68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
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//************************************************************************************************
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//
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// PreSonus Plug-In Extensions
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// Written and placed in the PUBLIC DOMAIN by PreSonus Software Ltd.
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//
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// Filename : ipslviewscaling.h
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// Created by : PreSonus Software Ltd., 03/2015
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// Description : Plug-in View DPI Scaling Interface
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//
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//************************************************************************************************
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/*
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DISCLAIMER:
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The PreSonus Plug-In Extensions are host-specific extensions of existing proprietary technologies,
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provided to the community on an AS IS basis. They are not part of any official 3rd party SDK and
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PreSonus is not affiliated with the owner of the underlying technology in any way.
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*/
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//************************************************************************************************
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#ifndef _ipslviewscaling_h
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#define _ipslviewscaling_h
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#include "pluginterfaces/base/funknown.h"
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#include "pluginterfaces/base/falignpush.h"
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namespace Presonus {
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//************************************************************************************************
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// IPlugInViewScaling
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/** Support for plug-in view content scaling, to be implemented by the VST3 IPlugView class.
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On Windows, if a process is "DPI-aware" and the system DPI setting is different from the default
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value of 96 DPI, the application is responsible to scale the contents of its windows accordingly,
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including child windows provided by 3rd party plug-ins.
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This interface is used by the host to inform the plug-in about the current scaling factor.
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The scaling factor is used to convert user space coordinates aka DIPs (device-independent pixels)
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to physical pixels on screen.
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The plug-in has to be prepared to deal with the following scaling factors:
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96 DPI = 100% scaling (factor = 1.0)
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120 DPI = 125% scaling (factor = 1.25)
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144 DPI = 150% scaling (factor = 1.5)
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192 DPI = 200% scaling (factor = 2.0)
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On Windows 8.1 or later DPI settings are per monitor. The scaling factor for a window can change
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when it is moved between screens.
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*/
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//************************************************************************************************
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struct IPlugInViewScaling: Steinberg::FUnknown
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{
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/** Inform the view about the current content scaling factor. The scaling factor can change
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if the window is moved between screens.
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*/
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virtual Steinberg::tresult PLUGIN_API setContentScaleFactor (float factor) = 0;
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static const Steinberg::FUID iid;
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};
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DECLARE_CLASS_IID (IPlugInViewScaling, 0x65ed9690, 0x8ac44525, 0x8aadef7a, 0x72ea703f)
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} // namespace Presonus
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#include "pluginterfaces/base/falignpop.h"
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#endif // _ipslviewscaling_h
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