// Drawing tile content into tile surfaces using D2D batching
HRESULT Application::DrawDCompTileSurfaces()
{
HRESULT hr = S_OK;
// Defining tile colors
D2D1_COLOR_F dcompTileSurfaceBackgroundColors [] =
{
D2D1::ColorF(D2D1::ColorF::LightBlue),
D2D1::ColorF(D2D1::ColorF::BlueViolet),
D2D1::ColorF(D2D1::ColorF::Blue),
D2D1::ColorF(D2D1::ColorF::Cyan)
};
D2D1_COLOR_F dcompTileSurfaceForegroundColors [] =
{
D2D1::ColorF(D2D1::ColorF::Black),
D2D1::ColorF(D2D1::ColorF::Black),
D2D1::ColorF(D2D1::ColorF::Black),
D2D1::ColorF(D2D1::ColorF::Black),
};
// Defining tile content
const wchar_t *dcompTileSurfaceTexts [] =
{
L"1",
L"2",
L"3",
L"4"
};
UINT dcompTileSurfaceWidth = 2 * _hWndClientWidth / 8;
UINT dcompTileSurfaceHeight = 2 * _hWndClientHeight / 8;
// Drawing content for all tile surfaces
for (int i = 0; SUCCEEDED(hr) && i < 4; ++i)
{
Microsoft::WRL::ComPtr<ID2D1DeviceContext> d2dDeviceContext;
POINT updateOffset = { 0 };
// Begin draw is using a D2D device context for D2D batching
hr = _dcompTileSurfaces[i]->BeginDraw(nullptr, __uuidof(ID2D1DeviceContext) , reinterpret_cast<void **>(d2dDeviceContext.GetAddressOf()), &updateOffset);
ShowMessageBoxIfFailed(hr, L"pDCompSurface->BeginDraw");
if (SUCCEEDED(hr))
{
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> d2dBackgroundBrush;
if (SUCCEEDED(hr))
{
hr = d2dDeviceContext->CreateSolidColorBrush(dcompTileSurfaceBackgroundColors[i], &d2dBackgroundBrush);
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->CreateSolidColorBrush");
}
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> d2dForegroundBrush;
if (SUCCEEDED(hr))
{
hr = d2dDeviceContext->CreateSolidColorBrush(dcompTileSurfaceForegroundColors[i], &d2dForegroundBrush);
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->CreateSolidColorBrush");
}
Microsoft::WRL::ComPtr<IDWriteTextFormat> dwriteTextFormat;
if (SUCCEEDED(hr))
{
hr = _dwriteFactory->CreateTextFormat(L"Verdana", nullptr, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL, 72.0f, L"en-us", &dwriteTextFormat);
ShowMessageBoxIfFailed(hr, L"dwriteFactory->CreateTextFormat");
}
if (SUCCEEDED(hr))
{
hr = dwriteTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER);
ShowMessageBoxIfFailed(hr, L"dwriteTextFormat->SetTextAlignment");
}
if (SUCCEEDED(hr))
{
hr = dwriteTextFormat->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER);
ShowMessageBoxIfFailed(hr, L"dwriteTextFormat->SetParagraphAlignment");
}
if (SUCCEEDED(hr))
{
D2D1_RECT_F dcompTileSurfaceRect = D2D1::RectF(
updateOffset.x + 0.0f * dcompTileSurfaceWidth,
updateOffset.y + 0.0f * dcompTileSurfaceHeight,
updateOffset.x + 1.0f * dcompTileSurfaceWidth,
updateOffset.y + 1.0f * dcompTileSurfaceHeight
);
d2dDeviceContext->FillRectangle(
dcompTileSurfaceRect,
d2dBackgroundBrush.Get());
d2dDeviceContext->DrawText(
dcompTileSurfaceTexts[i],
wcslen(dcompTileSurfaceTexts[i]),
dwriteTextFormat.Get(),
&dcompTileSurfaceRect,
d2dForegroundBrush.Get());
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->EndDraw");
}
}
if (SUCCEEDED(hr))
{
hr = _dcompTileSurfaces[i]->EndDraw();
ShowMessageBoxIfFailed(hr, L"pDCompSurface->EndDraw");
}
}
return hr;
}
// Defining text properties and drawing text into the DComp text surface
HRESULT Application::DrawDCompTextSurface()
{
HRESULT hr = S_OK;
UINT dcompTextSurfaceWidth = 7 * _hWndClientWidth / 8;
UINT dcompTextSurfaceHeight = 2 * _hWndClientHeight / 8;
if (SUCCEEDED(hr))
{
Microsoft::WRL::ComPtr<ID2D1DeviceContext> d2dDeviceContext;
POINT updateOffset = { 0 };
hr = _dcompTextSurface->BeginDraw(nullptr, __uuidof(ID2D1DeviceContext) , reinterpret_cast<void **>(d2dDeviceContext.GetAddressOf()), &updateOffset);
ShowMessageBoxIfFailed(hr, L"_dcompTextSurface->BeginDraw");
if (SUCCEEDED(hr))
{
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> d2dBackgroundBrush;
if (SUCCEEDED(hr))
{
hr = d2dDeviceContext->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::White), &d2dBackgroundBrush);
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->CreateSolidColorBrush");
}
Microsoft::WRL::ComPtr<ID2D1SolidColorBrush> d2dForegroundBrush;
if (SUCCEEDED(hr))
{
hr = d2dDeviceContext->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::Black), &d2dForegroundBrush);
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->CreateSolidColorBrush");
}
Microsoft::WRL::ComPtr<IDWriteTextFormat> dwriteTextFormat;
if (SUCCEEDED(hr))
{
hr = _dwriteFactory->CreateTextFormat(L"Verdana", nullptr, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL, 12.0f, L"en-us", &dwriteTextFormat);
ShowMessageBoxIfFailed(hr, L"dwriteFactory->CreateTextFormat");
}
if (SUCCEEDED(hr))
{
hr = dwriteTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_JUSTIFIED);
ShowMessageBoxIfFailed(hr, L"dwriteTextFormat->SetTextAlignment");
}
if (SUCCEEDED(hr))
{
hr = dwriteTextFormat->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_NEAR);
ShowMessageBoxIfFailed(hr, L"dwriteTextFormat->SetParagraphAlignment");
}
if (SUCCEEDED(hr))
{
const wchar_t dcompTileSurfaceText [] = L"This sample demonstrates how to use DirectComposition to apply backface visibility and utilize performance optmization feature known as D2D Batching. Tiles 2 & 3 show backface visible while 1 & 4 show the backface hidden. \n\n"
L"Step 1. Tap or click any tile below \n"
L"Step 2. Reset by selecting background \n";
D2D1_RECT_F dcompTextSurfaceRect = D2D1::RectF(
updateOffset.x + 0.0f * dcompTextSurfaceWidth,
updateOffset.y + 0.0f * dcompTextSurfaceHeight,
updateOffset.x + 1.0f * dcompTextSurfaceWidth,
updateOffset.y + 1.0f * dcompTextSurfaceHeight
);
d2dDeviceContext->FillRectangle(
dcompTextSurfaceRect,
d2dBackgroundBrush.Get());
d2dDeviceContext->DrawText(
dcompTileSurfaceText,
wcslen(dcompTileSurfaceText),
dwriteTextFormat.Get(),
&dcompTextSurfaceRect,
d2dForegroundBrush.Get());
ShowMessageBoxIfFailed(hr, L"d2dDeviceContext->EndDraw");
}
}
if (SUCCEEDED(hr))
{
hr = _dcompTextSurface->EndDraw();
ShowMessageBoxIfFailed(hr, L"_dcompTextSurface->EndDraw");
}
}
return hr;
}
