// 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);
}
touchmind::VISITOR_RESULT operator()(std::shared_ptr<touchmind::model::node::NodeModel> node) {
HRESULT hr = S_OK;
m_pXPSPrint->_PrintNode(node);
if (FAILED(hr)) {
LOG(SEVERITY_LEVEL_WARN) << L"_PrintNodeBody failed at node(" << node->GetId() << L", hr = " << hr;
return touchmind::VISITOR_RESULT_STOP;
}
XpsDWriteTextRenderer* pTextRenderer = m_pXPSPrint->GetTextRenderer();
touchmind::view::node::NodeViewManager *pNodeViewManager = m_pXPSPrint->GetNodeViewManager();
control::DWriteEditControlManager *pEditControlManager = m_pXPSPrint->GetEditControlManager();
control::EDIT_CONTROL_INDEX editControlIndex = pNodeViewManager->GetEditControlIndexFromNodeId(node->GetId());
std::shared_ptr<control::DWriteEditControl> pEditControl = pEditControlManager->GetEditControl(editControlIndex);
if (pEditControl != nullptr) {
IDWriteTextLayout* pTextLayout = pEditControl->GetTextLayout();
if (pTextLayout != nullptr) {
pTextLayout->Draw(nullptr,
pTextRenderer,
node->GetX() + m_pXPSPrint->GetConfiguration()->GetInsets().left,
node->GetY() + m_pXPSPrint->GetConfiguration()->GetInsets().top);
} else {
LOG(SEVERITY_LEVEL_WARN) << L"TextLayout is null";
}
} else {
LOG(SEVERITY_LEVEL_WARN) << L"Could not found EditControl for Node(" << node->GetId() << L")";
}
return touchmind::VISITOR_RESULT_CONTINUE;
}
void
DWriteContext::DrawText(HDC hdc, const WCHAR* text, int len,
int x, int y, int w, int h, int cellWidth, COLORREF color)
{
HRESULT hr = S_OK;
IDWriteBitmapRenderTarget *bmpRT = NULL;
// Skip when any fonts are not set.
if (mTextFormat == NULL)
return;
// Check possibility of zero divided error.
if (cellWidth == 0 || mDpiScaleX == 0.0f || mDpiScaleY == 0.0f)
return;
if (SUCCEEDED(hr))
hr = mGdiInterop->CreateBitmapRenderTarget(hdc, w, h, &bmpRT);
if (SUCCEEDED(hr))
{
IDWriteTextLayout *textLayout = NULL;
HDC memdc = bmpRT->GetMemoryDC();
BitBlt(memdc, 0, 0, w, h, hdc, x, y, SRCCOPY);
hr = mDWriteFactory->CreateGdiCompatibleTextLayout(
text, len, mTextFormat, PixelsToDipsX(w),
PixelsToDipsY(h), mDpiScaleX, NULL, TRUE, &textLayout);
if (SUCCEEDED(hr))
{
DWRITE_TEXT_RANGE textRange = { 0, (UINT32)len };
textLayout->SetFontWeight(mFontWeight, textRange);
textLayout->SetFontStyle(mFontStyle, textRange);
}
if (SUCCEEDED(hr))
{
GdiTextRenderer *renderer = new GdiTextRenderer(bmpRT,
mRenderingParams);
GdiTextRendererContext data = {
color,
PixelsToDipsX(cellWidth),
0.0f
};
textLayout->Draw(&data, renderer, 0, 0);
SafeRelease(&renderer);
}
BitBlt(hdc, x, y, w, h, memdc, 0, 0, SRCCOPY);
SafeRelease(&textLayout);
}
SafeRelease(&bmpRT);
}
void DrawNormal(const Chat &chat, int vpos) {
int x = static_cast<int>(rcWnd_.right - (float)(chat.width + rcWnd_.right) * (vpos - chat.vpos) / VPOS_LEN);
int y = static_cast<int>(((float)yPitch_ * CNJIni::GetSettings()->commentLineMargin) * (float)chat.line);
IDWriteTextLayout *pLayout;
pDWriteFactory_->CreateTextLayout(chat.text.c_str(), chat.text.length(), pTextFormat_, 1920, 1200, &pLayout);
D2D1_POINT_2F pt = {static_cast<FLOAT>(x) / dpiScaleX_, static_cast<FLOAT>(y) / dpiScaleY_};
ID2D1SolidColorBrush *pColor;
pRT_->CreateSolidColorBrush(
D2D1::ColorF(bgr2rgb(chat.color)),
&pColor
);
renderer_->SetColorBrush(pColor);
pLayout->Draw(NULL, pTextRenderer_, pt.x, pt.y);
pColor->Release();
pLayout->Release();
}
Glyph* D3DGlyphProvider::getGlyph(UChar ch, float emsize)
{
HRESULT hr = S_OK;
IDWriteTextLayout* ptextlayout = NULL;
ASSERT_PTR(mpTextFormat);
hr = mpDWriteFactory->CreateTextLayout(&ch, 1, mpTextFormat, 512, 512, &ptextlayout);
if ( SUCCEEDED(hr) )
{
DWRITE_TEXT_RANGE range = { 0, 0 };
ptextlayout->SetFontSize(emsize, range);
AutoPtr<Glyph> glyph = new Glyph();
hr = ptextlayout->Draw(glyph.getPointer(), mpTextRenderer, 0, 0);
if ( SUCCEEDED(hr) )
{
return glyph.release();
}
}
return NULL;
}
void DrawShita(const Chat &chat) {
RECT rc;
rc.top = rcWnd_.bottom - yPitch_ - static_cast<LONG>(chat.line * (int)((float)yPitch_ * CNJIni::GetSettings()->commentLineMargin));
rc.bottom = rc.top + yPitch_;
rc.left = 0;
rc.right = rcWnd_.right;
D2D1_RECT_F layoutRect = D2D1::RectF(
static_cast<FLOAT>(rc.left) / dpiScaleX_,
static_cast<FLOAT>(rc.top) / dpiScaleY_,
static_cast<FLOAT>(rc.right) / dpiScaleX_,
static_cast<FLOAT>(rc.bottom) / dpiScaleY_
);
pTextFormat_->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_CENTER);
IDWriteTextLayout *pLayout;
pDWriteFactory_->CreateTextLayout(
chat.text.c_str(),
chat.text.length(),
pTextFormat_,
static_cast<FLOAT>(rc.right) / dpiScaleX_,
static_cast<FLOAT>(yPitch_) / dpiScaleY_,
&pLayout
);
D2D1_POINT_2F pt = {static_cast<FLOAT>(rc.left) / dpiScaleX_, static_cast<FLOAT>(rc.top) / dpiScaleY_};
ID2D1SolidColorBrush *pColor;
pRT_->CreateSolidColorBrush(
D2D1::ColorF(bgr2rgb(chat.color)),
&pColor
);
renderer_->SetColorBrush(pColor);
pLayout->Draw(NULL, pTextRenderer_, pt.x, pt.y);
pColor->Release();
pLayout->Release();
pTextFormat_->SetTextAlignment(DWRITE_TEXT_ALIGNMENT_LEADING);
}
