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qt3-extensions
qt3-trinity-fix-iconview-widget.patch
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File qt3-trinity-fix-iconview-widget.patch of Package qt3-extensions
From d6867cf92e3f65b61a7289a478f97910b9fa4965 Mon Sep 17 00:00:00 2001 From: Michele Calgaro <michele.calgaro@yahoo.it> Date: Mon, 13 Jul 2015 05:17:42 +0000 Subject: Fixed search algorithm for iconview widget. This resolves bug 420. Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it> --- diff --git a/doc/html/qiconview-h.html b/doc/html/qiconview-h.html index a5d1be6..f100cec 100644 --- a/doc/html/qiconview-h.html +++ b/doc/html/qiconview-h.html @@ -522,12 +522,7 @@ private: DirLeft, DirRight }; - QIconViewItem* findItem( Direction dir, - const QPoint &relativeTo, - const QRect &searchRect ) const; - bool neighbourItem( Direction dir, - const QPoint &relativeTo, - const QIconViewItem *item ) const; + QIconViewItem* findItem(Direction dir, const QIconViewItem *fromItem) const; QBitmap mask( QPixmap *pix ) const; QIconViewPrivate *d; diff --git a/src/iconview/qiconview.cpp b/src/iconview/qiconview.cpp index a05ec34..790302a 100644 --- a/src/iconview/qiconview.cpp +++ b/src/iconview/qiconview.cpp @@ -287,74 +287,8 @@ public: struct SortableItem { QIconViewItem *item; }; - -public: - - /* finds the containers that intersect with \a searchRect in the direction \a dir relative to \a relativeTo */ - QPtrList<ItemContainer>* findContainers( - QIconView:: Direction dir, - const QPoint &relativeTo, - const QRect &searchRect ) const; - // friend int cmpIconViewItems( const void *n1, const void *n2 ); }; - -QPtrList<QIconViewPrivate::ItemContainer>* QIconViewPrivate::findContainers( - QIconView:: Direction dir, - const QPoint &relativeTo, - const QRect &searchRect ) const -{ - - QPtrList<QIconViewPrivate::ItemContainer>* list = - new QPtrList<QIconViewPrivate::ItemContainer>(); - - if ( arrangement == QIconView::LeftToRight ) { - if ( dir == QIconView::DirLeft || dir == QIconView::DirRight ) { - ItemContainer *c = firstContainer; - for ( ; c; c = c->n ) - if ( c->rect.intersects( searchRect ) ) - list->append( c ); - } else { - if ( dir == QIconView::DirDown ) { - ItemContainer *c = firstContainer; - for ( ; c; c = c->n ) - if ( c->rect.intersects( searchRect ) && - c->rect.bottom() >= relativeTo.y() ) - list->append( c ); - } else { - ItemContainer *c = lastContainer; - for ( ; c; c = c->p ) - if ( c->rect.intersects( searchRect ) && - c->rect.top() <= relativeTo.y() ) - list->append( c ); - } - } - } else { - if ( dir == QIconView::DirUp || dir == QIconView::DirDown ) { - ItemContainer *c = firstContainer; - for ( ; c; c = c->n ) - if ( c->rect.intersects( searchRect ) ) - list->append( c ); - } else { - if ( dir == QIconView::DirRight ) { - ItemContainer *c = firstContainer; - for ( ; c; c = c->n ) - if ( c->rect.intersects( searchRect ) && - c->rect.right() >= relativeTo.x() ) - list->append( c ); - } else { - ItemContainer *c = lastContainer; - for ( ; c; c = c->p ) - if ( c->rect.intersects( searchRect ) && - c->rect.left() <= relativeTo.x() ) - list->append( c ); - } - } - } - return list; -} - - #if defined(Q_C_CALLBACKS) extern "C" { #endif @@ -5106,6 +5040,7 @@ void QIconView::keyPressEvent( QKeyEvent *e ) } } break; #endif + case Key_Home: { d->currInputString = QString::null; if ( !d->firstItem ) @@ -5150,6 +5085,7 @@ void QIconView::keyPressEvent( QKeyEvent *e ) e->state() & ControlButton, TRUE ); } } break; + case Key_End: { d->currInputString = QString::null; if ( !d->lastItem ) @@ -5193,50 +5129,7 @@ void QIconView::keyPressEvent( QKeyEvent *e ) e->state() & ControlButton, TRUE ); } } break; - case Key_Right: { - d->currInputString = QString::null; - QIconViewItem *item; - selectCurrent = FALSE; - Direction dir = DirRight; - - QRect r( 0, d->currentItem->y(), contentsWidth(), d->currentItem->height() ); - item = findItem( dir, d->currentItem->rect().center(), r ); - - // search the row below from the right - while ( !item && r.y() < contentsHeight() ) { - r.moveBy(0, d->currentItem->height() ); - item = findItem( dir, QPoint( 0, r.center().y() ), r ); - } - - if ( item ) { - QIconViewItem *old = d->currentItem; - setCurrentItem( item ); - ensureItemVisible( item ); - handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton ); - } - } break; - case Key_Left: { - d->currInputString = QString::null; - QIconViewItem *item; - selectCurrent = FALSE; - Direction dir = DirLeft; - - QRect r( 0, d->currentItem->y(), contentsWidth(), d->currentItem->height() ); - item = findItem( dir, d->currentItem->rect().center(), r ); - - // search the row above from the left - while ( !item && r.y() >= 0 ) { - r.moveBy(0, - d->currentItem->height() ); - item = findItem( dir, QPoint( contentsWidth(), r.center().y() ), r ); - } - - if ( item ) { - QIconViewItem *old = d->currentItem; - setCurrentItem( item ); - ensureItemVisible( item ); - handleItemChange( old, e->state() & ShiftButton, e->state() & ControlButton ); - } - } break; + case Key_Space: { d->currInputString = QString::null; if ( d->selectionMode == Single) @@ -5244,51 +5137,65 @@ void QIconView::keyPressEvent( QKeyEvent *e ) d->currentItem->setSelected( !d->currentItem->isSelected(), TRUE ); } break; - case Key_Enter: case Key_Return: + + case Key_Enter: + case Key_Return: d->currInputString = QString::null; emit returnPressed( d->currentItem ); break; + + case Key_Right: { + d->currInputString = QString::null; + selectCurrent = FALSE; + Direction dir = DirRight; + QIconViewItem *item = findItem(dir, d->currentItem); + if (item) { + QIconViewItem *old=d->currentItem; + setCurrentItem(item); + ensureItemVisible(item); + handleItemChange(old, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + + case Key_Left: { + d->currInputString = QString::null; + selectCurrent = FALSE; + Direction dir = DirLeft; + QIconViewItem *item = findItem(dir, d->currentItem); + if (item) { + QIconViewItem *old=d->currentItem; + setCurrentItem(item); + ensureItemVisible(item); + handleItemChange(old, e->state() & ShiftButton, e->state() & ControlButton ); + } + } break; + case Key_Down: { d->currInputString = QString::null; - QIconViewItem *item; selectCurrent = FALSE; Direction dir = DirDown; - - QRect r( d->currentItem->x(), 0, d->currentItem->width(), contentsHeight() ); - item = findItem( dir, d->currentItem->rect().center(), r ); - - // finding the closest item below and to the right - while ( !item && r.x() < contentsWidth() ) { - r.moveBy( r.width() , 0 ); - item = findItem( dir, QPoint( r.center().x(), 0 ), r ); - } - - - QIconViewItem *i = d->currentItem; - setCurrentItem( item ); - item = i; - handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + QIconViewItem *item = findItem(dir, d->currentItem); + if (item) { + QIconViewItem *old=d->currentItem; + setCurrentItem(item); + ensureItemVisible(item); + handleItemChange(old, e->state() & ShiftButton, e->state() & ControlButton ); + } } break; + case Key_Up: { d->currInputString = QString::null; - QIconViewItem *item; selectCurrent = FALSE; Direction dir = DirUp; - - QRect r( d->currentItem->x(), 0, d->currentItem->width(), contentsHeight() ); - item = findItem( dir, d->currentItem->rect().center(), r ); - - // finding the closest item above and to the left - while ( !item && r.x() >= 0 ) { - r.moveBy(- r.width(), 0 ); - item = findItem( dir, QPoint(r.center().x(), contentsHeight() ), r ); - } - - QIconViewItem *i = d->currentItem; - setCurrentItem( item ); - item = i; - handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); + QIconViewItem *item = findItem(dir, d->currentItem); + if (item) { + QIconViewItem *old=d->currentItem; + setCurrentItem(item); + ensureItemVisible(item); + handleItemChange(old, e->state() & ShiftButton, e->state() & ControlButton ); + } } break; + case Key_Next: { d->currInputString = QString::null; selectCurrent = FALSE; @@ -5311,6 +5218,7 @@ void QIconView::keyPressEvent( QKeyEvent *e ) handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); } } break; + case Key_Prior: { d->currInputString = QString::null; selectCurrent = FALSE; @@ -5333,6 +5241,7 @@ void QIconView::keyPressEvent( QKeyEvent *e ) handleItemChange( item, e->state() & ShiftButton, e->state() & ControlButton ); } } break; + default: if ( !e->text().isEmpty() && e->text()[ 0 ].isPrint() ) { selectCurrent = FALSE; @@ -5403,79 +5312,195 @@ void QIconView::keyPressEvent( QKeyEvent *e ) } /* - Finds the closest item in the Direction \a dir relative from the point \a relativeTo - which intersects with the searchRect. - - The function choses the closest item with its center in the searchRect. + Finds the closest item in the direction \a dir starting from the specified \a fromItem. + If the arrangement is LeftToRight (icon view mode): use center as item reference + If the arrangement is TopToBottom (multicolumn view mode): use left top corner as item reference */ -QIconViewItem* QIconView::findItem( Direction dir, - const QPoint &relativeTo, - const QRect &searchRect ) const +QIconViewItem* QIconView::findItem(Direction dir, const QIconViewItem *fromItem) const { - QIconViewItem *item; - QIconViewItem *centerMatch = 0; - int centerMatchML = 0; - - // gets list of containers with potential items - QPtrList<QIconViewPrivate::ItemContainer>* cList = - d->findContainers( dir, relativeTo, searchRect); - - cList->first(); - while ( cList->current() && !centerMatch ) { - QPtrList<QIconViewItem> &list = (cList->current())->items; - for ( item = list.first(); item; item = list.next() ) { - if ( neighbourItem( dir, relativeTo, item ) && - searchRect.contains( item->rect().center() ) && - item != currentItem() ) { - int ml = (relativeTo - item->rect().center()).manhattanLength(); - if ( centerMatch ) { - if ( ml < centerMatchML ) { - centerMatch = item; - centerMatchML = ml; - } - } else { - centerMatch = item; - centerMatchML = ml; - } - } - } - cList->next(); + QIconViewItem *closestItem=NULL; + int distPri=0, distSec=0; + int itemDistancePri=0, itemDistanceSec=0; + + QPoint pos; + if (d->arrangement == LeftToRight) { + pos=fromItem->rect().center(); } - delete cList; - return centerMatch; -} - - -/* - Returns TRUE if the items orientation compared to - the point \a relativeTo is correct. -*/ -bool QIconView::neighbourItem( Direction dir, - const QPoint &relativeTo, - const QIconViewItem *item ) const -{ - switch ( dir ) { - case DirUp: - if ( item->rect().center().y() < relativeTo.y() ) - return TRUE; - break; - case DirDown: - if ( item->rect().center().y() > relativeTo.y() ) - return TRUE; - break; - case DirLeft: - if ( item->rect().center().x() < relativeTo.x() ) - return TRUE; - break; - case DirRight: - if ( item->rect().center().x() > relativeTo.x() ) - return TRUE; - break; - default: - // nothing - break; + else { + pos=fromItem->rect().topLeft(); } - return FALSE; + + QRect searchRect; + switch (dir) { + case DirDown: + searchRect.setCoords(pos.x(), 0, contentsWidth(), contentsHeight()); + break; + + case DirUp: + searchRect.setCoords(0, 0, pos.x(), contentsHeight()); + break; + + case DirRight: + searchRect.setCoords(0, pos.y(), contentsWidth(), contentsHeight()); + break; + + case DirLeft: + searchRect.setCoords(0, 0, contentsWidth(), pos.y()); + break; + } + + for (QIconViewPrivate::ItemContainer *c=d->firstContainer; c; c=c->n) { + if (c->rect.intersects(searchRect)) { + QPtrList<QIconViewItem> &list = c->items; + for (QIconViewItem *item=list.first(); item; item=list.next()) { + if (item != fromItem) { + bool itemOK = true; + const QRect &ir = item->rect(); + // DirDown/DirUp : primary distance X, secondary distance Y + // DirLeft/DirRight: primary distance Y, secondary distance X + if (d->arrangement == LeftToRight) { + // Left to right arrangement (icon view mode): use center as item reference + switch (dir) { + case DirDown: + if (ir.center().x() > pos.x()) { + distPri = ir.center().x()-pos.x(); + distSec = ir.center().y(); + } + else if (ir.center().x() == pos.x() && ir.center().y() > pos.y()) { + distPri = 0; + distSec = ir.center().y()-pos.y(); + } + else { + itemOK = false; + } + break; + + case DirUp: + if (ir.center().x() < pos.x()) { + distPri = pos.x()-ir.center().x(); + distSec = contentsHeight()-ir.center().y(); + } + else if (ir.center().x() == pos.x() && ir.center().y() < pos.y()) { + distPri = 0; + distSec = pos.y()-ir.center().y(); + } + else { + itemOK = false; + } + break; + + case DirRight: + if (ir.center().y() > pos.y()) { + distPri = ir.center().y()-pos.y(); + distSec = ir.center().x(); + } + else if (ir.center().y() == pos.y() && ir.center().x() > pos.x()) { + distPri = 0; + distSec = ir.center().x()-pos.x(); + } + else { + itemOK = false; + } + break; + + case DirLeft: + if (ir.center().y() < pos.y()) { + distPri = pos.y()-ir.center().y(); + distSec = contentsWidth()-ir.center().x(); + } + else if (ir.center().y() == pos.y() && ir.center().x() < pos.x()) { + distPri = 0; + distSec = pos.x()-ir.center().x(); + } + else { + itemOK = false; + } + break; + + default: + itemOK = false; + break; + } + } + else { + // Top to bottom arrangement (multicolumn view mode): use left top corner as item reference + switch (dir) { + case DirDown: + if (ir.left() > pos.x()) { + distPri = ir.left()-pos.x(); + distSec = ir.top(); + } + else if (ir.left() == pos.x() && ir.top() > pos.y()) { + distPri = 0; + distSec = ir.top()-pos.y(); + } + else { + itemOK = false; + } + break; + + case DirUp: + if (ir.left() < pos.x()) { + distPri = pos.x()-ir.left(); + distSec = contentsHeight()-ir.top(); + } + else if (ir.left() == pos.x() && ir.top() < pos.y()) { + distPri = 0; + distSec = pos.y()-ir.top(); + } + else { + itemOK = false; + } + break; + + case DirRight: + if (ir.top() > pos.y()) { + distPri = ir.top()-pos.y(); + distSec = ir.left(); + } + else if (ir.top() == pos.y() && ir.left() > pos.x()) { + distPri = 0; + distSec = ir.left()-pos.x(); + } + else { + itemOK = false; + } + break; + + case DirLeft: + if (ir.top() < pos.y()) { + distPri = pos.y()-ir.top(); + distSec = contentsWidth()-ir.left(); + } + else if (ir.top() == pos.y() && ir.left() < pos.x()) { + distPri = 0; + distSec = pos.x()-ir.left(); + } + else { + itemOK = false; + } + break; + + default: + itemOK = false; + break; + } + } + + if (itemOK) { + if (!closestItem || + ((distPri < itemDistancePri) || + (distPri == itemDistancePri && distSec < itemDistanceSec))) { + closestItem = item; + itemDistancePri = distPri; + itemDistanceSec = distSec; + } + } + } + } + } + } + return closestItem; } /*! diff --git a/src/iconview/qiconview.h b/src/iconview/qiconview.h index 48736d6..e87622a 100644 --- a/src/iconview/qiconview.h +++ b/src/iconview/qiconview.h @@ -491,12 +491,7 @@ private: DirLeft, DirRight }; - QIconViewItem* findItem( Direction dir, - const QPoint &relativeTo, - const QRect &searchRect ) const; - bool neighbourItem( Direction dir, - const QPoint &relativeTo, - const QIconViewItem *item ) const; + QIconViewItem* findItem(Direction dir, const QIconViewItem *fromItem) const; QBitmap mask( QPixmap *pix ) const; QIconViewPrivate *d; -- cgit v0.9.0.2-52-g1de3
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