// Loads and initializes application assets when the application is loaded.
DWriteOpenTypeEnumerationMain::DWriteOpenTypeEnumerationMain(const std::shared_ptr<DX::DeviceResources>& deviceResources) :
m_deviceResources(deviceResources)
{
// Register to be notified if the device is lost or recreated.
m_deviceResources->RegisterDeviceNotify(this);
m_sceneRenderer = std::unique_ptr<DWriteOpenTypeEnumerationRenderer>(new DWriteOpenTypeEnumerationRenderer(m_deviceResources));
// Create variables to store the font family and index in the collection
Microsoft::WRL::ComPtr<IDWriteFontFamily> tempFontFamily;
Microsoft::WRL::ComPtr<IDWriteFont> tempFont;
Microsoft::WRL::ComPtr<IDWriteFontFace> tempFontFace;
Microsoft::WRL::ComPtr<IDWriteFontCollection> fontCollection;
Microsoft::WRL::ComPtr<IDWriteTextAnalyzer> textAnalyzer;
UINT32 fontIndex = 0;
BOOL isPresent = false;
// Get a copy of the system font collection
m_deviceResources->GetDWriteFactory()->GetSystemFontCollection(&fontCollection);
WCHAR* fontFaceNames[] = {L"Arial", L"Times New Roman", L"Meiryo", L"Gabriola"};
Microsoft::WRL::ComPtr<IDWriteFontFace2>* fontFaces[4] = {&m_arial, &m_times, &m_meiryo, &m_gabriola};
for (int i = 0; i < ARRAYSIZE(fontFaceNames); i++)
{
fontCollection->FindFamilyName(fontFaceNames[i], &fontIndex, &isPresent);
if (isPresent)
{
DX::ThrowIfFailed(
fontCollection->GetFontFamily(fontIndex, &tempFontFamily)
);
DX::ThrowIfFailed(
tempFontFamily->GetFirstMatchingFont(
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
&tempFont
)
);
DX::ThrowIfFailed(
tempFont->CreateFontFace(&tempFontFace)
);
DX::ThrowIfFailed(
tempFontFace.As(fontFaces[i])
);
}
}
// Create the IDWriteTextAnalyzer that we'll need to get OpenType feature coverage from
m_deviceResources->GetDWriteFactory()->CreateTextAnalyzer(&textAnalyzer);
textAnalyzer.As(&m_textAnalyzer);
}
void TextFormatD2D::SetProperties(
const WCHAR* fontFamily, int size, bool bold, bool italic,
const FontCollection* fontCollection)
{
auto fontCollectionD2D = (FontCollectionD2D*)fontCollection;
Dispose();
WCHAR dwriteFamilyName[LF_FACESIZE];
DWRITE_FONT_WEIGHT dwriteFontWeight =
bold ? DWRITE_FONT_WEIGHT_BOLD : DWRITE_FONT_WEIGHT_REGULAR;
DWRITE_FONT_STYLE dwriteFontStyle =
italic ? DWRITE_FONT_STYLE_ITALIC : DWRITE_FONT_STYLE_NORMAL;
DWRITE_FONT_STRETCH dwriteFontStretch = DWRITE_FONT_STRETCH_NORMAL;
const float dwriteFontSize = size * (4.0f / 3.0f);
// |fontFamily| uses the GDI/GDI+ font naming convention so try to create DirectWrite font
// using the GDI family name and then create a text format using the DirectWrite family name
// obtained from it.
HRESULT hr = Util::GetDWritePropertiesFromGDIProperties(
CanvasD2D::c_DWFactory.Get(), fontFamily, bold, italic, dwriteFontWeight, dwriteFontStyle,
dwriteFontStretch, dwriteFamilyName, _countof(dwriteFamilyName));
if (SUCCEEDED(hr))
{
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
dwriteFamilyName,
nullptr,
dwriteFontWeight,
dwriteFontStyle,
dwriteFontStretch,
dwriteFontSize,
L"",
&m_TextFormat);
}
if (FAILED(hr))
{
IDWriteFontCollection* dwriteFontCollection = nullptr;
// If |fontFamily| is not in the system collection, use the font collection from
// |fontCollectionD2D| if possible.
if (!Util::IsFamilyInSystemFontCollection(CanvasD2D::c_DWFactory.Get(), fontFamily) &&
(fontCollectionD2D && fontCollectionD2D->InitializeCollection()))
{
IDWriteFont* dwriteFont = Util::FindDWriteFontInFontCollectionByGDIFamilyName(
fontCollectionD2D->m_Collection, fontFamily);
if (dwriteFont)
{
hr = Util::GetFamilyNameFromDWriteFont(
dwriteFont, dwriteFamilyName, _countof(dwriteFamilyName));
if (SUCCEEDED(hr))
{
fontFamily = dwriteFamilyName;
Util::GetPropertiesFromDWriteFont(
dwriteFont, bold, italic, &dwriteFontWeight, &dwriteFontStyle,
&dwriteFontStretch);
}
dwriteFont->Release();
}
dwriteFontCollection = fontCollectionD2D->m_Collection;
}
// Fallback in case above fails.
hr = CanvasD2D::c_DWFactory->CreateTextFormat(
fontFamily,
dwriteFontCollection,
dwriteFontWeight,
dwriteFontStyle,
dwriteFontStretch,
dwriteFontSize,
L"",
&m_TextFormat);
}
if (SUCCEEDED(hr))
{
SetHorizontalAlignment(GetHorizontalAlignment());
SetVerticalAlignment(GetVerticalAlignment());
// Get the family name to in case CreateTextFormat() fallbacked on some other family name.
hr = m_TextFormat->GetFontFamilyName(dwriteFamilyName, _countof(dwriteFamilyName));
if (FAILED(hr)) return;
Microsoft::WRL::ComPtr<IDWriteFontCollection> collection;
Microsoft::WRL::ComPtr<IDWriteFontFamily> fontFamily;
UINT32 familyNameIndex;
BOOL exists;
if (FAILED(m_TextFormat->GetFontCollection(collection.GetAddressOf())) ||
FAILED(collection->FindFamilyName(dwriteFamilyName, &familyNameIndex, &exists)) ||
FAILED(collection->GetFontFamily(familyNameIndex, fontFamily.GetAddressOf())))
{
return;
}
Microsoft::WRL::ComPtr<IDWriteFont> font;
hr = fontFamily->GetFirstMatchingFont(
m_TextFormat->GetFontWeight(),
m_TextFormat->GetFontStretch(),
m_TextFormat->GetFontStyle(),
font.GetAddressOf());
if (FAILED(hr)) return;
DWRITE_FONT_METRICS fmetrics;
font->GetMetrics(&fmetrics);
// GDI+ compatibility: GDI+ adds extra padding below the string when |m_AccurateText| is
// |false|. The bottom padding seems to be based on the font metrics so we can calculate it
// once and keep using it regardless of the actual string. In some cases, GDI+ also adds
// the line gap to the overall height so we will store it as well.
const float pixelsPerDesignUnit = dwriteFontSize / (float)fmetrics.designUnitsPerEm;
m_ExtraHeight =
(((float)fmetrics.designUnitsPerEm / 8.0f) - fmetrics.lineGap) * pixelsPerDesignUnit;
m_LineGap = fmetrics.lineGap * pixelsPerDesignUnit;
}
else
{
Dispose();
}
}
