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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <win/salgdi.h>
#include <win/saldata.hxx>
#include <outdev.h>
#include <win/DWriteTextRenderer.hxx>
#include <sft.hxx>
#include <sallayout.hxx>
#include <shlwapi.h>
#include <winver.h>
#include <comphelper/windowserrorstring.hxx>
#include <sal/log.hxx>
HINSTANCE D2DWriteTextOutRenderer::mmD2d1 = nullptr,
D2DWriteTextOutRenderer::mmDWrite = nullptr;
D2DWriteTextOutRenderer::pD2D1CreateFactory_t D2DWriteTextOutRenderer::D2D1CreateFactory = nullptr;
D2DWriteTextOutRenderer::pDWriteCreateFactory_t D2DWriteTextOutRenderer::DWriteCreateFactory = nullptr;
bool D2DWriteTextOutRenderer::InitModules()
{
mmD2d1 = LoadLibraryW(L"D2d1.dll");
mmDWrite = LoadLibraryW(L"dwrite.dll");
if (mmD2d1 && mmDWrite)
{
D2D1CreateFactory = pD2D1CreateFactory_t(GetProcAddress(mmD2d1, "D2D1CreateFactory"));
DWriteCreateFactory = pDWriteCreateFactory_t(GetProcAddress(mmDWrite, "DWriteCreateFactory"));
}
if (!D2D1CreateFactory || !DWriteCreateFactory)
{
CleanupModules();
return false;
}
return true;
}
void D2DWriteTextOutRenderer::CleanupModules()
{
if (mmD2d1)
FreeLibrary(mmD2d1);
if (mmDWrite)
FreeLibrary(mmDWrite);
mmD2d1 = nullptr;
mmDWrite = nullptr;
D2D1CreateFactory = nullptr;
DWriteCreateFactory = nullptr;
}
namespace
{
D2DTextAntiAliasMode lclGetSystemTextAntiAliasMode()
{
D2DTextAntiAliasMode eMode = D2DTextAntiAliasMode::Default;
BOOL bFontSmoothing;
if (!SystemParametersInfoW(SPI_GETFONTSMOOTHING, 0, &bFontSmoothing, 0))
return eMode;
if (bFontSmoothing)
{
eMode = D2DTextAntiAliasMode::AntiAliased;
UINT nType;
if (SystemParametersInfoW(SPI_GETFONTSMOOTHINGTYPE, 0, &nType, 0) && nType == FE_FONTSMOOTHINGCLEARTYPE)
eMode = D2DTextAntiAliasMode::ClearType;
}
else
{
eMode = D2DTextAntiAliasMode::Aliased;
}
return eMode;
}
IDWriteRenderingParams* lclSetRenderingMode(IDWriteFactory* pDWriteFactory, DWRITE_RENDERING_MODE eRenderingMode)
{
IDWriteRenderingParams* pDefaultParameters = nullptr;
pDWriteFactory->CreateRenderingParams(&pDefaultParameters);
IDWriteRenderingParams* pParameters = nullptr;
pDWriteFactory->CreateCustomRenderingParams(
pDefaultParameters->GetGamma(),
pDefaultParameters->GetEnhancedContrast(),
pDefaultParameters->GetClearTypeLevel(),
pDefaultParameters->GetPixelGeometry(),
eRenderingMode,
&pParameters);
return pParameters;
}
#ifdef SAL_LOG_WARN
HRESULT checkResult(HRESULT hr, const char* file, size_t line)
{
if (FAILED(hr))
{
OUString sLocationString = OUString::createFromAscii(file) + ":" + OUString::number(line) + " ";
SAL_DETAIL_LOG_STREAM(SAL_DETAIL_ENABLE_LOG_WARN, ::SAL_DETAIL_LOG_LEVEL_WARN,
"vcl.gdi", sLocationString.toUtf8().getStr(),
"HRESULT failed with: 0x" << OUString::number(hr, 16) << ": " << WindowsErrorStringFromHRESULT(hr));
}
return hr;
}
#define CHECKHR(funct) checkResult(funct, __FILE__, __LINE__)
#else
#define CHECKHR(funct) (funct)
#endif
} // end anonymous namespace
D2DWriteTextOutRenderer::D2DWriteTextOutRenderer()
: mpD2DFactory(nullptr),
mpDWriteFactory(nullptr),
mpGdiInterop(nullptr),
mpRT(nullptr),
mRTProps(D2D1::RenderTargetProperties(D2D1_RENDER_TARGET_TYPE_DEFAULT,
D2D1::PixelFormat(DXGI_FORMAT_B8G8R8A8_UNORM, D2D1_ALPHA_MODE_PREMULTIPLIED),
0, 0)),
mpFontFace(nullptr),
mlfEmHeight(0.0f),
mhDC(nullptr),
meTextAntiAliasMode(D2DTextAntiAliasMode::Default)
{
HRESULT hr = S_OK;
hr = D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, __uuidof(ID2D1Factory), nullptr, reinterpret_cast<void **>(&mpD2DFactory));
hr = DWriteCreateFactory(DWRITE_FACTORY_TYPE_SHARED, __uuidof(IDWriteFactory), reinterpret_cast<IUnknown**>(&mpDWriteFactory));
if (SUCCEEDED(hr))
{
hr = mpDWriteFactory->GetGdiInterop(&mpGdiInterop);
hr = CreateRenderTarget();
}
meTextAntiAliasMode = lclGetSystemTextAntiAliasMode();
}
D2DWriteTextOutRenderer::~D2DWriteTextOutRenderer()
{
if (mpRT)
mpRT->Release();
if (mpGdiInterop)
mpGdiInterop->Release();
if (mpDWriteFactory)
mpDWriteFactory->Release();
if (mpD2DFactory)
mpD2DFactory->Release();
CleanupModules();
}
void D2DWriteTextOutRenderer::applyTextAntiAliasMode()
{
D2D1_TEXT_ANTIALIAS_MODE eTextAAMode = D2D1_TEXT_ANTIALIAS_MODE_DEFAULT;
DWRITE_RENDERING_MODE eRenderingMode = DWRITE_RENDERING_MODE_DEFAULT;
switch (meTextAntiAliasMode)
{
case D2DTextAntiAliasMode::Default:
eRenderingMode = DWRITE_RENDERING_MODE_DEFAULT;
eTextAAMode = D2D1_TEXT_ANTIALIAS_MODE_DEFAULT;
break;
case D2DTextAntiAliasMode::Aliased:
eRenderingMode = DWRITE_RENDERING_MODE_ALIASED;
eTextAAMode = D2D1_TEXT_ANTIALIAS_MODE_ALIASED;
break;
case D2DTextAntiAliasMode::AntiAliased:
eRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC;
eTextAAMode = D2D1_TEXT_ANTIALIAS_MODE_GRAYSCALE;
break;
case D2DTextAntiAliasMode::ClearType:
eRenderingMode = DWRITE_RENDERING_MODE_CLEARTYPE_GDI_CLASSIC;
eTextAAMode = D2D1_TEXT_ANTIALIAS_MODE_CLEARTYPE;
break;
default:
break;
}
mpRT->SetTextRenderingParams(lclSetRenderingMode(mpDWriteFactory, eRenderingMode));
mpRT->SetTextAntialiasMode(eTextAAMode);
}
HRESULT D2DWriteTextOutRenderer::CreateRenderTarget()
{
if (mpRT)
{
mpRT->Release();
mpRT = nullptr;
}
HRESULT hr = CHECKHR(mpD2DFactory->CreateDCRenderTarget(&mRTProps, &mpRT));
if (SUCCEEDED(hr))
applyTextAntiAliasMode();
return hr;
}
void D2DWriteTextOutRenderer::changeTextAntiAliasMode(D2DTextAntiAliasMode eMode)
{
if (meTextAntiAliasMode != eMode)
{
meTextAntiAliasMode = eMode;
applyTextAntiAliasMode();
}
}
bool D2DWriteTextOutRenderer::Ready() const
{
return mpGdiInterop && mpRT;
}
HRESULT D2DWriteTextOutRenderer::BindDC(HDC hDC, tools::Rectangle const & rRect)
{
RECT const rc = { rRect.Left(), rRect.Top(), rRect.Right(), rRect.Bottom() };
return CHECKHR(mpRT->BindDC(hDC, &rc));
}
bool D2DWriteTextOutRenderer::operator ()(GenericSalLayout const & rLayout, SalGraphics& rGraphics, HDC hDC)
{
bool bRetry = false;
bool bResult = false;
int nCount = 0;
do
{
bRetry = false;
bResult = performRender(rLayout, rGraphics, hDC, bRetry);
nCount++;
} while (bRetry && nCount < 3);
return bResult;
}
bool D2DWriteTextOutRenderer::performRender(GenericSalLayout const & rLayout, SalGraphics& rGraphics, HDC hDC, bool& bRetry)
{
if (!Ready())
return false;
HRESULT hr = S_OK;
hr = BindDC(hDC);
if (hr == D2DERR_RECREATE_TARGET)
{
CreateRenderTarget();
bRetry = true;
return false;
}
if (FAILED(hr))
{
// If for any reason we can't bind fallback to legacy APIs.
return ExTextOutRenderer()(rLayout, rGraphics, hDC);
}
mlfEmHeight = 0;
if (!GetDWriteFaceFromHDC(hDC, &mpFontFace, &mlfEmHeight))
return false;
tools::Rectangle bounds;
bool succeeded = rLayout.GetBoundRect(bounds);
if (succeeded)
{
hr = BindDC(hDC, bounds); // Update the bounding rect.
succeeded &= SUCCEEDED(hr);
}
ID2D1SolidColorBrush* pBrush = nullptr;
if (succeeded)
{
COLORREF bgrTextColor = GetTextColor(hDC);
D2D1::ColorF aD2DColor(GetRValue(bgrTextColor) / 255.0f, GetGValue(bgrTextColor) / 255.0f, GetBValue(bgrTextColor) / 255.0f);
succeeded &= SUCCEEDED(CHECKHR(mpRT->CreateSolidColorBrush(aD2DColor, &pBrush)));
}
if (succeeded)
{
mpRT->BeginDraw();
int nStart = 0;
Point aPos(0, 0);
const GlyphItem* pGlyph;
while (rLayout.GetNextGlyph(&pGlyph, aPos, nStart))
{
UINT16 glyphIndices[] = { pGlyph->m_aGlyphId };
FLOAT glyphAdvances[] = { static_cast<FLOAT>(pGlyph->m_nNewWidth) };
DWRITE_GLYPH_OFFSET glyphOffsets[] = { { 0.0f, 0.0f }, };
D2D1_POINT_2F baseline = { static_cast<FLOAT>(aPos.X() - bounds.Left()), static_cast<FLOAT>(aPos.Y() - bounds.Top()) };
DWRITE_GLYPH_RUN glyphs = {
mpFontFace,
mlfEmHeight,
1,
glyphIndices,
glyphAdvances,
glyphOffsets,
false,
0
};
mpRT->DrawGlyphRun(baseline, &glyphs, pBrush);
}
hr = CHECKHR(mpRT->EndDraw());
}
if (pBrush)
pBrush->Release();
ReleaseFont();
if (hr == D2DERR_RECREATE_TARGET)
{
CreateRenderTarget();
bRetry = true;
}
return succeeded;
}
bool D2DWriteTextOutRenderer::BindFont(HDC hDC)
{
// A TextOutRender can only be bound to one font at a time, so the
assert(mpFontFace == nullptr);
if (mpFontFace)
{
ReleaseFont();
return false;
}
// Initially bind to an empty rectangle to get access to the font face,
// we'll update it once we've calculated a bounding rect in DrawGlyphs
if (FAILED(BindDC(mhDC = hDC)))
return false;
mlfEmHeight = 0;
return GetDWriteFaceFromHDC(hDC, &mpFontFace, &mlfEmHeight);
}
bool D2DWriteTextOutRenderer::ReleaseFont()
{
mpFontFace->Release();
mpFontFace = nullptr;
mhDC = nullptr;
return true;
}
// GetGlyphInkBoxes
// The inkboxes returned have their origin on the baseline, to a -ve value
// of Top() means the glyph extends abs(Top()) many pixels above the
// baseline, and +ve means the ink starts that many pixels below.
std::vector<tools::Rectangle> D2DWriteTextOutRenderer::GetGlyphInkBoxes(uint16_t const * pGid, uint16_t const * pGidEnd) const
{
ptrdiff_t nGlyphs = pGidEnd - pGid;
if (nGlyphs < 0)
return std::vector<tools::Rectangle>();
DWRITE_FONT_METRICS aFontMetrics;
mpFontFace->GetMetrics(&aFontMetrics);
std::vector<DWRITE_GLYPH_METRICS> metrics(nGlyphs);
if (!SUCCEEDED(CHECKHR(mpFontFace->GetDesignGlyphMetrics(pGid, nGlyphs, metrics.data()))))
return std::vector<tools::Rectangle>();
std::vector<tools::Rectangle> aOut(nGlyphs);
auto pOut = aOut.begin();
for (auto &m : metrics)
{
const long left = m.leftSideBearing,
top = m.topSideBearing - m.verticalOriginY,
right = m.advanceWidth - m.rightSideBearing,
bottom = INT32(m.advanceHeight) - m.verticalOriginY - m.bottomSideBearing;
// Scale to screen space.
pOut->SetLeft( std::floor(left * mlfEmHeight / aFontMetrics.designUnitsPerEm) );
pOut->SetTop( std::floor(top * mlfEmHeight / aFontMetrics.designUnitsPerEm) );
pOut->SetRight( std::ceil(right * mlfEmHeight / aFontMetrics.designUnitsPerEm) );
pOut->SetBottom( std::ceil(bottom * mlfEmHeight / aFontMetrics.designUnitsPerEm) );
++pOut;
}
return aOut;
}
bool D2DWriteTextOutRenderer::GetDWriteFaceFromHDC(HDC hDC, IDWriteFontFace ** ppFontFace, float * lfSize) const
{
bool succeeded = SUCCEEDED(CHECKHR(mpGdiInterop->CreateFontFaceFromHdc(hDC, ppFontFace)));
if (succeeded)
{
LOGFONTW aLogFont;
HFONT hFont = static_cast<HFONT>(::GetCurrentObject(hDC, OBJ_FONT));
GetObjectW(hFont, sizeof(LOGFONTW), &aLogFont);
float dpix, dpiy;
mpRT->GetDpi(&dpix, &dpiy);
*lfSize = aLogFont.lfHeight * 96.0f / dpiy;
assert(*lfSize < 0);
*lfSize *= -1;
}
return succeeded;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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