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125 lines
2.7 KiB
C++
125 lines
2.7 KiB
C++
/****************************************************************************
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** $Id: qtgrid.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 "qtgrid.h"
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#include "qlayout.h"
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/*!
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\class QtGrid qgrid.h
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\brief The QtGrid widget performs geometry management on its children
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\ingroup geomanagement
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The number of rows or columns is defined in the constructor. All its
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children will be placed and sized according to their sizeHint()s.
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\sa QtVBox and QtHBox
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*/
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/*!
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Constructs a grid widget with parent \a parent and name \a name. If \a d is
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\c Horizontal, \a n specifies the number of columns. If \a d is \c Vertical,
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\a n specifies the number of rows.
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*/
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QtGrid::QtGrid( int n, Direction d, QWidget *parent, const char *name, WFlags f )
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:QWidget( parent, name, f )
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{
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if ( d == Horizontal ) {
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nCols = n;
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nRows = 1;
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} else {
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nCols = 1;
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nRows = n;
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}
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dir = d;
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lay = new QGridLayout( this, nRows, nCols, parent?0:5, 5, name ); //### border
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row = col = 0;
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}
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/*!
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Constructs a grid widget with parent \a parent and name \a name.
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\a n specifies the number of columns.
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*/
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QtGrid::QtGrid( int n, QWidget *parent, const char *name, WFlags f )
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:QWidget( parent, name, f )
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{
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nCols = n;
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nRows = 1;
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dir = Horizontal;
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lay = new QGridLayout( this, nRows, nCols, parent?0:5, 5, name ); //### border
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row = col = 0;
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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 QtGrid::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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if ( row >= nRows || col >= nCols )
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lay->expand( row+1, col+1 );
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lay->addWidget( w, row, col );
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// debug( "adding %d,%d", row, col );
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skip();
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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 QtGrid::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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return QWidget::event( e );
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}
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}
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/*!
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Skips a position in the grid, leaving it empty.
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*/
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void QtGrid::skip()
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{
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if ( dir == Horizontal ) {
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if ( col+1 < nCols ) {
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col++;
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} else {
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col = 0;
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row++;
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}
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} else { //Vertical
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if ( row+1 < nRows ) {
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row++;
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} else {
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row = 0;
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col++;
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}
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}
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}
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