blob: 04acbae2ea4a70e85c80776566448ca22db3b142 [file] [log] [blame]
// Copyright (c) 2009 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.
#pragma once
#include "views/controls/native_control_gtk.h"
#include "views/controls/scrollbar/native_scroll_bar_wrapper.h"
namespace views {
class ScrollBarContainer;
// NativeScrollBarGtk
// A View subclass that wraps a Native gtk scrollbar control.
// A scrollbar is either horizontal or vertical.
class NativeScrollBarGtk : public NativeControlGtk,
public NativeScrollBarWrapper {
// Creates new scrollbar, either horizontal or vertical.
explicit NativeScrollBarGtk(NativeScrollBar* native_scroll_bar);
virtual ~NativeScrollBarGtk();
// Overridden from View for layout purpose.
virtual void Layout();
virtual gfx::Size GetPreferredSize();
// Overridden from View for keyboard UI purpose.
virtual bool OnKeyPressed(const KeyEvent& event);
virtual bool OnMouseWheel(const MouseWheelEvent& e);
// Overridden from NativeControlGtk.
virtual void CreateNativeControl();
// Overridden from NativeScrollBarWrapper.
virtual int GetPosition() const;
virtual View* GetView();
virtual void Update(int viewport_size, int content_size, int current_pos);
// Moves the scrollbar by the given value. Negative value is allowed.
// (moves upward)
void MoveBy(int o);
// Moves the scrollbar by the page (viewport) size.
void MovePage(bool positive);
// Moves the scrollbar by predefined step size.
void MoveStep(bool positive);
// Moves the scrollbar to the given position. MoveTo(0) moves it to the top.
void MoveTo(int p);
// Moves the scrollbar to the end.
void MoveToBottom();
// Invoked when the scrollbar's position is changed.
void ValueChanged();
static void CallValueChanged(GtkWidget* widget,
NativeScrollBarGtk* scroll_bar);
// The NativeScrollBar we are bound to.
NativeScrollBar* native_scroll_bar_;
} // namespace views