74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
/**********************************************************************
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Audacity: A Digital Audio Editor
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EnvelopeEditor.h
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Paul Licameli split this from Envelope.h
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**********************************************************************/
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#ifndef __AUDACITY_ENVELOPE_EDITOR__
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#define __AUDACITY_ENVELOPE_EDITOR__
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class wxMouseEvent;
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class wxRect;
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class Envelope;
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struct TrackPanelDrawingContext;
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class ZoomInfo;
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// A class that holds state for the duration of dragging
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// of an envelope point.
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class AUDACITY_DLL_API EnvelopeEditor
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{
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public:
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static void DrawPoints(
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const Envelope &env,
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TrackPanelDrawingContext &context,
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const wxRect & r,
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bool dB, double dBRange,
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float zoomMin, float zoomMax, bool mirrored);
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EnvelopeEditor(Envelope &envelope, bool mirrored);
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~EnvelopeEditor();
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// Event Handlers
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// Each of these returns true if the envelope needs to be redrawn
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bool MouseEvent(const wxMouseEvent & event, wxRect & r,
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const ZoomInfo &zoomInfo, bool dB, double dBRange,
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float zoomMin = -1.0, float zoomMax = 1.0);
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private:
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bool HandleMouseButtonDown(const wxMouseEvent & event, wxRect & r,
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const ZoomInfo &zoomInfo, bool dB, double dBRange,
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float zoomMin = -1.0, float zoomMax = 1.0);
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bool HandleDragging(const wxMouseEvent & event, wxRect & r,
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const ZoomInfo &zoomInfo, bool dB, double dBRange,
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float zoomMin = -1.0, float zoomMax = 1.0, float eMin = 0., float eMax = 2.);
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bool HandleMouseButtonUp();
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private:
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float ValueOfPixel(int y, int height, bool upper,
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bool dB, double dBRange,
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float zoomMin, float zoomMax);
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void MoveDragPoint(const wxMouseEvent & event, wxRect & r,
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const ZoomInfo &zoomInfo, bool dB, double dBRange,
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float zoomMin, float zoomMax);
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Envelope &mEnvelope;
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const bool mMirrored;
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/** \brief Number of pixels contour is from the true envelope. */
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int mContourOffset;
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// double mInitialVal;
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// int mInitialY;
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bool mUpper;
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int mButton;
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bool mDirty;
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};
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#endif
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