mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-10 23:44:24 +00:00
69 lines
2.4 KiB
C++
69 lines
2.4 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
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
|
|
{
|
|
|
|
/**
|
|
Calls a function every time the native scale factor of a component's peer changes.
|
|
|
|
This is used in the VST and VST3 wrappers to ensure that the editor's scale is kept in sync with
|
|
the scale of its containing component.
|
|
|
|
@tags{GUI}
|
|
*/
|
|
class NativeScaleFactorNotifier : private ComponentMovementWatcher,
|
|
private ComponentPeer::ScaleFactorListener
|
|
{
|
|
public:
|
|
/** Constructs an instance.
|
|
|
|
While the instance is alive, it will listen for changes to the scale factor of the
|
|
comp's peer, and will call onScaleChanged whenever this scale factor changes.
|
|
|
|
@param comp The component to observe
|
|
@param onScaleChanged A function that will be called when the backing scale factor changes
|
|
*/
|
|
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
|