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

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

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2020 - Raw Material Software Limited

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

   For this technical preview, this file is not subject to commercial licensing.

   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 showing an underlined weblink, that will launch the link
    when it's clicked.

    @see Button

    @tags{GUI}
*/
class JUCE_API  HyperlinkButton  : public Button
{
public:
    //==============================================================================
    /** Creates a HyperlinkButton.

        @param linkText     the text that will be displayed in the button - this is
                            also set as the Component's name, but the text can be
                            changed later with the Button::setButtonText() method
        @param linkURL      the URL to launch when the user clicks the button
    */
    HyperlinkButton (const String& linkText,
                     const URL& linkURL);

    /** Creates a HyperlinkButton. */
    HyperlinkButton();

    /** Destructor. */
    ~HyperlinkButton() override;

    //==============================================================================
    /** Changes the font to use for the text.

        If resizeToMatchComponentHeight is true, the font's height will be adjusted
        to match the size of the component.
    */
    void setFont (const Font& newFont,
                  bool resizeToMatchComponentHeight,
                  Justification justificationType = Justification::horizontallyCentred);

    //==============================================================================
    /** A set of colour IDs to use to change the colour of various aspects of the link.

        These constants can be used either via the Component::setColour(), or LookAndFeel::setColour()
        methods.

        @see Component::setColour, Component::findColour, LookAndFeel::setColour, LookAndFeel::findColour
    */
    enum ColourIds
    {
        textColourId             = 0x1001f00, /**< The colour to use for the URL text. */
    };

    //==============================================================================
    /** Changes the URL that the button will trigger. */
    void setURL (const URL& newURL) noexcept;

    /** Returns the URL that the button will trigger. */
    const URL& getURL() const noexcept                          { return url; }

    //==============================================================================
    /** Resizes the button horizontally to fit snugly around the text.

        This won't affect the button's height.
    */
    void changeWidthToFitText();

    //==============================================================================
    /** Sets the style of justification to be used for positioning the text.
        (The default is Justification::centred)
    */
    void setJustificationType (Justification justification);

    /** Returns the type of justification, as set in setJustificationType(). */
    Justification getJustificationType() const noexcept         { return justification; }

protected:
    //==============================================================================
    /** @internal */
    void clicked() override;
    /** @internal */
    void colourChanged() override;
    /** @internal */
    void paintButton (Graphics&, bool, bool) override;

private:
    //==============================================================================
    using Button::clicked;
    Font getFontToUse() const;

    //==============================================================================
    URL url;
    Font font;
    bool resizeFont;
    Justification justification;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (HyperlinkButton)
};

} // namespace juce