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151 lines
3.0 KiB
C++
151 lines
3.0 KiB
C++
/****************************************************************************
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** $Id: qthbox.cpp,v 1.1 1998/09/25 18:01:39 ramiro%netscape.com Exp $
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**
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** Copyright (C) 1992-1998 Troll Tech AS. All rights reserved.
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**
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** This file is part of an example program for Qt. 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 "qthbox.h"
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#include "qlayout.h"
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#include "qapp.h"
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/*!
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\class QtHBox qhbox.h
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\brief The QtHBox widget performs geometry management on its children
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\ingroup geomanagement
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All its children will be placed beside each other and sized
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according to their sizeHint()s.
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\sa QtVBox and QtGrid
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*/
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/*!
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Constructs an hbox widget with parent \a parent and name \a name
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*/
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QtHBox::QtHBox( QWidget *parent, const char *name, WFlags f )
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:QWidget( parent, name, f )
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{
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packed = FALSE;
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lay = new QHBoxLayout( this, parent?0:5, 5, name ); //### border
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}
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/*!
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Constructs a horizontal hbox if \a horizontal is TRUE, otherwise
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constructs a vertical hbox (also known as a vbox).
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This constructor is provided for the QtVBox class. You should never need
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to use it directly.
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*/
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QtHBox::QtHBox( bool horizontal, QWidget *parent , const char *name, WFlags f )
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:QWidget( parent, name, f )
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{
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packed = FALSE;
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lay = new QBoxLayout( this,
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horizontal ? QBoxLayout::LeftToRight : QBoxLayout::Down,
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parent?0:5, 5, name ); //### border
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}
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/*!
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This function is called when the widget gets a new child or loses an old one.
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*/
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void QtHBox::childEvent( QChildEvent *c )
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{
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if ( !c->inserted() )
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return;
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QWidget *w = c->child();
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QSize sh = w->sizeHint();
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if ( !sh.isEmpty() )
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w->setMinimumSize( sh );
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lay->addWidget( w );
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if ( isVisible() )
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lay->activate();
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}
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/*!
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Provides childEvent() while waiting for Qt 2.0.
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*/
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bool QtHBox::event( QEvent *e ) {
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switch ( e->type() ) {
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case Event_ChildInserted:
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case Event_ChildRemoved:
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childEvent( (QChildEvent*)e );
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return TRUE;
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default:
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break;
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}
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bool result = QWidget::event( e );
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//### we have to do this after QGManager's event filter has done its job
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switch ( e->type() ) {
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case Event_ChildInserted:
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case Event_ChildRemoved:
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case Event_LayoutHint:
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doLayout();
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default:
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break;
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}
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return result;
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}
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/*!
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Adds infinitely stretchable space.
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*/
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void QtHBox::addStretch()
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{
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syncLayout();
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lay->addStretch( 1 );
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if ( isVisible() )
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lay->activate();
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}
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/*!
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Get all ChildInserted events that are queued up for me
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*/
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void QtHBox::syncLayout()
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{
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QApplication::sendPostedEvents( this, Event_ChildInserted );
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}
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/*!
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Resizes this widget to its minimum size and does not allow the user to
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resize it.
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*/
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void QtHBox::pack()
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{
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syncLayout();
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lay->activate();
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setFixedSize( minimumSize() );
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packed = TRUE;
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}
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/*!
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Handles frozen layouts. To be called after layout is just activated.
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*/
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void QtHBox::doLayout()
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{
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if ( packed )
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setFixedSize( minimumSize() );
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}
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