DiscreteButtonView.h

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/*
 * Copyright (c) 2019 pongasoft
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 *
 * @author Yan Pujante
 */
#pragma once

#include <pongasoft/VST/GUI/Params/GUIVstParameter.h>
#include "CustomControlView.h"

namespace pongasoft {
namespace VST {
namespace GUI {
namespace Views {

using namespace VSTGUI;
using namespace Params;

class DiscreteButtonView : public RawCustomControlView
{
public:
  explicit DiscreteButtonView(const CRect &iSize) : RawCustomControlView(iSize)
  {
    // off color is grey
    fBackColor = CColor{200, 200, 200};
  }

  // draw => does the actual drawing job
  void draw(CDrawContext *iContext) override;

  // input events (mouse/keyboard)
  CMouseEventResult onMouseDown(CPoint &where, const CButtonState &buttons) override;

  CMouseEventResult onMouseUp(CPoint &where, const CButtonState &buttons) override;

  CMouseEventResult onMouseCancel() override;

  int32_t onKeyDown(VstKeyCode &keyCode) override;

  int32_t onKeyUp(VstKeyCode &keyCode) override;

  // sizeToFit
  bool sizeToFit() override;

  // is on or off
  bool isOn() const;

  bool isOff() const { return !isOn(); }

  void setOn();

  // get/set frames (should be either 2 or 4) 4 includes the pressed state
  int getFrames() const { return fFrames; }

  void setFrames(int iFrames);

  // get/setOnColor (the off color is the back color...)
  CColor const &getOnColor() const { return fOnColor; }

  void setOnColor(CColor const &iColor) { fOnColor = iColor; }

  // get/setInverse (toggles which image is on and which is off)
  bool getInverse() const { return fInverse; }

  void setInverse(bool iInverse) { fInverse = iInverse; }

  int32 getStep() const { return fStep; }
  void setStep(int32 step);

  BitmapPtr getImage() const { return fImage; }
  void setImage(BitmapPtr iImage) { fImage = iImage; }

  void registerParameters() override;

protected:
  int fFrames{4};
  CColor fOnColor{kRedCColor};
  BitmapSPtr fImage{nullptr};
  bool fInverse{false};

  bool fPressed{false};

  int32 fStep{0};

public:
  class Creator : public CustomViewCreator<DiscreteButtonView, RawCustomControlView>
  {
  public:
    explicit Creator(char const *iViewName = nullptr, char const *iDisplayName = nullptr) :
      CustomViewCreator(iViewName, iDisplayName)
    {
      registerIntAttribute("frames", &DiscreteButtonView::getFrames, &DiscreteButtonView::setFrames);
      registerColorAttribute("on-color", &DiscreteButtonView::getOnColor, &DiscreteButtonView::setOnColor);
      registerBitmapAttribute("button-image", &DiscreteButtonView::getImage, &DiscreteButtonView::setImage);
      registerBooleanAttribute("inverse", &DiscreteButtonView::getInverse, &DiscreteButtonView::setInverse);
      registerIntegerAttribute<int32>("step", &DiscreteButtonView::getStep, &DiscreteButtonView::setStep);
    }
  };
};

}
}
}
}