qglyphrun.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qglobal.h"
 
#if !defined(QT_NO_RAWFONT)
 
#include "qglyphrun.h"
#include "qglyphrun_p.h"
#include <qdebug.h>
 
QT_BEGIN_NAMESPACE
 
QGlyphRun::QGlyphRun() : d(new QGlyphRunPrivate)
{
}
 
QGlyphRun::QGlyphRun(const QGlyphRun &other)
{
    d = other.d;
}
 
QGlyphRun::~QGlyphRun()
{
    // Required for QExplicitlySharedDataPointer
}
 
void QGlyphRun::detach()
{
    if (d->ref.loadRelaxed() != 1)
        d.detach();
}
 
QGlyphRun &QGlyphRun::operator=(const QGlyphRun &other)
{
    d = other.d;
    return *this;
}
 
bool QGlyphRun::operator==(const QGlyphRun &other) const
{
    if (d == other.d)
        return true;
 
    if ((d->glyphIndexDataSize != other.d->glyphIndexDataSize)
     || (d->glyphPositionDataSize != other.d->glyphPositionDataSize)) {
        return false;
    }
 
    if (d->glyphIndexData != other.d->glyphIndexData) {
        for (int i = 0; i < d->glyphIndexDataSize; ++i) {
            if (d->glyphIndexData[i] != other.d->glyphIndexData[i])
               return false;
        }
    }
    if (d->glyphPositionData != other.d->glyphPositionData) {
        for (int i = 0; i < d->glyphPositionDataSize; ++i) {
            if (d->glyphPositionData[i] != other.d->glyphPositionData[i])
               return false;
        }
    }
 
    return (d->flags == other.d->flags && d->rawFont == other.d->rawFont);
}
 
QRawFont QGlyphRun::rawFont() const
{
    return d->rawFont;
}
 
void QGlyphRun::setRawFont(const QRawFont &rawFont)
{
    detach();
    d->rawFont = rawFont;
}
 
QList<quint32> QGlyphRun::glyphIndexes() const
{
    if (d->glyphIndexes.constData() == d->glyphIndexData) {
        return d->glyphIndexes;
    } else {
        QList<quint32> indexes(d->glyphIndexDataSize);
        memcpy(indexes.data(), d->glyphIndexData, d->glyphIndexDataSize * sizeof(quint32));
        return indexes;
    }
}
 
void QGlyphRun::setGlyphIndexes(const QList<quint32> &glyphIndexes)
{
    detach();
    d->glyphIndexes = glyphIndexes; // Keep a reference to the QList to avoid copying
    d->glyphIndexData = glyphIndexes.constData();
    d->glyphIndexDataSize = glyphIndexes.size();
}
 
QList<QPointF> QGlyphRun::positions() const
{
    if (d->glyphPositions.constData() == d->glyphPositionData) {
        return d->glyphPositions;
    } else {
        QList<QPointF> glyphPositions(d->glyphPositionDataSize);
        memcpy(glyphPositions.data(), d->glyphPositionData,
                 d->glyphPositionDataSize * sizeof(QPointF));
        return glyphPositions;
    }
}
 
void QGlyphRun::setPositions(const QList<QPointF> &positions)
{
    detach();
    d->glyphPositions = positions; // Keep a reference to the list to avoid copying
    d->glyphPositionData = positions.constData();
    d->glyphPositionDataSize = positions.size();
}
 
void QGlyphRun::clear()
{
    detach();
    d->rawFont = QRawFont();
    d->flags = { };
 
    setPositions(QList<QPointF>());
    setGlyphIndexes(QList<quint32>());
}
 
void QGlyphRun::setRawData(const quint32 *glyphIndexArray, const QPointF *glyphPositionArray,
                           int size)
{
    detach();
    d->glyphIndexes.clear();
    d->glyphPositions.clear();
 
    d->glyphIndexData = glyphIndexArray;
    d->glyphPositionData = glyphPositionArray;
    d->glyphIndexDataSize = d->glyphPositionDataSize = size;
}
 
bool QGlyphRun::overline() const
{
    return d->flags & Overline;
}
 
void QGlyphRun::setOverline(bool overline)
{
    setFlag(Overline, overline);
}
 
bool QGlyphRun::underline() const
{
    return d->flags & Underline;
}
 
void QGlyphRun::setUnderline(bool underline)
{
    setFlag(Underline, underline);
}
 
bool QGlyphRun::strikeOut() const
{
    return d->flags & StrikeOut;
}
 
void QGlyphRun::setStrikeOut(bool strikeOut)
{
    setFlag(StrikeOut, strikeOut);
}
 
bool QGlyphRun::isRightToLeft() const
{
    return d->flags & RightToLeft;
}
 
void QGlyphRun::setRightToLeft(bool rightToLeft)
{
    setFlag(RightToLeft, rightToLeft);
}
 
QGlyphRun::GlyphRunFlags QGlyphRun::flags() const
{
    return d->flags;
}
 
void QGlyphRun::setFlag(GlyphRunFlag flag, bool enabled)
{
    if (d->flags.testFlag(flag) == enabled)
        return;
 
    detach();
    d->flags.setFlag(flag, enabled);
}
 
void QGlyphRun::setFlags(GlyphRunFlags flags)
{
    if (d->flags == flags)
        return;
 
    detach();
    d->flags = flags;
}
 
void QGlyphRun::setBoundingRect(const QRectF &boundingRect)
{
    detach();
    d->boundingRect = boundingRect;
}
 
QRectF QGlyphRun::boundingRect() const
{
    if (!d->boundingRect.isNull() || !d->rawFont.isValid())
        return d->boundingRect;
 
    qreal minX, minY, maxX, maxY;
    minX = minY = maxX = maxY = 0;
 
    for (int i = 0, n = qMin(d->glyphIndexDataSize, d->glyphPositionDataSize); i < n; ++i) {
        QRectF glyphRect = d->rawFont.boundingRect(d->glyphIndexData[i]);
        glyphRect.translate(d->glyphPositionData[i]);
 
        if (i == 0) {
            minX = glyphRect.left();
            minY = glyphRect.top();
            maxX = glyphRect.right();
            maxY = glyphRect.bottom();
        } else {
            minX = qMin(glyphRect.left(), minX);
            minY = qMin(glyphRect.top(), minY);
            maxX = qMax(glyphRect.right(),maxX);
            maxY = qMax(glyphRect.bottom(), maxY);
        }
    }
 
    return QRectF(QPointF(minX, minY), QPointF(maxX, maxY));
}
 
bool QGlyphRun::isEmpty() const
{
    return d->glyphIndexDataSize == 0
            && d->glyphPositionDataSize == 0
            && d->stringIndexes.isEmpty()
            && d->sourceString.isEmpty();
}
 
QList<qsizetype> QGlyphRun::stringIndexes() const
{
    return d->stringIndexes;
}
 
void QGlyphRun::setStringIndexes(const QList<qsizetype> &stringIndexes)
{
    detach();
    d->stringIndexes = stringIndexes;
}
 
QString QGlyphRun::sourceString() const
{
    return d->sourceString;
}
 
void QGlyphRun::setSourceString(const QString &sourceString)
{
    detach();
    d->sourceString = sourceString;
}
 
QT_END_NAMESPACE
 
#endif // QT_NO_RAWFONT