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Diffstat (limited to 'examples/animation/easing/window.cpp')
| -rw-r--r-- | examples/animation/easing/window.cpp | 177 |
1 files changed, 177 insertions, 0 deletions
diff --git a/examples/animation/easing/window.cpp b/examples/animation/easing/window.cpp new file mode 100644 index 0000000..f6f3165 --- /dev/null +++ b/examples/animation/easing/window.cpp @@ -0,0 +1,177 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** 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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at http://qt.nokia.com/contact. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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); +} + |