bool SwapChainPanelNativeWindow::initialize(EGLNativeWindowType window, IPropertySet *propertySet)
{
ComPtr<IPropertySet> props = propertySet;
ComPtr<IInspectable> win = window;
SIZE swapChainSize = {};
HRESULT result = S_OK;
// IPropertySet is an optional parameter and can be null.
// If one is specified, cache as an IMap and read the properties
// used for initial host initialization.
if (propertySet)
{
result = props.As(&mPropertyMap);
if (FAILED(result))
{
return false;
}
// The EGLRenderSurfaceSizeProperty is optional and may be missing. The IPropertySet
// was prevalidated to contain the EGLNativeWindowType before being passed to
// this host.
result = GetOptionalSizePropertyValue(mPropertyMap, EGLRenderSurfaceSizeProperty, &swapChainSize, &mSwapChainSizeSpecified);
if (FAILED(result))
{
return false;
}
// The EGLRenderResolutionScaleProperty is optional and may be missing. The IPropertySet
// was prevalidated to contain the EGLNativeWindowType before being passed to
// this host.
result = GetOptionalSinglePropertyValue(mPropertyMap, EGLRenderResolutionScaleProperty, &mSwapChainScale, &mSwapChainScaleSpecified);
if (FAILED(result))
{
return false;
}
if (!mSwapChainScaleSpecified)
{
// Default value for the scale is 1.0f
mSwapChainScale = 1.0f;
}
// A EGLRenderSurfaceSizeProperty and a EGLRenderResolutionScaleProperty can't both be specified
if (mSwapChainScaleSpecified && mSwapChainSizeSpecified)
{
ERR() << "It is invalid to specify both an EGLRenderSurfaceSizeProperty and a "
"EGLRenderResolutionScaleProperty.";
return false;
}
}
if (SUCCEEDED(result))
{
result = win.As(&mSwapChainPanel);
}
ComPtr<IDependencyObject> swapChainPanelDependencyObject;
if (SUCCEEDED(result))
{
result = mSwapChainPanel.As(&swapChainPanelDependencyObject);
}
if (SUCCEEDED(result))
{
result = swapChainPanelDependencyObject->get_Dispatcher(
mSwapChainPanelDispatcher.GetAddressOf());
}
if (SUCCEEDED(result))
{
// If a swapchain size is specfied, then the automatic resize
// behaviors implemented by the host should be disabled. The swapchain
// will be still be scaled when being rendered to fit the bounds
// of the host.
// Scaling of the swapchain output needs to be handled by the
// host for swapchain panels even though the scaling mode setting
// DXGI_SCALING_STRETCH is configured on the swapchain.
if (mSwapChainSizeSpecified)
{
mClientRect = { 0, 0, swapChainSize.cx, swapChainSize.cy };
}
else
{
Size swapChainPanelSize;
result = GetSwapChainPanelSize(mSwapChainPanel, mSwapChainPanelDispatcher,
&swapChainPanelSize);
if (SUCCEEDED(result))
{
// Update the client rect to account for any swapchain scale factor
mClientRect = clientRect(swapChainPanelSize);
}
}
}
if (SUCCEEDED(result))
{
mNewClientRect = mClientRect;
mClientRectChanged = false;
return registerForSizeChangeEvents();
}
return false;
}
bool CoreWindowNativeWindow::initialize(EGLNativeWindowType window, IPropertySet *propertySet)
{
ComPtr<IPropertySet> props = propertySet;
ComPtr<IInspectable> win = window;
SIZE swapChainSize = {};
HRESULT result = S_OK;
// IPropertySet is an optional parameter and can be null.
// If one is specified, cache as an IMap and read the properties
// used for initial host initialization.
if (propertySet)
{
result = props.As(&mPropertyMap);
if (FAILED(result))
{
return false;
}
// The EGLRenderSurfaceSizeProperty is optional and may be missing. The IPropertySet
// was prevalidated to contain the EGLNativeWindowType before being passed to
// this host.
result = GetOptionalSizePropertyValue(mPropertyMap, EGLRenderSurfaceSizeProperty, &swapChainSize, &mSwapChainSizeSpecified);
if (FAILED(result))
{
return false;
}
// The EGLRenderResolutionScaleProperty is optional and may be missing. The IPropertySet
// was prevalidated to contain the EGLNativeWindowType before being passed to
// this host.
result = GetOptionalSinglePropertyValue(mPropertyMap, EGLRenderResolutionScaleProperty, &mSwapChainScale, &mSwapChainScaleSpecified);
if (FAILED(result))
{
return false;
}
if (!mSwapChainScaleSpecified)
{
// Default value for the scale is 1.0f
mSwapChainScale = 1.0f;
}
// A EGLRenderSurfaceSizeProperty and a EGLRenderResolutionScaleProperty can't both be specified
if (mSwapChainScaleSpecified && mSwapChainSizeSpecified)
{
ERR("It is invalid to specify both an EGLRenderSurfaceSizeProperty and a EGLRenderResolutionScaleProperty.");
return false;
}
}
if (SUCCEEDED(result))
{
result = win.As(&mCoreWindow);
}
if (SUCCEEDED(result))
{
// If a swapchain size is specfied, then the automatic resize
// behaviors implemented by the host should be disabled. The swapchain
// will be still be scaled when being rendered to fit the bounds
// of the host.
// Scaling of the swapchain output occurs automatically because if
// the scaling mode setting DXGI_SCALING_STRETCH on the swapchain.
if (mSwapChainSizeSpecified)
{
mClientRect = { 0, 0, swapChainSize.cx, swapChainSize.cy };
}
else
{
Size coreWindowSize;
result = GetCoreWindowSizeInPixels(mCoreWindow, &coreWindowSize);
if (SUCCEEDED(result))
{
mClientRect = clientRect(coreWindowSize);
}
}
}
if (SUCCEEDED(result))
{
mNewClientRect = mClientRect;
mClientRectChanged = false;
return registerForSizeChangeEvents();
}
return false;
}
