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

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

   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.

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

namespace juce
{

BubbleMessageComponent::BubbleMessageComponent (int fadeOutLengthMs)
    : fadeOutLength (fadeOutLengthMs), mouseClickCounter (0),
      expiryTime (0), deleteAfterUse (false)
{
}

BubbleMessageComponent::~BubbleMessageComponent()
{
}

void BubbleMessageComponent::showAt (const Rectangle<int>& pos,
                                     const AttributedString& text,
                                     const int numMillisecondsBeforeRemoving,
                                     const bool removeWhenMouseClicked,
                                     const bool deleteSelfAfterUse)
{
    createLayout (text);
    setPosition (pos);
    init (numMillisecondsBeforeRemoving, removeWhenMouseClicked, deleteSelfAfterUse);
}

void BubbleMessageComponent::showAt (Component* const component,
                                     const AttributedString& text,
                                     const int numMillisecondsBeforeRemoving,
                                     const bool removeWhenMouseClicked,
                                     const bool deleteSelfAfterUse)
{
    createLayout (text);
    setPosition (component);
    init (numMillisecondsBeforeRemoving, removeWhenMouseClicked, deleteSelfAfterUse);
}

void BubbleMessageComponent::createLayout (const AttributedString& text)
{
    textLayout.createLayoutWithBalancedLineLengths (text, 256);
}

void BubbleMessageComponent::init (const int numMillisecondsBeforeRemoving,
                                   const bool removeWhenMouseClicked,
                                   const bool deleteSelfAfterUse)
{
    setAlpha (1.0f);
    setVisible (true);
    deleteAfterUse = deleteSelfAfterUse;

    expiryTime = numMillisecondsBeforeRemoving > 0
                    ? (Time::getMillisecondCounter() + (uint32) numMillisecondsBeforeRemoving) : 0;

    mouseClickCounter = Desktop::getInstance().getMouseButtonClickCounter();

    if (! (removeWhenMouseClicked && isShowing()))
        mouseClickCounter += 0xfffff;

    startTimer (77);
    repaint();
}

const float bubblePaddingX = 20.0f;
const float bubblePaddingY = 14.0f;

void BubbleMessageComponent::getContentSize (int& w, int& h)
{
    w = (int) (bubblePaddingX + textLayout.getWidth());
    h = (int) (bubblePaddingY + textLayout.getHeight());
}

void BubbleMessageComponent::paintContent (Graphics& g, int w, int h)
{
    g.setColour (findColour (TooltipWindow::textColourId));

    textLayout.draw (g, Rectangle<float> (bubblePaddingX / 2.0f, bubblePaddingY / 2.0f,
                                          w - bubblePaddingX, h - bubblePaddingY));
}

void BubbleMessageComponent::timerCallback()
{
    if (Desktop::getInstance().getMouseButtonClickCounter() > mouseClickCounter)
        hide (false);
    else if (expiryTime != 0 && Time::getMillisecondCounter() > expiryTime)
        hide (true);
}

void BubbleMessageComponent::hide (const bool fadeOut)
{
    stopTimer();

    if (fadeOut)
        Desktop::getInstance().getAnimator().fadeOut (this, fadeOutLength);
    else
        setVisible (false);

    if (deleteAfterUse)
        delete this;
}

} // namespace juce