diff options
Diffstat (limited to 'src/declarative/graphicsitems/qdeclarativetext.cpp')
| -rw-r--r-- | src/declarative/graphicsitems/qdeclarativetext.cpp | 280 |
1 files changed, 153 insertions, 127 deletions
diff --git a/src/declarative/graphicsitems/qdeclarativetext.cpp b/src/declarative/graphicsitems/qdeclarativetext.cpp index 049169e..fdc1a71 100644 --- a/src/declarative/graphicsitems/qdeclarativetext.cpp +++ b/src/declarative/graphicsitems/qdeclarativetext.cpp @@ -50,7 +50,6 @@ #include <QTextLayout> #include <QTextLine> #include <QTextDocument> -#include <QTextCursor> #include <QGraphicsSceneMouseEvent> #include <QPainter> #include <QAbstractTextDocumentLayout> @@ -97,13 +96,12 @@ DEFINE_BOOL_CONFIG_OPTION(enableImageCache, QML_ENABLE_TEXT_IMAGE_CACHE); QString QDeclarativeTextPrivate::elideChar = QString(0x2026); QDeclarativeTextPrivate::QDeclarativeTextPrivate() -: color((QRgb)0), style(QDeclarativeText::Normal), hAlign(QDeclarativeText::AlignLeft), +: color((QRgb)0), style(QDeclarativeText::Normal), hAlign(QDeclarativeText::AlignLeft), vAlign(QDeclarativeText::AlignTop), elideMode(QDeclarativeText::ElideNone), format(QDeclarativeText::AutoText), wrapMode(QDeclarativeText::NoWrap), lineHeight(1), - lineHeightMode(QDeclarativeText::ProportionalHeight), - lineCount(1), truncated(false), maximumLineCount(INT_MAX), + lineHeightMode(QDeclarativeText::ProportionalHeight), lineCount(1), truncated(false), maximumLineCount(INT_MAX), maximumLineCountValid(false), imageCacheDirty(true), updateOnComponentComplete(true), richText(false), singleline(false), - cacheAllTextAsImage(true), internalWidthUpdate(false), requireImplicitWidth(false), naturalWidth(0), doc(0) + cacheAllTextAsImage(true), internalWidthUpdate(false), requireImplicitWidth(false), hAlignImplicit(true), rightToLeftText(false), naturalWidth(0), doc(0) { cacheAllTextAsImage = enableImageCache(); QGraphicsItemPrivate::acceptedMouseButtons = Qt::LeftButton; @@ -283,18 +281,26 @@ void QDeclarativeTextPrivate::updateSize() //setup instance of QTextLayout for all cases other than richtext if (!richText) { - size = setupTextLayout(); - if (layedOutTextSize != size) { + QRect textRect = setupTextLayout(); + if (layedOutTextRect.size() != textRect.size()) q->prepareGeometryChange(); - layedOutTextSize = size; - } + layedOutTextRect = textRect; + size = textRect.size(); dy -= size.height(); } else { singleline = false; // richtext can't elide or be optimized for single-line case ensureDoc(); doc->setDefaultFont(font); + + QDeclarativeText::HAlignment horizontalAlignment = q->effectiveHAlign(); + if (rightToLeftText) { + if (horizontalAlignment == QDeclarativeText::AlignLeft) + horizontalAlignment = QDeclarativeText::AlignRight; + else if (horizontalAlignment == QDeclarativeText::AlignRight) + horizontalAlignment = QDeclarativeText::AlignLeft; + } QTextOption option; - option.setAlignment((Qt::Alignment)int(hAlign | vAlign)); + option.setAlignment((Qt::Alignment)int(horizontalAlignment | vAlign)); option.setWrapMode(QTextOption::WrapMode(wrapMode)); doc->setDefaultTextOption(option); if (requireImplicitWidth && q->widthValid()) { @@ -307,9 +313,9 @@ void QDeclarativeTextPrivate::updateSize() doc->setTextWidth(doc->idealWidth()); // ### Text does not align if width is not set (QTextDoc bug) dy -= (int)doc->size().height(); QSize dsize = doc->size().toSize(); - if (dsize != layedOutTextSize) { + if (dsize != layedOutTextRect.size()) { q->prepareGeometryChange(); - layedOutTextSize = dsize; + layedOutTextRect = QRect(QPoint(0,0), dsize); } size = QSize(int(doc->idealWidth()),dsize.height()); } @@ -344,45 +350,29 @@ void QDeclarativeTextPrivate::updateSize() Returns the size of the final text. This can be used to position the text vertically (the text is already absolutely positioned horizontally). */ -QSize QDeclarativeTextPrivate::setupTextLayout() +QRect QDeclarativeTextPrivate::setupTextLayout() { // ### text layout handling should be profiled and optimized as needed // what about QStackTextEngine engine(tmp, d->font.font()); QTextLayout textLayout(&engine); Q_Q(QDeclarativeText); layout.setCacheEnabled(true); - qreal height = 0; - qreal widthUsed = 0; qreal lineWidth = 0; - int visibleTextLength = 0; int visibleCount = 0; //set manual width - if ((wrapMode != QDeclarativeText::NoWrap || elideMode != QDeclarativeText::ElideNone) && q->widthValid()) + if (q->widthValid()) lineWidth = q->width(); QTextOption textOption = layout.textOption(); - if (hAlign == QDeclarativeText::AlignJustify) - textOption.setAlignment(Qt::Alignment(hAlign)); + textOption.setAlignment(Qt::Alignment(q->effectiveHAlign())); textOption.setWrapMode(QTextOption::WrapMode(wrapMode)); layout.setTextOption(textOption); - QDeclarativeText::HAlignment hAlignment = hAlign; - if(text.isRightToLeft()) { - if ((hAlign == QDeclarativeText::AlignLeft) || (hAlign == QDeclarativeText::AlignJustify)) { - hAlignment = QDeclarativeText::AlignRight; - } else if (hAlign == QDeclarativeText::AlignRight) { - hAlignment = QDeclarativeText::AlignLeft; - } else { - hAlignment = hAlign; - } - } - bool elideText = false; bool truncate = false; QFontMetrics fm(layout.font()); - qreal elideWidth = fm.width(elideChar); elidePos = QPointF(); if (requireImplicitWidth && q->widthValid()) { @@ -394,47 +384,47 @@ QSize QDeclarativeTextPrivate::setupTextLayout() break; } layout.endLayout(); - naturalWidth = 0; + QRectF br; for (int i = 0; i < layout.lineCount(); ++i) { QTextLine line = layout.lineAt(i); - naturalWidth = qMax(naturalWidth, line.naturalTextWidth()); + br = br.united(line.naturalTextRect()); } + naturalWidth = br.width(); } if (maximumLineCountValid) { layout.beginLayout(); if (!lineWidth) lineWidth = INT_MAX; - int y = 0; int linesLeft = maximumLineCount; + int visibleTextLength = 0; while (linesLeft > 0) { QTextLine line = layout.createLine(); if (!line.isValid()) break; visibleCount++; - line.setLineWidth(lineWidth); + if (lineWidth) + line.setLineWidth(lineWidth); visibleTextLength += line.textLength(); if (--linesLeft == 0) { if (visibleTextLength < text.length()) { truncate = true; if (elideMode==QDeclarativeText::ElideRight && q->widthValid()) { + qreal elideWidth = fm.width(elideChar); // Need to correct for alignment line.setLineWidth(lineWidth-elideWidth); - int x = line.naturalTextWidth(); - if (hAlignment == QDeclarativeText::AlignRight) { - x = q->width()-elideWidth; - } else if (hAlignment == QDeclarativeText::AlignHCenter) { - x = (q->width()+line.naturalTextWidth()-elideWidth)/2; + if (layout.text().mid(line.textStart(), line.textLength()).isRightToLeft()) { + line.setPosition(QPointF(line.position().x() + elideWidth, line.position().y())); + elidePos.setX(line.naturalTextRect().left() - elideWidth); + } else { + elidePos.setX(line.naturalTextRect().right()); } - elidePos = QPointF(x, y + fm.ascent()); elideText = true; } } } - - y += line.height(); } layout.endLayout(); @@ -456,36 +446,23 @@ QSize QDeclarativeTextPrivate::setupTextLayout() layout.endLayout(); } + qreal height = 0; + QRectF br; for (int i = 0; i < layout.lineCount(); ++i) { QTextLine line = layout.lineAt(i); - widthUsed = qMax(widthUsed, line.naturalTextWidth()); + // set line spacing + line.setPosition(QPointF(line.position().x(), height)); + if (elideText && i == layout.lineCount()-1) { + elidePos.setY(height + fm.ascent()); + br = br.united(QRectF(elidePos, QSizeF(fm.width(elideChar), fm.ascent()))); + } + br = br.united(line.naturalTextRect()); + height += (lineHeightMode == QDeclarativeText::FixedHeight) ? lineHeight : line.height() * lineHeight; } + br.setHeight(height); - qreal layoutWidth = q->widthValid() ? q->width() : widthUsed; if (!q->widthValid()) - naturalWidth = layoutWidth; - - qreal x = 0; - for (int i = 0; i < layout.lineCount(); ++i) { - QTextLine line = layout.lineAt(i); - line.setPosition(QPointF(0, height)); - height += (lineHeightMode == QDeclarativeText::FixedHeight) ? lineHeight : line.height() * lineHeight; - - if (!cacheAllTextAsImage) { - if ((hAlignment == QDeclarativeText::AlignLeft) || (hAlignment == QDeclarativeText::AlignJustify)) { - x = 0; - } else if (hAlignment == QDeclarativeText::AlignRight) { - x = layoutWidth - line.naturalTextWidth(); - if (elideText && i == layout.lineCount()-1) - x -= elideWidth; // Correct for when eliding multilines - } else if (hAlignment == QDeclarativeText::AlignHCenter) { - x = (layoutWidth - line.naturalTextWidth()) / 2; - if (elideText && i == layout.lineCount()-1) - x -= elideWidth/2; // Correct for when eliding multilines - } - line.setPosition(QPointF(x, line.y())); - } - } + naturalWidth = br.width(); //Update the number of visible lines if (lineCount != visibleCount) { @@ -493,7 +470,7 @@ QSize QDeclarativeTextPrivate::setupTextLayout() emit q->lineCountChanged(); } - return QSize(qCeil(widthUsed), qCeil(height)); + return QRect(qRound(br.x()), qRound(br.y()), qCeil(br.width()), qCeil(br.height())); } /*! @@ -503,21 +480,7 @@ QSize QDeclarativeTextPrivate::setupTextLayout() QPixmap QDeclarativeTextPrivate::textLayoutImage(bool drawStyle) { //do layout - QSize size = layedOutTextSize; - - qreal x = 0; - for (int i = 0; i < layout.lineCount(); ++i) { - QTextLine line = layout.lineAt(i); - if ((hAlign == QDeclarativeText::AlignLeft) || (hAlign == QDeclarativeText::AlignJustify)) { - x = 0; - } else if (hAlign == QDeclarativeText::AlignRight) { - x = size.width() - line.naturalTextWidth(); - } else if (hAlign == QDeclarativeText::AlignHCenter) { - x = (size.width() - line.naturalTextWidth()) / 2; - } - line.setPosition(QPointF(x, line.y())); - } - + QSize size = layedOutTextRect.size(); //paint text QPixmap img(size); if (!size.isEmpty()) { @@ -530,7 +493,7 @@ QPixmap QDeclarativeTextPrivate::textLayoutImage(bool drawStyle) #ifdef Q_WS_MAC qt_applefontsmoothing_enabled = oldSmooth; #endif - drawTextLayout(&p, QPointF(0,0), drawStyle); + drawTextLayout(&p, QPointF(-layedOutTextRect.x(),0), drawStyle); } return img; } @@ -548,7 +511,7 @@ void QDeclarativeTextPrivate::drawTextLayout(QPainter *painter, const QPointF &p painter->setFont(font); layout.draw(painter, pos); if (!elidePos.isNull()) - painter->drawText(elidePos, elideChar); + painter->drawText(pos + elidePos, elideChar); } /*! @@ -953,14 +916,18 @@ void QDeclarativeText::setText(const QString &n) return; d->richText = d->format == RichText || (d->format == AutoText && Qt::mightBeRichText(n)); - if (d->richText && isComponentComplete()) { - d->ensureDoc(); - d->doc->setText(n); - } - d->text = n; + if (isComponentComplete()) { + if (d->richText) { + d->ensureDoc(); + d->doc->setText(n); + d->rightToLeftText = d->doc->toPlainText().isRightToLeft(); + } else { + d->rightToLeftText = d->text.isRightToLeft(); + } + d->determineHorizontalAlignment(); + } d->updateLayout(); - emit textChanged(d->text); } @@ -1083,9 +1050,12 @@ void QDeclarativeText::setStyleColor(const QColor &color) /*! \qmlproperty enumeration Text::horizontalAlignment \qmlproperty enumeration Text::verticalAlignment + \qmlproperty enumeration Text::effectiveHorizontalAlignment Sets the horizontal and vertical alignment of the text within the Text items - width and height. By default, the text is top-left aligned. + width and height. By default, the text is vertically aligned to the top. Horizontal + alignment follows the natural alignment of the text, for example text that is read + from left to right will be aligned to the left. The valid values for \c horizontalAlignment are \c Text.AlignLeft, \c Text.AlignRight, \c Text.AlignHCenter and \c Text.AlignJustify. The valid values for \c verticalAlignment are \c Text.AlignTop, \c Text.AlignBottom @@ -1095,6 +1065,11 @@ void QDeclarativeText::setStyleColor(const QColor &color) all alignments are equivalent. If you want the text to be, say, centered in its parent, then you will need to either modify the Item::anchors, or set horizontalAlignment to Text.AlignHCenter and bind the width to that of the parent. + + When using the attached property LayoutMirroring::enabled to mirror application + layouts, the horizontal alignment of text will also be mirrored. However, the property + \c horizontalAlignment will remain unchanged. To query the effective horizontal alignment + of Text, use the read-only property \c effectiveHorizontalAlignment. */ QDeclarativeText::HAlignment QDeclarativeText::hAlign() const { @@ -1105,16 +1080,78 @@ QDeclarativeText::HAlignment QDeclarativeText::hAlign() const void QDeclarativeText::setHAlign(HAlignment align) { Q_D(QDeclarativeText); - if (d->hAlign == align) - return; + bool forceAlign = d->hAlignImplicit && d->effectiveLayoutMirror; + d->hAlignImplicit = false; + if (d->setHAlign(align, forceAlign) && isComponentComplete()) + d->updateLayout(); +} - if (isComponentComplete()) - prepareGeometryChange(); +void QDeclarativeText::resetHAlign() +{ + Q_D(QDeclarativeText); + d->hAlignImplicit = true; + if (d->determineHorizontalAlignment() && isComponentComplete()) + d->updateLayout(); +} - d->hAlign = align; - d->updateLayout(); +QDeclarativeText::HAlignment QDeclarativeText::effectiveHAlign() const +{ + Q_D(const QDeclarativeText); + QDeclarativeText::HAlignment effectiveAlignment = d->hAlign; + if (!d->hAlignImplicit && d->effectiveLayoutMirror) { + switch (d->hAlign) { + case QDeclarativeText::AlignLeft: + effectiveAlignment = QDeclarativeText::AlignRight; + break; + case QDeclarativeText::AlignRight: + effectiveAlignment = QDeclarativeText::AlignLeft; + break; + default: + break; + } + } + return effectiveAlignment; +} + +bool QDeclarativeTextPrivate::setHAlign(QDeclarativeText::HAlignment alignment, bool forceAlign) +{ + Q_Q(QDeclarativeText); + if (hAlign != alignment || forceAlign) { + QDeclarativeText::HAlignment oldEffectiveHAlign = q->effectiveHAlign(); + hAlign = alignment; + + emit q->horizontalAlignmentChanged(hAlign); + if (oldEffectiveHAlign != q->effectiveHAlign()) + emit q->effectiveHorizontalAlignmentChanged(); + return true; + } + return false; +} + +bool QDeclarativeTextPrivate::determineHorizontalAlignment() +{ + Q_Q(QDeclarativeText); + if (hAlignImplicit && q->isComponentComplete()) { + bool alignToRight = text.isEmpty() ? QApplication::keyboardInputDirection() == Qt::RightToLeft : rightToLeftText; + return setHAlign(alignToRight ? QDeclarativeText::AlignRight : QDeclarativeText::AlignLeft); + } + return false; +} - emit horizontalAlignmentChanged(align); +void QDeclarativeTextPrivate::mirrorChange() +{ + Q_Q(QDeclarativeText); + if (q->isComponentComplete()) { + if (!hAlignImplicit && (hAlign == QDeclarativeText::AlignRight || hAlign == QDeclarativeText::AlignLeft)) { + updateLayout(); + emit q->effectiveHorizontalAlignmentChanged(); + } + } +} + +QTextDocument *QDeclarativeTextPrivate::textDocument() +{ + return doc; } QDeclarativeText::VAlignment QDeclarativeText::vAlign() const @@ -1168,6 +1205,7 @@ void QDeclarativeText::setWrapMode(WrapMode mode) /*! \qmlproperty int Text::lineCount + \since Quick 1.1 Returns the number of lines visible in the text item. @@ -1183,6 +1221,7 @@ int QDeclarativeText::lineCount() const /*! \qmlproperty bool Text::truncated + \since Quick 1.1 Returns true if the text has been truncated due to \l maximumLineCount or \l elide. @@ -1199,6 +1238,7 @@ bool QDeclarativeText::truncated() const /*! \qmlproperty int Text::maximumLineCount + \since Quick 1.1 Set this property to limit the number of lines that the text item will show. If elide is set to Text.ElideRight, the text will be elided appropriately. @@ -1365,44 +1405,25 @@ QRectF QDeclarativeText::boundingRect() const { Q_D(const QDeclarativeText); - int w = width(); - int h = height(); - - int x = 0; - int y = 0; - - QSize size = d->layedOutTextSize; + QRect rect = d->layedOutTextRect; if (d->style != Normal) - size += QSize(2,2); + rect.adjust(-1, 0, 1, 2); // Could include font max left/right bearings to either side of rectangle. - switch (d->hAlign) { - case AlignLeft: - case AlignJustify: - x = 0; - break; - case AlignRight: - x = w - size.width(); - break; - case AlignHCenter: - x = (w - size.width()) / 2; - break; - } - + int h = height(); switch (d->vAlign) { case AlignTop: - y = 0; break; case AlignBottom: - y = h - size.height(); + rect.setY(h - rect.height()); break; case AlignVCenter: - y = (h - size.height()) / 2; + rect.setY((h - rect.height()) / 2); break; } - return QRectF(x,y,size.width(),size.height()); + return QRectF(rect); } /*! \internal */ @@ -1451,6 +1472,7 @@ qreal QDeclarativeText::paintedHeight() const /*! \qmlproperty real Text::lineHeight + \since Quick 1.1 Sets the line height for the text. The value can be in pixels or a multiplier depending on lineHeightMode. @@ -1547,8 +1569,8 @@ void QDeclarativeText::paint(QPainter *p, const QStyleOptionGraphicsItem *, QWid } else { QRectF bounds = boundingRect(); - bool needClip = clip() && (d->layedOutTextSize.width() > width() || - d->layedOutTextSize.height() > height()); + bool needClip = clip() && (d->layedOutTextRect.width() > width() || + d->layedOutTextRect.height() > height()); if (needClip) { p->save(); @@ -1580,7 +1602,11 @@ void QDeclarativeText::componentComplete() if (d->richText) { d->ensureDoc(); d->doc->setText(d->text); + d->rightToLeftText = d->doc->toPlainText().isRightToLeft(); + } else { + d->rightToLeftText = d->text.isRightToLeft(); } + d->determineHorizontalAlignment(); d->updateLayout(); } } |