baranimation.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/baranimation_p.h> | ||||
#include <private/abstractbarchartitem_p.h> | ||||
Q_DECLARE_METATYPE(QVector<QRectF>) | ||||
QT_CHARTS_BEGIN_NAMESPACE | ||||
BarAnimation::BarAnimation(AbstractBarChartItem *item, int duration, QEasingCurve &curve) | ||||
: ChartAnimation(item), | ||||
m_item(item) | ||||
{ | ||||
setDuration(duration); | ||||
setEasingCurve(curve); | ||||
} | ||||
BarAnimation::~BarAnimation() | ||||
{ | ||||
} | ||||
QVariant BarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const | ||||
{ | ||||
QVector<QRectF> startVector = qvariant_cast<QVector<QRectF> >(from); | ||||
QVector<QRectF> endVector = qvariant_cast<QVector<QRectF> >(to); | ||||
QVector<QRectF> result; | ||||
Q_ASSERT(startVector.count() == endVector.count()); | ||||
for (int i = 0; i < startVector.count(); i++) { | ||||
QRectF start = startVector[i].normalized(); | ||||
QRectF end = endVector[i].normalized(); | ||||
qreal x1 = start.left() + progress * (end.left() - start.left()); | ||||
qreal x2 = start.right() + progress * (end.right() - start.right()); | ||||
qreal y1 = start.top() + progress * (end.top() - start.top()); | ||||
qreal y2 = start.bottom() + progress * (end.bottom() - start.bottom()); | ||||
QRectF value(QPointF(x1, y1), QPointF(x2, y2)); | ||||
result << value.normalized(); | ||||
} | ||||
return qVariantFromValue(result); | ||||
} | ||||
void BarAnimation::updateCurrentValue(const QVariant &value) | ||||
{ | ||||
if (state() != QAbstractAnimation::Stopped) { //workaround | ||||
QVector<QRectF> layout = qvariant_cast<QVector<QRectF> >(value); | ||||
m_item->setLayout(layout); | ||||
} | ||||
} | ||||
void BarAnimation::setup(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout) | ||||
{ | ||||
QVariantAnimation::KeyValues value; | ||||
setKeyValues(value); //workaround for wrong interpolation call | ||||
setKeyValueAt(0.0, qVariantFromValue(oldLayout)); | ||||
setKeyValueAt(1.0, qVariantFromValue(newLayout)); | ||||
} | ||||
#include "moc_baranimation_p.cpp" | ||||
QT_CHARTS_END_NAMESPACE | ||||