diff options
Diffstat (limited to 'lib/widgets/qcomboview.cpp')
| -rw-r--r-- | lib/widgets/qcomboview.cpp | 1505 |
1 files changed, 1505 insertions, 0 deletions
diff --git a/lib/widgets/qcomboview.cpp b/lib/widgets/qcomboview.cpp new file mode 100644 index 00000000..2cab4fea --- /dev/null +++ b/lib/widgets/qcomboview.cpp @@ -0,0 +1,1505 @@ +/********************************************************************** +** +** +** Implementation of QComboView widget class +** +** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. +** Copyright (C) 2003 Alexander Dymo <cloudtemple@mksat.net> +** +** This file may be distributed and/or modified under the terms of the +** GNU General Public License version 2 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. +** +**********************************************************************/ + +#include "qcomboview.h" +#include <kdeversion.h> +#ifndef QT_NO_COMBOBOX +#include "qpopupmenu.h" +#include "qlistview.h" +#include "qpainter.h" +#include "qdrawutil.h" +#include "qstrlist.h" +#include "qpixmap.h" +#include "qtimer.h" +#include "qapplication.h" +#include "qlineedit.h" +#include "qbitmap.h" +#include "private/qeffects_p.h" +#include "qstringlist.h" +#include "qcombobox.h" +#include "qstyle.h" +#include "qheader.h" +#include <limits.h> + +class QComboViewData +{ +public: + QComboViewData( QComboView *cb ): current(0), lView( 0 ), combo( cb ) + { + duplicatesEnabled = TRUE; + cb->setSizePolicy( QSizePolicy( QSizePolicy::Minimum, QSizePolicy::Fixed ) ); + } + + inline QListView * listView() { return lView; } + void updateLinedGeometry(); + + void setListView( QListView *l ) { lView = l ; + l->setMouseTracking( TRUE );} + + QListViewItem *current; + int maxCount; + int sizeLimit; + QComboView::Policy p; + bool autoresize; + bool poppedUp; + bool mouseWasInsidePopup; + bool arrowPressed; + bool arrowDown; + bool discardNextMousePress; + bool shortClick; + bool useCompletion; + bool completeNow; + int completeAt; + bool duplicatesEnabled; + int fullHeight, currHeight; + + QLineEdit * ed; // /bin/ed rules! + QTimer *completionTimer; + + QSize sizeHint; + +private: + bool usinglView; + QListView *lView; + QComboView *combo; + +}; + +void QComboViewData::updateLinedGeometry() +{ + if ( !ed || !combo ) + return; + QRect r = QStyle::visualRect( combo->style().querySubControlMetrics(QStyle::CC_ComboBox, combo, + QStyle::SC_ComboBoxEditField), combo ); + +// qWarning("updateLinedGeometry(): currentItem is %d", combo->currentItem() == 0 ? 0 : 1); + const QPixmap *pix = combo->currentItem() ? combo->currentItem()->pixmap(0) : 0; + if ( pix && pix->width() < r.width() ) + r.setLeft( r.left() + pix->width() + 4 ); + if ( r != ed->geometry() ) + ed->setGeometry( r ); +} + +static inline bool checkInsertIndex( const char *method, const char * name, + int count, int *index) +{ + bool range_err = (*index > count); +#if defined(QT_CHECK_RANGE) + if ( range_err ) + qWarning( "QComboView::%s: (%s) Index %d out of range", + method, name ? name : "<no name>", *index ); +#else + Q_UNUSED( method ) + Q_UNUSED( name ) +#endif + if ( *index < 0 ) // append + *index = count; + return !range_err; +} + + +static inline bool checkIndex( const char *method, const char * name, + int count, int index ) +{ + bool range_err = (index >= count); +#if defined(QT_CHECK_RANGE) + if ( range_err ) + qWarning( "QComboView::%s: (%s) Index %i out of range", + method, name ? name : "<no name>", index ); +#else + Q_UNUSED( method ) + Q_UNUSED( name ) +#endif + return !range_err; +} + + +/*! + Constructs a combobox with a maximum size and either Motif 2.0 or + Windows look and feel. + + The input field can be edited if \a rw is TRUE, otherwise the user + may only choose one of the items in the combobox. + + The \a parent and \a name arguments are passed on to the QWidget + constructor. +*/ + + +QComboView::QComboView( bool rw, QWidget *parent, const char *name ) + : QWidget( parent, name, WResizeNoErase ) +{ + d = new QComboViewData( this ); + setUpListView(); + + d->current = 0; + d->maxCount = INT_MAX; + setSizeLimit(10); + d->p = AtBottom; + d->autoresize = FALSE; + d->poppedUp = FALSE; + d->arrowDown = FALSE; + d->discardNextMousePress = FALSE; + d->shortClick = FALSE; + d->useCompletion = FALSE; + d->completeAt = 0; + d->completeNow = FALSE; + d->completionTimer = new QTimer( this ); + + setFocusPolicy( StrongFocus ); + + d->ed = 0; + if ( rw ) + setUpLineEdit(); + setBackgroundMode( PaletteButton, PaletteBase ); +} + + + +/*! + Destroys the combobox. +*/ + +QComboView::~QComboView() +{ + delete d; +} + +void QComboView::setDuplicatesEnabled( bool enable ) +{ + d->duplicatesEnabled = enable; +} + +bool QComboView::duplicatesEnabled() const +{ + return d->duplicatesEnabled; +} + +int QComboView::childCount() const +{ + return d->listView()->childCount(); +} + + +/*! + Removes all comboview items. +*/ + +void QComboView::clear() +{ + d->listView()->resize( 0, 0 ); + d->listView()->clear(); + + d->current = 0; + if ( d->ed ) { + d->ed->setText( QString::fromLatin1("") ); + d->updateLinedGeometry(); + } + currentChanged(); +} + +QListViewItem *QComboView::currentItem() const +{ + return d->current; +} + +void QComboView::setCurrentItem( QListViewItem *item ) +{ + if ( item == d->current && !d->ed ) { + return; + } + + if (!item) + { + d->current = 0; + if ( d->ed ) { +// d->ed->setText( "" ); + d->updateLinedGeometry(); + } + return; + } + + d->current = item; + d->completeAt = 0; + if ( d->ed ) { + d->ed->setText( item->text(0) ); +// qWarning("setCurrentItem( %s )", item->text(0).latin1()); + d->updateLinedGeometry(); + } + if ( d->listView() ) { + d->listView()->setCurrentItem( item ); + } else { + internalHighlight( item ); + // internalActivate( item ); ### this leads to weird behavior, as in 3.0.1 + } + + currentChanged(); + + d->listView()->ensureItemVisible(item); +} + +bool QComboView::autoResize() const +{ + return d->autoresize; +} + +void QComboView::setAutoResize( bool enable ) +{ + if ( (bool)d->autoresize != enable ) { + d->autoresize = enable; + if ( enable ) + adjustSize(); + } +} + + +/*! + reimp + + This implementation caches the size hint to avoid resizing when + the contents change dynamically. To invalidate the cached value + call setFont(). +*/ +QSize QComboView::sizeHint() const +{ + if ( isVisible() && d->sizeHint.isValid() ) + return d->sizeHint; + + constPolish(); +// int i, w; + QFontMetrics fm = fontMetrics(); + + int maxW = childCount() ? 18 : 7 * fm.width(QChar('x')) + 18; + int maxH = QMAX( fm.lineSpacing(), 14 ) + 2; + +/* for( i = 0; i < count(); i++ ) { + w = d->listView()->item( i )->width( d->listView() ); + if ( w > maxW ) + maxW = w; + } +*/ + d->sizeHint = (style().sizeFromContents(QStyle::CT_ComboBox, this, + QSize(maxW, maxH)).expandedTo(QApplication::globalStrut())); + + return d->sizeHint; +} + + +/*! + \internal + Receives activated signals from an internal popup list and emits + the activated() signal. +*/ + +void QComboView::internalActivate( QListViewItem * item ) +{ + if (!item) + { + d->current = 0; + if ( d->ed ) { +// d->ed->setText( "" ); + d->updateLinedGeometry(); + } + return; + } + popDownListView(); + d->poppedUp = FALSE; + + d->current = item; + + QString t( item->text(0) ); + if ( d->ed ) { + d->ed->setText( t ); +// qWarning("internalActivate( %s )", item->text(0).latin1()); + d->updateLinedGeometry(); + } + emit activated( item ); + emit activated( t ); + +// item->setOpen(true); +} + +/*! + \internal + Receives highlighted signals from an internal popup list and emits + the highlighted() signal. +*/ + +void QComboView::internalHighlight( QListViewItem * item ) +{ + if (!item) + { + d->current = 0; + if ( d->ed ) { +// d->ed->setText( "" ); + d->updateLinedGeometry(); + } + return; + } + emit highlighted( item ); + QString t = item->text(0); + if ( !t.isNull() ) + emit highlighted( t ); +} + +/*! + \internal + Receives timeouts after a click. Used to decide if a Motif style + popup should stay up or not after a click. +*/ +void QComboView::internalClickTimeout() +{ + d->shortClick = FALSE; +} + +/*! + Sets the palette for both the combobox button and the combobox + popup list to \a palette. +*/ + +void QComboView::setPalette( const QPalette &palette ) +{ + QWidget::setPalette( palette ); + if( d ) { + if(d->listView()) + d->listView()->setPalette( palette ); + } +} + +/*! + Sets the font for both the combobox button and the combobox popup + list to \a font. +*/ + +void QComboView::setFont( const QFont &font ) +{ + d->sizeHint = QSize(); // invalidate size hint + QWidget::setFont( font ); + d->listView()->setFont( font ); + if (d->ed) + d->ed->setFont( font ); + if ( d->autoresize ) + adjustSize(); +} + + +/*!reimp +*/ + +void QComboView::resizeEvent( QResizeEvent * e ) +{ + if ( d->ed ) + d->updateLinedGeometry(); + d->listView()->resize( width(), d->listView()->height() ); + QWidget::resizeEvent( e ); +} + +/*!reimp +*/ + +void QComboView::paintEvent( QPaintEvent * ) +{ + QPainter p( this ); + const QColorGroup & g = colorGroup(); + p.setPen(g.text()); + + QStyle::SFlags flags = QStyle::Style_Default; + if (isEnabled()) + flags |= QStyle::Style_Enabled; + if (hasFocus()) + flags |= QStyle::Style_HasFocus; + + if ( width() < 5 || height() < 5 ) { + qDrawShadePanel( &p, rect(), g, FALSE, 2, + &g.brush( QColorGroup::Button ) ); + return; + } + +// bool reverse = QApplication::reverseLayout(); + style().drawComplexControl( QStyle::CC_ComboBox, &p, this, rect(), g, + flags, QStyle::SC_All, + (d->arrowDown ? + QStyle::SC_ComboBoxArrow : + QStyle::SC_None )); + + QRect re = style().querySubControlMetrics( QStyle::CC_ComboBox, this, + QStyle::SC_ComboBoxEditField ); + re = QStyle::visualRect(re, this); + p.setClipRect( re ); + + if ( !d->ed ) { + QListViewItem * item = d->current; + if ( item ) { + // we calculate the QListBoxTexts height (ignoring strut) + int itemh = d->listView()->fontMetrics().lineSpacing() + 2; + p.translate( re.x(), re.y() + (re.height() - itemh)/2 ); + item->paintCell( &p, d->listView()->colorGroup(), 0, width(), AlignLeft | AlignVCenter ); + } + } else if ( d->listView() && d->listView()->currentItem( ) && d->current ) { + QListViewItem * item = d->current ; + const QPixmap *pix = item->pixmap(0); + if ( pix ) { + p.fillRect( re.x(), re.y(), pix->width() + 4, re.height(), + colorGroup().brush( QColorGroup::Base ) ); + p.drawPixmap( re.x() + 2, re.y() + + ( re.height() - pix->height() ) / 2, *pix ); + } + } + p.setClipping( FALSE ); +} + + +/*!reimp +*/ + +void QComboView::mousePressEvent( QMouseEvent *e ) +{ + if ( e->button() != LeftButton ) + return; + if ( d->discardNextMousePress ) { + d->discardNextMousePress = FALSE; + return; + } + QRect arrowRect = style().querySubControlMetrics( QStyle::CC_ComboBox, this, + QStyle::SC_ComboBoxArrow); + arrowRect = QStyle::visualRect(arrowRect, this); + + // Correction for motif style, where arrow is smaller + // and thus has a rect that doesn't fit the button. + arrowRect.setHeight( QMAX( height() - (2 * arrowRect.y()), arrowRect.height() ) ); + + if ( childCount() && ( !editable() || arrowRect.contains( e->pos() ) ) ) { + d->arrowPressed = FALSE; + listView()->blockSignals( TRUE ); + qApp->sendEvent( listView(), e ); // trigger the listbox's autoscroll + listView()->blockSignals( FALSE ); + popup(); + if ( arrowRect.contains( e->pos() ) ) { + d->arrowPressed = TRUE; + d->arrowDown = TRUE; + repaint( FALSE ); + } + QTimer::singleShot( 200, this, SLOT(internalClickTimeout())); + d->shortClick = TRUE; + } +} + +/*!reimp +*/ + +void QComboView::mouseMoveEvent( QMouseEvent * ) +{ +} + +/*!reimp +*/ + +void QComboView::mouseReleaseEvent( QMouseEvent * ) +{ +} + +/*!reimp +*/ + +void QComboView::mouseDoubleClickEvent( QMouseEvent *e ) +{ + mousePressEvent( e ); +} + + +/*!reimp +*/ + +void QComboView::keyPressEvent( QKeyEvent *e ) +{ + QListViewItem *c = currentItem(); + if ( ( e->key() == Key_F4 && e->state() == 0 ) || + ( e->key() == Key_Down && (e->state() & AltButton) ) || + ( !d->ed && e->key() == Key_Space ) ) { + if ( childCount() ) { + popup(); + } + return; + } else if ( e->key() == Key_Up ) { +/* if ((!c) && (listView()->firstChild())) + setCurrentItem(listView()->firstChild());*/ + if (c && c->itemAbove() ) + setCurrentItem( c->itemAbove() ); + else + return; + } else if ( e->key() == Key_Down ) { + if ((!c) && (listView()->firstChild())) + { + setCurrentItem(listView()->firstChild()); + return; + } + if ( c && c->itemBelow() ) + setCurrentItem( c->itemBelow() ); + else + return; + } else if ( e->key() == Key_Home && ( !d->ed || !d->ed->hasFocus() ) ) { + if (listView()->firstChild()) + setCurrentItem( listView()->firstChild() ); + else + return; + } else if ( e->key() == Key_End && ( !d->ed || !d->ed->hasFocus() ) ) { + if (listView()->lastItem()) + setCurrentItem( listView()->lastItem() ); + else + return; + } else if ( !d->ed && e->ascii() >= 32 && !e->text().isEmpty() ) { + if ( !d->completionTimer->isActive() ) { + d->completeAt = 0; + c = completionIndex( e->text(), c->itemBelow() ); + if ( c ) { + setCurrentItem( c ); + d->completeAt = e->text().length(); + } + else + return; + } else { + d->completionTimer->stop(); + QString ct = currentText().left( d->completeAt ) + e->text(); + c = completionIndex( ct, c ); + if ( c == 0 && d->completeAt > 0 ) { + c = completionIndex( e->text(), listView()->firstChild() ); + ct = e->text(); + } + d->completeAt = 0; + if ( c ) { + setCurrentItem( c ); + d->completeAt = ct.length(); + } + else + return; + } + d->completionTimer->start( 400, TRUE ); + } else { + e->ignore(); + return; + } + + c = currentItem(); + if ( childCount() && c && !c->text(0).isNull() ) + emit activated( c->text(0) ); + emit activated( c ); +} + +QString QComboView::currentText() const +{ + if ( d->ed ) + return d->ed->text(); + else if ( d->current ) + return currentItem()->text(0); + else + return QString::null; +} + +/*!reimp +*/ + +void QComboView::focusInEvent( QFocusEvent * e ) +{ + QWidget::focusInEvent( e ); + d->completeNow = FALSE; + d->completeAt = 0; + + emit focusGranted(); +} + +/*!reimp +*/ + +void QComboView::focusOutEvent( QFocusEvent * e ) +{ + QWidget::focusOutEvent( e ); + d->completeNow = FALSE; + d->completeAt = 0; + + emit focusLost(); +} + +/*!reimp +*/ + +void QComboView::wheelEvent( QWheelEvent *e ) +{ + if ( d->poppedUp ) { + QApplication::sendEvent( d->listView(), e ); + } else { + if ( e->delta() > 0 ) { + QListViewItem *c = currentItem(); + if ( c && c->itemAbove() ) { + setCurrentItem( c->itemAbove() ); + emit activated( currentItem() ); + emit activated( currentText() ); + } + } else { + QListViewItem *c = currentItem(); + if ( c && c->itemBelow() ) { + setCurrentItem( c->itemBelow() ); + emit activated( currentItem() ); + emit activated( currentText() ); + } + } + e->accept(); + } +} + +int childCount(QListViewItem *it) +{ + int count = 1; + QListViewItem * myChild = it->firstChild(); + while( myChild ) { + count += childCount(myChild); + myChild = myChild->nextSibling(); + } + return count; +} + +int childCount(QListView *lv) +{ + int count = 0; + QListViewItem * myChild = lv->firstChild(); + while( myChild ) { + count += childCount(myChild); +// count += 1; + myChild = myChild->nextSibling(); + } + return count; +} + +/*! + \internal + Calculates the listbox height needed to contain all items, or as + many as the list box is supposed to contain. +*/ +static int listHeight( QListView *l, int /*sl*/ ) +{ +/* if ( l->childCount() > 0 ) + return QMIN( l->childCount(), (uint)sl) * l->firstChild()->height(); + else*/ + + int prefH = 0; + int ch = childCount(l); + ch = QMIN(ch, 10); + if (l->firstChild()) + { + prefH = ch * l->firstChild()->height(); + } + else + prefH = l->sizeHint().height(); + + if (l->header()->isVisible()) + prefH += l->header()->sizeHint().height(); + +// return prefH < l->sizeHint().height() ? prefH : l->sizeHint().height(); + + return prefH+2; +} + +/*! + Pops up the combobox popup list. + + If the list is empty, no items appear. +*/ + +void QComboView::popup() +{ + if ( !childCount() ) + return; + + // Send all listbox events to eventFilter(): + QListView* lb = d->listView(); + lb->triggerUpdate( ); + lb->installEventFilter( this ); + lb->viewport()->installEventFilter( this ); + d->mouseWasInsidePopup = FALSE; +// int w = lb->variableWidth() ? lb->sizeHint().width() : width(); + int w = width(); + int h = listHeight( lb, d->sizeLimit ); + QRect screen = QApplication::desktop()->availableGeometry( const_cast<QComboView*>(this) ); + + int sx = screen.x(); // screen pos + int sy = screen.y(); + int sw = screen.width(); // screen width + int sh = screen.height(); // screen height + QPoint pos = mapToGlobal( QPoint(0,height()) ); + // ## Similar code is in QPopupMenu + int x = pos.x(); + int y = pos.y(); + + // the complete widget must be visible + if ( x + w > sx + sw ) + x = sx+sw - w; + if ( x < sx ) + x = sx; + if (y + h > sy+sh && y - h - height() >= 0 ) + y = y - h - height(); + QRect rect = + style().querySubControlMetrics( QStyle::CC_ComboBox, this, + QStyle::SC_ComboBoxListBoxPopup, + QStyleOption( x, y, w, h ) ); + if ( rect.isNull() ) + rect.setRect( x, y, w, h ); + lb->setGeometry( rect ); + + lb->raise(); + bool block = lb->signalsBlocked(); + lb->blockSignals( TRUE ); + QListViewItem *currentLBItem = d->current ; + lb->setCurrentItem( currentLBItem ); + // set the current item to also be the selected item if it isn't already + if ( currentLBItem && currentLBItem->isSelectable() && !currentLBItem->isSelected() ) + lb->setSelected( currentLBItem, TRUE ); + lb->blockSignals( block ); + lb->setVScrollBarMode(QScrollView::Auto); + +//#ifndef QT_NO_EFFECTS +/* if ( QApplication::isEffectEnabled( UI_AnimateCombo ) ) { + if ( lb->y() < mapToGlobal(QPoint(0,0)).y() ) + qScrollEffect( lb, QEffects::UpScroll ); + else + qScrollEffect( lb ); + } else*/ +//#endif + lb->show(); + d->poppedUp = TRUE; +} + + +/*! + reimp +*/ +void QComboView::updateMask() +{ + QBitmap bm( size() ); + bm.fill( color0 ); + + { + QPainter p( &bm, this ); + style().drawComplexControlMask(QStyle::CC_ComboBox, &p, this, rect()); + } + + setMask( bm ); +} + +/*! + \internal + Pops down (removes) the combobox popup list box. +*/ +void QComboView::popDownListView() +{ + d->listView()->removeEventFilter( this ); + d->listView()->viewport()->removeEventFilter( this ); + d->listView()->hide(); + d->listView()->setCurrentItem( d->current ); + if ( d->arrowDown ) { + d->arrowDown = FALSE; + repaint( FALSE ); + } + d->poppedUp = FALSE; +} + + +/*! + \internal + Re-indexes the identifiers in the popup list. +*/ + +void QComboView::reIndex() +{ +} + +/*! + \internal + Repaints the combobox. +*/ + +void QComboView::currentChanged() +{ + if ( d->autoresize ) + adjustSize(); + update(); +} + +/*! reimp + + \internal + + The event filter steals events from the popup or listbox when they + are popped up. It makes the popup stay up after a short click in + motif style. In windows style it toggles the arrow button of the + combobox field, and activates an item and takes down the listbox + when the mouse button is released. +*/ + +bool QComboView::eventFilter( QObject *object, QEvent *event ) +{ + if ( !event ) + return TRUE; + else if ( object == d->ed ) { + if ( event->type() == QEvent::KeyPress ) { + bool isAccepted = ( (QKeyEvent*)event )->isAccepted(); + keyPressEvent( (QKeyEvent *)event ); + if ( ((QKeyEvent *)event)->isAccepted() ) { + d->completeNow = FALSE; + return TRUE; + } else if ( ((QKeyEvent *)event)->key() != Key_End ) { + d->completeNow = TRUE; + d->completeAt = d->ed->cursorPosition(); + } + if ( isAccepted ) + ( (QKeyEvent*)event )->accept(); + else + ( (QKeyEvent*)event )->ignore(); + } else if ( event->type() == QEvent::KeyRelease ) { + d->completeNow = FALSE; + keyReleaseEvent( (QKeyEvent *)event ); + return ((QKeyEvent *)event)->isAccepted(); + } else if ( event->type() == QEvent::FocusIn ) { + focusInEvent( (QFocusEvent *)event ); + } else if ( event->type() == QEvent::FocusOut ) { + focusOutEvent( (QFocusEvent *)event ); + } else if ( d->useCompletion && d->completeNow ) { + if ( !d->ed->text().isNull() && + d->ed->cursorPosition() > d->completeAt && + d->ed->cursorPosition() == (int)d->ed->text().length() ) { + d->completeNow = FALSE; + QString ct( d->ed->text() ); + QListViewItem *i = completionIndex( ct, currentItem() ); + if ( i ) { + QString it = i->text(0); + d->ed->validateAndSet( it, ct.length(), + ct.length(), it.length() ); + } + } + } + } else if ( ( object == d->listView() || + object == d->listView()->viewport() )) { + QMouseEvent *e = (QMouseEvent*)event; + switch( event->type() ) { + case QEvent::MouseMove: + if ( !d->mouseWasInsidePopup ) { +// qWarning("!d->mouseWasInsidePopup"); + QPoint pos = e->pos(); + if ( d->listView()->rect().contains( pos ) ) + d->mouseWasInsidePopup = TRUE; + // Check if arrow button should toggle + if ( d->arrowPressed ) { + QPoint comboPos; + comboPos = mapFromGlobal( d->listView()->mapToGlobal(pos) ); + QRect arrowRect = + style().querySubControlMetrics( QStyle::CC_ComboBox, this, + QStyle::SC_ComboBoxArrow); + arrowRect = QStyle::visualRect(arrowRect, this); + if ( arrowRect.contains( comboPos ) ) { + if ( !d->arrowDown ) { + d->arrowDown = TRUE; + repaint( FALSE ); + } + } else { + if ( d->arrowDown ) { + d->arrowDown = FALSE; + repaint( FALSE ); + } + } + } + } else if ((e->state() & ( RightButton | LeftButton | MidButton ) ) == 0 && + style().styleHint(QStyle::SH_ComboBox_ListMouseTracking, this)) { +// qWarning("event filter:: emu"); + QWidget *mouseW = QApplication::widgetAt( e->globalPos(), TRUE ); +// if ( mouseW == d->listView()->viewport() ) { //### + if ( mouseW == d->listView()->viewport() ) { + QListViewItem *sel = d->listView()->itemAt(e->pos()); + if (sel) + { + d->listView()->setCurrentItem(sel); + d->listView()->setSelected(sel, true); + } + return TRUE; + } + } + + break; + case QEvent::MouseButtonRelease: + if ( d->listView()->rect().contains( e->pos() ) ) { + QMouseEvent tmp( QEvent::MouseButtonDblClick, + e->pos(), e->button(), e->state() ) ; + // will hide popup + QApplication::sendEvent( object, &tmp ); + return TRUE; + } else { + if ( d->mouseWasInsidePopup ) { + popDownListView(); + } else { + d->arrowPressed = FALSE; + if ( d->arrowDown ) { + d->arrowDown = FALSE; + repaint( FALSE ); + } + } + } + break; + case QEvent::MouseButtonDblClick: + case QEvent::MouseButtonPress: + if ( !d->listView()->rect().contains( e->pos() ) ) { + QPoint globalPos = d->listView()->mapToGlobal(e->pos()); + if ( QApplication::widgetAt( globalPos, TRUE ) == this ) { + d->discardNextMousePress = TRUE; + // avoid popping up again + } + popDownListView(); + return TRUE; + } + break; + case QEvent::KeyPress: + switch( ((QKeyEvent *)event)->key() ) { + case Key_Up: + case Key_Down: + if ( !(((QKeyEvent *)event)->state() & AltButton) ) + break; + case Key_F4: + case Key_Escape: + if ( d->poppedUp ) { + popDownListView(); + return TRUE; + } + break; + case Key_Enter: + case Key_Return: + // work around QDialog's enter handling + return FALSE; + default: + break; + } + break; + case QEvent::Hide: + popDownListView(); + break; + default: + break; + } + } + return QWidget::eventFilter( object, event ); +} + + +/*! + Returns the index of the first item \e after \a startingAt of + which \a prefix is a case-insensitive prefix. Returns -1 if no + items start with \a prefix. +*/ + +QListViewItem *QComboView::completionIndex( const QString & prefix, + QListViewItem *startingAt ) const +{ + QListViewItem *start = startingAt; +/* if ( start < 0 || start >= count() ) + start = 0; + if ( start >= count() ) + return -1;*/ + if (!start) + start = listView()->firstChild(); + if (!start) + return 0; +/* if (!start->itemBelow()) + return 0;*/ + QString match = prefix.lower(); + if ( match.length() < 1 ) + return start; + + QString current; + QListViewItem *i = start; + do { + current = i->text(0).lower(); + if ( current.startsWith( match ) ) + return i; + i = i->itemBelow(); + if ( i ) + i = listView()->firstChild(); + } while ( i != start ); + return 0; +} + + +int QComboView::sizeLimit() const +{ + return d ? d->sizeLimit : INT_MAX; +} + +void QComboView::setSizeLimit( int lines ) +{ + d->sizeLimit = lines; +} + + +/*int QComboView::maxCount() const +{ + return d ? d->maxCount : INT_MAX; +} + +void QComboView::setMaxCount( int count ) +{ + int l = this->count(); + while( --l > count ) + removeItem( l ); + d->maxCount = count; +} +*/ +QComboView::Policy QComboView::insertionPolicy() const +{ + return d->p; +} + +void QComboView::setInsertionPolicy( Policy policy ) +{ + d->p = policy; +} + + + +/*! + Internal slot to keep the line editor up to date. +*/ + +void QComboView::returnPressed() +{ + QString s( d->ed->text() ); + + if ( s.isEmpty() ) + return; + + QListViewItem *c = 0; + bool doInsert = TRUE; + if ( !d->duplicatesEnabled ) { + c = listView()->findItem(s, 0); + if ( c ) + doInsert = FALSE; + } + + if ( doInsert ) { + if ( insertionPolicy() != NoInsertion ) { +/* int cnt = count(); + while ( cnt >= d->maxCount ) { + removeItem( --cnt ); + }*/ + } + + switch ( insertionPolicy() ) { + case AtCurrent: + if ( s != currentItem()->text(0) ) + currentItem()->setText(0, s); + emit activated( currentItem() ); + emit activated( s ); + return; + case NoInsertion: + emit activated( s ); + return; + case AtTop: + c = 0; + return; +// break; + case AtBottom: + c = new QListViewItem(listView(), listView()->lastItem(), s); + break; + case BeforeCurrent: + if (currentItem() && currentItem()->itemAbove()) + c = new QListViewItem(listView(), currentItem()->itemAbove(), s); + else + { + c = 0; + return; + } + break; + case AfterCurrent: + if (currentItem() && currentItem()->itemBelow()) + c = new QListViewItem(listView(), currentItem()->itemBelow(), s); + else + { + c = 0; + return; + } + break; + } + } + + if (c) + { + setCurrentItem( c ); + emit activated( c ); + emit activated( s ); + } +} + + +/*! reimp +*/ + +void QComboView::setEnabled( bool enable ) +{ + QWidget::setEnabled( enable ); +} + + + +/*! + Applies the validator \a v to the combobox so that only text which + is valid according to \a v is accepted. + + This function does nothing if the combobox is not editable. + + \sa validator() clearValidator() QValidator +*/ + +void QComboView::setValidator( const QValidator * v ) +{ + if ( d && d->ed ) + d->ed->setValidator( v ); +} + + +/*! + Returns the validator which constrains editing for this combobox + if there is one; otherwise returns 0. + + \sa setValidator() clearValidator() QValidator +*/ + +const QValidator * QComboView::validator() const +{ + return d && d->ed ? d->ed->validator() : 0; +} + + +/*! + This slot is equivalent to setValidator( 0 ). +*/ + +void QComboView::clearValidator() +{ + if ( d && d->ed ) + d->ed->setValidator( 0 ); +} + + +/*! + Sets the combobox to use \a newListBox instead of the current list + box or popup. As a side effect, it clears the combobox of its + current contents. + + \warning QComboView assumes that newListBox->text(n) returns + non-null for 0 \<= n \< newListbox->count(). This assumption is + necessary because of the line edit in QComboView. +*/ + +void QComboView::setListView( QListView * newListView ) +{ + clear(); + + delete d->listView(); + + newListView->reparent( this, WType_Popup, QPoint(0,0), FALSE ); + d->setListView( newListView ); + d->listView()->setFont( font() ); + d->listView()->setPalette( palette() ); +/* d->listView()->setVScrollBarMode(QScrollView::AlwaysOff); + d->listView()->setHScrollBarMode(QScrollView::AlwaysOff);*/ + d->listView()->setFrameStyle( QFrame::Box | QFrame::Plain ); + d->listView()->setLineWidth( 1 ); +/* d->listView()->setRootIsDecorated( true ); + d->listView()->setAllColumnsShowFocus(true);*/ + d->listView()->resize( 100, 10 ); + + if (d->listView()->firstChild()) + d->current = d->listView()->firstChild(); + +// d->listView()->header()->hide(); + + +/* d->listView()->setFont( font() ); + d->listView()->setPalette( palette() ); + d->listView()->setVScrollBarMode( QScrollView::AlwaysOff ); + d->listView()->setHScrollBarMode( QScrollView::AlwaysOff ); + d->listView()->setFrameStyle( QFrame::Box | QFrame::Plain ); + d->listView()->setLineWidth( 1 ); + d->listView()->setRootIsDecorated( true ); + d->listView()->setAllColumnsShowFocus(true); + d->listView()->addColumn(""); + d->listView()->resize( 100, 10 ); +*/ + + connect( d->listView(), SIGNAL(returnPressed(QListViewItem*)), + SLOT(internalActivate(QListViewItem*))); + connect( d->listView(), SIGNAL(doubleClicked(QListViewItem*)), + SLOT(internalActivate(QListViewItem*))); + connect( d->listView(), SIGNAL(doubleClicked(QListViewItem*)), + SLOT(checkState(QListViewItem*))); + connect( d->listView(), SIGNAL(currentChanged(QListViewItem*)), + SLOT(internalHighlight(QListViewItem*))); + connect( d->listView(), SIGNAL(selectionChanged(QListViewItem*)), + SLOT(internalHighlight(QListViewItem*))); +} + + +/*! + Returns the current list box, or 0 if there is no list box. + (QComboView can use QPopupMenu instead of QListBox.) Provided to + match setlistView(). + + \sa setlistView() +*/ + +QListView * QComboView::listView() const +{ + return d ? d->listView() : 0; +} + +/*! + Returns the line edit, or 0 if there is no line edit. + + Only editable listboxes have a line editor. +*/ +QLineEdit* QComboView::lineEdit() const +{ + return d->ed; +} + + + +/*! + Clears the line edit without changing the combobox's contents. + Does nothing if the combobox isn't editable. + + This is particularly useful when using a combobox as a line edit + with history. For example you can connect the combobox's + activated() signal to clearEdit() in order to present the user + with a new, empty line as soon as Enter is pressed. + + \sa setEditText() +*/ + +void QComboView::clearEdit() +{ + if ( d && d->ed ) + d->ed->clear(); +} + + +/*! + Sets the text in the line edit to \a newText without changing the + combobox's contents. Does nothing if the combobox isn't editable. + + This is useful e.g. for providing a good starting point for the + user's editing and entering the change in the combobox only when + the user presses Enter. + + \sa clearEdit() insertItem() +*/ + +void QComboView::setEditText( const QString &newText ) +{ + if ( d && d->ed ) { + d->updateLinedGeometry(); + d->ed->setText( newText ); + } +} + +void QComboView::setAutoCompletion( bool enable ) +{ + d->useCompletion = enable; + d->completeNow = FALSE; +} + + +bool QComboView::autoCompletion() const +{ + return d->useCompletion; +} + +/*!reimp + */ +void QComboView::styleChange( QStyle& s ) +{ + d->sizeHint = QSize(); // invalidate size hint... + if ( d->ed ) + d->updateLinedGeometry(); + QWidget::styleChange( s ); +} + +bool QComboView::editable() const +{ + return d->ed != 0; +} + +void QComboView::setEditable( bool y ) +{ + if ( y == editable() ) + return; + if ( y ) { + setUpListView(); + setUpLineEdit(); + d->ed->show(); + if ( currentItem() ) + setEditText( currentText() ); + } else { + delete d->ed; + d->ed = 0; + } + + setFocusPolicy( StrongFocus ); + updateGeometry(); + update(); +} + + +void QComboView::setUpListView() +{ + d->setListView( new QListView( this, "in-combo", WType_Popup ) ); + + d->listView()->setFont( font() ); + d->listView()->setPalette( palette() ); +/* d->listView()->setVScrollBarMode( QScrollView::AlwaysOff ); + d->listView()->setHScrollBarMode( QScrollView::AlwaysOff );*/ + d->listView()->setFrameStyle( QFrame::Box | QFrame::Plain ); + d->listView()->setLineWidth( 1 ); + d->listView()->setRootIsDecorated( false ); + d->listView()->setAllColumnsShowFocus(true); + d->listView()->addColumn(""); + d->listView()->resize( 100, 10 ); + d->listView()->setResizeMode(QListView::LastColumn); + + if (d->listView()->firstChild()) + d->current = d->listView()->firstChild(); + + d->listView()->header()->hide(); + + connect( d->listView(), SIGNAL(returnPressed(QListViewItem*)), + SLOT(internalActivate(QListViewItem*))); + connect( d->listView(), SIGNAL(doubleClicked(QListViewItem*)), + SLOT(internalActivate(QListViewItem*))); + connect( d->listView(), SIGNAL(doubleClicked(QListViewItem*)), + SLOT(checkState(QListViewItem*))); + connect( d->listView(), SIGNAL(currentChanged(QListViewItem*)), + SLOT(internalHighlight(QListViewItem*))); + connect( d->listView(), SIGNAL(selectionChanged(QListViewItem*)), + SLOT(internalHighlight(QListViewItem*))); +} + + +void QComboView::setUpLineEdit() +{ + if ( !d->ed ) + setLineEdit( new QLineEdit( this, "combo edit" ) ); +} + +/*! + Sets the line edit to use \a edit instead of the current line edit. +*/ + +void QComboView::setLineEdit( QLineEdit *edit ) +{ + if ( !edit ) { +#if defined(QT_CHECK_NULL) + Q_ASSERT( edit != 0 ); +#endif + return; + } + + edit->setText( currentText() ); + if ( d->ed ) { + int start = 0, end = 0; + d->ed->getSelection( &start, &end ); + edit->setSelection( start, end ); + edit->setCursorPosition( d->ed->cursorPosition() ); + edit->setEdited( d->ed->edited() ); + delete d->ed; + } + + d->ed = edit; + + if ( edit->parent() != this ) { + edit->reparent( this, QPoint(0,0), FALSE ); + edit->setFont( font() ); + } + + connect (edit, SIGNAL( textChanged( const QString& ) ), + this, SIGNAL( textChanged( const QString& ) ) ); + connect( edit, SIGNAL(returnPressed()), SLOT(returnPressed()) ); + + edit->setFrame( FALSE ); + d->updateLinedGeometry(); + edit->installEventFilter( this ); + setFocusProxy( edit ); + setFocusPolicy( StrongFocus ); + + setUpListView(); + + if ( isVisible() ) + edit->show(); + + updateGeometry(); + update(); +} + +void QComboView::setCurrentText( const QString& txt ) +{ + QListViewItem *i; + i = listView()->findItem(txt, 0); + if ( i ) + setCurrentItem( i ); + else if ( d->ed ) + d->ed->setText( txt ); + else if (currentItem()) + currentItem()->setText(0, txt); +} + +void QComboView::checkState( QListViewItem * item) +{ + item->setOpen(!item->isOpen()); +} + +void QComboView::setCurrentActiveItem( QListViewItem * item ) +{ + if ( item == d->current && !d->ed ) { + return; + } + + d->current = item; + d->completeAt = 0; + if ( d->ed ) { + d->ed->setText( item->text(0) ); + d->ed->setCursorPosition(0); +// qWarning("setCurrentActiveItem( %s )", item->text(0).latin1()); + d->updateLinedGeometry(); + } + if ( d->listView() ) { + d->listView()->setCurrentItem( item ); + emit activated( item ); + emit activated( item->text(0) ); + } else { + internalHighlight( item ); + internalActivate( item ); + } + + currentChanged(); + + d->listView()->ensureItemVisible(item); +} + +#include "qcomboview.moc" + +#endif // QT_NO_COMBOBOX + |