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Last change
on this file since 138 was 2, checked in by dmik, 20 years ago |
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Imported xplatform parts of the official release 3.3.1 from Trolltech
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-
Property svn:keywords
set to
Id
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File size:
955 bytes
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| 1 | /****************************************************************
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| 2 | **
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| 3 | ** Implementation CannonField class, Qt tutorial 8
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| 4 | **
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| 5 | ****************************************************************/
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| 6 |
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| 7 | #include "cannon.h"
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| 8 | #include <qpainter.h>
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| 9 |
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| 10 |
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| 11 | CannonField::CannonField( QWidget *parent, const char *name )
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| 12 | : QWidget( parent, name )
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| 13 | {
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| 14 | ang = 45;
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| 15 | setPalette( QPalette( QColor( 250, 250, 200) ) );
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| 16 | }
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| 17 |
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| 18 |
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| 19 | void CannonField::setAngle( int degrees )
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| 20 | {
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| 21 | if ( degrees < 5 )
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| 22 | degrees = 5;
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| 23 | if ( degrees > 70 )
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| 24 | degrees = 70;
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| 25 | if ( ang == degrees )
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| 26 | return;
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| 27 | ang = degrees;
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| 28 | repaint();
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| 29 | emit angleChanged( ang );
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| 30 | }
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| 31 |
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| 32 |
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| 33 | void CannonField::paintEvent( QPaintEvent * )
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| 34 | {
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| 35 | QString s = "Angle = " + QString::number( ang );
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| 36 | QPainter p( this );
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| 37 | p.drawText( 200, 200, s );
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| 38 | }
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| 39 |
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| 40 |
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| 41 | QSizePolicy CannonField::sizePolicy() const
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| 42 | {
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| 43 | return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
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| 44 | }
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| 45 |
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