Draggable region support for frameless app window on GTK.

chrome/browser/ui/gtk/browser_window_gtk.cc

Index: chrome/browser/ui/gtk/browser_window_gtk.cc
diff --git a/chrome/browser/ui/gtk/browser_window_gtk.cc b/chrome/browser/ui/gtk/browser_window_gtk.cc
index 8f106730388764997c736c0a6c1f208b36eab793..682fc540b371e64c0717af2a41df3964f5fb859e 100644
--- a/chrome/browser/ui/gtk/browser_window_gtk.cc
+++ b/chrome/browser/ui/gtk/browser_window_gtk.cc
@@ -2322,42 +2322,8 @@ bool BrowserWindowGtk::HandleTitleBarLeftMousePress(
     GdkEventButton* event,
     guint32 last_click_time,
     gfx::Point last_click_position) {
-  // We want to start a move when the user single clicks, but not start a
-  // move when the user double clicks.  However, a double click sends the
-  // following GDK events: GDK_BUTTON_PRESS, GDK_BUTTON_RELEASE,
-  // GDK_BUTTON_PRESS, GDK_2BUTTON_PRESS, GDK_BUTTON_RELEASE.  If we
-  // start a gtk_window_begin_move_drag on the second GDK_BUTTON_PRESS,
-  // the call to gtk_window_maximize fails.  To work around this, we
-  // keep track of the last click and if it's going to be a double click,
-  // we don't call gtk_window_begin_move_drag.
-  static GtkSettings* settings = gtk_settings_get_default();
-  gint double_click_time = 250;
-  gint double_click_distance = 5;
-  g_object_get(G_OBJECT(settings),
-               "gtk-double-click-time", &double_click_time,
-               "gtk-double-click-distance", &double_click_distance,
-               NULL);
-
-  guint32 click_time = event->time - last_click_time;
-  int click_move_x = abs(event->x - last_click_position.x());
-  int click_move_y = abs(event->y - last_click_position.y());
-
-  if (click_time > static_cast<guint32>(double_click_time) ||
-      click_move_x > double_click_distance ||
-      click_move_y > double_click_distance) {
-    // Ignore drag requests if the window is the size of the screen.
-    // We do this to avoid triggering fullscreen mode in metacity
-    // (without the --no-force-fullscreen flag) and in compiz (with
-    // Legacy Fullscreen Mode enabled).
-    if (!BoundsMatchMonitorSize()) {
-      gtk_window_begin_move_drag(window_, event->button,
-                                 static_cast<gint>(event->x_root),
-                                 static_cast<gint>(event->y_root),
-                                 event->time);
-    }
-    return TRUE;
-  }
-  return FALSE;
+  return gtk_window_util::HandleTitleBarLeftMousePress(window_, bounds_,
+      event, last_click_time, last_click_position);
 }
 
 bool BrowserWindowGtk::HandleWindowEdgeLeftMousePress(
@@ -2496,17 +2462,6 @@ bool BrowserWindowGtk::UseCustomFrame() const {
   return use_custom_frame_pref_.GetValue() && !browser_->is_app();
 }
 
-bool BrowserWindowGtk::BoundsMatchMonitorSize() {
-  // A screen can be composed of multiple monitors.
-  GdkScreen* screen = gtk_window_get_screen(window_);
-  gint monitor_num = gdk_screen_get_monitor_at_window(screen,
-      gtk_widget_get_window(GTK_WIDGET(window_)));
-
-  GdkRectangle monitor_size;
-  gdk_screen_get_monitor_geometry(screen, monitor_num, &monitor_size);
-  return bounds_.size() == gfx::Size(monitor_size.width, monitor_size.height);
-}
-
 void BrowserWindowGtk::PlaceBookmarkBar(bool is_floating) {
   TRACE_EVENT0("ui::gtk", "BrowserWindowGtk::PlaceBookmarkBar");