X-Git-Url: https://www.fi.muni.cz/~kas/git//home/kas/public_html/git/?a=blobdiff_plain;ds=sidebyside;f=shell%2Fev-utils.c;h=3e5c203f5d89758b41063baafd296b66fdb8180a;hb=595d902c5518765e086e8a911124ef36ed9300b7;hp=90217262f3dbc2a16041d07346affbfd4fa5ee21;hpb=13a06349251874bd35d2f03c3fc93217cee749a2;p=evince.git

diff --git a/shell/ev-utils.c b/shell/ev-utils.c
index 90217262..3e5c203f 100644
--- a/shell/ev-utils.c
+++ b/shell/ev-utils.c
@@ -369,3 +369,44 @@ ev_gui_menu_position_tree_selection (GtkMenu   *menu,
 	ev_gui_sanitise_popup_position (menu, widget, x, y);
 }
 
+/**
+ * get_num_monitors: Get the number of user monitors.
+ * @window: optional GtkWindow to look at.
+ *
+ * Returns: Number of monitors, -1 if uncertain situation (like multiple screens)
+ */
+gint 
+get_num_monitors (GtkWindow *window)
+{
+	GdkDisplay *display; 
+	GdkScreen *screen;
+	gint num_screen;
+	
+	display = gdk_display_get_default ();
+	num_screen = gdk_display_get_n_screens (display);
+	
+	if (num_screen != 1)
+		return -1;
+	
+	if (window)
+		screen = gtk_window_get_screen (window);
+	else
+		screen = gdk_display_get_screen (display, 0);
+
+	return gdk_screen_get_n_monitors (screen);
+}
+
+gdouble
+get_screen_dpi (GtkWindow *window)
+{
+	GdkScreen *screen;
+	gdouble    xdpi, ydpi;
+
+	screen = gtk_window_get_screen (window);
+
+	xdpi = 25.4 * gdk_screen_get_width (screen) / gdk_screen_get_width_mm (screen);
+	ydpi = 25.4 * gdk_screen_get_height (screen) / gdk_screen_get_height_mm (screen);
+	
+	return (xdpi + ydpi) / 2.0;
+}
+