--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/animation/easing/window.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,177 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtCore module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "window.h"
+
+Window::Window(QWidget *parent)
+ : QWidget(parent), m_iconSize(64, 64)
+{
+ m_ui.setupUi(this);
+ QButtonGroup *buttonGroup = qFindChild<QButtonGroup *>(this); // ### workaround for uic in 4.4
+ m_ui.easingCurvePicker->setIconSize(m_iconSize);
+ m_ui.easingCurvePicker->setMinimumHeight(m_iconSize.height() + 50);
+ buttonGroup->setId(m_ui.lineRadio, 0);
+ buttonGroup->setId(m_ui.circleRadio, 1);
+
+ QEasingCurve dummy;
+ m_ui.periodSpinBox->setValue(dummy.period());
+ m_ui.amplitudeSpinBox->setValue(dummy.amplitude());
+ m_ui.overshootSpinBox->setValue(dummy.overshoot());
+
+ connect(m_ui.easingCurvePicker, SIGNAL(currentRowChanged(int)), this, SLOT(curveChanged(int)));
+ connect(buttonGroup, SIGNAL(buttonClicked(int)), this, SLOT(pathChanged(int)));
+ connect(m_ui.periodSpinBox, SIGNAL(valueChanged(double)), this, SLOT(periodChanged(double)));
+ connect(m_ui.amplitudeSpinBox, SIGNAL(valueChanged(double)), this, SLOT(amplitudeChanged(double)));
+ connect(m_ui.overshootSpinBox, SIGNAL(valueChanged(double)), this, SLOT(overshootChanged(double)));
+ createCurveIcons();
+
+ QPixmap pix(QLatin1String(":/images/qt-logo.png"));
+ m_item = new PixmapItem(pix);
+ m_scene.addItem(m_item);
+ m_ui.graphicsView->setScene(&m_scene);
+
+ m_anim = new Animation(m_item, "pos");
+ m_anim->setEasingCurve(QEasingCurve::OutBounce);
+ m_ui.easingCurvePicker->setCurrentRow(int(QEasingCurve::OutBounce));
+
+ startAnimation();
+}
+
+void Window::createCurveIcons()
+{
+ QPixmap pix(m_iconSize);
+ QPainter painter(&pix);
+ QLinearGradient gradient(0,0, 0, m_iconSize.height());
+ gradient.setColorAt(0.0, QColor(240, 240, 240));
+ gradient.setColorAt(1.0, QColor(224, 224, 224));
+ QBrush brush(gradient);
+ const QMetaObject &mo = QEasingCurve::staticMetaObject;
+ QMetaEnum metaEnum = mo.enumerator(mo.indexOfEnumerator("Type"));
+ // Skip QEasingCurve::Custom
+ for (int i = 0; i < QEasingCurve::NCurveTypes - 1; ++i) {
+ painter.fillRect(QRect(QPoint(0, 0), m_iconSize), brush);
+ QEasingCurve curve((QEasingCurve::Type)i);
+ painter.setPen(QColor(0, 0, 255, 64));
+ qreal xAxis = m_iconSize.height()/1.5;
+ qreal yAxis = m_iconSize.width()/3;
+ painter.drawLine(0, xAxis, m_iconSize.width(), xAxis);
+ painter.drawLine(yAxis, 0, yAxis, m_iconSize.height());
+
+ qreal curveScale = m_iconSize.height()/2;
+
+ painter.setPen(Qt::NoPen);
+
+ // start point
+ painter.setBrush(Qt::red);
+ QPoint start(yAxis, xAxis - curveScale * curve.valueForProgress(0));
+ painter.drawRect(start.x() - 1, start.y() - 1, 3, 3);
+
+ // end point
+ painter.setBrush(Qt::blue);
+ QPoint end(yAxis + curveScale, xAxis - curveScale * curve.valueForProgress(1));
+ painter.drawRect(end.x() - 1, end.y() - 1, 3, 3);
+
+ QPainterPath curvePath;
+ curvePath.moveTo(start);
+ for (qreal t = 0; t <= 1.0; t+=1.0/curveScale) {
+ QPoint to;
+ to.setX(yAxis + curveScale * t);
+ to.setY(xAxis - curveScale * curve.valueForProgress(t));
+ curvePath.lineTo(to);
+ }
+ painter.setRenderHint(QPainter::Antialiasing, true);
+ painter.strokePath(curvePath, QColor(32, 32, 32));
+ painter.setRenderHint(QPainter::Antialiasing, false);
+ QListWidgetItem *item = new QListWidgetItem;
+ item->setIcon(QIcon(pix));
+ item->setText(metaEnum.key(i));
+ m_ui.easingCurvePicker->addItem(item);
+ }
+}
+
+void Window::startAnimation()
+{
+ m_anim->setStartValue(QPointF(0, 0));
+ m_anim->setEndValue(QPointF(100, 100));
+ m_anim->setDuration(2000);
+ m_anim->setLoopCount(-1); // forever
+ m_anim->start();
+}
+
+void Window::curveChanged(int row)
+{
+ QEasingCurve::Type curveType = (QEasingCurve::Type)row;
+ m_anim->setEasingCurve(curveType);
+ m_anim->setCurrentTime(0);
+
+ bool isElastic = curveType >= QEasingCurve::InElastic && curveType <= QEasingCurve::OutInElastic;
+ bool isBounce = curveType >= QEasingCurve::InBounce && curveType <= QEasingCurve::OutInBounce;
+ m_ui.periodSpinBox->setEnabled(isElastic);
+ m_ui.amplitudeSpinBox->setEnabled(isElastic || isBounce);
+ m_ui.overshootSpinBox->setEnabled(curveType >= QEasingCurve::InBack && curveType <= QEasingCurve::OutInBack);
+}
+
+void Window::pathChanged(int index)
+{
+ m_anim->setPathType((Animation::PathType)index);
+}
+
+void Window::periodChanged(double value)
+{
+ QEasingCurve curve = m_anim->easingCurve();
+ curve.setPeriod(value);
+ m_anim->setEasingCurve(curve);
+}
+
+void Window::amplitudeChanged(double value)
+{
+ QEasingCurve curve = m_anim->easingCurve();
+ curve.setAmplitude(value);
+ m_anim->setEasingCurve(curve);
+}
+
+void Window::overshootChanged(double value)
+{
+ QEasingCurve curve = m_anim->easingCurve();
+ curve.setOvershoot(value);
+ m_anim->setEasingCurve(curve);
+}
+