WaveClipAdjustBorderHandle.h

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/*!********************************************************************
*
 Audacity: A Digital Audio Editor
 
 WaveClipAdjustBorderHandle.h
 
 Vitaly Sverchinsky
 
 **********************************************************************/
 
#pragma once 
 
#include "UIHandle.h"
#include "WaveClip.h"
 
class WaveChannelView;
class WaveTrack;
 
class WaveClipAdjustBorderHandle final : public UIHandle
{
public:
   class AdjustPolicy;
private:
 
    static constexpr int BoundaryThreshold = 5;
 
    static HitTestPreview HitPreviewTrim(const AudacityProject*, bool unsafe, bool isLeftBorder);
    static HitTestPreview HitPreviewStretch(const AudacityProject*, bool unsafe, bool isLeftBorder);
 
    std::unique_ptr<AdjustPolicy> mAdjustPolicy{};
    std::shared_ptr<const WaveTrack> mpTrack;
    bool mIsStretchMode;
    bool mIsLeftBorder;
    
public:
    WaveClipAdjustBorderHandle(std::unique_ptr<AdjustPolicy>& adjustPolicy,
        std::shared_ptr<const WaveTrack> pTrack,
        bool stretchMode, bool leftBorder);
    ~WaveClipAdjustBorderHandle() override;
 
   std::shared_ptr<const Track> FindTrack() const override;
 
    WaveClipAdjustBorderHandle(WaveClipAdjustBorderHandle&&) noexcept;
    WaveClipAdjustBorderHandle& operator = (WaveClipAdjustBorderHandle&&) noexcept;
 
    static UIHandlePtr HitAnywhere(std::weak_ptr<WaveClipAdjustBorderHandle>& holder,
        const std::shared_ptr<WaveTrack>& waveTrack,
        const AudacityProject* pProject,
        const TrackPanelMouseState& state);
 
    static UIHandlePtr HitTest(std::weak_ptr<WaveClipAdjustBorderHandle>& holder,
        WaveChannelView& view, const AudacityProject* pProject,
        const TrackPanelMouseState& state);
 
    HitTestPreview Preview(const TrackPanelMouseState& mouseState, AudacityProject* pProject) override;
 
    Result Click
    (const TrackPanelMouseEvent& event, AudacityProject* pProject) override;
 
    Result Drag
    (const TrackPanelMouseEvent& event, AudacityProject* pProject) override;
 
    Result Release
    (const TrackPanelMouseEvent& event, AudacityProject* pProject,
        wxWindow* pParent) override;
 
    Result Cancel(AudacityProject* pProject) override;
 
    // TrackPanelDrawable implementation
 
    void Draw(TrackPanelDrawingContext &context,
        const wxRect &rect,
        unsigned iPass ) override;
 
    wxRect DrawingArea(TrackPanelDrawingContext&,
        const wxRect &rect,
        const wxRect &panelRect,
        unsigned iPass) override;
};