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Diffstat (limited to 'src/gui/text/qfontengine_s60.cpp')
| -rw-r--r-- | src/gui/text/qfontengine_s60.cpp | 569 |
1 files changed, 0 insertions, 569 deletions
diff --git a/src/gui/text/qfontengine_s60.cpp b/src/gui/text/qfontengine_s60.cpp deleted file mode 100644 index 2bcee0157c..0000000000 --- a/src/gui/text/qfontengine_s60.cpp +++ /dev/null @@ -1,569 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qfontengine_s60_p.h" -#include "qtextengine_p.h" -#include "qendian.h" -#include "qglobal.h" -#include <private/qapplication_p.h> -#include "qimage.h" -#include <private/qt_s60_p.h> -#include <private/qpixmap_s60_p.h> - -#include <e32base.h> -#include <e32std.h> -#include <eikenv.h> -#include <gdi.h> -#if defined(Q_SYMBIAN_HAS_GLYPHOUTLINE_API) -#include <graphics/gdi/gdiplatapi.h> -#endif // Q_SYMBIAN_HAS_GLYPHOUTLINE_API - -// Replication of TGetFontTableParam & friends. -// There is unfortunately no compile time flag like SYMBIAN_FONT_TABLE_API -// that would help us to only replicate these things for Symbian versions -// that do not yet have the font table Api. Symbian's public SDK does -// generally not define any usable macros. -class QSymbianTGetFontTableParam -{ -public: - TUint32 iTag; - TAny *iContent; - TInt iLength; -}; -const TUid QSymbianKFontGetFontTable = {0x102872C1}; -const TUid QSymbianKFontReleaseFontTable = {0x2002AC24}; - -QT_BEGIN_NAMESPACE - -QSymbianTypeFaceExtras::QSymbianTypeFaceExtras(CFont* cFont, COpenFont *openFont) - : m_cFont(cFont) - , m_symbolCMap(false) - , m_openFont(openFont) -{ - if (!symbianFontTableApiAvailable()) { - TAny *trueTypeExtension = NULL; - m_openFont->ExtendedInterface(KUidOpenFontTrueTypeExtension, trueTypeExtension); - m_trueTypeExtension = static_cast<MOpenFontTrueTypeExtension*>(trueTypeExtension); - Q_ASSERT(m_trueTypeExtension); - } -} - -QSymbianTypeFaceExtras::~QSymbianTypeFaceExtras() -{ - if (symbianFontTableApiAvailable()) - S60->screenDevice()->ReleaseFont(m_cFont); -} - -QByteArray QSymbianTypeFaceExtras::getSfntTable(uint tag) const -{ - if (symbianFontTableApiAvailable()) { - QSymbianTGetFontTableParam fontTableParams = { tag, 0, 0 }; - if (m_cFont->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { - const char* const fontTableContent = - static_cast<const char *>(fontTableParams.iContent); - const QByteArray fontTable(fontTableContent, fontTableParams.iLength); - m_cFont->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); - return fontTable; - } - return QByteArray(); - } else { - Q_ASSERT(m_trueTypeExtension->HasTrueTypeTable(tag)); - TInt error = KErrNone; - TInt tableByteLength = 0; - TAny *table = m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength); - Q_CHECK_PTR(table); - const QByteArray result(static_cast<const char*>(table), tableByteLength); - m_trueTypeExtension->ReleaseTrueTypeTable(table); - return result; - } -} - -bool QSymbianTypeFaceExtras::getSfntTableData(uint tag, uchar *buffer, uint *length) const -{ - bool result = true; - if (symbianFontTableApiAvailable()) { - QSymbianTGetFontTableParam fontTableParams = { tag, 0, 0 }; - if (m_cFont->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { - if (*length > 0 && *length < fontTableParams.iLength) { - result = false; // Caller did not allocate enough memory - } else { - *length = fontTableParams.iLength; - if (buffer) - memcpy(buffer, fontTableParams.iContent, fontTableParams.iLength); - } - m_cFont->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); - } else { - result = false; - } - } else { - if (!m_trueTypeExtension->HasTrueTypeTable(tag)) - return false; - - TInt error = KErrNone; - TInt tableByteLength; - TAny *table = m_trueTypeExtension->GetTrueTypeTable(error, tag, &tableByteLength); - Q_CHECK_PTR(table); - - if (error != KErrNone) { - return false; - } else if (*length > 0 && *length < tableByteLength) { - result = false; // Caller did not allocate enough memory - } else { - *length = tableByteLength; - if (buffer) - memcpy(buffer, table, tableByteLength); - } - - m_trueTypeExtension->ReleaseTrueTypeTable(table); - } - return result; -} - -const uchar *QSymbianTypeFaceExtras::cmap() const -{ - if (m_cmapTable.isNull()) { - const QByteArray cmapTable = getSfntTable(MAKE_TAG('c', 'm', 'a', 'p')); - int size = 0; - const uchar *cmap = QFontEngine::getCMap(reinterpret_cast<const uchar *> - (cmapTable.constData()), cmapTable.size(), &m_symbolCMap, &size); - m_cmapTable = QByteArray(reinterpret_cast<const char *>(cmap), size); - } - return reinterpret_cast<const uchar *>(m_cmapTable.constData()); -} - -bool QSymbianTypeFaceExtras::isSymbolCMap() const -{ - return m_symbolCMap; -} - -CFont *QSymbianTypeFaceExtras::fontOwner() const -{ - return m_cFont; -} - -QFixed QSymbianTypeFaceExtras::unitsPerEm() const -{ - if (m_unitsPerEm.value() != 0) - return m_unitsPerEm; - const QByteArray head = getSfntTable(MAKE_TAG('h', 'e', 'a', 'd')); - const int unitsPerEmOffset = 18; - if (head.size() > unitsPerEmOffset + sizeof(quint16)) { - const uchar* tableData = reinterpret_cast<const uchar*>(head.constData()); - const uchar* unitsPerEm = tableData + unitsPerEmOffset; - m_unitsPerEm = qFromBigEndian<quint16>(unitsPerEm); - } else { - // Bitmap font? Corrupt font? - // We return -1 and let the QFontEngineS60 return the pixel size. - m_unitsPerEm = -1; - } - return m_unitsPerEm; -} - -bool QSymbianTypeFaceExtras::symbianFontTableApiAvailable() -{ - enum FontTableApiAvailability { - Unknown, - Available, - Unavailable - }; - static FontTableApiAvailability availability = - QSysInfo::symbianVersion() < QSysInfo::SV_SF_3 ? - Unavailable : Unknown; - if (availability == Unknown) { - // Actually, we should ask CFeatureDiscovery::IsFeatureSupportedL() - // with FfFontTable here. But since at the time of writing, the - // FfFontTable flag check either gave false positives or false - // negatives. Here comes an implicit check via CFont::ExtendedFunction. - QSymbianTGetFontTableParam fontTableParams = { - MAKE_TAG('O', 'S', '/', '2'), 0, 0 }; - QSymbianFbsHeapLock lock(QSymbianFbsHeapLock::Unlock); - CFont *font; - const TInt getFontErr = S60->screenDevice()->GetNearestFontInTwips(font, TFontSpec()); - Q_ASSERT(getFontErr == KErrNone); - if (font->ExtendedFunction(QSymbianKFontGetFontTable, &fontTableParams) == KErrNone) { - font->ExtendedFunction(QSymbianKFontReleaseFontTable, &fontTableParams); - availability = Available; - } else { - availability = Unavailable; - } - S60->screenDevice()->ReleaseFont(font); - lock.relock(); - } - return availability == Available; -} - -// duplicated from qfontengine_xyz.cpp -static inline unsigned int getChar(const QChar *str, int &i, const int len) -{ - unsigned int uc = str[i].unicode(); - if (uc >= 0xd800 && uc < 0xdc00 && i < len-1) { - uint low = str[i+1].unicode(); - if (low >= 0xdc00 && low < 0xe000) { - uc = (uc - 0xd800)*0x400 + (low - 0xdc00) + 0x10000; - ++i; - } - } - return uc; -} - -extern QString qt_symbian_fontNameWithAppFontMarker(const QString &fontName); // qfontdatabase_s60.cpp - -CFont *QFontEngineS60::fontWithSize(qreal size) const -{ - CFont *result = 0; - const QString family = qt_symbian_fontNameWithAppFontMarker(QFontEngine::fontDef.family); - TFontSpec fontSpec(qt_QString2TPtrC(family), TInt(size)); - fontSpec.iFontStyle.SetBitmapType(EAntiAliasedGlyphBitmap); - fontSpec.iFontStyle.SetPosture(QFontEngine::fontDef.style == QFont::StyleNormal?EPostureUpright:EPostureItalic); - fontSpec.iFontStyle.SetStrokeWeight(QFontEngine::fontDef.weight > QFont::Normal?EStrokeWeightBold:EStrokeWeightNormal); - const TInt errorCode = S60->screenDevice()->GetNearestFontToDesignHeightInPixels(result, fontSpec); - Q_ASSERT(result && (errorCode == 0)); - return result; -} - -void QFontEngineS60::setFontScale(qreal scale) -{ - if (qFuzzyCompare(scale, qreal(1))) { - if (!m_originalFont) - m_originalFont = fontWithSize(m_originalFontSizeInPixels); - m_activeFont = m_originalFont; - } else { - const qreal scaledFontSizeInPixels = m_originalFontSizeInPixels * scale; - if (!m_scaledFont || - (TInt(scaledFontSizeInPixels) != TInt(m_scaledFontSizeInPixels))) { - releaseFont(m_scaledFont); - m_scaledFontSizeInPixels = scaledFontSizeInPixels; - m_scaledFont = fontWithSize(m_scaledFontSizeInPixels); - } - m_activeFont = m_scaledFont; - } -} - -void QFontEngineS60::releaseFont(CFont *&font) -{ - if (font) { - S60->screenDevice()->ReleaseFont(font); - font = 0; - } -} - -QFontEngineS60::QFontEngineS60(const QFontDef &request, const QSymbianTypeFaceExtras *extras) - : m_extras(extras) - , m_originalFont(0) - , m_originalFontSizeInPixels((request.pixelSize >= 0)? - request.pixelSize:pointsToPixels(request.pointSize)) - , m_scaledFont(0) - , m_scaledFontSizeInPixels(0) - , m_activeFont(0) -{ - QFontEngine::fontDef = request; - setFontScale(1.0); - cache_cost = sizeof(QFontEngineS60); -} - -QFontEngineS60::~QFontEngineS60() -{ - releaseFont(m_originalFont); - releaseFont(m_scaledFont); -} - -QFixed QFontEngineS60::emSquareSize() const -{ - const QFixed unitsPerEm = m_extras->unitsPerEm(); - return unitsPerEm.toInt() == -1 ? - QFixed::fromReal(m_originalFontSizeInPixels) : unitsPerEm; -} - -bool QFontEngineS60::stringToCMap(const QChar *characters, int len, QGlyphLayout *glyphs, int *nglyphs, QTextEngine::ShaperFlags flags) const -{ - if (*nglyphs < len) { - *nglyphs = len; - return false; - } - - HB_Glyph *g = glyphs->glyphs; - const unsigned char* cmap = m_extras->cmap(); - const bool isRtl = (flags & QTextEngine::RightToLeft); - for (int i = 0; i < len; ++i) { - const unsigned int uc = getChar(characters, i, len); - *g++ = QFontEngine::getTrueTypeGlyphIndex(cmap, - (isRtl && !m_extras->isSymbolCMap()) ? QChar::mirroredChar(uc) : uc); - } - - glyphs->numGlyphs = g - glyphs->glyphs; - *nglyphs = glyphs->numGlyphs; - - if (flags & QTextEngine::GlyphIndicesOnly) - return true; - - recalcAdvances(glyphs, flags); - return true; -} - -void QFontEngineS60::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFlags flags) const -{ - Q_UNUSED(flags); - TOpenFontCharMetrics metrics; - const TUint8 *glyphBitmapBytes; - TSize glyphBitmapSize; - for (int i = 0; i < glyphs->numGlyphs; i++) { - getCharacterData(glyphs->glyphs[i], metrics, glyphBitmapBytes, glyphBitmapSize); - glyphs->advances_x[i] = metrics.HorizAdvance(); - glyphs->advances_y[i] = 0; - } -} - -#ifdef Q_SYMBIAN_HAS_GLYPHOUTLINE_API -static bool parseGlyphPathData(const char *dataStr, const char *dataEnd, QPainterPath &path, - qreal fontPixelSize, const QPointF &offset, bool hinted); -#endif //Q_SYMBIAN_HAS_GLYPHOUTLINE_API - -void QFontEngineS60::addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, - int nglyphs, QPainterPath *path, - QTextItem::RenderFlags flags) -{ -#ifdef Q_SYMBIAN_HAS_GLYPHOUTLINE_API - Q_UNUSED(flags) - RGlyphOutlineIterator iterator; - const TInt error = iterator.Open(*m_activeFont, glyphs, nglyphs); - if (KErrNone != error) - return; - const qreal fontSizeInPixels = qreal(m_activeFont->HeightInPixels()); - int count = 0; - do { - const TUint8* outlineUint8 = iterator.Outline(); - const char* const outlineChar = reinterpret_cast<const char*>(outlineUint8); - const char* const outlineEnd = outlineChar + iterator.OutlineLength(); - parseGlyphPathData(outlineChar, outlineEnd, *path, fontSizeInPixels, - positions[count++].toPointF(), false); - } while(KErrNone == iterator.Next() && count <= nglyphs); - iterator.Close(); -#else // Q_SYMBIAN_HAS_GLYPHOUTLINE_API - QFontEngine::addGlyphsToPath(glyphs, positions, nglyphs, path, flags); -#endif //Q_SYMBIAN_HAS_GLYPHOUTLINE_API -} - -QImage QFontEngineS60::alphaMapForGlyph(glyph_t glyph) -{ - // Note: On some Symbian versions (apparently <= Symbian^1), this - // function will return gray values 0x00, 0x10 ... 0xe0, 0xf0 due - // to a bug. The glyphs are nowhere perfectly opaque. - // This has been fixed for Symbian^3. - - TOpenFontCharMetrics metrics; - const TUint8 *glyphBitmapBytes; - TSize glyphBitmapSize; - getCharacterData(glyph, metrics, glyphBitmapBytes, glyphBitmapSize); - QImage result(glyphBitmapBytes, glyphBitmapSize.iWidth, glyphBitmapSize.iHeight, glyphBitmapSize.iWidth, QImage::Format_Indexed8); - result.setColorTable(grayPalette()); - return result; -} - -glyph_metrics_t QFontEngineS60::boundingBox(const QGlyphLayout &glyphs) -{ - if (glyphs.numGlyphs == 0) - return glyph_metrics_t(); - - QFixed w = 0; - for (int i = 0; i < glyphs.numGlyphs; ++i) - w += glyphs.effectiveAdvance(i); - - return glyph_metrics_t(0, -ascent(), w - lastRightBearing(glyphs), ascent()+descent()+1, w, 0); -} - -glyph_metrics_t QFontEngineS60::boundingBox_const(glyph_t glyph) const -{ - TOpenFontCharMetrics metrics; - const TUint8 *glyphBitmapBytes; - TSize glyphBitmapSize; - getCharacterData(glyph, metrics, glyphBitmapBytes, glyphBitmapSize); - const glyph_metrics_t result( - metrics.HorizBearingX(), - -metrics.HorizBearingY(), - metrics.Width(), - metrics.Height(), - metrics.HorizAdvance(), - 0 - ); - return result; -} - -glyph_metrics_t QFontEngineS60::boundingBox(glyph_t glyph) -{ - return boundingBox_const(glyph); -} - -QFixed QFontEngineS60::ascent() const -{ - // Workaround for QTBUG-8013 - // Stroke based fonts may return an incorrect FontMaxAscent of 0. - const QFixed ascent = m_originalFont->FontMaxAscent(); - return (ascent > 0) ? ascent : QFixed::fromReal(m_originalFontSizeInPixels) - descent(); -} - -QFixed QFontEngineS60::descent() const -{ - return m_originalFont->FontMaxDescent(); -} - -QFixed QFontEngineS60::leading() const -{ - return 0; -} - -qreal QFontEngineS60::maxCharWidth() const -{ - return m_originalFont->MaxCharWidthInPixels(); -} - -const char *QFontEngineS60::name() const -{ - return "QFontEngineS60"; -} - -bool QFontEngineS60::canRender(const QChar *string, int len) -{ - const unsigned char *cmap = m_extras->cmap(); - for (int i = 0; i < len; ++i) { - const unsigned int uc = getChar(string, i, len); - if (QFontEngine::getTrueTypeGlyphIndex(cmap, uc) == 0) - return false; - } - return true; -} - -QByteArray QFontEngineS60::getSfntTable(uint tag) const -{ - return m_extras->getSfntTable(tag); -} - -bool QFontEngineS60::getSfntTableData(uint tag, uchar *buffer, uint *length) const -{ - return m_extras->getSfntTableData(tag, buffer, length); -} - -QFontEngine::Type QFontEngineS60::type() const -{ - return QFontEngine::S60FontEngine; -} - -void QFontEngineS60::getCharacterData(glyph_t glyph, TOpenFontCharMetrics& metrics, const TUint8*& bitmap, TSize& bitmapSize) const -{ - // Setting the most significant bit tells GetCharacterData - // that 'code' is a Glyph ID, rather than a UTF-16 value - const TUint specialCode = (TUint)glyph | 0x80000000; - - const CFont::TCharacterDataAvailability availability = - m_activeFont->GetCharacterData(specialCode, metrics, bitmap, bitmapSize); - const glyph_t fallbackGlyph = '?'; - if (availability != CFont::EAllCharacterData) { - const CFont::TCharacterDataAvailability fallbackAvailability = - m_activeFont->GetCharacterData(fallbackGlyph, metrics, bitmap, bitmapSize); - Q_ASSERT(fallbackAvailability == CFont::EAllCharacterData); - } -} - -#ifdef Q_SYMBIAN_HAS_GLYPHOUTLINE_API -static inline void skipSpacesAndComma(const char* &str, const char* const strEnd) -{ - while (str <= strEnd && (*str == ' ' || *str == ',')) - ++str; -} - -static bool parseGlyphPathData(const char *svgPath, const char *svgPathEnd, QPainterPath &path, - qreal fontPixelSize, const QPointF &offset, bool hinted) -{ - Q_UNUSED(hinted) - QPointF p1, p2, firstSubPathPoint; - qreal *elementValues[] = - {&p1.rx(), &p1.ry(), &p2.rx(), &p2.ry()}; - const int unitsPerEm = 2048; // See: http://en.wikipedia.org/wiki/Em_%28typography%29 - const qreal resizeFactor = fontPixelSize / unitsPerEm; - - while (svgPath < svgPathEnd) { - skipSpacesAndComma(svgPath, svgPathEnd); - const char pathElem = *svgPath++; - skipSpacesAndComma(svgPath, svgPathEnd); - - if (pathElem != 'Z') { - char *endStr = 0; - int elementValuesCount = 0; - for (int i = 0; i < 4; ++i) { // 4 = size of elementValues[] - qreal coordinateValue = strtod(svgPath, &endStr); - if (svgPath == endStr) - break; - if (i % 2) // Flip vertically - coordinateValue = -coordinateValue; - *elementValues[i] = coordinateValue * resizeFactor; - elementValuesCount++; - svgPath = endStr; - skipSpacesAndComma(svgPath, svgPathEnd); - } - p1 += offset; - if (elementValuesCount == 2) - p2 = firstSubPathPoint; - else - p2 += offset; - } - - switch (pathElem) { - case 'M': - firstSubPathPoint = p1; - path.moveTo(p1); - break; - case 'Z': - path.closeSubpath(); - break; - case 'L': - path.lineTo(p1); - break; - case 'Q': - path.quadTo(p1, p2); - break; - default: - return false; - } - } - return true; -} -#endif // Q_SYMBIAN_HAS_GLYPHOUTLINE_API - -QT_END_NAMESPACE |