Carla/source/modules/juce_gui_extra/misc/juce_PreferencesPanel.cpp

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

   This file is part of the JUCE 6 technical preview.
   Copyright (c) 2017 - ROLI Ltd.

   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
{

PreferencesPanel::PreferencesPanel()
    : buttonSize (70)
{
}

PreferencesPanel::~PreferencesPanel()
{
}

int PreferencesPanel::getButtonSize() const noexcept
{
    return buttonSize;
}

void PreferencesPanel::setButtonSize (int newSize)
{
    buttonSize = newSize;
    resized();
}

//==============================================================================
void PreferencesPanel::addSettingsPage (const String& title,
                                        const Drawable* icon,
                                        const Drawable* overIcon,
                                        const Drawable* downIcon)
{
    auto* button = new DrawableButton (title, DrawableButton::ImageAboveTextLabel);
    buttons.add (button);

    button->setImages (icon, overIcon, downIcon);
    button->setRadioGroupId (1);
    button->onClick = [this] { clickedPage(); };
    button->setClickingTogglesState (true);
    button->setWantsKeyboardFocus (false);
    addAndMakeVisible (button);

    resized();

    if (currentPage == nullptr)
        setCurrentPage (title);
}

void PreferencesPanel::addSettingsPage (const String& title, const void* imageData, int imageDataSize)
{
    DrawableImage icon, iconOver, iconDown;
    icon.setImage (ImageCache::getFromMemory (imageData, imageDataSize));

    iconOver.setImage (ImageCache::getFromMemory (imageData, imageDataSize));
    iconOver.setOverlayColour (Colours::black.withAlpha (0.12f));

    iconDown.setImage (ImageCache::getFromMemory (imageData, imageDataSize));
    iconDown.setOverlayColour (Colours::black.withAlpha (0.25f));

    addSettingsPage (title, &icon, &iconOver, &iconDown);
}

//==============================================================================
void PreferencesPanel::showInDialogBox (const String& dialogTitle, int dialogWidth, int dialogHeight, Colour backgroundColour)
{
    setSize (dialogWidth, dialogHeight);

    DialogWindow::LaunchOptions o;
    o.content.setNonOwned (this);
    o.dialogTitle                   = dialogTitle;
    o.dialogBackgroundColour        = backgroundColour;
    o.escapeKeyTriggersCloseButton  = false;
    o.useNativeTitleBar             = false;
    o.resizable                     = false;

    o.launchAsync();
}

//==============================================================================
void PreferencesPanel::resized()
{
    for (int i = 0; i < buttons.size(); ++i)
        buttons.getUnchecked(i)->setBounds (i * buttonSize, 0, buttonSize, buttonSize);

    if (currentPage != nullptr)
        currentPage->setBounds (getLocalBounds().withTop (buttonSize + 5));
}

void PreferencesPanel::paint (Graphics& g)
{
    g.setColour (Colours::grey);
    g.fillRect (0, buttonSize + 2, getWidth(), 1);
}

void PreferencesPanel::setCurrentPage (const String& pageName)
{
    if (currentPageName != pageName)
    {
        currentPageName = pageName;

        currentPage.reset();
        currentPage.reset (createComponentForPage (pageName));

        if (currentPage != nullptr)
        {
            addAndMakeVisible (currentPage.get());
            currentPage->toBack();
            resized();
        }

        for (auto* b : buttons)
        {
            if (b->getName() == pageName)
            {
                b->setToggleState (true, dontSendNotification);
                break;
            }
        }
    }
}

void PreferencesPanel::clickedPage()
{
    for (auto* b : buttons)
    {
        if (b->getToggleState())
        {
            setCurrentPage (b->getName());
            break;
        }
    }
}

} // namespace juce