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tdepim/kaddressbook/views/cardview.cpp

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/*
This file is part of KAddressBook.
Copyright (c) 2002 Mike Pilone <mpilone@slac.com>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
As a special exception, permission is given to link this program
with any edition of Qt, and distribute the resulting executable,
without including the source code for Qt in the source distribution.
*/
#include <limits.h>
#include <tqcursor.h>
#include <tqdatetime.h>
#include <tqlabel.h>
#include <tqpainter.h>
#include <tqstyle.h>
#include <tqtimer.h>
#include <tqtooltip.h>
#include <kdebug.h>
#include <kglobalsettings.h>
#include "cardview.h"
#define MIN_ITEM_WIDTH 80
class CardViewTip : public QLabel
{
public:
CardViewTip( TQWidget *parent = 0, const char *name = 0 )
: TQLabel( parent, name )
{
setPalette( TQToolTip::palette() );
setFrameStyle( Panel | Plain );
setMidLineWidth( 0 );
setIndent( 1 );
}
~CardViewTip() {};
protected:
void leaveEvent( TQEvent* )
{
hide();
}
};
//
// Warning: make sure you use findRef() instead of find() to find an
// item! Only the pointer value is unique in the list.
//
class CardViewItemList : public TQPtrList<CardViewItem>
{
protected:
virtual int compareItems( TQPtrCollection::Item item1,
TQPtrCollection::Item item2 )
{
CardViewItem *cItem1 = (CardViewItem*)item1;
CardViewItem *cItem2 = (CardViewItem*)item2;
if ( cItem1 == cItem2 )
return 0;
if ( (cItem1 == 0) || (cItem2 == 0) )
return cItem1 ? -1 : 1;
if ( cItem1->caption() < cItem2->caption() )
return -1;
else if ( cItem1->caption() > cItem2->caption() )
return 1;
return 0;
}
};
class CardViewSeparator
{
friend class CardView;
public:
CardViewSeparator( CardView *view )
: mView( view )
{
mRect = TQRect( 0, 0, view->separatorWidth(), 0 );
}
~CardViewSeparator() {}
void paintSeparator( TQPainter *p, TQColorGroup &cg )
{
p->fillRect( 0, 0, mRect.width(), mRect.height(),
cg.brush(TQColorGroup::Button) );
}
void tqrepaintSeparator()
{
mView->tqrepaintContents( mRect );
}
private:
CardView *mView;
TQRect mRect;
};
class CardViewPrivate
{
public:
CardViewPrivate()
: mSelectionMode( CardView::Multi ),
mDrawCardBorder( true ),
mDrawFieldLabels( true ),
mDrawSeparators( true),
mSepWidth( 2 ),
mShowEmptyFields( false ),
mLayoutDirty( true ),
mLastClickOnItem( false ),
mItemMargin( 0 ),
mItemSpacing( 10 ),
mItemWidth( 200 ),
mMaxFieldLines( INT_MAX ),
mCurrentItem( 0L ),
mLastClickPos( TQPoint(0, 0) ),
mRubberBandAnchor( 0 ),
mCompText( TQString::null )
{};
CardViewItemList mItemList;
TQPtrList<CardViewSeparator> mSeparatorList;
TQFontMetrics *mFm;
TQFontMetrics *mBFm;
TQFont mHeaderFont;
CardView::SelectionMode mSelectionMode;
bool mDrawCardBorder;
bool mDrawFieldLabels;
bool mDrawSeparators;
int mSepWidth;
bool mShowEmptyFields;
bool mLayoutDirty;
bool mLastClickOnItem;
uint mItemMargin; // internal margin in items
uint mItemSpacing; // spacing between items, column seperators and border
int mItemWidth; // width of all items
uint mMaxFieldLines; // Max lines to dispaly pr field
CardViewItem *mCurrentItem;
TQPoint mLastClickPos;
TQTimer *mTimer; // times out if mouse rests for more than 500 msecs
CardViewTip *mTip; // passed to the item under a resting cursor to display full text
bool mOnSeparator; // set/reset on mouse movement
// for resizing by dragging the separators
int mResizeAnchor; // uint, ulong? the mouse down separator left
int mRubberBandAnchor; // for erasing rubber bands
// data used for resizing.
// as they are beeded by each mouse move while resizing, we store them here,
// saving 8 calculations in each mouse move.
int mColspace; // amount of space between items pr column
uint mFirst; // the first col to anchor at for painting rubber bands
int mFirstX; // X position of first in pixel
int mPressed; // the colummn that was pressed on at resizing start
int mSpan; // pressed - first
// key completion
TQString mCompText; // current completion string
TQDateTime mCompUpdated; // ...was updated at this time
};
class CardViewItemPrivate
{
public:
CardViewItemPrivate() {}
TQString mCaption;
TQPtrList< CardViewItem::Field > mFieldList;
bool mSelected;
int x; // horizontal position, set by the view
int y; // vertical position, set by the view
int maxLabelWidth; // the width of the widest label, according to the view font.
int hcache; // height cache
};
CardViewItem::CardViewItem( CardView *parent, const TQString &caption )
: d( new CardViewItemPrivate() ), mView( parent )
{
d->mCaption = caption;
initialize();
}
CardViewItem::~CardViewItem()
{
// Remove ourself from the view
if ( mView != 0 )
mView->takeItem( this );
delete d;
d = 0;
}
void CardViewItem::initialize()
{
d->mSelected = false;
d->mFieldList.setAutoDelete( true );
d->maxLabelWidth = 0;
d->hcache = 0;
// Add ourself to the view
if ( mView != 0 )
mView->insertItem( this );
}
void CardViewItem::paintCard( TQPainter *p, TQColorGroup &cg )
{
if ( !mView )
return;
TQPen pen;
TQBrush brush;
TQFontMetrics fm = *(mView->d->mFm);
TQFontMetrics bFm = *(mView->d->mBFm);
bool drawLabels = mView->d->mDrawFieldLabels;
bool drawBorder = mView->d->mDrawCardBorder;
int mg = mView->itemMargin();
int w = mView->itemWidth() - ( mg * 2 );
int h = height() - ( mg * 2 );
const int colonWidth( fm.width( ":" ) );
int labelXPos = 2 + mg;
int labelWidth = QMIN( w / 2 - 4 - mg, d->maxLabelWidth + colonWidth + 4 );
int valueXPos = labelWidth + 4 + mg;
int valueWidth = w - labelWidth - 4 - mg;
p->setFont( mView->font() );
labelWidth -= colonWidth; // extra space for the colon
if ( !drawLabels ) {
valueXPos = labelXPos;
valueWidth = w - 4;
}
// Draw a simple box
if ( isSelected() )
pen = TQPen( cg.highlight(), 1 );
else
pen = TQPen( cg.button(), 1 );
p->setPen( pen );
// Draw the border - this is only draw if the user asks for it.
if ( drawBorder )
p->drawRect( mg, mg, w, h );
// set the proper pen color for the caption box
if ( isSelected() )
brush = cg.brush( TQColorGroup::Highlight );
else
brush = cg.brush( TQColorGroup::Button );
p->fillRect( mg, mg, w, 4 + bFm.height(), brush );
// Now paint the caption
p->save();
TQFont bFont = mView->headerFont();
p->setFont( bFont );
if ( isSelected() )
p->setPen( cg.highlightedText() );
else
p->setPen( cg.buttonText() );
p->drawText( 2 + mg, 2 + mg + bFm.ascent(), trimString( d->mCaption, w - 4, bFm ) );
p->restore();
// Go through the fields and draw them
TQPtrListIterator<CardViewItem::Field> iter( d->mFieldList );
TQString label, value;
int yPos = mg + 4 + bFm.height() + fm.height();
p->setPen( cg.text() );
int fh = fm.height();
int cln( 0 );
TQString tmp;
int maxLines = mView->maxFieldLines();
for ( iter.toFirst(); iter.current(); ++iter ) {
value = (*iter)->second;
if ( value.isEmpty() && ! mView->d->mShowEmptyFields )
continue;
if ( drawLabels ) {
label = trimString( (*iter)->first, labelWidth, fm );
p->drawText( labelXPos, yPos, label + ":" );
}
for ( cln = 0; cln <= maxLines; cln++ ) {
tmp = value.section( '\n', cln, cln );
if ( !tmp.isEmpty() )
p->drawText( valueXPos, yPos + cln * fh, trimString( tmp, valueWidth, fm ) );
else
break;
}
if ( cln == 0 )
cln = 1;
yPos += cln * fh + 2;
}
// if we are the current item and the view has focus, draw focus rect
if ( mView->currentItem() == this && mView->hasFocus() ) {
mView->style().drawPrimitive( TQStyle::PE_FocusRect, p,
TQRect( 0, 0, mView->itemWidth(), h + (2 * mg) ), cg,
TQStyle::Style_FocusAtBorder,
TQStyleOption( isSelected() ? cg.highlight() : cg.base() ) );
}
}
const TQString &CardViewItem::caption() const
{
return d->mCaption;
}
int CardViewItem::height( bool allowCache ) const
{
// use cache
if ( allowCache && d->hcache )
return d->hcache;
// Base height:
// 2 for line width
// 2 for top caption pad
// 2 for bottom caption pad
// 2 pad for the end
// + 2 times the advised margin
int baseHeight = 8 + ( 2 * mView->itemMargin() );
// size of font for each field
// 2 pad for each field
bool sef = mView->showEmptyFields();
int fh = mView->d->mFm->height();
int fieldHeight = 0;
int lines;
int maxLines( mView->maxFieldLines() );
TQPtrListIterator<CardViewItem::Field> iter( d->mFieldList );
for ( iter.toFirst(); iter.current(); ++iter ) {
if ( !sef && (*iter)->second.isEmpty() )
continue;
lines = QMIN( (*iter)->second.tqcontains( '\n' ) + 1, maxLines );
fieldHeight += ( lines * fh ) + 2;
}
// height of caption font (bold)
fieldHeight += mView->d->mBFm->height();
d->hcache = baseHeight + fieldHeight;
return d->hcache;
}
bool CardViewItem::isSelected() const
{
return d->mSelected;
}
void CardViewItem::setSelected( bool selected )
{
d->mSelected = selected;
}
void CardViewItem::insertField( const TQString &label, const TQString &value )
{
CardViewItem::Field *f = new CardViewItem::Field( label, value );
d->mFieldList.append( f );
d->hcache = 0;
if ( mView ) {
mView->setLayoutDirty( true );
d->maxLabelWidth = QMAX( mView->d->mFm->width( label ), d->maxLabelWidth );
}
}
void CardViewItem::removeField( const TQString &label )
{
CardViewItem::Field *f;
TQPtrListIterator<CardViewItem::Field> iter( d->mFieldList );
for ( iter.toFirst(); iter.current(); ++iter ) {
f = *iter;
if ( f->first == label )
break;
}
if (*iter)
d->mFieldList.remove( *iter );
d->hcache = 0;
if ( mView )
mView->setLayoutDirty( true );
}
void CardViewItem::clearFields()
{
d->mFieldList.clear();
d->hcache = 0;
if ( mView )
mView->setLayoutDirty( true );
}
TQString CardViewItem::trimString( const TQString &text, int width,
TQFontMetrics &fm ) const
{
if ( fm.width( text ) <= width )
return text;
TQString dots = "...";
int dotWidth = fm.width( dots );
TQString trimmed;
int charNum = 0;
while ( fm.width( trimmed ) + dotWidth < width ) {
trimmed += text[ charNum ];
charNum++;
}
// Now trim the last char, since it put the width over the top
trimmed = trimmed.left( trimmed.length() - 1 );
trimmed += dots;
return trimmed;
}
CardViewItem *CardViewItem::nextItem() const
{
CardViewItem *item = 0;
if ( mView )
item = mView->itemAfter( this );
return item;
}
void CardViewItem::tqrepaintCard()
{
if ( mView )
mView->tqrepaintItem( this );
}
void CardViewItem::setCaption( const TQString &caption )
{
d->mCaption = caption;
tqrepaintCard();
}
TQString CardViewItem::fieldValue( const TQString &label ) const
{
TQPtrListIterator<CardViewItem::Field> iter( d->mFieldList );
for ( iter.toFirst(); iter.current(); ++iter )
if ( (*iter)->first == label )
return (*iter)->second;
return TQString();
}
void CardViewItem::showFullString( const TQPoint &itempos, CardViewTip *tip )
{
bool trimmed( false );
TQString s;
int mrg = mView->itemMargin();
int y = mView->d->mBFm->height() + 6 + mrg;
int w = mView->itemWidth() - (2 * mrg);
int lw;
bool drawLabels = mView->drawFieldLabels();
bool isLabel = drawLabels && itempos.x() < w / 2 ? true : false;
if ( itempos.y() < y ) {
if ( itempos.y() < 8 + mrg || itempos.y() > y - 4 )
return;
// this is the caption
s = caption();
trimmed = mView->d->mBFm->width( s ) > w - 4;
y = 2 + mrg;
lw = 0;
isLabel = true;
} else {
// find the field
Field *f = fieldAt( itempos );
if ( !f || ( !mView->showEmptyFields() && f->second.isEmpty() ) )
return;
// y position:
// header font height + 4px hader margin + 2px leading + item margin
// + actual field index * (fontheight + 2px leading)
int maxLines = mView->maxFieldLines();
bool se = mView->showEmptyFields();
int fh = mView->d->mFm->height();
Field *_f;
for ( _f = d->mFieldList.first(); _f != f; _f = d->mFieldList.next() )
if ( se || ! _f->second.isEmpty() )
y += ( QMIN( _f->second.tqcontains( '\n' ) + 1, maxLines ) * fh ) + 2;
if ( isLabel && itempos.y() > y + fh )
return;
s = isLabel ? f->first : f->second;
int colonWidth = mView->d->mFm->width(":");
lw = drawLabels ? QMIN( w / 2 - 4 - mrg, d->maxLabelWidth + colonWidth + 4 ) : 0;
int mw = isLabel ? lw - colonWidth : w - lw - ( mrg * 2 );
if ( isLabel ) {
trimmed = mView->d->mFm->width( s ) > mw - colonWidth;
} else {
TQRect r( mView->d->mFm->boundingRect( 0, 0, INT_MAX, INT_MAX, Qt::AlignTop|Qt::AlignLeft, s ) );
trimmed = r.width() > mw || r.height() / fh > QMIN( s.tqcontains( '\n' ) + 1, maxLines );
}
}
if ( trimmed ) {
tip->setFont( (isLabel && !lw) ? mView->headerFont() : mView->font() );
tip->setText( s );
tip->adjustSize();
// find a proper position
int lx;
lx = isLabel || !drawLabels ? mrg : lw + mrg + 2;
TQPoint pnt( mView->contentsToViewport( TQPoint( d->x, d->y ) ) );
pnt += TQPoint( lx, y );
if ( pnt.x() < 0 )
pnt.setX( 0 );
if ( pnt.x() + tip->width() > mView->visibleWidth() )
pnt.setX( mView->visibleWidth() - tip->width() );
if ( pnt.y() + tip->height() > mView->visibleHeight() )
pnt.setY( QMAX( 0, mView->visibleHeight() - tip->height() ) );
// show
tip->move( pnt );
tip->show();
}
}
CardViewItem::Field *CardViewItem::fieldAt( const TQPoint & itempos ) const
{
int ypos = mView->d->mBFm->height() + 7 + mView->d->mItemMargin;
int iy = itempos.y();
// skip below caption
if ( iy <= ypos )
return 0;
// try find a field
bool showEmpty = mView->showEmptyFields();
int fh = mView->d->mFm->height();
int maxLines = mView->maxFieldLines();
Field *f;
for ( f = d->mFieldList.first(); f; f = d->mFieldList.next() ) {
if ( showEmpty || !f->second.isEmpty() )
ypos += (QMIN( f->second.tqcontains( '\n' )+1, maxLines ) * fh) + 2;
if ( iy <= ypos )
break;
}
return f ? f : 0;
}
CardView::CardView( TQWidget *parent, const char *name )
: TQScrollView( parent, name ),
d( new CardViewPrivate() )
{
d->mItemList.setAutoDelete( true );
d->mSeparatorList.setAutoDelete( true );
TQFont f = font();
d->mFm = new TQFontMetrics( f );
f.setBold( true );
d->mHeaderFont = f;
d->mBFm = new TQFontMetrics( f );
d->mTip = new CardViewTip( viewport() );
d->mTip->hide();
d->mTimer = new TQTimer( this, "mouseTimer" );
viewport()->setMouseTracking( true );
viewport()->setFocusProxy( this );
viewport()->setFocusPolicy( WheelFocus );
viewport()->setBackgroundMode( PaletteBase );
connect( d->mTimer, TQT_SIGNAL( timeout() ), this, TQT_SLOT( tryShowFullText() ) );
setBackgroundMode( PaletteBackground, PaletteBase );
// no reason for a vertical scrollbar
setVScrollBarMode( AlwaysOff );
}
CardView::~CardView()
{
delete d->mFm;
delete d->mBFm;
delete d;
d = 0;
}
void CardView::insertItem( CardViewItem *item )
{
d->mItemList.inSort( item );
setLayoutDirty( true );
}
void CardView::takeItem( CardViewItem *item )
{
if ( d->mCurrentItem == item )
d->mCurrentItem = item->nextItem();
d->mItemList.take( d->mItemList.findRef( item ) );
setLayoutDirty( true );
}
void CardView::clear()
{
d->mItemList.clear();
setLayoutDirty( true );
}
CardViewItem *CardView::currentItem() const
{
if ( !d->mCurrentItem && d->mItemList.count() )
d->mCurrentItem = d->mItemList.first();
return d->mCurrentItem;
}
void CardView::setCurrentItem( CardViewItem *item )
{
if ( !item )
return;
else if ( item->cardView() != this ) {
kdDebug(5720)<<"CardView::setCurrentItem: Item ("<<item<<") not owned! Backing out.."<<endl;
return;
} else if ( item == currentItem() ) {
return;
}
if ( d->mSelectionMode == Single ) {
setSelected( item, true );
} else {
CardViewItem *it = d->mCurrentItem;
d->mCurrentItem = item;
if ( it )
it->tqrepaintCard();
item->tqrepaintCard();
}
if ( ! d->mOnSeparator )
ensureItemVisible( item );
emit currentChanged( item );
}
CardViewItem *CardView::itemAt( const TQPoint &viewPos ) const
{
CardViewItem *item = 0;
TQPtrListIterator<CardViewItem> iter( d->mItemList );
bool found = false;
for ( iter.toFirst(); iter.current() && !found; ++iter ) {
item = *iter;
if ( TQRect( item->d->x, item->d->y, d->mItemWidth, item->height() ).tqcontains( viewPos ) )
found = true;
}
if ( found )
return item;
return 0;
}
TQRect CardView::tqitemRect( const CardViewItem *item ) const
{
return TQRect( item->d->x, item->d->y, d->mItemWidth, item->height() );
}
void CardView::ensureItemVisible( const CardViewItem *item )
{
ensureVisible( item->d->x, item->d->y, d->mItemSpacing, 0 );
ensureVisible( item->d->x + d->mItemWidth, item->d->y, d->mItemSpacing, 0 );
}
void CardView::tqrepaintItem( const CardViewItem *item )
{
tqrepaintContents( TQRect( item->d->x, item->d->y, d->mItemWidth, item->height() ) );
}
void CardView::setSelectionMode( CardView::SelectionMode mode )
{
selectAll( false );
d->mSelectionMode = mode;
}
CardView::SelectionMode CardView::selectionMode() const
{
return d->mSelectionMode;
}
void CardView::selectAll( bool state )
{
TQPtrListIterator<CardViewItem> iter( d->mItemList );
if ( !state ) {
for ( iter.toFirst(); iter.current(); ++iter ) {
if ( (*iter)->isSelected() ) {
(*iter)->setSelected( false );
(*iter)->tqrepaintCard();
}
}
emit selectionChanged( 0 );
} else if ( d->mSelectionMode != CardView::Single ) {
for ( iter.toFirst(); iter.current(); ++iter ) {
(*iter)->setSelected( true );
}
if ( d->mItemList.count() > 0 ) {
// emit, since there must have been at least one selected
emit selectionChanged();
viewport()->update();
}
}
}
void CardView::setSelected( CardViewItem *item, bool selected )
{
if ( (item == 0) || (item->isSelected() == selected) )
return;
if ( selected && d->mCurrentItem != item ) {
CardViewItem *it = d->mCurrentItem;
d->mCurrentItem = item;
if ( it )
it->tqrepaintCard();
}
if ( d->mSelectionMode == CardView::Single ) {
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
if ( selected ) {
item->setSelected( selected );
item->tqrepaintCard();
emit selectionChanged();
emit selectionChanged( item );
} else {
emit selectionChanged();
emit selectionChanged( 0 );
}
} else if ( d->mSelectionMode == CardView::Multi ) {
item->setSelected( selected );
item->tqrepaintCard();
emit selectionChanged();
} else if ( d->mSelectionMode == CardView::Extended ) {
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
item->setSelected( selected );
item->tqrepaintCard();
emit selectionChanged();
}
}
bool CardView::isSelected( CardViewItem *item ) const
{
return (item && item->isSelected());
}
CardViewItem *CardView::selectedItem() const
{
// find the first selected item
TQPtrListIterator<CardViewItem> iter( d->mItemList );
for ( iter.toFirst(); iter.current(); ++iter ) {
if ( (*iter)->isSelected() )
return *iter;
}
return 0;
}
CardViewItem *CardView::firstItem() const
{
return d->mItemList.first();
}
int CardView::childCount() const
{
return d->mItemList.count();
}
CardViewItem *CardView::findItem( const TQString &text, const TQString &label,
Qt::StringComparisonMode compare ) const
{
// If the text is empty, we will return null, since empty text will
// match anything!
if ( text.isEmpty() )
return 0;
TQPtrListIterator<CardViewItem> iter( d->mItemList );
if ( compare & Qt::BeginsWith ) {
TQString value;
for ( iter.toFirst(); iter.current(); ++iter ) {
value = (*iter)->fieldValue( label ).upper();
if ( value.startsWith( text.upper() ) )
return *iter;
}
} else {
kdDebug(5720) << "CardView::findItem: search method not implemented" << endl;
}
return 0;
}
uint CardView::columnWidth() const
{
return d->mDrawSeparators ?
d->mItemWidth + ( 2 * d->mItemSpacing ) + d->mSepWidth :
d->mItemWidth + d->mItemSpacing;
}
void CardView::drawContents( TQPainter *p, int clipx, int clipy,
int clipw, int cliph )
{
TQScrollView::drawContents( p, clipx, clipy, clipw, cliph );
if ( d->mLayoutDirty )
calcLayout();
// allow setting costum colors in the viewport pale
TQColorGroup cg = viewport()->palette().active();
TQRect clipRect( clipx, clipy, clipw, cliph );
TQRect cardRect;
TQRect sepRect;
CardViewItem *item;
CardViewSeparator *sep;
// make sure the viewport is a pure background
viewport()->erase( clipRect );
// Now tell the cards to draw, if they are in the clip region
TQPtrListIterator<CardViewItem> iter( d->mItemList );
for ( iter.toFirst(); iter.current(); ++iter) {
item = *iter;
cardRect.setRect( item->d->x, item->d->y, d->mItemWidth, item->height() );
if ( clipRect.intersects( cardRect ) || clipRect.tqcontains( cardRect ) ) {
// Tell the card to paint
p->save();
p->translate( cardRect.x(), cardRect.y() );
item->paintCard( p, cg );
p->restore();
}
}
// Followed by the separators if they are in the clip region
TQPtrListIterator<CardViewSeparator> sepIter( d->mSeparatorList );
for ( sepIter.toFirst(); sepIter.current(); ++sepIter ) {
sep = *sepIter;
sepRect = sep->mRect;
if ( clipRect.intersects( sepRect ) || clipRect.tqcontains( sepRect ) ) {
p->save();
p->translate( sepRect.x(), sepRect.y() );
sep->paintSeparator( p, cg );
p->restore();
}
}
}
void CardView::resizeEvent( TQResizeEvent *event )
{
TQScrollView::resizeEvent( event );
setLayoutDirty( true );
}
void CardView::calcLayout()
{
// Start in the upper left corner and tqlayout all the
// cars using their height and width
int maxWidth = 0;
int maxHeight = 0;
int xPos = 0;
int yPos = 0;
int cardSpacing = d->mItemSpacing;
// delete the old separators
d->mSeparatorList.clear();
TQPtrListIterator<CardViewItem> iter( d->mItemList );
CardViewItem *item = 0;
CardViewSeparator *sep = 0;
xPos += cardSpacing;
for ( iter.toFirst(); iter.current(); ++iter ) {
item = *iter;
yPos += cardSpacing;
if ( yPos + item->height() + cardSpacing >= height() - horizontalScrollBar()->height() ) {
maxHeight = QMAX( maxHeight, yPos );
// Drawing in this column would be greater than the height
// of the scroll view, so move to next column
yPos = cardSpacing;
xPos += cardSpacing + maxWidth;
if ( d->mDrawSeparators ) {
// Create a separator since the user asked
sep = new CardViewSeparator( this );
sep->mRect.moveTopLeft( TQPoint( xPos, yPos + d->mItemMargin ) );
xPos += d->mSepWidth + cardSpacing;
d->mSeparatorList.append( sep );
}
maxWidth = 0;
}
item->d->x = xPos;
item->d->y = yPos;
yPos += item->height();
maxWidth = QMAX( maxWidth, d->mItemWidth );
}
xPos += maxWidth;
resizeContents( xPos + cardSpacing, maxHeight );
// Update the height of all the separators now that we know the
// max height of a column
TQPtrListIterator<CardViewSeparator> sepIter( d->mSeparatorList );
for ( sepIter.toFirst(); sepIter.current(); ++sepIter )
(*sepIter)->mRect.setHeight( maxHeight - 2 * cardSpacing - 2 * d->mItemMargin );
d->mLayoutDirty = false;
}
CardViewItem *CardView::itemAfter( const CardViewItem *item ) const
{
d->mItemList.findRef( item );
return d->mItemList.next();
}
uint CardView::itemMargin() const
{
return d->mItemMargin;
}
void CardView::setItemMargin( uint margin )
{
if ( margin == d->mItemMargin )
return;
d->mItemMargin = margin;
setLayoutDirty( true );
}
uint CardView::itemSpacing() const
{
return d->mItemSpacing;
}
void CardView::setItemSpacing( uint spacing )
{
if ( spacing == d->mItemSpacing )
return;
d->mItemSpacing = spacing;
setLayoutDirty( true );
}
void CardView::contentsMousePressEvent( TQMouseEvent *e )
{
TQScrollView::contentsMousePressEvent( e );
TQPoint pos = contentsToViewport( e->pos() );
d->mLastClickPos = e->pos();
CardViewItem *item = itemAt( e->pos() );
if ( item == 0 ) {
d->mLastClickOnItem = false;
if ( d->mOnSeparator) {
d->mResizeAnchor = e->x() + contentsX();
d->mColspace = (2 * d->mItemSpacing);
int ccw = d->mItemWidth + d->mColspace + d->mSepWidth;
d->mFirst = (contentsX() + d->mSepWidth) / ccw;
d->mPressed = (d->mResizeAnchor + d->mSepWidth) / ccw;
d->mSpan = d->mPressed - d->mFirst;
d->mFirstX = d->mFirst * ccw;
if ( d->mFirstX )
d->mFirstX -= d->mSepWidth;
} else {
selectAll( false );
}
return;
}
d->mLastClickOnItem = true;
CardViewItem *other = d->mCurrentItem;
setCurrentItem( item );
// Always emit the selection
emit clicked( item );
// The RMB click
if ( e->button() & Qt::RightButton ) {
// clear previous selection
bool blocked = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( blocked );
// select current item
item->setSelected( true );
emit contextMenuRequested( item, mapToGlobal( pos ) );
return;
}
// Check the selection type and update accordingly
if ( d->mSelectionMode == CardView::Single ) {
// make sure it isn't already selected
if ( item->isSelected() )
return;
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
item->setSelected( true );
item->tqrepaintCard();
emit selectionChanged( item );
} else if ( d->mSelectionMode == CardView::Multi ) {
// toggle the selection
item->setSelected( !item->isSelected() );
item->tqrepaintCard();
emit selectionChanged();
} else if ( d->mSelectionMode == CardView::Extended ) {
if ( (e->button() & Qt::LeftButton) && (e->state() & Qt::ShiftButton) ) {
if ( item == other )
return;
bool s = !item->isSelected();
if ( s && !(e->state() & ControlButton) ) {
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
}
int from, to, a, b;
a = d->mItemList.findRef( item );
b = d->mItemList.findRef( other );
from = a < b ? a : b;
to = a > b ? a : b;
CardViewItem *aItem;
for ( ; from <= to; from++ ) {
aItem = d->mItemList.at( from );
aItem->setSelected( s );
tqrepaintItem( aItem );
}
emit selectionChanged();
} else if ( (e->button() & Qt::LeftButton) && (e->state() & Qt::ControlButton) ) {
item->setSelected( !item->isSelected() );
item->tqrepaintCard();
emit selectionChanged();
} else if ( e->button() & Qt::LeftButton ) {
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
item->setSelected( true );
item->tqrepaintCard();
emit selectionChanged();
}
}
}
void CardView::contentsMouseReleaseEvent( TQMouseEvent *e )
{
TQScrollView::contentsMouseReleaseEvent( e );
if ( d->mResizeAnchor && d->mSpan ) {
unsetCursor();
// hide rubber bands
int newiw = d->mItemWidth - ((d->mResizeAnchor - d->mRubberBandAnchor) / d->mSpan);
drawRubberBands( 0 );
// we should move to reflect the new position if we are scrolled.
if ( contentsX() ) {
int newX = QMAX( 0, ( d->mPressed * ( newiw + d->mColspace + d->mSepWidth ) ) - e->x() );
setContentsPos( newX, contentsY() );
}
// set new item width
setItemWidth( newiw );
// reset anchors
d->mResizeAnchor = 0;
d->mRubberBandAnchor = 0;
return;
}
// If there are accel keys, we will not emit signals
if ( (e->state() & Qt::ShiftButton) || (e->state() & Qt::ControlButton) )
return;
// Get the item at this position
CardViewItem *item = itemAt( e->pos() );
if ( item && KGlobalSettings::singleClick() )
emit executed( item );
}
void CardView::contentsMouseDoubleClickEvent( TQMouseEvent *e )
{
TQScrollView::contentsMouseDoubleClickEvent( e );
CardViewItem *item = itemAt( e->pos() );
if ( item )
d->mCurrentItem = item;
if ( item && !KGlobalSettings::singleClick() )
emit executed(item);
emit doubleClicked( item );
}
void CardView::contentsMouseMoveEvent( TQMouseEvent *e )
{
// resizing
if ( d->mResizeAnchor ) {
int x = e->x();
if ( x != d->mRubberBandAnchor )
drawRubberBands( x );
return;
}
if ( d->mLastClickOnItem && (e->state() & Qt::LeftButton) &&
((e->pos() - d->mLastClickPos).manhattanLength() > 4)) {
startDrag();
return;
}
d->mTimer->start( 500 );
// see if we are over a separator
// only if we actually have them painted?
if ( d->mDrawSeparators ) {
int colcontentw = d->mItemWidth + (2 * d->mItemSpacing);
int colw = colcontentw + d->mSepWidth;
int m = e->x() % colw;
if ( m >= colcontentw && m > 0 ) {
setCursor( SplitHCursor );
d->mOnSeparator = true;
} else {
setCursor( ArrowCursor );
d->mOnSeparator = false;
}
}
}
void CardView::enterEvent( TQEvent* )
{
d->mTimer->start( 500 );
}
void CardView::leaveEvent( TQEvent* )
{
d->mTimer->stop();
if ( d->mOnSeparator ) {
d->mOnSeparator = false;
setCursor( ArrowCursor );
}
}
void CardView::focusInEvent( TQFocusEvent* )
{
if ( !d->mCurrentItem && d->mItemList.count() )
setCurrentItem( d->mItemList.first() );
else if ( d->mCurrentItem )
d->mCurrentItem->tqrepaintCard();
}
void CardView::focusOutEvent( TQFocusEvent* )
{
if ( d->mCurrentItem )
d->mCurrentItem->tqrepaintCard();
}
void CardView::keyPressEvent( TQKeyEvent *e )
{
if ( !(childCount() && d->mCurrentItem) ) {
e->ignore();
return;
}
uint pos = d->mItemList.findRef( d->mCurrentItem );
CardViewItem *aItem = 0;
CardViewItem *old = d->mCurrentItem;
switch ( e->key() ) {
case Key_Up:
if ( pos > 0 ) {
aItem = d->mItemList.at( pos - 1 );
setCurrentItem( aItem );
}
break;
case Key_Down:
if ( pos < d->mItemList.count() - 1 ) {
aItem = d->mItemList.at( pos + 1 );
setCurrentItem( aItem );
}
break;
case Key_Left:
{
// look for an item in the previous/next column, starting from
// the vertical middle of the current item.
// FIXME use nice calculatd measures!!!
TQPoint aPoint( d->mCurrentItem->d->x, d->mCurrentItem->d->y );
aPoint -= TQPoint( 30, -(d->mCurrentItem->height() / 2) );
aItem = itemAt( aPoint );
// maybe we hit some space below an item
while ( !aItem && aPoint.y() > 27 ) {
aPoint -= TQPoint( 0, 16 );
aItem = itemAt( aPoint );
}
if ( aItem )
setCurrentItem( aItem );
break;
}
case Key_Right:
{
// FIXME use nice calculated measures!!!
TQPoint aPoint( d->mCurrentItem->d->x + d->mItemWidth, d->mCurrentItem->d->y );
aPoint += TQPoint( 30, (d->mCurrentItem->height() / 2) );
aItem = itemAt( aPoint );
while ( !aItem && aPoint.y() > 27 ) {
aPoint -= TQPoint( 0, 16 );
aItem = itemAt( aPoint );
}
if ( aItem )
setCurrentItem( aItem );
break;
}
case Key_Home:
aItem = d->mItemList.first();
setCurrentItem( aItem );
break;
case Key_End:
aItem = d->mItemList.last();
setCurrentItem( aItem );
break;
case Key_Prior: // PageUp
{
// TQListView: "Make the item above the top visible and current"
// TODO if contentsY(), pick the top item of the leftmost visible column
if ( contentsX() <= 0 )
return;
int cw = columnWidth();
int theCol = ( QMAX( 0, ( contentsX() / cw) * cw ) ) + d->mItemSpacing;
aItem = itemAt( TQPoint( theCol + 1, d->mItemSpacing + 1 ) );
if ( aItem )
setCurrentItem( aItem );
break;
}
case Key_Next: // PageDown
{
// TQListView: "Make the item below the bottom visible and current"
// find the first not fully visible column.
// TODO: consider if a partly visible (or even hidden) item at the
// bottom of the rightmost column exists
int cw = columnWidth();
int theCol = ( (( contentsX() + visibleWidth() ) / cw) * cw ) + d->mItemSpacing + 1;
// if separators are on, we may need to we may be one column further right if only the spacing/sep is hidden
if ( d->mDrawSeparators && cw - (( contentsX() + visibleWidth() ) % cw) <= int( d->mItemSpacing + d->mSepWidth ) )
theCol += cw;
// make sure this is not too far right
while ( theCol > contentsWidth() )
theCol -= columnWidth();
aItem = itemAt( TQPoint( theCol, d->mItemSpacing + 1 ) );
if ( aItem )
setCurrentItem( aItem );
break;
}
case Key_Space:
setSelected( d->mCurrentItem, !d->mCurrentItem->isSelected() );
emit selectionChanged();
break;
case Key_Return:
case Key_Enter:
emit returnPressed( d->mCurrentItem );
emit executed( d->mCurrentItem );
break;
case Key_Menu:
emit contextMenuRequested( d->mCurrentItem, viewport()->mapToGlobal(
tqitemRect(d->mCurrentItem).center() ) );
break;
default:
if ( (e->state() & ControlButton) && e->key() == Key_A ) {
// select all
selectAll( true );
break;
} else if ( !e->text().isEmpty() && e->text()[ 0 ].isPrint() ) {
// if we have a string, do autosearch
}
break;
}
// handle selection
if ( aItem ) {
if ( d->mSelectionMode == CardView::Extended ) {
if ( e->state() & ShiftButton ) {
// shift button: toggle range
// if control button is pressed, leave all items
// and toggle selection current->old current
// otherwise, ??????
bool s = ! aItem->isSelected();
int from, to, a, b;
a = d->mItemList.findRef( aItem );
b = d->mItemList.findRef( old );
from = a < b ? a : b;
to = a > b ? a : b;
if ( to - from > 1 ) {
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
}
CardViewItem *item;
for ( ; from <= to; from++ ) {
item = d->mItemList.at( from );
item->setSelected( s );
tqrepaintItem( item );
}
emit selectionChanged();
} else if ( e->state() & ControlButton ) {
// control button: do nothing
} else {
// no button: move selection to this item
bool b = signalsBlocked();
blockSignals( true );
selectAll( false );
blockSignals( b );
setSelected( aItem, true );
emit selectionChanged();
}
}
}
}
void CardView::contentsWheelEvent( TQWheelEvent *e )
{
scrollBy( 2 * e->delta() / -3, 0 );
}
void CardView::setLayoutDirty( bool dirty )
{
if ( d->mLayoutDirty != dirty ) {
d->mLayoutDirty = dirty;
tqrepaint();
}
}
void CardView::setDrawCardBorder( bool enabled )
{
if ( enabled != d->mDrawCardBorder ) {
d->mDrawCardBorder = enabled;
tqrepaint();
}
}
bool CardView::drawCardBorder() const
{
return d->mDrawCardBorder;
}
void CardView::setDrawColSeparators( bool enabled )
{
if ( enabled != d->mDrawSeparators ) {
d->mDrawSeparators = enabled;
setLayoutDirty( true );
}
}
bool CardView::drawColSeparators() const
{
return d->mDrawSeparators;
}
void CardView::setDrawFieldLabels( bool enabled )
{
if ( enabled != d->mDrawFieldLabels ) {
d->mDrawFieldLabels = enabled;
tqrepaint();
}
}
bool CardView::drawFieldLabels() const
{
return d->mDrawFieldLabels;
}
void CardView::setShowEmptyFields( bool show )
{
if ( show != d->mShowEmptyFields ) {
d->mShowEmptyFields = show;
setLayoutDirty( true );
}
}
bool CardView::showEmptyFields() const
{
return d->mShowEmptyFields;
}
void CardView::startDrag()
{
// The default implementation is a no-op. It must be
// reimplemented in a subclass to be useful
}
void CardView::tryShowFullText()
{
d->mTimer->stop();
// if we have an item
TQPoint cpos = viewportToContents( viewport()->mapFromGlobal( TQCursor::pos() ) );
CardViewItem *item = itemAt( cpos );
if ( item ) {
// query it for a value to display
TQPoint ipos = cpos - tqitemRect( item ).topLeft();
item->showFullString( ipos, d->mTip );
}
}
void CardView::drawRubberBands( int pos )
{
if ( pos && d &&
(!d->mSpan || ((pos - d->mFirstX) / d->mSpan) - d->mColspace - d->mSepWidth < MIN_ITEM_WIDTH) )
return;
int tmpcw = (d->mRubberBandAnchor - d->mFirstX) / d->mSpan;
int x = d->mFirstX + tmpcw - d->mSepWidth - contentsX();
int h = visibleHeight();
TQPainter p( viewport() );
p.setRasterOp( XorROP );
p.setPen( gray );
p.setBrush( gray );
uint n = d->mFirst;
// erase
if ( d->mRubberBandAnchor )
do {
p.drawRect( x, 0, 2, h );
x += tmpcw;
n++;
} while ( x < visibleWidth() && n < d->mSeparatorList.count() );
// paint new
if ( ! pos )
return;
tmpcw = (pos - d->mFirstX) / d->mSpan;
n = d->mFirst;
x = d->mFirstX + tmpcw - d->mSepWidth - contentsX();
do {
p.drawRect( x, 0, 2, h );
x += tmpcw;
n++;
} while ( x < visibleWidth() && n < d->mSeparatorList.count() );
d->mRubberBandAnchor = pos;
}
int CardView::itemWidth() const
{
return d->mItemWidth;
}
void CardView::setItemWidth( int w )
{
if ( w == d->mItemWidth )
return;
if ( w < MIN_ITEM_WIDTH )
w = MIN_ITEM_WIDTH;
d->mItemWidth = w;
setLayoutDirty( true );
updateContents();
}
void CardView::setHeaderFont( const TQFont &fnt )
{
d->mHeaderFont = fnt;
delete d->mBFm;
d->mBFm = new TQFontMetrics( fnt );
}
TQFont CardView::headerFont() const
{
return d->mHeaderFont;
}
void CardView::setFont( const TQFont &fnt )
{
TQScrollView::setFont( fnt );
delete d->mFm;
d->mFm = new TQFontMetrics( fnt );
}
int CardView::separatorWidth() const
{
return d->mSepWidth;
}
void CardView::setSeparatorWidth( int width )
{
d->mSepWidth = width;
setLayoutDirty( true );
}
int CardView::maxFieldLines() const
{
return d->mMaxFieldLines;
}
void CardView::setMaxFieldLines( int howmany )
{
d->mMaxFieldLines = howmany ? howmany : INT_MAX;
// FIXME update, forcing the items to recalc height!!
}
#include "cardview.moc"