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//
// Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// CoreWindowNativeWindow.cpp: NativeWindow for managing ICoreWindow native window types.
#include <algorithm>
#include "common/winrt/CoreWindowNativeWindow.h"
using namespace ABI::Windows::Foundation::Collections;
namespace rx
{
typedef ITypedEventHandler<ABI::Windows::UI::Core::CoreWindow *, ABI::Windows::UI::Core::WindowSizeChangedEventArgs *> SizeChangedHandler;
CoreWindowNativeWindow::~CoreWindowNativeWindow()
{
unregisterForSizeChangeEvents();
}
bool CoreWindowNativeWindow::initialize(EGLNativeWindowType window, EGLNativeDisplayType display, IPropertySet *propertySet)
{
ComPtr<IPropertySet> props = propertySet;
ComPtr<IInspectable> win = window;
ComPtr<IInspectable> displayInformation = display;
SIZE swapChainSize = {};
bool swapChainSizeSpecified = false;
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 (SUCCEEDED(result))
{
// 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, &swapChainSizeSpecified);
}
}
if (SUCCEEDED(result))
{
result = win.As(&mCoreWindow);
}
if (SUCCEEDED(result))
{
result = displayInformation.As(&mDisplayInformation);
}
if (SUCCEEDED(result))
{
#if WINAPI_FAMILY==WINAPI_FAMILY_PHONE_APP
ComPtr<ABI::Windows::Graphics::Display::IDisplayInformation2> displayInformation2;
result = mDisplayInformation.As(&displayInformation2);
ASSERT(SUCCEEDED(result));
result = displayInformation2->get_RawPixelsPerViewPixel(&mScaleFactor);
ASSERT(SUCCEEDED(result));
#else
ABI::Windows::Graphics::Display::ResolutionScale resolutionScale;
result = mDisplayInformation->get_ResolutionScale(&resolutionScale);
ASSERT(SUCCEEDED(result));
mScaleFactor = DOUBLE(resolutionScale) / 100.0;
#endif
}
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 (swapChainSizeSpecified)
{
mClientRect = { 0, 0, swapChainSize.cx, swapChainSize.cy };
mSupportsSwapChainResize = false;
}
else
{
ABI::Windows::Foundation::Rect rect;
HRESULT result = mCoreWindow->get_Bounds(&rect);
if (SUCCEEDED(result))
{
LONG width = std::floor(rect.Width * mScaleFactor + 0.5);
LONG height = std::floor(rect.Height * mScaleFactor + 0.5);
mClientRect = { 0, 0, width, height };
}
}
}
if (SUCCEEDED(result))
{
mNewClientRect = mClientRect;
mClientRectChanged = false;
return registerForSizeChangeEvents();
}
return false;
}
bool CoreWindowNativeWindow::registerForSizeChangeEvents()
{
HRESULT result = mCoreWindow->add_SizeChanged(Callback<SizeChangedHandler>(this, &CoreWindowNativeWindow::onSizeChanged).Get(),
&mSizeChangedEventToken);
if (SUCCEEDED(result))
{
return true;
}
return false;
}
void CoreWindowNativeWindow::unregisterForSizeChangeEvents()
{
if (mCoreWindow)
{
(void)mCoreWindow->remove_SizeChanged(mSizeChangedEventToken);
}
mSizeChangedEventToken.value = 0;
}
HRESULT CoreWindowNativeWindow::createSwapChain(ID3D11Device *device, DXGIFactory *factory, DXGI_FORMAT format, unsigned int width, unsigned int height, DXGISwapChain **swapChain)
{
if (device == NULL || factory == NULL || swapChain == NULL || width == 0 || height == 0)
{
return E_INVALIDARG;
}
DXGI_SWAP_CHAIN_DESC1 swapChainDesc = { 0 };
swapChainDesc.Width = width;
swapChainDesc.Height = height;
swapChainDesc.Format = format;
swapChainDesc.Stereo = FALSE;
swapChainDesc.SampleDesc.Count = 1;
swapChainDesc.SampleDesc.Quality = 0;
swapChainDesc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT | DXGI_USAGE_BACK_BUFFER;
swapChainDesc.BufferCount = 2;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
swapChainDesc.Scaling = DXGI_SCALING_STRETCH;
*swapChain = nullptr;
ComPtr<IDXGISwapChain1> newSwapChain;
HRESULT result = factory->CreateSwapChainForCoreWindow(device, mCoreWindow.Get(), &swapChainDesc, nullptr, newSwapChain.ReleaseAndGetAddressOf());
if (SUCCEEDED(result))
{
#if (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP) // This block is disabled for Qt applications, as the resize events are expected
// Test if swapchain supports resize. On Windows Phone devices, this will return DXGI_ERROR_UNSUPPORTED. On
// other devices DXGI_ERROR_INVALID_CALL should be returned because the combination of flags passed
// (DXGI_SWAP_CHAIN_FLAG_NONPREROTATED | DXGI_SWAP_CHAIN_FLAG_GDI_COMPATIBLE) are invalid flag combinations.
if (newSwapChain->ResizeBuffers(swapChainDesc.BufferCount, swapChainDesc.Width, swapChainDesc.Height, swapChainDesc.Format, DXGI_SWAP_CHAIN_FLAG_NONPREROTATED | DXGI_SWAP_CHAIN_FLAG_GDI_COMPATIBLE) == DXGI_ERROR_UNSUPPORTED)
{
mSupportsSwapChainResize = false;
}
#endif // (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
result = newSwapChain.CopyTo(swapChain);
}
if (SUCCEEDED(result))
{
// If automatic swapchain resize behaviors have been disabled, then
// unregister for the resize change events.
if (mSupportsSwapChainResize == false)
{
unregisterForSizeChangeEvents();
}
}
return result;
}
// Basically, this shouldn't be used on Phone
HRESULT CoreWindowNativeWindow::onSizeChanged(ABI::Windows::UI::Core::ICoreWindow *, ABI::Windows::UI::Core::IWindowSizeChangedEventArgs *e)
{
ABI::Windows::Foundation::Size size;
if (SUCCEEDED(e->get_Size(&size)))
{
SIZE windowSizeInPixels = {
std::floor(size.Width * mScaleFactor + 0.5),
std::floor(size.Height * mScaleFactor + 0.5)
};
setNewClientSize(windowSizeInPixels);
}
return S_OK;
}
}
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