_pixels++;
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}
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}
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}
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return retval;
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}
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typedef enum {
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DECOR_NONE,
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DECOR_FRAME,
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DECOR_WINDOW_FRAME
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} DecorationType;
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static GdkPixbuf *
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take_window_shot (Window child,
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DecorationType decor)
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{
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cairo_surface_t *surface;
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XWindowAttributes attrs;
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Window xid;
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Display *dpy;
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gint x = 0, y = 0;
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gint width, height;
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GdkPixbuf *tmp, *tmp2;
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GdkPixbuf *retval = NULL;
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if (decor == DECOR_WINDOW_FRAME)
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xid = find_toplevel_window (child);
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else
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xid = child;
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dpy = gdk_x11_display_get_xdisplay (gdk_display_get_default ());
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XGetWindowAttributes (dpy, xid, &attrs);
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width = attrs.width;
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height = attrs.height;
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if (attrs.x < 0)
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{
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x = - attrs.x;
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width = width + attrs.x;
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}
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if (attrs.y < 0)
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{
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y = - attrs.y;
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height = height + attrs.y;
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}
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if (attrs.x + x + width > WidthOfScreen (DefaultScreenOfDisplay (dpy)))
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width = WidthOfScreen (DefaultScreenOfDisplay (dpy)) - attrs.x - x;
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if (attrs.y + y + height > HeightOfScreen (DefaultScreenOfDisplay (dpy)))
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height = HeightOfScreen (DefaultScreenOfDisplay (dpy)) - attrs.y - y;
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surface = cairo_xlib_surface_create (dpy,
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xid,
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attrs.visual,
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attrs.width,
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attrs.height);
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tmp = gdk_pixbuf_get_from_surface (surface,
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x, y,
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width, height);
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cairo_surface_destroy (surface);
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if (tmp != NULL)
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{
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if (decor == DECOR_WINDOW_FRAME)
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tmp2 = remove_shaped_area (tmp, xid);
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else if (decor == DECOR_FRAME)
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tmp2 = add_border_to_shot (tmp);
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else
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tmp2 = g_object_ref (tmp);
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g_object_unref (tmp);
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if (tmp2 != NULL)
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{
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retval = create_shadowed_pixbuf (tmp2);
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g_object_unref (tmp2);
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}
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}
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return retval;
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}
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static GList *toplevels;
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static guint shot_id;
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static gboolean
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window_is_csd (GdkWindow *window)
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{
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gboolean set;
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GdkWMDecoration decorations = 0;
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/* FIXME: is this accurate? */
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set = gdk_window_get_decorations (window, &decorations);
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return (set && (decorations == 0));
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}
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static gboolean
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shoot_one (WidgetInfo *info)
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{
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GdkWindow *window;
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XID id;
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GdkPixbuf *screenshot = NULL;
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DecorationType decor = DECOR_FRAME;
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if (g_list_find (toplevels, info) == NULL)
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{
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g_warning ("Widget not found in queue");
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gtk_main_quit ();
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}
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window = gtk_widget_get_window (info->window);
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id = gdk_x11_window_get_xid (window);
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if (window_is_csd (window))
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decor = (info->include_decorations) ? DECOR_NONE : DECOR_WINDOW_FRAME;
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screenshot = take_window_shot (id, decor);
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if (screenshot != NULL)
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{
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char *filename;
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filename = g_strdup_printf ("./%s.png", info->name);
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gdk_pixbuf_save (screenshot, filename, "png", NULL, NULL);
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g_free (filename);
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g_object_unref (screenshot);
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}
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else
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{
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g_warning ("unable to save shot of %s", info->name);
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}
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gtk_widget_destroy (info->window);
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shot_id = 0;
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/* remove from the queue and try to load up another */
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toplevels = g_list_remove (toplevels, info);
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if (toplevels == NULL)
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gtk_main_quit ();
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else
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queue_show ();
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return G_SOURCE_REMOVE;
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}
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static void
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on_show (WidgetInfo *info)
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{
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if (shot_id != 0)
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return;
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shot_id = g_timeout_add (500, (GSourceFunc) shoot_one, info);
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}
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static gboolean
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show_one (void)
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{
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WidgetInfo *info = toplevels->data;
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g_message ("shooting %s", info->name);
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g_signal_connect_swapped (info->window,
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"show",
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G_CALLBACK (on_show),
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info);
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gtk_widget_show (info->window);
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return G_SOURCE_REMOVE;
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}
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static void
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queue_show (void)
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{
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g_idle_add ((GSourceFunc) show_one, NULL);
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}
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int main (int argc, char **argv)
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{
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/* If there's no DISPLAY, we silently error out. We don't want to break
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* headless builds. */
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if (! gtk_init_check ())
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return 0;
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toplevels = get_all_widgets ();
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queue_show ();
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gtk_main ();
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return 0;
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}
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