splineanimation.cpp
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r0 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2016 The Qt Company Ltd. | ||||
** Contact: https://www.qt.io/licensing/ | ||||
** | ||||
** This file is part of the Qt Charts module of the Qt Toolkit. | ||||
** | ||||
** $QT_BEGIN_LICENSE:GPL$ | ||||
** Commercial License Usage | ||||
** Licensees holding valid commercial Qt licenses may use this file in | ||||
** accordance with the commercial license agreement provided with the | ||||
** Software or, alternatively, in accordance with the terms contained in | ||||
** a written agreement between you and The Qt Company. For licensing terms | ||||
** and conditions see https://www.qt.io/terms-conditions. For further | ||||
** information use the contact form at https://www.qt.io/contact-us. | ||||
** | ||||
** GNU General Public License Usage | ||||
** Alternatively, this file may be used under the terms of the GNU | ||||
** General Public License version 3 or (at your option) any later version | ||||
** approved by the KDE Free Qt Foundation. The licenses are as published by | ||||
** the Free Software Foundation and appearing in the file LICENSE.GPL3 | ||||
** included in the packaging of this file. Please review the following | ||||
** information to ensure the GNU General Public License requirements will | ||||
** be met: https://www.gnu.org/licenses/gpl-3.0.html. | ||||
** | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include <private/splineanimation_p.h> | ||||
#include <private/splinechartitem_p.h> | ||||
#include <QtCore/QDebug> | ||||
Q_DECLARE_METATYPE(QVector<QPointF>) | ||||
Q_DECLARE_METATYPE(SplineVector) | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
SplineAnimation::SplineAnimation(SplineChartItem *item, int duration, QEasingCurve &curve) | ||||
: XYAnimation(item, duration, curve), | ||||
m_item(item), | ||||
m_valid(false) | ||||
{ | ||||
} | ||||
SplineAnimation::~SplineAnimation() | ||||
{ | ||||
} | ||||
void SplineAnimation::setup(QVector<QPointF> &oldPoints, QVector<QPointF> &newPoints, QVector<QPointF> &oldControlPoints, QVector<QPointF> &newControlPoints, int index) | ||||
{ | ||||
if (newPoints.count() * 2 - 2 != newControlPoints.count() || newControlPoints.count() < 2) { | ||||
m_valid = false; | ||||
m_dirty = false; | ||||
m_item->setGeometryPoints(newPoints); | ||||
m_item->setControlGeometryPoints(newControlPoints); | ||||
m_item->setDirty(false); | ||||
m_item->updateGeometry(); | ||||
return; | ||||
} | ||||
m_type = NewAnimation; | ||||
if (state() != QAbstractAnimation::Stopped) { | ||||
stop(); | ||||
m_dirty = false; | ||||
} | ||||
if (!m_dirty) { | ||||
m_dirty = true; | ||||
m_oldSpline.first = oldPoints; | ||||
m_oldSpline.second = oldControlPoints; | ||||
} | ||||
m_newSpline.first = newPoints; | ||||
m_newSpline.second = newControlPoints; | ||||
int x = m_oldSpline.first.count(); | ||||
int y = m_newSpline.first.count(); | ||||
if (x - y == 1 && index >= 0 && y > 0) { | ||||
//remove point | ||||
if (index > 0) { | ||||
m_newSpline.first.insert(index, newPoints[index - 1]); | ||||
m_newSpline.second.insert((index - 1) * 2, newPoints[index - 1]); | ||||
m_newSpline.second.insert((index - 1) * 2 + 1, newPoints[index - 1]); | ||||
} else { | ||||
m_newSpline.first.insert(0, newPoints[index]); | ||||
m_newSpline.second.insert(0, newPoints[index]); | ||||
m_newSpline.second.insert(1, newPoints[index]); | ||||
} | ||||
m_index = index; | ||||
m_type = RemovePointAnimation; | ||||
} | ||||
if (x - y == -1 && index >= 0) { | ||||
//add point | ||||
if (index > 0) { | ||||
m_oldSpline.first.insert(index, newPoints[index - 1]); | ||||
m_oldSpline.second.insert((index - 1) * 2, newPoints[index - 1]); | ||||
m_oldSpline.second.insert((index - 1) * 2 + 1, newPoints[index - 1]); | ||||
} else { | ||||
m_oldSpline.first.insert(0, newPoints[index]); | ||||
m_oldSpline.second.insert(0, newPoints[index]); | ||||
m_oldSpline.second.insert(1, newPoints[index]); | ||||
} | ||||
m_index = index; | ||||
m_type = AddPointAnimation; | ||||
} | ||||
x = m_oldSpline.first.count(); | ||||
y = m_newSpline.first.count(); | ||||
if (x != y) { | ||||
m_type = NewAnimation; | ||||
} else if (m_type == NewAnimation) { | ||||
m_type = ReplacePointAnimation; | ||||
} | ||||
setKeyValueAt(0.0, qVariantFromValue(m_oldSpline)); | ||||
setKeyValueAt(1.0, qVariantFromValue(m_newSpline)); | ||||
m_valid = true; | ||||
} | ||||
QVariant SplineAnimation::interpolated(const QVariant &start, const QVariant &end, qreal progress) const | ||||
{ | ||||
SplineVector startPair = qvariant_cast< SplineVector >(start); | ||||
SplineVector endPair = qvariant_cast< SplineVector >(end); | ||||
SplineVector result; | ||||
switch (animationType()) { | ||||
case RemovePointAnimation: | ||||
case AddPointAnimation: | ||||
case ReplacePointAnimation: { | ||||
if (startPair.first.count() != endPair.first.count()) | ||||
break; | ||||
Q_ASSERT(startPair.first.count() * 2 - 2 == startPair.second.count()); | ||||
Q_ASSERT(endPair.first.count() * 2 - 2 == endPair.second.count()); | ||||
for (int i = 0; i < endPair.first.count(); i++) { | ||||
qreal x = startPair.first[i].x() + ((endPair.first[i].x() - startPair.first[i].x()) * progress); | ||||
qreal y = startPair.first[i].y() + ((endPair.first[i].y() - startPair.first[i].y()) * progress); | ||||
result.first << QPointF(x, y); | ||||
if (i + 1 >= endPair.first.count()) | ||||
continue; | ||||
x = startPair.second[i * 2].x() + ((endPair.second[i * 2].x() - startPair.second[i * 2].x()) * progress); | ||||
y = startPair.second[i * 2].y() + ((endPair.second[i * 2].y() - startPair.second[i * 2].y()) * progress); | ||||
result.second << QPointF(x, y); | ||||
x = startPair.second[i * 2 + 1].x() + ((endPair.second[i * 2 + 1].x() - startPair.second[i * 2 + 1].x()) * progress); | ||||
y = startPair.second[i * 2 + 1].y() + ((endPair.second[i * 2 + 1].y() - startPair.second[i * 2 + 1].y()) * progress); | ||||
result.second << QPointF(x, y); | ||||
} | ||||
} | ||||
break; | ||||
case NewAnimation: { | ||||
Q_ASSERT(endPair.first.count() * 2 - 2 == endPair.second.count()); | ||||
int count = endPair.first.count() * qBound(qreal(0), progress, qreal(1)); | ||||
for (int i = 0; i < count; i++) { | ||||
result.first << endPair.first[i]; | ||||
if (i + 1 == count) | ||||
break; | ||||
result.second << endPair.second[2 * i]; | ||||
result.second << endPair.second[2 * i + 1]; | ||||
} | ||||
} | ||||
break; | ||||
default: | ||||
qWarning() << "Unknown type of animation"; | ||||
break; | ||||
} | ||||
return qVariantFromValue(result); | ||||
} | ||||
void SplineAnimation::updateCurrentValue(const QVariant &value) | ||||
{ | ||||
if (state() != QAbstractAnimation::Stopped && m_valid) { //workaround | ||||
QPair<QVector<QPointF >, QVector<QPointF > > pair = qvariant_cast< QPair< QVector<QPointF>, QVector<QPointF> > >(value); | ||||
m_item->setGeometryPoints(pair.first); | ||||
m_item->setControlGeometryPoints(pair.second); | ||||
m_item->updateGeometry(); | ||||
m_item->setDirty(true); | ||||
m_dirty = false; | ||||
} | ||||
} | ||||
void SplineAnimation::updateState(QAbstractAnimation::State newState, QAbstractAnimation::State oldState) | ||||
{ | ||||
XYAnimation::updateState(newState, oldState); | ||||
if (oldState == QAbstractAnimation::Running && newState == QAbstractAnimation::Stopped) { | ||||
if (m_item->isDirty() && m_type == RemovePointAnimation) { | ||||
if (!m_newSpline.first.isEmpty()) { | ||||
if (m_index) { | ||||
m_newSpline.first.remove(m_index); | ||||
m_newSpline.second.remove((m_index - 1) * 2); | ||||
m_newSpline.second.remove((m_index - 1) * 2); | ||||
} else { | ||||
m_newSpline.first.remove(0); | ||||
m_newSpline.second.remove(0); | ||||
m_newSpline.second.remove(0); | ||||
} | ||||
} | ||||
m_item->setGeometryPoints(m_newSpline.first); | ||||
m_item->setControlGeometryPoints(m_newSpline.second); | ||||
} | ||||
} | ||||
if (oldState == QAbstractAnimation::Stopped && newState == QAbstractAnimation::Running) { | ||||
if (!m_valid) | ||||
stop(); | ||||
} | ||||
} | ||||
QT_CHARTS_END_NAMESPACE | ||||