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428 lines
13 KiB
428 lines
13 KiB
/* This file is part of the KDE libraries
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Copyright (C) 2003 Stephan Binner <binner@kde.org>
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Copyright (C) 2003 Zack Rusin <zack@kde.org>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <tqapplication.h>
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#include <tqcursor.h>
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#include <tqpainter.h>
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#include <tqstyle.h>
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#include <tqtimer.h>
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#include <tqpushbutton.h>
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#include <tqtooltip.h>
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#include <kglobalsettings.h>
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#include <kiconloader.h>
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#include <klocale.h>
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#include "ktabbar.h"
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#include "ktabwidget.h"
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KTabBar::KTabBar( TQWidget *parent, const char *name )
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: TQTabBar( parent, name ), mReorderStartTab( -1 ), mReorderPreviousTab( -1 ),
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mHoverCloseButtonTab( 0 ), mDragSwitchTab( 0 ), mHoverCloseButton( 0 ),
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mHoverCloseButtonEnabled( false ), mHoverCloseButtonDelayed( true ),
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mTabReorderingEnabled( false ), mTabCloseActivatePrevious( false )
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{
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setAcceptDrops( true );
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setMouseTracking( true );
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mEnableCloseButtonTimer = new TQTimer( this );
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connect( mEnableCloseButtonTimer, TQT_SIGNAL( timeout() ), TQT_SLOT( enableCloseButton() ) );
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mActivateDragSwitchTabTimer = new TQTimer( this );
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connect( mActivateDragSwitchTabTimer, TQT_SIGNAL( timeout() ), TQT_SLOT( activateDragSwitchTab() ) );
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connect(this, TQT_SIGNAL(layoutChanged()), TQT_SLOT(onLayoutChange()));
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}
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KTabBar::~KTabBar()
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{
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//For the future
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//delete d;
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}
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void KTabBar::setTabEnabled( int id, bool enabled )
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{
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TQTab * t = tab( id );
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if ( t ) {
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if ( t->isEnabled() != enabled ) {
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t->setEnabled( enabled );
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TQRect r( t->rect() );
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if ( !enabled && id == currentTab() && count()>1 ) {
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TQPtrList<TQTab> *tablist = tabList();
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if ( mTabCloseActivatePrevious )
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t = tablist->at( count()-2 );
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else {
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int index = indexOf( id );
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index += ( index+1 == count() ) ? -1 : 1;
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t = tabAt( index );
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}
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if ( t->isEnabled() ) {
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r = r.unite( t->rect() );
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tablist->append( tablist->take( tablist->findRef( t ) ) );
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emit selected( t->identifier() );
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}
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}
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repaint( r );
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}
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}
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}
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void KTabBar::mouseDoubleClickEvent( TQMouseEvent *e )
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{
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if( e->button() != LeftButton )
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return;
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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emit( mouseDoubleClick( indexOf( tab->identifier() ) ) );
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return;
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}
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TQTabBar::mouseDoubleClickEvent( e );
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}
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void KTabBar::mousePressEvent( TQMouseEvent *e )
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{
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if( e->button() == LeftButton ) {
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mEnableCloseButtonTimer->stop();
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mDragStart = e->pos();
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}
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else if( e->button() == RightButton ) {
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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emit( contextMenu( indexOf( tab->identifier() ), mapToGlobal( e->pos() ) ) );
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return;
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}
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}
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TQTabBar::mousePressEvent( e );
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}
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void KTabBar::mouseMoveEvent( TQMouseEvent *e )
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{
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if ( e->state() == LeftButton ) {
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TQTab *tab = selectTab( e->pos() );
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if ( mDragSwitchTab && tab != mDragSwitchTab ) {
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mActivateDragSwitchTabTimer->stop();
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mDragSwitchTab = 0;
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}
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int delay = KGlobalSettings::dndEventDelay();
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TQPoint newPos = e->pos();
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if( newPos.x() > mDragStart.x()+delay || newPos.x() < mDragStart.x()-delay ||
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newPos.y() > mDragStart.y()+delay || newPos.y() < mDragStart.y()-delay )
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{
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if( tab ) {
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emit( initiateDrag( indexOf( tab->identifier() ) ) );
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return;
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}
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}
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}
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else if ( e->state() == MidButton ) {
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if (mReorderStartTab==-1) {
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int delay = KGlobalSettings::dndEventDelay();
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TQPoint newPos = e->pos();
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if( newPos.x() > mDragStart.x()+delay || newPos.x() < mDragStart.x()-delay ||
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newPos.y() > mDragStart.y()+delay || newPos.y() < mDragStart.y()-delay )
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{
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TQTab *tab = selectTab( e->pos() );
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if( tab && mTabReorderingEnabled ) {
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mReorderStartTab = indexOf( tab->identifier() );
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grabMouse( sizeAllCursor );
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return;
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}
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}
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}
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else {
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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int reorderStopTab = indexOf( tab->identifier() );
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if ( mReorderStartTab!=reorderStopTab && mReorderPreviousTab!=reorderStopTab ) {
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emit( moveTab( mReorderStartTab, reorderStopTab ) );
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mReorderPreviousTab=mReorderStartTab;
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mReorderStartTab=reorderStopTab;
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return;
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}
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}
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}
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}
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if ( mHoverCloseButtonEnabled && mReorderStartTab==-1) {
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TQTab *t = selectTab( e->pos() );
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if( t && t->iconSet() && t->isEnabled() ) {
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TQPixmap pixmap = t->iconSet()->pixmap( TQIconSet::Small, TQIconSet::Normal );
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TQRect rect( 0, 0, pixmap.width() + 4, pixmap.height() +4);
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int xoff = 0, yoff = 0;
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// The additional offsets were found by try and error, TODO: find the rational behind them
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if ( t == tab( currentTab() ) ) {
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xoff = style().pixelMetric( TQStyle::PM_TabBarTabShiftHorizontal, this ) + 3;
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yoff = style().pixelMetric( TQStyle::PM_TabBarTabShiftVertical, this ) - 4;
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}
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else {
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xoff = 7;
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yoff = 0;
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}
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rect.moveLeft( t->rect().left() + 2 + xoff );
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rect.moveTop( t->rect().center().y()-pixmap.height()/2 + yoff );
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if ( rect.contains( e->pos() ) ) {
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if ( mHoverCloseButton ) {
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if ( mHoverCloseButtonTab == t )
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return;
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mEnableCloseButtonTimer->stop();
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mHoverCloseButton->deleteLater();
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mHoverCloseButton = 0;
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}
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mHoverCloseButton = new TQPushButton( this );
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mHoverCloseButton->setIconSet( KGlobal::iconLoader()->loadIconSet("fileclose", KIcon::Toolbar, KIcon::SizeSmall) );
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mHoverCloseButton->setGeometry( rect );
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TQToolTip::add(mHoverCloseButton,i18n("Close this tab"));
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mHoverCloseButton->setFlat(true);
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mHoverCloseButton->show();
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if ( mHoverCloseButtonDelayed ) {
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mHoverCloseButton->setEnabled(false);
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mEnableCloseButtonTimer->start( TQApplication::doubleClickInterval(), true );
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}
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mHoverCloseButtonTab = t;
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connect( mHoverCloseButton, TQT_SIGNAL( clicked() ), TQT_SLOT( closeButtonClicked() ) );
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return;
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}
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}
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if ( mHoverCloseButton ) {
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mEnableCloseButtonTimer->stop();
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mHoverCloseButton->deleteLater();
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mHoverCloseButton = 0;
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}
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}
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TQTabBar::mouseMoveEvent( e );
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}
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void KTabBar::enableCloseButton()
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{
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mHoverCloseButton->setEnabled(true);
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}
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void KTabBar::activateDragSwitchTab()
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{
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TQTab *tab = selectTab( mapFromGlobal( TQCursor::pos() ) );
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if ( tab && mDragSwitchTab == tab )
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setCurrentTab( mDragSwitchTab );
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mDragSwitchTab = 0;
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}
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void KTabBar::mouseReleaseEvent( TQMouseEvent *e )
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{
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if( e->button() == MidButton ) {
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if ( mReorderStartTab==-1 ) {
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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emit( mouseMiddleClick( indexOf( tab->identifier() ) ) );
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return;
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}
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}
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else {
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releaseMouse();
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setCursor( arrowCursor );
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mReorderStartTab=-1;
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mReorderPreviousTab=-1;
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}
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}
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TQTabBar::mouseReleaseEvent( e );
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}
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void KTabBar::dragMoveEvent( TQDragMoveEvent *e )
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{
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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bool accept = false;
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// The receivers of the testCanDecode() signal has to adjust
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// 'accept' accordingly.
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emit testCanDecode( e, accept);
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if ( accept && tab != TQTabBar::tab( currentTab() ) ) {
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mDragSwitchTab = tab;
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mActivateDragSwitchTabTimer->start( TQApplication::doubleClickInterval()*2, true );
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}
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e->accept( accept );
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return;
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}
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e->accept( false );
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TQTabBar::dragMoveEvent( e );
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}
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void KTabBar::dropEvent( TQDropEvent *e )
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{
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TQTab *tab = selectTab( e->pos() );
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if( tab ) {
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mActivateDragSwitchTabTimer->stop();
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mDragSwitchTab = 0;
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emit( receivedDropEvent( indexOf( tab->identifier() ) , e ) );
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return;
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}
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TQTabBar::dropEvent( e );
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}
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#ifndef QT_NO_WHEELEVENT
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void KTabBar::wheelEvent( TQWheelEvent *e )
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{
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if ( e->orientation() == Horizontal )
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return;
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emit( wheelDelta( e->delta() ) );
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}
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#endif
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void KTabBar::setTabColor( int id, const TQColor& color )
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{
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TQTab *t = tab( id );
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if ( t ) {
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mTabColors.insert( id, color );
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repaint( t->rect(), false );
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}
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}
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const TQColor &KTabBar::tabColor( int id ) const
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{
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if ( mTabColors.contains( id ) )
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return mTabColors[id];
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return colorGroup().foreground();
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}
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int KTabBar::insertTab( TQTab *t, int index )
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{
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int res = TQTabBar::insertTab( t, index );
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if ( mTabCloseActivatePrevious && count() > 2 ) {
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TQPtrList<TQTab> *tablist = tabList();
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tablist->insert( count()-2, tablist->take( tablist->findRef( t ) ) );
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}
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return res;
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}
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void KTabBar::removeTab( TQTab *t )
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{
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mTabColors.remove( t->identifier() );
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TQTabBar::removeTab( t );
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}
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void KTabBar::paintLabel( TQPainter *p, const TQRect& br,
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TQTab *t, bool has_focus ) const
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{
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TQRect r = br;
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bool selected = currentTab() == t->identifier();
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if ( t->iconSet() ) {
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// the tab has an iconset, draw it in the right mode
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TQIconSet::Mode mode = ( t->isEnabled() && isEnabled() )
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? TQIconSet::Normal : TQIconSet::Disabled;
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if ( mode == TQIconSet::Normal && has_focus )
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mode = TQIconSet::Active;
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TQPixmap pixmap = t->iconSet()->pixmap( TQIconSet::Small, mode );
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int pixw = pixmap.width();
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int pixh = pixmap.height();
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r.setLeft( r.left() + pixw + 4 );
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r.setRight( r.right() + 2 );
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int inactiveXShift = style().pixelMetric( TQStyle::PM_TabBarTabShiftHorizontal, this );
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int inactiveYShift = style().pixelMetric( TQStyle::PM_TabBarTabShiftVertical, this );
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int right = t->text().isEmpty() ? br.right() - pixw : br.left() + 2;
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p->drawPixmap( right + (selected ? 0 : inactiveXShift),
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br.center().y() - pixh / 2 + (selected ? 0 : inactiveYShift),
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pixmap );
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}
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TQStyle::SFlags flags = TQStyle::Style_Default;
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if ( isEnabled() && t->isEnabled() )
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flags |= TQStyle::Style_Enabled;
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if ( has_focus )
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flags |= TQStyle::Style_HasFocus;
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TQColorGroup cg( colorGroup() );
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if ( mTabColors.contains( t->identifier() ) )
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cg.setColor( TQColorGroup::Foreground, mTabColors[t->identifier()] );
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style().drawControl( TQStyle::CE_TabBarLabel, p, this, r,
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t->isEnabled() ? cg : palette().disabled(),
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flags, TQStyleOption(t) );
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}
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bool KTabBar::isTabReorderingEnabled() const
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{
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return mTabReorderingEnabled;
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}
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void KTabBar::setTabReorderingEnabled( bool on )
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{
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mTabReorderingEnabled = on;
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}
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bool KTabBar::tabCloseActivatePrevious() const
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{
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return mTabCloseActivatePrevious;
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}
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void KTabBar::setTabCloseActivatePrevious( bool on )
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{
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mTabCloseActivatePrevious = on;
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}
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void KTabBar::closeButtonClicked()
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{
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emit closeRequest( indexOf( mHoverCloseButtonTab->identifier() ) );
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}
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void KTabBar::setHoverCloseButton( bool button )
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{
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mHoverCloseButtonEnabled = button;
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if ( !button )
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onLayoutChange();
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}
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bool KTabBar::hoverCloseButton() const
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{
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return mHoverCloseButtonEnabled;
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}
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void KTabBar::setHoverCloseButtonDelayed( bool delayed )
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{
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mHoverCloseButtonDelayed = delayed;
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}
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bool KTabBar::hoverCloseButtonDelayed() const
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{
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return mHoverCloseButtonDelayed;
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}
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void KTabBar::onLayoutChange()
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{
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mEnableCloseButtonTimer->stop();
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delete mHoverCloseButton;
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mHoverCloseButton = 0;
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mHoverCloseButtonTab = 0;
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mActivateDragSwitchTabTimer->stop();
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mDragSwitchTab = 0;
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}
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#include "ktabbar.moc"
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