juce_LookAndFeelHelpers.h

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 /*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   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 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-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::detail
{
 
struct LookAndFeelHelpers
{
    LookAndFeelHelpers() = delete;
 
    static Colour createBaseColour (Colour buttonColour,
                                    bool hasKeyboardFocus,
                                    bool shouldDrawButtonAsHighlighted,
                                    bool shouldDrawButtonAsDown) noexcept
    {
        const float sat = hasKeyboardFocus ? 1.3f : 0.9f;
        const Colour baseColour (buttonColour.withMultipliedSaturation (sat));
 
        if (shouldDrawButtonAsDown)        return baseColour.contrasting (0.2f);
        if (shouldDrawButtonAsHighlighted) return baseColour.contrasting (0.1f);
 
        return baseColour;
    }
 
    static TextLayout layoutTooltipText (const String& text, Colour colour) noexcept
    {
        const float tooltipFontSize = 13.0f;
        const int maxToolTipWidth = 400;
 
        AttributedString s;
        s.setJustification (Justification::centred);
        s.append (text, Font (tooltipFontSize, Font::bold), colour);
 
        TextLayout tl;
        tl.createLayoutWithBalancedLineLengths (s, (float) maxToolTipWidth);
        return tl;
    }
};
 
} // namespace juce::detail