// Copyright (c) 2011 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_DROPDOWN_BAR_VIEW_H_ #define CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_VIEW_H_ #pragma once #include "chrome/browser/ui/views/dropdown_bar_host.h" #include "chrome/browser/ui/views/dropdown_bar_host_delegate.h" #include "chrome/browser/ui/views/accessible_pane_view.h" namespace gfx { class Canvas; } // namespace gfx //////////////////////////////////////////////////////////////////////////////// // // The DropdownBarView is an abstract view to draw the UI controls of the // DropdownBarHost. // //////////////////////////////////////////////////////////////////////////////// class DropdownBarView : public AccessiblePaneView, public DropdownBarHostDelegate { public: explicit DropdownBarView(DropdownBarHost* host); virtual ~DropdownBarView(); // Updates the view to let it know where the host is clipping the // dropdown widget (while animating the opening or closing of the widget). virtual void SetAnimationOffset(int offset) OVERRIDE; // Returns the offset used while animating. int animation_offset() const { return animation_offset_; } protected: // Returns the DropdownBarHost that manages this view. DropdownBarHost* host() const { return host_; } // Assign border bitmaps for this drop down instance. void SetDialogBorderBitmaps(const SkBitmap* dialog_left, const SkBitmap* dialog_middle, const SkBitmap* dialog_right); // Paints the offset toolbar background over the widget area and returns the // bounds of the widget. gfx::Rect PaintOffsetToolbarBackground(gfx::Canvas* canvas); // Paint the border for the drop down dialog given the ends and middle // bitmaps. void PaintDialogBorder(gfx::Canvas* canvas, const gfx::Rect& bounds) const; // Special paint code for the edges when the drop down bar is animating. void PaintAnimatingEdges(gfx::Canvas* canvas, const gfx::Rect& bounds) const; // The dialog border bitmaps. const SkBitmap* dialog_left_; const SkBitmap* dialog_middle_; const SkBitmap* dialog_right_; private: // The dropdown bar host that controls this view. DropdownBarHost* host_; // While animating, the host clips the widget and draws only the bottom // part of it. The view needs to know the pixel offset at which we are drawing // the widget so that we can draw the curved edges that attach to the toolbar // in the right location. int animation_offset_; DISALLOW_COPY_AND_ASSIGN(DropdownBarView); }; #endif // CHROME_BROWSER_UI_VIEWS_DROPDOWN_BAR_VIEW_H_