Resize support for detached GTK Panels.

chrome/browser/ui/panels/panel_browser_window_gtk.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_WINDOW_GTK_H_
 #define CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_WINDOW_GTK_H_
 
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "chrome/browser/ui/gtk/browser_window_gtk.h"
 #include "chrome/browser/ui/gtk/menu_gtk.h"
 #include "chrome/browser/ui/panels/native_panel.h"
 #include "ui/base/animation/animation_delegate.h"
 
 class Panel;
 class PanelBoundsAnimation;
+class PanelDragGtk;
 class PanelSettingsMenuModel;
 class NativePanelTestingGtk;
 
 class PanelBrowserWindowGtk : public BrowserWindowGtk,
                               public MenuGtk::Delegate,
                               public MessageLoopForUI::Observer,
                               public NativePanel,
                               public ui::AnimationDelegate {
  public:
   PanelBrowserWindowGtk(Browser* browser, Panel* panel,
@@ skipping 16 matching lines @@
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  protected:
   // BrowserWindowGtk overrides
   virtual bool GetWindowEdge(int x, int y, GdkWindowEdge* edge) OVERRIDE;
   virtual bool HandleTitleBarLeftMousePress(
       GdkEventButton* event,
       guint32 last_click_time,
       gfx::Point last_click_position) OVERRIDE;
+  virtual bool HandleWindowEdgeLeftMousePress(
+      GtkWindow* window,
+      GdkWindowEdge edge,
+      GdkEventButton* event) OVERRIDE;
   virtual void SaveWindowPosition() OVERRIDE;
   virtual void SetGeometryHints() OVERRIDE;
   virtual bool UseCustomFrame() OVERRIDE;
   virtual void OnSizeChanged(int width, int height) OVERRIDE;
   virtual void DrawCustomFrame(cairo_t* cr, GtkWidget* widget,
                                GdkEventExpose* event) OVERRIDE;
   virtual void DrawPopupFrame(cairo_t* cr, GtkWidget* widget,
                               GdkEventExpose* event) OVERRIDE;
   virtual void ActiveWindowChanged(GdkWindow* active_window) OVERRIDE;
   // 'focus-in-event' handler.
@@ skipping 55 matching lines @@
 
   // Overridden from AnimationDelegate:
   virtual void AnimationEnded(const ui::Animation* animation) OVERRIDE;
   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
 
   void CreateDragWidget();
   void DestroyDragWidget();
   void EndDrag(bool canceled);
   void CleanupDragDrop();
 
+  // Creates helper for handling drags if not already created.
+  void EnsureDragHelperCreated();
+
   void SetBoundsInternal(const gfx::Rect& bounds, bool animate);
   void ResizeWindow(int width, int height);
 
   void DrawAttentionFrame(cairo_t* cr, GtkWidget* widget,
                           GdkEventExpose* event);
   GdkRectangle GetTitlebarRectForDrawAttention() const;
 
   CHROMEGTK_CALLBACK_1(PanelBrowserWindowGtk, gboolean,
                        OnTitlebarButtonPressEvent, GdkEventButton*);
   CHROMEGTK_CALLBACK_1(PanelBrowserWindowGtk, gboolean,
@@ skipping 41 matching lines @@
   // a task to end the drag and only run it if GTK+ didn't send us the
   // drag-failed event.
   base::WeakPtrFactory<PanelBrowserWindowGtk> drag_end_factory_;
 
   scoped_ptr<Panel> panel_;
   gfx::Rect bounds_;
 
   scoped_ptr<PanelSettingsMenuModel> settings_menu_model_;
   scoped_ptr<MenuGtk> settings_menu_;
 
+  scoped_ptr<PanelDragGtk> drag_helper_;
+
   // Size of window frame. Empty until the window has been allocated and sized.
   gfx::Size frame_size_;
 
   // Indicates that the panel is currently drawing attention.
   bool is_drawing_attention_;
 
   // Disable ExpansionState changes on mouse click for a short duration.
   // This is needed in case the window gains focus as result of mouseDown while
   // being already expanded and drawing attention - in this case, we don't
   // want to minimize it on subsequent mouseUp.
@@ skipping 18 matching lines @@
 
   // The close button is not shown when panel is in icon only mode in overflow.
   bool show_close_button_;
 
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(PanelBrowserWindowGtk);
 };
 
 #endif  // CHROME_BROWSER_UI_PANELS_PANEL_BROWSER_WINDOW_GTK_H_