ofxOuiMultiSlider.hpp

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/*
 * ofxOuiMultiSlider.hpp
 *
 * MultiSlider
 *
 * This code has been authored by Jules Francoise <jfrancoi@sfu.ca>
 * during his postdoc contract at Simon Fraser University (MovingStories
 * project).
 * See:
 *    http://julesfrancoise.com/
 *    http://movingstories.ca/
 *
 * Copyright (C) 2016 Jules Francoise.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 */

#ifndef ofxOuiMultiSlider_hpp
#define ofxOuiMultiSlider_hpp

#include "ofxOuiComponent.hpp"

namespace ofxOui {

class MultiSlider : public Component {
  public:
    enum class Layout { Horizontal, Vertical };

    enum class Origin { Lower, Upper, Zero };

    class ValueEvent : public ofEventArgs {
      public:
        ValueEvent(MultiSlider* sender_, int index_, float value_);

        MultiSlider* sender;

        int index;

        float value;
    };

    template <typename T, typename args, class ListenerClass>
    void onEditSlider(T* owner, void (ListenerClass::*listenerMethod)(args)) {
        using namespace std::placeholders;
        if (owner)
            multislider_event_callback_ = std::bind(listenerMethod, owner, _1);
        else
            multislider_event_callback_ = nullptr;
    }

    MultiSlider(int x_ = 0, int y_ = 0, int width_ = 0, int height_ = 0);

    virtual ~MultiSlider();

    virtual void update();

    vector<float> values;

    float min = 0.;

    float max = 1.;

    Layout layout = Layout::Horizontal;

    Origin origin = Origin::Lower;

  protected:
    virtual void drawLabel();
    void clipValues();
    virtual void mouseDragged(ofMouseEventArgs& e);
    virtual void mousePressed(ofMouseEventArgs& e);

    ofRectangle slider_rect_;
    bool dragging_ = false;
    ofVec2f previous_position_;
    std::function<void(MultiSlider::ValueEvent&)> multislider_event_callback_;
};
}

#endif