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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_UI_GTK_PANELS_PANEL_TITLEBAR_GTK_H_
      6 #define CHROME_BROWSER_UI_GTK_PANELS_PANEL_TITLEBAR_GTK_H_
      7 
      8 #include <gtk/gtk.h>
      9 
     10 #include "base/compiler_specific.h"
     11 #include "base/memory/scoped_ptr.h"
     12 #include "chrome/browser/ui/gtk/titlebar_throb_animation.h"
     13 #include "chrome/browser/ui/panels/panel_constants.h"
     14 #include "ui/base/gtk/gtk_signal.h"
     15 #include "ui/gfx/skia_util.h"
     16 
     17 class CustomDrawButton;
     18 class PanelGtk;
     19 
     20 namespace content {
     21 class WebContents;
     22 }
     23 
     24 class PanelTitlebarGtk {
     25  public:
     26   explicit PanelTitlebarGtk(PanelGtk* panel_gtk);
     27   virtual ~PanelTitlebarGtk();
     28 
     29   void UpdateTextColor();
     30   void UpdateMinimizeRestoreButtonVisibility();
     31 
     32   // When a panel appears in the same position as the one of the panel being
     33   // closed and the cursor stays in the close button, the close button appears
     34   // not to be clickable. This is because neither "enter-notify-event" nor
     35   // "clicked" event for the new panel gets fired if the mouse does not move.
     36   // This creates a bad experience when a user has multiple panels of the same
     37   // size (which is typical) and tries closing them all by repeatedly clicking
     38   // in the same place on the screen.
     39   //
     40   // Opened a gtk bug for this -
     41   //   https://bugzilla.gnome.org/show_bug.cgi?id=667841
     42   void SendEnterNotifyToCloseButtonIfUnderMouse();
     43 
     44   void Init();
     45   void UpdateTitleAndIcon();
     46   void UpdateThrobber(content::WebContents* web_contents);
     47   GtkWidget* widget() const;
     48 
     49  private:
     50   friend class GtkNativePanelTesting;
     51 
     52   void BuildButtons();
     53   CustomDrawButton* CreateButton(panel::TitlebarButtonType button_type);
     54   void GetButtonResources(panel::TitlebarButtonType button_type,
     55                           int* normal_image_id,
     56                           int* pressed_image_id,
     57                           int* hover_image_id,
     58                           int* tooltip_id) const;
     59   GtkWidget* GetButtonHBox();
     60 
     61   // Callback for minimize/restore/close buttons.
     62   CHROMEGTK_CALLBACK_0(PanelTitlebarGtk, void, OnButtonClicked);
     63 
     64   CustomDrawButton* close_button() const { return close_button_.get(); }
     65   CustomDrawButton* minimize_button() const { return minimize_button_.get(); }
     66   CustomDrawButton* restore_button() const { return restore_button_.get(); }
     67 
     68   SkColor GetTextColor() const;
     69 
     70   // Pointers to the native panel window that owns us and its GtkWindow.
     71   PanelGtk* panel_gtk_;
     72 
     73   // The container widget the holds the hbox which contains the whole titlebar.
     74   GtkWidget* container_;
     75 
     76   // VBoxes that holds the minimize/restore/close buttons box.
     77   GtkWidget* titlebar_right_buttons_vbox_;
     78 
     79   // HBoxes that contains the actual min/max/close buttons.
     80   GtkWidget* titlebar_right_buttons_hbox_;
     81 
     82   // The icon and page title.
     83   GtkWidget* icon_;
     84   GtkWidget* title_;
     85 
     86   // The buttons.
     87   scoped_ptr<CustomDrawButton> close_button_;
     88   scoped_ptr<CustomDrawButton> minimize_button_;
     89   scoped_ptr<CustomDrawButton> restore_button_;
     90 
     91   TitlebarThrobAnimation throbber_;
     92 
     93   DISALLOW_COPY_AND_ASSIGN(PanelTitlebarGtk);
     94 };
     95 
     96 #endif  // CHROME_BROWSER_UI_GTK_PANELS_PANEL_TITLEBAR_GTK_H_
     97