qt5base-lts/examples/opengl/2dpainting/widget.cpp
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

73 lines
2.6 KiB
C++

/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** This file is part of the examples of the Qt Toolkit.
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#include <QtGui>
#include "widget.h"
#include "helper.h"
//! [0]
Widget::Widget(Helper *helper, QWidget *parent)
: QWidget(parent), helper(helper)
{
elapsed = 0;
setFixedSize(200, 200);
}
//! [0]
//! [1]
void Widget::animate()
{
elapsed = (elapsed + qobject_cast<QTimer*>(sender())->interval()) % 1000;
repaint();
}
//! [1]
//! [2]
void Widget::paintEvent(QPaintEvent *event)
{
QPainter painter;
painter.begin(this);
painter.setRenderHint(QPainter::Antialiasing);
helper->paint(&painter, event, elapsed);
painter.end();
}
//! [2]