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Diffstat (limited to 'src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp')
| -rw-r--r-- | src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp | 891 |
1 files changed, 0 insertions, 891 deletions
diff --git a/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp b/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp deleted file mode 100644 index 0fdd4615f6..0000000000 --- a/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp +++ /dev/null @@ -1,891 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QT_NO_DIRECTWRITE - -#include "qwindowsfontenginedirectwrite.h" -#include "qwindowsfontdatabase.h" -#include "qwindowscontext.h" - -#include <QtCore/QSettings> -#include <QtCore/QtEndian> -#include <QtCore/QVarLengthArray> -#include <private/qstringiterator_p.h> -#include <QtCore/private/qsystemlibrary_p.h> -#include <QtGui/private/qguiapplication_p.h> -#include <qpa/qplatformintegration.h> - -#if defined(QT_USE_DIRECTWRITE2) -# include <dwrite_2.h> -#else -# include <dwrite.h> -#endif - -#include <d2d1.h> - -QT_BEGIN_NAMESPACE - -// Convert from design units to logical pixels -#define DESIGN_TO_LOGICAL(DESIGN_UNIT_VALUE) \ - QFixed::fromReal((qreal(DESIGN_UNIT_VALUE) / qreal(m_unitsPerEm)) * fontDef.pixelSize) - -namespace { - - class GeometrySink: public IDWriteGeometrySink - { - public: - GeometrySink(QPainterPath *path) - : m_refCount(0), m_path(path) - { - Q_ASSERT(m_path != 0); - } - virtual ~GeometrySink() - { - } - - IFACEMETHOD_(void, AddBeziers)(const D2D1_BEZIER_SEGMENT *beziers, UINT bezierCount); - IFACEMETHOD_(void, AddLines)(const D2D1_POINT_2F *points, UINT pointCount); - IFACEMETHOD_(void, BeginFigure)(D2D1_POINT_2F startPoint, D2D1_FIGURE_BEGIN figureBegin); - IFACEMETHOD(Close)(); - IFACEMETHOD_(void, EndFigure)(D2D1_FIGURE_END figureEnd); - IFACEMETHOD_(void, SetFillMode)(D2D1_FILL_MODE fillMode); - IFACEMETHOD_(void, SetSegmentFlags)(D2D1_PATH_SEGMENT vertexFlags); - - IFACEMETHOD_(unsigned long, AddRef)(); - IFACEMETHOD_(unsigned long, Release)(); - IFACEMETHOD(QueryInterface)(IID const &riid, void **ppvObject); - - private: - inline static QPointF fromD2D1_POINT_2F(const D2D1_POINT_2F &inp) - { - return QPointF(inp.x, inp.y); - } - - unsigned long m_refCount; - QPointF m_startPoint; - QPainterPath *m_path; - }; - - void GeometrySink::AddBeziers(const D2D1_BEZIER_SEGMENT *beziers, - UINT bezierCount) - { - for (uint i=0; i<bezierCount; ++i) { - QPointF c1 = fromD2D1_POINT_2F(beziers[i].point1); - QPointF c2 = fromD2D1_POINT_2F(beziers[i].point2); - QPointF p2 = fromD2D1_POINT_2F(beziers[i].point3); - - m_path->cubicTo(c1, c2, p2); - } - } - - void GeometrySink::AddLines(const D2D1_POINT_2F *points, UINT pointsCount) - { - for (uint i=0; i<pointsCount; ++i) - m_path->lineTo(fromD2D1_POINT_2F(points[i])); - } - - void GeometrySink::BeginFigure(D2D1_POINT_2F startPoint, - D2D1_FIGURE_BEGIN /*figureBegin*/) - { - m_startPoint = fromD2D1_POINT_2F(startPoint); - m_path->moveTo(m_startPoint); - } - - IFACEMETHODIMP GeometrySink::Close() - { - return E_NOTIMPL; - } - - void GeometrySink::EndFigure(D2D1_FIGURE_END figureEnd) - { - if (figureEnd == D2D1_FIGURE_END_CLOSED) - m_path->closeSubpath(); - } - - void GeometrySink::SetFillMode(D2D1_FILL_MODE fillMode) - { - m_path->setFillRule(fillMode == D2D1_FILL_MODE_ALTERNATE - ? Qt::OddEvenFill - : Qt::WindingFill); - } - - void GeometrySink::SetSegmentFlags(D2D1_PATH_SEGMENT /*vertexFlags*/) - { - /* Not implemented */ - } - - IFACEMETHODIMP_(unsigned long) GeometrySink::AddRef() - { - return InterlockedIncrement(&m_refCount); - } - - IFACEMETHODIMP_(unsigned long) GeometrySink::Release() - { - unsigned long newCount = InterlockedDecrement(&m_refCount); - if (newCount == 0) - { - delete this; - return 0; - } - - return newCount; - } - - IFACEMETHODIMP GeometrySink::QueryInterface(IID const &riid, void **ppvObject) - { - if (__uuidof(IDWriteGeometrySink) == riid) { - *ppvObject = this; - } else if (__uuidof(IUnknown) == riid) { - *ppvObject = this; - } else { - *ppvObject = NULL; - return E_FAIL; - } - - AddRef(); - return S_OK; - } - -} - -/*! - \class QWindowsFontEngineDirectWrite - \brief Windows font engine using Direct Write. - \internal - \ingroup qt-lighthouse-win - - Font engine for subpixel positioned text on Windows Vista - (with platform update) and Windows 7. If selected during - configuration, the engine will be selected only when the hinting - preference of a font is set to None or Vertical hinting. The font - database uses most of the same logic but creates a direct write - font based on the LOGFONT rather than a GDI handle. - - Will probably be superseded by a common Free Type font engine in Qt 5.X. -*/ - -QWindowsFontEngineDirectWrite::QWindowsFontEngineDirectWrite(IDWriteFontFace *directWriteFontFace, - qreal pixelSize, - const QSharedPointer<QWindowsFontEngineData> &d) - : QFontEngine(DirectWrite) - , m_fontEngineData(d) - , m_directWriteFontFace(directWriteFontFace) - , m_directWriteBitmapRenderTarget(0) - , m_lineThickness(-1) - , m_unitsPerEm(-1) - , m_ascent(-1) - , m_descent(-1) - , m_xHeight(-1) - , m_lineGap(-1) -{ - qCDebug(lcQpaFonts) << __FUNCTION__ << pixelSize; - - Q_ASSERT(m_directWriteFontFace); - - m_fontEngineData->directWriteFactory->AddRef(); - m_directWriteFontFace->AddRef(); - - fontDef.pixelSize = pixelSize; - collectMetrics(); - cache_cost = (m_ascent.toInt() + m_descent.toInt()) * m_xHeight.toInt() * 2000; -} - -QWindowsFontEngineDirectWrite::~QWindowsFontEngineDirectWrite() -{ - qCDebug(lcQpaFonts) << __FUNCTION__; - - m_fontEngineData->directWriteFactory->Release(); - m_directWriteFontFace->Release(); - - if (m_directWriteBitmapRenderTarget != 0) - m_directWriteBitmapRenderTarget->Release(); - - if (!m_uniqueFamilyName.isEmpty()) { - QPlatformFontDatabase *pfdb = QGuiApplicationPrivate::platformIntegration()->fontDatabase(); - static_cast<QWindowsFontDatabase *>(pfdb)->derefUniqueFont(m_uniqueFamilyName); - } -} - -void QWindowsFontEngineDirectWrite::collectMetrics() -{ - DWRITE_FONT_METRICS metrics; - - m_directWriteFontFace->GetMetrics(&metrics); - m_unitsPerEm = metrics.designUnitsPerEm; - - m_lineThickness = DESIGN_TO_LOGICAL(metrics.underlineThickness); - m_ascent = DESIGN_TO_LOGICAL(metrics.ascent); - m_descent = DESIGN_TO_LOGICAL(metrics.descent); - m_xHeight = DESIGN_TO_LOGICAL(metrics.xHeight); - m_lineGap = DESIGN_TO_LOGICAL(metrics.lineGap); - m_underlinePosition = DESIGN_TO_LOGICAL(metrics.underlinePosition); -} - -QFixed QWindowsFontEngineDirectWrite::underlinePosition() const -{ - if (m_underlinePosition > 0) - return m_underlinePosition; - else - return QFontEngine::underlinePosition(); -} - -QFixed QWindowsFontEngineDirectWrite::lineThickness() const -{ - if (m_lineThickness > 0) - return m_lineThickness; - else - return QFontEngine::lineThickness(); -} - -bool QWindowsFontEngineDirectWrite::getSfntTableData(uint tag, uchar *buffer, uint *length) const -{ - bool ret = false; - - const void *tableData = 0; - UINT32 tableSize; - void *tableContext = 0; - BOOL exists; - HRESULT hr = m_directWriteFontFace->TryGetFontTable(qbswap<quint32>(tag), - &tableData, &tableSize, - &tableContext, &exists); - if (SUCCEEDED(hr)) { - if (exists) { - ret = true; - if (buffer && *length >= tableSize) - memcpy(buffer, tableData, tableSize); - *length = tableSize; - Q_ASSERT(int(*length) > 0); - } - m_directWriteFontFace->ReleaseFontTable(tableContext); - } else { - qErrnoWarning("%s: TryGetFontTable failed", __FUNCTION__); - } - - return ret; -} - -QFixed QWindowsFontEngineDirectWrite::emSquareSize() const -{ - if (m_unitsPerEm > 0) - return m_unitsPerEm; - else - return QFontEngine::emSquareSize(); -} - -glyph_t QWindowsFontEngineDirectWrite::glyphIndex(uint ucs4) const -{ - UINT16 glyphIndex; - - HRESULT hr = m_directWriteFontFace->GetGlyphIndicesW(&ucs4, 1, &glyphIndex); - if (FAILED(hr)) { - qErrnoWarning("%s: glyphIndex failed", __FUNCTION__); - glyphIndex = 0; - } - - return glyphIndex; -} - -bool QWindowsFontEngineDirectWrite::stringToCMap(const QChar *str, int len, QGlyphLayout *glyphs, - int *nglyphs, QFontEngine::ShaperFlags flags) const -{ - Q_ASSERT(glyphs->numGlyphs >= *nglyphs); - if (*nglyphs < len) { - *nglyphs = len; - return false; - } - - QVarLengthArray<UINT32> codePoints(len); - int actualLength = 0; - QStringIterator it(str, str + len); - while (it.hasNext()) - codePoints[actualLength++] = it.next(); - - QVarLengthArray<UINT16> glyphIndices(actualLength); - HRESULT hr = m_directWriteFontFace->GetGlyphIndicesW(codePoints.data(), actualLength, - glyphIndices.data()); - if (FAILED(hr)) { - qErrnoWarning("%s: GetGlyphIndicesW failed", __FUNCTION__); - return false; - } - - for (int i = 0; i < actualLength; ++i) - glyphs->glyphs[i] = glyphIndices.at(i); - - *nglyphs = actualLength; - glyphs->numGlyphs = actualLength; - - if (!(flags & GlyphIndicesOnly)) - recalcAdvances(glyphs, 0); - - return true; -} - -void QWindowsFontEngineDirectWrite::recalcAdvances(QGlyphLayout *glyphs, QFontEngine::ShaperFlags) const -{ - QVarLengthArray<UINT16> glyphIndices(glyphs->numGlyphs); - - // ### Caching? - for(int i=0; i<glyphs->numGlyphs; i++) - glyphIndices[i] = UINT16(glyphs->glyphs[i]); - - QVarLengthArray<DWRITE_GLYPH_METRICS> glyphMetrics(glyphIndices.size()); - HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(glyphIndices.data(), - glyphIndices.size(), - glyphMetrics.data()); - if (SUCCEEDED(hr)) { - qreal stretch = fontDef.stretch / 100.0; - for (int i = 0; i < glyphs->numGlyphs; ++i) - glyphs->advances[i] = DESIGN_TO_LOGICAL(glyphMetrics[i].advanceWidth * stretch); - if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) { - for (int i = 0; i < glyphs->numGlyphs; ++i) - glyphs->advances[i] = glyphs->advances[i].round(); - } - } else { - qErrnoWarning("%s: GetDesignGlyphMetrics failed", __FUNCTION__); - } -} - -void QWindowsFontEngineDirectWrite::addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, - QPainterPath *path, QTextItem::RenderFlags flags) -{ - QVarLengthArray<UINT16> glyphIndices(nglyphs); - QVarLengthArray<DWRITE_GLYPH_OFFSET> glyphOffsets(nglyphs); - QVarLengthArray<FLOAT> glyphAdvances(nglyphs); - - for (int i=0; i<nglyphs; ++i) { - glyphIndices[i] = glyphs[i]; - glyphOffsets[i].advanceOffset = positions[i].x.toReal(); - glyphOffsets[i].ascenderOffset = -positions[i].y.toReal(); - glyphAdvances[i] = 0.0; - } - - GeometrySink geometrySink(path); - HRESULT hr = m_directWriteFontFace->GetGlyphRunOutline( - fontDef.pixelSize, - glyphIndices.data(), - glyphAdvances.data(), - glyphOffsets.data(), - nglyphs, - false, - flags & QTextItem::RightToLeft, - &geometrySink - ); - - if (FAILED(hr)) - qErrnoWarning("%s: GetGlyphRunOutline failed", __FUNCTION__); -} - -glyph_metrics_t QWindowsFontEngineDirectWrite::boundingBox(const QGlyphLayout &glyphs) -{ - if (glyphs.numGlyphs == 0) - return glyph_metrics_t(); - - bool round = fontDef.styleStrategy & QFont::ForceIntegerMetrics; - - QFixed w = 0; - for (int i = 0; i < glyphs.numGlyphs; ++i) { - w += round ? glyphs.effectiveAdvance(i).round() : glyphs.effectiveAdvance(i); - - } - - return glyph_metrics_t(0, -m_ascent, w - lastRightBearing(glyphs), m_ascent + m_descent, w, 0); -} - -glyph_metrics_t QWindowsFontEngineDirectWrite::boundingBox(glyph_t g) -{ - UINT16 glyphIndex = g; - - DWRITE_GLYPH_METRICS glyphMetrics; - HRESULT hr = m_directWriteFontFace->GetDesignGlyphMetrics(&glyphIndex, 1, &glyphMetrics); - if (SUCCEEDED(hr)) { - QFixed advanceWidth = DESIGN_TO_LOGICAL(glyphMetrics.advanceWidth); - QFixed leftSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.leftSideBearing); - QFixed rightSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.rightSideBearing); - QFixed advanceHeight = DESIGN_TO_LOGICAL(glyphMetrics.advanceHeight); - QFixed verticalOriginY = DESIGN_TO_LOGICAL(glyphMetrics.verticalOriginY); - QFixed topSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.topSideBearing); - QFixed bottomSideBearing = DESIGN_TO_LOGICAL(glyphMetrics.bottomSideBearing); - - if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) { - advanceWidth = advanceWidth.round(); - advanceHeight = advanceHeight.round(); - } - - QFixed width = advanceWidth - leftSideBearing - rightSideBearing; - QFixed height = advanceHeight - topSideBearing - bottomSideBearing; - return glyph_metrics_t(leftSideBearing, - -verticalOriginY + topSideBearing, - width, - height, - advanceWidth, - 0); - } else { - qErrnoWarning("%s: GetDesignGlyphMetrics failed", __FUNCTION__); - } - - return glyph_metrics_t(); -} - -QFixed QWindowsFontEngineDirectWrite::ascent() const -{ - return fontDef.styleStrategy & QFont::ForceIntegerMetrics - ? m_ascent.round() - : m_ascent; -} - -QFixed QWindowsFontEngineDirectWrite::descent() const -{ - return fontDef.styleStrategy & QFont::ForceIntegerMetrics - ? m_descent.round() - : m_descent; -} - -QFixed QWindowsFontEngineDirectWrite::leading() const -{ - return fontDef.styleStrategy & QFont::ForceIntegerMetrics - ? m_lineGap.round() - : m_lineGap; -} - -QFixed QWindowsFontEngineDirectWrite::xHeight() const -{ - return fontDef.styleStrategy & QFont::ForceIntegerMetrics - ? m_xHeight.round() - : m_xHeight; -} - -qreal QWindowsFontEngineDirectWrite::maxCharWidth() const -{ - // ### - return 0; -} - -QImage QWindowsFontEngineDirectWrite::alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition, const QTransform &t) -{ - QImage im = alphaRGBMapForGlyph(glyph, subPixelPosition, t); - - QImage alphaMap(im.width(), im.height(), QImage::Format_Alpha8); - - for (int y=0; y<im.height(); ++y) { - const uint *src = reinterpret_cast<const uint *>(im.constScanLine(y)); - uchar *dst = alphaMap.scanLine(y); - for (int x=0; x<im.width(); ++x) { - *dst = 255 - (m_fontEngineData->pow_gamma[qGray(0xffffffff - *src)] * 255. / 2047.); - ++dst; - ++src; - } - } - - return alphaMap; -} - -QImage QWindowsFontEngineDirectWrite::alphaMapForGlyph(glyph_t glyph, QFixed subPixelPosition) -{ - return alphaMapForGlyph(glyph, subPixelPosition, QTransform()); -} - -bool QWindowsFontEngineDirectWrite::supportsSubPixelPositions() const -{ - return true; -} - -QImage QWindowsFontEngineDirectWrite::imageForGlyph(glyph_t t, - QFixed subPixelPosition, - int margin, - const QTransform &originalTransform) -{ - UINT16 glyphIndex = t; - FLOAT glyphAdvance = 0; - - DWRITE_GLYPH_OFFSET glyphOffset; - glyphOffset.advanceOffset = 0; - glyphOffset.ascenderOffset = 0; - - DWRITE_GLYPH_RUN glyphRun; - glyphRun.fontFace = m_directWriteFontFace; - glyphRun.fontEmSize = fontDef.pixelSize; - glyphRun.glyphCount = 1; - glyphRun.glyphIndices = &glyphIndex; - glyphRun.glyphAdvances = &glyphAdvance; - glyphRun.isSideways = false; - glyphRun.bidiLevel = 0; - glyphRun.glyphOffsets = &glyphOffset; - - QTransform xform = originalTransform; - if (fontDef.stretch != 100) - xform.scale(fontDef.stretch / 100.0, 1.0); - - DWRITE_MATRIX transform; - transform.dx = subPixelPosition.toReal(); - transform.dy = 0; - transform.m11 = xform.m11(); - transform.m12 = xform.m12(); - transform.m21 = xform.m21(); - transform.m22 = xform.m22(); - - DWRITE_RENDERING_MODE renderMode = - fontDef.hintingPreference == QFont::PreferNoHinting - ? DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC - : DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL; - - IDWriteGlyphRunAnalysis *glyphAnalysis = NULL; - HRESULT hr = m_fontEngineData->directWriteFactory->CreateGlyphRunAnalysis( - &glyphRun, - 1.0f, - &transform, - renderMode, - DWRITE_MEASURING_MODE_NATURAL, - 0.0, 0.0, - &glyphAnalysis - ); - - if (SUCCEEDED(hr)) { - RECT rect; - glyphAnalysis->GetAlphaTextureBounds(DWRITE_TEXTURE_CLEARTYPE_3x1, &rect); - - QRect boundingRect = QRect(QPoint(rect.left - margin, - rect.top - margin), - QPoint(rect.right + margin, - rect.bottom + margin)); - - - const int width = boundingRect.width() - 1; // -1 due to Qt's off-by-one definition of a QRect - const int height = boundingRect.height() - 1; - - QImage image; -#if defined(QT_USE_DIRECTWRITE2) - HRESULT hr = DWRITE_E_NOCOLOR; - IDWriteColorGlyphRunEnumerator *enumerator = 0; - IDWriteFactory2 *factory2 = Q_NULLPTR; - if (glyphFormat == QFontEngine::Format_ARGB - && SUCCEEDED(m_fontEngineData->directWriteFactory->QueryInterface(__uuidof(IDWriteFactory2), - reinterpret_cast<void **>(&factory2)))) { - hr = factory2->TranslateColorGlyphRun(0.0f, - 0.0f, - &glyphRun, - NULL, - DWRITE_MEASURING_MODE_NATURAL, - NULL, - 0, - &enumerator); - image = QImage(width, height, QImage::Format_ARGB32_Premultiplied); - image.fill(0); - } else -#endif - { - image = QImage(width, height, QImage::Format_RGB32); - image.fill(0xffffffff); - } - -#if defined(QT_USE_DIRECTWRITE2) - BOOL ok = true; - if (SUCCEEDED(hr)) { - while (SUCCEEDED(hr) && ok) { - const DWRITE_COLOR_GLYPH_RUN *colorGlyphRun = 0; - hr = enumerator->GetCurrentRun(&colorGlyphRun); - if (FAILED(hr)) { // No colored runs, only outline - qErrnoWarning(hr, "%s: IDWriteColorGlyphRunEnumerator::GetCurrentRun failed", __FUNCTION__); - break; - } - - IDWriteGlyphRunAnalysis *colorGlyphsAnalysis = NULL; - hr = m_fontEngineData->directWriteFactory->CreateGlyphRunAnalysis( - &colorGlyphRun->glyphRun, - 1.0f, - &transform, - renderMode, - DWRITE_MEASURING_MODE_NATURAL, - 0.0, 0.0, - &colorGlyphsAnalysis - ); - if (FAILED(hr)) { - qErrnoWarning(hr, "%s: CreateGlyphRunAnalysis failed for color run", __FUNCTION__); - break; - } - - float r = qBound(0.0f, colorGlyphRun->runColor.r, 1.0f); - float g = qBound(0.0f, colorGlyphRun->runColor.g, 1.0f); - float b = qBound(0.0f, colorGlyphRun->runColor.b, 1.0f); - float a = qBound(0.0f, colorGlyphRun->runColor.a, 1.0f); - - if (!qFuzzyIsNull(a)) { - renderGlyphRun(&image, - r, - g, - b, - a, - colorGlyphsAnalysis, - boundingRect); - } - colorGlyphsAnalysis->Release(); - - hr = enumerator->MoveNext(&ok); - if (FAILED(hr)) { - qErrnoWarning(hr, "%s: IDWriteColorGlyphRunEnumerator::MoveNext failed", __FUNCTION__); - break; - } - } - } else -#endif - { - renderGlyphRun(&image, - 0.0, - 0.0, - 0.0, - 1.0, - glyphAnalysis, - boundingRect); - } - - glyphAnalysis->Release(); - return image; - } else { - qErrnoWarning(hr, "%s: CreateGlyphRunAnalysis failed", __FUNCTION__); - return QImage(); - } -} - - -void QWindowsFontEngineDirectWrite::renderGlyphRun(QImage *destination, - float r, - float g, - float b, - float a, - IDWriteGlyphRunAnalysis *glyphAnalysis, - const QRect &boundingRect) -{ - const int width = destination->width(); - const int height = destination->height(); - - r *= 255.0; - g *= 255.0; - b *= 255.0; - - const int size = width * height * 3; - if (size > 0) { - RECT rect; - rect.left = boundingRect.left(); - rect.top = boundingRect.top(); - rect.right = boundingRect.right(); - rect.bottom = boundingRect.bottom(); - - QVarLengthArray<BYTE, 1024> alphaValueArray(size); - BYTE *alphaValues = alphaValueArray.data(); - memset(alphaValues, 0, size); - - HRESULT hr = glyphAnalysis->CreateAlphaTexture(DWRITE_TEXTURE_CLEARTYPE_3x1, - &rect, - alphaValues, - size); - if (SUCCEEDED(hr)) { - if (destination->hasAlphaChannel()) { - for (int y = 0; y < height; ++y) { - uint *dest = reinterpret_cast<uint *>(destination->scanLine(y)); - BYTE *src = alphaValues + width * 3 * y; - - for (int x = 0; x < width; ++x) { - float redAlpha = a * *src++ / 255.0; - float greenAlpha = a * *src++ / 255.0; - float blueAlpha = a * *src++ / 255.0; - float averageAlpha = (redAlpha + greenAlpha + blueAlpha) / 3.0; - - QRgb currentRgb = dest[x]; - dest[x] = qRgba(qRound(qRed(currentRgb) * (1.0 - averageAlpha) + averageAlpha * r), - qRound(qGreen(currentRgb) * (1.0 - averageAlpha) + averageAlpha * g), - qRound(qBlue(currentRgb) * (1.0 - averageAlpha) + averageAlpha * b), - qRound(qAlpha(currentRgb) * (1.0 - averageAlpha) + averageAlpha * 255)); - } - } - - } else { - for (int y = 0; y < height; ++y) { - uint *dest = reinterpret_cast<uint *>(destination->scanLine(y)); - BYTE *src = alphaValues + width * 3 * y; - - for (int x = 0; x < width; ++x) { - dest[x] = *(src + 0) << 16 - | *(src + 1) << 8 - | *(src + 2); - - src += 3; - } - } - } - } else { - qErrnoWarning("%s: CreateAlphaTexture failed", __FUNCTION__); - } - } else { - glyphAnalysis->Release(); - qWarning("%s: Glyph has no bounds", __FUNCTION__); - } -} - -QImage QWindowsFontEngineDirectWrite::alphaRGBMapForGlyph(glyph_t t, - QFixed subPixelPosition, - const QTransform &xform) -{ - QImage mask = imageForGlyph(t, - subPixelPosition, - glyphMargin(QFontEngine::Format_A32), - xform); - - return mask.depth() == 32 - ? mask - : mask.convertToFormat(QImage::Format_RGB32); -} - -QFontEngine *QWindowsFontEngineDirectWrite::cloneWithSize(qreal pixelSize) const -{ - QWindowsFontEngineDirectWrite *fontEngine = new QWindowsFontEngineDirectWrite(m_directWriteFontFace, - pixelSize, - m_fontEngineData); - - fontEngine->fontDef = fontDef; - fontEngine->fontDef.pixelSize = pixelSize; - if (!m_uniqueFamilyName.isEmpty()) { - fontEngine->setUniqueFamilyName(m_uniqueFamilyName); - QPlatformFontDatabase *pfdb = QGuiApplicationPrivate::platformIntegration()->fontDatabase(); - static_cast<QWindowsFontDatabase *>(pfdb)->refUniqueFont(m_uniqueFamilyName); - } - - return fontEngine; -} - -Qt::HANDLE QWindowsFontEngineDirectWrite::handle() const -{ - return m_directWriteFontFace; -} - -void QWindowsFontEngineDirectWrite::initFontInfo(const QFontDef &request, - int dpi) -{ - fontDef = request; - - if (fontDef.pointSize < 0) - fontDef.pointSize = fontDef.pixelSize * 72. / dpi; - else if (fontDef.pixelSize == -1) - fontDef.pixelSize = qRound(fontDef.pointSize * dpi / 72.); -} - -QString QWindowsFontEngineDirectWrite::fontNameSubstitute(const QString &familyName) -{ - static const char keyC[] = "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows NT\\CurrentVersion\\" - "FontSubstitutes"; - return QSettings(QLatin1String(keyC), QSettings::NativeFormat).value(familyName, familyName).toString(); -} - -glyph_metrics_t QWindowsFontEngineDirectWrite::alphaMapBoundingBox(glyph_t glyph, - QFixed subPixelPosition, - const QTransform &originalTransform, - GlyphFormat format) -{ - Q_UNUSED(format); - - QTransform matrix = originalTransform; - if (fontDef.stretch != 100) - matrix.scale(fontDef.stretch / 100.0, 1.0); - - glyph_metrics_t bbox = QFontEngine::boundingBox(glyph, matrix); // To get transformed advance - - UINT16 glyphIndex = glyph; - FLOAT glyphAdvance = 0; - - DWRITE_GLYPH_OFFSET glyphOffset; - glyphOffset.advanceOffset = 0; - glyphOffset.ascenderOffset = 0; - - DWRITE_GLYPH_RUN glyphRun; - glyphRun.fontFace = m_directWriteFontFace; - glyphRun.fontEmSize = fontDef.pixelSize; - glyphRun.glyphCount = 1; - glyphRun.glyphIndices = &glyphIndex; - glyphRun.glyphAdvances = &glyphAdvance; - glyphRun.isSideways = false; - glyphRun.bidiLevel = 0; - glyphRun.glyphOffsets = &glyphOffset; - - DWRITE_MATRIX transform; - transform.dx = subPixelPosition.toReal(); - transform.dy = 0; - transform.m11 = matrix.m11(); - transform.m12 = matrix.m12(); - transform.m21 = matrix.m21(); - transform.m22 = matrix.m22(); - - DWRITE_RENDERING_MODE renderMode = - fontDef.hintingPreference == QFont::PreferNoHinting - ? DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL_SYMMETRIC - : DWRITE_RENDERING_MODE_CLEARTYPE_NATURAL; - - IDWriteGlyphRunAnalysis *glyphAnalysis = NULL; - HRESULT hr = m_fontEngineData->directWriteFactory->CreateGlyphRunAnalysis( - &glyphRun, - 1.0f, - &transform, - renderMode, - DWRITE_MEASURING_MODE_NATURAL, - 0.0, 0.0, - &glyphAnalysis - ); - - if (SUCCEEDED(hr)) { - RECT rect; - glyphAnalysis->GetAlphaTextureBounds(DWRITE_TEXTURE_CLEARTYPE_3x1, &rect); - glyphAnalysis->Release(); - - int margin = glyphMargin(QFontEngine::Format_A32); - - return glyph_metrics_t(rect.left, - rect.top, - rect.right - rect.left + margin * 2, - rect.bottom - rect.top + margin * 2, - bbox.xoff, bbox.yoff); - } else { - return glyph_metrics_t(); - } -} - -QImage QWindowsFontEngineDirectWrite::bitmapForGlyph(glyph_t glyph, QFixed subPixelPosition, const QTransform &t) -{ - return imageForGlyph(glyph, subPixelPosition, glyphMargin(QFontEngine::Format_A32), t); -} - -QT_END_NAMESPACE - -#endif // QT_NO_DIRECTWRITE |