Panels refactor: Support browserless panels on Linux.

chrome/browser/ui/panels/panel_titlebar_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_TITLEBAR_GTK_H_
+#define CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_GTK_H_
+
+#include <gtk/gtk.h>
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_ptr.h"
+#include "chrome/browser/ui/gtk/titlebar_throb_animation.h"
+#include "chrome/browser/ui/panels/panel_constants.h"
+#include "ui/base/gtk/gtk_signal.h"
+#include "ui/gfx/skia_util.h"
+
+class CustomDrawButton;
+class GtkThemeService;
+class PanelGtk;
+
+namespace content {
+class WebContents;
+}
+
+class PanelTitlebarGtk {
+ public:
+  explicit PanelTitlebarGtk(PanelGtk* panel_gtk);
+  virtual ~PanelTitlebarGtk();
+
+  void UpdateTextColor();
+  void UpdateMinimizeRestoreButtonVisibility();
+
+  // When a panel appears in the same position as the one of the panel being
+  // closed and the cursor stays in the close button, the close button appears
+  // not to be clickable. This is because neither "enter-notify-event" nor
+  // "clicked" event for the new panel gets fired if the mouse does not move.
+  // This creates a bad experience when a user has multiple panels of the same
+  // size (which is typical) and tries closing them all by repeatedly clicking
+  // in the same place on the screen.
+  //
+  // Opened a gtk bug for this -
+  //   https://bugzilla.gnome.org/show_bug.cgi?id=667841
+  void SendEnterNotifyToCloseButtonIfUnderMouse();
+
+  void Init();
+  void UpdateTitleAndIcon();
+  void UpdateThrobber(content::WebContents* web_contents);
+  GtkWidget* widget() const;
+
+ private:
+  friend class GtkNativePanelTesting;
+
+  void BuildButtons();
+  CustomDrawButton* CreateButton(panel::TitlebarButtonType button_type);
+  void GetButtonResources(panel::TitlebarButtonType button_type,
+                          int* normal_image_id,
+                          int* pressed_image_id,
+                          int* hover_image_id,
+                          int* tooltip_id) const;
+  GtkWidget* GetButtonHBox();
+
+  // Callback for minimize/restore/close buttons.
+  CHROMEGTK_CALLBACK_0(PanelTitlebarGtk, void, OnButtonClicked);
+
+  CustomDrawButton* close_button() const { return close_button_.get(); }
+  CustomDrawButton* minimize_button() const { return minimize_button_.get(); }
+  CustomDrawButton* restore_button() const { return restore_button_.get(); }
+
+  SkColor GetTextColor() const;
+
+  // Pointers to the native panel window that owns us and its GtkWindow.
+  PanelGtk* panel_gtk_;
+
+  // The container widget the holds the hbox which contains the whole titlebar.
+  GtkWidget* container_;
+
+  // VBoxes that holds the minimize/restore/close buttons box.
+  GtkWidget* titlebar_right_buttons_vbox_;
+
+  // HBoxes that contains the actual min/max/close buttons.
+  GtkWidget* titlebar_right_buttons_hbox_;
+
+  // The icon and page title.
+  GtkWidget* icon_;
+  GtkWidget* title_;
+
+  // The buttons.
+  scoped_ptr<CustomDrawButton> close_button_;
+  scoped_ptr<CustomDrawButton> minimize_button_;
+  scoped_ptr<CustomDrawButton> restore_button_;
+
+  TitlebarThrobAnimation throbber_;
+  GtkThemeService* theme_service_;
+
+  DISALLOW_COPY_AND_ASSIGN(PanelTitlebarGtk);
+};
+
+#endif  // CHROME_BROWSER_UI_PANELS_PANEL_TITLEBAR_GTK_H_