Initial release
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// This file is part of VSTGUI. It is subject to the license terms
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// in the LICENSE file found in the top-level directory of this
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// distribution and at http://github.com/steinbergmedia/vstgui/LICENSE
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#pragma once
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#include "ccontrol.h"
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#include "../cbitmap.h"
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#include "../ccolor.h"
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#include "../clinestyle.h"
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namespace VSTGUI {
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//-----------------------------------------------------------------------------
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class CKnobBase : public CControl, protected CMouseWheelEditingSupport
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{
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public:
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//-----------------------------------------------------------------------------
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/// @name CKnobBase Methods
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//-----------------------------------------------------------------------------
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//@{
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virtual void valueToPoint (CPoint& point) const;
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virtual float valueFromPoint (CPoint& point) const;
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virtual void setStartAngle (float val);
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virtual float getStartAngle () const { return startAngle; }
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virtual void setRangeAngle (float val);
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virtual float getRangeAngle () const { return rangeAngle; }
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virtual void setZoomFactor (float val) { zoomFactor = val; }
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virtual float getZoomFactor () const { return zoomFactor; }
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virtual CCoord getInsetValue () const { return inset; }
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virtual void setInsetValue (CCoord val) { inset = val; }
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virtual void setKnobRange (float val) { if (val > 0.f) knobRange = val; }
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virtual float getKnobRange () const { return knobRange; }
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//@}
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// overrides
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void onMouseWheelEvent (MouseWheelEvent& event) override;
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void onKeyboardEvent (KeyboardEvent& event) override;
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void setViewSize (const CRect &rect, bool invalid = true) override;
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bool sizeToFit () override;
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void setMin (float val) override;
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void setMax (float val) override;
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CMouseEventResult onMouseDown (CPoint& where, const CButtonState& buttons) override;
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CMouseEventResult onMouseUp (CPoint& where, const CButtonState& buttons) override;
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CMouseEventResult onMouseMoved (CPoint& where, const CButtonState& buttons) override;
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CMouseEventResult onMouseCancel () override;
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CLASS_METHODS_VIRTUAL(CKnobBase, CControl)
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protected:
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CKnobBase (const CRect& size, IControlListener* listener, int32_t tag, CBitmap* background);
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CKnobBase (const CKnobBase& knob);
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void compute ();
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float startAngle, rangeAngle;
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float zoomFactor;
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float knobRange;
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CCoord inset;
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private:
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struct MouseEditingState;
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MouseEditingState& getMouseEditingState ();
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void clearMouseEditingState ();
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};
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//-----------------------------------------------------------------------------
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// CKnob Declaration
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//! @brief a knob control
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/// @ingroup controls
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//-----------------------------------------------------------------------------
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class CKnob : public CKnobBase
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{
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public:
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enum DrawStyle {
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kLegacyHandleLineDrawing = 0,
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kHandleCircleDrawing = 1 << 0,
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kCoronaDrawing = 1 << 1,
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kCoronaFromCenter = 1 << 2,
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kCoronaInverted = 1 << 3,
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kCoronaLineDashDot = 1 << 4,
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kCoronaOutline = 1 << 5,
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kCoronaLineCapButt = 1 << 6,
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kSkipHandleDrawing = 1 << 7,
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};
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CKnob (const CRect& size, IControlListener* listener, int32_t tag, CBitmap* background, CBitmap* handle, const CPoint& offset = CPoint (0, 0), int32_t drawStyle = kLegacyHandleLineDrawing);
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CKnob (const CKnob& knob);
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//-----------------------------------------------------------------------------
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/// @name CKnob Methods
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//-----------------------------------------------------------------------------
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//@{
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int32_t getDrawStyle () const { return drawStyle; }
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virtual void setDrawStyle (int32_t style);
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CColor getCoronaColor () const { return coronaColor; }
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virtual void setCoronaColor (CColor color);
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CCoord getCoronaInset () const { return coronaInset; }
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virtual void setCoronaInset (CCoord inset);
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CColor getColorShadowHandle () const { return colorShadowHandle; }
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virtual void setColorShadowHandle (CColor color);
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CColor getColorHandle () const { return colorHandle; }
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virtual void setColorHandle (CColor color);
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CCoord getHandleLineWidth () const { return handleLineWidth; }
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virtual void setHandleLineWidth (CCoord width);
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CCoord getCoronaOutlineWidthAdd () const { return coronaOutlineWidthAdd; }
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virtual void setCoronaOutlineWidthAdd (CCoord width);
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const CLineStyle::CoordVector& getCoronaDashDotLengths () const;
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virtual void setCoronaDashDotLengths (const CLineStyle::CoordVector& lengths);
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CBitmap* getHandleBitmap () const { return pHandle; }
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void setHandleBitmap (CBitmap* bitmap);
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//@}
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// overrides
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void draw (CDrawContext* pContext) override;
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bool getFocusPath (CGraphicsPath& outPath) override;
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bool drawFocusOnTop () override;
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CLASS_METHODS(CKnob, CKnobBase)
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protected:
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~CKnob () noexcept override;
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virtual void drawHandle (CDrawContext* pContext);
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virtual void drawCoronaOutline (CDrawContext* pContext) const;
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virtual void drawCorona (CDrawContext* pContext) const;
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virtual void drawHandleAsCircle (CDrawContext* pContext) const;
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virtual void drawHandleAsLine (CDrawContext* pContext) const;
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static void addArc (CGraphicsPath* path, const CRect& r, double startAngle, double sweepAngle);
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CPoint offset;
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int32_t drawStyle;
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CColor colorHandle, colorShadowHandle, coronaColor;
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CCoord handleLineWidth;
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CCoord coronaInset;
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CCoord coronaOutlineWidthAdd;
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CLineStyle coronaLineStyle;
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CBitmap* pHandle;
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};
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//-----------------------------------------------------------------------------
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// CAnimKnob Declaration
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//! @brief a bitmap knob control
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/// @ingroup controls uses_multi_frame_bitmaps
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//-----------------------------------------------------------------------------
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class CAnimKnob : public CKnobBase,
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public MultiFrameBitmapView<CAnimKnob>
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#if VSTGUI_ENABLE_DEPRECATED_METHODS
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,
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public IMultiBitmapControl
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#endif
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{
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public:
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CAnimKnob (const CRect& size, IControlListener* listener, int32_t tag, CBitmap* background);
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CAnimKnob (const CAnimKnob& knob);
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#if VSTGUI_ENABLE_DEPRECATED_METHODS
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CAnimKnob (const CRect& size, IControlListener* listener, int32_t tag, int32_t subPixmaps,
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CCoord heightOfOneImage, CBitmap* background, const CPoint& offset = CPoint (0, 0));
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void setHeightOfOneImage (const CCoord& height) override;
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void setNumSubPixmaps (int32_t numSubPixmaps) override
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{
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IMultiBitmapControl::setNumSubPixmaps (numSubPixmaps);
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invalid ();
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}
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#endif
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//-----------------------------------------------------------------------------
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/// @name CAnimKnob Methods
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//-----------------------------------------------------------------------------
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//@{
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void setInverseBitmap (bool val) { bInverseBitmap = val; }
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bool getInverseBitmap () const { return bInverseBitmap; }
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//@}
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// overrides
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void draw (CDrawContext* pContext) override;
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bool sizeToFit () override;
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void setBackground (CBitmap* background) override;
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CLASS_METHODS(CAnimKnob, CKnobBase)
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protected:
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~CAnimKnob () noexcept override = default;
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bool bInverseBitmap;
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};
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} // VSTGUI
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