1 files changed, 162 insertions, 0 deletions
diff --git a/examples/ConcentricCircles.js b/examples/ConcentricCircles.js
new file mode 100644
index 0000000..bd0b9c9
--- /dev/null
+++ b/examples/ConcentricCircles.js
@@ -0,0 +1,162 @@
+/****************************************************************************
+**
+** Copyright (C) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the Qt Script Generator project on Qt Labs.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+function tr(s) { return s; }
+
+
+function CircleWidget(parent)
+{
+    QWidget.call(this, parent);
+
+    this.floatBased = false;
+    this.antialiased = false;
+    this.frameNo = 0;
+
+    this.setBackgroundRole(QPalette.Base);
+    this.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding);
+}
+
+CircleWidget.prototype = new QWidget();
+
+CircleWidget.prototype.setFloatBased = function(floatBased)
+{
+    this.floatBased = floatBased;
+    this.update();
+}
+
+CircleWidget.prototype.setAntialiased = function(antialiased)
+{
+    this.antialiased = antialiased;
+    this.update();
+}
+
+CircleWidget.prototype.getMinimumSizeHint = function()
+{
+    return new QSize(50, 50);
+}
+
+CircleWidget.prototype.getSizeHint = function()
+{
+    return new QSize(180, 180);
+}
+
+CircleWidget.prototype.nextAnimationFrame = function()
+{
+    ++this.frameNo;
+    this.update();
+}
+
+CircleWidget.prototype.paintEvent = function(/* event */)
+{
+    var painter = new QPainter();
+    painter.begin(this);
+    painter.setRenderHint(QPainter.Antialiasing, this.antialiased);
+    painter.translate(this.width / 2, this.height / 2);
+
+    for (var diameter = 0; diameter < 256; diameter += 9) {
+        var delta = Math.abs((this.frameNo % 128) - diameter / 2);
+        var alpha = 255 - (delta * delta) / 4 - diameter;
+        if (alpha > 0) {
+            painter.setPen(new QPen(new QColor(0, diameter / 2, 127, alpha), 3));
+
+            if (this.floatBased) {
+                painter.drawEllipse(new QRectF(-diameter / 2.0, -diameter / 2.0,
+                                               diameter, diameter));
+            } else {
+                painter.drawEllipse(new QRect(-diameter / 2, -diameter / 2,
+                                              diameter, diameter));
+            }
+        }
+    }
+
+    painter.end();
+}
+
+
+function Window(parent)
+{
+    QWidget.call(this, parent);
+
+    var aliasedLabel = this.createLabel(tr("Aliased"));
+    var antialiasedLabel = this.createLabel(tr("Antialiased"));
+    var intLabel = this.createLabel(tr("Int"));
+    var floatLabel = this.createLabel(tr("Float"));
+
+    var layout = new QGridLayout();
+    layout.addWidget(aliasedLabel, 0, 1);
+    layout.addWidget(antialiasedLabel, 0, 2);
+    layout.addWidget(intLabel, 1, 0);
+    layout.addWidget(floatLabel, 2, 0);
+
+    var timer = new QTimer(this);
+
+    for (var i = 0; i < 2; ++i) {
+        for (var j = 0; j < 2; ++j) {
+            var cw = new CircleWidget();
+            cw.setAntialiased(j != 0);
+            cw.setFloatBased(i != 0);
+
+            timer.timeout.connect(
+                    cw, cw.nextAnimationFrame);
+
+            layout.addWidget(cw, i + 1, j + 1);
+        }
+    }
+    timer.start(100);
+    this.setLayout(layout);
+
+    this.windowTitle = tr("Concentric Circles");
+}
+
+Window.prototype = new QWidget();
+
+Window.prototype.createLabel = function(text)
+{
+    var label = new QLabel(text);
+    label.alignment = Qt.AlignCenter;
+    label.margin = 2;
+    label.setFrameStyle(QFrame.Box | QFrame.Sunken);
+    return label;
+}
+
+var win = new Window();
+win.show();
+QCoreApplication.exec();