JUCE/modules/juce_gui_basics/buttons/juce_HyperlinkButton.cpp

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

   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
{

HyperlinkButton::HyperlinkButton (const String& linkText,
                                  const URL& linkURL)
   : Button (linkText),
     url (linkURL),
     font (14.0f, Font::underlined),
     resizeFont (true),
     justification (Justification::centred)
{
    setMouseCursor (MouseCursor::PointingHandCursor);
    setTooltip (linkURL.toString (false));
}

HyperlinkButton::HyperlinkButton()
   : Button (String()),
     font (14.0f, Font::underlined),
     resizeFont (true),
     justification (Justification::centred)
{
    setMouseCursor (MouseCursor::PointingHandCursor);
}

HyperlinkButton::~HyperlinkButton()
{
}

//==============================================================================
void HyperlinkButton::setFont (const Font& newFont,
                               const bool resizeToMatchComponentHeight,
                               Justification justificationType)
{
    font = newFont;
    resizeFont = resizeToMatchComponentHeight;
    justification = justificationType;
    repaint();
}

void HyperlinkButton::setURL (const URL& newURL) noexcept
{
    url = newURL;
    setTooltip (newURL.toString (false));
}

Font HyperlinkButton::getFontToUse() const
{
    if (resizeFont)
        return font.withHeight (getHeight() * 0.7f);

    return font;
}

void HyperlinkButton::changeWidthToFitText()
{
    setSize (getFontToUse().getStringWidth (getButtonText()) + 6, getHeight());
}

void HyperlinkButton::setJustificationType (Justification newJustification)
{
    if (justification != newJustification)
    {
        justification = newJustification;
        repaint();
    }
}

void HyperlinkButton::colourChanged()
{
    repaint();
}

//==============================================================================
void HyperlinkButton::clicked()
{
    if (url.isWellFormed())
        url.launchInDefaultBrowser();
}

void HyperlinkButton::paintButton (Graphics& g,
                                   bool isMouseOverButton,
                                   bool isButtonDown)
{
    const Colour textColour (findColour (textColourId));

    if (isEnabled())
        g.setColour ((isMouseOverButton) ? textColour.darker ((isButtonDown) ? 1.3f : 0.4f)
                                         : textColour);
    else
        g.setColour (textColour.withMultipliedAlpha (0.4f));

    g.setFont (getFontToUse());

    g.drawText (getButtonText(), getLocalBounds().reduced (1, 0),
                justification.getOnlyHorizontalFlags() | Justification::verticallyCentred,
                true);
}

} // namespace juce