juce_NativeScaleFactorNotifier.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   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 7 End-User License
   Agreement and JUCE Privacy Policy.
 
   End User License Agreement: www.juce.com/juce-7-licence
   Privacy Policy: www.juce.com/juce-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.
 
  ==============================================================================
*/
 
namespace juce
{

class NativeScaleFactorNotifier : private ComponentMovementWatcher,
                                  private ComponentPeer::ScaleFactorListener
{
public:
    NativeScaleFactorNotifier (Component* comp, std::function<void (float)> onScaleChanged);
    ~NativeScaleFactorNotifier() override;
 
private:
    void nativeScaleFactorChanged (double newScaleFactor) override;
    void componentPeerChanged() override;
 
    using ComponentMovementWatcher::componentVisibilityChanged;
    void componentVisibilityChanged() override {}
 
    using ComponentMovementWatcher::componentMovedOrResized;
    void componentMovedOrResized (bool, bool) override {}
 
    ComponentPeer* peer = nullptr;
    std::function<void (float)> scaleChanged;
 
    JUCE_DECLARE_NON_COPYABLE (NativeScaleFactorNotifier)
    JUCE_DECLARE_NON_MOVEABLE (NativeScaleFactorNotifier)
};
 
} // namespace juce