[Refactor] Move code for painting the window header for browser windows out of ash

chrome/browser/ui/views/frame/browser_header_painter_ash.h

+// Copyright 2013 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_VIEWS_FRAME_BROWSER_HEADER_PAINTER_ASH_H_
+#define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_HEADER_PAINTER_ASH_H_
+
+#include "ash/frame/header_painter.h"
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"  // OVERRIDE
+#include "base/memory/scoped_ptr.h"
+#include "ui/gfx/animation/animation_delegate.h"
+
+class BrowserView;
+
+namespace ash {
+class FrameCaptionButtonContainerView;
+}
+
+namespace gfx {
+class ImageSkia;
+class Rect;
+class SlideAnimation;
+}
+namespace views {
+class View;
+class Widget;
+}
+
+// Helper class for painting the browser window header.
+class BrowserHeaderPainterAsh : public ash::HeaderPainter,
+                                public gfx::AnimationDelegate {
+ public:
+  BrowserHeaderPainterAsh();
+  virtual ~BrowserHeaderPainterAsh();
+
+  // BrowserHeaderPainterAsh does not take ownership of any of the parameters.
+  void Init(
+    views::Widget* frame,
+    BrowserView* browser_view,
+    views::View* header_view,
+    views::View* window_icon,
+    ash::FrameCaptionButtonContainerView* caption_button_container);
+
+  // ash::HeaderPainter overrides:
+  virtual int GetMinimumHeaderWidth() const OVERRIDE;
+  virtual void PaintHeader(gfx::Canvas* canvas, Mode mode) OVERRIDE;
+  virtual void LayoutHeader() OVERRIDE;
+  virtual int GetHeaderHeightForPainting() const OVERRIDE;
+  virtual void SetHeaderHeightForPainting(int height) OVERRIDE;
+  virtual void SchedulePaintForTitle() OVERRIDE;
+
+ private:
+  // gfx::AnimationDelegate override:
+  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
+
+  // Paints highlight around the edge of the header for restored windows.
+  void PaintHighlightForRestoredWindow(gfx::Canvas* canvas);
+
+  // Paints the title bar, primarily the title string.
+  void PaintTitleBar(gfx::Canvas* canvas);
+
+  // Sets |frame_image| and |frame_overlay_image| to the frame image and the
+  // frame overlay image respectivately which should be used to paint the
+  // header.
+  void GetFrameImages(Mode mode,
+                      gfx::ImageSkia* frame_image,
+                      gfx::ImageSkia* frame_overlay_image) const;
+
+  // Sets |frame_image| and |frame_overlay_image| to the frame image and the
+  // frame overlay image respectively that should be used to paint the header
+  // for tabbed browser windows.
+  void GetFrameImagesForTabbedBrowser(
+      Mode mode,
+      gfx::ImageSkia* frame_image,
+      gfx::ImageSkia* frame_overlay_image) const;
+
+  // Returns the frame image which should be used to paint the header for popup
+  // browser windows and for hosted app windows which show the toolbar.
+  gfx::ImageSkia GetFrameImageForNonTabbedBrowser(Mode mode) const;
+
+  // Updates the images used for the minimize, restore and close buttons.
+  void UpdateCaptionButtonImages();
+
+  // Returns bounds of the region in |view_| which is painted with the header
+  // images. The region is assumed to start at the top left corner of |view_|
+  // and to have the same width as |view_|.
+  gfx::Rect GetPaintedBounds() const;
+
+  // Returns the bounds for the title.
+  gfx::Rect GetTitleBounds() const;
+
+  views::Widget* frame_;
+
+  // Whether the header is for a tabbed browser window.
+  bool is_tabbed_;
+
+  // Whether the header is for an incognito browser window.
+  bool is_incognito_;
+
+  // The header view.
+  views::View* view_;
+
+  views::View* window_icon_;
+  ash::FrameCaptionButtonContainerView* caption_button_container_;
+  int painted_height_;
+
+  // Whether the header is painted for the first time.
+  bool initial_paint_;
+
+  // Whether the header should be painted as active.
+  Mode mode_;
+
+  scoped_ptr<gfx::SlideAnimation> activation_animation_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserHeaderPainterAsh);
+};
+
+#endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_HEADER_PAINTER_ASH_H_