Carla/source/modules/juce_gui_basics/buttons/juce_ShapeButton.h

/*
  ==============================================================================

   This file is part of the JUCE library.
   Copyright (c) 2017 - ROLI Ltd.

   JUCE is an open source library subject to commercial or open-source
   licensing.

   By using JUCE, you agree to the terms of both the JUCE 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-privacy-policy

   Or: You may also use this code under the terms of the GPL v3 (see
   www.gnu.org/licenses).

   JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
   EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
   DISCLAIMED.

  ==============================================================================
*/

namespace juce
{

//==============================================================================
/**
    A button that contains a filled shape.

    @see Button, ImageButton, TextButton, ArrowButton
*/
class JUCE_API  ShapeButton  : public Button
{
public:
    //==============================================================================
    /** Creates a ShapeButton.

        @param name             a name to give the component - see Component::setName()
        @param normalColour     the colour to fill the shape with when the mouse isn't over
        @param overColour       the colour to use when the mouse is over the shape
        @param downColour       the colour to use when the button is in the pressed-down state
    */
    ShapeButton (const String& name,
                 Colour normalColour,
                 Colour overColour,
                 Colour downColour);

    /** Destructor. */
    ~ShapeButton();

    //==============================================================================
    /** Sets the shape to use.

        @param newShape                 the shape to use
        @param resizeNowToFitThisShape  if true, the button will be resized to fit the shape's bounds
        @param maintainShapeProportions if true, the shape's proportions will be kept fixed when
                                        the button is resized
        @param hasDropShadow            if true, the button will be given a drop-shadow effect
    */
    void setShape (const Path& newShape,
                   bool resizeNowToFitThisShape,
                   bool maintainShapeProportions,
                   bool hasDropShadow);

    /** Set the colours to use for drawing the shape.

        @param normalColour     the colour to fill the shape with when the mouse isn't over
        @param overColour       the colour to use when the mouse is over the shape
        @param downColour       the colour to use when the button is in the pressed-down state
    */
    void setColours (Colour normalColour,
                     Colour overColour,
                     Colour downColour);

    /** Sets the colours to use for drawing the shape when the button's toggle state is 'on'. To enable this behaviour, use the
        shouldUseOnColours() method.

        @param normalColourOn   the colour to fill the shape with when the mouse isn't over and the button's toggle state is 'on'
        @param overColourOn     the colour to use when the mouse is over the shape and the button's toggle state is 'on'
        @param downColourOn     the colour to use when the button is in the pressed-down state and the button's toggle state is 'on'
     */
    void setOnColours (Colour normalColourOn,
                       Colour overColourOn,
                       Colour downColourOn);

    /** Set whether the button should use the 'on' set of colours when its toggle state is 'on'.
        By default these will be the same as the normal colours but the setOnColours method can be
        used to provide a different set of colours.
    */
    void shouldUseOnColours (bool shouldUse);

    /** Sets up an outline to draw around the shape.

        @param outlineColour        the colour to use
        @param outlineStrokeWidth   the thickness of line to draw
    */
    void setOutline (Colour outlineColour, float outlineStrokeWidth);

    /** This lets you specify a border to be left around the edge of the button when
        drawing the shape.
    */
    void setBorderSize (BorderSize<int> border);

    /** @internal */
    void paintButton (Graphics&, bool isMouseOverButton, bool isButtonDown) override;

private:
    //==============================================================================
    Colour normalColour,   overColour,   downColour,
           normalColourOn, overColourOn, downColourOn, outlineColour;
    bool useOnColours;
    DropShadowEffect shadow;
    Path shape;
    BorderSize<int> border;
    bool maintainShapeProportions;
    float outlineWidth;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ShapeButton)
};

} // namespace juce