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852 lines
34 KiB
852 lines
34 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/customlayout/customlayout.doc:4 -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
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<title>Customized Layoutmanager</title>
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<style type="text/css"><!--
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fn { margin-left: 1cm; text-indent: -1cm; }
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a:link { color: #004faf; text-decoration: none }
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a:visited { color: #672967; text-decoration: none }
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body { background: #ffffff; color: black; }
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--></style>
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</head>
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<body>
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<table border="0" cellpadding="0" cellspacing="0" width="100%">
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<tr bgcolor="#E5E5E5">
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<td valign=center>
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<a href="index.html">
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<font color="#004faf">Home</font></a>
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| <a href="classes.html">
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<font color="#004faf">All Classes</font></a>
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<font color="#004faf">Main Classes</font></a>
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</td>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>Customized Layoutmanager</h1>
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<p>
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This examples demonstrates how to write customized layout (geometry) managers
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like card layouts, border layout and flow layouts.
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<p> See also: <a href="layout.html">Documentation of Geometry Management</a>.
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<p> <hr>
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<p> Header file of the flow layout:
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<p> <pre>/****************************************************************************
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** $Id: qt/flow.h 3.3.8 edited Jan 11 14:46 $
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**
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** Definition of simple flow layout for custom layout example
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**
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** Created : 979899
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**
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** Copyright (C) 1997-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef FLOW_H
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#define FLOW_H
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#include <<a href="qlayout-h.html">ntqlayout.h</a>>
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#include <<a href="tqptrlist-h.html">tqptrlist.h</a>>
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class SimpleFlow : public <a href="ntqlayout.html">TQLayout</a>
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{
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public:
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SimpleFlow( <a href="tqwidget.html">TQWidget</a> *parent, int border=0, int space=-1,
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const char *name=0 )
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: <a href="ntqlayout.html">TQLayout</a>( parent, border, space, name ),
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cached_width(0) {}
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SimpleFlow( <a href="ntqlayout.html">TQLayout</a>* parent, int space=-1, const char *name=0 )
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: <a href="ntqlayout.html">TQLayout</a>( parent, space, name ),
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cached_width(0) {}
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SimpleFlow( int space=-1, const char *name=0 )
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: <a href="ntqlayout.html">TQLayout</a>( space, name ),
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cached_width(0) {}
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~SimpleFlow();
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void addItem( <a href="qlayoutitem.html">TQLayoutItem</a> *item);
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bool hasHeightForWidth() const;
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int heightForWidth( int ) const;
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<a href="ntqsize.html">TQSize</a> sizeHint() const;
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<a href="ntqsize.html">TQSize</a> minimumSize() const;
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<a href="qlayoutiterator.html">TQLayoutIterator</a> iterator();
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TQSizePolicy::ExpandData expanding() const;
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protected:
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void setGeometry( const <a href="ntqrect.html">TQRect</a>& );
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private:
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int doLayout( const <a href="ntqrect.html">TQRect</a>&, bool testonly = FALSE );
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<a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> list;
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int cached_width;
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int cached_hfw;
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation of the flow layout:
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<p> <pre>/****************************************************************************
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** $Id: qt/flow.cpp 3.3.8 edited Jan 11 14:46 $
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**
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** Implementing your own layout: flow example
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**
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** Copyright (C) 1996-2007 Trolltech ASA. All rights reserved.
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**
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** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#include "flow.h"
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class SimpleFlowIterator :public <a href="qglayoutiterator.html">TQGLayoutIterator</a>
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{
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public:
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SimpleFlowIterator( <a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> *l ) :idx(0), list(l) {}
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uint count() const;
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<a href="qlayoutitem.html">TQLayoutItem</a> *current();
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<a href="qlayoutitem.html">TQLayoutItem</a> *next();
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<a href="qlayoutitem.html">TQLayoutItem</a> *takeCurrent();
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private:
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int idx;
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<a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> *list;
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};
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uint <a name="f452"></a>SimpleFlowIterator::count() const
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{
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<a name="x1479"></a> return list-><a href="tqptrlist.html#count">count</a>();
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}
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<a name="x1464"></a>TQLayoutItem *SimpleFlowIterator::<a href="qglayoutiterator.html#current">current</a>()
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{
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<a name="x1478"></a> return idx < int(count()) ? list-><a href="tqptrlist.html#at">at</a>(idx) : 0;
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}
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<a name="x1465"></a>TQLayoutItem *SimpleFlowIterator::<a href="qglayoutiterator.html#next">next</a>()
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{
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idx++; return current();
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}
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<a name="x1466"></a>TQLayoutItem *SimpleFlowIterator::<a href="qglayoutiterator.html#takeCurrent">takeCurrent</a>()
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{
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<a name="x1480"></a> return idx < int(count()) ? list-><a href="tqptrlist.html#take">take</a>( idx ) : 0;
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}
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SimpleFlow::~SimpleFlow()
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{
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<a href="ntqlayout.html#deleteAllItems">deleteAllItems</a>();
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}
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<a name="x1473"></a>int SimpleFlow::<a href="qlayoutitem.html#heightForWidth">heightForWidth</a>( int w ) const
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{
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if ( cached_width != w ) {
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//Not all C++ compilers support "mutable" yet:
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SimpleFlow * mthis = (SimpleFlow*)this;
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int h = mthis->doLayout( TQRect(0,0,w,0), TRUE );
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mthis->cached_hfw = h;
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mthis->cached_width = w;
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return h;
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}
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return cached_hfw;
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}
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<a name="x1467"></a>void SimpleFlow::<a href="ntqlayout.html#addItem">addItem</a>( <a href="qlayoutitem.html">TQLayoutItem</a> *item)
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{
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<a name="x1477"></a> list.<a href="tqptrlist.html#append">append</a>( item );
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}
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<a name="x1472"></a>bool SimpleFlow::<a href="qlayoutitem.html#hasHeightForWidth">hasHeightForWidth</a>() const
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{
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return TRUE;
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}
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<a name="x1476"></a>TQSize SimpleFlow::<a href="qlayoutitem.html#sizeHint">sizeHint</a>() const
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{
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return minimumSize();
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}
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<a name="x1468"></a>TQSizePolicy::ExpandData SimpleFlow::<a href="ntqlayout.html#expanding">expanding</a>() const
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{
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return TQSizePolicy::NoDirection;
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}
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<a name="x1469"></a>TQLayoutIterator SimpleFlow::<a href="ntqlayout.html#iterator">iterator</a>()
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{
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return TQLayoutIterator( new SimpleFlowIterator( &list ) );
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}
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<a name="x1471"></a>void SimpleFlow::<a href="ntqlayout.html#setGeometry">setGeometry</a>( const <a href="ntqrect.html">TQRect</a> &r )
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{
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TQLayout::<a href="ntqlayout.html#setGeometry">setGeometry</a>( r );
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doLayout( r );
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}
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int <a name="f451"></a>SimpleFlow::doLayout( const <a href="ntqrect.html">TQRect</a> &r, bool testonly )
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{
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int x = r.<a href="ntqrect.html#x">x</a>();
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int y = r.<a href="ntqrect.html#y">y</a>();
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int h = 0; //height of this line so far.
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<a href="tqptrlistiterator.html">TQPtrListIterator</a><TQLayoutItem> it(list);
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<a href="qlayoutitem.html">TQLayoutItem</a> *o;
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<a name="x1481"></a> while ( (o=it.<a href="tqptrlistiterator.html#current">current</a>()) != 0 ) {
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++it;
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int nextX = x + o-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width() + spacing();
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<a name="x1482"></a> if ( nextX - spacing() > r.<a href="ntqrect.html#right">right</a>() && h > 0 ) {
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x = r.<a href="ntqrect.html#x">x</a>();
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y = y + h + spacing();
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nextX = x + o-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width() + spacing();
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h = 0;
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}
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if ( !testonly )
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<a name="x1475"></a> o-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( TQPoint( x, y ), o-><a href="qlayoutitem.html#sizeHint">sizeHint</a>() ) );
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x = nextX;
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h = TQMAX( h, o-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().height() );
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}
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return y + h - r.<a href="ntqrect.html#y">y</a>();
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}
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<a name="x1470"></a>TQSize SimpleFlow::<a href="ntqlayout.html#minimumSize">minimumSize</a>() const
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{
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<a href="ntqsize.html">TQSize</a> s(0,0);
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<a href="tqptrlistiterator.html">TQPtrListIterator</a><TQLayoutItem> it(list);
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<a href="qlayoutitem.html">TQLayoutItem</a> *o;
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while ( (o=it.<a href="tqptrlistiterator.html#current">current</a>()) != 0 ) {
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++it;
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<a name="x1485"></a><a name="x1474"></a> s = s.<a href="ntqsize.html#expandedTo">expandedTo</a>( o-><a href="qlayoutitem.html#minimumSize">minimumSize</a>() );
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}
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return s;
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}
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</pre>
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<p> <hr>
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<p> Header file of the border layout:
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<p> <pre>/****************************************************************************
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** $Id: qt/border.h 3.3.8 edited Jan 11 14:46 $
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**
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** Definition of simple flow layout for custom layout example
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**
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|
** Created : 979899
|
|
**
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** Copyright (C) 1997-2007 Trolltech ASA. All rights reserved.
|
|
**
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|
** This file is part of an example program for TQt. This example
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** program may be used, distributed and modified without limitation.
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**
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*****************************************************************************/
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#ifndef BORDER_H
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#define BORDER_H
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#include <<a href="qlayout-h.html">ntqlayout.h</a>>
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#include <<a href="tqptrlist-h.html">tqptrlist.h</a>>
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class BorderWidgetItem : public <a href="tqwidgetitem.html">TQWidgetItem</a>
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{
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public:
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BorderWidgetItem( <a href="tqwidget.html">TQWidget</a> *w )
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: <a href="tqwidgetitem.html">TQWidgetItem</a>( w )
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{}
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void setGeometry( const <a href="ntqrect.html">TQRect</a> &r )
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{ widget()->setGeometry( r ); }
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};
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class BorderLayout : public <a href="ntqlayout.html">TQLayout</a>
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{
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public:
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enum Position {
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West = 0,
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North,
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South,
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East,
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Center
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};
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struct BorderLayoutStruct
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{
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BorderLayoutStruct( <a href="qlayoutitem.html">TQLayoutItem</a> *i, Position p ) {
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item = i;
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pos = p;
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}
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<a href="qlayoutitem.html">TQLayoutItem</a> *item;
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Position pos;
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};
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enum SizeType {
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Minimum = 0,
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SizeHint
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};
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BorderLayout( <a href="tqwidget.html">TQWidget</a> *parent, int border = 0, int autoBorder = -1,
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const char *name = 0 )
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: <a href="ntqlayout.html">TQLayout</a>( parent, border, autoBorder, name ), cached( 0, 0 ), mcached( 0, 0 ),
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sizeDirty( TRUE ), msizeDirty( TRUE )
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{}
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BorderLayout( <a href="ntqlayout.html">TQLayout</a>* parent, int autoBorder = -1, const char *name = 0 )
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: <a href="ntqlayout.html">TQLayout</a>( parent, autoBorder, name ), cached( 0, 0 ), mcached( 0, 0 ),
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sizeDirty( TRUE ), msizeDirty( TRUE )
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{}
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BorderLayout( int autoBorder = -1, const char *name = 0 )
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: <a href="ntqlayout.html">TQLayout</a>( autoBorder, name ), cached( 0, 0 ), mcached( 0, 0 ),
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sizeDirty( TRUE ), msizeDirty( TRUE )
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{}
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~BorderLayout();
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void addItem( <a href="qlayoutitem.html">TQLayoutItem</a> *item );
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void addWidget( <a href="tqwidget.html">TQWidget</a> *widget, Position pos );
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void add( <a href="qlayoutitem.html">TQLayoutItem</a> *item, Position pos );
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bool hasHeightForWidth() const;
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<a href="ntqsize.html">TQSize</a> sizeHint() const;
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<a href="ntqsize.html">TQSize</a> minimumSize() const;
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<a href="qlayoutiterator.html">TQLayoutIterator</a> iterator();
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TQSizePolicy::ExpandData expanding() const;
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protected:
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void setGeometry( const <a href="ntqrect.html">TQRect</a> &rect );
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private:
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void doLayout( const <a href="ntqrect.html">TQRect</a> &rect, bool testonly = FALSE );
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void calcSize( SizeType st );
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<a href="tqptrlist.html">TQPtrList</a><BorderLayoutStruct> list;
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<a href="ntqsize.html">TQSize</a> cached, mcached;
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bool sizeDirty, msizeDirty;
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};
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#endif
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</pre>
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<p> <hr>
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<p> Implementation of the border layout:
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<p> <pre>/****************************************************************************
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** $Id: qt/border.cpp 3.3.8 edited Jan 11 14:46 $
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|
**
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** Implementing your own layout: flow example
|
|
**
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|
** Copyright (C) 1996-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
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**
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*****************************************************************************/
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#include "border.h"
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class BorderLayoutIterator : public <a href="qglayoutiterator.html">TQGLayoutIterator</a>
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{
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public:
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BorderLayoutIterator( const <a href="tqptrlist.html">TQPtrList</a><BorderLayout::BorderLayoutStruct> *l )
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: idx( 0 ) , list( (TQPtrList<BorderLayout::BorderLayoutStruct>*)l )
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{}
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uint count() const;
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<a href="qlayoutitem.html">TQLayoutItem</a> *current();
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BorderLayout::BorderLayoutStruct *currentStruct();
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void toFirst();
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<a href="qlayoutitem.html">TQLayoutItem</a> *next();
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<a href="qlayoutitem.html">TQLayoutItem</a> *takeCurrent();
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BorderLayoutIterator &operator++();
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private:
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int idx;
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<a href="tqptrlist.html">TQPtrList</a><BorderLayout::BorderLayoutStruct> *list;
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};
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uint <a name="f456"></a>BorderLayoutIterator::count() const
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{
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<a name="x1502"></a> return list-><a href="tqptrlist.html#count">count</a>();
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}
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<a name="x1486"></a>TQLayoutItem *BorderLayoutIterator::<a href="qglayoutiterator.html#current">current</a>()
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{
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<a name="x1501"></a> return idx < (int)count() ? list-><a href="tqptrlist.html#at">at</a>( idx )->item : 0;
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}
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BorderLayout::BorderLayoutStruct *<a name="f457"></a>BorderLayoutIterator::currentStruct()
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{
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return idx < (int)count() ? list-><a href="tqptrlist.html#at">at</a>( idx ) : 0;
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}
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void <a name="f458"></a>BorderLayoutIterator::toFirst()
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{
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idx = 0;
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}
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<a name="x1487"></a>TQLayoutItem *BorderLayoutIterator::<a href="qglayoutiterator.html#next">next</a>()
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{
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idx++;
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return current();
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}
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<a name="x1488"></a>TQLayoutItem *BorderLayoutIterator::<a href="qglayoutiterator.html#takeCurrent">takeCurrent</a>()
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{
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BorderLayout::BorderLayoutStruct *b
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<a name="x1503"></a> = idx < int( list-><a href="tqptrlist.html#count">count</a>() ) ? list-><a href="tqptrlist.html#take">take</a>( idx ) : 0;
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<a href="qlayoutitem.html">TQLayoutItem</a> *item = b ? b->item : 0;
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delete b;
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return item;
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}
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BorderLayoutIterator &BorderLayoutIterator::operator++()
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{
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next();
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return *this;
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}
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BorderLayout::~BorderLayout()
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{
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<a href="ntqlayout.html#deleteAllItems">deleteAllItems</a>();
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}
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<a name="x1490"></a>void BorderLayout::<a href="ntqlayout.html#addItem">addItem</a>( <a href="qlayoutitem.html">TQLayoutItem</a> *item )
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{
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<a href="ntqlayout.html#add">add</a>( item, West );
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}
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void <a name="f453"></a>BorderLayout::addWidget( <a href="tqwidget.html">TQWidget</a> *widget, Position pos )
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{
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<a href="ntqlayout.html#add">add</a>( new BorderWidgetItem( widget ), pos );
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}
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<a name="x1489"></a>void BorderLayout::<a href="ntqlayout.html#add">add</a>( <a href="qlayoutitem.html">TQLayoutItem</a> *item, Position pos )
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{
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<a name="x1500"></a> list.<a href="tqptrlist.html#append">append</a>( new BorderLayoutStruct( item, pos ) );
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sizeDirty = TRUE; msizeDirty = TRUE;
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calcSize( SizeHint ); calcSize( Minimum );
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}
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|
|
<a name="x1496"></a>bool BorderLayout::<a href="qlayoutitem.html#hasHeightForWidth">hasHeightForWidth</a>() const
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
<a name="x1499"></a>TQSize BorderLayout::<a href="qlayoutitem.html#sizeHint">sizeHint</a>() const
|
|
{
|
|
return cached;
|
|
}
|
|
|
|
<a name="x1493"></a>TQSize BorderLayout::<a href="ntqlayout.html#minimumSize">minimumSize</a>() const
|
|
{
|
|
return cached;
|
|
}
|
|
|
|
<a name="x1491"></a>TQSizePolicy::ExpandData BorderLayout::<a href="ntqlayout.html#expanding">expanding</a>() const
|
|
|
|
{
|
|
return TQSizePolicy::BothDirections;
|
|
}
|
|
|
|
<a name="x1492"></a>TQLayoutIterator BorderLayout::<a href="ntqlayout.html#iterator">iterator</a>()
|
|
{
|
|
return TQLayoutIterator( new BorderLayoutIterator( &list ) );
|
|
}
|
|
|
|
<a name="x1494"></a>void BorderLayout::<a href="ntqlayout.html#setGeometry">setGeometry</a>( const <a href="ntqrect.html">TQRect</a> &rct )
|
|
{
|
|
TQLayout::<a href="ntqlayout.html#setGeometry">setGeometry</a>( rct );
|
|
doLayout( rct );
|
|
}
|
|
|
|
void <a name="f454"></a>BorderLayout::doLayout( const <a href="ntqrect.html">TQRect</a> &rct, bool /*testonly*/ )
|
|
{
|
|
int ew = 0, ww = 0, nh = 0, sh = 0;
|
|
int h = 0;
|
|
|
|
BorderLayoutIterator it( &list );
|
|
BorderLayoutStruct *o;
|
|
BorderLayoutStruct *center = 0;
|
|
while ( ( o = it.currentStruct() ) != 0 ) {
|
|
++it;
|
|
|
|
if ( o->pos == North ) {
|
|
<a name="x1506"></a><a name="x1505"></a><a name="x1498"></a> o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( rct.<a href="ntqrect.html#x">x</a>(), nh, rct.<a href="ntqrect.html#width">width</a>(), o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().height() ) );
|
|
<a name="x1495"></a> nh += o->item-><a href="qlayoutitem.html#geometry">geometry</a>().height() + spacing();
|
|
}
|
|
if ( o->pos == South ) {
|
|
o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( o->item-><a href="qlayoutitem.html#geometry">geometry</a>().x(), o->item-><a href="qlayoutitem.html#geometry">geometry</a>().y(),
|
|
rct.<a href="ntqrect.html#width">width</a>(), o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().height() ) );
|
|
sh += o->item-><a href="qlayoutitem.html#geometry">geometry</a>().height() + spacing();
|
|
o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( rct.<a href="ntqrect.html#x">x</a>(), rct.<a href="ntqrect.html#y">y</a>() + rct.<a href="ntqrect.html#height">height</a>() - sh + spacing(),
|
|
o->item-><a href="qlayoutitem.html#geometry">geometry</a>().width(), o->item-><a href="qlayoutitem.html#geometry">geometry</a>().height() ) );
|
|
}
|
|
if ( o->pos == Center )
|
|
center = o;
|
|
}
|
|
|
|
h = rct.<a href="ntqrect.html#height">height</a>() - nh - sh;
|
|
|
|
it.toFirst();
|
|
while ( ( o = it.currentStruct() ) != 0 ) {
|
|
++it;
|
|
|
|
if ( o->pos == West ) {
|
|
o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( rct.<a href="ntqrect.html#x">x</a>() + ww, nh, o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width(), h ) );
|
|
ww += o->item-><a href="qlayoutitem.html#geometry">geometry</a>().width() + spacing();
|
|
}
|
|
if ( o->pos == East ) {
|
|
o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( o->item-><a href="qlayoutitem.html#geometry">geometry</a>().x(), o->item-><a href="qlayoutitem.html#geometry">geometry</a>().y(),
|
|
o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width(), h ) );
|
|
ew += o->item-><a href="qlayoutitem.html#geometry">geometry</a>().width() + spacing();
|
|
o->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( rct.<a href="ntqrect.html#x">x</a>() + rct.<a href="ntqrect.html#width">width</a>() - ew + spacing(), nh,
|
|
o->item-><a href="qlayoutitem.html#geometry">geometry</a>().width(), o->item-><a href="qlayoutitem.html#geometry">geometry</a>().height() ) );
|
|
}
|
|
}
|
|
|
|
if ( center )
|
|
center->item-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( TQRect( ww, nh, rct.<a href="ntqrect.html#width">width</a>() - ew - ww, h ) );
|
|
}
|
|
|
|
void <a name="f455"></a>BorderLayout::calcSize( SizeType st )
|
|
{
|
|
if ( ( st == Minimum && !msizeDirty ) ||
|
|
( st == SizeHint && !sizeDirty ) )
|
|
return;
|
|
|
|
int w = 0, h = 0;
|
|
|
|
BorderLayoutIterator it( &list );
|
|
BorderLayoutStruct *o;
|
|
while ( ( o = it.currentStruct() ) != 0 ) {
|
|
++it;
|
|
if ( o->pos == North ||
|
|
o->pos == South ) {
|
|
if ( st == Minimum )
|
|
<a name="x1497"></a> h += o->item-><a href="qlayoutitem.html#minimumSize">minimumSize</a>().height();
|
|
else
|
|
h += o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().height();
|
|
}
|
|
else if ( o->pos == West ||
|
|
o->pos == East ) {
|
|
if ( st == Minimum )
|
|
w += o->item-><a href="qlayoutitem.html#minimumSize">minimumSize</a>().width();
|
|
else
|
|
w += o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width();
|
|
} else {
|
|
if ( st == Minimum ) {
|
|
h += o->item-><a href="qlayoutitem.html#minimumSize">minimumSize</a>().height();
|
|
w += o->item-><a href="qlayoutitem.html#minimumSize">minimumSize</a>().width();
|
|
}
|
|
else {
|
|
h += o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().height();
|
|
w += o->item-><a href="qlayoutitem.html#sizeHint">sizeHint</a>().width();
|
|
}
|
|
}
|
|
}
|
|
|
|
if ( st == Minimum ) {
|
|
msizeDirty = FALSE;
|
|
mcached = TQSize( w, h );
|
|
} else {
|
|
sizeDirty = FALSE;
|
|
cached = TQSize( w, h );
|
|
}
|
|
|
|
return;
|
|
}
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Header file of the card layout:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/card.h 3.3.8 edited Jan 11 14:46 $
|
|
**
|
|
** Definition of simple flow layout for custom layout example
|
|
**
|
|
** Created : 979899
|
|
**
|
|
** Copyright (C) 1997-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#ifndef CARD_H
|
|
#define CARD_H
|
|
|
|
#include <<a href="qlayout-h.html">ntqlayout.h</a>>
|
|
#include <<a href="tqptrlist-h.html">tqptrlist.h</a>>
|
|
|
|
class CardLayout : public <a href="ntqlayout.html">TQLayout</a>
|
|
{
|
|
public:
|
|
CardLayout( <a href="tqwidget.html">TQWidget</a> *parent, int dist )
|
|
: <a href="ntqlayout.html">TQLayout</a>( parent, 0, dist ) {}
|
|
CardLayout( <a href="ntqlayout.html">TQLayout</a>* parent, int dist)
|
|
: <a href="ntqlayout.html">TQLayout</a>( parent, dist ) {}
|
|
CardLayout( int dist )
|
|
: <a href="ntqlayout.html">TQLayout</a>( dist ) {}
|
|
~CardLayout();
|
|
|
|
void addItem( <a href="qlayoutitem.html">TQLayoutItem</a> *item );
|
|
<a href="ntqsize.html">TQSize</a> sizeHint() const;
|
|
<a href="ntqsize.html">TQSize</a> minimumSize() const;
|
|
<a href="qlayoutiterator.html">TQLayoutIterator</a> iterator();
|
|
void setGeometry( const <a href="ntqrect.html">TQRect</a> &rect );
|
|
|
|
private:
|
|
<a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> list;
|
|
|
|
};
|
|
|
|
#endif
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Implementation of the card layout:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/card.cpp 3.3.8 edited Jan 11 14:46 $
|
|
**
|
|
** Implementing your own layout: flow example
|
|
**
|
|
** Copyright (C) 1996-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include "card.h"
|
|
|
|
class CardLayoutIterator :public <a href="qglayoutiterator.html">TQGLayoutIterator</a>
|
|
{
|
|
public:
|
|
CardLayoutIterator( <a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> *l )
|
|
: idx( 0 ), list( l ) {}
|
|
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *current();
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *next();
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *takeCurrent();
|
|
|
|
private:
|
|
int idx;
|
|
<a href="tqptrlist.html">TQPtrList</a><TQLayoutItem> *list;
|
|
};
|
|
|
|
<a name="x1508"></a>TQLayoutItem *CardLayoutIterator::<a href="qglayoutiterator.html#current">current</a>()
|
|
{
|
|
<a name="x1520"></a><a name="x1519"></a> return idx < int( list-><a href="tqptrlist.html#count">count</a>() ) ? list-><a href="tqptrlist.html#at">at</a>( idx ) : 0;
|
|
}
|
|
|
|
<a name="x1509"></a>TQLayoutItem *CardLayoutIterator::<a href="qglayoutiterator.html#next">next</a>()
|
|
{
|
|
idx++; return current();
|
|
}
|
|
|
|
<a name="x1510"></a>TQLayoutItem *CardLayoutIterator::<a href="qglayoutiterator.html#takeCurrent">takeCurrent</a>()
|
|
{
|
|
<a name="x1521"></a> return idx < int( list-><a href="tqptrlist.html#count">count</a>() ) ?list-><a href="tqptrlist.html#take">take</a>( idx ) : 0;
|
|
}
|
|
|
|
|
|
|
|
<a name="x1512"></a>TQLayoutIterator CardLayout::<a href="ntqlayout.html#iterator">iterator</a>()
|
|
{
|
|
return TQLayoutIterator( new CardLayoutIterator( &list ) );
|
|
}
|
|
|
|
CardLayout::~CardLayout()
|
|
{
|
|
<a href="ntqlayout.html#deleteAllItems">deleteAllItems</a>();
|
|
}
|
|
|
|
<a name="x1511"></a>void CardLayout::<a href="ntqlayout.html#addItem">addItem</a>( <a href="qlayoutitem.html">TQLayoutItem</a> *item )
|
|
{
|
|
<a name="x1518"></a> list.<a href="tqptrlist.html#append">append</a>( item );
|
|
}
|
|
|
|
<a name="x1514"></a>void CardLayout::<a href="ntqlayout.html#setGeometry">setGeometry</a>( const <a href="ntqrect.html">TQRect</a> &rct )
|
|
{
|
|
TQLayout::<a href="ntqlayout.html#setGeometry">setGeometry</a>( rct );
|
|
|
|
<a href="tqptrlistiterator.html">TQPtrListIterator</a><TQLayoutItem> it( list );
|
|
<a name="x1522"></a> if ( it.<a href="tqptrlistiterator.html#count">count</a>() == 0 )
|
|
return;
|
|
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *o;
|
|
|
|
int i = 0;
|
|
|
|
int w = rct.<a href="ntqrect.html#width">width</a>() - ( list.<a href="tqptrlist.html#count">count</a>() - 1 ) * spacing();
|
|
int h = rct.<a href="ntqrect.html#height">height</a>() - ( list.<a href="tqptrlist.html#count">count</a>() - 1 ) * spacing();
|
|
|
|
<a name="x1523"></a> while ( ( o=it.<a href="tqptrlistiterator.html#current">current</a>() ) != 0 ) {
|
|
++it;
|
|
<a href="ntqrect.html">TQRect</a> geom( rct.<a href="ntqrect.html#x">x</a>() + i * spacing(), rct.<a href="ntqrect.html#y">y</a>() + i * spacing(),
|
|
w, h );
|
|
<a name="x1516"></a> o-><a href="qlayoutitem.html#setGeometry">setGeometry</a>( geom );
|
|
++i;
|
|
}
|
|
}
|
|
|
|
<a name="x1517"></a>TQSize CardLayout::<a href="qlayoutitem.html#sizeHint">sizeHint</a>() const
|
|
{
|
|
<a href="ntqsize.html">TQSize</a> s(0,0);
|
|
int n = list.<a href="tqptrlist.html#count">count</a>();
|
|
if ( n > 0 )
|
|
s = TQSize(100,70); //start with a nice default size
|
|
<a href="tqptrlistiterator.html">TQPtrListIterator</a><TQLayoutItem> it(list);
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *o;
|
|
while ( (o=it.<a href="tqptrlistiterator.html#current">current</a>()) != 0 ) {
|
|
++it;
|
|
<a name="x1528"></a><a name="x1515"></a> s = s.<a href="ntqsize.html#expandedTo">expandedTo</a>( o-><a href="qlayoutitem.html#minimumSize">minimumSize</a>() );
|
|
}
|
|
return s + n*TQSize(<a href="ntqlayout.html#spacing">spacing</a>(),spacing());
|
|
}
|
|
|
|
<a name="x1513"></a>TQSize CardLayout::<a href="ntqlayout.html#minimumSize">minimumSize</a>() const
|
|
{
|
|
<a href="ntqsize.html">TQSize</a> s(0,0);
|
|
int n = list.<a href="tqptrlist.html#count">count</a>();
|
|
<a href="tqptrlistiterator.html">TQPtrListIterator</a><TQLayoutItem> it(list);
|
|
<a href="qlayoutitem.html">TQLayoutItem</a> *o;
|
|
while ( (o=it.<a href="tqptrlistiterator.html#current">current</a>()) != 0 ) {
|
|
++it;
|
|
s = s.<a href="ntqsize.html#expandedTo">expandedTo</a>( o-><a href="qlayoutitem.html#minimumSize">minimumSize</a>() );
|
|
}
|
|
return s + n*TQSize(<a href="ntqlayout.html#spacing">spacing</a>(),spacing());
|
|
}
|
|
</pre>
|
|
|
|
<p> <hr>
|
|
<p> Main:
|
|
<p> <pre>/****************************************************************************
|
|
** $Id: qt/main.cpp 3.3.8 edited Jan 11 14:46 $
|
|
**
|
|
** Main for custom layout example
|
|
**
|
|
** Copyright (C) 1996-2007 Trolltech ASA. All rights reserved.
|
|
**
|
|
** This file is part of an example program for TQt. This example
|
|
** program may be used, distributed and modified without limitation.
|
|
**
|
|
*****************************************************************************/
|
|
|
|
#include "flow.h"
|
|
#include "border.h"
|
|
#include "card.h"
|
|
|
|
#include <<a href="qapplication-h.html">ntqapplication.h</a>>
|
|
#include <<a href="qlabel-h.html">ntqlabel.h</a>>
|
|
#include <<a href="qcolor-h.html">ntqcolor.h</a>>
|
|
#include <<a href="qgroupbox-h.html">ntqgroupbox.h</a>>
|
|
#include <<a href="qpushbutton-h.html">ntqpushbutton.h</a>>
|
|
#include <<a href="qmultilineedit-h.html">ntqmultilineedit.h</a>>
|
|
#include <<a href="qcolor-h.html">ntqcolor.h</a>>
|
|
|
|
int main( int argc, char **argv )
|
|
{
|
|
<a href="ntqapplication.html">TQApplication</a> a( argc, argv );
|
|
|
|
<a href="tqwidget.html">TQWidget</a> *f = new <a href="tqwidget.html">TQWidget</a>;
|
|
<a href="qboxlayout.html">TQBoxLayout</a> *gm = new <a href="qvboxlayout.html">TQVBoxLayout</a>( f, 5 );
|
|
|
|
SimpleFlow *b1 = new SimpleFlow( gm );
|
|
|
|
<a name="x1536"></a> b1-><a href="ntqlayout.html#add">add</a>( new <a href="ntqpushbutton.html">TQPushButton</a>( "Short", f ) );
|
|
b1-><a href="ntqlayout.html#add">add</a>( new <a href="ntqpushbutton.html">TQPushButton</a>( "Longer", f ) );
|
|
b1-><a href="ntqlayout.html#add">add</a>( new <a href="ntqpushbutton.html">TQPushButton</a>( "Different text", f ) );
|
|
b1-><a href="ntqlayout.html#add">add</a>( new <a href="ntqpushbutton.html">TQPushButton</a>( "More text", f ) );
|
|
b1-><a href="ntqlayout.html#add">add</a>( new <a href="ntqpushbutton.html">TQPushButton</a>( "Even longer button text", f ) );
|
|
<a href="ntqpushbutton.html">TQPushButton</a>* qb = new <a href="ntqpushbutton.html">TQPushButton</a>( "Quit", f );
|
|
a.<a href="tqobject.html#connect">connect</a>( qb, TQ_SIGNAL( <a href="ntqbutton.html#clicked">clicked</a>() ), TQ_SLOT( quit() ) );
|
|
b1-><a href="ntqlayout.html#add">add</a>( qb );
|
|
|
|
<a href="tqwidget.html">TQWidget</a> *wid = new <a href="tqwidget.html">TQWidget</a>( f );
|
|
|
|
BorderLayout *large = new BorderLayout( wid );
|
|
<a name="x1537"></a> large-><a href="ntqlayout.html#setSpacing">setSpacing</a>( 5 );
|
|
large->addWidget( new <a href="ntqpushbutton.html">TQPushButton</a>( "North", wid ), BorderLayout::North );
|
|
large->addWidget( new <a href="ntqpushbutton.html">TQPushButton</a>( "West", wid ), BorderLayout::West );
|
|
<a href="ntqmultilineedit.html">TQMultiLineEdit</a>* m = new <a href="ntqmultilineedit.html">TQMultiLineEdit</a>( wid );
|
|
m-><a href="ntqtextedit.html#setText">setText</a>( "Central\nWidget" );
|
|
large->addWidget( m, BorderLayout::Center );
|
|
<a href="tqwidget.html">TQWidget</a> *east1 = new <a href="ntqpushbutton.html">TQPushButton</a>( "East", wid );
|
|
large->addWidget( east1, BorderLayout::East );
|
|
<a href="tqwidget.html">TQWidget</a> *east2 = new <a href="ntqpushbutton.html">TQPushButton</a>( "East 2", wid );
|
|
large->addWidget( east2 , BorderLayout::East );
|
|
large->addWidget( new <a href="ntqpushbutton.html">TQPushButton</a>( "South", wid ), BorderLayout::South );
|
|
//Left-to-right tab order looks better:
|
|
<a name="x1542"></a> <a href="tqwidget.html">TQWidget</a>::<a href="tqwidget.html#setTabOrder">setTabOrder</a>( east2, east1 );
|
|
gm-><a href="qboxlayout.html#addWidget">addWidget</a>( wid );
|
|
|
|
|
|
wid = new <a href="tqwidget.html">TQWidget</a>( f );
|
|
CardLayout *card = new CardLayout( wid, 10 );
|
|
|
|
<a href="tqwidget.html">TQWidget</a> *crd = new <a href="tqwidget.html">TQWidget</a>( wid );
|
|
<a name="x1540"></a> crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::red );
|
|
card-><a href="ntqlayout.html#add">add</a>( crd );
|
|
crd = new <a href="tqwidget.html">TQWidget</a>( wid );
|
|
crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::green );
|
|
card-><a href="ntqlayout.html#add">add</a>( crd );
|
|
crd = new <a href="tqwidget.html">TQWidget</a>( wid );
|
|
crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::blue );
|
|
card-><a href="ntqlayout.html#add">add</a>( crd );
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crd = new <a href="tqwidget.html">TQWidget</a>( wid );
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crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::white );
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card-><a href="ntqlayout.html#add">add</a>( crd );
|
|
crd = new <a href="tqwidget.html">TQWidget</a>( wid );
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|
crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::black );
|
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card-><a href="ntqlayout.html#add">add</a>( crd );
|
|
crd = new <a href="tqwidget.html">TQWidget</a>( wid );
|
|
crd-><a href="tqwidget.html#setBackgroundColor">setBackgroundColor</a>( TQt::yellow );
|
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card-><a href="ntqlayout.html#add">add</a>( crd );
|
|
|
|
gm-><a href="qboxlayout.html#addWidget">addWidget</a>( wid );
|
|
|
|
<a href="ntqlabel.html">TQLabel</a>* s = new <a href="ntqlabel.html">TQLabel</a>( f );
|
|
s-><a href="ntqlabel.html#setText">setText</a>( "outermost box" );
|
|
s-><a href="ntqframe.html#setFrameStyle">setFrameStyle</a>( TQFrame::Panel | TQFrame::Sunken );
|
|
s-><a href="ntqlabel.html#setAlignment">setAlignment</a>( TQt::AlignVCenter | TQt::AlignHCenter );
|
|
gm-><a href="qboxlayout.html#addWidget">addWidget</a>( s );
|
|
a.<a href="ntqapplication.html#setMainWidget">setMainWidget</a>( f );
|
|
f-><a href="tqwidget.html#setCaption">setCaption</a>("TQt Example - Custom Layout");
|
|
f-><a href="tqwidget.html#show">show</a>();
|
|
|
|
int result = a.<a href="ntqapplication.html#exec">exec</a>();
|
|
delete f;
|
|
return result;
|
|
}
|
|
</pre>
|
|
|
|
<p>See also <a href="examples.html">Examples</a>.
|
|
|
|
<!-- eof -->
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<p><address><hr><div align=center>
|
|
<table width=100% cellspacing=0 border=0><tr>
|
|
<td>Copyright © 2007
|
|
<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
|
|
<td align=right><div align=right>TQt 3.3.8</div>
|
|
</table></div></address></body>
|
|
</html>
|