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// 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 VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
#define VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
#pragma once
#include "ui/gfx/native_theme.h"
#include "ui/gfx/point.h"
#include "views/controls/button/button.h"
#include "views/controls/scrollbar/base_scroll_bar.h"
#include "views/controls/scrollbar/native_scroll_bar_wrapper.h"
#include "views/view.h"
namespace gfx {
class Canvas;
}
namespace views {
class NativeScrollBar;
// Views implementation for the scrollbar.
class VIEWS_EXPORT NativeScrollBarViews : public BaseScrollBar,
public ButtonListener,
public NativeScrollBarWrapper {
public:
static const char kViewClassName[];
// Creates new scrollbar, either horizontal or vertical.
explicit NativeScrollBarViews(NativeScrollBar* native_scroll_bar);
virtual ~NativeScrollBarViews();
private:
// View overrides:
virtual void Layout();
virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
virtual gfx::Size GetPreferredSize() OVERRIDE;
virtual std::string GetClassName() const OVERRIDE;
// ScrollBar overrides:
virtual int GetLayoutSize() const OVERRIDE;
// BaseScrollBar overrides:
virtual void ScrollToPosition(int position);
virtual int GetScrollIncrement(bool is_page, bool is_positive);
// BaseButton::ButtonListener overrides:
virtual void ButtonPressed(Button* sender,
const views::Event& event) OVERRIDE;
// NativeScrollBarWrapper overrides:
virtual int GetPosition() const;
virtual View* GetView();
virtual void Update(int viewport_size, int content_size, int current_pos);
// Returns the area for the track. This is the area of the scrollbar minus
// the size of the arrow buttons.
virtual gfx::Rect GetTrackBounds() const OVERRIDE;
// The NativeScrollBar we are bound to.
NativeScrollBar* native_scroll_bar_;
// The scroll bar buttons (Up/Down, Left/Right).
Button* prev_button_;
Button* next_button_;
gfx::NativeTheme::ExtraParams params_;
gfx::NativeTheme::Part part_;
gfx::NativeTheme::State state_;
DISALLOW_COPY_AND_ASSIGN(NativeScrollBarViews);
};
} // namespace views
#endif // VIEWS_CONTROLS_SCROLLBAR_NATIVE_SCROLL_BAR_VIEWS_H_
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