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Diffstat (limited to 'src/plugins/platforms/windows/qwindowsfontengine.cpp')
-rw-r--r-- | src/plugins/platforms/windows/qwindowsfontengine.cpp | 1328 |
1 files changed, 0 insertions, 1328 deletions
diff --git a/src/plugins/platforms/windows/qwindowsfontengine.cpp b/src/plugins/platforms/windows/qwindowsfontengine.cpp deleted file mode 100644 index f5d1ed9fad..0000000000 --- a/src/plugins/platforms/windows/qwindowsfontengine.cpp +++ /dev/null @@ -1,1328 +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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qwindowsintegration.h" -#include "qwindowsfontengine.h" -#include "qwindowsnativeimage.h" -#include "qwindowscontext.h" -#include "qwindowsfontdatabase.h" -#include <QtCore/qt_windows.h> -#include "qwindowsfontenginedirectwrite.h" - -#include <QtGui/private/qtextengine_p.h> // glyph_metrics_t -#include <QtGui/private/qguiapplication_p.h> -#include <QtGui/QPaintDevice> -#include <QtGui/QBitmap> -#include <QtGui/QPainter> -#include <QtGui/private/qpainter_p.h> -#include <QtGui/QPaintEngine> -#include <QtGui/private/qpaintengine_raster_p.h> - -#include <QtCore/QtEndian> -#include <QtCore/QFile> -#include <QtCore/qmath.h> -#include <QtCore/QThreadStorage> -#include <QtCore/private/qsystemlibrary_p.h> -#include <QtCore/private/qstringiterator_p.h> - -#include <QtCore/QDebug> - -#include <limits.h> - -#if !defined(QT_NO_DIRECTWRITE) -# include <dwrite.h> -#endif - -QT_BEGIN_NAMESPACE - -//### mingw needed define -#ifndef TT_PRIM_CSPLINE -#define TT_PRIM_CSPLINE 3 -#endif - -// GetFontData expects the tags in little endian ;( -#define MAKE_LITTLE_ENDIAN_TAG(ch1, ch2, ch3, ch4) (\ - (((quint32)(ch4)) << 24) | \ - (((quint32)(ch3)) << 16) | \ - (((quint32)(ch2)) << 8) | \ - ((quint32)(ch1)) \ - ) - -// common DC for all fonts - -typedef BOOL (WINAPI *PtrGetCharWidthI)(HDC, UINT, UINT, LPWORD, LPINT); -static PtrGetCharWidthI ptrGetCharWidthI = 0; -static bool resolvedGetCharWidthI = false; - -static void resolveGetCharWidthI() -{ - if (resolvedGetCharWidthI) - return; - resolvedGetCharWidthI = true; - ptrGetCharWidthI = (PtrGetCharWidthI)QSystemLibrary::resolve(QStringLiteral("gdi32"), "GetCharWidthI"); -} - -static inline quint16 getUShort(unsigned char *p) -{ - quint16 val; - val = *p++ << 8; - val |= *p; - - return val; -} - -// general font engine - -QFixed QWindowsFontEngine::lineThickness() const -{ - if(lineWidth > 0) - return lineWidth; - - return QFontEngine::lineThickness(); -} - -static OUTLINETEXTMETRIC *getOutlineTextMetric(HDC hdc) -{ - int size; - size = GetOutlineTextMetrics(hdc, 0, 0); - OUTLINETEXTMETRIC *otm = (OUTLINETEXTMETRIC *)malloc(size); - GetOutlineTextMetrics(hdc, size, otm); - return otm; -} - -bool QWindowsFontEngine::hasCFFTable() const -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - return GetFontData(hdc, MAKE_LITTLE_ENDIAN_TAG('C', 'F', 'F', ' '), 0, 0, 0) != GDI_ERROR; -} - -bool QWindowsFontEngine::hasCMapTable() const -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - return GetFontData(hdc, MAKE_LITTLE_ENDIAN_TAG('c', 'm', 'a', 'p'), 0, 0, 0) != GDI_ERROR; -} - -bool QWindowsFontEngine::hasGlyfTable() const -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - return GetFontData(hdc, MAKE_LITTLE_ENDIAN_TAG('g', 'l', 'y', 'f'), 0, 0, 0) != GDI_ERROR; -} - -bool QWindowsFontEngine::hasEbdtTable() const -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - return GetFontData(hdc, MAKE_LITTLE_ENDIAN_TAG('E', 'B', 'D', 'T'), 0, 0, 0) != GDI_ERROR; -} - -static inline QString stringFromOutLineTextMetric(const OUTLINETEXTMETRIC *otm, PSTR offset) -{ - const uchar *p = reinterpret_cast<const uchar *>(otm) + quintptr(offset); - return QString::fromWCharArray(reinterpret_cast<const wchar_t *>(p)); -} - -void QWindowsFontEngine::getCMap() -{ - ttf = (bool)(tm.tmPitchAndFamily & TMPF_TRUETYPE) || hasCMapTable(); - - cffTable = hasCFFTable(); - - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - bool symb = false; - if (ttf) { - cmapTable = getSfntTable(MAKE_TAG('c', 'm', 'a', 'p')); - cmap = QFontEngine::getCMap(reinterpret_cast<const uchar *>(cmapTable.constData()), - cmapTable.size(), &symb, &cmapSize); - } - if (!cmap) { - ttf = false; - symb = false; - } - symbol = symb; - designToDevice = 1; - _faceId.index = 0; - if(cmap) { - OUTLINETEXTMETRIC *otm = getOutlineTextMetric(hdc); - unitsPerEm = int(otm->otmEMSquare); - const QFixed unitsPerEmF(unitsPerEm); - designToDevice = unitsPerEmF / QFixed::fromReal(fontDef.pixelSize); - x_height = int(otm->otmsXHeight); - loadKerningPairs(designToDevice); - _faceId.filename = QFile::encodeName(stringFromOutLineTextMetric(otm, otm->otmpFullName)); - lineWidth = otm->otmsUnderscoreSize; - fsType = otm->otmfsType; - free(otm); - - } else { - unitsPerEm = tm.tmHeight; - } -} - -int QWindowsFontEngine::getGlyphIndexes(const QChar *str, int numChars, QGlyphLayout *glyphs) const -{ - int glyph_pos = 0; - { - if (symbol) { - QStringIterator it(str, str + numChars); - while (it.hasNext()) { - const uint uc = it.next(); - glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, cmapSize, uc); - if(!glyphs->glyphs[glyph_pos] && uc < 0x100) - glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, cmapSize, uc + 0xf000); - ++glyph_pos; - } - } else if (ttf) { - QStringIterator it(str, str + numChars); - while (it.hasNext()) { - const uint uc = it.next(); - glyphs->glyphs[glyph_pos] = getTrueTypeGlyphIndex(cmap, cmapSize, uc); - ++glyph_pos; - } - } else { - QStringIterator it(str, str + numChars); - while (it.hasNext()) { - const uint uc = it.next(); - if (uc >= tm.tmFirstChar && uc <= tm.tmLastChar) - glyphs->glyphs[glyph_pos] = uc; - else - glyphs->glyphs[glyph_pos] = 0; - ++glyph_pos; - } - } - } - glyphs->numGlyphs = glyph_pos; - return glyph_pos; -} - -/*! - \class QWindowsFontEngine - \brief Standard Windows font engine. - \internal - \ingroup qt-lighthouse-win - - Will probably be superseded by a common Free Type font engine in Qt 5.X. -*/ - -QWindowsFontEngine::QWindowsFontEngine(const QString &name, - LOGFONT lf, - const QSharedPointer<QWindowsFontEngineData> &fontEngineData) - : QFontEngine(Win), - m_fontEngineData(fontEngineData), - _name(name), - hfont(0), - m_logfont(lf), - ttf(0), - hasOutline(0), - cmap(0), - cmapSize(0), - lbearing(SHRT_MIN), - rbearing(SHRT_MIN), - x_height(-1), - synthesized_flags(-1), - lineWidth(-1), - widthCache(0), - widthCacheSize(0), - designAdvances(0), - designAdvancesSize(0) -{ - qCDebug(lcQpaFonts) << __FUNCTION__ << name << lf.lfHeight; - hfont = CreateFontIndirect(&m_logfont); - if (!hfont) { - qErrnoWarning("%s: CreateFontIndirect failed for family '%s'", __FUNCTION__, qPrintable(name)); - hfont = QWindowsFontDatabase::systemFont(); - } - - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - const BOOL res = GetTextMetrics(hdc, &tm); - if (!res) { - qErrnoWarning("%s: GetTextMetrics failed", __FUNCTION__); - ZeroMemory(&tm, sizeof(TEXTMETRIC)); - } - - fontDef.pixelSize = -lf.lfHeight; - fontDef.fixedPitch = !(tm.tmPitchAndFamily & TMPF_FIXED_PITCH); - - cache_cost = tm.tmHeight * tm.tmAveCharWidth * 2000; - getCMap(); - - if (!resolvedGetCharWidthI) - resolveGetCharWidthI(); - - // ### Properties accessed by QWin32PrintEngine (QtPrintSupport) - QVariantMap userData; - userData.insert(QStringLiteral("logFont"), QVariant::fromValue(m_logfont)); - userData.insert(QStringLiteral("hFont"), QVariant::fromValue(hfont)); - userData.insert(QStringLiteral("trueType"), QVariant(bool(ttf))); - setUserData(userData); - - hasUnreliableOutline = hasGlyfTable() && hasEbdtTable(); -} - -QWindowsFontEngine::~QWindowsFontEngine() -{ - if (designAdvances) - free(designAdvances); - - if (widthCache) - free(widthCache); - - // make sure we aren't by accident still selected - SelectObject(m_fontEngineData->hdc, QWindowsFontDatabase::systemFont()); - - if (!DeleteObject(hfont)) - qErrnoWarning("%s: QFontEngineWin: failed to delete font...", __FUNCTION__); - qCDebug(lcQpaFonts) << __FUNCTION__ << _name; - - if (!uniqueFamilyName.isEmpty()) { - QPlatformFontDatabase *pfdb = QWindowsIntegration::instance()->fontDatabase(); - static_cast<QWindowsFontDatabase *>(pfdb)->derefUniqueFont(uniqueFamilyName); - } -} - -glyph_t QWindowsFontEngine::glyphIndex(uint ucs4) const -{ - glyph_t glyph = 0; - - if (symbol) { - glyph = getTrueTypeGlyphIndex(cmap, cmapSize, ucs4); - if (glyph == 0 && ucs4 < 0x100) - glyph = getTrueTypeGlyphIndex(cmap, cmapSize, ucs4 + 0xf000); - } else if (ttf) { - glyph = getTrueTypeGlyphIndex(cmap, cmapSize, ucs4); - } else if (ucs4 >= tm.tmFirstChar && ucs4 <= tm.tmLastChar) { - glyph = ucs4; - } - - return glyph; -} - -HGDIOBJ QWindowsFontEngine::selectDesignFont() const -{ - LOGFONT f = m_logfont; - f.lfHeight = -unitsPerEm; - f.lfWidth = 0; - HFONT designFont = CreateFontIndirect(&f); - return SelectObject(m_fontEngineData->hdc, designFont); -} - -bool QWindowsFontEngine::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; - } - - glyphs->numGlyphs = *nglyphs; - *nglyphs = getGlyphIndexes(str, len, glyphs); - - if (!(flags & GlyphIndicesOnly)) - recalcAdvances(glyphs, flags); - - return true; -} - -inline void calculateTTFGlyphWidth(HDC hdc, UINT glyph, int &width) -{ - if (ptrGetCharWidthI) - ptrGetCharWidthI(hdc, glyph, 1, 0, &width); -} - -void QWindowsFontEngine::recalcAdvances(QGlyphLayout *glyphs, QFontEngine::ShaperFlags flags) const -{ - HGDIOBJ oldFont = 0; - HDC hdc = m_fontEngineData->hdc; - if (ttf && (flags & DesignMetrics)) { - for(int i = 0; i < glyphs->numGlyphs; i++) { - unsigned int glyph = glyphs->glyphs[i]; - if(int(glyph) >= designAdvancesSize) { - const int newSize = int(glyph + 256) >> 8 << 8; - designAdvances = reinterpret_cast<QFixed *>(realloc(designAdvances, size_t(newSize) * sizeof(QFixed))); - Q_CHECK_PTR(designAdvances); - for(int i = designAdvancesSize; i < newSize; ++i) - designAdvances[i] = -1000000; - designAdvancesSize = newSize; - } - if (designAdvances[glyph] < -999999) { - if (!oldFont) - oldFont = selectDesignFont(); - - int width = 0; - calculateTTFGlyphWidth(hdc, glyph, width); - designAdvances[glyph] = QFixed(width) / designToDevice; - } - glyphs->advances[i] = designAdvances[glyph]; - } - if(oldFont) - DeleteObject(SelectObject(hdc, oldFont)); - } else { - for(int i = 0; i < glyphs->numGlyphs; i++) { - unsigned int glyph = glyphs->glyphs[i]; - - if (glyph >= widthCacheSize) { - const uint newSize = (glyph + 256) >> 8 << 8; - widthCache = reinterpret_cast<unsigned char *>(realloc(widthCache, newSize * sizeof(QFixed))); - Q_CHECK_PTR(widthCache); - memset(widthCache + widthCacheSize, 0, newSize - widthCacheSize); - widthCacheSize = newSize; - } - glyphs->advances[i] = widthCache[glyph]; - // font-width cache failed - if (glyphs->advances[i].value() == 0) { - int width = 0; - if (!oldFont) - oldFont = SelectObject(hdc, hfont); - - if (!ttf) { - QChar ch[2] = { ushort(glyph), 0 }; - int chrLen = 1; - if (QChar::requiresSurrogates(glyph)) { - ch[0] = QChar::highSurrogate(glyph); - ch[1] = QChar::lowSurrogate(glyph); - ++chrLen; - } - SIZE size = {0, 0}; - GetTextExtentPoint32(hdc, reinterpret_cast<const wchar_t *>(ch), chrLen, &size); - width = size.cx; - } else { - calculateTTFGlyphWidth(hdc, glyph, width); - } - glyphs->advances[i] = width; - // if glyph's within cache range, store it for later - if (width > 0 && width < 0x100) - widthCache[glyph] = uchar(width); - } - } - - if (oldFont) - SelectObject(hdc, oldFont); - } -} - -glyph_metrics_t QWindowsFontEngine::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, -tm.tmAscent, w - lastRightBearing(glyphs), tm.tmHeight, w, 0); -} - -bool QWindowsFontEngine::getOutlineMetrics(glyph_t glyph, const QTransform &t, glyph_metrics_t *metrics) const -{ - Q_ASSERT(metrics != 0); - - HDC hdc = m_fontEngineData->hdc; - - GLYPHMETRICS gm; - DWORD res = 0; - MAT2 mat; - mat.eM11.value = mat.eM22.value = 1; - mat.eM11.fract = mat.eM22.fract = 0; - mat.eM21.value = mat.eM12.value = 0; - mat.eM21.fract = mat.eM12.fract = 0; - - if (t.type() > QTransform::TxTranslate) { - // We need to set the transform using the HDC's world - // matrix rather than using the MAT2 above, because the - // results provided when transforming via MAT2 does not - // match the glyphs that are drawn using a WorldTransform - XFORM xform; - xform.eM11 = FLOAT(t.m11()); - xform.eM12 = FLOAT(t.m12()); - xform.eM21 = FLOAT(t.m21()); - xform.eM22 = FLOAT(t.m22()); - xform.eDx = 0; - xform.eDy = 0; - SetGraphicsMode(hdc, GM_ADVANCED); - SetWorldTransform(hdc, &xform); - } - - uint format = GGO_METRICS; - if (ttf) - format |= GGO_GLYPH_INDEX; - res = GetGlyphOutline(hdc, glyph, format, &gm, 0, 0, &mat); - - if (t.type() > QTransform::TxTranslate) { - XFORM xform; - xform.eM11 = xform.eM22 = 1; - xform.eM12 = xform.eM21 = xform.eDx = xform.eDy = 0; - SetWorldTransform(hdc, &xform); - SetGraphicsMode(hdc, GM_COMPATIBLE); - } - - if (res != GDI_ERROR) { - *metrics = glyph_metrics_t(gm.gmptGlyphOrigin.x, -gm.gmptGlyphOrigin.y, - int(gm.gmBlackBoxX), int(gm.gmBlackBoxY), - gm.gmCellIncX, gm.gmCellIncY); - return true; - } else { - return false; - } -} - -glyph_metrics_t QWindowsFontEngine::boundingBox(glyph_t glyph, const QTransform &t) -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - - glyph_metrics_t glyphMetrics; - bool success = getOutlineMetrics(glyph, t, &glyphMetrics); - - if (!ttf && !success) { - // Bitmap fonts - wchar_t ch = wchar_t(glyph); - ABCFLOAT abc; - GetCharABCWidthsFloat(hdc, ch, ch, &abc); - int width = qRound(abc.abcfB); - - return glyph_metrics_t(QFixed::fromReal(abc.abcfA), -tm.tmAscent, width, tm.tmHeight, width, 0).transformed(t); - } - - return glyphMetrics; -} - -QFixed QWindowsFontEngine::ascent() const -{ - return tm.tmAscent; -} - -QFixed QWindowsFontEngine::descent() const -{ - return tm.tmDescent; -} - -QFixed QWindowsFontEngine::leading() const -{ - return tm.tmExternalLeading; -} - -namespace { -# pragma pack(1) - - struct OS2Table - { - quint16 version; - qint16 avgCharWidth; - quint16 weightClass; - quint16 widthClass; - quint16 type; - qint16 subscriptXSize; - qint16 subscriptYSize; - qint16 subscriptXOffset; - qint16 subscriptYOffset; - qint16 superscriptXSize; - qint16 superscriptYSize; - qint16 superscriptXOffset; - qint16 superscriptYOffset; - qint16 strikeOutSize; - qint16 strikeOutPosition; - qint16 familyClass; - quint8 panose[10]; - quint32 unicodeRanges[4]; - quint8 vendorID[4]; - quint16 selection; - quint16 firstCharIndex; - quint16 lastCharIndex; - qint16 typoAscender; - qint16 typoDescender; - qint16 typoLineGap; - quint16 winAscent; - quint16 winDescent; - quint32 codepageRanges[2]; - qint16 height; - qint16 capHeight; - quint16 defaultChar; - quint16 breakChar; - quint16 maxContext; - }; - -# pragma pack() -} - -QFixed QWindowsFontEngine::capHeight() const -{ - const QByteArray tableData = getSfntTable(MAKE_TAG('O', 'S', '/', '2')); - if (size_t(tableData.size()) >= sizeof(OS2Table)) { - const OS2Table *table = reinterpret_cast<const OS2Table *>(tableData.constData()); - if (qFromBigEndian<quint16>(table->version) >= 2) { - qint16 capHeight = qFromBigEndian<qint16>(table->capHeight); - if (capHeight > 0) - return QFixed(capHeight) / designToDevice; - } - } - return calculatedCapHeight(); -} - -QFixed QWindowsFontEngine::xHeight() const -{ - if(x_height >= 0) - return x_height; - return QFontEngine::xHeight(); -} - -QFixed QWindowsFontEngine::averageCharWidth() const -{ - return tm.tmAveCharWidth; -} - -qreal QWindowsFontEngine::maxCharWidth() const -{ - return tm.tmMaxCharWidth; -} - -enum { max_font_count = 256 }; -static const ushort char_table[] = { - 40, - 67, - 70, - 75, - 86, - 88, - 89, - 91, - 102, - 114, - 124, - 127, - 205, - 645, - 884, - 922, - 1070, - 12386, - 0 -}; - -static const int char_table_entries = sizeof(char_table)/sizeof(ushort); - -#ifndef Q_CC_MINGW -void QWindowsFontEngine::getGlyphBearings(glyph_t glyph, qreal *leftBearing, qreal *rightBearing) -{ - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - - if (ttf) { - ABC abcWidths; - GetCharABCWidthsI(hdc, glyph, 1, 0, &abcWidths); - if (leftBearing) - *leftBearing = abcWidths.abcA; - if (rightBearing) - *rightBearing = abcWidths.abcC; - } else { - QFontEngine::getGlyphBearings(glyph, leftBearing, rightBearing); - } -} -#endif // Q_CC_MINGW - -bool QWindowsFontEngine::hasUnreliableGlyphOutline() const -{ - return hasUnreliableOutline || QFontEngine::hasUnreliableGlyphOutline(); -} - -qreal QWindowsFontEngine::minLeftBearing() const -{ - if (lbearing == SHRT_MIN) - minRightBearing(); // calculates both - - return lbearing; -} - -qreal QWindowsFontEngine::minRightBearing() const -{ - if (rbearing == SHRT_MIN) { - int ml = 0; - int mr = 0; - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - if (ttf) { - ABC *abc = 0; - int n = tm.tmLastChar - tm.tmFirstChar; - if (n <= max_font_count) { - abc = new ABC[n+1]; - GetCharABCWidths(hdc, tm.tmFirstChar, tm.tmLastChar, abc); - } else { - abc = new ABC[char_table_entries+1]; - for(int i = 0; i < char_table_entries; i++) - GetCharABCWidths(hdc, char_table[i], char_table[i], abc + i); - n = char_table_entries; - } - ml = abc[0].abcA; - mr = abc[0].abcC; - for (int i = 1; i < n; i++) { - if (abc[i].abcA + abc[i].abcB + abc[i].abcC != 0) { - ml = qMin(ml,abc[i].abcA); - mr = qMin(mr,abc[i].abcC); - } - } - delete [] abc; - } else { - ABCFLOAT *abc = 0; - int n = tm.tmLastChar - tm.tmFirstChar+1; - if (n <= max_font_count) { - abc = new ABCFLOAT[n]; - GetCharABCWidthsFloat(hdc, tm.tmFirstChar, tm.tmLastChar, abc); - } else { - abc = new ABCFLOAT[char_table_entries]; - for(int i = 0; i < char_table_entries; i++) - GetCharABCWidthsFloat(hdc, char_table[i], char_table[i], abc+i); - n = char_table_entries; - } - float fml = abc[0].abcfA; - float fmr = abc[0].abcfC; - for (int i=1; i<n; i++) { - if (abc[i].abcfA + abc[i].abcfB + abc[i].abcfC != 0) { - fml = qMin(fml,abc[i].abcfA); - fmr = qMin(fmr,abc[i].abcfC); - } - } - ml = int(fml - 0.9999); - mr = int(fmr - 0.9999); - delete [] abc; - } - lbearing = ml; - rbearing = mr; - } - - return rbearing; -} - -static inline double qt_fixed_to_double(const FIXED &p) { - return ((p.value << 16) + p.fract) / 65536.0; -} - -static inline QPointF qt_to_qpointf(const POINTFX &pt, qreal scale) { - return QPointF(qt_fixed_to_double(pt.x) * scale, -qt_fixed_to_double(pt.y) * scale); -} - -#ifndef GGO_UNHINTED -#define GGO_UNHINTED 0x0100 -#endif - -static bool addGlyphToPath(glyph_t glyph, const QFixedPoint &position, HDC hdc, - QPainterPath *path, bool ttf, glyph_metrics_t *metric = 0, qreal scale = 1) -{ - MAT2 mat; - mat.eM11.value = mat.eM22.value = 1; - mat.eM11.fract = mat.eM22.fract = 0; - mat.eM21.value = mat.eM12.value = 0; - mat.eM21.fract = mat.eM12.fract = 0; - - GLYPHMETRICS gMetric; - memset(&gMetric, 0, sizeof(GLYPHMETRICS)); - - if (metric) { - // If metrics requested, retrieve first using GGO_METRICS, because the returned - // values are incorrect for OpenType PS fonts if obtained at the same time as the - // glyph paths themselves (ie. with GGO_NATIVE as the format). - uint format = GGO_METRICS; - if (ttf) - format |= GGO_GLYPH_INDEX; - if (GetGlyphOutline(hdc, glyph, format, &gMetric, 0, 0, &mat) == GDI_ERROR) - return false; - // #### obey scale - *metric = glyph_metrics_t(gMetric.gmptGlyphOrigin.x, -gMetric.gmptGlyphOrigin.y, - int(gMetric.gmBlackBoxX), int(gMetric.gmBlackBoxY), - gMetric.gmCellIncX, gMetric.gmCellIncY); - } - - uint glyphFormat = GGO_NATIVE; - - if (ttf) - glyphFormat |= GGO_GLYPH_INDEX; - - const DWORD bufferSize = GetGlyphOutline(hdc, glyph, glyphFormat, &gMetric, 0, 0, &mat); - if (bufferSize == GDI_ERROR) - return false; - - char *dataBuffer = new char[bufferSize]; - DWORD ret = GDI_ERROR; - ret = GetGlyphOutline(hdc, glyph, glyphFormat, &gMetric, bufferSize, dataBuffer, &mat); - if (ret == GDI_ERROR) { - delete [] dataBuffer; - return false; - } - - DWORD offset = 0; - DWORD headerOffset = 0; - - QPointF oset = position.toPointF(); - while (headerOffset < bufferSize) { - const TTPOLYGONHEADER *ttph = reinterpret_cast<const TTPOLYGONHEADER *>(dataBuffer + headerOffset); - - QPointF lastPoint(qt_to_qpointf(ttph->pfxStart, scale)); - path->moveTo(lastPoint + oset); - offset += sizeof(TTPOLYGONHEADER); - while (offset < headerOffset + ttph->cb) { - const TTPOLYCURVE *curve = reinterpret_cast<const TTPOLYCURVE *>(dataBuffer + offset); - switch (curve->wType) { - case TT_PRIM_LINE: { - for (int i=0; i<curve->cpfx; ++i) { - QPointF p = qt_to_qpointf(curve->apfx[i], scale) + oset; - path->lineTo(p); - } - break; - } - case TT_PRIM_QSPLINE: { - const QPainterPath::Element &elm = path->elementAt(path->elementCount()-1); - QPointF prev(elm.x, elm.y); - QPointF endPoint; - for (int i=0; i<curve->cpfx - 1; ++i) { - QPointF p1 = qt_to_qpointf(curve->apfx[i], scale) + oset; - QPointF p2 = qt_to_qpointf(curve->apfx[i+1], scale) + oset; - if (i < curve->cpfx - 2) { - endPoint = QPointF((p1.x() + p2.x()) / 2, (p1.y() + p2.y()) / 2); - } else { - endPoint = p2; - } - - path->quadTo(p1, endPoint); - prev = endPoint; - } - - break; - } - case TT_PRIM_CSPLINE: { - for (int i=0; i<curve->cpfx; ) { - QPointF p2 = qt_to_qpointf(curve->apfx[i++], scale) + oset; - QPointF p3 = qt_to_qpointf(curve->apfx[i++], scale) + oset; - QPointF p4 = qt_to_qpointf(curve->apfx[i++], scale) + oset; - path->cubicTo(p2, p3, p4); - } - break; - } - default: - qWarning("QFontEngineWin::addOutlineToPath, unhandled switch case"); - } - offset += sizeof(TTPOLYCURVE) + (curve->cpfx-1) * sizeof(POINTFX); - } - path->closeSubpath(); - headerOffset += ttph->cb; - } - delete [] dataBuffer; - - return true; -} - -void QWindowsFontEngine::addGlyphsToPath(glyph_t *glyphs, QFixedPoint *positions, int nglyphs, - QPainterPath *path, QTextItem::RenderFlags) -{ - LOGFONT lf = m_logfont; - // The sign must be negative here to make sure we match against character height instead of - // hinted cell height. This ensures that we get linear matching, and we need this for - // paths since we later on apply a scaling transform to the glyph outline to get the - // font at the correct pixel size. - lf.lfHeight = -unitsPerEm; - lf.lfWidth = 0; - HFONT hf = CreateFontIndirect(&lf); - HDC hdc = m_fontEngineData->hdc; - HGDIOBJ oldfont = SelectObject(hdc, hf); - - for(int i = 0; i < nglyphs; ++i) { - if (!addGlyphToPath(glyphs[i], positions[i], hdc, path, ttf, /*metric*/0, - qreal(fontDef.pixelSize) / unitsPerEm)) { - // Some windows fonts, like "Modern", are vector stroke - // fonts, which are reported as TMPF_VECTOR but do not - // support GetGlyphOutline, and thus we set this bit so - // that addOutLineToPath can check it and return safely... - hasOutline = false; - break; - } - } - DeleteObject(SelectObject(hdc, oldfont)); -} - -void QWindowsFontEngine::addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, - QPainterPath *path, QTextItem::RenderFlags flags) -{ - if(tm.tmPitchAndFamily & (TMPF_TRUETYPE | TMPF_VECTOR)) { - hasOutline = true; - QFontEngine::addOutlineToPath(x, y, glyphs, path, flags); - if (hasOutline) { - // has_outline is set to false if addGlyphToPath gets - // false from GetGlyphOutline, meaning its not an outline - // font. - return; - } - } - QFontEngine::addBitmapFontToPath(x, y, glyphs, path, flags); -} - -QFontEngine::FaceId QWindowsFontEngine::faceId() const -{ - return _faceId; -} - -QT_BEGIN_INCLUDE_NAMESPACE -#include <qdebug.h> -QT_END_INCLUDE_NAMESPACE - -int QWindowsFontEngine::synthesized() const -{ - if(synthesized_flags == -1) { - synthesized_flags = 0; - if(ttf) { - const DWORD HEAD = MAKE_LITTLE_ENDIAN_TAG('h', 'e', 'a', 'd'); - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - uchar data[4]; - GetFontData(hdc, HEAD, 44, &data, 4); - USHORT macStyle = getUShort(data); - if (tm.tmItalic && !(macStyle & 2)) - synthesized_flags = SynthesizedItalic; - if (fontDef.stretch != 100 && ttf) - synthesized_flags |= SynthesizedStretch; - if (tm.tmWeight >= 500 && !(macStyle & 1)) - synthesized_flags |= SynthesizedBold; - //qDebug() << "font is" << _name << - // "it=" << (macStyle & 2) << fontDef.style << "flags=" << synthesized_flags; - } - } - return synthesized_flags; -} - -QFixed QWindowsFontEngine::emSquareSize() const -{ - return unitsPerEm; -} - -QFontEngine::Properties QWindowsFontEngine::properties() const -{ - LOGFONT lf = m_logfont; - lf.lfHeight = unitsPerEm; - HFONT hf = CreateFontIndirect(&lf); - HDC hdc = m_fontEngineData->hdc; - HGDIOBJ oldfont = SelectObject(hdc, hf); - OUTLINETEXTMETRIC *otm = getOutlineTextMetric(hdc); - Properties p; - p.emSquare = unitsPerEm; - p.italicAngle = otm->otmItalicAngle; - const QByteArray name = stringFromOutLineTextMetric(otm, otm->otmpFamilyName).toLatin1() - + stringFromOutLineTextMetric(otm, otm->otmpStyleName).toLatin1(); - p.postscriptName = QFontEngine::convertToPostscriptFontFamilyName(name); - p.boundingBox = QRectF(otm->otmrcFontBox.left, -otm->otmrcFontBox.top, - otm->otmrcFontBox.right - otm->otmrcFontBox.left, - otm->otmrcFontBox.top - otm->otmrcFontBox.bottom); - p.ascent = otm->otmAscent; - p.descent = -otm->otmDescent; - p.leading = int(otm->otmLineGap); - p.capHeight = 0; - p.lineWidth = otm->otmsUnderscoreSize; - free(otm); - DeleteObject(SelectObject(hdc, oldfont)); - return p; -} - -void QWindowsFontEngine::getUnscaledGlyph(glyph_t glyph, QPainterPath *path, glyph_metrics_t *metrics) -{ - LOGFONT lf = m_logfont; - lf.lfHeight = -unitsPerEm; - int flags = synthesized(); - if(flags & SynthesizedItalic) - lf.lfItalic = false; - lf.lfWidth = 0; - HFONT hf = CreateFontIndirect(&lf); - HDC hdc = m_fontEngineData->hdc; - HGDIOBJ oldfont = SelectObject(hdc, hf); - QFixedPoint p; - p.x = 0; - p.y = 0; - addGlyphToPath(glyph, p, hdc, path, ttf, metrics); - DeleteObject(SelectObject(hdc, oldfont)); -} - -bool QWindowsFontEngine::getSfntTableData(uint tag, uchar *buffer, uint *length) const -{ - if (!ttf && !cffTable) - return false; - HDC hdc = m_fontEngineData->hdc; - SelectObject(hdc, hfont); - DWORD t = qbswap<quint32>(tag); - *length = GetFontData(hdc, t, 0, buffer, *length); - Q_ASSERT(*length == GDI_ERROR || int(*length) > 0); - return *length != GDI_ERROR; -} - -#if !defined(CLEARTYPE_QUALITY) -# define CLEARTYPE_QUALITY 5 -#endif - -QWindowsNativeImage *QWindowsFontEngine::drawGDIGlyph(HFONT font, glyph_t glyph, int margin, - const QTransform &t, - QImage::Format mask_format) -{ - Q_UNUSED(mask_format) - glyph_metrics_t gm = boundingBox(glyph); - -// printf(" -> for glyph %4x\n", glyph); - - int gx = gm.x.toInt(); - int gy = gm.y.toInt(); - int iw = gm.width.toInt(); - int ih = gm.height.toInt(); - - if (iw <= 0 || ih <= 0) - return 0; - - bool has_transformation = t.type() > QTransform::TxTranslate; - - unsigned int options = ttf ? ETO_GLYPH_INDEX : 0; - XFORM xform; - - if (has_transformation) { - xform.eM11 = FLOAT(t.m11()); - xform.eM12 = FLOAT(t.m12()); - xform.eM21 = FLOAT(t.m21()); - xform.eM22 = FLOAT(t.m22()); - xform.eDx = margin; - xform.eDy = margin; - - const HDC hdc = m_fontEngineData->hdc; - - SetGraphicsMode(hdc, GM_ADVANCED); - SetWorldTransform(hdc, &xform); - HGDIOBJ old_font = SelectObject(hdc, font); - - const UINT ggo_options = GGO_METRICS | (ttf ? GGO_GLYPH_INDEX : 0); - GLYPHMETRICS tgm; - MAT2 mat; - memset(&mat, 0, sizeof(mat)); - mat.eM11.value = mat.eM22.value = 1; - - const DWORD result = GetGlyphOutline(hdc, glyph, ggo_options, &tgm, 0, 0, &mat); - - XFORM identity = {1, 0, 0, 1, 0, 0}; - SetWorldTransform(hdc, &identity); - SetGraphicsMode(hdc, GM_COMPATIBLE); - SelectObject(hdc, old_font); - - if (result == GDI_ERROR) { - const int errorCode = int(GetLastError()); - qErrnoWarning(errorCode, "QWinFontEngine: unable to query transformed glyph metrics (GetGlyphOutline() failed, error %d)...", errorCode); - return 0; - } - - iw = int(tgm.gmBlackBoxX); - ih = int(tgm.gmBlackBoxY); - - xform.eDx -= tgm.gmptGlyphOrigin.x; - xform.eDy += tgm.gmptGlyphOrigin.y; - } - - // The padding here needs to be kept in sync with the values in alphaMapBoundingBox. - QWindowsNativeImage *ni = new QWindowsNativeImage(iw + 2 * margin, - ih + 2 * margin, - QWindowsNativeImage::systemFormat()); - - /*If cleartype is enabled we use the standard system format even on Windows CE - and not the special textbuffer format we have to use if cleartype is disabled*/ - - ni->image().fill(0xffffffff); - - HDC hdc = ni->hdc(); - - SelectObject(hdc, GetStockObject(NULL_BRUSH)); - SelectObject(hdc, GetStockObject(BLACK_PEN)); - SetTextColor(hdc, RGB(0,0,0)); - SetBkMode(hdc, TRANSPARENT); - SetTextAlign(hdc, TA_BASELINE); - - HGDIOBJ old_font = SelectObject(hdc, font); - - if (has_transformation) { - SetGraphicsMode(hdc, GM_ADVANCED); - SetWorldTransform(hdc, &xform); - ExtTextOut(hdc, 0, 0, options, 0, reinterpret_cast<LPCWSTR>(&glyph), 1, 0); - } else { - ExtTextOut(hdc, -gx + margin, -gy + margin, options, 0, reinterpret_cast<LPCWSTR>(&glyph), 1, 0); - } - - SelectObject(hdc, old_font); - return ni; -} - -glyph_metrics_t QWindowsFontEngine::alphaMapBoundingBox(glyph_t glyph, QFixed, const QTransform &matrix, GlyphFormat format) -{ - int margin = 0; - if (format == QFontEngine::Format_A32 || format == QFontEngine::Format_ARGB) - margin = glyphMargin(QFontEngine::Format_A32); - glyph_metrics_t gm = boundingBox(glyph, matrix); - gm.width += margin * 2; - gm.height += margin * 2; - return gm; -} - -QImage QWindowsFontEngine::alphaMapForGlyph(glyph_t glyph, const QTransform &xform) -{ - HFONT font = hfont; - - bool clearTypeTemporarilyDisabled = (m_fontEngineData->clearTypeEnabled && m_logfont.lfQuality != NONANTIALIASED_QUALITY); - if (clearTypeTemporarilyDisabled) { - LOGFONT lf = m_logfont; - lf.lfQuality = ANTIALIASED_QUALITY; - font = CreateFontIndirect(&lf); - } - QImage::Format mask_format = QWindowsNativeImage::systemFormat(); - mask_format = QImage::Format_RGB32; - - const QWindowsNativeImage *mask = drawGDIGlyph(font, glyph, 0, xform, mask_format); - if (mask == 0) { - if (m_fontEngineData->clearTypeEnabled) - DeleteObject(font); - return QImage(); - } - - QImage alphaMap(mask->width(), mask->height(), QImage::Format_Alpha8); - - - // Copy data... Cannot use QPainter here as GDI has messed up the - // Alpha channel of the ni.image pixels... - for (int y=0; y<mask->height(); ++y) { - uchar *dest = alphaMap.scanLine(y); - if (mask->image().format() == QImage::Format_RGB16) { - const qint16 *src = reinterpret_cast<const qint16 *>(mask->image().constScanLine(y)); - for (int x=0; x<mask->width(); ++x) - dest[x] = 255 - qGray(src[x]); - } else { - const uint *src = reinterpret_cast<const uint *>(mask->image().constScanLine(y)); - for (int x=0; x<mask->width(); ++x) { - if (QWindowsNativeImage::systemFormat() == QImage::Format_RGB16) - dest[x] = 255 - qGray(src[x]); - else - dest[x] = 255 - (m_fontEngineData->pow_gamma[qGray(src[x])] * 255. / 2047.); - } - } - } - - // Cleanup... - delete mask; - if (clearTypeTemporarilyDisabled) { - DeleteObject(font); - } - - return alphaMap; -} - -#define SPI_GETFONTSMOOTHINGCONTRAST 0x200C -#define SPI_SETFONTSMOOTHINGCONTRAST 0x200D - -QImage QWindowsFontEngine::alphaRGBMapForGlyph(glyph_t glyph, QFixed, const QTransform &t) -{ - HFONT font = hfont; - - UINT contrast; - SystemParametersInfo(SPI_GETFONTSMOOTHINGCONTRAST, 0, &contrast, 0); - SystemParametersInfo(SPI_SETFONTSMOOTHINGCONTRAST, 0, reinterpret_cast<void *>(quintptr(1000)), 0); - - int margin = glyphMargin(QFontEngine::Format_A32); - QWindowsNativeImage *mask = drawGDIGlyph(font, glyph, margin, t, QImage::Format_RGB32); - SystemParametersInfo(SPI_SETFONTSMOOTHINGCONTRAST, 0, reinterpret_cast<void *>(quintptr(contrast)), 0); - - if (mask == 0) - return QImage(); - - // Gracefully handle the odd case when the display is 16-bit - const QImage source = mask->image().depth() == 32 - ? mask->image() - : mask->image().convertToFormat(QImage::Format_RGB32); - - QImage rgbMask(mask->width(), mask->height(), QImage::Format_RGB32); - for (int y=0; y<mask->height(); ++y) { - uint *dest = (uint *) rgbMask.scanLine(y); - const uint *src = reinterpret_cast<const uint *>(source.constScanLine(y)); - for (int x=0; x<mask->width(); ++x) { - dest[x] = 0xffffffff - (0x00ffffff & src[x]); - } - } - - delete mask; - - return rgbMask; -} - -QFontEngine *QWindowsFontEngine::cloneWithSize(qreal pixelSize) const -{ - QFontDef request = fontDef; - QString actualFontName = request.family; - if (!uniqueFamilyName.isEmpty()) - request.family = uniqueFamilyName; - request.pixelSize = pixelSize; - - QFontEngine *fontEngine = - QWindowsFontDatabase::createEngine(request, - QWindowsContext::instance()->defaultDPI(), - m_fontEngineData); - if (fontEngine) { - fontEngine->fontDef.family = actualFontName; - if (!uniqueFamilyName.isEmpty()) { - static_cast<QWindowsFontEngine *>(fontEngine)->setUniqueFamilyName(uniqueFamilyName); - QPlatformFontDatabase *pfdb = QWindowsIntegration::instance()->fontDatabase(); - static_cast<QWindowsFontDatabase *>(pfdb)->refUniqueFont(uniqueFamilyName); - } - } - return fontEngine; -} - -Qt::HANDLE QWindowsFontEngine::handle() const -{ - return hfont; -} - -void QWindowsFontEngine::initFontInfo(const QFontDef &request, - int dpi) -{ - fontDef = request; // most settings are equal - HDC dc = m_fontEngineData->hdc; - SelectObject(dc, hfont); - wchar_t n[64]; - GetTextFace(dc, 64, n); - fontDef.family = QString::fromWCharArray(n); - fontDef.fixedPitch = !(tm.tmPitchAndFamily & TMPF_FIXED_PITCH); - if (fontDef.pointSize < 0) { - fontDef.pointSize = fontDef.pixelSize * 72. / dpi; - } else if (fontDef.pixelSize == -1) { - fontDef.pixelSize = qRound(fontDef.pointSize * dpi / 72.); - } -} - -/*! - \class QWindowsMultiFontEngine - \brief Standard Windows Multi font engine. - \internal - \ingroup qt-lighthouse-win - - "Merges" several font engines that have gaps in the - supported writing systems. - - Will probably be superseded by a common Free Type font engine in Qt 5.X. -*/ -QWindowsMultiFontEngine::QWindowsMultiFontEngine(QFontEngine *fe, int script) - : QFontEngineMulti(fe, script) -{ -} - -QFontEngine *QWindowsMultiFontEngine::loadEngine(int at) -{ - QFontEngine *fontEngine = engine(0); - QSharedPointer<QWindowsFontEngineData> data; - LOGFONT lf; - -#ifndef QT_NO_DIRECTWRITE - if (fontEngine->type() == QFontEngine::DirectWrite) { - QWindowsFontEngineDirectWrite *fe = static_cast<QWindowsFontEngineDirectWrite *>(fontEngine); - lf = QWindowsFontDatabase::fontDefToLOGFONT(fe->fontDef); - - data = fe->fontEngineData(); - } else -#endif - { - QWindowsFontEngine *fe = static_cast<QWindowsFontEngine*>(fontEngine); - lf = fe->m_logfont; - - data = fe->fontEngineData(); - } - - const QString fam = fallbackFamilyAt(at - 1); - const int faceNameLength = qMin(fam.length(), LF_FACESIZE - 1); - memcpy(lf.lfFaceName, fam.utf16(), faceNameLength * sizeof(wchar_t)); - lf.lfFaceName[faceNameLength] = 0; - -#ifndef QT_NO_DIRECTWRITE - if (fontEngine->type() == QFontEngine::DirectWrite) { - const QString nameSubstitute = QWindowsFontEngineDirectWrite::fontNameSubstitute(fam); - if (nameSubstitute != fam) { - const int nameSubstituteLength = qMin(nameSubstitute.length(), LF_FACESIZE - 1); - memcpy(lf.lfFaceName, nameSubstitute.utf16(), nameSubstituteLength * sizeof(wchar_t)); - lf.lfFaceName[nameSubstituteLength] = 0; - } - - IDWriteFont *directWriteFont = 0; - HRESULT hr = data->directWriteGdiInterop->CreateFontFromLOGFONT(&lf, &directWriteFont); - if (FAILED(hr)) { - qErrnoWarning("%s: CreateFontFromLOGFONT failed", __FUNCTION__); - } else { - Q_ASSERT(directWriteFont); - IDWriteFontFace *directWriteFontFace = NULL; - HRESULT hr = directWriteFont->CreateFontFace(&directWriteFontFace); - if (SUCCEEDED(hr)) { - Q_ASSERT(directWriteFontFace); - QWindowsFontEngineDirectWrite *fedw = new QWindowsFontEngineDirectWrite(directWriteFontFace, - fontEngine->fontDef.pixelSize, - data); - fedw->fontDef.weight = fontEngine->fontDef.weight; - if (fontEngine->fontDef.style > QFont::StyleNormal) - fedw->fontDef.style = fontEngine->fontDef.style; - fedw->fontDef.family = fam; - fedw->fontDef.hintingPreference = fontEngine->fontDef.hintingPreference; - return fedw; - } else { - qErrnoWarning("%s: CreateFontFace failed", __FUNCTION__); - } - } - } -#endif - - // Get here if original font is not DirectWrite or DirectWrite creation failed for some - // reason - - QFontEngine *fe = new QWindowsFontEngine(fam, lf, data); - fe->fontDef.weight = fontEngine->fontDef.weight; - if (fontEngine->fontDef.style > QFont::StyleNormal) - fe->fontDef.style = fontEngine->fontDef.style; - fe->fontDef.family = fam; - fe->fontDef.hintingPreference = fontEngine->fontDef.hintingPreference; - return fe; -} - -bool QWindowsFontEngine::supportsTransformation(const QTransform &transform) const -{ - // Support all transformations for ttf files, and translations for raster fonts - return ttf || transform.type() <= QTransform::TxTranslate; -} - -QT_END_NAMESPACE - |