juce_win32_UIATransformProvider.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 UIATransformProvider  : public UIAProviderBase,
                              public ComBaseClassHelper<ComTypes::ITransformProvider>
{
public:
    using UIAProviderBase::UIAProviderBase;
 
    //==============================================================================
    JUCE_COMRESULT Move (double x, double y) override
    {
        if (! isElementValid())
            return (HRESULT) UIA_E_ELEMENTNOTAVAILABLE;
 
        if (auto* peer = getPeer())
        {
            RECT rect;
            GetWindowRect ((HWND) peer->getNativeHandle(), &rect);
 
            rect.left = roundToInt (x);
            rect.top  = roundToInt (y);
 
            auto bounds = Rectangle<int>::leftTopRightBottom (rect.left, rect.top, rect.right, rect.bottom);
 
            peer->setBounds (Desktop::getInstance().getDisplays().physicalToLogical (bounds),
                             peer->isFullScreen());
        }
 
        return S_OK;
    }
 
    JUCE_COMRESULT Resize (double width, double height) override
    {
        if (! isElementValid())
            return (HRESULT) UIA_E_ELEMENTNOTAVAILABLE;
 
        if (auto* peer = getPeer())
        {
            auto scale = peer->getPlatformScaleFactor();
 
            peer->getComponent().setSize (roundToInt (width  / scale),
                                          roundToInt (height / scale));
        }
 
        return S_OK;
    }
 
    JUCE_COMRESULT Rotate (double) override
    {
        if (! isElementValid())
            return (HRESULT) UIA_E_ELEMENTNOTAVAILABLE;
 
        return (HRESULT) UIA_E_NOTSUPPORTED;
    }
 
    JUCE_COMRESULT get_CanMove (BOOL* pRetVal) override
    {
        return withCheckedComArgs (pRetVal, *this, [&]
        {
            *pRetVal = true;
            return S_OK;
        });
    }
 
    JUCE_COMRESULT get_CanResize (BOOL* pRetVal) override
    {
        return withCheckedComArgs (pRetVal, *this, [&]
        {
            if (auto* peer = getPeer())
                *pRetVal = ((peer->getStyleFlags() & ComponentPeer::windowIsResizable) != 0);
 
            return S_OK;
        });
    }
 
    JUCE_COMRESULT get_CanRotate (BOOL* pRetVal) override
    {
        return withCheckedComArgs (pRetVal, *this, [&]
        {
            *pRetVal = false;
            return S_OK;
        });
    }
 
private:
    ComponentPeer* getPeer() const
    {
        return getHandler().getComponent().getPeer();
    }
 
    //==============================================================================
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (UIATransformProvider)
};
 
} // namespace juce