qtextdocumentlayout.cpp File Reference

#include "qtextdocumentlayout_p.h"
#include "qtextdocument_p.h"
#include "qtextimagehandler_p.h"
#include "qtexttable.h"
#include "qtextlist.h"
#include "qtextengine_p.h"
#include "private/qcssutil_p.h"
#include "qabstracttextdocumentlayout_p.h"
#include "qcssparser_p.h"
#include <qpainter.h>
#include <qmath.h>
#include <qrect.h>
#include <qpalette.h>
#include <qdebug.h>
#include <qvarlengtharray.h>
#include <limits.h>
#include <qstyle.h>
#include <qbasictimer.h>
#include "private/qfunctions_p.h"
#include "moc_qtextdocumentlayout_p.cpp"

Go to the source code of this file.

Classes
struct	QCheckPoint
class	QTextDocumentLayoutPrivate
class	QTextFrameData
struct	QTextLayoutStruct
class	QTextTableData

Macros
#define	DEC_INDENT   do {} while(0)
#define	INC_INDENT   do {} while(0)
#define	LDEBUG   if(0) qDebug()

Functions
static void	adjustContextSelectionsForCell (QAbstractTextDocumentLayout::PaintContext &cell_context, const QTextTableCell &cell, int r, int c, const int *selectedTableCells)
static QTextFrameData *	createData (QTextFrame *f)
static QTextFrameData *	data (QTextFrame *f)
static void	fillBackground (QPainter *p, const QRectF &rect, QBrush brush, const QPointF &origin, QRectF gradientRect=QRectF())
static QFixed	firstChildPos (const QTextFrame *f)
static QFixed	flowPosition (const QTextFrame::iterator it)
static void	getLineHeightParams (const QTextBlockFormat &blockFormat, const QTextLine &line, qreal scaling, QFixed *lineAdjustment, QFixed *lineBreakHeight, QFixed *lineHeight)
static bool	isEmptyBlockAfterTable (const QTextBlock &block, const QTextFrame *previousFrame)
static bool	isEmptyBlockBeforeTable (const QTextBlock &block, const QTextBlockFormat &format, const QTextFrame::Iterator &nextIt)
static bool	isEmptyBlockBeforeTable (QTextFrame::Iterator it)
static bool	isFrameFromInlineObject (QTextFrame *f)
static bool	isLineSeparatorBlockAfterTable (const QTextBlock &block, const QTextFrame *previousFrame)
static void	markFrames (QTextFrame *current, int from, int oldLength, int length)
Q_STATIC_GLOBAL_OPERATOR bool	operator< (const QCheckPoint &checkPoint, QFixed y)
Q_STATIC_GLOBAL_OPERATOR bool	operator< (const QCheckPoint &checkPoint, int pos)
	Q_DECLARE_TYPEINFO (QCheckPoint, Q_PRIMITIVE_TYPE)

Macro Definition Documentation

DEC_INDENT

#define DEC_INDENT   do {} while(0)

Definition at line 73 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::hitTest().

INC_INDENT

#define INC_INDENT   do {} while(0)

Definition at line 72 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::hitTest().

LDEBUG

#define LDEBUG   if(0) qDebug()

Definition at line 71 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::layoutBlock(), QTextDocumentLayoutPrivate::layoutCell(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutFrame(), and QTextDocumentLayoutPrivate::layoutTable().

Function Documentation

adjustContextSelectionsForCell()

static void adjustContextSelectionsForCell ( QAbstractTextDocumentLayout::PaintContext &  cell_context, const QTextTableCell &  cell, int  r, int  c, const int *  selectedTableCells  )

static

Definition at line 896 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::drawFrame().

{
    for (int i = 0; i < cell_context.selections.size(); ++i) {
        int row_start = selectedTableCells[i * 4];
        int col_start = selectedTableCells[i * 4 + 1];
        int num_rows = selectedTableCells[i * 4 + 2];
        int num_cols = selectedTableCells[i * 4 + 3];

        if (row_start != -1) {
            if (r >= row_start && r < row_start + num_rows
                && c >= col_start && c < col_start + num_cols)
            {
                int firstPosition = cell.firstPosition();
                int lastPosition = cell.lastPosition();

                // make sure empty cells are still selected
                if (firstPosition == lastPosition)
                    ++lastPosition;

                cell_context.selections[i].cursor.setPosition(firstPosition);
                cell_context.selections[i].cursor.setPosition(lastPosition, QTextCursor::KeepAnchor);
            } else {
                cell_context.selections[i].cursor.clearSelection();
            }
        }

        // FullWidthSelection is not useful for tables
        cell_context.selections[i].format.clearProperty(QTextFormat::FullWidthSelection);
    }
}

createData()

static QTextFrameData* createData ( QTextFrame *  f )

static

Definition at line 237 of file qtextdocumentlayout.cpp.

Referenced by data().

{
    QTextFrameData *data;
    if (qobject_cast<QTextTable *>(f))
        data = new QTextTableData;
    else
        data = new QTextFrameData;
    f->setLayoutData(data);
    return data;
}

data()

static QTextFrameData* data ( QTextFrame *  f )

inlinestatic

Definition at line 248 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayout::blockBoundingRect(), createData(), QTextDocumentLayout::doLayout(), QTextDocumentLayout::draw(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawFrame(), QTextDocumentLayout::dynamicDocumentSize(), QTextDocumentLayoutPrivate::findY(), QTextDocumentLayoutPrivate::floatMargins(), flowPosition(), QTextDocumentLayoutPrivate::frameBoundingRectInternal(), QTextDocumentLayoutPrivate::frameIteratorForYPosition(), QTextDocumentLayoutPrivate::hitTest(), QTextDocumentLayoutPrivate::layoutCell(), QTextDocumentLayoutPrivate::layoutFlow(), QTextDocumentLayoutPrivate::layoutFrame(), QTextDocumentLayoutPrivate::layoutTable(), markFrames(), QTextDocumentLayoutPrivate::positionFloat(), and QTextDocumentLayout::resizeInlineObject().

{
    QTextFrameData *data = static_cast<QTextFrameData *>(f->layoutData());
    if (!data)
        data = createData(f);
    return data;
}

fillBackground()

static void fillBackground ( QPainter *  p, const QRectF &  rect, QBrush  brush, const QPointF &  origin, QRectF  gradientRect = QRectF()  )

static

Definition at line 402 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QTextDocumentLayoutPrivate::drawTableCell(), and QGraphicsWidget::paintWindowFrame().

{
    p->save();
    if (brush.style() >= Qt::LinearGradientPattern && brush.style() <= Qt::ConicalGradientPattern) {
        if (!gradientRect.isNull()) {
            QTransform m;
            m.translate(gradientRect.left(), gradientRect.top());
            m.scale(gradientRect.width(), gradientRect.height());
            brush.setTransform(m);
            const_cast<QGradient *>(brush.gradient())->setCoordinateMode(QGradient::LogicalMode);
        }
    } else {
        p->setBrushOrigin(origin);
    }
    p->fillRect(rect, brush);
    p->restore();
}

firstChildPos()

static QFixed firstChildPos ( const QTextFrame *  f )

static

Definition at line 1494 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::layoutFlow().

{
    return flowPosition(f->begin());
}

flowPosition()

static QFixed flowPosition ( const QTextFrame::iterator  it )

static

Definition at line 1477 of file qtextdocumentlayout.cpp.

Referenced by QIconModeViewBase::doDynamicLayout(), QListModeViewBase::doStaticLayout(), firstChildPos(), and QTextDocumentLayoutPrivate::layoutTable().

{
    if (it.atEnd())
        return 0;

    if (it.currentFrame()) {
        return data(it.currentFrame())->position.y;
    } else {
        QTextBlock block = it.currentBlock();
        QTextLayout *layout = block.layout();
        if (layout->lineCount() == 0)
            return QFixed::fromReal(layout->position().y());
        else
            return QFixed::fromReal(layout->position().y() + layout->lineAt(0).y());
    }
}

getLineHeightParams()

static void getLineHeightParams ( const QTextBlockFormat &  blockFormat, const QTextLine &  line, qreal  scaling, QFixed *  lineAdjustment, QFixed *  lineBreakHeight, QFixed *  lineHeight  )

inlinestatic

Definition at line 2520 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::layoutBlock().

{
    *lineHeight = QFixed::fromReal(blockFormat.lineHeight(line.height(), scaling));

    if (blockFormat.lineHeightType() == QTextBlockFormat::FixedHeight || blockFormat.lineHeightType() == QTextBlockFormat::MinimumHeight) {
        *lineBreakHeight = *lineHeight;
        if (blockFormat.lineHeightType() == QTextBlockFormat::FixedHeight)
            *lineAdjustment = QFixed::fromReal(line.ascent() + qMax(line.leading(), qreal(0.0))) - ((*lineHeight * 4) / 5);
        else
            *lineAdjustment = QFixed::fromReal(line.height()) - *lineHeight;
    }
    else {
        *lineBreakHeight = QFixed::fromReal(line.height());
        *lineAdjustment = 0;
    }
}

isEmptyBlockAfterTable()

static bool isEmptyBlockAfterTable ( const QTextBlock &  block, const QTextFrame *  previousFrame  )

inlinestatic

Definition at line 307 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::drawFlow(), and QTextDocumentLayoutPrivate::layoutFlow().

{
    return qobject_cast<const QTextTable *>(previousFrame)
           && block.isValid()
           && block.length() == 1
           && previousFrame->lastPosition() == block.position() - 1
           ;
}

isEmptyBlockBeforeTable() [1/2]

static bool isEmptyBlockBeforeTable ( const QTextBlock &  block, const QTextBlockFormat &  format, const QTextFrame::Iterator &  nextIt  )

inlinestatic

Definition at line 286 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::drawFlow(), QTextDocumentLayoutPrivate::hitTest(), isEmptyBlockBeforeTable(), and QTextDocumentLayoutPrivate::layoutFlow().

{
    return !nextIt.atEnd()
           && qobject_cast<QTextTable *>(nextIt.currentFrame())
           && block.isValid()
           && block.length() == 1
           && !format.hasProperty(QTextFormat::BlockTrailingHorizontalRulerWidth)
           && !format.hasProperty(QTextFormat::BackgroundBrush)
           && nextIt.currentFrame()->firstPosition() == block.position() + 1
           ;
}

isEmptyBlockBeforeTable() [2/2]

static bool isEmptyBlockBeforeTable ( QTextFrame::Iterator  it )

inlinestatic

Definition at line 298 of file qtextdocumentlayout.cpp.

{
    QTextFrame::Iterator next = it; ++next;
    if (it.currentFrame())
        return false;
    QTextBlock block = it.currentBlock();
    return isEmptyBlockBeforeTable(block, block.blockFormat(), next);
}

isFrameFromInlineObject()

static bool isFrameFromInlineObject ( QTextFrame *  f )

static

Definition at line 256 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::drawFlow(), QTextDocumentLayoutPrivate::hitTest(), and QTextDocumentLayoutPrivate::layoutFrame().

{
    return f->firstPosition() > f->lastPosition();
}

isLineSeparatorBlockAfterTable()

static bool isLineSeparatorBlockAfterTable ( const QTextBlock &  block, const QTextFrame *  previousFrame  )

inlinestatic

Definition at line 316 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayoutPrivate::layoutFlow().

{
    return qobject_cast<const QTextTable *>(previousFrame)
           && block.isValid()
           && block.length() > 1
           && block.text().at(0) == QChar::LineSeparator
           && previousFrame->lastPosition() == block.position() - 1
           ;
}

markFrames()

static void markFrames ( QTextFrame *  current, int  from, int  oldLength, int  length  )

static

Definition at line 2847 of file qtextdocumentlayout.cpp.

Referenced by QTextDocumentLayout::doLayout().

{
    int end = qMax(oldLength, length) + from;

    if (current->firstPosition() >= end || current->lastPosition() < from)
        return;

    QTextFrameData *fd = data(current);
    for (int i = 0; i < fd->floats.size(); ++i) {
        QTextFrame *f = fd->floats[i];
        if (!f) {
            // float got removed in editing operation
            fd->floats.removeAt(i);
            --i;
        }
    }

    fd->layoutDirty = true;
    fd->sizeDirty = true;

//     qDebug("    marking frame (%d--%d) as dirty", current->firstPosition(), current->lastPosition());
    QList<QTextFrame *> children = current->childFrames();
    for (int i = 0; i < children.size(); ++i)
        markFrames(children.at(i), from, oldLength, length);
}

operator<() [1/2]

Q_STATIC_GLOBAL_OPERATOR bool operator<	(	const QCheckPoint &	checkPoint,
		QFixed	y
	)

Definition at line 392 of file qtextdocumentlayout.cpp.

{
    return checkPoint.y < y;
}

operator<() [2/2]

Q_STATIC_GLOBAL_OPERATOR bool operator<	(	const QCheckPoint &	checkPoint,
		int	pos
	)

Definition at line 397 of file qtextdocumentlayout.cpp.

{
    return checkPoint.positionInFrame < pos;
}

Q_DECLARE_TYPEINFO()

Q_DECLARE_TYPEINFO	(	QCheckPoint	,
		Q_PRIMITIVE_TYPE
	)