/**************************************************************************** ** ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). ** All rights reserved. ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtDeclarative module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** 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. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "private/qdeclarativetextedit_p.h" #include "private/qdeclarativetextedit_p_p.h" #include "private/qdeclarativeevents_p_p.h" #include #include #include #include #include #include #include #include #include QT_BEGIN_NAMESPACE /*! \qmlclass TextEdit QDeclarativeTextEdit \since 4.7 \brief The TextEdit item allows you to add editable formatted text to a scene. It can display both plain and rich text. For example: \qml TextEdit { id: edit text: "Hello World!" focus: true font.family: "Helvetica" font.pointSize: 20 color: "blue" width: 240 } \endqml \image declarative-textedit.gif \sa Text */ /*! \internal \class QDeclarativeTextEdit \qmlclass TextEdit \ingroup group_coreitems \brief The QDeclarativeTextEdit class provides an editable formatted text item that you can add to a QDeclarativeView. It can display both plain and rich text. \image declarative-textedit.png A QDeclarativeTextEdit object can be instantiated in Qml using the tag \c <TextEdit>. */ /*! Constructs a new QDeclarativeTextEdit. */ QDeclarativeTextEdit::QDeclarativeTextEdit(QDeclarativeItem *parent) : QDeclarativePaintedItem(*(new QDeclarativeTextEditPrivate), parent) { Q_D(QDeclarativeTextEdit); d->init(); } QString QDeclarativeTextEdit::text() const { Q_D(const QDeclarativeTextEdit); if (d->richText) return d->document->toHtml(); else return d->document->toPlainText(); } /*! \qmlproperty string TextEdit::font.family Sets the family name of the font. The family name is case insensitive and may optionally include a foundry name, e.g. "Helvetica [Cronyx]". If the family is available from more than one foundry and the foundry isn't specified, an arbitrary foundry is chosen. If the family isn't available a family will be set using the font matching algorithm. */ /*! \qmlproperty bool TextEdit::font.bold Sets the font's weight to bold. */ /*! \qmlproperty enumeration TextEdit::font.weight Sets the font's weight. The weight can be one of: \list \o Light \o Normal - the default \o DemiBold \o Bold \o Black \endlist \qml TextEdit { text: "Hello"; font.weight: Font.DemiBold } \endqml */ /*! \qmlproperty bool TextEdit::font.italic Sets the style of the text to italic. */ /*! \qmlproperty bool TextEdit::font.underline Set the style of the text to underline. */ /*! \qmlproperty bool TextEdit::font.outline Set the style of the text to outline. */ /*! \qmlproperty bool TextEdit::font.strikeout Set the style of the text to strikeout. */ /*! \qmlproperty real TextEdit::font.pointSize Sets the font size in points. The point size must be greater than zero. */ /*! \qmlproperty int TextEdit::font.pixelSize Sets the font size in pixels. Using this function makes the font device dependent. Use \c pointSize to set the size of the font in a device independent manner. */ /*! \qmlproperty real TextEdit::font.letterSpacing Sets the letter spacing for the font. Letter spacing changes the default spacing between individual letters in the font. A value of 100 will keep the spacing unchanged; a value of 200 will enlarge the spacing after a character by the width of the character itself. */ /*! \qmlproperty real TextEdit::font.wordSpacing Sets the word spacing for the font. Word spacing changes the default spacing between individual words. A positive value increases the word spacing by a corresponding amount of pixels, while a negative value decreases the inter-word spacing accordingly. */ /*! \qmlproperty enumeration TextEdit::font.capitalization Sets the capitalization for the text. \list \o MixedCase - This is the normal text rendering option where no capitalization change is applied. \o AllUppercase - This alters the text to be rendered in all uppercase type. \o AllLowercase - This alters the text to be rendered in all lowercase type. \o SmallCaps - This alters the text to be rendered in small-caps type. \o Capitalize - This alters the text to be rendered with the first character of each word as an uppercase character. \endlist \qml TextEdit { text: "Hello"; font.capitalization: Font.AllLowercase } \endqml */ /*! \qmlproperty string TextEdit::text The text to display. If the text format is AutoText the text edit will automatically determine whether the text should be treated as rich text. This determination is made using Qt::mightBeRichText(). */ void QDeclarativeTextEdit::setText(const QString &text) { Q_D(QDeclarativeTextEdit); if (QDeclarativeTextEdit::text() == text) return; d->text = text; d->richText = d->format == RichText || (d->format == AutoText && Qt::mightBeRichText(text)); if (d->richText) { d->control->setHtml(text); } else { d->control->setPlainText(text); } q_textChanged(); } /*! \qmlproperty enumeration TextEdit::textFormat The way the text property should be displayed. Supported text formats are \c AutoText, \c PlainText and \c RichText. The default is AutoText. If the text format is AutoText the text edit will automatically determine whether the text should be treated as rich text. This determination is made using Qt::mightBeRichText(). \table \row \o \qml Column { TextEdit { font.pointSize: 24 text: "Hello World!" } TextEdit { font.pointSize: 24 textFormat: TextEdit.RichText text: "Hello World!" } TextEdit { font.pointSize: 24 textFormat: TextEdit.PlainText text: "Hello World!" } } \endqml \o \image declarative-textformat.png \endtable */ QDeclarativeTextEdit::TextFormat QDeclarativeTextEdit::textFormat() const { Q_D(const QDeclarativeTextEdit); return d->format; } void QDeclarativeTextEdit::setTextFormat(TextFormat format) { Q_D(QDeclarativeTextEdit); if (format == d->format) return; bool wasRich = d->richText; d->richText = format == RichText || (format == AutoText && Qt::mightBeRichText(d->text)); if (wasRich && !d->richText) { d->control->setPlainText(d->text); updateSize(); } else if (!wasRich && d->richText) { d->control->setHtml(d->text); updateSize(); } d->format = format; emit textFormatChanged(d->format); } QFont QDeclarativeTextEdit::font() const { Q_D(const QDeclarativeTextEdit); return d->font; } void QDeclarativeTextEdit::setFont(const QFont &font) { Q_D(QDeclarativeTextEdit); d->font = font; clearCache(); d->document->setDefaultFont(d->font); if(d->cursor){ d->cursor->setHeight(QFontMetrics(d->font).height()); moveCursorDelegate(); } updateSize(); update(); } /*! \qmlproperty color TextEdit::color The text color. \qml // green text using hexadecimal notation TextEdit { color: "#00FF00"; ... } // steelblue text using SVG color name TextEdit { color: "steelblue"; ... } \endqml */ QColor QDeclarativeTextEdit::color() const { Q_D(const QDeclarativeTextEdit); return d->color; } void QDeclarativeTextEdit::setColor(const QColor &color) { Q_D(QDeclarativeTextEdit); if (d->color == color) return; clearCache(); d->color = color; QPalette pal = d->control->palette(); pal.setColor(QPalette::Text, color); d->control->setPalette(pal); update(); emit colorChanged(d->color); } /*! \qmlproperty color TextEdit::selectionColor The text highlight color, used behind selections. */ QColor QDeclarativeTextEdit::selectionColor() const { Q_D(const QDeclarativeTextEdit); return d->selectionColor; } void QDeclarativeTextEdit::setSelectionColor(const QColor &color) { Q_D(QDeclarativeTextEdit); if (d->selectionColor == color) return; clearCache(); d->selectionColor = color; QPalette pal = d->control->palette(); pal.setColor(QPalette::Highlight, color); d->control->setPalette(pal); update(); emit selectionColorChanged(d->selectionColor); } /*! \qmlproperty color TextEdit::selectedTextColor The selected text color, used in selections. */ QColor QDeclarativeTextEdit::selectedTextColor() const { Q_D(const QDeclarativeTextEdit); return d->selectedTextColor; } void QDeclarativeTextEdit::setSelectedTextColor(const QColor &color) { Q_D(QDeclarativeTextEdit); if (d->selectedTextColor == color) return; clearCache(); d->selectedTextColor = color; QPalette pal = d->control->palette(); pal.setColor(QPalette::HighlightedText, color); d->control->setPalette(pal); update(); emit selectedTextColorChanged(d->selectedTextColor); } /*! \qmlproperty enumeration TextEdit::horizontalAlignment \qmlproperty enumeration TextEdit::verticalAlignment Sets the horizontal and vertical alignment of the text within the TextEdit items width and height. By default, the text is top-left aligned. The valid values for \c horizontalAlignment are \c AlignLeft, \c AlignRight and \c AlignHCenter. The valid values for \c verticalAlignment are \c AlignTop, \c AlignBottom and \c AlignVCenter. */ QDeclarativeTextEdit::HAlignment QDeclarativeTextEdit::hAlign() const { Q_D(const QDeclarativeTextEdit); return d->hAlign; } void QDeclarativeTextEdit::setHAlign(QDeclarativeTextEdit::HAlignment alignment) { Q_D(QDeclarativeTextEdit); if (alignment == d->hAlign) return; d->hAlign = alignment; d->updateDefaultTextOption(); updateSize(); emit horizontalAlignmentChanged(d->hAlign); } QDeclarativeTextEdit::VAlignment QDeclarativeTextEdit::vAlign() const { Q_D(const QDeclarativeTextEdit); return d->vAlign; } void QDeclarativeTextEdit::setVAlign(QDeclarativeTextEdit::VAlignment alignment) { Q_D(QDeclarativeTextEdit); if (alignment == d->vAlign) return; d->vAlign = alignment; d->updateDefaultTextOption(); updateSize(); emit verticalAlignmentChanged(d->vAlign); } /*! \qmlproperty enumeration TextEdit::wrapMode Set this property to wrap the text to the TextEdit item's width. The text will only wrap if an explicit width has been set. \list \o NoWrap - no wrapping will be performed. \o WordWrap - wrapping is done on word boundaries. \o WrapAnywhere - Text can be wrapped at any point on a line, even if it occurs in the middle of a word. \o WrapAtWordBoundaryOrAnywhere - If possible, wrapping occurs at a word boundary; otherwise it will occur at the appropriate point on the line, even in the middle of a word. \endlist The default is NoWrap. */ QDeclarativeTextEdit::WrapMode QDeclarativeTextEdit::wrapMode() const { Q_D(const QDeclarativeTextEdit); return d->wrapMode; } void QDeclarativeTextEdit::setWrapMode(WrapMode mode) { Q_D(QDeclarativeTextEdit); if (mode == d->wrapMode) return; d->wrapMode = mode; d->updateDefaultTextOption(); updateSize(); emit wrapModeChanged(); } bool QDeclarativeTextEdit::wrap() const { Q_D(const QDeclarativeTextEdit); return d->wrapMode != QDeclarativeTextEdit::NoWrap; } void QDeclarativeTextEdit::setWrap(bool w) { qmlInfo(this) << "\"wrap\" property is deprecated and will soon be removed. Use wrapMode"; setWrapMode(w ? WordWrap : NoWrap); } /*! \qmlproperty bool TextEdit::cursorVisible If true the text edit shows a cursor. This property is set and unset when the text edit gets focus, but it can also be set directly (useful, for example, if a KeyProxy might forward keys to it). */ bool QDeclarativeTextEdit::isCursorVisible() const { Q_D(const QDeclarativeTextEdit); return d->cursorVisible; } void QDeclarativeTextEdit::setCursorVisible(bool on) { Q_D(QDeclarativeTextEdit); if (d->cursorVisible == on) return; d->cursorVisible = on; QFocusEvent focusEvent(on ? QEvent::FocusIn : QEvent::FocusOut); if (!on && !d->persistentSelection) d->control->setCursorIsFocusIndicator(true); d->control->processEvent(&focusEvent, QPointF(0, 0)); emit cursorVisibleChanged(d->cursorVisible); } /*! \qmlproperty int TextEdit::cursorPosition The position of the cursor in the TextEdit. */ int QDeclarativeTextEdit::cursorPosition() const { Q_D(const QDeclarativeTextEdit); return d->control->textCursor().position(); } void QDeclarativeTextEdit::setCursorPosition(int pos) { Q_D(QDeclarativeTextEdit); QTextCursor cursor = d->control->textCursor(); if (cursor.position() == pos) return; cursor.setPosition(pos); d->control->setTextCursor(cursor); } /*! \qmlproperty Component TextEdit::cursorDelegate The delegate for the cursor in the TextEdit. If you set a cursorDelegate for a TextEdit, this delegate will be used for drawing the cursor instead of the standard cursor. An instance of the delegate will be created and managed by the text edit when a cursor is needed, and the x and y properties of delegate instance will be set so as to be one pixel before the top left of the current character. Note that the root item of the delegate component must be a QDeclarativeItem or QDeclarativeItem derived item. */ QDeclarativeComponent* QDeclarativeTextEdit::cursorDelegate() const { Q_D(const QDeclarativeTextEdit); return d->cursorComponent; } void QDeclarativeTextEdit::setCursorDelegate(QDeclarativeComponent* c) { Q_D(QDeclarativeTextEdit); if(d->cursorComponent){ if(d->cursor){ disconnect(d->control, SIGNAL(cursorPositionChanged()), this, SLOT(moveCursorDelegate())); d->control->setCursorWidth(-1); dirtyCache(cursorRect()); delete d->cursor; d->cursor = 0; } } d->cursorComponent = c; if(c && c->isReady()){ loadCursorDelegate(); }else{ if(c) connect(c, SIGNAL(statusChanged()), this, SLOT(loadCursorDelegate())); } emit cursorDelegateChanged(); } void QDeclarativeTextEdit::loadCursorDelegate() { Q_D(QDeclarativeTextEdit); if(d->cursorComponent->isLoading()) return; d->cursor = qobject_cast(d->cursorComponent->create(qmlContext(this))); if(d->cursor){ connect(d->control, SIGNAL(cursorPositionChanged()), this, SLOT(moveCursorDelegate())); d->control->setCursorWidth(0); dirtyCache(cursorRect()); QDeclarative_setParent_noEvent(d->cursor, this); d->cursor->setParentItem(this); d->cursor->setHeight(QFontMetrics(d->font).height()); moveCursorDelegate(); }else{ qWarning() << QLatin1String("Error loading cursor delegate for TextEdit:") + objectName(); } } /*! \qmlproperty int TextEdit::selectionStart The cursor position before the first character in the current selection. Setting this and selectionEnd allows you to specify a selection in the text edit. Note that if selectionStart == selectionEnd then there is no current selection. If you attempt to set selectionStart to a value outside of the current text, selectionStart will not be changed. \sa selectionEnd, cursorPosition, selectedText */ int QDeclarativeTextEdit::selectionStart() const { Q_D(const QDeclarativeTextEdit); return d->control->textCursor().selectionStart(); } void QDeclarativeTextEdit::setSelectionStart(int s) { Q_D(QDeclarativeTextEdit); if(d->lastSelectionStart == s || s < 0 || s > text().length()) return; d->lastSelectionStart = s; d->updateSelection();// Will emit the relevant signals } /*! \qmlproperty int TextEdit::selectionEnd The cursor position after the last character in the current selection. Setting this and selectionStart allows you to specify a selection in the text edit. Note that if selectionStart == selectionEnd then there is no current selection. If you attempt to set selectionEnd to a value outside of the current text, selectionEnd will not be changed. \sa selectionStart, cursorPosition, selectedText */ int QDeclarativeTextEdit::selectionEnd() const { Q_D(const QDeclarativeTextEdit); return d->control->textCursor().selectionEnd(); } void QDeclarativeTextEdit::setSelectionEnd(int s) { Q_D(QDeclarativeTextEdit); if(d->lastSelectionEnd == s || s < 0 || s > text().length()) return; d->lastSelectionEnd = s; d->updateSelection();// Will emit the relevant signals } /*! \qmlproperty string TextEdit::selectedText This read-only property provides the text currently selected in the text edit. It is equivalent to the following snippet, but is faster and easier to use. \code //myTextEdit is the id of the TextEdit myTextEdit.text.toString().substring(myTextEdit.selectionStart, myTextEdit.selectionEnd); \endcode */ QString QDeclarativeTextEdit::selectedText() const { Q_D(const QDeclarativeTextEdit); return d->control->textCursor().selectedText(); } /*! \qmlproperty bool TextEdit::focusOnPress Whether the TextEdit should gain focus on a mouse press. By default this is set to true. */ bool QDeclarativeTextEdit::focusOnPress() const { Q_D(const QDeclarativeTextEdit); return d->focusOnPress; } void QDeclarativeTextEdit::setFocusOnPress(bool on) { Q_D(QDeclarativeTextEdit); if (d->focusOnPress == on) return; d->focusOnPress = on; emit focusOnPressChanged(d->focusOnPress); } /*! \qmlproperty bool TextEdit::persistentSelection Whether the TextEdit should keep the selection visible when it loses focus to another item in the scene. By default this is set to true; */ bool QDeclarativeTextEdit::persistentSelection() const { Q_D(const QDeclarativeTextEdit); return d->persistentSelection; } void QDeclarativeTextEdit::setPersistentSelection(bool on) { Q_D(QDeclarativeTextEdit); if (d->persistentSelection == on) return; d->persistentSelection = on; emit persistentSelectionChanged(d->persistentSelection); } /* \qmlproperty number TextEdit::textMargin The margin, in pixels, around the text in the TextEdit. */ qreal QDeclarativeTextEdit::textMargin() const { Q_D(const QDeclarativeTextEdit); return d->textMargin; } void QDeclarativeTextEdit::setTextMargin(qreal margin) { Q_D(QDeclarativeTextEdit); if (d->textMargin == margin) return; d->textMargin = margin; d->document->setDocumentMargin(d->textMargin); emit textMarginChanged(d->textMargin); } void QDeclarativeTextEdit::geometryChanged(const QRectF &newGeometry, const QRectF &oldGeometry) { if (newGeometry.width() != oldGeometry.width()) updateSize(); QDeclarativePaintedItem::geometryChanged(newGeometry, oldGeometry); } /*! Ensures any delayed caching or data loading the class needs to performed is complete. */ void QDeclarativeTextEdit::componentComplete() { Q_D(QDeclarativeTextEdit); QDeclarativePaintedItem::componentComplete(); if (d->dirty) { updateSize(); d->dirty = false; } } /*! \qmlproperty bool TextEdit::readOnly Whether the user an interact with the TextEdit item. If this property is set to true the text cannot be edited by user interaction. By default this property is false. */ void QDeclarativeTextEdit::setReadOnly(bool r) { Q_D(QDeclarativeTextEdit); if (r == isReadOnly()) return; Qt::TextInteractionFlags flags = Qt::NoTextInteraction; if (r) { flags = Qt::TextSelectableByMouse; } else { flags = Qt::TextEditorInteraction; } d->control->setTextInteractionFlags(flags); if (!r) d->control->moveCursor(QTextCursor::End); emit readOnlyChanged(r); } bool QDeclarativeTextEdit::isReadOnly() const { Q_D(const QDeclarativeTextEdit); return !(d->control->textInteractionFlags() & Qt::TextEditable); } /*! Sets how the text edit should interact with user input to the given \a flags. */ void QDeclarativeTextEdit::setTextInteractionFlags(Qt::TextInteractionFlags flags) { Q_D(QDeclarativeTextEdit); d->control->setTextInteractionFlags(flags); } /*! Returns the flags specifying how the text edit should interact with user input. */ Qt::TextInteractionFlags QDeclarativeTextEdit::textInteractionFlags() const { Q_D(const QDeclarativeTextEdit); return d->control->textInteractionFlags(); } /*! Returns the rectangle where the text cursor is rendered within the text edit. */ QRect QDeclarativeTextEdit::cursorRect() const { Q_D(const QDeclarativeTextEdit); return d->control->cursorRect().toRect(); } /*! \overload Handles the given \a event. */ bool QDeclarativeTextEdit::event(QEvent *event) { Q_D(QDeclarativeTextEdit); if (event->type() == QEvent::ShortcutOverride) { d->control->processEvent(event, QPointF(0, 0)); return event->isAccepted(); } return QDeclarativePaintedItem::event(event); } /*! \overload Handles the given key \a event. */ void QDeclarativeTextEdit::keyPressEvent(QKeyEvent *event) { Q_D(QDeclarativeTextEdit); d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::keyPressEvent(event); } /*! \overload Handles the given key \a event. */ void QDeclarativeTextEdit::keyReleaseEvent(QKeyEvent *event) { Q_D(QDeclarativeTextEdit); d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::keyReleaseEvent(event); } void QDeclarativeTextEditPrivate::focusChanged(bool hasFocus) { Q_Q(QDeclarativeTextEdit); q->setCursorVisible(hasFocus); QDeclarativeItemPrivate::focusChanged(hasFocus); } /*! Causes all text to be selected. */ void QDeclarativeTextEdit::selectAll() { Q_D(QDeclarativeTextEdit); d->control->selectAll(); } /*! \overload Handles the given mouse \a event. */ void QDeclarativeTextEdit::mousePressEvent(QGraphicsSceneMouseEvent *event) { Q_D(QDeclarativeTextEdit); if (d->focusOnPress){ QGraphicsItem *p = parentItem();//###Is there a better way to find my focus scope? while(p) { if(p->flags() & QGraphicsItem::ItemIsFocusScope){ p->setFocus(); break; } p = p->parentItem(); } setFocus(true); } d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::mousePressEvent(event); } /*! \overload Handles the given mouse \a event. */ void QDeclarativeTextEdit::mouseReleaseEvent(QGraphicsSceneMouseEvent *event) { Q_D(QDeclarativeTextEdit); QWidget *widget = event->widget(); if (widget && (d->control->textInteractionFlags() & Qt::TextEditable) && boundingRect().contains(event->pos())) qt_widget_private(widget)->handleSoftwareInputPanel(event->button(), d->focusOnPress); d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::mousePressEvent(event); } /*! \overload Handles the given mouse \a event. */ void QDeclarativeTextEdit::mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) { Q_D(QDeclarativeTextEdit); d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::mouseDoubleClickEvent(event); } /*! \overload Handles the given mouse \a event. */ void QDeclarativeTextEdit::mouseMoveEvent(QGraphicsSceneMouseEvent *event) { Q_D(QDeclarativeTextEdit); d->control->processEvent(event, QPointF(0, 0)); if (!event->isAccepted()) QDeclarativePaintedItem::mousePressEvent(event); } /*! \overload Handles the given input method \a event. */ void QDeclarativeTextEdit::inputMethodEvent(QInputMethodEvent *event) { Q_D(QDeclarativeTextEdit); d->control->processEvent(event, QPointF(0, 0)); } /*! \overload Returns the value of the given \a property. */ QVariant QDeclarativeTextEdit::inputMethodQuery(Qt::InputMethodQuery property) const { Q_D(const QDeclarativeTextEdit); return d->control->inputMethodQuery(property); } /*! Draws the contents of the text edit using the given \a painter within the given \a bounds. */ void QDeclarativeTextEdit::drawContents(QPainter *painter, const QRect &bounds) { Q_D(QDeclarativeTextEdit); painter->setRenderHint(QPainter::TextAntialiasing, true); d->control->drawContents(painter, bounds); } void QDeclarativeTextEdit::updateImgCache(const QRectF &r) { dirtyCache(r.toRect()); emit update(); } /*! \qmlproperty bool TextEdit::smooth Set this property if you want the text to be smoothly scaled or transformed. Smooth filtering gives better visual quality, but is slower. If the item is displayed at its natural size, this property has no visual or performance effect. \note Generally scaling artifacts are only visible if the item is stationary on the screen. A common pattern when animating an item is to disable smooth filtering at the beginning of the animation and reenable it at the conclusion. */ void QDeclarativeTextEditPrivate::init() { Q_Q(QDeclarativeTextEdit); q->setSmooth(smooth); q->setAcceptedMouseButtons(Qt::LeftButton); q->setFlag(QGraphicsItem::ItemHasNoContents, false); q->setFlag(QGraphicsItem::ItemAcceptsInputMethod); control = new QTextControl(q); control->setIgnoreUnusedNavigationEvents(true); QObject::connect(control, SIGNAL(updateRequest(QRectF)), q, SLOT(updateImgCache(QRectF))); QObject::connect(control, SIGNAL(textChanged()), q, SLOT(q_textChanged())); QObject::connect(control, SIGNAL(selectionChanged()), q, SIGNAL(selectionChanged())); QObject::connect(control, SIGNAL(selectionChanged()), q, SLOT(updateSelectionMarkers())); QObject::connect(control, SIGNAL(cursorPositionChanged()), q, SLOT(updateSelectionMarkers())); QObject::connect(control, SIGNAL(cursorPositionChanged()), q, SIGNAL(cursorPositionChanged())); document = control->document(); document->setDefaultFont(font); document->setDocumentMargin(textMargin); document->setUndoRedoEnabled(false); // flush undo buffer. document->setUndoRedoEnabled(true); updateDefaultTextOption(); } void QDeclarativeTextEdit::q_textChanged() { updateSize(); emit textChanged(text()); } void QDeclarativeTextEdit::moveCursorDelegate() { Q_D(QDeclarativeTextEdit); if(!d->cursor) return; QRectF cursorRect = d->control->cursorRect(); d->cursor->setX(cursorRect.x()); d->cursor->setY(cursorRect.y()); } void QDeclarativeTextEditPrivate::updateSelection() { Q_Q(QDeclarativeTextEdit); QTextCursor cursor = control->textCursor(); bool startChange = (lastSelectionStart != cursor.selectionStart()); bool endChange = (lastSelectionEnd != cursor.selectionEnd()); //### Is it worth calculating a more minimal set of movements? cursor.beginEditBlock(); cursor.setPosition(lastSelectionStart, QTextCursor::MoveAnchor); cursor.setPosition(lastSelectionEnd, QTextCursor::KeepAnchor); cursor.endEditBlock(); control->setTextCursor(cursor); if(startChange) q->selectionStartChanged(); if(endChange) q->selectionEndChanged(); startChange = (lastSelectionStart != control->textCursor().selectionStart()); endChange = (lastSelectionEnd != control->textCursor().selectionEnd()); if(startChange || endChange) qWarning() << "QDeclarativeTextEditPrivate::updateSelection() has failed you."; } void QDeclarativeTextEdit::updateSelectionMarkers() { Q_D(QDeclarativeTextEdit); if(d->lastSelectionStart != d->control->textCursor().selectionStart()){ d->lastSelectionStart = d->control->textCursor().selectionStart(); emit selectionStartChanged(); } if(d->lastSelectionEnd != d->control->textCursor().selectionEnd()){ d->lastSelectionEnd = d->control->textCursor().selectionEnd(); emit selectionEndChanged(); } } //### we should perhaps be a bit smarter here -- depending on what has changed, we shouldn't // need to do all the calculations each time void QDeclarativeTextEdit::updateSize() { Q_D(QDeclarativeTextEdit); if (isComponentComplete()) { QFontMetrics fm = QFontMetrics(d->font); int dy = height(); // ### assumes that if the width is set, the text will fill to edges // ### (unless wrap is false, then clipping will occur) if (widthValid()) d->document->setTextWidth(width()); dy -= (int)d->document->size().height(); int yoff = 0; if (heightValid()) { if (d->vAlign == AlignBottom) yoff = dy; else if (d->vAlign == AlignVCenter) yoff = dy/2; } setBaselineOffset(fm.ascent() + yoff + d->textMargin); //### need to comfirm cost of always setting these int newWidth = (int)d->document->idealWidth(); d->document->setTextWidth(newWidth); // ### QTextDoc> Alignment will not work unless textWidth is set. Does Text need this line as well? int cursorWidth = 1; if(d->cursor) cursorWidth = d->cursor->width(); newWidth += cursorWidth; if(!d->document->isEmpty()) newWidth += 3;// ### Need a better way of accounting for space between char and cursor // ### Setting the implicitWidth triggers another updateSize(), and unless there are bindings nothing has changed. setImplicitWidth(newWidth); setImplicitHeight(d->text.isEmpty() ? fm.height() : (int)d->document->size().height()); setContentsSize(QSize(width(), height())); } else { d->dirty = true; } emit update(); } void QDeclarativeTextEditPrivate::updateDefaultTextOption() { QTextOption opt = document->defaultTextOption(); int oldAlignment = opt.alignment(); opt.setAlignment((Qt::Alignment)(int)(hAlign | vAlign)); QTextOption::WrapMode oldWrapMode = opt.wrapMode(); opt.setWrapMode(QTextOption::WrapMode(wrapMode)); if (oldWrapMode == opt.wrapMode() && oldAlignment == opt.alignment()) return; document->setDefaultTextOption(opt); } QT_END_NAMESPACE