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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-
/*
* Copyright (C) 2012 Canonical Ltd
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authored by: Brandon Schaefer <brandon.schaefer@canonical.com>
*/
#ifndef VSCROLLBAR_OVERLAY_WINDOW_H
#define VSCROLLBAR_OVERLAY_WINDOW_H
#include <Nux/Nux.h>
#include <Nux/BaseWindow.h>
#include <NuxCore/Animation.h>
namespace unity
{
class VScrollBarOverlayWindow : public nux::BaseWindow
{
public:
VScrollBarOverlayWindow(nux::Geometry const& geo);
nux::Property<double> scale;
void UpdateGeometry(nux::Geometry const& geo);
void SetThumbOffsetY(int y);
void MouseDown();
void MouseUp();
void MouseNear();
void MouseBeyond();
void MouseEnter();
void MouseLeave();
void ThumbInsideSlider();
void ThumbOutsideSlider();
void PageUpAction();
void PageDownAction();
bool IsMouseInsideThumb(int y) const;
bool IsMouseBeingDragged() const;
int GetThumbHeight() const;
int GetThumbOffsetY() const;
nux::Geometry GetThumbGeometry() const;
void ResetStates();
protected:
virtual void Draw(nux::GraphicsEngine& graphics_engine, bool force_draw);
private:
enum class ThumbAction : unsigned int
{
NONE,
DRAGGING,
PAGE_UP,
PAGE_DOWN
};
enum ThumbState
{
NONE = 1 << 0,
MOUSE_DOWN = 1 << 1,
MOUSE_NEAR = 1 << 2,
MOUSE_INSIDE = 1 << 3,
INSIDE_SLIDER = 1 << 4
};
void MouseDragging();
void UpdateMouseOffsetX();
void UpdateContentGeometry();
int GetValidOffsetYValue(int y) const;
void ShouldShow();
void ShouldHide();
void UpdateTexture();
nux::Geometry content_size_;
nux::ObjectPtr<nux::BaseTexture> thumb_texture_;
int content_offset_x_;
int mouse_offset_y_;
void AddState(ThumbState const& state);
void RemoveState(ThumbState const& state);
bool HasState(ThumbState const& state) const;
unsigned int current_state_;
ThumbAction current_action_;
nux::animation::AnimateValue<double> show_animator_;
};
} // namespace unity
#endif // VSCROLLBAR_OVERLAY_WINDOW_H
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