/**************************************************************************** ** ** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved. ** ** This file is part of Qt Jambi. ** ** ** This file may be used under the terms of the GNU General Public ** License version 2.0 as published by the Free Software Foundation ** and appearing in the file LICENSE.GPL included in the packaging of ** this file. Please review the following information to ensure GNU ** General Public Licensing requirements will be met: ** http://www.trolltech.com/products/qt/opensource.html ** ** If you are unsure which license is appropriate for your use, please ** review the following information: ** http://www.trolltech.com/products/qt/licensing.html or contact the ** sales department at sales@trolltech.com. ** ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. ** ****************************************************************************/ package com.trolltech.examples; import com.trolltech.qt.core.*; import com.trolltech.qt.gui.*; class WigglyWidget extends QWidget { static final int sineTable[] = { 0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100, -92, -71, -38 }; private QBasicTimer timer; private String text; private int step; WigglyWidget(QWidget parent) { super(parent); setBackgroundRole(QPalette.ColorRole.Midlight); QFont newFont = font(); newFont.setPointSize(newFont.pointSize() + 20); setFont(newFont); step = 0; timer = new QBasicTimer(); timer.start(60, this); } public void setText(String s) { text = s; } protected void paintEvent(QPaintEvent e) { QFontMetrics metrics = new QFontMetrics(font()); int x = (width() - metrics.width(text)) / 2; int y = (height() + metrics.ascent() - metrics.descent()) / 2; QColor color = new QColor(); QPainter painter = new QPainter(); painter.begin(this); for (int i = 0; i < text.length(); ++i) { int index = (step + i) % 16; color.setHsv((15 - index) * 16, 255, 191); painter.setPen(color); painter.drawText(x, y - ((sineTable[index] * metrics.height()) / 400), text.substring(i, i + 1)); x += metrics.width(text.substring(i, i + 1)); } painter.end(); } protected void timerEvent(QTimerEvent event) { if (event.timerId() == timer.timerId()) { ++step; update(); } else { super.timerEvent(event); } } } @QtJambiExample(name = "Wiggly") public class Wiggly extends QDialog { public Wiggly(QWidget parent) { super(parent); WigglyWidget wigglyWidget = new WigglyWidget(null); QLineEdit lineEdit = new QLineEdit(); QVBoxLayout layout = new QVBoxLayout(); layout.addWidget(wigglyWidget); layout.addWidget(lineEdit); setLayout(layout); lineEdit.textChanged.connect(wigglyWidget, "setText(String)"); lineEdit.setText("Hello world!"); setWindowTitle("Wiggly"); setWindowIcon(new QIcon("classpath:com/trolltech/images/qt-logo.png")); resize(360, 145); } public static void main(String args[]) { QApplication.initialize(args); Wiggly d = new Wiggly(null); d.show(); QApplication.exec(); } }