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Diffstat (limited to 'tqtinterface/qt4/include/private/qt4_qtextengine_p.h')
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1 files changed, 0 insertions, 613 deletions
diff --git a/tqtinterface/qt4/include/private/qt4_qtextengine_p.h b/tqtinterface/qt4/include/private/qt4_qtextengine_p.h deleted file mode 100644 index 2651c12..0000000 --- a/tqtinterface/qt4/include/private/qt4_qtextengine_p.h +++ /dev/null @@ -1,613 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation ([email protected]) -** -** This file is part of the QtGui module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial Usage -** Licensees holding valid Qt Commercial licenses may use this file in -** accordance with the Qt Commercial License Agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Nokia. -** -** GNU Lesser General Public License Usage -** Alternatively, 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. -** -** If you have questions regarding the use of this file, please contact -** Nokia at [email protected]. -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QTEXTENGINE_P_H -#define QTEXTENGINE_P_H - -// -// W A R N I N G -// ------------- -// -// This file is not part of the Qt API. It exists for the convenience -// of other Qt classes. This header file may change from version to -// version without notice, or even be removed. -// -// We mean it. -// - -#include "QtCore/qglobal.h" -#include "QtCore/qstring.h" -#include "QtCore/qvarlengtharray.h" -#include "QtCore/qnamespace.h" -#include "QtGui/qtextlayout.h" -// #include "private/qtextformat_p.h" -#include "private/qt4_qfont_p.h" -#include "QtCore/qvector.h" -#include "QtGui/qpaintengine.h" -#include "QtGui/qtextobject.h" -#include "QtGui/qtextoption.h" -#include "QtCore/qset.h" -#include "QtCore/qdebug.h" -#ifndef QT_BUILD_COMPAT_LIB -// #include "private/qt4_qtextdocument_p.h" -#endif -#include "private/qt4_qharfbuzz_p.h" -#include "private/qt4_qfixed_p.h" - -#include <stdlib.h> - -QT_BEGIN_NAMESPACE - -class QFontPrivate; -class QFontEngine; - -class QString; -class QPainter; - -class QAbstractTextDocumentLayout; - - -// this uses the same coordinate system as Qt, but a different one to freetype. -// * y is usually negative, and is equal to the ascent. -// * negative yoff means the following stuff is drawn higher up. -// the characters bounding rect is given by QRect(x,y,width,height), its advance by -// xoo and yoff -struct glyph_metrics_t -{ - inline glyph_metrics_t() - : x(100000), y(100000) {} - inline glyph_metrics_t(QFixed _x, QFixed _y, QFixed _width, QFixed _height, QFixed _xoff, QFixed _yoff) - : x(_x), - y(_y), - width(_width), - height(_height), - xoff(_xoff), - yoff(_yoff) - {} - QFixed x; - QFixed y; - QFixed width; - QFixed height; - QFixed xoff; - QFixed yoff; - - glyph_metrics_t transformed(const QTransform &xform) const; - inline bool isValid() const {return x != 100000 && y != 100000;} -}; -Q_DECLARE_TYPEINFO(glyph_metrics_t, Q_PRIMITIVE_TYPE); - -struct Q_AUTOTEST_EXPORT QScriptAnalysis -{ - enum Flags { - None = 0, - Lowercase = 1, - Uppercase = 2, - SmallCaps = 3, - LineOrParagraphSeparator = 4, - Space = 5, - SpaceTabOrObject = Space, - Tab = 6, - TabOrObject = Tab, - Object = 7 - }; - unsigned short script : 8; - unsigned short bidiLevel : 6; // Unicode Bidi algorithm embedding level (0-61) - unsigned short flags : 3; - inline bool operator == (const QScriptAnalysis &other) const { - return script == other.script && bidiLevel == other.bidiLevel && flags == other.flags; - } -}; -Q_DECLARE_TYPEINFO(QScriptAnalysis, Q_PRIMITIVE_TYPE); - -struct QGlyphJustification -{ - inline QGlyphJustification() - : type(0), nKashidas(0), space_18d6(0) - {} - - enum JustificationType { - JustifyNone, - JustifySpace, - JustifyKashida - }; - - uint type :2; - uint nKashidas : 6; // more do not make sense... - uint space_18d6 : 24; -}; -Q_DECLARE_TYPEINFO(QGlyphJustification, Q_PRIMITIVE_TYPE); - -struct QGlyphLayoutInstance -{ - QFixedPoint offset; - QFixedPoint advance; - HB_Glyph glyph; - QGlyphJustification justification; - HB_GlyphAttributes attributes; -}; - -struct QGlyphLayout -{ - // init to 0 not needed, done when shaping - QFixedPoint *offsets; // 8 bytes per element - HB_Glyph *glyphs; // 4 bytes per element - QFixed *advances_x; // 4 bytes per element - QFixed *advances_y; // 4 bytes per element - QGlyphJustification *justifications; // 4 bytes per element - HB_GlyphAttributes *attributes; // 2 bytes per element - - int numGlyphs; - - inline QGlyphLayout() : numGlyphs(0) {} - - inline explicit QGlyphLayout(char *address, int totalGlyphs) - { - offsets = reinterpret_cast<QFixedPoint *>(address); - int offset = totalGlyphs * sizeof(HB_FixedPoint); - glyphs = reinterpret_cast<HB_Glyph *>(address + offset); - offset += totalGlyphs * sizeof(HB_Glyph); - advances_x = reinterpret_cast<QFixed *>(address + offset); - offset += totalGlyphs * sizeof(QFixed); - advances_y = reinterpret_cast<QFixed *>(address + offset); - offset += totalGlyphs * sizeof(QFixed); - justifications = reinterpret_cast<QGlyphJustification *>(address + offset); - offset += totalGlyphs * sizeof(QGlyphJustification); - attributes = reinterpret_cast<HB_GlyphAttributes *>(address + offset); - numGlyphs = totalGlyphs; - } - - inline QGlyphLayout mid(int position, int n = -1) const { - QGlyphLayout copy = *this; - copy.glyphs += position; - copy.advances_x += position; - copy.advances_y += position; - copy.offsets += position; - copy.justifications += position; - copy.attributes += position; - if (n == -1) - copy.numGlyphs -= position; - else - copy.numGlyphs = n; - return copy; - } - - static inline int spaceNeededForGlyphLayout(int totalGlyphs) { - return totalGlyphs * (sizeof(HB_Glyph) + sizeof(HB_GlyphAttributes) - + sizeof(QFixed) + sizeof(QFixed) + sizeof(QFixedPoint) - + sizeof(QGlyphJustification)); - } - - inline QFixed effectiveAdvance(int item) const - { return (advances_x[item] + QFixed::fromFixed(justifications[item].space_18d6)) * !attributes[item].dontPrint; } - - inline QGlyphLayoutInstance instance(int position) const { - QGlyphLayoutInstance g; - g.offset.x = offsets[position].x; - g.offset.y = offsets[position].y; - g.glyph = glyphs[position]; - g.advance.x = advances_x[position]; - g.advance.y = advances_y[position]; - g.justification = justifications[position]; - g.attributes = attributes[position]; - return g; - } - - inline void setInstance(int position, const QGlyphLayoutInstance &g) { - offsets[position].x = g.offset.x; - offsets[position].y = g.offset.y; - glyphs[position] = g.glyph; - advances_x[position] = g.advance.x; - advances_y[position] = g.advance.y; - justifications[position] = g.justification; - attributes[position] = g.attributes; - } - - inline void clear(int first = 0, int last = -1) { - if (last == -1) - last = numGlyphs; - if (first == 0 && last == numGlyphs - && reinterpret_cast<char *>(offsets + numGlyphs) == reinterpret_cast<char *>(glyphs)) { - memset(offsets, 0, spaceNeededForGlyphLayout(numGlyphs)); - } else { - const int num = last - first; - memset(offsets + first, 0, num * sizeof(QFixedPoint)); - memset(glyphs + first, 0, num * sizeof(HB_Glyph)); - memset(advances_x + first, 0, num * sizeof(QFixed)); - memset(advances_y + first, 0, num * sizeof(QFixed)); - memset(justifications + first, 0, num * sizeof(QGlyphJustification)); - memset(attributes + first, 0, num * sizeof(HB_GlyphAttributes)); - } - } - - inline char *data() { - return reinterpret_cast<char *>(offsets); - } - - void grow(char *address, int totalGlyphs); -}; - -class QVarLengthGlyphLayoutArray : private QVarLengthArray<void *>, public QGlyphLayout -{ -private: - typedef QVarLengthArray<void *> Array; -public: - QVarLengthGlyphLayoutArray(int totalGlyphs) - : Array(spaceNeededForGlyphLayout(totalGlyphs) / sizeof(void *) + 1) - , QGlyphLayout(reinterpret_cast<char *>(Array::data()), totalGlyphs) - { - memset(Array::data(), 0, Array::size() * sizeof(void *)); - } - - void resize(int totalGlyphs) - { - Array::resize(spaceNeededForGlyphLayout(totalGlyphs) / sizeof(void *) + 1); - - *((QGlyphLayout *)this) = QGlyphLayout(reinterpret_cast<char *>(Array::data()), totalGlyphs); - memset(Array::data(), 0, Array::size() * sizeof(void *)); - } -}; - -template <int N> struct QGlyphLayoutArray : public QGlyphLayout -{ -public: - QGlyphLayoutArray() - : QGlyphLayout(reinterpret_cast<char *>(buffer), N) - { - memset(buffer, 0, sizeof(buffer)); - } - -private: - void *buffer[(N * (sizeof(HB_Glyph) + sizeof(HB_GlyphAttributes) - + sizeof(QFixed) + sizeof(QFixed) + sizeof(QFixedPoint) - + sizeof(QGlyphJustification))) - / sizeof(void *) + 1]; -}; - -struct QScriptItem; -/// Internal QTextItem -class QTextItemInt : public QTextItem -{ -public: - inline QTextItemInt() - : justified(false), underlineStyle(QTextCharFormat::NoUnderline), num_chars(0), chars(0), - logClusters(0), f(0), fontEngine(0) - {} - QTextItemInt(const QScriptItem &si, QFont *font, const QTextCharFormat &format = QTextCharFormat()); - QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars, int numChars, QFontEngine *fe); - - /// copy the structure items, adjusting the glyphs arrays to the right subarrays. - /// the width of the returned QTextItemInt is not adjusted, for speed reasons - QTextItemInt midItem(QFontEngine *fontEngine, int firstGlyphIndex, int numGlyphs) const; - - QFixed descent; - QFixed ascent; - QFixed width; - - RenderFlags flags; - bool justified; - QTextCharFormat::UnderlineStyle underlineStyle; - const QTextCharFormat charFormat; - int num_chars; - const QChar *chars; - const unsigned short *logClusters; - const QFont *f; - - QGlyphLayout glyphs; - QFontEngine *fontEngine; -}; - -inline bool qIsControlChar(ushort uc) -{ - return uc >= 0x200b && uc <= 0x206f - && (uc <= 0x200f /* ZW Space, ZWNJ, ZWJ, LRM and RLM */ - || (uc >= 0x2028 && uc <= 0x202f /* LS, PS, LRE, RLE, PDF, LRO, RLO, NNBSP */) - || uc >= 0x206a /* ISS, ASS, IAFS, AFS, NADS, NODS */); -} - -struct Q_AUTOTEST_EXPORT QScriptItem -{ - inline QScriptItem() - : position(0), - num_glyphs(0), descent(-1), ascent(-1), leading(-1), width(-1), - glyph_data_offset(0) {} - inline QScriptItem(int p, const QScriptAnalysis &a) - : position(p), analysis(a), - num_glyphs(0), descent(-1), ascent(-1), leading(-1), width(-1), - glyph_data_offset(0) {} - - int position; - QScriptAnalysis analysis; - unsigned short num_glyphs; - QFixed descent; - QFixed ascent; - QFixed leading; - QFixed width; - int glyph_data_offset; - QFixed height() const { return ascent + descent + 1; } -}; - - -Q_DECLARE_TYPEINFO(QScriptItem, Q_MOVABLE_TYPE); - -typedef QVector<QScriptItem> QScriptItemArray; - -struct Q_AUTOTEST_EXPORT QScriptLine -{ - // created and filled in QTextLine::layout_helper - QScriptLine() - : from(0), length(0), - justified(0), gridfitted(0), - hasTrailingSpaces(0), leadingIncluded(0) {} - QFixed descent; - QFixed ascent; - QFixed leading; - QFixed x; - QFixed y; - QFixed width; - QFixed textWidth; - QFixed textAdvance; - int from; - signed int length : 29; - mutable uint justified : 1; - mutable uint gridfitted : 1; - uint hasTrailingSpaces : 1; - uint leadingIncluded : 1; - QFixed height() const { return (ascent + descent).ceil() + 1 - + (leadingIncluded? qMax(QFixed(),leading) : QFixed()); } - QFixed base() const { return ascent - + (leadingIncluded ? qMax(QFixed(),leading) : QFixed()); } - void setDefaultHeight(QTextEngine *eng); - void operator+=(const QScriptLine &other); -}; -Q_DECLARE_TYPEINFO(QScriptLine, Q_PRIMITIVE_TYPE); - - -inline void QScriptLine::operator+=(const QScriptLine &other) -{ - leading= qMax(leading + ascent, other.leading + other.ascent) - qMax(ascent, other.ascent); - descent = qMax(descent, other.descent); - ascent = qMax(ascent, other.ascent); - textWidth += other.textWidth; - length += other.length; -} - -typedef QVector<QScriptLine> QScriptLineArray; - -class QFontPrivate; -class QTextFormatCollection; - -class Q_GUI_EXPORT QTextEngine { -public: - enum LayoutState { - LayoutEmpty, - InLayout, - LayoutFailed, - }; - struct LayoutData { - LayoutData(const QString &str, void **stack_memory, int mem_size); - LayoutData(); - ~LayoutData(); - mutable QScriptItemArray items; - int allocated; - int available_glyphs; - void **memory; - unsigned short *logClustersPtr; - QGlyphLayout glyphLayout; - mutable int used; - uint hasBidi : 1; - uint layoutState : 2; - uint memory_on_stack : 1; - bool haveCharAttributes; - QString string; - bool reallocate(int totalGlyphs); - }; - - QTextEngine(LayoutData *data); - QTextEngine(); - QTextEngine(const QString &str, const QFont &f); - ~QTextEngine(); - - enum Mode { - WidthOnly = 0x07 - }; - - // keep in sync with QAbstractFontEngine::TextShapingFlag!! - enum ShaperFlag { - RightToLeft = 0x0001, - DesignMetrics = 0x0002, - GlyphIndicesOnly = 0x0004 - }; - Q_DECLARE_FLAGS(ShaperFlags, ShaperFlag) - - void invalidate(); - void clearLineData(); - - void validate() const; - void itemize() const; - - bool isRightToLeft() const; - static void bidiReorder(int numRuns, const quint8 *levels, int *visualOrder); - - const HB_CharAttributes *attributes() const; - - void shape(int item) const; - - void justify(const QScriptLine &si); - - QFixed width(int charFrom, int numChars) const; - glyph_metrics_t boundingBox(int from, int len) const; - glyph_metrics_t tightBoundingBox(int from, int len) const; - - int length(int item) const { - const QScriptItem &si = layoutData->items[item]; - int from = si.position; - item++; - return (item < layoutData->items.size() ? layoutData->items[item].position : layoutData->string.length()) - from; - } - int length(const QScriptItem *si) const { - int end; - if (si + 1 < layoutData->items.constData()+ layoutData->items.size()) - end = (si+1)->position; - else - end = layoutData->string.length(); - return end - si->position; - } - - QFontEngine *fontEngine(const QScriptItem &si, QFixed *ascent = 0, QFixed *descent = 0, QFixed *leading = 0) const; - QFont font(const QScriptItem &si) const; - inline QFont font() const { return fnt; } - - /** - * Returns a pointer to an array of log clusters, offset at the script item. - * Each item in the array is a unsigned short. For each character in the original string there is an entry in the table - * so there is a one to one correlation in indexes between the original text and the index in the logcluster. - * The value of each item is the position in the glyphs array. Multiple similar pointers in the logclusters array imply - * that one glyph is used for more than one character. - * \sa glyphs() - */ - inline unsigned short *logClusters(const QScriptItem *si) const - { return layoutData->logClustersPtr+si->position; } - /** - * Returns an array of QGlyphLayout items, offset at the script item. - * Each item in the array matches one glyph in the text, storing the advance, position etc. - * The returned item's length equals to the number of available glyphs. This may be more - * than what was actually shaped. - * \sa logClusters() - */ - inline QGlyphLayout availableGlyphs(const QScriptItem *si) const { - return layoutData->glyphLayout.mid(si->glyph_data_offset); - } - /** - * Returns an array of QGlyphLayout items, offset at the script item. - * Each item in the array matches one glyph in the text, storing the advance, position etc. - * The returned item's length equals to the number of shaped glyphs. - * \sa logClusters() - */ - inline QGlyphLayout shapedGlyphs(const QScriptItem *si) const { - return layoutData->glyphLayout.mid(si->glyph_data_offset, si->num_glyphs); - } - - inline bool ensureSpace(int nGlyphs) const { - if (layoutData->glyphLayout.numGlyphs - layoutData->used < nGlyphs) - return layoutData->reallocate((((layoutData->used + nGlyphs)*3/2 + 15) >> 4) << 4); - return true; - } - - void freeMemory(); - - int findItem(int strPos) const; - QTextFormatCollection *formats() const; - QTextCharFormat format(const QScriptItem *si) const; - QAbstractTextDocumentLayout *docLayout() const; - int formatIndex(const QScriptItem *si) const; - - /// returns the width of tab at index (in the tabs array) with the tab-start at position x - QFixed calculateTabWidth(int index, QFixed x) const; - - mutable QScriptLineArray lines; - - QString text; - QFont fnt; - QTextBlock block; - - QTextOption option; - - QFixed minWidth; - QFixed maxWidth; - QPointF position; - uint ignoreBidi : 1; - uint cacheGlyphs : 1; - uint stackEngine : 1; - uint forceJustification : 1; - - int *underlinePositions; - - mutable LayoutData *layoutData; - - inline bool hasFormats() const { return (block.docHandle() || specialData); } - - struct SpecialData { - int preeditPosition; - QString preeditText; - QList<QTextLayout::FormatRange> addFormats; - QVector<int> addFormatIndices; - QVector<int> resolvedFormatIndices; - }; - SpecialData *specialData; - - bool atWordSeparator(int position) const; - bool atSpace(int position) const; - void indexAdditionalFormats(); - - QString elidedText(Qt::TextElideMode mode, const QFixed &width, int flags = 0) const; - - void shapeLine(const QScriptLine &line); - -private: - void setBoundary(int strPos) const; - void addRequiredBoundaries() const; - void shapeText(int item) const; - void shapeTextWithHarfbuzz(int item) const; -#if defined(Q_WS_WINCE) - void shapeTextWithCE(int item) const; -#endif -#if defined(Q_WS_MAC) - void shapeTextMac(int item) const; -#endif - void splitItem(int item, int pos) const; - - void resolveAdditionalFormats() const; -}; - -class QStackTextEngine : public QTextEngine { -public: - enum { MemSize = 256*40/sizeof(void *) }; - QStackTextEngine(const QString &string, const QFont &f); - LayoutData _layoutData; - void *_memory[MemSize]; -}; - - -Q_DECLARE_OPERATORS_FOR_FLAGS(QTextEngine::ShaperFlags) - -QT_END_NAMESPACE - -#endif // QTEXTENGINE_P_H |