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# kjanuswidget.cpp

    00001 /*  This file is part of the KDE Libraries
    00002  *  Copyright (C) 1999-2000 Espen Sand (espensa@online.no)
    00003  *
    00004  *  This library is free software; you can redistribute it and/or
    00005  *  modify it under the terms of the GNU Library General Public
    00006  *  License as published by the Free Software Foundation; either
    00007  *  version 2 of the License, or (at your option) any later version.
    00008  *
    00009  *  This library is distributed in the hope that it will be useful,
    00010  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
    00011  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00012  *  Library General Public License for more details.
    00013  *
    00014  *  You should have received a copy of the GNU Library General Public License
    00015  *  along with this library; see the file COPYING.LIB.  If not, write to
    00016  *  the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00017  *  Boston, MA 02111-1307, USA.
    00018  */
    00019
    00020 #include <qbitmap.h>
    00021 #include <qgrid.h>
    00022 #include <qhbox.h>
    00023 #include <qheader.h>
    00024 #include <qlabel.h>
    00025 #include <qlayout.h>
    00026 #include <qobjectlist.h>
    00027 #include <qpixmap.h>
    00028 #include <qsplitter.h>
    00029 #include <qtabwidget.h>
    00030 #include <qvbox.h>
    00031 #include <qwidgetstack.h>
    00032 #include <qpainter.h>
    00033 #include <qstyle.h>
    00034
    00035 #include <kapplication.h>
    00036 #include <kdialog.h> // Access to some static members
    00037 #include <klocale.h>
    00038 #include <kglobal.h>
    00039 #include <kglobalsettings.h>
    00040 #include <kseparator.h>
    00041 #include <kdebug.h>
    00042 #include "kjanuswidget.h"
    00043 #include <klistview.h>
    00044
    00045 class KJanusWidget::IconListItem : public QListBoxItem
    00046 {
    00047   public:
    00048     IconListItem( QListBox *listbox, const QPixmap &pixmap,
    00049                    const QString &text );
    00050     virtual int height( const QListBox *lb ) const;
    00051     virtual int width( const QListBox *lb ) const;
    00052     int expandMinimumWidth( int width );
    00053
    00054   protected:
    00055     const QPixmap &defaultPixmap();
    00056     void paint( QPainter *painter );
    00057
    00058   private:
    00059     QPixmap mPixmap;
    00060     int mMinimumWidth;
    00061 };
    00062
    00063 // Added to make sure that the indices returned by KJanusWidget::pageIndex()
    00064 // remain constant and safe to store.
    00065 // Ravi <ravi@ee.eng.ohio-state.edu> Sun Feb 23 2003
    00066 class KJanusWidget::KJanusWidgetPrivate
    00067 {
    00068 public:
    00069   KJanusWidgetPrivate() : mNextPageIndex(0) { }
    00070
    00071   int mNextPageIndex; // The next page index.
    00072
    00073   // Dictionary for multipage modes.
    00074   QMap<int,QWidget*> mIntToPage;
    00075   // Reverse dictionary. Used because showPage() may be performance critical.
    00076   QMap<QWidget*,int> mPageToInt;
    00077   // Dictionary of title string associated with page.
    00078   QMap<int, QString> mIntToTitle;
    00079 };
    00080
    00081 template class QPtrList<QListViewItem>;
    00082
    00083
    00084 KJanusWidget::KJanusWidget( QWidget *parent, const char *name, int face )
    00085   : QWidget( parent, name, 0 ),
    00086     mValid(false), mPageList(0),
    00087     mTitleList(0), mFace(face), mTitleLabel(0), mActivePageWidget(0),
    00088     mShowIconsInTreeList(false), d(0)
    00089 {
    00090   QVBoxLayout *topLayout = new QVBoxLayout( this );
    00091
    00092   if( mFace == TreeList || mFace == IconList )
    00093   {
    00094     d = new KJanusWidgetPrivate;
    00095
    00096     QFrame *page;
    00097     if( mFace == TreeList )
    00098     {
    00099       QSplitter *splitter = new QSplitter( this );
    00100       topLayout->addWidget( splitter, 10 );
    00101       mTreeListResizeMode = QSplitter::KeepSize;
    00102
    00103       mTreeList = new KListView( splitter );
    00104       mTreeList->addColumn( QString::fromLatin1("") );
    00105       mTreeList->header()->hide();
    00106       mTreeList->setRootIsDecorated(true);
    00107       mTreeList->setSorting( -1 );
    00108       connect( mTreeList, SIGNAL(selectionChanged()), SLOT(slotShowPage()) );
    00109       connect( mTreeList, SIGNAL(clicked(QListViewItem *)), SLOT(slotItemClicked(QListViewItem *)));
    00110
    00111       //
    00112       // Page area. Title at top with a separator below and a pagestack using
    00113       // all available space at bottom.
    00114       //
    00115       QFrame *p = new QFrame( splitter );
    00116
    00117       QHBoxLayout *hbox = new QHBoxLayout( p, 0, 0 );
    00118       hbox->addSpacing( KDialog::spacingHint() );
    00119
    00120       page = new QFrame( p );
    00121       hbox->addWidget( page, 10 );
    00122     }
    00123     else
    00124     {
    00125       QHBoxLayout *hbox = new QHBoxLayout( topLayout );
    00126       mIconList = new IconListBox( this );
    00127
    00128       QFont listFont( mIconList->font() );
    00129       listFont.setBold( true );
    00130       mIconList->setFont( listFont );
    00131
    00132       mIconList->verticalScrollBar()->installEventFilter( this );
    00133       hbox->addWidget( mIconList );
    00134       connect( mIconList, SIGNAL(selectionChanged()), SLOT(slotShowPage()));
    00135       hbox->addSpacing( KDialog::spacingHint() );
    00136       page = new QFrame( this );
    00137       hbox->addWidget( page, 10 );
    00138     }
    00139
    00140     //
    00141     // Rest of page area. Title at top with a separator below and a
    00142     // pagestack using all available space at bottom.
    00143     //
    00144
    00145     QVBoxLayout *vbox = new QVBoxLayout( page, 0, KDialog::spacingHint() );
    00146
    00147     mTitleLabel = new QLabel( QString::fromLatin1("Empty page"), page, "KJanusWidgetTitleLabel" );
    00148     vbox->addWidget( mTitleLabel );
    00149
    00150     QFont titleFont( mTitleLabel->font() );
    00151     titleFont.setBold( true );
    00152     mTitleLabel->setFont( titleFont );
    00153
    00154     mTitleSep = new KSeparator( page );
    00155     mTitleSep->setFrameStyle( QFrame::HLine|QFrame::Plain );
    00156     vbox->addWidget( mTitleSep );
    00157
    00158     mPageStack = new QWidgetStack( page );
    00159     connect(mPageStack, SIGNAL(aboutToShow(QWidget *)),
    00160             this, SIGNAL(aboutToShowPage(QWidget *)));
    00161     vbox->addWidget( mPageStack, 10 );
    00162   }
    00163   else if( mFace == Tabbed )
    00164   {
    00165     d = new KJanusWidgetPrivate;
    00166
    00167     mTabControl = new QTabWidget( this );
    00168     mTabControl->setMargin (KDialog::marginHint());
    00169     topLayout->addWidget( mTabControl, 10 );
    00170   }
    00171   else if( mFace == Swallow )
    00172   {
    00173     mSwallowPage = new QWidget( this );
    00174     topLayout->addWidget( mSwallowPage, 10 );
    00175   }
    00176   else
    00177   {
    00178     mFace = Plain;
    00179     mPlainPage = new QFrame( this );
    00180     topLayout->addWidget( mPlainPage, 10 );
    00181   }
    00182
    00183   if ( kapp )
    00184     connect(kapp,SIGNAL(kdisplayFontChanged()),SLOT(slotFontChanged()));
    00185   mValid = true;
    00186
    00187   setSwallowedWidget(0); // Set default size if 'mFace' is Swallow.
    00188 }
    00189
    00190
    00191 KJanusWidget::~KJanusWidget()
    00192 {
    00193   delete d;
    00194 }
    00195
    00196
    00197 bool KJanusWidget::isValid() const
    00198 {
    00199   return( mValid );
    00200 }
    00201
    00202
    00203 QFrame *KJanusWidget::plainPage()
    00204 {
    00205   return( mPlainPage );
    00206 }
    00207
    00208
    00209 int KJanusWidget::face() const
    00210 {
    00211   return( mFace );
    00212 }
    00213
    00214 QWidget *KJanusWidget::FindParent()
    00215 {
    00216   if( mFace == Tabbed ) {
    00217     return mTabControl;
    00218   }
    00219   else {
    00220     return this;
    00221   }
    00222 }
    00223
    00224 QFrame *KJanusWidget::addPage( const QStringList &items, const QString &header,
    00225                                const QPixmap &pixmap )
    00226 {
    00227   if( mValid == false )
    00228   {
    00229     kdDebug() << "addPage: Invalid object" << endl;
    00230     return( 0 );
    00231   }
    00232
    00233   QFrame *page = new QFrame( FindParent(), "page" );
    00234   addPageWidget( page, items, header, pixmap );
    00235
    00236   return page;
    00237 }
    00238
    00239 void KJanusWidget::pageGone( QObject *obj )
    00240 {
    00241   removePage( static_cast<QWidget*>( obj ) );
    00242 }
    00243
    00244 QFrame *KJanusWidget::addPage( const QString &itemName, const QString &header,
    00245                                const QPixmap &pixmap )
    00246 {
    00247   QStringList items;
    00248   items << itemName;
    00249   return addPage(items, header, pixmap);
    00250 }
    00251
    00252
    00253
    00254 QVBox *KJanusWidget::addVBoxPage( const QStringList &items,
    00255                                   const QString &header,
    00256                                   const QPixmap &pixmap )
    00257 {
    00258   if( mValid == false )
    00259   {
    00260     kdDebug() << "addPage: Invalid object" << endl;
    00261     return( 0 );
    00262   }
    00263
    00264   QVBox *page = new QVBox(FindParent() , "page" );
    00265   page->setSpacing( KDialog::spacingHint() );
    00266   addPageWidget( page, items, header, pixmap );
    00267
    00268   return page;
    00269 }
    00270
    00271 QVBox *KJanusWidget::addVBoxPage( const QString &itemName,
    00272                                   const QString &header,
    00273                                   const QPixmap &pixmap )
    00274 {
    00275   QStringList items;
    00276   items << itemName;
    00277   return addVBoxPage(items, header, pixmap);
    00278 }
    00279
    00280 QHBox *KJanusWidget::addHBoxPage( const QStringList &items,
    00281                                   const QString &header,
    00282                                   const QPixmap &pixmap )
    00283 {
    00284   if( mValid == false ) {
    00285     kdDebug() << "addPage: Invalid object" << endl;
    00286     return( 0 );
    00287   }
    00288
    00289   QHBox *page = new QHBox(FindParent(), "page");
    00290   page->setSpacing( KDialog::spacingHint() );
    00291   addPageWidget( page, items, header, pixmap );
    00292
    00293   return page;
    00294 }
    00295
    00296 QHBox *KJanusWidget::addHBoxPage( const QString &itemName,
    00297                                   const QString &header,
    00298                                   const QPixmap &pixmap )
    00299 {
    00300   QStringList items;
    00301   items << itemName;
    00302   return addHBoxPage(items, header, pixmap);
    00303 }
    00304
    00305 QGrid *KJanusWidget::addGridPage( int n, Orientation dir,
    00306                                   const QStringList &items,
    00307                                   const QString &header,
    00308                                   const QPixmap &pixmap )
    00309 {
    00310   if( mValid == false )
    00311   {
    00312     kdDebug() << "addPage: Invalid object" << endl;
    00313     return( 0 );
    00314   }
    00315
    00316   QGrid *page = new QGrid( n, dir, FindParent(), "page" );
    00317   page->setSpacing( KDialog::spacingHint() );
    00318   addPageWidget( page, items, header, pixmap );
    00319
    00320   return page;
    00321 }
    00322
    00323
    00324 QGrid *KJanusWidget::addGridPage( int n, Orientation dir,
    00325                                   const QString &itemName,
    00326                                   const QString &header,
    00327                                   const QPixmap &pixmap )
    00328 {
    00329   QStringList items;
    00330   items << itemName;
    00331   return addGridPage(n, dir, items, header, pixmap);
    00332 }
    00333
    00334 void KJanusWidget::InsertTreeListItem(const QStringList &items, const QPixmap &pixmap, QFrame *page)
    00335 {
    00336   bool isTop = true;
    00337   QListViewItem *curTop = 0, *child, *last, *newChild;
    00338   unsigned int index = 1;
    00339   QStringList curPath;
    00340
    00341   for ( QStringList::ConstIterator it = items.begin(); it != items.end(); ++it, index++ ) {
    00342     QString name = (*it);
    00343     bool isPath = ( index != items.count() );
    00344
    00345     // Find the first child.
    00346     if (isTop) {
    00347       child = mTreeList->firstChild();
    00348     }
    00349     else {
    00350       child = curTop->firstChild();
    00351     }
    00352
    00353     // Now search for a child with the current Name, and if it we doesn't
    00354     // find it, then remember the location of the last child.
    00355     for (last = 0; child && child->text(0) != name ; last = child, child = child->nextSibling());
    00356
    00357     if (last == 0 && child == 0) {
    00358       // This node didn't have any children at all, lets just insert the
    00359       // new child.
    00360       if (isTop)
    00361         newChild = new QListViewItem(mTreeList, name);
    00362       else
    00363         newChild = new QListViewItem(curTop, name);
    00364
    00365     }
    00366     else if (child != 0) {
    00367       // we found the given name in this child.
    00368       if (!isPath) {
    00369         kdDebug() << "The element inserted was already in the TreeList box!" << endl;
    00370         return;
    00371       }
    00372       else {
    00373         // Ok we found the folder
    00374         newChild  = child;
    00375       }
    00376     }
    00377     else {
    00378       // the node had some children, but we didn't find the given name
    00379       if (isTop)
    00380         newChild = new QListViewItem(mTreeList, last, name);
    00381       else
    00382         newChild = new QListViewItem(curTop, last, name);
    00383     }
    00384
    00385     // Now make the element expandable if it is a path component, and make
    00386     // ready for next loop
    00387     if (isPath) {
    00388       newChild->setExpandable(true);
    00389       curTop = newChild;
    00390       isTop = false;
    00391       curPath << name;
    00392
    00393       QString key = curPath.join("_/_");
    00394       if (mFolderIconMap.contains(key)) {
    00395         QPixmap p = mFolderIconMap[key];
    00396         newChild->setPixmap(0,p);
    00397       }
    00398     }
    00399     else {
    00400       if (mShowIconsInTreeList) {
    00401         newChild->setPixmap(0, pixmap);
    00402       }
    00403       mTreeListToPageStack.insert(newChild, page);
    00404     }
    00405   }
    00406 }
    00407
    00408 void KJanusWidget::addPageWidget( QFrame *page, const QStringList &items,
    00409                                   const QString &header,const QPixmap &pixmap )
    00410 {
    00411   connect(page, SIGNAL(destroyed(QObject*)), SLOT(pageGone(QObject*)));
    00412
    00413   if( mFace == Tabbed )
    00414   {
    00415     mTabControl->addTab (page, items.last());
    00416     d->mIntToPage[d->mNextPageIndex] = static_cast<QWidget*>(page);
    00417     d->mPageToInt[static_cast<QWidget*>(page)] = d->mNextPageIndex;
    00418     d->mNextPageIndex++;
    00419   }
    00420   else if( mFace == TreeList || mFace == IconList )
    00421   {
    00422     d->mIntToPage[d->mNextPageIndex] = static_cast<QWidget*>(page);
    00423     d->mPageToInt[static_cast<QWidget*>(page)] = d->mNextPageIndex;
    00424     mPageStack->addWidget( page, 0 );
    00425
    00426     if (items.count() == 0) {
    00427       kdDebug() << "Invalid QStringList, with zero items" << endl;
    00428       return;
    00429     }
    00430
    00431     if( mFace == TreeList )
    00432     {
    00433       InsertTreeListItem(items, pixmap, page);
    00434     }
    00435     else // mFace == IconList
    00436     {
    00437       QString itemName = items.last();
    00438       IconListItem *item = new IconListItem( mIconList, pixmap, itemName );
    00439       //
    00440       // 2000-06-01 Espen Sand: If I do this with Qt 2.1.1 all sorts of
    00441       // strange things happen. With Qt <= 2.1 it worked but now I must
    00442       // either specify the listbox in the constructor on the item
    00443       // or as below, not both.
    00444       // mIconList->insertItem( item );
    00445       //
    00446       mIconListToPageStack.insert(item, page);
    00447       mIconList->invalidateHeight();
    00448       mIconList->invalidateWidth();
    00449
    00450       if (mIconList->isVisible())
    00451         mIconList->updateWidth();
    00452     }
    00453
    00454     //
    00455     // Make sure the title label is sufficiently wide
    00456     //
    00457     QString lastName = items.last();
    00458     const QString &title = (header != QString::null ? header : lastName);
    00459     QRect r = mTitleLabel->fontMetrics().boundingRect( title );
    00460     if( mTitleLabel->minimumWidth() < r.width() )
    00461     {
    00462       mTitleLabel->setMinimumWidth( r.width() );
    00463     }
    00464     d->mIntToTitle[d->mNextPageIndex] = title;
    00465     if( d->mIntToTitle.count() == 1 )
    00466     {
    00467       showPage(0);
    00468     }
    00469     d->mNextPageIndex++;
    00470   }
    00471   else
    00472   {
    00473     kdDebug() << "KJanusWidget::addPageWidget: can only add a page in Tabbed, TreeList or IconList modes" << endl;
    00474   }
    00475
    00476 }
    00477
    00478 void KJanusWidget::setFolderIcon(const QStringList &path, const QPixmap &pixmap)
    00479 {
    00480   QString key = path.join("_/_");
    00481   mFolderIconMap.insert(key,pixmap);
    00482 }
    00483
    00484
    00485
    00486 bool KJanusWidget::setSwallowedWidget( QWidget *widget )
    00487 {
    00488   if( mFace != Swallow || mValid == false )
    00489   {
    00490     return( false );
    00491   }
    00492
    00493   //
    00494   // Remove current layout and make a new.
    00495   //
    00496   if( mSwallowPage->layout() != 0 )
    00497   {
    00498     delete mSwallowPage->layout();
    00499   }
    00500   QGridLayout *gbox = new QGridLayout( mSwallowPage, 1, 1, 0 );
    00501
    00502   //
    00503   // Hide old children
    00504   //
    00505   QObjectList *l = (QObjectList*)mSwallowPage->children(); // silence please
    00506   for( uint i=0; i < l->count(); i++ )
    00507   {
    00508     QObject *o = l->at(i);
    00509     if( o->isWidgetType() )
    00510     {
    00511       ((QWidget*)o)->hide();
    00512     }
    00513   }
    00514
    00515   //
    00516   // Add new child or make default size
    00517   //
    00518   if( widget == 0 )
    00519   {
    00520     gbox->addRowSpacing(0,100);
    00521     gbox->addColSpacing(0,100);
    00522     mSwallowPage->setMinimumSize(100,100);
    00523   }
    00524   else
    00525   {
    00526     if( widget->parent() != mSwallowPage )
    00527     {
    00528       widget->reparent( mSwallowPage, 0, QPoint(0,0) );
    00529     }
    00530     gbox->addWidget(widget, 0, 0 );
    00531     gbox->activate();
    00532     mSwallowPage->setMinimumSize( widget->minimumSize() );
    00533   }
    00534
    00535   return( true );
    00536 }
    00537
    00538 bool KJanusWidget::slotShowPage()
    00539 {
    00540   if( mValid == false )
    00541   {
    00542     return( false );
    00543   }
    00544
    00545   if( mFace == TreeList )
    00546   {
    00547     QListViewItem *node = mTreeList->selectedItem();
    00548     if( node == 0 ) { return( false ); }
    00549
    00550     QWidget *stackItem = mTreeListToPageStack[node];
    00551     return showPage(d->mPageToInt[stackItem]);
    00552   }
    00553   else if( mFace == IconList )
    00554   {
    00555     QListBoxItem *node = mIconList->item( mIconList->currentItem() );
    00556     if( node == 0 ) { return( false ); }
    00557     QWidget *stackItem = mIconListToPageStack[node];
    00558     return showPage(d->mPageToInt[stackItem]);
    00559   }
    00560
    00561   return( false );
    00562 }
    00563
    00564
    00565 bool KJanusWidget::showPage( int index )
    00566 {
    00567   if( d == 0 || mValid == false )
    00568   {
    00569     return( false );
    00570   }
    00571   else
    00572   {
    00573     return showPage(d->mIntToPage[index]);
    00574   }
    00575 }
    00576
    00577
    00578 bool KJanusWidget::showPage( QWidget *w )
    00579 {
    00580   if( w == 0 || mValid == false )
    00581   {
    00582     return( false );
    00583   }
    00584
    00585   if( mFace == TreeList || mFace == IconList )
    00586   {
    00587     mPageStack->raiseWidget( w );
    00588     mActivePageWidget = w;
    00589
    00590     int index = d->mPageToInt[w];
    00591     mTitleLabel->setText( d->mIntToTitle[index] );
    00592     if( mFace == TreeList )
    00593     {
    00594       QMap<QListViewItem *, QWidget *>::Iterator it;
    00595       for (it = mTreeListToPageStack.begin(); it != mTreeListToPageStack.end(); ++it){
    00596         QListViewItem *key = it.key();
    00597         QWidget *val = it.data();
    00598         if (val == w) {
    00599           mTreeList->setSelected(key, true );
    00600           break;
    00601         }
    00602       }
    00603     }
    00604     else
    00605     {
    00606       QMap<QListBoxItem *, QWidget *>::Iterator it;
    00607       for (it = mIconListToPageStack.begin(); it != mIconListToPageStack.end(); ++it){
    00608         QListBoxItem *key = it.key();
    00609         QWidget *val = it.data();
    00610         if (val == w) {
    00611           mIconList->setSelected( key, true );
    00612           break;
    00613         }
    00614       }
    00615     }
    00616   }
    00617   else if( mFace == Tabbed )
    00618   {
    00619     mTabControl->showPage(w);
    00620     mActivePageWidget = w;
    00621   }
    00622   else
    00623   {
    00624     return( false );
    00625   }
    00626
    00627   return( true );
    00628 }
    00629
    00630
    00631 int KJanusWidget::activePageIndex() const
    00632 {
    00633   if( mFace == TreeList) {
    00634     QListViewItem *node = mTreeList->selectedItem();
    00635     if( node == 0 ) { return -1; }
    00636     QWidget *stackItem = mTreeListToPageStack[node];
    00637     return d->mPageToInt[stackItem];
    00638   }
    00639   else if (mFace == IconList) {
    00640     QListBoxItem *node = mIconList->item( mIconList->currentItem() );
    00641     if( node == 0 ) { return( false ); }
    00642     QWidget *stackItem = mIconListToPageStack[node];
    00643     return d->mPageToInt[stackItem];
    00644   }
    00645   else if( mFace == Tabbed ) {
    00646     QWidget *widget = mTabControl->currentPage();
    00647     return( widget == 0 ? -1 : d->mPageToInt[widget] );
    00648   }
    00649   else {
    00650     return( -1 );
    00651   }
    00652 }
    00653
    00654
    00655 int KJanusWidget::pageIndex( QWidget *widget ) const
    00656 {
    00657   if( widget == 0 )
    00658   {
    00659     return( -1 );
    00660   }
    00661   else if( mFace == TreeList || mFace == IconList )
    00662   {
    00663     return( d->mPageToInt[widget] );
    00664   }
    00665   else if( mFace == Tabbed )
    00666   {
    00667     //
    00668     // The user gets the real page widget with addVBoxPage(), addHBoxPage()
    00669     // and addGridPage() but not with addPage() which returns a child of
    00670     // the toplevel page. addPage() returns a QFrame so I check for that.
    00671     //
    00672     if( widget->isA("QFrame") )
    00673     {
    00674       return( d->mPageToInt[widget->parentWidget()] );
    00675     }
    00676     else
    00677     {
    00678       return( d->mPageToInt[widget] );
    00679     }
    00680   }
    00681   else
    00682   {
    00683     return( -1 );
    00684   }
    00685 }
    00686
    00687 void KJanusWidget::slotFontChanged()
    00688 {
    00689   if( mTitleLabel != 0 )
    00690   {
    00691     mTitleLabel->setFont( KGlobalSettings::generalFont() );
    00692     QFont titleFont( mTitleLabel->font() );
    00693     titleFont.setBold( true );
    00694     mTitleLabel->setFont( titleFont );
    00695   }
    00696
    00697   if( mFace == IconList )
    00698   {
    00699     QFont listFont( mIconList->font() );
    00700     listFont.setBold( true );
    00701     mIconList->setFont( listFont );
    00702     mIconList->invalidateHeight();
    00703     mIconList->invalidateWidth();
    00704   }
    00705 }
    00706
    00707 // makes the treelist behave like the list of kcontrol
    00708 void KJanusWidget::slotItemClicked(QListViewItem *it)
    00709 {
    00710   if(it && (it->childCount()>0))
    00711     it->setOpen(!it->isOpen());
    00712 }
    00713
    00714 void KJanusWidget::setFocus()
    00715 {
    00716   if( mValid == false ) { return; }
    00717   if( mFace == TreeList )
    00718   {
    00719     mTreeList->setFocus();
    00720   }
    00721   if( mFace == IconList )
    00722   {
    00723     mIconList->setFocus();
    00724   }
    00725   else if( mFace == Tabbed )
    00726   {
    00727     mTabControl->setFocus();
    00728   }
    00729   else if( mFace == Swallow )
    00730   {
    00731     mSwallowPage->setFocus();
    00732   }
    00733   else if( mFace == Plain )
    00734   {
    00735     mPlainPage->setFocus();
    00736   }
    00737 }
    00738
    00739
    00740 QSize KJanusWidget::minimumSizeHint() const
    00741 {
    00742   if( mFace == TreeList || mFace == IconList )
    00743   {
    00744     QSize s1( KDialog::spacingHint(), KDialog::spacingHint()*2 );
    00745     QSize s2(0,0);
    00746     QSize s3(0,0);
    00747     QSize s4( mPageStack->sizeHint() );
    00748
    00749     if( mFace == TreeList )
    00750     {
    00751 #if QT_VERSION < 300
    00752       s1.rwidth() += style().splitterWidth();
    00753 #else
    00754       s1.rwidth() += style().pixelMetric( QStyle::PM_SplitterWidth );
    00755 #endif
    00756       s2 = mTreeList->minimumSize();
    00757     }
    00758     else
    00759     {
    00760       mIconList->updateMinimumHeight();
    00761       mIconList->updateWidth();
    00762       s2 = mIconList->minimumSize();
    00763     }
    00764
    00765     if( mTitleLabel->isVisible() == true )
    00766     {
    00767       s3 += mTitleLabel->sizeHint();
    00768       s3.rheight() += mTitleSep->minimumSize().height();
    00769     }
    00770
    00771     //
    00772     // Select the tallest item. It has only effect in IconList mode
    00773     //
    00774     int h1 = s1.rheight() + s3.rheight() + s4.height();
    00775     int h2 = QMAX( h1, s2.rheight() );
    00776
    00777     return( QSize( s1.width()+s2.width()+QMAX(s3.width(),s4.width()), h2 ) );
    00778   }
    00779   else if( mFace == Tabbed )
    00780   {
    00781     return( mTabControl->sizeHint() );
    00782   }
    00783   else if( mFace == Swallow )
    00784   {
    00785     return( mSwallowPage->minimumSize() );
    00786   }
    00787   else if( mFace == Plain )
    00788   {
    00789     return( mPlainPage->sizeHint() );
    00790   }
    00791   else
    00792   {
    00793     return( QSize( 100, 100 ) ); // Should never happen though.
    00794   }
    00795
    00796 }
    00797
    00798
    00799 QSize KJanusWidget::sizeHint() const
    00800 {
    00801   return( minimumSizeHint() );
    00802 }
    00803
    00804
    00805 void KJanusWidget::setTreeListAutoResize( bool state )
    00806 {
    00807   if( mFace == TreeList )
    00808   {
    00809     mTreeListResizeMode = state == false ?
    00810       QSplitter::KeepSize : QSplitter::Stretch;
    00811     QSplitter *splitter = (QSplitter*)(mTreeList->parentWidget());
    00812     splitter->setResizeMode( mTreeList, mTreeListResizeMode );
    00813   }
    00814 }
    00815
    00816
    00817 void KJanusWidget::setIconListAllVisible( bool state )
    00818 {
    00819   if( mFace == IconList )
    00820   {
    00821     mIconList->setShowAll( state );
    00822   }
    00823 }
    00824
    00825 void KJanusWidget::setShowIconsInTreeList( bool state )
    00826 {
    00827   mShowIconsInTreeList = state;
    00828 }
    00829
    00830 void KJanusWidget::setRootIsDecorated( bool state )
    00831 {
    00832   if( mFace == TreeList ) {
    00833     mTreeList->setRootIsDecorated(state);
    00834   }
    00835 }
    00836
    00837
    00838 void KJanusWidget::showEvent( QShowEvent * )
    00839 {
    00840   if( mFace == TreeList )
    00841   {
    00842     QSplitter *splitter = (QSplitter*)(mTreeList->parentWidget());
    00843     splitter->setResizeMode( mTreeList, mTreeListResizeMode );
    00844   }
    00845 }
    00846
    00847
    00848 //
    00849 // 2000-13-02 Espen Sand
    00850 // It should be obvious that this eventfilter must only be
    00851 // be installed on the vertical scrollbar of the mIconList.
    00852 //
    00853 bool KJanusWidget::eventFilter( QObject *o, QEvent *e )
    00854 {
    00855   if( e->type() == QEvent::Show )
    00856   {
    00857     IconListItem *item = (IconListItem*)mIconList->item(0);
    00858     if( item != 0 )
    00859     {
    00860       int lw = item->width( mIconList );
    00861       int sw = mIconList->verticalScrollBar()->sizeHint().width();
    00862       mIconList->setFixedWidth( lw+sw+mIconList->frameWidth()*2 );
    00863     }
    00864   }
    00865   else if( e->type() == QEvent::Hide )
    00866   {
    00867     IconListItem *item = (IconListItem*)mIconList->item(0);
    00868     if( item != 0 )
    00869     {
    00870       int lw = item->width( mIconList );
    00871       mIconList->setFixedWidth( lw+mIconList->frameWidth()*2 );
    00872     }
    00873   }
    00874   return QWidget::eventFilter( o, e );
    00875 }
    00876
    00877
    00878
    00879 //
    00880 // Code for the icon list box
    00881 //
    00882
    00883
    00884 KJanusWidget::IconListBox::IconListBox( QWidget *parent, const char *name,
    00885                                         WFlags f )
    00886   :KListBox( parent, name, f ), mShowAll(false), mHeightValid(false),
    00887    mWidthValid(false)
    00888 {
    00889 }
    00890
    00891
    00892 void KJanusWidget::IconListBox::updateMinimumHeight()
    00893 {
    00894   if( mShowAll == true && mHeightValid == false )
    00895   {
    00896     int h = frameWidth()*2;
    00897     for( QListBoxItem *i = item(0); i != 0; i = i->next() )
    00898     {
    00899       h += i->height( this );
    00900     }
    00901     setMinimumHeight( h );
    00902     mHeightValid = true;
    00903   }
    00904 }
    00905
    00906
    00907 void KJanusWidget::IconListBox::updateWidth()
    00908 {
    00909   if( mWidthValid == false )
    00910   {
    00911     int maxWidth = 10;
    00912     for( QListBoxItem *i = item(0); i != 0; i = i->next() )
    00913     {
    00914       int w = ((IconListItem *)i)->width(this);
    00915       maxWidth = QMAX( w, maxWidth );
    00916     }
    00917
    00918     for( QListBoxItem *i = item(0); i != 0; i = i->next() )
    00919     {
    00920       ((IconListItem *)i)->expandMinimumWidth( maxWidth );
    00921     }
    00922
    00923     if( verticalScrollBar()->isVisible() )
    00924     {
    00925       maxWidth += verticalScrollBar()->sizeHint().width();
    00926     }
    00927
    00928     setFixedWidth( maxWidth + frameWidth()*2 );
    00929     mWidthValid = true;
    00930   }
    00931 }
    00932
    00933
    00934 void KJanusWidget::IconListBox::invalidateHeight()
    00935 {
    00936   mHeightValid = false;
    00937 }
    00938
    00939
    00940 void KJanusWidget::IconListBox::invalidateWidth()
    00941 {
    00942   mWidthValid = false;
    00943 }
    00944
    00945
    00946 void KJanusWidget::IconListBox::setShowAll( bool showAll )
    00947 {
    00948   mShowAll = showAll;
    00949   mHeightValid = false;
    00950 }
    00951
    00952
    00953
    00954 KJanusWidget::IconListItem::IconListItem( QListBox *listbox, const QPixmap &pixmap,
    00955                                           const QString &text )
    00956   : QListBoxItem( listbox )
    00957 {
    00958   mPixmap = pixmap;
    00959   if( mPixmap.isNull() == true )
    00960   {
    00961     mPixmap = defaultPixmap();
    00962   }
    00963   setText( text );
    00964   mMinimumWidth = 0;
    00965 }
    00966
    00967
    00968 int KJanusWidget::IconListItem::expandMinimumWidth( int width )
    00969 {
    00970   mMinimumWidth = QMAX( mMinimumWidth, width );
    00971   return( mMinimumWidth );
    00972 }
    00973
    00974
    00975 const QPixmap &KJanusWidget::IconListItem::defaultPixmap()
    00976 {
    00977   static QPixmap *pix=0;
    00978   if( pix == 0 )
    00979   {
    00980     pix = new QPixmap( 32, 32 );
    00981     QPainter p( pix );
    00982     p.eraseRect( 0, 0, pix->width(), pix->height() );
    00983     p.setPen( Qt::red );
    00984     p.drawRect ( 0, 0, pix->width(), pix->height() );
    00985     p.end();
    00986
    00987     QBitmap mask( pix->width(), pix->height(), true );
    00988     mask.fill( Qt::black );
    00989     p.begin( &mask );
    00990     p.setPen( Qt::white );
    00991     p.drawRect ( 0, 0, pix->width(), pix->height() );
    00992     p.end();
    00993
    00994     pix->setMask( mask );
    00995   }
    00996   return( *pix );
    00997 }
    00998
    00999
    01000 void KJanusWidget::IconListItem::paint( QPainter *painter )
    01001 {
    01002   QFontMetrics fm = painter->fontMetrics();
    01003   //int wt = fm.boundingRect(text()).width();
    01004   int wp = mPixmap.width();
    01005   int ht = fm.lineSpacing();
    01006   int hp = mPixmap.height();
    01007
    01008   painter->drawPixmap( (mMinimumWidth-wp)/2, 5, mPixmap );
    01009   if( text().isEmpty() == false )
    01010   {
    01011     painter->drawText( 0, hp+7, mMinimumWidth, ht, Qt::AlignCenter, text() );
    01012   }
    01013 }
    01014
    01015 int KJanusWidget::IconListItem::height( const QListBox *lb ) const
    01016 {
    01017   if( text().isEmpty() == true )
    01018   {
    01019     return( mPixmap.height() );
    01020   }
    01021   else
    01022   {
    01023     return( mPixmap.height() + lb->fontMetrics().lineSpacing()+10 );
    01024   }
    01025 }
    01026
    01027
    01028 int KJanusWidget::IconListItem::width( const QListBox *lb ) const
    01029 {
    01030   int wt = lb->fontMetrics().boundingRect(text()).width()+10;
    01031   int wp = mPixmap.width() + 10;
    01032   int w  = QMAX( wt, wp );
    01033   return( QMAX( w, mMinimumWidth ) );
    01034 }
    01035
    01036
    01037 void KJanusWidget::virtual_hook( int, void* )
    01038 { /*BASE::virtual_hook( id, data );*/ }
    01039
    01040 // Just remove the page from our stack of widgets. Do not modify the given widget in
    01041 // any way. No memory leak occurs as parent is not changed.
    01042 // Make this virtual in KDE 4.0.
    01043 // Ravikiran Rajagopal <ravi@ee.eng.ohio-state.edu>
    01044 void KJanusWidget::removePage( QWidget *page )
    01045 {
    01046   if (!d || !d->mPageToInt.contains(page))
    01047     return;
    01048
    01049   int index = d->mPageToInt[page];
    01050
    01051   if ( mFace == TreeList )
    01052   {
    01053     QMap<QListViewItem*, QWidget *>::Iterator i;
    01054     for( i = mTreeListToPageStack.begin(); i != mTreeListToPageStack.end(); ++i )
    01055       if (i.data()==page)
    01056       {
    01057         delete i.key();
    01058         mPageStack->removeWidget(page);
    01059         mTreeListToPageStack.remove(i);
    01060         d->mIntToTitle.remove(index);
    01061         d->mPageToInt.remove(page);
    01062         d->mIntToPage.remove(index);
    01063                 break;
    01064       }
    01065   }
    01066   else if ( mFace == IconList )
    01067   {
    01068     QMap<QListBoxItem*, QWidget *>::Iterator i;
    01069     for( i = mIconListToPageStack.begin(); i != mIconListToPageStack.end(); ++i )
    01070       if (i.data()==page)
    01071       {
    01072         delete i.key();
    01073         mPageStack->removeWidget(page);
    01074         mIconListToPageStack.remove(i);
    01075         d->mIntToTitle.remove(index);
    01076         d->mPageToInt.remove(page);
    01077         d->mIntToPage.remove(index);
    01078                 break;
    01079       }
    01080   }
    01081   else // Tabbed
    01082   {
    01083     mTabControl->removePage(page);
    01084     d->mPageToInt.remove(page);
    01085     d->mIntToPage.remove(index);
    01086   }
    01087 }
    01088
    01089 #include "kjanuswidget.moc"

This file is part of the documentation for kdelibs Version 3.1.5.
Documentation copyright © 1996-2002 the KDE developers.
Generated on Wed Jan 28 12:56:56 2004 by doxygen 1.3.4 written by Dimitri van Heesch, © 1997-2001