JUCE/extras/Projucer/Source/ComponentEditor/Properties/jucer_FontPropertyComponent.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.

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

#pragma once


//==============================================================================
class FontPropertyComponent    : public ChoicePropertyComponent
{
public:
    FontPropertyComponent (const String& name)
        : ChoicePropertyComponent (name)
    {
        choices.add (getDefaultFont());
        choices.add (getDefaultSans());
        choices.add (getDefaultSerif());
        choices.add (getDefaultMono());
        choices.add (String());

        static StringArray fontNames;

        if (fontNames.size() == 0)
        {
            Array<Font> fonts;
            Font::findFonts (fonts);

            for (int i = 0; i < fonts.size(); ++i)
                fontNames.add (fonts[i].getTypefaceName());
        }

        choices.addArray (fontNames);
    }

    static String getDefaultFont()  { return "Default font"; }
    static String getDefaultSans()  { return "Default sans-serif font"; }
    static String getDefaultSerif() { return "Default serif font"; }
    static String getDefaultMono()  { return "Default monospaced font"; }

    //==============================================================================
    virtual void setTypefaceName (const String& newFontName) = 0;
    virtual String getTypefaceName() const = 0;

    //==============================================================================
    void setIndex (int newIndex)
    {
        String type (choices [newIndex]);

        if (type.isEmpty())
            type = getDefaultFont();

        if (getTypefaceName() != type)
            setTypefaceName (type);
    }

    int getIndex() const
    {
        return choices.indexOf (getTypefaceName());
    }

    static Font applyNameToFont (const String& typefaceName, const Font& font)
    {
        auto extraKerning = font.getExtraKerningFactor();

        if (typefaceName == getDefaultFont())  return Font (font.getHeight(), font.getStyleFlags()).withExtraKerningFactor (extraKerning);
        if (typefaceName == getDefaultSans())  return Font (Font::getDefaultSansSerifFontName(), font.getHeight(), font.getStyleFlags()).withExtraKerningFactor (extraKerning);
        if (typefaceName == getDefaultSerif()) return Font (Font::getDefaultSerifFontName(), font.getHeight(), font.getStyleFlags()).withExtraKerningFactor (extraKerning);
        if (typefaceName == getDefaultMono())  return Font (Font::getDefaultMonospacedFontName(), font.getHeight(), font.getStyleFlags()).withExtraKerningFactor (extraKerning);

        auto f = Font (typefaceName, font.getHeight(), font.getStyleFlags()).withExtraKerningFactor (extraKerning);

        if (f.getAvailableStyles().contains (font.getTypefaceStyle()))
            f.setTypefaceStyle (font.getTypefaceStyle());

        return f;
    }

    static String getTypefaceNameCode (const String& typefaceName)
    {
        if (typefaceName == getDefaultFont())   return {};
        if (typefaceName == getDefaultSans())   return "juce::Font::getDefaultSansSerifFontName(), ";
        if (typefaceName == getDefaultSerif())  return "juce::Font::getDefaultSerifFontName(), ";
        if (typefaceName == getDefaultMono())   return "juce::Font::getDefaultMonospacedFontName(), ";

        return "\"" + typefaceName + "\", ";
    }

    static String getFontStyleCode (const Font& font)
    {
        if (font.isBold() && font.isItalic())   return "juce::Font::bold | juce::Font::italic";
        if (font.isBold())                      return "juce::Font::bold";
        if (font.isItalic())                    return "juce::Font::italic";

        return "juce::Font::plain";
    }

    static String getCompleteFontCode (const Font& font, const String& typefaceName)
    {
        String s;

        s << "juce::Font ("
          << getTypefaceNameCode (typefaceName)
          << CodeHelpers::floatLiteral (font.getHeight(), 2)
          << ", ";

        if (font.getAvailableStyles().contains(font.getTypefaceStyle()))
            s << "juce::Font::plain).withTypefaceStyle ("
              << CodeHelpers::stringLiteral (font.getTypefaceStyle())
              << ")";
        else
            s << getFontStyleCode (font)
              << ")";

        if (font.getExtraKerningFactor() != 0.0f)
            s << ".withExtraKerningFactor ("
              << CodeHelpers::floatLiteral (font.getExtraKerningFactor(), 3)
              << ")";

        return s;
    }
};