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tdelibs/kdeui/kiconview.cpp

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/* This file is part of the KDE libraries
Copyright (C) 1999 Torben Weis <weis@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License version 2 as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <tqtimer.h>
#include <tqpainter.h>
#include <tqpixmapcache.h>
#include <tqcleanuphandler.h>
#include "kiconview.h"
#include "kwordwrap.h"
#include <kconfig.h>
#include <kdebug.h>
#include <kglobal.h>
#include <kglobalsettings.h>
#include <kapplication.h>
#include <kipc.h>
#include <kcursor.h>
#include <kpixmap.h>
#include <kpixmapeffect.h>
class KIconView::KIconViewPrivate
{
public:
KIconViewPrivate() {
mode = KIconView::Execute;
fm = 0L;
doAutoSelect = true;
textHeight = 0;
dragHoldItem = 0L;
}
KIconView::Mode mode;
bool doAutoSelect;
TQFontMetrics *fm;
TQPixmapCache maskCache;
int textHeight;
TQIconViewItem *dragHoldItem;
TQTimer dragHoldTimer;
TQTimer doubleClickIgnoreTimer;
};
KIconView::KIconView( TQWidget *parent, const char *name, WFlags f )
: TQIconView( parent, name, f )
{
d = new KIconViewPrivate;
connect( this, TQT_SIGNAL( onViewport() ),
this, TQT_SLOT( slotOnViewport() ) );
connect( this, TQT_SIGNAL( onItem( TQIconViewItem * ) ),
this, TQT_SLOT( slotOnItem( TQIconViewItem * ) ) );
slotSettingsChanged( KApplication::SETTINGS_MOUSE );
if ( kapp ) { // maybe null when used inside designer
connect( kapp, TQT_SIGNAL( settingsChanged(int) ), TQT_SLOT( slotSettingsChanged(int) ) );
kapp->addKipcEventMask( KIPC::SettingsChanged );
}
m_pCurrentItem = 0L;
m_pAutoSelect = new TQTimer( this );
connect( m_pAutoSelect, TQT_SIGNAL( timeout() ),
this, TQT_SLOT( slotAutoSelect() ) );
connect( &d->dragHoldTimer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotDragHoldTimeout()) );
}
KIconView::~KIconView()
{
delete d->fm;
delete d;
}
void KIconView::setMode( KIconView::Mode mode )
{
d->mode = mode;
}
KIconView::Mode KIconView::mode() const
{
return d->mode;
}
void KIconView::slotOnItem( TQIconViewItem *item )
{
if ( item ) {
if ( m_bUseSingle ) {
if ( m_bChangeCursorOverItem )
viewport()->setCursor( KCursor().handCursor() );
if ( (m_autoSelectDelay > -1) ) {
m_pAutoSelect->start( m_autoSelectDelay, true );
}
}
m_pCurrentItem = item;
}
}
void KIconView::slotOnViewport()
{
if ( m_bUseSingle && m_bChangeCursorOverItem )
viewport()->unsetCursor();
m_pAutoSelect->stop();
m_pCurrentItem = 0L;
}
void KIconView::slotSettingsChanged(int category)
{
if ( category != KApplication::SETTINGS_MOUSE )
return;
m_bUseSingle = KGlobalSettings::singleClick();
//kdDebug() << "KIconView::slotSettingsChanged for mouse, usesingle=" << m_bUseSingle << endl;
disconnect( this, TQT_SIGNAL( mouseButtonClicked( int, TQIconViewItem *,
const TQPoint & ) ),
this, TQT_SLOT( slotMouseButtonClicked( int, TQIconViewItem *,
const TQPoint & ) ) );
// disconnect( this, TQT_SIGNAL( doubleClicked( TQIconViewItem *,
// const TQPoint & ) ),
// this, TQT_SLOT( slotExecute( TQIconViewItem *,
// const TQPoint & ) ) );
if( m_bUseSingle ) {
connect( this, TQT_SIGNAL( mouseButtonClicked( int, TQIconViewItem *,
const TQPoint & ) ),
this, TQT_SLOT( slotMouseButtonClicked( int, TQIconViewItem *,
const TQPoint & ) ) );
}
else {
// connect( this, TQT_SIGNAL( doubleClicked( TQIconViewItem *,
// const TQPoint & ) ),
// this, TQT_SLOT( slotExecute( TQIconViewItem *,
// const TQPoint & ) ) );
}
m_bChangeCursorOverItem = KGlobalSettings::changeCursorOverIcon();
m_autoSelectDelay = m_bUseSingle ? KGlobalSettings::autoSelectDelay() : -1;
if( !m_bUseSingle || !m_bChangeCursorOverItem )
viewport()->unsetCursor();
}
void KIconView::slotAutoSelect()
{
// check that the item still exists
if( index( m_pCurrentItem ) == -1 || !d->doAutoSelect )
return;
//Give this widget the keyboard focus.
if( !hasFocus() )
setFocus();
ButtonState keybstate = KApplication::keyboardMouseState();
TQIconViewItem* previousItem = currentItem();
setCurrentItem( m_pCurrentItem );
if( m_pCurrentItem ) {
//Shift pressed?
if( (keybstate & ShiftButton) ) {
//Temporary implementation of the selection until TQIconView supports it
bool block = signalsBlocked();
blockSignals( true );
//No Ctrl? Then clear before!
if( !(keybstate & ControlButton) )
clearSelection();
bool select = !m_pCurrentItem->isSelected();
bool update = viewport()->isUpdatesEnabled();
viewport()->tqsetUpdatesEnabled( false );
//Calculate the smallest rectangle that contains the current Item
//and the one that got the autoselect event
TQRect r;
TQRect redraw;
if ( previousItem )
r = TQRect( QMIN( previousItem->x(), m_pCurrentItem->x() ),
QMIN( previousItem->y(), m_pCurrentItem->y() ),
0, 0 );
else
r = TQRect( 0, 0, 0, 0 );
if ( previousItem->x() < m_pCurrentItem->x() )
r.setWidth( m_pCurrentItem->x() - previousItem->x() + m_pCurrentItem->width() );
else
r.setWidth( previousItem->x() - m_pCurrentItem->x() + previousItem->width() );
if ( previousItem->y() < m_pCurrentItem->y() )
r.setHeight( m_pCurrentItem->y() - previousItem->y() + m_pCurrentItem->height() );
else
r.setHeight( previousItem->y() - m_pCurrentItem->y() + previousItem->height() );
r = r.normalize();
//Check for each item whether it is within the rectangle.
//If yes, select it
for( TQIconViewItem* i = firstItem(); i; i = i->nextItem() ) {
if( i->intersects( r ) ) {
redraw = redraw.unite( i->rect() );
setSelected( i, select, true );
}
}
blockSignals( block );
viewport()->tqsetUpdatesEnabled( update );
tqrepaintContents( redraw, false );
emit selectionChanged();
if( selectionMode() == TQIconView::Single )
emit selectionChanged( m_pCurrentItem );
//setSelected( m_pCurrentItem, true, (keybstate & ControlButton), (keybstate & ShiftButton) );
}
else if( (keybstate & ControlButton) )
setSelected( m_pCurrentItem, !m_pCurrentItem->isSelected(), true );
else
setSelected( m_pCurrentItem, true );
}
else
kdDebug() << "KIconView: That's not supposed to happen!!!!" << endl;
}
void KIconView::emitExecute( TQIconViewItem *item, const TQPoint &pos )
{
if ( d->mode != Execute )
{
// kdDebug() << "KIconView::emitExecute : not in execute mode !" << endl;
return;
}
ButtonState keybstate = KApplication::keyboardMouseState();
m_pAutoSelect->stop();
//Don<6F>t emit executed if in SC mode and Shift or Ctrl are pressed
if( !( m_bUseSingle && ((keybstate & ShiftButton) || (keybstate & ControlButton)) ) ) {
setSelected( item, false );
viewport()->unsetCursor();
emit executed( item );
emit executed( item, pos );
}
}
void KIconView::updateDragHoldItem( TQDropEvent *e )
{
TQIconViewItem *item = tqfindItem( e->pos() );
if ( d->dragHoldItem != item)
{
d->dragHoldItem = item;
if( item )
{
d->dragHoldTimer.start( 1000, true );
}
else
{
d->dragHoldTimer.stop();
}
}
}
void KIconView::focusOutEvent( TQFocusEvent *fe )
{
m_pAutoSelect->stop();
TQIconView::focusOutEvent( fe );
}
void KIconView::leaveEvent( TQEvent *e )
{
m_pAutoSelect->stop();
TQIconView::leaveEvent( e );
}
void KIconView::contentsMousePressEvent( TQMouseEvent *e )
{
if( (selectionMode() == Extended) && (e->state() & ShiftButton) && !(e->state() & ControlButton) ) {
bool block = signalsBlocked();
blockSignals( true );
clearSelection();
blockSignals( block );
}
TQIconView::contentsMousePressEvent( e );
d->doAutoSelect = false;
}
void KIconView::contentsMouseDoubleClickEvent ( TQMouseEvent * e )
{
TQIconView::contentsMouseDoubleClickEvent( e );
TQIconViewItem* item = tqfindItem( e->pos() );
if( item ) {
if( (e->button() == Qt::LeftButton) && !m_bUseSingle )
emitExecute( item, e->globalPos() );
emit doubleClicked( item, e->globalPos() );
}
d->doubleClickIgnoreTimer.start(0, true);
}
void KIconView::slotMouseButtonClicked( int btn, TQIconViewItem *item, const TQPoint &pos )
{
//kdDebug() << " KIconView::slotMouseButtonClicked() item=" << item << endl;
if( d->doubleClickIgnoreTimer.isActive() )
return; // Ignore double click
if( (btn == Qt::LeftButton) && item )
emitExecute( item, pos );
}
void KIconView::contentsMouseReleaseEvent( TQMouseEvent *e )
{
d->doAutoSelect = true;
TQIconView::contentsMouseReleaseEvent( e );
}
void KIconView::contentsDragEnterEvent( TQDragEnterEvent *e )
{
updateDragHoldItem( e );
TQIconView::contentsDragEnterEvent( e );
}
void KIconView::contentsDragLeaveEvent( TQDragLeaveEvent *e )
{
d->dragHoldTimer.stop();
d->dragHoldItem = 0L;
TQIconView::contentsDragLeaveEvent( e );
}
void KIconView::contentsDragMoveEvent( TQDragMoveEvent *e )
{
updateDragHoldItem( e );
TQIconView::contentsDragMoveEvent( e );
}
void KIconView::contentsDropEvent( TQDropEvent* e )
{
d->dragHoldTimer.stop();
TQIconView::contentsDropEvent( e );
}
void KIconView::slotDragHoldTimeout()
{
TQIconViewItem *tmp = d->dragHoldItem;
d->dragHoldItem = 0L;
emit held( tmp );
}
void KIconView::takeItem( TQIconViewItem * item )
{
if ( item == d->dragHoldItem )
{
d->dragHoldTimer.stop();
d->dragHoldItem = 0L;
}
TQIconView::takeItem( item );
}
void KIconView::cancelPendingHeldSignal()
{
d->dragHoldTimer.stop();
d->dragHoldItem = 0L;
}
void KIconView::wheelEvent( TQWheelEvent *e )
{
if (horizontalScrollBar() && (arrangement() == TQIconView::TopToBottom)) {
TQWheelEvent ce(e->pos(), e->delta(), e->state(), Qt::Horizontal);
TQApplication::sendEvent( horizontalScrollBar(), &ce);
if (ce.isAccepted()) {
e->accept();
return;
}
}
TQIconView::wheelEvent(e);
}
void KIconView::setFont( const TQFont &font )
{
delete d->fm;
d->fm = 0L;
TQIconView::setFont( font );
}
TQFontMetrics *KIconView::itemFontMetrics() const
{
if (!d->fm) {
// TQIconView creates one too, but we can't access it
d->fm = new TQFontMetrics( font() );
}
return d->fm;
}
TQPixmap KIconView::selectedIconPixmap( TQPixmap *pix, const TQColor &col ) const
{
TQPixmap m;
if ( d->maskCache.tqfind( TQString::number( pix->serialNumber() ), m ) )
return m;
m = KPixmapEffect::selectedPixmap( KPixmap(*pix), col );
d->maskCache.insert( TQString::number( pix->serialNumber() ), m );
return m;
}
int KIconView::iconTextHeight() const
{
return d->textHeight > 0 ? d->textHeight : ( wordWrapIconText() ? 99 : 1 );
}
void KIconView::setIconTextHeight( int n )
{
int oldHeight = iconTextHeight();
if ( n > 1 )
d->textHeight = n;
else
d->textHeight = 1;
// so that Qt still shows the tooltip when even a wrapped text is too long
setWordWrapIconText( false );
// update view if needed
if ( iconTextHeight() != oldHeight )
setFont( font() ); // hack to recalc items
}
/////////////
struct KIconViewItem::KIconViewItemPrivate
{
TQSize m_pixmapSize;
};
void KIconViewItem::init()
{
m_wordWrap = 0L;
d = 0L;
calcRect();
}
KIconViewItem::~KIconViewItem()
{
delete m_wordWrap;
delete d;
}
void KIconViewItem::calcRect( const TQString& text_ )
{
bool drawRoundedRect = KGlobalSettings::iconUseRoundedRect();
Q_ASSERT( iconView() );
if ( !iconView() )
return;
delete m_wordWrap;
m_wordWrap = 0L;
#ifndef NDEBUG // be faster for the end-user, such a bug will have been fixed before hand :)
if ( !iconView()->inherits("KIconView") )
{
kdWarning() << "KIconViewItem used in a " << iconView()->className() << " !!" << endl;
return;
}
#endif
//kdDebug() << "KIconViewItem::calcRect - " << text() << endl;
KIconView *view = static_cast<KIconView *>(iconView());
TQRect itemIconRect = pixmapRect();
TQRect itemTextRect = textRect();
TQRect tqitemRect = rect();
int pw = 0;
int ph = 0;
#ifndef QT_NO_PICTURE
if ( picture() ) {
TQRect br = picture()->boundingRect();
pw = br.width() + 2;
ph = br.height() + 2;
} else
#endif
{
// Qt uses unknown_icon if no pixmap. Let's see if we need that - I doubt it
if (!pixmap())
return;
pw = pixmap()->width() + 2;
ph = pixmap()->height() + 2;
}
itemIconRect.setWidth( pw );
#if 1 // FIXME
// There is a bug in Qt which prevents the item from being placed
// properly when the pixmapRect is not at the top of the tqitemRect, so we
// have to increase the height of the pixmapRect and leave it at the top
// of the tqitemRect...
if ( d && !d->m_pixmapSize.isNull() )
itemIconRect.setHeight( d->m_pixmapSize.height() + 2 );
else
#endif
itemIconRect.setHeight( ph );
int tw = 0;
if ( d && !d->m_pixmapSize.isNull() )
tw = view->maxItemWidth() - ( view->itemTextPos() == TQIconView::Bottom ? 0 :
d->m_pixmapSize.width() + 2 );
else
tw = view->maxItemWidth() - ( view->itemTextPos() == TQIconView::Bottom ? 0 :
itemIconRect.width() );
TQFontMetrics *fm = view->itemFontMetrics();
TQString t;
TQRect r;
// When is text_ set ? Doesn't look like it's ever set.
t = text_.isEmpty() ? text() : text_;
// Max text height
int nbLines = static_cast<KIconView*>( iconView() )->iconTextHeight();
int height = nbLines > 0 ? fm->height() * nbLines : 0xFFFFFFFF;
// Should not be higher than pixmap if text is alongside icons
if ( view->itemTextPos() != TQIconView::Bottom ) {
if ( d && !d->m_pixmapSize.isNull() )
height = QMIN( d->m_pixmapSize.height() + 2, height );
else
height = QMIN( itemIconRect.height(), height );
height = QMAX( height, fm->height() );
}
// Calculate the word-wrap
TQRect outerRect( 0, 0, tw - 6, height );
m_wordWrap = KWordWrap::formatText( *fm, outerRect, 0, t );
r = m_wordWrap->boundingRect();
int realWidth = QMAX( QMIN( r.width() + 4, tw ), fm->width( "X" ) );
if (drawRoundedRect == true)
itemTextRect.setWidth( realWidth + 2);
else
itemTextRect.setWidth( realWidth );
itemTextRect.setHeight( r.height() );
int w = 0; int h = 0; int y = 0;
if ( view->itemTextPos() == TQIconView::Bottom ) {
// If the pixmap size has been specified, use it
if ( d && !d->m_pixmapSize.isNull() )
{
w = QMAX( itemTextRect.width(), d->m_pixmapSize.width() + 2 );
h = itemTextRect.height() + d->m_pixmapSize.height() + 2 + 1;
#if 0 // FIXME
// Waiting for the qt bug to be solved, the pixmapRect must
// stay on the top...
y = d->m_pixmapSize.height() + 2 - itemIconRect.height();
#endif
}
else {
w = QMAX( itemTextRect.width(), itemIconRect.width() );
h = itemTextRect.height() + itemIconRect.height() + 1;
}
tqitemRect.setWidth( w );
tqitemRect.setHeight( h );
int width = QMAX( w, TQApplication::globalStrut().width() ); // see TQIconViewItem::width()
int height = QMAX( h, TQApplication::globalStrut().height() ); // see TQIconViewItem::height()
itemTextRect = TQRect( ( width - itemTextRect.width() ) / 2, height - itemTextRect.height(),
itemTextRect.width(), itemTextRect.height() );
itemIconRect = TQRect( ( width - itemIconRect.width() ) / 2, y,
itemIconRect.width(), itemIconRect.height() );
} else {
// If the pixmap size has been specified, use it
if ( d && !d->m_pixmapSize.isNull() )
{
h = QMAX( itemTextRect.height(), d->m_pixmapSize.height() + 2 );
#if 0 // FIXME
// Waiting for the qt bug to be solved, the pixmapRect must
// stay on the top...
y = ( d->m_pixmapSize.height() + 2 - itemIconRect.height() ) / 2;
#endif
}
else
h = QMAX( itemTextRect.height(), itemIconRect.height() );
w = itemTextRect.width() + itemIconRect.width() + 1;
tqitemRect.setWidth( w );
tqitemRect.setHeight( h );
int width = QMAX( w, TQApplication::globalStrut().width() ); // see TQIconViewItem::width()
int height = QMAX( h, TQApplication::globalStrut().height() ); // see TQIconViewItem::height()
itemTextRect = TQRect( width - itemTextRect.width(), ( height - itemTextRect.height() ) / 2,
itemTextRect.width(), itemTextRect.height() );
if ( itemIconRect.height() > itemTextRect.height() ) // icon bigger than text -> center vertically
itemIconRect = TQRect( 0, ( height - itemIconRect.height() ) / 2,
itemIconRect.width(), itemIconRect.height() );
else // icon smaller than text -> place in top or center with first line
itemIconRect = TQRect( 0, QMAX(( fm->height() - itemIconRect.height() ) / 2 + y, 0),
itemIconRect.width(), itemIconRect.height() );
if ( ( itemIconRect.height() <= 20 ) && ( itemTextRect.height() < itemIconRect.height() ) )
{
itemTextRect.setHeight( itemIconRect.height() - 2 );
itemTextRect.setY( itemIconRect.y() );
}
}
if ( itemIconRect != pixmapRect() )
setPixmapRect( itemIconRect );
if ( itemTextRect != textRect() )
setTextRect( itemTextRect );
if ( tqitemRect != rect() )
setItemRect( tqitemRect );
// Done by setPixmapRect, setTextRect and setItemRect ! [and useless if no rect changed]
//view->updateItemContainer( this );
}
void KIconViewItem::paintItem( TQPainter *p, const TQColorGroup &cg )
{
TQIconView* view = iconView();
Q_ASSERT( view );
if ( !view )
return;
#ifndef NDEBUG // be faster for the end-user, such a bug will have been fixed before hand :)
if ( !view->inherits("KIconView") )
{
kdWarning() << "KIconViewItem used in a " << view->className() << " !!" << endl;
return;
}
#endif
p->save();
paintPixmap(p, cg);
paintText(p, cg);
p->restore();
}
KWordWrap * KIconViewItem::wordWrap()
{
return m_wordWrap;
}
void KIconViewItem::paintPixmap( TQPainter *p, const TQColorGroup &cg )
{
KIconView *kview = static_cast<KIconView *>(iconView());
#ifndef QT_NO_PICTURE
if ( picture() ) {
TQPicture *pic = picture();
if ( isSelected() ) {
// TODO something as nice as selectedIconPixmap if possible ;)
p->fillRect( pixmapRect( false ), TQBrush( cg.highlight(), TQBrush::Dense4Pattern) );
}
p->drawPicture( x()-pic->boundingRect().x(), y()-pic->boundingRect().y(), *pic );
} else
#endif
{
int iconX = pixmapRect( false ).x();
int iconY = pixmapRect( false ).y();
TQPixmap *pix = pixmap();
if ( !pix || pix->isNull() )
return;
#if 1 // FIXME
// Move the pixmap manually because the pixmapRect is at the
// top of the tqitemRect
// (won't be needed anymore in future versions of qt)
if ( d && !d->m_pixmapSize.isNull() )
{
int offset = 0;
if ( kview->itemTextPos() == TQIconView::Bottom )
offset = d->m_pixmapSize.height() - pix->height();
else
offset = ( d->m_pixmapSize.height() - pix->height() ) / 2;
if ( offset > 0 )
iconY += offset;
}
#endif
if ( isSelected() ) {
TQPixmap selectedPix = kview->selectedIconPixmap( pix, cg.highlight() );
p->drawPixmap( iconX, iconY, selectedPix );
} else {
p->drawPixmap( iconX, iconY, *pix );
}
}
}
void KIconViewItem::paintText( TQPainter *p, const TQColorGroup &cg )
{
bool drawRoundedRect = KGlobalSettings::iconUseRoundedRect();
int textX;
if (drawRoundedRect == true)
textX = textRect( false ).x() + 4;
else
textX = textRect( false ).x() + 2;
int textY = textRect( false ).y();
if ( isSelected() ) {
if (drawRoundedRect == true) {
p->setBrush(TQBrush(cg.highlight()));
p->setPen(TQPen(cg.highlight()));
p->drawRoundRect( textRect( false ) ,1000/textRect(false).width(),1000/textRect(false).height() );
}
else {
p->fillRect( textRect( false ), cg.highlight() );
}
p->setPen( TQPen( cg.highlightedText() ) );
} else {
if ( iconView()->itemTextBackground() != Qt::NoBrush )
p->fillRect( textRect( false ), iconView()->itemTextBackground() );
p->setPen( cg.text() );
}
int align = iconView()->itemTextPos() == TQIconView::Bottom ? AlignHCenter : AlignAuto;
m_wordWrap->drawText( p, textX, textY, align | KWordWrap::Truncate );
}
TQSize KIconViewItem::pixmapSize() const
{
return d ? d->m_pixmapSize : TQSize( 0, 0 );
}
void KIconViewItem::setPixmapSize( const TQSize& size )
{
if ( !d )
d = new KIconViewItemPrivate;
d->m_pixmapSize = size;
}
void KIconView::virtual_hook( int, void* )
{ /*BASE::virtual_hook( id, data );*/ }
#include "kiconview.moc"