1 files changed, 1040 insertions, 0 deletions
diff --git a/mate-screenshot/src/screenshot-utils.c b/mate-screenshot/src/screenshot-utils.c
new file mode 100644
index 00000000..eaeeca28
--- /dev/null
+++ b/mate-screenshot/src/screenshot-utils.c
@@ -0,0 +1,1040 @@
+/* screenshot-utils.c - common functions for MATE Screenshot
+ *
+ * Copyright (C) 2001-2006 Jonathan Blandford <[email protected]>
+ * Copyright (C) 2008 Cosimo Cecchi <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program; if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ */
+
+#include "config.h"
+#include "screenshot-utils.h"
+
+#include <gdk/gdkkeysyms.h>
+#include <gtk/gtk.h>
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#ifdef HAVE_X11_EXTENSIONS_SHAPE_H
+#include <X11/extensions/shape.h>
+#endif
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+#define GdkRegion cairo_region_t
+#define gdk_region_new cairo_region_create
+#define gdk_region_destroy cairo_region_destroy
+#define gdk_region_rectangle cairo_region_create_rectangle
+#define gdk_region_offset cairo_region_translate
+#define gdk_region_intersect cairo_region_intersect
+#define gdk_region_subtract cairo_region_subtract
+#define gdk_region_union_with_rect cairo_region_union_rectangle
+#define gdk_cursor_unref g_object_unref
+#endif
+
+static GtkWidget *selection_window;
+
+#define SELECTION_NAME "_MATE_PANEL_SCREENSHOT"
+
+static char *
+get_utf8_property (GdkWindow *window,
+ GdkAtom atom)
+{
+ gboolean res;
+ GdkAtom utf8_string;
+ GdkAtom type;
+ int actual_format, actual_length;
+ guchar *data;
+ char *retval;
+
+ utf8_string = gdk_x11_xatom_to_atom (gdk_x11_get_xatom_by_name ("UTF8_STRING"));
+ res = gdk_property_get (window, atom, utf8_string,
+ 0, G_MAXLONG, FALSE,
+ &type,
+ &actual_format, &actual_length,
+ &data);
+ if (!res)
+ return NULL;
+
+ if (type != utf8_string || actual_format != 8 || actual_length == 0)
+ {
+ g_free (data);
+ return NULL;
+ }
+
+ if (!g_utf8_validate ((gchar *) data, actual_length, NULL))
+ {
+ char *atom_name = gdk_atom_name (atom);
+
+ g_warning ("Property `%s' (format: %d, length: %d) contained "
+ "invalid UTF-8",
+ atom_name,
+ actual_format,
+ actual_length);
+
+ g_free (atom_name);
+ g_free (data);
+
+ return NULL;
+ }
+
+ retval = g_strndup ((gchar *) data, actual_length);
+
+ g_free (data);
+
+ return retval;
+}
+
+/* To make sure there is only one screenshot taken at a time,
+ * (Imagine key repeat for the print screen key) we hold a selection
+ * until we are done taking the screenshot
+ */
+gboolean
+screenshot_grab_lock (void)
+{
+ GdkAtom selection_atom;
+ gboolean result = FALSE;
+
+ selection_atom = gdk_atom_intern (SELECTION_NAME, FALSE);
+ gdk_x11_grab_server ();
+
+ if (gdk_selection_owner_get (selection_atom) != NULL)
+ goto out;
+
+ selection_window = gtk_invisible_new ();
+ gtk_widget_show (selection_window);
+
+ if (!gtk_selection_owner_set (selection_window,
+ gdk_atom_intern (SELECTION_NAME, FALSE),
+ GDK_CURRENT_TIME))
+ {
+ gtk_widget_destroy (selection_window);
+ selection_window = NULL;
+ goto out;
+ }
+
+ result = TRUE;
+
+ out:
+ gdk_x11_ungrab_server ();
+ gdk_flush ();
+
+ return result;
+}
+
+void
+screenshot_release_lock (void)
+{
+ if (selection_window)
+ {
+ gtk_widget_destroy (selection_window);
+ selection_window = NULL;
+ }
+
+ gdk_flush ();
+}
+
+static GdkWindow *
+screenshot_find_active_window (void)
+{
+ GdkWindow *window;
+ GdkScreen *default_screen;
+
+ default_screen = gdk_screen_get_default ();
+ window = gdk_screen_get_active_window (default_screen);
+
+ return window;
+}
+
+static gboolean
+screenshot_window_is_desktop (GdkWindow *window)
+{
+ GdkWindow *root_window = gdk_get_default_root_window ();
+ GdkWindowTypeHint window_type_hint;
+
+ if (window == root_window)
+ return TRUE;
+
+ window_type_hint = gdk_window_get_type_hint (window);
+ if (window_type_hint == GDK_WINDOW_TYPE_HINT_DESKTOP)
+ return TRUE;
+
+ return FALSE;
+
+}
+
+#define MAXIMUM_WM_REPARENTING_DEPTH 4
+
+static GdkWindow *
+look_for_hint_helper (GdkWindow *window,
+ GdkAtom property,
+ int depth)
+{
+ gboolean res;
+ GdkAtom actual_type;
+ int actual_format, actual_length;
+ guchar *data;
+
+ res = gdk_property_get (window, property, GDK_NONE,
+ 0, 1, FALSE,
+ &actual_type,
+ &actual_format, &actual_length,
+ &data);
+
+ if (res == TRUE &&
+ data != NULL &&
+ actual_format == 32 &&
+ data[0] == 1)
+ {
+ g_free (data);
+
+ return window;
+ }
+
+ if (depth < MAXIMUM_WM_REPARENTING_DEPTH)
+ {
+ GList *children, *l;
+
+ children = gdk_window_get_children (window);
+ if (children != NULL)
+ {
+ for (l = children; l; l = l->next)
+ {
+ window = look_for_hint_helper (l->data, property, depth + 1);
+ if (window)
+ break;
+ }
+
+ g_list_free (children);
+
+ if (window)
+ return window;
+ }
+ }
+
+ return NULL;
+}
+
+static GdkWindow *
+look_for_hint (GdkWindow *window,
+ GdkAtom property)
+{
+ GdkWindow *retval;
+
+ retval = look_for_hint_helper (window, property, 0);
+
+ return retval;
+}
+
+GdkWindow *
+screenshot_find_current_window ()
+{
+ GdkWindow *current_window;
+
+ current_window = screenshot_find_active_window ();
+
+ /* If there's no active window, we fall back to returning the
+ * window that the cursor is in.
+ */
+ if (!current_window)
+ current_window = gdk_window_at_pointer (NULL, NULL);
+
+ if (current_window)
+ {
+ if (screenshot_window_is_desktop (current_window))
+ /* if the current window is the desktop (e.g. caja), we
+ * return NULL, as getting the whole screen makes more sense.
+ */
+ return NULL;
+
+ /* Once we have a window, we take the toplevel ancestor. */
+ current_window = gdk_window_get_toplevel (current_window);
+ }
+
+ return current_window;
+}
+
+typedef struct {
+ GdkRectangle rect;
+ gboolean button_pressed;
+ GtkWidget *window;
+} select_area_filter_data;
+
+static gboolean
+select_area_button_press (GtkWidget *window,
+ GdkEventButton *event,
+ select_area_filter_data *data)
+{
+ if (data->button_pressed)
+ return TRUE;
+
+ data->button_pressed = TRUE;
+ data->rect.x = event->x_root;
+ data->rect.y = event->y_root;
+
+ return TRUE;
+}
+
+static gboolean
+select_area_motion_notify (GtkWidget *window,
+ GdkEventMotion *event,
+ select_area_filter_data *data)
+{
+ GdkRectangle draw_rect;
+
+ if (!data->button_pressed)
+ return TRUE;
+
+ draw_rect.width = ABS (data->rect.x - event->x_root);
+ draw_rect.height = ABS (data->rect.y - event->y_root);
+ draw_rect.x = MIN (data->rect.x, event->x_root);
+ draw_rect.y = MIN (data->rect.y, event->y_root);
+
+ if (draw_rect.width <= 0 || draw_rect.height <= 0)
+ {
+ gtk_window_move (GTK_WINDOW (window), -100, -100);
+ gtk_window_resize (GTK_WINDOW (window), 10, 10);
+ return TRUE;
+ }
+
+ gtk_window_move (GTK_WINDOW (window), draw_rect.x, draw_rect.y);
+ gtk_window_resize (GTK_WINDOW (window), draw_rect.width, draw_rect.height);
+
+ /* We (ab)use app-paintable to indicate if we have an RGBA window */
+ if (!gtk_widget_get_app_paintable (window))
+ {
+ GdkWindow *gdkwindow = gtk_widget_get_window (window);
+
+ /* Shape the window to make only the outline visible */
+ if (draw_rect.width > 2 && draw_rect.height > 2)
+ {
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cairo_region_t *region, *region2;
+ cairo_rectangle_int_t region_rect = {
+#else
+ GdkRegion *region, *region2;
+ GdkRectangle region_rect = {
+#endif
+ 0, 0,
+ draw_rect.width - 2, draw_rect.height - 2
+ };
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ region = cairo_region_create_rectangle (&region_rect);
+#else
+ region = gdk_region_rectangle (&region_rect);
+#endif
+ region_rect.x++;
+ region_rect.y++;
+ region_rect.width -= 2;
+ region_rect.height -= 2;
+#if GTK_CHECK_VERSION (3, 0, 0)
+ region2 = cairo_region_create_rectangle (&region_rect);
+ cairo_region_subtract (region, region2);
+#else
+ region2 = gdk_region_rectangle (&region_rect);
+ gdk_region_subtract (region, region2);
+#endif
+
+ gdk_window_shape_combine_region (gdkwindow, region, 0, 0);
+
+ gdk_region_destroy (region);
+ gdk_region_destroy (region2);
+ }
+ else
+ gdk_window_shape_combine_region (gdkwindow, NULL, 0, 0);
+ }
+
+ return TRUE;
+}
+
+static gboolean
+select_area_button_release (GtkWidget *window,
+ GdkEventButton *event,
+ select_area_filter_data *data)
+{
+ if (!data->button_pressed)
+ return TRUE;
+
+ data->rect.width = ABS (data->rect.x - event->x_root);
+ data->rect.height = ABS (data->rect.y - event->y_root);
+ data->rect.x = MIN (data->rect.x, event->x_root);
+ data->rect.y = MIN (data->rect.y, event->y_root);
+
+ gtk_main_quit ();
+
+ return TRUE;
+}
+
+static gboolean
+select_area_key_press (GtkWidget *window,
+ GdkEventKey *event,
+ select_area_filter_data *data)
+{
+ if (event->keyval == GDK_KEY_Escape)
+ {
+ data->rect.x = 0;
+ data->rect.y = 0;
+ data->rect.width = 0;
+ data->rect.height = 0;
+ gtk_main_quit ();
+ }
+
+ return TRUE;
+}
+
+
+static gboolean
+#if GTK_CHECK_VERSION (3, 0, 0)
+draw (GtkWidget *window, cairo_t *cr, gpointer unused)
+#else
+expose (GtkWidget *window, GdkEventExpose *event, gpointer unused)
+#endif
+{
+ GtkAllocation allocation;
+ GtkStyle *style;
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ cairo_t *cr;
+
+ cr = gdk_cairo_create (event->window);
+ gdk_cairo_region (cr, event->region);
+ cairo_clip (cr);
+#endif
+
+ style = gtk_widget_get_style (window);
+
+ if (gtk_widget_get_app_paintable (window))
+ {
+ cairo_set_line_width (cr, 1.0);
+
+ gtk_widget_get_allocation (window, &allocation);
+
+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
+ cairo_set_source_rgba (cr, 0, 0, 0, 0);
+ cairo_paint (cr);
+
+ cairo_set_operator (cr, CAIRO_OPERATOR_OVER);
+ gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_SELECTED]);
+ cairo_paint_with_alpha (cr, 0.25);
+
+ cairo_rectangle (cr,
+ allocation.x + 0.5, allocation.y + 0.5,
+ allocation.width - 1, allocation.height - 1);
+ cairo_stroke (cr);
+ }
+ else
+ {
+ gdk_cairo_set_source_color (cr, &style->base[GTK_STATE_SELECTED]);
+ cairo_paint (cr);
+ }
+
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ cairo_destroy (cr);
+#endif
+
+ return TRUE;
+}
+
+static GtkWidget *
+create_select_window (void)
+{
+ GtkWidget *window;
+ GdkScreen *screen;
+#if GTK_CHECK_VERSION (3, 0, 0)
+ GdkVisual *visual;
+#endif
+
+ screen = gdk_screen_get_default ();
+#if GTK_CHECK_VERSION (3, 0, 0)
+ visual = gdk_screen_get_rgba_visual (screen);
+#endif
+
+ window = gtk_window_new (GTK_WINDOW_POPUP);
+ if (gdk_screen_is_composited (screen) &&
+#if GTK_CHECK_VERSION (3, 0, 0)
+ visual)
+#else
+ gdk_screen_get_rgba_colormap (screen))
+#endif
+ {
+#if GTK_CHECK_VERSION (3, 0, 0)
+ gtk_widget_set_visual (window, visual);
+#else
+ gtk_widget_set_colormap (window, gdk_screen_get_rgba_colormap (screen));
+#endif
+ gtk_widget_set_app_paintable (window, TRUE);
+ }
+#if GTK_CHECK_VERSION (3, 0, 0)
+ g_signal_connect (window, "draw", G_CALLBACK (draw), NULL);
+#else
+ g_signal_connect (window, "expose-event", G_CALLBACK (expose), NULL);
+#endif
+
+ gtk_window_move (GTK_WINDOW (window), -100, -100);
+ gtk_window_resize (GTK_WINDOW (window), 10, 10);
+ gtk_widget_show (window);
+ return window;
+}
+
+typedef struct {
+ GdkRectangle rectangle;
+ SelectAreaCallback callback;
+} CallbackData;
+
+static gboolean
+emit_select_callback_in_idle (gpointer user_data)
+{
+ CallbackData *data = user_data;
+
+ data->callback (&data->rectangle);
+
+ g_slice_free (CallbackData, data);
+
+ return FALSE;
+}
+
+void
+screenshot_select_area_async (SelectAreaCallback callback)
+{
+ GdkCursor *cursor;
+ select_area_filter_data data;
+ GdkRectangle *rectangle;
+ CallbackData *cb_data;
+
+ data.rect.x = 0;
+ data.rect.y = 0;
+ data.rect.width = 0;
+ data.rect.height = 0;
+ data.button_pressed = FALSE;
+ data.window = create_select_window();
+
+ cb_data = g_slice_new0 (CallbackData);
+ cb_data->callback = callback;
+
+ g_signal_connect (data.window, "key-press-event", G_CALLBACK (select_area_key_press), &data);
+ g_signal_connect (data.window, "button-press-event", G_CALLBACK (select_area_button_press), &data);
+ g_signal_connect (data.window, "button-release-event", G_CALLBACK (select_area_button_release), &data);
+ g_signal_connect (data.window, "motion-notify-event", G_CALLBACK (select_area_motion_notify), &data);
+
+ cursor = gdk_cursor_new (GDK_CROSSHAIR);
+
+ if (gdk_pointer_grab (gtk_widget_get_window (data.window), FALSE,
+ GDK_POINTER_MOTION_MASK|GDK_BUTTON_PRESS_MASK|GDK_BUTTON_RELEASE_MASK,
+ NULL, cursor,
+ GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
+ {
+ gdk_cursor_unref (cursor);
+ goto out;
+ }
+
+ if (gdk_keyboard_grab (gtk_widget_get_window (data.window), FALSE, GDK_CURRENT_TIME) != GDK_GRAB_SUCCESS)
+ {
+ gdk_pointer_ungrab (GDK_CURRENT_TIME);
+ gdk_cursor_unref (cursor);
+ goto out;
+ }
+
+ gtk_main ();
+
+ gdk_keyboard_ungrab (GDK_CURRENT_TIME);
+ gdk_pointer_ungrab (GDK_CURRENT_TIME);
+
+ gtk_widget_destroy (data.window);
+ gdk_cursor_unref (cursor);
+
+ gdk_flush ();
+
+ out:
+ cb_data->rectangle = data.rect;
+
+ /* FIXME: we should actually be emitting the callback When
+ * the compositor has finished re-drawing, but there seems to be no easy
+ * way to know that.
+ */
+ g_timeout_add (200, emit_select_callback_in_idle, cb_data);
+}
+
+static Window
+find_wm_window (Window xid)
+{
+ Window root, parent, *children;
+ unsigned int nchildren;
+
+ do
+ {
+ if (XQueryTree (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), xid, &root,
+ &parent, &children, &nchildren) == 0)
+ {
+ g_warning ("Couldn't find window manager window");
+ return None;
+ }
+
+ if (root == parent)
+ return xid;
+
+ xid = parent;
+ }
+ while (TRUE);
+}
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+static cairo_region_t *
+#else
+static GdkRegion *
+#endif
+make_region_with_monitors (GdkScreen *screen)
+{
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cairo_region_t *region;
+#else
+ GdkRegion *region;
+#endif
+ int num_monitors;
+ int i;
+
+ num_monitors = gdk_screen_get_n_monitors (screen);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ region = cairo_region_create ();
+#else
+ region = gdk_region_new ();
+#endif
+
+ for (i = 0; i < num_monitors; i++)
+ {
+ GdkRectangle rect;
+
+ gdk_screen_get_monitor_geometry (screen, i, &rect);
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cairo_region_union_rectangle (region, &rect);
+#else
+ gdk_region_union_with_rect (region, &rect);
+#endif
+ }
+
+ return region;
+}
+
+static void
+blank_rectangle_in_pixbuf (GdkPixbuf *pixbuf, GdkRectangle *rect)
+{
+ int x, y;
+ int x2, y2;
+ guchar *pixels;
+ int rowstride;
+ int n_channels;
+ guchar *row;
+ gboolean has_alpha;
+
+ g_assert (gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB);
+
+ x2 = rect->x + rect->width;
+ y2 = rect->y + rect->height;
+
+ pixels = gdk_pixbuf_get_pixels (pixbuf);
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+ has_alpha = gdk_pixbuf_get_has_alpha (pixbuf);
+ n_channels = gdk_pixbuf_get_n_channels (pixbuf);
+
+ for (y = rect->y; y < y2; y++)
+ {
+ guchar *p;
+
+ row = pixels + y * rowstride;
+ p = row + rect->x * n_channels;
+
+ for (x = rect->x; x < x2; x++)
+ {
+ *p++ = 0;
+ *p++ = 0;
+ *p++ = 0;
+
+ if (has_alpha)
+ *p++ = 255; /* opaque black */
+ }
+ }
+}
+
+static void
+#if GTK_CHECK_VERSION (3, 0, 0)
+blank_region_in_pixbuf (GdkPixbuf *pixbuf, cairo_region_t *region)
+{
+ int n_rects;
+ int i;
+ int width, height;
+ cairo_rectangle_int_t pixbuf_rect;
+
+ n_rects = cairo_region_num_rectangles (region);
+#else
+blank_region_in_pixbuf (GdkPixbuf *pixbuf, GdkRegion *region)
+{
+ GdkRectangle *rects;
+ int n_rects;
+ int i;
+ int width, height;
+ GdkRectangle pixbuf_rect;
+
+ gdk_region_get_rectangles (region, &rects, &n_rects);
+#endif
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+
+ pixbuf_rect.x = 0;
+ pixbuf_rect.y = 0;
+ pixbuf_rect.width = width;
+ pixbuf_rect.height = height;
+
+ for (i = 0; i < n_rects; i++)
+ {
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cairo_rectangle_int_t rect, dest;
+
+ cairo_region_get_rectangle (region, i, &rect);
+ if (gdk_rectangle_intersect (&rect, &pixbuf_rect, &dest))
+#else
+ GdkRectangle dest;
+
+ if (gdk_rectangle_intersect (rects + i, &pixbuf_rect, &dest))
+#endif
+ blank_rectangle_in_pixbuf (pixbuf, &dest);
+
+ }
+#if !GTK_CHECK_VERSION (3, 0, 0)
+ g_free (rects);
+#endif
+}
+
+/* When there are multiple monitors with different resolutions, the visible area
+ * within the root window may not be rectangular (it may have an L-shape, for
+ * example). In that case, mask out the areas of the root window which would
+ * not be visible in the monitors, so that screenshot do not end up with content
+ * that the user won't ever see.
+ */
+static void
+mask_monitors (GdkPixbuf *pixbuf, GdkWindow *root_window)
+{
+ GdkScreen *screen;
+#if GTK_CHECK_VERSION (3, 0, 0)
+ cairo_region_t *region_with_monitors;
+ cairo_region_t *invisible_region;
+ cairo_rectangle_int_t rect;
+#else
+ GdkRegion *region_with_monitors;
+ GdkRegion *invisible_region;
+ GdkRectangle rect;
+#endif
+
+ screen = gdk_window_get_screen (root_window);
+
+ region_with_monitors = make_region_with_monitors (screen);
+
+ rect.x = 0;
+ rect.y = 0;
+ rect.width = gdk_screen_get_width (screen);
+ rect.height = gdk_screen_get_height (screen);
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ invisible_region = cairo_region_create_rectangle (&rect);
+ cairo_region_subtract (invisible_region, region_with_monitors);
+
+ blank_region_in_pixbuf (pixbuf, invisible_region);
+
+ cairo_region_destroy (region_with_monitors);
+ cairo_region_destroy (invisible_region);
+#else
+ invisible_region = gdk_region_rectangle (&rect);
+ gdk_region_subtract (invisible_region, region_with_monitors);
+
+ blank_region_in_pixbuf (pixbuf, invisible_region);
+
+ gdk_region_destroy (region_with_monitors);
+ gdk_region_destroy (invisible_region);
+#endif
+}
+
+GdkPixbuf *
+screenshot_get_pixbuf (GdkWindow *window,
+ GdkRectangle *rectangle,
+ gboolean include_pointer,
+ gboolean include_border,
+ gboolean include_mask)
+{
+ GdkWindow *root;
+ GdkPixbuf *screenshot;
+ gint x_real_orig, y_real_orig, x_orig, y_orig;
+ gint width, real_width, height, real_height;
+
+ /* If the screenshot should include the border, we look for the WM window. */
+
+ if (include_border)
+ {
+ Window xid, wm;
+
+ xid = GDK_WINDOW_XID (window);
+ wm = find_wm_window (xid);
+
+ if (wm != None)
+ window = gdk_x11_window_foreign_new_for_display (gdk_display_get_default (), wm);
+
+ /* fallback to no border if we can't find the WM window. */
+ }
+
+ root = gdk_get_default_root_window ();
+
+ real_width = gdk_window_get_width(window);
+ real_height = gdk_window_get_height(window);
+
+ gdk_window_get_origin (window, &x_real_orig, &y_real_orig);
+
+ x_orig = x_real_orig;
+ y_orig = y_real_orig;
+ width = real_width;
+ height = real_height;
+
+ if (x_orig < 0)
+ {
+ width = width + x_orig;
+ x_orig = 0;
+ }
+
+ if (y_orig < 0)
+ {
+ 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;
+
+ if (rectangle)
+ {
+ x_orig = rectangle->x - x_orig;
+ y_orig = rectangle->y - y_orig;
+ width = rectangle->width;
+ height = rectangle->height;
+ }
+
+#if GTK_CHECK_VERSION (3, 0, 0)
+ screenshot = gdk_pixbuf_get_from_window (root,
+ x_orig, y_orig,
+ width, height);
+#else
+ screenshot = gdk_pixbuf_get_from_drawable (NULL, root, NULL,
+ x_orig, y_orig, 0, 0,
+ width, height);
+#endif
+
+ /*
+ * Masking currently only works properly with full-screen shots
+ */
+ if (include_mask)
+ mask_monitors (screenshot, root);
+
+#ifdef HAVE_X11_EXTENSIONS_SHAPE_H
+ if (include_border)
+ {
+ XRectangle *rectangles;
+ GdkPixbuf *tmp;
+ int rectangle_count, rectangle_order, i;
+
+ /* we must use XShape to avoid showing what's under the rounder corners
+ * of the WM decoration.
+ */
+
+ rectangles = XShapeGetRectangles (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
+ GDK_WINDOW_XID (window),
+ ShapeBounding,
+ &rectangle_count,
+ &rectangle_order);
+ if (rectangles && rectangle_count > 0 && window != root)
+ {
+ gboolean has_alpha = gdk_pixbuf_get_has_alpha (screenshot);
+
+ tmp = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
+ gdk_pixbuf_fill (tmp, 0);
+
+ for (i = 0; i < rectangle_count; i++)
+ {
+ gint rec_x, rec_y;
+ gint rec_width, rec_height;
+ gint y;
+
+ rec_x = rectangles[i].x;
+ rec_y = rectangles[i].y;
+ rec_width = rectangles[i].width;
+ rec_height = rectangles[i].height;
+
+ if (x_real_orig < 0)
+ {
+ rec_x += x_real_orig;
+ rec_x = MAX(rec_x, 0);
+ rec_width += x_real_orig;
+ }
+
+ if (y_real_orig < 0)
+ {
+ rec_y += y_real_orig;
+ rec_y = MAX(rec_y, 0);
+ rec_height += y_real_orig;
+ }
+
+ if (x_orig + rec_x + rec_width > gdk_screen_width ())
+ rec_width = gdk_screen_width () - x_orig - rec_x;
+
+ if (y_orig + rec_y + rec_height > gdk_screen_height ())
+ rec_height = gdk_screen_height () - y_orig - rec_y;
+
+ for (y = rec_y; y < rec_y + rec_height; y++)
+ {
+ guchar *src_pixels, *dest_pixels;
+ gint x;
+
+ src_pixels = gdk_pixbuf_get_pixels (screenshot)
+ + y * gdk_pixbuf_get_rowstride(screenshot)
+ + rec_x * (has_alpha ? 4 : 3);
+ dest_pixels = gdk_pixbuf_get_pixels (tmp)
+ + y * gdk_pixbuf_get_rowstride (tmp)
+ + rec_x * 4;
+
+ for (x = 0; x < rec_width; x++)
+ {
+ *dest_pixels++ = *src_pixels++;
+ *dest_pixels++ = *src_pixels++;
+ *dest_pixels++ = *src_pixels++;
+
+ if (has_alpha)
+ *dest_pixels++ = *src_pixels++;
+ else
+ *dest_pixels++ = 255;
+ }
+ }
+ }
+
+ g_object_unref (screenshot);
+ screenshot = tmp;
+ }
+ }
+#endif /* HAVE_X11_EXTENSIONS_SHAPE_H */
+
+ /* if we have a selected area, there were by definition no cursor in the
+ * screenshot */
+ if (include_pointer && !rectangle)
+ {
+ GdkCursor *cursor;
+ GdkPixbuf *cursor_pixbuf;
+
+ cursor = gdk_cursor_new_for_display (gdk_display_get_default (), GDK_LEFT_PTR);
+ cursor_pixbuf = gdk_cursor_get_image (cursor);
+
+ if (cursor_pixbuf != NULL)
+ {
+ GdkRectangle r1, r2;
+ gint cx, cy, xhot, yhot;
+
+ gdk_window_get_pointer (window, &cx, &cy, NULL);
+ sscanf (gdk_pixbuf_get_option (cursor_pixbuf, "x_hot"), "%d", &xhot);
+ sscanf (gdk_pixbuf_get_option (cursor_pixbuf, "y_hot"), "%d", &yhot);
+
+ /* in r1 we have the window coordinates */
+ r1.x = x_real_orig;
+ r1.y = y_real_orig;
+ r1.width = real_width;
+ r1.height = real_height;
+
+ /* in r2 we have the cursor window coordinates */
+ r2.x = cx + x_real_orig;
+ r2.y = cy + y_real_orig;
+ r2.width = gdk_pixbuf_get_width (cursor_pixbuf);
+ r2.height = gdk_pixbuf_get_height (cursor_pixbuf);
+
+ /* see if the pointer is inside the window */
+ if (gdk_rectangle_intersect (&r1, &r2, &r2))
+ {
+ gdk_pixbuf_composite (cursor_pixbuf, screenshot,
+ cx - xhot, cy - yhot,
+ r2.width, r2.height,
+ cx - xhot, cy - yhot,
+ 1.0, 1.0,
+ GDK_INTERP_BILINEAR,
+ 255);
+ }
+
+ g_object_unref (cursor_pixbuf);
+ gdk_cursor_unref (cursor);
+ }
+ }
+
+ return screenshot;
+}
+
+gchar *
+screenshot_get_window_title (GdkWindow *win)
+{
+ gchar *name;
+
+ win = gdk_window_get_toplevel (win);
+ win = look_for_hint (win, gdk_x11_xatom_to_atom (gdk_x11_get_xatom_by_name ("WM_STATE")));
+
+ name = get_utf8_property (win, gdk_x11_xatom_to_atom (gdk_x11_get_xatom_by_name ("_NET_WM_NAME")));
+ if (name)
+ return name;
+
+ /* TODO: maybe we should also look at WM_NAME and WM_CLASS? */
+
+ return g_strdup (_("Untitled Window"));
+}
+
+void
+screenshot_show_error_dialog (GtkWindow *parent,
+ const gchar *message,
+ const gchar *detail)
+{
+ GtkWidget *dialog;
+
+ g_return_if_fail ((parent == NULL) || (GTK_IS_WINDOW (parent)));
+ g_return_if_fail (message != NULL);
+
+ dialog = gtk_message_dialog_new (parent,
+ GTK_DIALOG_DESTROY_WITH_PARENT,
+ GTK_MESSAGE_ERROR,
+ GTK_BUTTONS_OK,
+ "%s", message);
+ gtk_window_set_title (GTK_WINDOW (dialog), "");
+
+ if (detail)
+ gtk_message_dialog_format_secondary_text (GTK_MESSAGE_DIALOG (dialog),
+ "%s", detail);
+
+ if (parent && gtk_window_get_group (parent))
+ gtk_window_group_add_window (gtk_window_get_group (parent), GTK_WINDOW (dialog));
+
+ gtk_dialog_run (GTK_DIALOG (dialog));
+
+ gtk_widget_destroy (dialog);
+}
+
+void
+screenshot_show_gerror_dialog (GtkWindow *parent,
+ const gchar *message,
+ GError *error)
+{
+ g_return_if_fail (parent == NULL || GTK_IS_WINDOW (parent));
+ g_return_if_fail (message != NULL);
+ g_return_if_fail (error != NULL);
+
+ screenshot_show_error_dialog (parent, message, error->message);
+}