void FontRendererImpl::DrawText(fwWString text, const CRect& rect, const CRGBA& color, float fontSize, float fontScale, fwString fontRef)
{
// wait for a swap to complete
FrpSeqAllocatorWaitForSwap();
m_mutex.lock();
// create or find a text format
ComPtr<IDWriteTextFormat> textFormat;
auto formatKey = std::make_pair(fontRef, fontSize);
auto formatIter = m_textFormatCache.find(formatKey);
if (formatIter != m_textFormatCache.end())
{
textFormat = formatIter->second;
}
else
{
wchar_t fontRefWide[128];
mbstowcs(fontRefWide, fontRef.c_str(), _countof(fontRefWide));
m_dwFactory->CreateTextFormat(fontRefWide, nullptr, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL, DWRITE_FONT_STRETCH_NORMAL, fontSize, L"en-us", textFormat.GetAddressOf());
m_textFormatCache[formatKey] = textFormat;
}
// create or find a cached text layout
ComPtr<IDWriteTextLayout> textLayout;
auto layoutKey = std::make_pair(textFormat.Get(), std::make_pair(color.AsARGB(), text));
auto layoutIter = m_textLayoutCache.find(layoutKey);
if (layoutIter != m_textLayoutCache.end())
{
textLayout = layoutIter->second;
}
else
{
m_dwFactory->CreateTextLayout(text.c_str(), text.length(), textFormat.Get(), rect.Width(), rect.Height(), textLayout.GetAddressOf());
m_textLayoutCache[layoutKey] = textLayout;
// set effect
DWRITE_TEXT_RANGE effectRange = { 0, UINT32_MAX };
ComPtr<CitizenDrawingEffect> effect = Make<CitizenDrawingEffect>();
effect->SetColor(color);
textLayout->SetDrawingEffect((IUnknown*)effect.Get(), effectRange);
}
// draw
auto drawingContext = new CitizenDrawingContext();
textLayout->Draw(drawingContext, m_textRenderer.Get(), rect.Left(), rect.Top());
auto numRuns = drawingContext->glyphRuns.size();
if (numRuns)
{
for (auto& run : drawingContext->glyphRuns)
{
m_queuedGlyphRuns.push_back(run);
}
}
delete drawingContext;
m_mutex.unlock();
}
void FontRendererImpl::DrawText(const std::string& text, const Rect& rect, const RGBA& color, float fontSize, float fontScale, const std::string& fontRef)
{
// wait for a swap to complete
FrpSeqAllocatorWaitForSwap();
m_mutex.lock();
// create or find a text format
ComPtr<IDWriteTextFormat> textFormat;
auto formatKey = std::make_pair(fontRef, fontSize);
auto formatIter = m_textFormatCache.find(formatKey);
if (formatIter != m_textFormatCache.end())
{
textFormat = formatIter->second;
}
else
{
m_dwFactory->CreateTextFormat(ToWide(fontRef).c_str(), nullptr, DWRITE_FONT_WEIGHT_NORMAL, DWRITE_FONT_STYLE_NORMAL, DWRITE_FONT_STRETCH_NORMAL, fontSize, L"en-us", textFormat.GetAddressOf());
m_textFormatCache[formatKey] = textFormat;
}
// create or find a cached text layout
ComPtr<IDWriteTextLayout> textLayout;
auto layoutKey = std::make_pair(textFormat.Get(), std::make_pair(color.AsARGB(), text));
auto layoutIter = m_textLayoutCache.find(layoutKey);
if (layoutIter != m_textLayoutCache.end())
{
textLayout = layoutIter->second;
}
else
{
std::wstring wideText = ToWide(text);
// parse colors and the lot
std::wstring noColorTextString;
std::vector<DWRITE_TEXT_RANGE> textRanges;
std::vector<RGBA> textColors;
{
std::wstringstream noColorText;
int count = 0;
static const RGBA colors[] = {
RGBA(0, 0, 0),
RGBA(255, 0, 0),
RGBA(0, 255, 0),
RGBA(255, 255, 0),
RGBA(0, 0, 255),
RGBA(0, 255, 255),
RGBA(255, 0, 255),
RGBA(255, 255, 255),
RGBA(100, 0, 0),
RGBA(0, 0, 100)
};
textRanges.reserve(50);
textColors.reserve(50);
textRanges.push_back({ 0, UINT32_MAX });
textColors.push_back(color);
for (int i = 0; i < wideText.length(); i++)
{
if (wideText[i] == '^' && (i + 1) < wideText.length() && isdigit(wideText[i + 1]))
{
textRanges.back().length = count - textRanges.back().startPosition;
textRanges.push_back({ (UINT32)count, UINT32_MAX });
textColors.push_back(colors[wideText[i + 1] - '0']);
++i;
continue;
}
noColorText << wideText[i];
++count;
}
textRanges.back().length = count - textRanges.back().startPosition;
noColorTextString = noColorText.str();
}
m_dwFactory->CreateTextLayout(noColorTextString.c_str(), static_cast<UINT32>(noColorTextString.length()), textFormat.Get(), rect.Width(), rect.Height(), textLayout.GetAddressOf());
m_textLayoutCache[layoutKey] = textLayout;
// set effect
for (size_t i : irange(textRanges.size()))
{
DWRITE_TEXT_RANGE effectRange = textRanges[i];
RGBA color = textColors[i];
static thread_local std::map<uint32_t, ComPtr<FrDrawingEffect>> effects;
auto it = effects.find(color.AsARGB());
if (it == effects.end())
{
ComPtr<FrDrawingEffect> effect = Make<FrDrawingEffect>();
effect->SetColor(textColors[i]);
it = effects.insert({ color.AsARGB(), effect }).first;
}
check(SUCCEEDED(textLayout->SetDrawingEffect((IUnknown*)it->second.Get(), effectRange)));
}
}
// draw
auto drawingContext = new FrDrawingContext();
textLayout->Draw(drawingContext, m_textRenderer.Get(), rect.Left(), rect.Top());
auto numRuns = drawingContext->glyphRuns.size();
if (numRuns)
{
for (auto& run : drawingContext->glyphRuns)
{
m_queuedRenderables.push_back(std::make_unique<FrGlyphRunRenderable>(run));
//m_queuedGlyphRuns.push_back(run);
}
}
delete drawingContext;
m_mutex.unlock();
}