// This method takes an attributed string and outputs a GlyphLayout data
// structure that contains the glyph number and location of each inidividual glyph
void getGlyphLayout (const AttributedString& text, GlyphLayout& glyphLayout)
{
// For now we are creating the DirectWrite Factory, System Font Collection,
// D2D Factory and GDI Render target every time we layout text.
// This is inefficient and we may be loading and unloading libraries each layout.
// These four things should be created once at application startup and be destroyed
// when the application exits. I'm not sure where the best place to do this so
// for now I will just use the inefficient method.
IDWriteFactory* dwFactory = nullptr;
HRESULT hr = DWriteCreateFactory (DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(&dwFactory));
IDWriteFontCollection* dwFontCollection = nullptr;
hr = dwFactory->GetSystemFontCollection (&dwFontCollection);
// To add color to text, we need to create a D2D render target
// Since we are not actually rendering to a D2D context we create a temporary GDI render target
ID2D1Factory *d2dFactory = nullptr;
hr = D2D1CreateFactory (D2D1_FACTORY_TYPE_SINGLE_THREADED, &d2dFactory);
D2D1_RENDER_TARGET_PROPERTIES d2dRTProp = D2D1::RenderTargetProperties(
D2D1_RENDER_TARGET_TYPE_SOFTWARE,
D2D1::PixelFormat(
DXGI_FORMAT_B8G8R8A8_UNORM,
D2D1_ALPHA_MODE_IGNORE),
0,
0,
D2D1_RENDER_TARGET_USAGE_GDI_COMPATIBLE,
D2D1_FEATURE_LEVEL_DEFAULT
);
ID2D1DCRenderTarget* d2dDCRT = nullptr;
hr = d2dFactory->CreateDCRenderTarget (&d2dRTProp, &d2dDCRT);
// Initially we set the paragraph up with a default font and then apply the attributed string ranges later
Font defaultFont;
const float defaultFontHeightToEmSizeFactor = getFontHeightToEmSizeFactor (defaultFont, *dwFontCollection);
// We should probably be detecting the locale instead of hard coding it to en-us
String localeName("en-us");
// We multiply the font height by the size factor so we layout text at the correct size
IDWriteTextFormat* dwTextFormat = nullptr;
hr = dwFactory->CreateTextFormat (
defaultFont.getTypefaceName().toWideCharPointer(),
dwFontCollection,
DWRITE_FONT_WEIGHT_REGULAR,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
defaultFont.getHeight() * defaultFontHeightToEmSizeFactor,
localeName.toWideCharPointer(),
&dwTextFormat
);
// Paragraph Attributes
// Set Paragraph Alignment
if (text.getTextAlignment() == AttributedString::left)
dwTextFormat->SetTextAlignment (DWRITE_TEXT_ALIGNMENT_LEADING);
if (text.getTextAlignment() == AttributedString::right)
dwTextFormat->SetTextAlignment (DWRITE_TEXT_ALIGNMENT_TRAILING);
if (text.getTextAlignment() == AttributedString::center)
dwTextFormat->SetTextAlignment (DWRITE_TEXT_ALIGNMENT_CENTER);
// DirectWrite cannot justify text, default to left alignment
if (text.getTextAlignment() == AttributedString::justified)
dwTextFormat->SetTextAlignment (DWRITE_TEXT_ALIGNMENT_LEADING);
// Set Word Wrap
if (text.getWordWrap() == AttributedString::none)
dwTextFormat->SetWordWrapping (DWRITE_WORD_WRAPPING_NO_WRAP);
if (text.getWordWrap() == AttributedString::byWord)
dwTextFormat->SetWordWrapping (DWRITE_WORD_WRAPPING_WRAP);
// DirectWrite does not support wrapping by character, default to wrapping by word
if (text.getWordWrap() == AttributedString::byChar)
dwTextFormat->SetWordWrapping (DWRITE_WORD_WRAPPING_WRAP);
// DirectWrite does not automatically set reading direction
// This must be set correctly and manually when using RTL Scripts (Hebrew, Arabic)
if (text.getReadingDirection() == AttributedString::rightToLeft)
dwTextFormat->SetReadingDirection (DWRITE_READING_DIRECTION_RIGHT_TO_LEFT);
IDWriteTextLayout* dwTextLayout = nullptr;
hr = dwFactory->CreateTextLayout (
text.getText().toWideCharPointer(),
text.getText().length(),
dwTextFormat,
glyphLayout.getWidth(),
glyphLayout.getHeight(),
&dwTextLayout
);
// Character Attributes
int numCharacterAttributes = text.getCharAttributesSize();
for (int i = 0; i < numCharacterAttributes; ++i)
{
Attr* attr = text.getCharAttribute (i);
// Character Range Error Checking
if (attr->range.getStart() > text.getText().length()) continue;
if (attr->range.getEnd() > text.getText().length()) attr->range.setEnd (text.getText().length());
if (attr->attribute == Attr::font)
{
AttrFont* attrFont = static_cast<AttrFont*>(attr);
DWRITE_TEXT_RANGE dwRange;
dwRange.startPosition = attrFont->range.getStart();
dwRange.length = attrFont->range.getLength();
dwTextLayout->SetFontFamilyName (attrFont->font.getTypefaceName().toWideCharPointer(), dwRange);
// We multiply the font height by the size factor so we layout text at the correct size
const float fontHeightToEmSizeFactor = getFontHeightToEmSizeFactor (attrFont->font, *dwFontCollection);
dwTextLayout->SetFontSize (attrFont->font.getHeight() * fontHeightToEmSizeFactor, dwRange);
}
if (attr->attribute == Attr::foregroundColour)
{
AttrColour* attrColour = static_cast<AttrColour*>(attr);
DWRITE_TEXT_RANGE dwRange;
dwRange.startPosition = attrColour->range.getStart();
dwRange.length = attrColour->range.getLength();
ID2D1SolidColorBrush* d2dBrush = nullptr;
d2dDCRT->CreateSolidColorBrush (D2D1::ColorF (D2D1::ColorF(attrColour->colour.getFloatRed(),
attrColour->colour.getFloatGreen(), attrColour->colour.getFloatBlue(),
attrColour->colour.getFloatAlpha())), &d2dBrush);
// We need to call SetDrawingEffect with a legimate brush to get DirectWrite to break text based on colours
dwTextLayout->SetDrawingEffect (d2dBrush, dwRange);
safeRelease (&d2dBrush);
}
}
UINT32 actualLineCount = 0;
hr = dwTextLayout->GetLineMetrics (nullptr, 0, &actualLineCount);
// Preallocate GlyphLayout Line Array
glyphLayout.setNumLines (actualLineCount);
HeapBlock <DWRITE_LINE_METRICS> dwLineMetrics (actualLineCount);
hr = dwTextLayout->GetLineMetrics (dwLineMetrics, actualLineCount, &actualLineCount);
int location = 0;
// Create GlyphLine structures for each line in the layout
for (UINT32 i = 0; i < actualLineCount; ++i)
{
// Get string range
Range<int> lineStringRange (location, (int) location + dwLineMetrics[i].length);
location = dwLineMetrics[i].length;
GlyphLine* glyphLine = new GlyphLine();
glyphLine->setStringRange (lineStringRange);
glyphLayout.addGlyphLine (glyphLine);
}
// To copy glyph data from DirectWrite into our own data structures we must create our
// own CustomTextRenderer. Instead of passing the draw method an actual graphics context,
// we pass it the GlyphLayout object that needs to be filled with glyphs.
CustomDirectWriteTextRenderer* textRenderer = nullptr;
textRenderer = new CustomDirectWriteTextRenderer();
hr = dwTextLayout->Draw (
&glyphLayout,
textRenderer,
glyphLayout.getX(),
glyphLayout.getY()
);
safeRelease (&textRenderer);
safeRelease (&dwTextLayout);
safeRelease (&dwTextFormat);
safeRelease (&d2dDCRT);
safeRelease (&d2dFactory);
safeRelease (&dwFontCollection);
safeRelease (&dwFactory);
}
void nf_free(nf_font_t font)
{
if(font)
{
IDWriteTextFormat * format = (IDWriteTextFormat*)font;
format->Release();
}
nf_ctx_free();
}
int CDirectWriteRenderer::GetFitCharCount(LPCWSTR pText, int Length, int Width, CDirectWriteFont &Font)
{
if (pText == nullptr || Length == 0)
return 0;
if (m_pRenderTarget == nullptr)
return 0;
int FitCharCount = 0;
IDWriteFactory *pFactory = m_System.GetDWriteFactory();
if (pFactory != nullptr) {
IDWriteTextFormat *pTextFormat = Font.GetTextFormat();
if (pTextFormat != nullptr) {
IDWriteTextLayout *pTextLayout;
pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING);
pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
if (Length < 0)
Length = ::lstrlenW(pText);
HRESULT hr = pFactory->CreateTextLayout(
pText,
Length,
pTextFormat,
static_cast<float>(Width),
m_pRenderTarget->GetSize().height,
&pTextLayout);
if (SUCCEEDED(hr)) {
Util::CTempBuffer<DWRITE_CLUSTER_METRICS, 256> ClusterMetrics(Length);
UINT32 ClusterCount;
hr = pTextLayout->GetClusterMetrics(ClusterMetrics.GetBuffer(), Length, &ClusterCount);
if (SUCCEEDED(hr)) {
float Pos = 0.0f;
for (UINT32 i = 0; i < ClusterCount; i++) {
Pos += ClusterMetrics[i].width;
if (static_cast<int>(std::ceil(Pos)) > Width)
break;
FitCharCount += ClusterMetrics[i].length;
}
}
pTextLayout->Release();
}
pTextFormat->Release();
}
pFactory->Release();
}
return FitCharCount;
}
bool CDirectWriteRenderer::GetTextMetrics(
LPCWSTR pText, int Length, CDirectWriteFont &Font, TextMetrics *pMetrics)
{
if (pText == nullptr || pMetrics == nullptr)
return false;
if (m_pRenderTarget == nullptr)
return false;
HRESULT hr = E_UNEXPECTED;
IDWriteFactory *pFactory = m_System.GetDWriteFactory();
if (pFactory != nullptr) {
IDWriteTextFormat *pTextFormat = Font.GetTextFormat();
if (pTextFormat != nullptr) {
D2D1_SIZE_F Size;
IDWriteTextLayout *pTextLayout;
pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING);
pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
if (Length < 0)
Length = ::lstrlenW(pText);
Size = m_pRenderTarget->GetSize();
hr = pFactory->CreateTextLayout(
pText,
Length,
pTextFormat,
Size.width,
Size.height,
&pTextLayout);
if (SUCCEEDED(hr)) {
DWRITE_TEXT_METRICS Metrics;
hr = pTextLayout->GetMetrics(&Metrics);
if (SUCCEEDED(hr)) {
pMetrics->Width = Metrics.width;
pMetrics->WidthIncludingTrailingWhitespace = Metrics.widthIncludingTrailingWhitespace;
pMetrics->Height = Metrics.height;
}
pTextLayout->Release();
}
pTextFormat->Release();
}
pFactory->Release();
}
return SUCCEEDED(hr);
}
void Graphics::GDrawText(int x, int y, wchar_t* text, wchar_t* fontName, int fontSize, DWRITE_FONT_STYLE style, D2D1_COLOR_F color)
{
ID2D1SolidColorBrush* brush;
IDWriteTextFormat* textFormat;
UINT32 textLength;
textLength = (UINT32)wcslen(text);
writeFactory->CreateTextFormat(fontName, NULL, DWRITE_FONT_WEIGHT_REGULAR, style, DWRITE_FONT_STRETCH_NORMAL, fontSize, L"en-us", &textFormat);
textFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING);
renderTarget->CreateSolidColorBrush(D2D1::ColorF(D2D1::ColorF::White), &brush);
renderTarget->DrawTextW(text, textLength, textFormat, D2D1::RectF(x, y, fontSize * textLength, y + fontSize), brush);
SafeRelease(&brush);
SafeRelease(&textFormat);
}
void
DWriteContext::SetFont(const LOGFONTW &logFont)
{
SafeRelease(&mTextFormat);
mLastHFont = NULL;
HRESULT hr = SetLOGFONT(logFont, 0.f);
if (SUCCEEDED(hr))
hr = mTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING);
if (SUCCEEDED(hr))
hr = mTextFormat->SetParagraphAlignment(
DWRITE_PARAGRAPH_ALIGNMENT_CENTER);
if (SUCCEEDED(hr))
hr = mTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
}
bool CDirectWriteRenderer::GetFontMetrics(CDirectWriteFont &Font, FontMetrics *pMetrics)
{
if (pMetrics == nullptr)
return false;
if (m_pRenderTarget == nullptr)
return false;
HRESULT hr = E_UNEXPECTED;
IDWriteTextFormat *pTextFormat = Font.GetTextFormat();
if (pTextFormat != nullptr) {
IDWriteFontCollection *pFontCollection;
hr = pTextFormat->GetFontCollection(&pFontCollection);
if (SUCCEEDED(hr)) {
WCHAR szName[256];
hr = pTextFormat->GetFontFamilyName(szName, lengthof(szName));
if (SUCCEEDED(hr)) {
UINT32 Index;
BOOL fExists;
hr = pFontCollection->FindFamilyName(szName, &Index, &fExists);
if (SUCCEEDED(hr)) {
IDWriteFontFamily *pFontFamily;
hr = pFontCollection->GetFontFamily(Index, &pFontFamily);
if (SUCCEEDED(hr)) {
IDWriteFont *pFont;
hr = pFontFamily->GetFirstMatchingFont(
pTextFormat->GetFontWeight(),
pTextFormat->GetFontStretch(),
pTextFormat->GetFontStyle(),
&pFont);
if (SUCCEEDED(hr)) {
DWRITE_FONT_METRICS Metrics;
pFont->GetMetrics(&Metrics);
const float Ratio = pTextFormat->GetFontSize() / static_cast<float>(Metrics.designUnitsPerEm);
pMetrics->Ascent = Metrics.ascent * Ratio;
pMetrics->Descent = Metrics.descent * Ratio;
pMetrics->LineGap = Metrics.lineGap * Ratio;
pFont->Release();
}
pFontFamily->Release();
}
}
}
}
pFontCollection->Release();
}
return SUCCEEDED(hr);
}
// 创建字体格式
IDWriteTextFormat* TextFormatCache::CreateTextFormat(const TextFormat& font){
#ifdef _DEBUG
TextFormatCache::Map::iterator itr = s_mapTextCache.find(font);
if (itr != s_mapTextCache.end()){
_cwprintf(L"目标字体已存在.\n");
return itr->second;
}
if (!s_ppDWriteFactory){
_cwprintf(L"s_ppDWriteFactory未初始化.\n");
return NULL;
}
if (!(*s_ppDWriteFactory)){
_cwprintf(L"DWriteFactory未初始化.\n");
return NULL;
}
#endif
IDWriteTextFormat* pTF;
(*s_ppDWriteFactory)->CreateTextFormat(
font.font_name.c_str(),
s_pCollection,
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
font.font_size * (96.0f / 72.f),
L"", //locale
&pTF
);
if (pTF){
pTF->SetTextAlignment(font.font_alignment);
}
#ifdef _DEBUG
else
_cwprintf(L"IDWriteTextFormat 创建失败.\n");
#endif
s_mapTextCache.insert(Map::value_type(font, pTF));
return pTF;
}
void setTextFormatProperties (const AttributedString& text, IDWriteTextFormat& format)
{
DWRITE_TEXT_ALIGNMENT alignment = DWRITE_TEXT_ALIGNMENT_LEADING;
DWRITE_WORD_WRAPPING wrapType = DWRITE_WORD_WRAPPING_WRAP;
switch (text.getJustification().getOnlyHorizontalFlags())
{
case Justification::left: break;
case Justification::right: alignment = DWRITE_TEXT_ALIGNMENT_TRAILING; break;
case Justification::horizontallyCentred: alignment = DWRITE_TEXT_ALIGNMENT_CENTER; break;
case Justification::horizontallyJustified: break; // DirectWrite cannot justify text, default to left alignment
default: jassertfalse; break; // Illegal justification flags
}
switch (text.getWordWrap())
{
case AttributedString::none: wrapType = DWRITE_WORD_WRAPPING_NO_WRAP; break;
case AttributedString::byWord: break;
case AttributedString::byChar: break; // DirectWrite doesn't support wrapping by character, default to word-wrap
default: jassertfalse; break; // Illegal flags!
}
// DirectWrite does not automatically set reading direction
// This must be set correctly and manually when using RTL Scripts (Hebrew, Arabic)
if (text.getReadingDirection() == AttributedString::rightToLeft)
{
format.SetReadingDirection (DWRITE_READING_DIRECTION_RIGHT_TO_LEFT);
switch (text.getJustification().getOnlyHorizontalFlags())
{
case Justification::left: alignment = DWRITE_TEXT_ALIGNMENT_TRAILING; break;
case Justification::right: alignment = DWRITE_TEXT_ALIGNMENT_LEADING; break;
default: break;
}
}
format.SetTextAlignment (alignment);
format.SetWordWrapping (wrapType);
}
IDWriteTextFormat* createTextFormat(IDWriteFactory1* writeFactory, const char* fontName, bool alignmentCenterX, bool alignmentCenterY)
{
IDWriteTextFormat* textFormat;
// Create a DirectWrite text format object.
DX::ThrowIfFailed(
writeFactory->CreateTextFormat(
Utils::convertStringToWString(fontName).c_str(),//Gabriola
NULL,
DWRITE_FONT_WEIGHT_REGULAR,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
64.f,
L"en-US", // Locale
&textFormat
)
);
// Center the text horizontally and vertically.
textFormat->SetTextAlignment(alignmentCenterX ? DWRITE_TEXT_ALIGNMENT_CENTER : DWRITE_TEXT_ALIGNMENT_LEADING);
textFormat->SetParagraphAlignment(alignmentCenterY ? DWRITE_PARAGRAPH_ALIGNMENT_CENTER : DWRITE_PARAGRAPH_ALIGNMENT_NEAR);
return textFormat;
}
bool CDirectWriteRenderer::DrawText(
LPCWSTR pText, int Length, const RECT &Rect,
CDirectWriteFont &Font, CDirectWriteBrush &Brush, unsigned int Flags)
{
if (pText == nullptr)
return false;
if (m_pRenderTarget == nullptr)
return false;
bool fOK = false;
IDWriteTextFormat *pTextFormat = Font.GetTextFormat();
if (pTextFormat != nullptr) {
ID2D1Brush *pBrush = Brush.GetBrush();
if (pBrush != nullptr) {
pTextFormat->SetTextAlignment(
(Flags & DRAW_TEXT_ALIGN_HORZ_CENTER) != 0 ?
DWRITE_TEXT_ALIGNMENT_CENTER :
(Flags & DRAW_TEXT_ALIGN_RIGHT) != 0 ?
DWRITE_TEXT_ALIGNMENT_TRAILING :
((Flags & DRAW_TEXT_ALIGN_JUSTIFIED) != 0
&& Util::OS::IsWindows8OrLater()) ?
DWRITE_TEXT_ALIGNMENT_JUSTIFIED :
DWRITE_TEXT_ALIGNMENT_LEADING);
pTextFormat->SetParagraphAlignment(
(Flags & DRAW_TEXT_ALIGN_VERT_CENTER) != 0 ?
DWRITE_PARAGRAPH_ALIGNMENT_CENTER :
(Flags & DRAW_TEXT_ALIGN_BOTTOM) != 0 ?
DWRITE_PARAGRAPH_ALIGNMENT_FAR :
DWRITE_PARAGRAPH_ALIGNMENT_NEAR);
pTextFormat->SetWordWrapping(DWRITE_WORD_WRAPPING_NO_WRAP);
DWRITE_TRIMMING Trimming = {DWRITE_TRIMMING_GRANULARITY_NONE, 0, 0};
pTextFormat->SetTrimming(&Trimming, nullptr);
m_pRenderTarget->DrawText(
pText,
Length >= 0 ? Length : ::lstrlenW(pText),
pTextFormat,
D2DRectF(Rect),
pBrush);
fOK = true;
pBrush->Release();
}
pTextFormat->Release();
}
return fOK;
}
HRESULT SaveToImageFile()
{
HRESULT hr = S_OK;
//
// Create Factories
//
IWICImagingFactory *pWICFactory = NULL;
ID2D1Factory *pD2DFactory = NULL;
IDWriteFactory *pDWriteFactory = NULL;
IWICBitmap *pWICBitmap = NULL;
ID2D1RenderTarget *pRT = NULL;
IDWriteTextFormat *pTextFormat = NULL;
ID2D1PathGeometry *pPathGeometry = NULL;
ID2D1GeometrySink *pSink = NULL;
ID2D1GradientStopCollection *pGradientStops = NULL;
ID2D1LinearGradientBrush *pLGBrush = NULL;
ID2D1SolidColorBrush *pBlackBrush = NULL;
IWICBitmapEncoder *pEncoder = NULL;
IWICBitmapFrameEncode *pFrameEncode = NULL;
IWICStream *pStream = NULL;
hr = CoCreateInstance(
CLSID_WICImagingFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_IWICImagingFactory,
reinterpret_cast<void **>(&pWICFactory)
);
if (SUCCEEDED(hr))
{
hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &pD2DFactory);
}
if (SUCCEEDED(hr))
{
hr = DWriteCreateFactory(
DWRITE_FACTORY_TYPE_SHARED,
__uuidof(pDWriteFactory),
reinterpret_cast<IUnknown **>(&pDWriteFactory)
);
}
//
// Create IWICBitmap and RT
//
static const UINT sc_bitmapWidth = 640;
static const UINT sc_bitmapHeight = 480;
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateBitmap(
sc_bitmapWidth,
sc_bitmapHeight,
GUID_WICPixelFormat32bppBGR,
WICBitmapCacheOnLoad,
&pWICBitmap
);
}
if (SUCCEEDED(hr))
{
hr = pD2DFactory->CreateWicBitmapRenderTarget(
pWICBitmap,
D2D1::RenderTargetProperties(),
&pRT
);
}
if (SUCCEEDED(hr))
{
//
// Create text format
//
static const WCHAR sc_fontName[] = L"Calibri";
static const FLOAT sc_fontSize = 50;
hr = pDWriteFactory->CreateTextFormat(
sc_fontName,
NULL,
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
sc_fontSize,
L"", //locale
&pTextFormat
);
}
if (SUCCEEDED(hr))
{
pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER);
pTextFormat->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER);
//
// Create a path geometry representing an hour glass
//
hr = pD2DFactory->CreatePathGeometry(&pPathGeometry);
}
if (SUCCEEDED(hr))
{
hr = pPathGeometry->Open(&pSink);
}
if (SUCCEEDED(hr))
{
pSink->SetFillMode(D2D1_FILL_MODE_ALTERNATE);
pSink->BeginFigure(
D2D1::Point2F(0, 0),
D2D1_FIGURE_BEGIN_FILLED
);
pSink->AddLine(D2D1::Point2F(200, 0));
pSink->AddBezier(
D2D1::BezierSegment(
D2D1::Point2F(150, 50),
D2D1::Point2F(150, 150),
D2D1::Point2F(200, 200))
);
pSink->AddLine(D2D1::Point2F(0, 200));
pSink->AddBezier(
D2D1::BezierSegment(
D2D1::Point2F(50, 150),
D2D1::Point2F(50, 50),
D2D1::Point2F(0, 0))
);
pSink->EndFigure(D2D1_FIGURE_END_CLOSED);
hr = pSink->Close();
}
if (SUCCEEDED(hr))
{
//
// Create a linear-gradient brush
//
static const D2D1_GRADIENT_STOP stops[] =
{
{ 0.f, { 0.f, 1.f, 1.f, 1.f } },
{ 1.f, { 0.f, 0.f, 1.f, 1.f } },
};
hr = pRT->CreateGradientStopCollection(
stops,
ARRAYSIZE(stops),
&pGradientStops
);
}
if (SUCCEEDED(hr))
{
hr = pRT->CreateLinearGradientBrush(
D2D1::LinearGradientBrushProperties(
D2D1::Point2F(100, 0),
D2D1::Point2F(100, 200)),
D2D1::BrushProperties(),
pGradientStops,
&pLGBrush
);
}
if (SUCCEEDED(hr))
{
hr = pRT->CreateSolidColorBrush(
D2D1::ColorF(D2D1::ColorF::Black),
&pBlackBrush
);
}
if (SUCCEEDED(hr))
{
//
// Render into the bitmap
//
pRT->BeginDraw();
pRT->Clear(D2D1::ColorF(D2D1::ColorF::White));
D2D1_SIZE_F rtSize = pRT->GetSize();
// Set the world transform to a 45 degree rotation at the center of the render target
// and write "Hello, World".
pRT->SetTransform(
D2D1::Matrix3x2F::Rotation(
45,
D2D1::Point2F(
rtSize.width / 2,
rtSize.height / 2))
);
static const WCHAR sc_helloWorld[] = L"Hello, World!";
pRT->DrawText(
sc_helloWorld,
ARRAYSIZE(sc_helloWorld) - 1,
pTextFormat,
D2D1::RectF(0, 0, rtSize.width, rtSize.height),
pBlackBrush);
//
// Reset back to the identity transform
//
pRT->SetTransform(D2D1::Matrix3x2F::Translation(0, rtSize.height - 200));
pRT->FillGeometry(pPathGeometry, pLGBrush);
pRT->SetTransform(D2D1::Matrix3x2F::Translation(rtSize.width - 200, 0));
pRT->FillGeometry(pPathGeometry, pLGBrush);
hr = pRT->EndDraw();
}
if (SUCCEEDED(hr))
{
//
// Save image to file
//
hr = pWICFactory->CreateStream(&pStream);
}
WICPixelFormatGUID format = GUID_WICPixelFormatDontCare;
if (SUCCEEDED(hr))
{
static const WCHAR filename[] = L"output.png";
hr = pStream->InitializeFromFilename(filename, GENERIC_WRITE);
}
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateEncoder(GUID_ContainerFormatPng, NULL, &pEncoder);
}
if (SUCCEEDED(hr))
{
hr = pEncoder->Initialize(pStream, WICBitmapEncoderNoCache);
}
if (SUCCEEDED(hr))
{
hr = pEncoder->CreateNewFrame(&pFrameEncode, NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->Initialize(NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->SetSize(sc_bitmapWidth, sc_bitmapHeight);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->SetPixelFormat(&format);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->WriteSource(pWICBitmap, NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->Commit();
}
if (SUCCEEDED(hr))
{
hr = pEncoder->Commit();
}
SafeRelease(&pWICFactory);
SafeRelease(&pD2DFactory);
SafeRelease(&pDWriteFactory);
SafeRelease(&pWICBitmap);
SafeRelease(&pRT);
SafeRelease(&pTextFormat);
SafeRelease(&pPathGeometry);
SafeRelease(&pSink);
SafeRelease(&pGradientStops);
SafeRelease(&pLGBrush);
SafeRelease(&pBlackBrush);
SafeRelease(&pEncoder);
SafeRelease(&pFrameEncode);
SafeRelease(&pStream);
return hr;
}
void ImageWindow::OnPaint()
{
Mutex::Locker locker( frontBufferMutex );
// Nothing to do
if( frames.IsEmpty() )
return;
if( !frames.PeekFront(0)->ready )
return;
Ptr<Frame> currentFrame = frames.PopFront();
Ptr<Frame> nextFrame = NULL;
if( !frames.IsEmpty() )
nextFrame = frames.PeekFront(0);
while( nextFrame && nextFrame->ready )
{
// Free up the current frame since it's been removed from the deque
currentFrame = frames.PopFront();
if( frames.IsEmpty() )
break;
nextFrame = frames.PeekFront(0);
}
if( currentFrame->imageData )
greyBitmap->CopyFromMemory( NULL, currentFrame->imageData, currentFrame->width );
if( currentFrame->colorImageData )
colorBitmap->CopyFromMemory( NULL, currentFrame->colorImageData, currentFrame->colorPitch );
pRT->BeginDraw();
pRT->SetAntialiasMode(D2D1_ANTIALIAS_MODE_ALIASED);
pRT->Clear( D2D1::ColorF(D2D1::ColorF::Black) );
// This will mirror our image
D2D1_MATRIX_3X2_F m;
m._11 = -1; m._12 = 0;
m._21 = 0; m._22 = 1;
m._31 = 0; m._32 = 0;
pRT->SetTransform( m );
ID2D1SolidColorBrush* whiteBrush;
pRT->CreateSolidColorBrush( D2D1::ColorF(D2D1::ColorF::White, 1.0f), &whiteBrush );
if( currentFrame->imageData )
{
pRT->FillOpacityMask( greyBitmap, whiteBrush,
D2D1_OPACITY_MASK_CONTENT_TEXT_NATURAL,
D2D1::RectF( -(FLOAT)resolution.width, 0.0f, (FLOAT)0.0f, (FLOAT)resolution.height ),
//D2D1::RectF( 0.0f, 0.0f, (FLOAT)0.0f, (FLOAT)resolution.height ),
D2D1::RectF( 0.0f, 0.0f, (FLOAT)resolution.width, (FLOAT)resolution.height ) );
}
else if( currentFrame->colorImageData )
{
pRT->DrawBitmap( colorBitmap,
D2D1::RectF( -(FLOAT)resolution.width, 0.0f, (FLOAT)0.0f, (FLOAT)resolution.height ) );
}
pRT->SetTransform(D2D1::Matrix3x2F::Identity());
whiteBrush->Release();
Array<CirclePlot>::Iterator it;
for( it = currentFrame->plots.Begin(); it != currentFrame->plots.End(); ++it )
{
ID2D1SolidColorBrush* aBrush;
pRT->CreateSolidColorBrush( D2D1::ColorF( it->r, it->g, it->b), &aBrush );
D2D1_ELLIPSE ellipse;
ellipse.point.x = it->x;
ellipse.point.y = it->y;
ellipse.radiusX = it->radius;
ellipse.radiusY = it->radius;
if( it->fill )
pRT->FillEllipse( &ellipse, aBrush );
else
pRT->DrawEllipse( &ellipse, aBrush );
aBrush->Release();
}
static const WCHAR msc_fontName[] = L"Verdana";
static const FLOAT msc_fontSize = 20;
IDWriteTextFormat* textFormat = NULL;
// Create a DirectWrite text format object.
pDWriteFactory->CreateTextFormat(
msc_fontName,
NULL,
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
msc_fontSize,
L"", //locale
&textFormat
);
D2D1_SIZE_F renderTargetSize = pRT->GetSize();
Array<TextPlot>::Iterator textIt;
for( textIt = currentFrame->textLines.Begin(); textIt != currentFrame->textLines.End(); ++textIt )
{
ID2D1SolidColorBrush* aBrush;
pRT->CreateSolidColorBrush( D2D1::ColorF( textIt->r, textIt->g, textIt->b), &aBrush );
WCHAR* tmpString = (WCHAR*)calloc( textIt->text.GetLength(), sizeof( WCHAR ) );
for( unsigned i = 0; i < textIt->text.GetLength(); ++i )
{
tmpString[i] = (WCHAR)textIt->text.GetCharAt( i );
}
pRT->DrawText( tmpString, (UINT32)textIt->text.GetLength(), textFormat,
D2D1::RectF(textIt->x, textIt->y, renderTargetSize.width, renderTargetSize.height), aBrush );
free( tmpString );
aBrush->Release();
}
if( textFormat )
textFormat->Release();
pRT->EndDraw();
pRT->Flush();
}
static void fontDialogDrawSampleText(struct fontDialog *f, ID2D1RenderTarget *rt)
{
D2D1_COLOR_F color;
D2D1_BRUSH_PROPERTIES props;
ID2D1SolidColorBrush *black;
IDWriteFont *font;
IDWriteLocalizedStrings *sampleStrings;
BOOL exists;
WCHAR *sample;
WCHAR *family;
IDWriteTextFormat *format;
D2D1_RECT_F rect;
HRESULT hr;
color.r = 0.0;
color.g = 0.0;
color.b = 0.0;
color.a = 1.0;
ZeroMemory(&props, sizeof (D2D1_BRUSH_PROPERTIES));
props.opacity = 1.0;
// identity matrix
props.transform._11 = 1;
props.transform._22 = 1;
hr = rt->CreateSolidColorBrush(
&color,
&props,
&black);
if (hr != S_OK)
logHRESULT(L"error creating solid brush", hr);
font = (IDWriteFont *) cbGetItemData(f->styleCombobox, (WPARAM) f->curStyle);
hr = font->GetInformationalStrings(DWRITE_INFORMATIONAL_STRING_SAMPLE_TEXT, &sampleStrings, &exists);
if (hr != S_OK)
exists = FALSE;
if (exists) {
sample = fontCollectionCorrectString(f->fc, sampleStrings);
sampleStrings->Release();
} else
sample = L"The quick brown fox jumps over the lazy dog.";
// DirectWrite doesn't allow creating a text format from a font; we need to get this ourselves
family = cbGetItemText(f->familyCombobox, f->curFamily);
hr = dwfactory->CreateTextFormat(family,
NULL,
font->GetWeight(),
font->GetStyle(),
font->GetStretch(),
// typographic points are 1/72 inch; this parameter is 1/96 inch
// fortunately Microsoft does this too, in https://msdn.microsoft.com/en-us/library/windows/desktop/dd371554%28v=vs.85%29.aspx
f->curSize * (96.0 / 72.0),
// see http://stackoverflow.com/questions/28397971/idwritefactorycreatetextformat-failing and https://msdn.microsoft.com/en-us/library/windows/desktop/dd368203.aspx
// TODO use the current locale again?
L"",
&format);
if (hr != S_OK)
logHRESULT(L"error creating IDWriteTextFormat", hr);
uiFree(family);
rect.left = 0;
rect.top = 0;
rect.right = realGetSize(rt).width;
rect.bottom = realGetSize(rt).height;
rt->DrawText(sample, wcslen(sample),
format,
&rect,
black,
// TODO really?
D2D1_DRAW_TEXT_OPTIONS_NONE,
DWRITE_MEASURING_MODE_NATURAL);
format->Release();
if (exists)
uiFree(sample);
black->Release();
}
HRESULT SaveToImageFile(PlotData **data
, unsigned int imageWidth, unsigned int imageHeight
, float rangeX, float rangeY
, float leftMargin, float bottomMargin
, float xTick, float yTick)
{
HRESULT hr = S_OK;
//
// Create Factories
//
IWICImagingFactory *pWICFactory = NULL;
ID2D1Factory *pD2DFactory = NULL;
IDWriteFactory *pDWriteFactory = NULL;
IWICBitmap *pWICBitmap = NULL;
ID2D1RenderTarget *pRT = NULL;
IDWriteTextFormat *pTextFormat = NULL;
ID2D1SolidColorBrush *pSolidBrush = NULL;
IWICBitmapEncoder *pEncoder = NULL;
IWICBitmapFrameEncode *pFrameEncode = NULL;
IWICStream *pStream = NULL;
hr = CoCreateInstance(
CLSID_WICImagingFactory,
NULL,
CLSCTX_INPROC_SERVER,
IID_IWICImagingFactory,
reinterpret_cast<void **>(&pWICFactory)
);
if (SUCCEEDED(hr))
{
hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &pD2DFactory);
}
if (SUCCEEDED(hr))
{
hr = DWriteCreateFactory(
DWRITE_FACTORY_TYPE_SHARED,
__uuidof(pDWriteFactory),
reinterpret_cast<IUnknown **>(&pDWriteFactory)
);
}
//
// Create IWICBitmap and RT
//
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateBitmap(
imageWidth,
imageHeight,
GUID_WICPixelFormat32bppBGR,
WICBitmapCacheOnLoad,
&pWICBitmap
);
}
if (SUCCEEDED(hr))
{
hr = pD2DFactory->CreateWicBitmapRenderTarget(
pWICBitmap,
D2D1::RenderTargetProperties(),
&pRT
);
}
if (SUCCEEDED(hr))
{
//
// Create text format
//
static const WCHAR sc_fontName[] = L"Arial";
static const FLOAT sc_fontSize = 20;
hr = pDWriteFactory->CreateTextFormat(
sc_fontName,
NULL,
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
sc_fontSize,
L"", //locale
&pTextFormat
);
}
if (SUCCEEDED(hr))
{
pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER);
pTextFormat->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER);
//
// Create a path geometry representing an hour glass
//
}
if (SUCCEEDED(hr))
{
hr = pRT->CreateSolidColorBrush(
D2D1::ColorF(D2D1::ColorF::Black),
&pSolidBrush
);
}
if (SUCCEEDED(hr))
{
//
// Render into the bitmap
//
pRT->BeginDraw();
pRT->Clear(D2D1::ColorF(D2D1::ColorF::White));
D2D1_SIZE_F rtSize = pRT->GetSize();
//static const WCHAR sc_helloWorld[] = L"Hello, World!";
//pRT->DrawText(
// sc_helloWorld,
// ARRAYSIZE(sc_helloWorld) - 1,
// pTextFormat,
// D2D1::RectF(0, 0, rtSize.width, rtSize.height),
// pBlackBrush);
float scaleX = (rtSize.width - leftMargin) / rangeX;
float scaleY = (rtSize.height - bottomMargin) / rangeY;
//
// Reset back to the identity transform
//
pRT->DrawLine(D2D1::Point2F(leftMargin, 0.0f), D2D1::Point2F(leftMargin, rtSize.height - bottomMargin), pSolidBrush);
pRT->DrawLine(D2D1::Point2F(leftMargin, rtSize.height - bottomMargin), D2D1::Point2F(rtSize.width, rtSize.height - bottomMargin), pSolidBrush);
pSolidBrush->SetColor(D2D1::ColorF(D2D1::ColorF::LightGray, 0.4f));
size_t countTicks = rangeY / yTick;
for(size_t tick = 1; tick <= countTicks; ++tick)
{
float y = rtSize.height - bottomMargin - static_cast<float>(tick) * yTick * scaleY;
pRT->DrawLine(D2D1::Point2F(leftMargin - 3.0f, y), D2D1::Point2F(rtSize.width, y), pSolidBrush);
}
countTicks = rangeX / xTick;
for(size_t tick = 1; tick <= countTicks; ++tick)
{
float x = leftMargin + static_cast<float>(tick) * xTick * scaleX;
pRT->DrawLine(D2D1::Point2F(x, 0.0f), D2D1::Point2F(x, rtSize.height - bottomMargin + 3.0f), pSolidBrush);
}
//D2D1_MATRIX_3X2_F rotation = D2D1::Matrix3x2F::Rotation(-90.0f);
D2D1_MATRIX_3X2_F translation = D2D1::Matrix3x2F::Translation(leftMargin, rtSize.height - bottomMargin);
//D2D1_MATRIX_3X2_F scale = D2D1::Matrix3x2F::Scale(D2D1::SizeF(600.0f, 1.0f));
pRT->SetTransform(translation);
GraphData(data, pD2DFactory, pRT, pSolidBrush, scaleX, scaleY );
hr = pRT->EndDraw();
}
if (SUCCEEDED(hr))
{
//
// Save image to file
//
hr = pWICFactory->CreateStream(&pStream);
}
WICPixelFormatGUID format = GUID_WICPixelFormatDontCare;
if (SUCCEEDED(hr))
{
static const WCHAR filename[] = L"output.png";
hr = pStream->InitializeFromFilename(filename, GENERIC_WRITE);
}
if (SUCCEEDED(hr))
{
hr = pWICFactory->CreateEncoder(GUID_ContainerFormatPng, NULL, &pEncoder);
}
if (SUCCEEDED(hr))
{
hr = pEncoder->Initialize(pStream, WICBitmapEncoderNoCache);
}
if (SUCCEEDED(hr))
{
hr = pEncoder->CreateNewFrame(&pFrameEncode, NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->Initialize(NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->SetSize(imageWidth, imageHeight);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->SetPixelFormat(&format);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->WriteSource(pWICBitmap, NULL);
}
if (SUCCEEDED(hr))
{
hr = pFrameEncode->Commit();
}
if (SUCCEEDED(hr))
{
hr = pEncoder->Commit();
}
SafeRelease(&pWICFactory);
SafeRelease(&pD2DFactory);
SafeRelease(&pDWriteFactory);
SafeRelease(&pWICBitmap);
SafeRelease(&pRT);
SafeRelease(&pTextFormat);
SafeRelease(&pSolidBrush);
SafeRelease(&pEncoder);
SafeRelease(&pFrameEncode);
SafeRelease(&pStream);
return hr;
}
int _tmain(int argc, _TCHAR* argv[])
{
HRESULT hr = S_OK;
// Create a Direct2D factory.
CHECKHR(D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &g_pD2DFactory));
// Create a DirectWrite factory.
CHECKHR(DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory),
reinterpret_cast<IUnknown**>(&g_pDWriteFactory)));
// Create a WIC factory
IWICImagingFactory* pWICFactory = NULL;
CHECKHR(CoInitialize(nullptr));
CHECKHR(CoCreateInstance(CLSID_WICImagingFactory1, nullptr, CLSCTX_INPROC_SERVER,
IID_IWICImagingFactory, (LPVOID*)&pWICFactory));
// Create an IWICBitmap and RT
IWICBitmap* pWICBitmap = NULL;
static const UINT sc_bitmapWidth = 640;
static const UINT sc_bitmapHeight = 480;
CHECKHR(pWICFactory->CreateBitmap(sc_bitmapWidth, sc_bitmapHeight, GUID_WICPixelFormat32bppBGR,
WICBitmapCacheOnLoad,
&pWICBitmap));
// Set the render target type to D2D1_RENDER_TARGET_TYPE_DEFAULT to use software rendering.
CHECKHR(g_pD2DFactory->CreateWicBitmapRenderTarget(
pWICBitmap, D2D1::RenderTargetProperties(), &g_pRenderTarget));
// Create text format and a path geometry representing an hour glass.
IDWriteTextFormat* pTextFormat = NULL;
static const WCHAR sc_fontName[] = L"Calibri";
static const FLOAT sc_fontSize = 50;
CHECKHR(g_pDWriteFactory->CreateTextFormat(
sc_fontName,
NULL,
DWRITE_FONT_WEIGHT_NORMAL,
DWRITE_FONT_STYLE_NORMAL,
DWRITE_FONT_STRETCH_NORMAL,
sc_fontSize,
L"", //locale
&pTextFormat
));
CHECKHR(pTextFormat->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER));
CHECKHR(pTextFormat->SetParagraphAlignment(DWRITE_PARAGRAPH_ALIGNMENT_CENTER));
// Create a path geometry
ID2D1PathGeometry* pPathGeometry = NULL;
ID2D1GeometrySink* pSink = NULL;
CHECKHR(g_pD2DFactory->CreatePathGeometry(&pPathGeometry));
CHECKHR(pPathGeometry->Open(&pSink));
pSink->SetFillMode(D2D1_FILL_MODE_ALTERNATE);
pSink->BeginFigure(
D2D1::Point2F(0, 0),
D2D1_FIGURE_BEGIN_FILLED
);
pSink->AddLine(D2D1::Point2F(200, 0));
pSink->AddBezier(
D2D1::BezierSegment(
D2D1::Point2F(150, 50),
D2D1::Point2F(150, 150),
D2D1::Point2F(200, 200))
);
pSink->AddLine(D2D1::Point2F(0, 200));
pSink->AddBezier(
D2D1::BezierSegment(
D2D1::Point2F(50, 150),
D2D1::Point2F(50, 50),
D2D1::Point2F(0, 0))
);
pSink->EndFigure(D2D1_FIGURE_END_CLOSED);
CHECKHR(pSink->Close());
// Create GradientStopCollection
ID2D1GradientStopCollection *pGradientStops = NULL;
static const D2D1_GRADIENT_STOP stops[] =
{
{ 0.f, { 0.f, 1.f, 1.f, 1.f } },
{ 1.f, { 0.f, 0.f, 1.f, 1.f } },
};
CHECKHR(g_pRenderTarget->CreateGradientStopCollection(
stops,
ARRAYSIZE(stops),
&pGradientStops
));
ID2D1LinearGradientBrush* pLGBrush = NULL;
ID2D1SolidColorBrush* pBlackBrush = NULL;
CHECKHR(g_pRenderTarget->CreateLinearGradientBrush(
D2D1::LinearGradientBrushProperties(
D2D1::Point2F(100, 0),
D2D1::Point2F(100, 200)),
D2D1::BrushProperties(),
pGradientStops,
&pLGBrush
));
CHECKHR(g_pRenderTarget->CreateSolidColorBrush(
D2D1::ColorF(D2D1::ColorF::Black),
&pBlackBrush
));
// Render into the bitmap.
g_pRenderTarget->BeginDraw();
g_pRenderTarget->Clear(D2D1::ColorF(D2D1::ColorF::White));
D2D1_SIZE_F rtSize = g_pRenderTarget->GetSize();
// Set the world transform to a 45 degree rotation at the center of the render target
// and write "Hello, World".
g_pRenderTarget->SetTransform(
D2D1::Matrix3x2F::Rotation(
45,
D2D1::Point2F(
rtSize.width / 2,
rtSize.height / 2))
);
static const WCHAR sc_helloWorld[] = L"Hello, World!";
g_pRenderTarget->DrawText(
sc_helloWorld,
ARRAYSIZE(sc_helloWorld) - 1,
pTextFormat,
D2D1::RectF(0, 0, rtSize.width, rtSize.height),
pBlackBrush);
// Reset back to the identity transform.
g_pRenderTarget->SetTransform(D2D1::Matrix3x2F::Translation(0, rtSize.height - 200));
g_pRenderTarget->FillGeometry(pPathGeometry, pLGBrush);
g_pRenderTarget->SetTransform(D2D1::Matrix3x2F::Translation(rtSize.width - 200, 0));
g_pRenderTarget->FillGeometry(pPathGeometry, pLGBrush);
CHECKHR(g_pRenderTarget->EndDraw());
// Save the image to a file.
IWICStream* pStream = NULL;
CHECKHR(pWICFactory->CreateStream(&pStream));
// Use InitializeFromFilename to write to a file. If there is need to write inside the memory, use InitializeFromMemory.
static const WCHAR filename[] = L"output.png";
CHECKHR(pStream->InitializeFromFilename(filename, GENERIC_WRITE));
IWICBitmapEncoder* pEncoder = NULL;
CHECKHR(pWICFactory->CreateEncoder(GUID_ContainerFormatPng, NULL, &pEncoder));
CHECKHR(pEncoder->Initialize(pStream, WICBitmapEncoderNoCache));
IWICBitmapFrameEncode* pFrameEncode = NULL;
CHECKHR(pEncoder->CreateNewFrame(&pFrameEncode, NULL));
// Use IWICBitmapFrameEncode to encode the bitmap into the picture format you want.
CHECKHR(pFrameEncode->Initialize(NULL));
CHECKHR(pFrameEncode->SetSize(sc_bitmapWidth, sc_bitmapHeight));
WICPixelFormatGUID format = GUID_WICPixelFormatDontCare;
CHECKHR(pFrameEncode->SetPixelFormat(&format));
CHECKHR(pFrameEncode->WriteSource(pWICBitmap, NULL));
CHECKHR(pFrameEncode->Commit());
CHECKHR(pEncoder->Commit());
return 0;
}