DropComponent.h

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#pragma once
namespace krotos
{
    //==============================================================================
    class DropComponent : public Button, public DragAndDropTarget, private Value::Listener
    {
      public:
        DropComponent(const String& labelText, const String& kwidgetID = "");
 
        void resized() override;
 
        Label& getLabel();
 
        void setText(const String& labelText);
 
        void setLabelValue(Value& labelValue);
 
        void paintButton(Graphics& g, bool shouldDrawButtonAsHighlighted, bool shouldDrawButtonAsDown) override;
 
        //==============================================================================
        // These methods implement the DragAndDropTarget interface, and allow our component
        // to accept drag-and-drop of objects from other JUCE components..
 
        bool isInterestedInDragSource(const SourceDetails& /*dragSourceDetails*/) override;
 
        void itemDragEnter(const SourceDetails& /*dragSourceDetails*/) override;
 
        void itemDragMove(const SourceDetails& /*dragSourceDetails*/) override;
 
        void itemDragExit(const SourceDetails& /*dragSourceDetails*/) override;
 
        std::function<void(var desc)> onDropped;
 
        void itemDropped(const SourceDetails& dragSourceDetails) override;
 
        /* Returns the last drag and drop description this component receieved */
        var getDescription();
 
        String& getConnectedKwidgetID() { return m_connectedKwidgetID; }
 
        enum RoundedCorner
        {
            TopLeft = 0,
            TopRight,
            BottomLeft,
            BottomRight,
            Top,    // Top left and top right
            Bottom, // Bottom left and bottom right
            All,
            None
        };
 
        void setRoundedCorner(RoundedCorner cornerToRound, float cornerSize = 4.0f)
        {
            m_cornerToRound = cornerToRound;
            m_cornerSize = cornerSize;
        };
 
        void setArmed(bool isArmed);
 
        static const Identifier DragSource;
 
      private:
        Label m_label;
        String m_connectedKwidgetID{""};
 
        bool m_somethingIsBeingDraggedOver = false;
 
        var m_lastDesc;
 
        Value m_labelValue;
 
        RoundedCorner m_cornerToRound{RoundedCorner::All};
 
        void valueChanged(Value& value) override;
 
        float m_cornerSize{4.0f};
        const float m_defaultOpacity{0.5f}, m_hoverOpacity{1.0f}, m_hoverBrightnessAmount{0.055f},
                m_armedHoverBrightnessAmount{0.15f};
        bool m_armed{false};
 
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(DropComponent)
    };
} // namespace krotos