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/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2012-2014 Filipe Coelho <falktx@falktx.com>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef DGL_IMAGE_KNOB_HPP_INCLUDED
#define DGL_IMAGE_KNOB_HPP_INCLUDED
#include "Image.hpp"
#include "Widget.hpp"
START_NAMESPACE_DGL
// -----------------------------------------------------------------------
class ImageKnob : public Widget
{
public:
enum Orientation {
Horizontal,
Vertical
};
class Callback
{
public:
virtual ~Callback() {}
virtual void imageKnobDragStarted(ImageKnob* imageKnob) = 0;
virtual void imageKnobDragFinished(ImageKnob* imageKnob) = 0;
virtual void imageKnobValueChanged(ImageKnob* imageKnob, float value) = 0;
};
explicit ImageKnob(Window& parent, const Image& image, Orientation orientation = Vertical) noexcept;
explicit ImageKnob(Widget* widget, const Image& image, Orientation orientation = Vertical) noexcept;
explicit ImageKnob(const ImageKnob& imageKnob);
ImageKnob& operator=(const ImageKnob& imageKnob);
~ImageKnob() override;
float getValue() const noexcept;
void setDefault(float def) noexcept;
void setRange(float min, float max) noexcept;
void setStep(float step) noexcept;
void setValue(float value, bool sendCallback = false) noexcept;
void setUsingLogScale(bool yesNo) noexcept;
void setCallback(Callback* callback) noexcept;
void setOrientation(Orientation orientation) noexcept;
void setRotationAngle(int angle);
protected:
void onDisplay() override;
bool onMouse(const MouseEvent&) override;
bool onMotion(const MotionEvent&) override;
bool onScroll(const ScrollEvent&) override;
private:
Image fImage;
float fMinimum;
float fMaximum;
float fStep;
float fValue;
float fValueDef;
float fValueTmp;
bool fUsingDefault;
bool fUsingLog;
Orientation fOrientation;
int fRotationAngle;
bool fDragging;
int fLastX;
int fLastY;
Callback* fCallback;
bool fIsImgVertical;
uint fImgLayerSize;
uint fImgLayerCount;
bool fIsReady;
GLuint fTextureId;
float _logscale(float value) const;
float _invlogscale(float value) const;
DISTRHO_LEAK_DETECTOR(ImageKnob)
};
// -----------------------------------------------------------------------
END_NAMESPACE_DGL
#endif // DGL_IMAGE_KNOB_HPP_INCLUDED
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