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Diffstat (limited to 'src/declarative/fx/qfxtextinput.cpp')
| -rw-r--r-- | src/declarative/fx/qfxtextinput.cpp | 626 |
1 files changed, 626 insertions, 0 deletions
diff --git a/src/declarative/fx/qfxtextinput.cpp b/src/declarative/fx/qfxtextinput.cpp new file mode 100644 index 0000000..1407a78 --- /dev/null +++ b/src/declarative/fx/qfxtextinput.cpp @@ -0,0 +1,626 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, 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 are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qfxtextinput.h" +#include "qfxtextinput_p.h" +#include <QValidator> +#include <QApplication> +#include <QFontMetrics> +#include <QPainter> + +QT_BEGIN_NAMESPACE + +QML_DEFINE_TYPE(Qt,4,6,(QT_VERSION&0x00ff00)>>8,TextInput,QFxTextInput); +QML_DEFINE_NOCREATE_TYPE(QValidator); +QML_DEFINE_TYPE(Qt,4,6,(QT_VERSION&0x00ff00)>>8,QIntValidator,QIntValidator); + +/*! + \qmlclass LineEdit + The LineEdit item allows you to add an editable line of text to a scene. +*/ +QFxTextInput::QFxTextInput(QFxItem* parent) + : QFxPaintedItem(*(new QFxTextInputPrivate), parent) +{ + Q_D(QFxTextInput); + d->init(); +} + +/* + \internal +*/ +QFxTextInput::QFxTextInput(QFxTextInputPrivate &dd, QFxItem* parent) + : QFxPaintedItem(dd, parent) +{ + Q_D(QFxTextInput); + d->init(); +} + +QFxTextInput::~QFxTextInput() +{ +} + +/*! + \qmlproperty string LineEdit::text + + The text in the LineEdit. +*/ + +QString QFxTextInput::text() const +{ + Q_D(const QFxTextInput); + return d->control->text(); +} + +void QFxTextInput::setText(const QString &s) +{ + Q_D(QFxTextInput); + if(s == text()) + return; + d->control->setText(s); + //emit textChanged(); +} + +/*! + \qmlproperty font LineEdit::font + + Set the LineEdit's font attributes. \c font.size sets the font's point size. +*/ +QFont QFxTextInput::font() const +{ + Q_D(const QFxTextInput); + return d->font; +} + +void QFxTextInput::setFont(const QFont &font) +{ + Q_D(QFxTextInput); + d->font = font; + + d->control->setFont(d->font); + if(d->cursorItem){ + d->cursorItem->setHeight(QFontMetrics(d->font).height()); + moveCursor(); + } + //updateSize(); + updateAll();//TODO: Only necessary updates + update(); +} + +/*! + \qmlproperty color LineEdit::color + + The text color. +*/ +QColor QFxTextInput::color() const +{ + Q_D(const QFxTextInput); + return d->color; +} + +void QFxTextInput::setColor(const QColor &c) +{ + Q_D(QFxTextInput); + d->color = c; +} + + +/*! + \qmlproperty color LineEdit::highlightColor + + The text highlight color, used behind selections. +*/ +QColor QFxTextInput::highlightColor() const +{ + Q_D(const QFxTextInput); + return d->highlightColor; +} + +void QFxTextInput::setHighlightColor(const QColor &color) +{ + Q_D(QFxTextInput); + if (d->highlightColor == color) + return; + + d->highlightColor = color; + //TODO: implement +} + +/*! + \qmlproperty color LineEdit::highlightedTextColor + + The highlighted text color, used in selections. +*/ +QColor QFxTextInput::highlightedTextColor() const +{ + Q_D(const QFxTextInput); + return d->highlightedTextColor; +} + +void QFxTextInput::setHighlightedTextColor(const QColor &color) +{ + Q_D(QFxTextInput); + if (d->highlightedTextColor == color) + return; + + d->highlightedTextColor = color; + //TODO: implement +} + +QFxTextInput::HAlignment QFxTextInput::hAlign() const +{ + Q_D(const QFxTextInput); + return d->hAlign; +} + +void QFxTextInput::setHAlign(HAlignment align) +{ + Q_D(QFxTextInput); + d->hAlign = align; +} + +bool QFxTextInput::isReadOnly() const +{ + Q_D(const QFxTextInput); + return d->control->isReadOnly(); +} + +void QFxTextInput::setReadOnly(bool ro) +{ + Q_D(QFxTextInput); + d->control->setReadOnly(ro); +} + +int QFxTextInput::maxLength() const +{ + Q_D(const QFxTextInput); + return d->control->maxLength(); +} + +void QFxTextInput::setMaxLength(int ml) +{ + Q_D(QFxTextInput); + d->control->setMaxLength(ml); +} + +/*! + \qmlproperty bool LineEdit::cursorVisible + If true the text edit shows a cursor. + + This property is set and unset when the line edit gets focus, but it can also + be set directly (useful, for example, if a KeyProxy might forward keys to it). +*/ +bool QFxTextInput::isCursorVisible() const +{ + Q_D(const QFxTextInput); + return d->cursorVisible; +} + +void QFxTextInput::setCursorVisible(bool on) +{ + Q_D(QFxTextInput); + if (d->cursorVisible == on) + return; + d->cursorVisible = on; + d->control->setCursorBlinkPeriod(on?QApplication::cursorFlashTime():0); + updateAll();//TODO: Only update cursor rect +} + +/*! + \qmlproperty int LineEdit::cursorPosition + The position of the cursor in the LineEdit. +*/ +int QFxTextInput::cursorPosition() const +{ + Q_D(const QFxTextInput); + return d->control->cursor(); +} +void QFxTextInput::setCursorPosition(int cp) +{ + Q_D(QFxTextInput); + d->control->moveCursor(cp); +} + +/*! + \qmlproperty int LineEdit::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 QFxTextInput::selectionStart() const +{ + Q_D(const QFxTextInput); + return d->lastSelectionStart; +} + +void QFxTextInput::setSelectionStart(int s) +{ + Q_D(QFxTextInput); + if(d->lastSelectionStart == s || s < 0 || s > text().length()) + return; + d->lastSelectionStart = s; + d->control->setSelection(s, d->lastSelectionEnd - s); +} + +/*! + \qmlproperty int LineEdit::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 QFxTextInput::selectionEnd() const +{ + Q_D(const QFxTextInput); + return d->lastSelectionEnd; +} + +void QFxTextInput::setSelectionEnd(int s) +{ + Q_D(QFxTextInput); + if(d->lastSelectionEnd == s || s < 0 || s > text().length()) + return; + d->lastSelectionEnd = s; + d->control->setSelection(d->lastSelectionStart, s - d->lastSelectionStart); +} + +QString QFxTextInput::selectedText() const +{ + Q_D(const QFxTextInput); + return d->control->selectedText(); +} + +QValidator* QFxTextInput::validator() const +{ + Q_D(const QFxTextInput); + //###const cast isn't good, but needed for property system? + return const_cast<QValidator*>(d->control->validator()); +} + +void QFxTextInput::setValidator(QValidator* v) +{ + Q_D(QFxTextInput); + d->control->setValidator(v); + if(!d->control->hasAcceptableInput()){ + d->oldValidity = false; + emit acceptableInputChanged(); + } +} + +QString QFxTextInput::inputMask() const +{ + Q_D(const QFxTextInput); + return d->control->inputMask(); +} + +void QFxTextInput::setInputMask(const QString &im) +{ + Q_D(QFxTextInput); + d->control->setInputMask(im); +} + +bool QFxTextInput::hasAcceptableInput() const +{ + Q_D(const QFxTextInput); + return d->control->hasAcceptableInput(); +} + +uint QFxTextInput::echoMode() const +{ + Q_D(const QFxTextInput); + return d->control->echoMode(); +} + +void QFxTextInput::setEchoMode(uint echo) +{ + Q_D(QFxTextInput); + d->control->setEchoMode(echo); +} + +/*! + \qmlproperty Component LineEdit::cursorDelegate + The delegate for the cursor in the LineEdit. + + If you set a cursorDelegate for a LineEdit, 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 LineEdit when a cursor is + needed, and the x property 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 QFxItem or + QFxItem derived item. +*/ +QmlComponent* QFxTextInput::cursorDelegate() const +{ + Q_D(const QFxTextInput); + return d->cursorComponent; +} + +void QFxTextInput::setCursorDelegate(QmlComponent* c) +{ + Q_D(QFxTextInput); + if(d->cursorComponent) + delete d->cursorComponent; + d->cursorComponent = c; + d->startCreatingCursor(); +} + +void QFxTextInputPrivate::startCreatingCursor() +{ + Q_Q(QFxTextInput); + if(!cursorComponent){ + q->disconnect(control, SIGNAL(cursorPositionChanged(int, int)), + q, SLOT(moveCursor())); + return; + } + q->connect(control, SIGNAL(cursorPositionChanged(int, int)), + q, SLOT(moveCursor())); + if(cursorComponent->isReady()){ + q->createCursor(); + }else if(cursorComponent->isLoading()){ + q->connect(cursorComponent, SIGNAL(statusChanged(int)), + q, SLOT(createCursor())); + }else{//isError + qWarning() << "You could really use the error checking for QFxTextInput. We'll implement it soon."; + } +} + +void QFxTextInput::createCursor() +{ + Q_D(QFxTextInput); + //Handle isError too + if(!d->cursorComponent->isReady()) + return; + + if(d->cursorItem) + delete d->cursorItem; + d->cursorItem = qobject_cast<QFxItem*>(d->cursorComponent->create()); + if(!d->cursorItem){ + qWarning() << "You could really use the error reporting for QFxTextInput. We'll implement it soon."; + return; + } + + d->cursorItem->setParentItem(this); + d->cursorItem->setX(d->control->cursorToX()); + d->cursorItem->setHeight(d->control->height()); +} + +void QFxTextInput::moveCursor() +{ + Q_D(QFxTextInput); + if(!d->cursorItem) + return; + d->cursorItem->setX(d->control->cursorToX() - d->hscroll); +} + +int QFxTextInput::xToPos(int x) +{ + Q_D(const QFxTextInput); + return d->control->xToPos(x - d->hscroll); +} + +void QFxTextInput::focusChanged(bool hasFocus) +{ + Q_D(QFxTextInput); + d->focused = hasFocus; + setCursorVisible(hasFocus); + QFxItem::focusChanged(hasFocus); +} + +void QFxTextInput::keyPressEvent(QKeyEvent* ev) +{ + Q_D(QFxTextInput); + d->control->processKeyEvent(ev); + if (!ev->isAccepted()) + QFxPaintedItem::keyPressEvent(ev); +} + +void QFxTextInput::mousePressEvent(QGraphicsSceneMouseEvent *event) +{ + Q_D(QFxTextInput); + setFocus(true);//###Should we make 'focusOnPress' be optional like TextEdit? + setCursorVisible(true); + d->focused = true; + d->control->processEvent(event); + //event->accept(); +} + +bool QFxTextInput::event(QEvent* ev) +{ + Q_D(QFxTextInput); + //Anything we don't deal with ourselves, pass to the control + switch(ev->type()){ + case QEvent::GraphicsSceneMousePress: + break; + default: + return d->control->processEvent(ev); + } + return false; +} + +void QFxTextInput::geometryChanged(const QRectF &newGeometry, + const QRectF &oldGeometry) +{ + if (newGeometry.width() != oldGeometry.width()) + updateSize(); + QFxPaintedItem::geometryChanged(newGeometry, oldGeometry); +} + +void QFxTextInput::drawContents(QPainter *p, const QRect &r) +{ + Q_D(QFxTextInput); + p->setRenderHint(QPainter::TextAntialiasing, true); + p->save(); + p->setPen(QPen(d->color)); + int flags = QLineControl::DrawText; + if(!isReadOnly() && d->cursorVisible && !d->cursorItem) + flags |= QLineControl::DrawCursor; + if (d->control->hasSelectedText()) + flags |= QLineControl::DrawSelections; + + d->control->draw(p, QPoint(0,0), r, flags); + + p->restore(); +} + +/*! + \qmlproperty bool LineEdit::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 QFxTextInputPrivate::init() +{ + Q_Q(QFxTextInput); + control->setCursorWidth(1); + control->setPasswordCharacter(QLatin1Char('*')); + control->setLayoutDirection(Qt::LeftToRight); + q->setSmoothTransform(smooth); + q->setAcceptedMouseButtons(Qt::LeftButton); + q->setFlag(QGraphicsItem::ItemHasNoContents, false); + q->setFlag(QGraphicsItem::ItemAcceptsInputMethod); + q->connect(control, SIGNAL(cursorPositionChanged(int,int)), + q, SLOT(cursorPosChanged())); + q->connect(control, SIGNAL(selectionChanged()), + q, SLOT(selectionChanged())); + q->connect(control, SIGNAL(textChanged(const QString &)), + q, SLOT(q_textChanged())); + q->connect(control, SIGNAL(accepted()), + q, SIGNAL(accepted())); + q->connect(control, SIGNAL(updateNeeded(const QRect &)), + // q, SLOT(dirtyCache(const QRect &))); + q, SLOT(updateAll())); + q->connect(control, SIGNAL(cursorPositionChanged(int,int)), + q, SLOT(updateAll())); + q->connect(control, SIGNAL(selectionChanged()), + q, SLOT(updateAll())); + q->updateSize(); + oldValidity = control->hasAcceptableInput(); + lastSelectionStart = 0; + lastSelectionEnd = 0; +} + +void QFxTextInput::cursorPosChanged() +{ + Q_D(QFxTextInput); + emit cursorPositionChanged(); + + if(!d->control->hasSelectedText()){ + if(d->lastSelectionStart != d->control->cursor()){ + d->lastSelectionStart = d->control->cursor(); + emit selectionStartChanged(); + } + if(d->lastSelectionEnd != d->control->cursor()){ + d->lastSelectionEnd = d->control->cursor(); + emit selectionEndChanged(); + } + } +} + +void QFxTextInput::selectionChanged() +{ + Q_D(QFxTextInput); + emit selectedTextChanged(); + + if(d->lastSelectionStart != d->control->selectionStart()){ + d->lastSelectionStart = d->control->selectionStart(); + if(d->lastSelectionStart == -1) + d->lastSelectionStart = d->control->cursor(); + emit selectionStartChanged(); + } + if(d->lastSelectionEnd != d->control->selectionEnd()){ + d->lastSelectionEnd = d->control->selectionEnd(); + if(d->lastSelectionEnd == -1) + d->lastSelectionEnd = d->control->cursor(); + emit selectionEndChanged(); + } +} + +void QFxTextInput::q_textChanged() +{ + Q_D(QFxTextInput); + updateAll(); + emit textChanged(); + if(hasAcceptableInput() != d->oldValidity){ + d->oldValidity = hasAcceptableInput(); + emit acceptableInputChanged(); + } +} + +//### Please replace this function with proper updating +void QFxTextInput::updateAll() +{ + clearCache(); + updateSize(); + update(); +} + +void QFxTextInput::updateSize() +{ + Q_D(QFxTextInput); + setImplicitHeight(d->control->height()); + //d->control->width() is max width, not current width + QFontMetrics fm = QFontMetrics(d->font); + setImplicitWidth(fm.boundingRect(d->control->text()).width()+1); + setContentsSize(QSize(width(), height())); +} + +QT_END_NAMESPACE + |