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tdepim/knode/headerview.cpp

618 lines
16 KiB

/*
KNode, the KDE newsreader
Copyright (c) 1999-2005 the KNode authors.
See file AUTHORS for details
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.
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, US
*/
#include <tqcursor.h>
#include <tqheader.h>
#include <tqstylesheet.h>
#include <tqtimer.h>
#include <klocale.h>
#include <kdebug.h>
#include <kdeversion.h>
#include <kpopupmenu.h>
#include "knglobals.h"
#include "knconfigmanager.h"
#include "headerview.h"
#include "knhdrviewitem.h"
#include "kngroupmanager.h"
#include "knarticle.h"
#include "knarticlemanager.h"
#include "knmainwidget.h"
KNHeaderView::KNHeaderView(TQWidget *parent, const char *name) :
KListView(parent,name),
mSortCol( -1 ),
mSortAsc( true ),
mSortByThreadChangeDate( false ),
mDelayedCenter( -1 ),
mActiveItem( 0 ),
mShowingFolder( false ),
mInitDone( false )
{
mPaintInfo.subCol = addColumn( i18n("Subject"), 310 );
mPaintInfo.senderCol = addColumn( i18n("From"), 115 );
mPaintInfo.scoreCol = addColumn( i18n("Score"), 42 );
mPaintInfo.sizeCol = addColumn( i18n("Lines"), 42 );
mPaintInfo.dateCol = addColumn( i18n("Date"), 102 );
setDropVisualizer( false );
setDropHighlighter( false );
setItemsRenameable( false );
setItemsMovable( false );
setAcceptDrops( false );
setDragEnabled( true );
setAllColumnsShowFocus( true );
setSelectionMode( TQListView::Extended );
setShowSortIndicator( true );
setShadeSortColumn ( true );
setRootIsDecorated( true );
setSorting( mPaintInfo.dateCol );
header()->setMovingEnabled( true );
setColumnAlignment( mPaintInfo.sizeCol, Qt::AlignRight );
setColumnAlignment( mPaintInfo.scoreCol, Qt::AlignRight );
// due to our own column text squeezing we need to tqrepaint on column resizing
disconnect( header(), TQT_SIGNAL(sizeChange(int, int, int)) );
connect( header(), TQT_SIGNAL(sizeChange(int, int, int)),
TQT_SLOT(slotSizeChanged(int, int, int)) );
// column selection RMB menu
mPopup = new KPopupMenu( this );
mPopup->insertTitle( i18n("View Columns") );
mPopup->setCheckable( true );
mPopup->insertItem( i18n("Line Count"), KPaintInfo::COL_SIZE );
mPopup->insertItem( i18n("Score"), KPaintInfo::COL_SCORE );
connect( mPopup, TQT_SIGNAL(activated(int)), this, TQT_SLOT(toggleColumn(int)) );
// connect to the article manager
connect( knGlobals.articleManager(), TQT_SIGNAL(aboutToShowGroup()), TQT_SLOT(prepareForGroup()) );
connect( knGlobals.articleManager(), TQT_SIGNAL(aboutToShowFolder()), TQT_SLOT(prepareForFolder()) );
new KNHeaderViewToolTip( this );
installEventFilter( this );
}
KNHeaderView::~KNHeaderView()
{
// ### crash because KNConfigManager is already deleted here
// writeConfig();
}
void KNHeaderView::readConfig()
{
if ( !mInitDone ) {
KConfig *conf = knGlobals.config();
conf->setGroup( "HeaderView" );
mSortByThreadChangeDate = conf->readBoolEntry( "sortByThreadChangeDate", false );
restoreLayout( conf, "HeaderView" );
mInitDone = true;
}
KNConfig::ReadNewsGeneral *rngConf = knGlobals.configManager()->readNewsGeneral();
toggleColumn( KPaintInfo::COL_SIZE, rngConf->showLines() );
if ( !mShowingFolder ) // score column is always hidden when showing a folder
toggleColumn( KPaintInfo::COL_SCORE, rngConf->showScore() );
mDateFormatter.setCustomFormat( rngConf->dateCustomFormat() );
mDateFormatter.setFormat( rngConf->dateFormat() );
KNConfig::Appearance *app = knGlobals.configManager()->appearance();
TQPalette p = palette();
p.setColor( TQColorGroup::Base, app->backgroundColor() );
p.setColor( TQColorGroup::Text, app->textColor() );
setPalette( p );
setAlternateBackground( app->alternateBackgroundColor() );
setFont( app->articleListFont() );
}
void KNHeaderView::writeConfig()
{
KConfig *conf = knGlobals.config();
conf->setGroup( "HeaderView" );
conf->writeEntry( "sortByThreadChangeDate", mSortByThreadChangeDate );
saveLayout( conf, "HeaderView" );
KNConfig::ReadNewsGeneral *rngConf = knGlobals.configManager()->readNewsGeneral();
rngConf->setShowLines( mPaintInfo.showSize );
if ( !mShowingFolder ) // score column is always hidden when showing a folder
rngConf->setShowScore( mPaintInfo.showScore );
}
void KNHeaderView::setActive( TQListViewItem *i )
{
KNHdrViewItem *item = static_cast<KNHdrViewItem*>( i );
if ( !item || item->isActive() )
return;
if ( mActiveItem ) {
mActiveItem->setActive( false );
tqrepaintItem( mActiveItem );
mActiveItem = 0;
}
item->setActive( true );
setSelected( item, true );
setCurrentItem( i );
ensureItemVisibleWithMargin( i );
mActiveItem = item;
emit( itemSelected(item) );
}
void KNHeaderView::clear()
{
mActiveItem = 0;
TQListView::clear();
}
void KNHeaderView::ensureItemVisibleWithMargin( const TQListViewItem *i )
{
if ( !i )
return;
TQListViewItem *parent = i->parent();
while ( parent ) {
if ( !parent->isOpen() )
parent->setOpen( true );
parent = parent->parent();
}
mDelayedCenter = -1;
int y = itemPos( i );
int h = i->height();
if ( knGlobals.configManager()->readNewsGeneral()->smartScrolling() &&
((y + h + 5) >= (contentsY() + visibleHeight()) ||
(y - 5 < contentsY())) )
{
ensureVisible( contentsX(), y + h/2, 0, h/2 );
mDelayedCenter = y + h/2;
TQTimer::singleShot( 300, this, TQT_SLOT(slotCenterDelayed()) );
} else {
ensureVisible( contentsX(), y + h/2, 0, h/2 );
}
}
void KNHeaderView::slotCenterDelayed()
{
if ( mDelayedCenter != -1 )
ensureVisible( contentsX(), mDelayedCenter, 0, visibleHeight() / 2 );
}
void KNHeaderView::setSorting( int column, bool ascending )
{
if ( column == mSortCol ) {
mSortAsc = ascending;
if ( mInitDone && column == mPaintInfo.dateCol && ascending )
mSortByThreadChangeDate = !mSortByThreadChangeDate;
} else {
mSortCol = column;
emit sortingChanged( column );
}
KListView::setSorting( column, ascending );
if ( currentItem() )
ensureItemVisible( currentItem() );
if ( mSortByThreadChangeDate )
setColumnText( mPaintInfo.dateCol , i18n("Date (thread changed)") );
else
setColumnText( mPaintInfo.dateCol, i18n("Date") );
}
void KNHeaderView::nextArticle()
{
KNHdrViewItem *it = static_cast<KNHdrViewItem*>( currentItem() );
if (it) {
if (it->isActive()) { // take current article, if not selected
if (it->isExpandable())
it->setOpen(true);
it = static_cast<KNHdrViewItem*>(it->itemBelow());
}
} else
it = static_cast<KNHdrViewItem*>( firstChild() );
if(it) {
clearSelection();
setActive( it );
setSelectionAnchor( currentItem() );
}
}
void KNHeaderView::prevArticle()
{
KNHdrViewItem *it = static_cast<KNHdrViewItem*>( currentItem() );
if (it && it->isActive()) { // take current article, if not selected
if (it)
it = static_cast<KNHdrViewItem*>(it->itemAbove());
else
it = static_cast<KNHdrViewItem*>( firstChild() );
}
if (it) {
clearSelection();
setActive( it );
setSelectionAnchor( currentItem() );
}
}
void KNHeaderView::incCurrentArticle()
{
TQListViewItem *lvi = currentItem();
if ( lvi && lvi->isExpandable() )
lvi->setOpen( true );
if ( lvi && lvi->itemBelow() ) {
setCurrentItem( lvi->itemBelow() );
ensureItemVisible( currentItem() );
setFocus();
}
}
void KNHeaderView::decCurrentArticle()
{
TQListViewItem *lvi = currentItem();
if ( lvi && lvi->itemAbove() ) {
if ( lvi->itemAbove()->isExpandable() )
lvi->itemAbove()->setOpen( true );
setCurrentItem( lvi->itemAbove() );
ensureItemVisible( currentItem() );
setFocus();
}
}
void KNHeaderView::selectCurrentArticle()
{
clearSelection();
setActive( currentItem() );
}
bool KNHeaderView::nextUnreadArticle()
{
if ( !knGlobals.groupManager()->currentGroup() )
return false;
KNHdrViewItem *next, *current;
KNRemoteArticle *art;
current = static_cast<KNHdrViewItem*>( currentItem() );
if ( !current )
current = static_cast<KNHdrViewItem*>( firstChild() );
if(!current)
return false;
art = static_cast<KNRemoteArticle*>( current->art );
if ( !current->isActive() && !art->isRead() ) // take current article, if unread & not selected
next = current;
else {
if ( current->isExpandable() && art->hasUnreadFollowUps() && !current->isOpen() )
setOpen( current, true );
next = static_cast<KNHdrViewItem*>( current->itemBelow() );
}
while ( next ) {
art = static_cast<KNRemoteArticle*>( next->art );
if ( !art->isRead() )
break;
else {
if ( next->isExpandable() && art->hasUnreadFollowUps() && !next->isOpen() )
setOpen( next, true );
next = static_cast<KNHdrViewItem*>( next->itemBelow() );
}
}
if ( next ) {
clearSelection();
setActive( next );
setSelectionAnchor( currentItem() );
return true;
}
return false;
}
bool KNHeaderView::nextUnreadThread()
{
KNHdrViewItem *next, *current;
KNRemoteArticle *art;
if ( !knGlobals.groupManager()->currentGroup() )
return false;
current = static_cast<KNHdrViewItem*>( currentItem() );
if ( !current )
current = static_cast<KNHdrViewItem*>( firstChild() );
if ( !current )
return false;
art = static_cast<KNRemoteArticle*>( current->art );
if ( current->depth() == 0 && !current->isActive() && (!art->isRead() || art->hasUnreadFollowUps()) )
next = current; // take current article, if unread & not selected
else
next = static_cast<KNHdrViewItem*>( current->itemBelow() );
while ( next ) {
art = static_cast<KNRemoteArticle*>( next->art );
if ( next->depth() == 0 ) {
if ( !art->isRead() || art->hasUnreadFollowUps() )
break;
}
next = static_cast<KNHdrViewItem*>( next->itemBelow() );
}
if ( next ) {
setCurrentItem( next );
if ( art->isRead() )
nextUnreadArticle();
else {
clearSelection();
setActive( next );
setSelectionAnchor( currentItem() );
}
return true;
}
return false;
}
void KNHeaderView::toggleColumn( int column, int mode )
{
bool *show = 0;
int *col = 0;
int width = 0;
switch ( static_cast<KPaintInfo::ColumnIds>( column ) )
{
case KPaintInfo::COL_SIZE:
show = &mPaintInfo.showSize;
col = &mPaintInfo.sizeCol;
width = 42;
break;
case KPaintInfo::COL_SCORE:
show = &mPaintInfo.showScore;
col = &mPaintInfo.scoreCol;
width = 42;
break;
default:
return;
}
if ( mode == -1 )
*show = !*show;
else
*show = mode;
mPopup->setItemChecked( column, *show );
if (*show) {
header()->setResizeEnabled( true, *col );
setColumnWidth( *col, width );
}
else {
header()->setResizeEnabled( false, *col );
header()->setStretchEnabled( false, *col );
hideColumn( *col );
}
if ( mode == -1 ) // save config when toggled
writeConfig();
}
void KNHeaderView::prepareForGroup()
{
mShowingFolder = false;
header()->setLabel( mPaintInfo.senderCol, i18n("From") );
KNConfig::ReadNewsGeneral *rngConf = knGlobals.configManager()->readNewsGeneral();
toggleColumn( KPaintInfo::COL_SCORE, rngConf->showScore() );
}
void KNHeaderView::prepareForFolder()
{
mShowingFolder = true;
header()->setLabel( mPaintInfo.senderCol, i18n("Newsgroups / To") );
toggleColumn( KPaintInfo::COL_SCORE, false ); // local folders have no score
}
bool KNHeaderView::event( TQEvent *e )
{
// we don't want to have the alternate list background restored
// to the system defaults!
if (e->type() == TQEvent::ApplicationPaletteChange)
return TQListView::event(e);
else
return KListView::event(e);
}
void KNHeaderView::contentsMousePressEvent( TQMouseEvent *e )
{
if (!e) return;
bool selectMode=(( e->state() & ShiftButton ) || ( e->state() & ControlButton ));
TQPoint vp = contentsToViewport(e->pos());
TQListViewItem *i = itemAt(vp);
KListView::contentsMousePressEvent( e );
if ( i ) {
int decoLeft = header()->sectionPos( 0 ) +
treeStepSize() * ( (i->depth() - 1) + ( rootIsDecorated() ? 1 : 0) );
int decoRight = kMin( decoLeft + treeStepSize() + itemMargin(),
header()->sectionPos( 0 ) + header()->sectionSize( 0 ) );
bool rootDecoClicked = vp.x() > decoLeft && vp.x() < decoRight;
if( !selectMode && i->isSelected() && !rootDecoClicked )
setActive( i );
}
}
void KNHeaderView::contentsMouseDoubleClickEvent( TQMouseEvent *e )
{
if (!e) return;
TQListViewItem *i = itemAt( contentsToViewport(e->pos()) );
if (i) {
emit doubleClick( i );
return;
}
KListView::contentsMouseDoubleClickEvent( e );
}
void KNHeaderView::keyPressEvent(TQKeyEvent *e)
{
if (!e) return;
TQListViewItem *i = currentItem();
switch(e->key()) {
case Key_Space:
case Key_Backspace:
case Key_Delete:
e->ignore(); // don't eat them
break;
case Key_Enter:
case Key_Return:
setActive( i );
break;
default:
KListView::keyPressEvent (e);
}
}
TQDragObject* KNHeaderView::dragObject()
{
KNHdrViewItem *item = static_cast<KNHdrViewItem*>( itemAt(viewport()->mapFromGlobal(TQCursor::pos())) );
if (item)
return item->dragObject();
else
return 0;
}
void KNHeaderView::slotSizeChanged( int section, int, int newSize )
{
viewport()->tqrepaint( header()->sectionPos(section), 0, newSize, visibleHeight(), false);
}
bool KNHeaderView::eventFilter(TQObject *o, TQEvent *e)
{
if ((e->type() == TQEvent::KeyPress) && (static_cast<TQKeyEvent*>(e)->key() == Key_Tab)) {
emit(focusChangeRequest(this));
if (!hasFocus()) // focusChangeRequest was successful
return true;
}
// right click on header
if ( e->type() == TQEvent::MouseButtonPress &&
static_cast<TQMouseEvent*>(e)->button() == RightButton &&
o->isA(TQHEADER_OBJECT_NAME_STRING) )
{
mPopup->popup( static_cast<TQMouseEvent*>(e)->globalPos() );
return true;
}
return KListView::eventFilter(o, e);
}
void KNHeaderView::focusInEvent(TQFocusEvent *e)
{
TQListView::focusInEvent(e);
emit focusChanged(e);
}
void KNHeaderView::focusOutEvent(TQFocusEvent *e)
{
TQListView::focusOutEvent(e);
emit focusChanged(e);
}
void KNHeaderView::resetCurrentTime()
{
mDateFormatter.reset();
TQTimer::singleShot( 1000, this, TQT_SLOT(resetCurrentTime()) );
}
//BEGIN: KNHeaderViewToolTip ==================================================
KNHeaderViewToolTip::KNHeaderViewToolTip( KNHeaderView *parent ) :
TQToolTip( parent->viewport() ),
listView( parent )
{
}
void KNHeaderViewToolTip::maybeTip( const TQPoint &p )
{
const KNHdrViewItem *item = static_cast<KNHdrViewItem*>( listView->itemAt( p ) );
if ( !item )
return;
const int column = listView->header()->sectionAt( p.x() );
if ( column == -1 )
return;
if ( !item->showToolTip( column ) )
return;
const TQRect tqitemRect = listView->tqitemRect( item );
if ( !tqitemRect.isValid() )
return;
const TQRect headerRect = listView->header()->sectionRect( column );
if ( !headerRect.isValid() )
return;
tip( TQRect( headerRect.left(), tqitemRect.top(), headerRect.width(), tqitemRect.height() ),
TQStyleSheet::escape( item->text( column ) ) );
}
//END: KNHeaderViewToolTip ====================================================
#include "headerview.moc"