Main.cpp

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/* Copyright (c) 2024-2025, Christian Ahrens
 *
 * This file is part of Mema <https://github.com/ChristianAhrens/Mema>
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 3.0 as published
 * by the Free Software Foundation.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#include <JuceHeader.h>
 
#include "MainComponent.h"
 
#include <CustomLookAndFeel.h>
 
 //==============================================================================
class MainApplication : public juce::JUCEApplication
{
public:
    //==============================================================================
    MainApplication() {}
 
    const String getApplicationName() override { return ProjectInfo::projectName; }
    const String getApplicationVersion() override { return ProjectInfo::versionString; }
    bool moreThanOneInstanceAllowed() override { return true; }
 
    //==============================================================================
    void initialise(const String& commandLine) override
    {
        m_mainWindow.reset(std::make_unique<MainWindow>(getApplicationName(), commandLine).release());
 
#if JUCE_MAC
        // Ignore SIGPIPE globally, to prevent occasional unexpected app
        // termination when Mema.Mo instances disconnect while sending by
        // writing to socket is ongoing
        signal(SIGPIPE, SIG_IGN);
#endif
 
        // a single instance of tooltip window is required and used by JUCE everywhere a tooltip is required.
        m_toolTipWindowInstance = std::make_unique<TooltipWindow>();
    }
 
    void shutdown() override
    {
        m_mainWindow.reset();
    }
 
    //==============================================================================
    void systemRequestedQuit() override
    {
        // This is called when the app is being asked to quit: you can ignore this
        // request and let the app carry on running, or call quit() to allow the app to close.
        quit();
    }
 
    void anotherInstanceStarted(const juce::String& commandLine) override
    {
        ignoreUnused(commandLine);
    }
 
    //==============================================================================
    /*
        This class implements the desktop window that contains an instance of
        our MainComponent class.
    */
    class MainWindow : public juce::DocumentWindow, juce::DarkModeSettingListener
    {
    public:
        MainWindow(const juce::String& name, const juce::String& commandLine) : juce::DocumentWindow(name,
            juce::Desktop::getInstance().getDefaultLookAndFeel()
            .findColour(juce::ResizableWindow::backgroundColourId),
            juce::DocumentWindow::allButtons)
        {
            ignoreUnused(commandLine);
 
            setUsingNativeTitleBar(true);
            auto mainComponent = std::make_unique<MainComponent>();
            mainComponent->onPaletteStyleChange = [=](int paletteStyle, bool followLocalStyle) {
                m_followLocalStyle = followLocalStyle;
                applyPaletteStyle(static_cast<JUCEAppBasics::CustomLookAndFeel::PaletteStyle>(paletteStyle));
            };
            mainComponent->onSetFullscreenWindow = [=](bool fullscreenWindow) { setFullscreenWindow(fullscreenWindow); };
            setContentOwned(mainComponent.release(), true);
 
#if JUCE_IOS || JUCE_ANDROID
            setFullScreen(true);
            juce::Desktop::getInstance().setScreenSaverEnabled(false);
#elif JUCE_LINUX
            juce::Desktop::getInstance().setKioskModeComponent(getTopLevelComponent(), false);
#else
            setResizable(true, true);
            centreWithSize(getWidth(), getHeight());
#endif
 
            setVisible(true);
 
            juce::Desktop::getInstance().addDarkModeSettingListener(this);
            darkModeSettingChanged(); // initially trigger correct colourscheme
 
            // use the settings menu item call infrastructure to activate dark mode per default
            if (auto mc = dynamic_cast<MainComponent*>(getContentComponent()))
                mc->applySettingsOption(MainComponent::MemaReSettingsOption::LookAndFeel_Dark);
 
            JUCEAppBasics::AppConfigurationBase::getInstance()->triggerWatcherUpdate();
        }
 
        void closeButtonPressed() override
        {
            juce::JUCEApplication::getInstance()->systemRequestedQuit();
        }
 
        void darkModeSettingChanged() override
        {
            if (!m_followLocalStyle)
                return;
 
            if (juce::Desktop::getInstance().isDarkModeActive())
            {
                // go dark
                applyPaletteStyle(JUCEAppBasics::CustomLookAndFeel::PS_Dark);
            }
            else
            {
                // go light
                applyPaletteStyle(JUCEAppBasics::CustomLookAndFeel::PS_Light);
            }
 
            lookAndFeelChanged();
        }
 
        void applyPaletteStyle(JUCEAppBasics::CustomLookAndFeel::PaletteStyle paletteStyle)
        {
            m_lookAndFeel = std::make_unique<JUCEAppBasics::CustomLookAndFeel>(paletteStyle);
            juce::Desktop::getInstance().setDefaultLookAndFeel(m_lookAndFeel.get());
        }
 
        void setFullscreenWindow(bool fullscreenWindow)
        {
#if JUCE_WINDOWS
            if (fullscreenWindow)
                juce::Desktop::getInstance().setKioskModeComponent(getTopLevelComponent(), false);
            else
                juce::Desktop::getInstance().setKioskModeComponent(nullptr, false);
#elif JUCE_MAC
            if (auto* topLevel = getTopLevelComponent())
            {
                if (auto* peer = topLevel->getPeer())
                {
                    peer->setFullScreen(fullscreenWindow);
                    return;
                }
            }
            jassertfalse;
#endif
        }
 
    private:
        std::unique_ptr<juce::LookAndFeel>  m_lookAndFeel;
        bool m_followLocalStyle = true;
 
        JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(MainWindow)
    };
 
private:
    std::unique_ptr<MainWindow>             m_mainWindow;
    std::unique_ptr<juce::TooltipWindow>    m_toolTipWindowInstance;
};
 
//==============================================================================
// This macro generates the main() routine that launches the app.
START_JUCE_APPLICATION(MainApplication)