Carla/source/modules/juce_gui_basics/keyboard/juce_CaretComponent.cpp

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

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

   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 5 End-User License
   Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
   27th April 2017).

   End User License Agreement: www.juce.com/juce-5-licence
   Privacy Policy: www.juce.com/juce-5-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.

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

CaretComponent::CaretComponent (Component* const keyFocusOwner)
    : owner (keyFocusOwner)
{
    setPaintingIsUnclipped (true);
    setInterceptsMouseClicks (false, false);
}

CaretComponent::~CaretComponent()
{
}

void CaretComponent::paint (Graphics& g)
{
    g.setColour (findColour (caretColourId, true));
    g.fillRect (getLocalBounds());
}

void CaretComponent::timerCallback()
{
    setVisible (shouldBeShown() && ! isVisible());
}

void CaretComponent::setCaretPosition (const Rectangle<int>& characterArea)
{
    startTimer (380);
    setVisible (shouldBeShown());
    setBounds (characterArea.withWidth (2));
}

bool CaretComponent::shouldBeShown() const
{
    return owner == nullptr || (owner->hasKeyboardFocus (false)
                                 && ! owner->isCurrentlyBlockedByAnotherModalComponent());
}