From ae2a03c2941bf92573f89b88ef73f8aa842bea0a Mon Sep 17 00:00:00 2001 From: toma Date: Wed, 25 Nov 2009 17:56:58 +0000 Subject: Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features. BUG:215923 git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdetoys@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da --- kworldwatch/flow.cpp | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 135 insertions(+) create mode 100644 kworldwatch/flow.cpp (limited to 'kworldwatch/flow.cpp') diff --git a/kworldwatch/flow.cpp b/kworldwatch/flow.cpp new file mode 100644 index 0000000..ca06d16 --- /dev/null +++ b/kworldwatch/flow.cpp @@ -0,0 +1,135 @@ +/**************************************************************************** +** $Id$ +** +** Implementing your own layout: flow example +** +** Copyright (C) 1996 by Trolltech AS. All rights reserved. +** +** This file is part of an example program for Qt. This example +** program may be used, distributed and modified without limitation. +** +*****************************************************************************/ + +#include "flow.h" + +class SimpleFlowIterator :public QGLayoutIterator +{ +public: + SimpleFlowIterator( QPtrList *l ) :idx(0), list(l) {} + uint count() const; + QLayoutItem *current(); + QLayoutItem *next(); + QLayoutItem *takeCurrent(); + +private: + int idx; + QPtrList *list; + +}; + +uint SimpleFlowIterator::count() const +{ + return list->count(); +} + +QLayoutItem *SimpleFlowIterator::current() +{ + return idx < int(count()) ? list->at(idx) : 0; +} + +QLayoutItem *SimpleFlowIterator::next() +{ + idx++; return current(); +} + +QLayoutItem *SimpleFlowIterator::takeCurrent() +{ + return idx < int(count()) ? list->take( idx ) : 0; +} + +SimpleFlow::~SimpleFlow() +{ + deleteAllItems(); +} + + +int SimpleFlow::heightForWidth( int w ) const +{ + if ( cached_width != w ) { + //Not all C++ compilers support "mutable" yet: + SimpleFlow * mthis = (SimpleFlow*)this; + int h = mthis->doLayout( QRect(0,0,w,0), TRUE ); + mthis->cached_hfw = h; + mthis->cached_width = w; + return h; + } + return cached_hfw; +} + +void SimpleFlow::addItem( QLayoutItem *item) +{ + list.append( item ); +} + +bool SimpleFlow::hasHeightForWidth() const +{ + return TRUE; +} + +QSize SimpleFlow::sizeHint() const +{ + return minimumSize(); +} + +QSizePolicy::ExpandData SimpleFlow::expanding() const +{ + return QSizePolicy::NoDirection; +} + +QLayoutIterator SimpleFlow::iterator() +{ + return QLayoutIterator( new SimpleFlowIterator( &list ) ); +} + +void SimpleFlow::setGeometry( const QRect &r ) +{ + QLayout::setGeometry( r ); + doLayout( r ); +} + +int SimpleFlow::doLayout( const QRect &r, bool testonly ) +{ + int x = r.x(); + int y = r.y(); + int h = 0; //height of this line so far. + QPtrListIterator it(list); + QLayoutItem *o; + while ( (o=it.current()) != 0 ) { + ++it; + int nextX = x + o->sizeHint().width() + spacing(); + if ( nextX - spacing() > r.right() && h > 0 ) { + x = r.x(); + y = y + h + spacing(); + nextX = x + o->sizeHint().width() + spacing(); + h = 0; + } + if ( !testonly ) + o->setGeometry( QRect( QPoint( x, y ), o->sizeHint() ) ); + x = nextX; + h = QMAX( h, o->sizeHint().height() ); + } + return y + h - r.y(); +} + +QSize SimpleFlow::minimumSize() const +{ + QSize s(0,0); + QPtrListIterator it(list); + QLayoutItem *o; + while ( (o=it.current()) != 0 ) { + ++it; + s = s.expandedTo( o->minimumSize() ); + } + return s; +} + -- cgit v1.2.1