| /**************************************************************************** |
| ** |
| ** Copyright (C) 2018 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the lottie-qt 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 "bmgfill_p.h" |
| |
| #include <QLinearGradient> |
| #include <QRadialGradient> |
| #include <QtMath> |
| #include <QColor> |
| |
| QT_BEGIN_NAMESPACE |
| |
| BMGFill::BMGFill(const BMGFill &other) |
| : BMShape(other) |
| { |
| m_opacity = other.m_opacity; |
| m_startPoint = other.m_startPoint; |
| m_endPoint = other.m_endPoint; |
| m_highlightLength = other.m_highlightLength; |
| m_highlightAngle = other.m_highlightAngle; |
| m_colors = other.m_colors; |
| if (other.gradientType() == QGradient::LinearGradient) |
| m_gradient = new QLinearGradient; |
| else if (other.gradientType() == QGradient::RadialGradient) |
| m_gradient = new QRadialGradient; |
| else { |
| Q_UNREACHABLE(); |
| } |
| } |
| |
| BMGFill::~BMGFill() |
| { |
| if (m_gradient) |
| delete m_gradient; |
| } |
| |
| BMBase *BMGFill::clone() const |
| { |
| return new BMGFill(*this); |
| } |
| |
| BMGFill::BMGFill(const QJsonObject &definition, BMBase *parent) |
| { |
| setParent(parent); |
| |
| BMBase::parse(definition); |
| if (m_hidden) |
| return; |
| |
| qCDebug(lcLottieQtBodymovinParser) << "BMGFill::construct():" << m_name; |
| |
| int type = definition.value(QLatin1String("t")).toVariant().toInt(); |
| switch (type) { |
| case 1: |
| m_gradient = new QLinearGradient; |
| break; |
| case 2: |
| m_gradient = new QRadialGradient; |
| break; |
| default: |
| qCWarning(lcLottieQtBodymovinParser) << "Unknown gradient fill type"; |
| } |
| |
| QJsonObject color = definition.value(QLatin1String("g")).toObject(); |
| QJsonArray colorArr = color.value(QLatin1String("k")).toObject().value(QLatin1String("k")).toArray(); |
| int elementCount = color.value(QLatin1String("p")).toInt(); |
| for (int i = 0; i < (elementCount) * 4; i += 4) { |
| // p denotes the color stop percentage |
| QVector4D colorVec; |
| colorVec[0] = colorArr[i + 1].toVariant().toFloat(); |
| colorVec[1] = colorArr[i + 2].toVariant().toFloat(); |
| colorVec[2] = colorArr[i + 3].toVariant().toFloat(); |
| // Set gradient stop position into w of the vector |
| colorVec[3] = colorArr[i + 0].toVariant().toFloat(); |
| BMProperty4D<QVector4D> colorPos; |
| colorPos.setValue(colorVec); |
| m_colors.push_back(colorPos); |
| } |
| |
| QJsonObject opacity = definition.value(QLatin1String("o")).toObject(); |
| opacity = resolveExpression(opacity); |
| m_opacity.construct(opacity); |
| |
| QJsonObject startPoint = definition.value(QLatin1String("s")).toObject(); |
| startPoint = resolveExpression(startPoint); |
| m_startPoint.construct(startPoint); |
| |
| QJsonObject endPoint = definition.value(QLatin1String("e")).toObject(); |
| endPoint = resolveExpression(endPoint); |
| m_endPoint.construct(endPoint); |
| |
| QJsonObject highlight = definition.value(QLatin1String("h")).toObject(); |
| m_highlightLength.construct(highlight); |
| |
| QJsonObject angle = definition.value(QLatin1String("a")).toObject(); |
| angle = resolveExpression(angle); |
| m_highlightAngle.construct(angle); |
| |
| m_highlightAngle.setValue(0.0); |
| } |
| |
| void BMGFill::updateProperties(int frame) |
| { |
| QGradient::Type type = gradientType(); |
| if (type != QGradient::LinearGradient && |
| type != QGradient::RadialGradient) |
| return; |
| |
| m_startPoint.update(frame); |
| m_endPoint.update(frame); |
| m_highlightLength.update(frame); |
| m_highlightAngle.update(frame); |
| m_opacity.update(frame); |
| QList<BMProperty4D<QVector4D>>::iterator colorIt = m_colors.begin(); |
| while (colorIt != m_colors.end()) { |
| (*colorIt).update(frame); |
| ++colorIt; |
| } |
| |
| setGradient(); |
| } |
| |
| void BMGFill::render(LottieRenderer &renderer) const |
| { |
| renderer.render(*this); |
| } |
| |
| QGradient *BMGFill::value() const |
| { |
| return m_gradient; |
| } |
| |
| QGradient::Type BMGFill::gradientType() const |
| { |
| if (m_gradient) |
| return m_gradient->type(); |
| else |
| return QGradient::NoGradient; |
| } |
| |
| QPointF BMGFill::startPoint() const |
| { |
| return m_startPoint.value(); |
| } |
| |
| QPointF BMGFill::endPoint() const |
| { |
| return m_endPoint.value(); |
| } |
| |
| qreal BMGFill::highlightLength() const |
| { |
| return m_highlightLength.value(); |
| } |
| |
| qreal BMGFill::highlightAngle() const |
| { |
| return m_highlightAngle.value(); |
| } |
| |
| qreal BMGFill::opacity() const |
| { |
| return m_opacity.value(); |
| } |
| |
| void BMGFill::setGradient() |
| { |
| QList<BMProperty4D<QVector4D>>::iterator colorIt = m_colors.begin(); |
| while (colorIt != m_colors.end()) { |
| QVector4D colorPos = (*colorIt).value(); |
| QColor color; |
| color.setRedF(static_cast<qreal>(colorPos[0])); |
| color.setGreenF(static_cast<qreal>(colorPos[1])); |
| color.setBlueF(static_cast<qreal>(colorPos[2])); |
| color.setAlphaF(m_opacity.value() / 100.0); |
| m_gradient->setColorAt(static_cast<qreal>(colorPos[3]), |
| color); |
| ++colorIt; |
| } |
| |
| switch (gradientType()) { |
| case QGradient::LinearGradient: |
| { |
| QLinearGradient *g = static_cast<QLinearGradient*>(m_gradient); |
| g->setStart(m_startPoint.value()); |
| g->setFinalStop(m_endPoint.value()); |
| break; |
| } |
| case QGradient::RadialGradient: |
| { |
| QRadialGradient *g = static_cast<QRadialGradient*>(m_gradient); |
| qreal dx = qAbs(m_endPoint.value().x() + m_startPoint.value().x()); |
| qreal dy = qAbs(m_endPoint.value().y() + m_startPoint.value().y()); |
| qreal radius = qSqrt(dx * dx + dy * dy); |
| qreal angle = qAsin(dy / radius); |
| g->setCenter(m_startPoint.value()); |
| g->setCenterRadius(radius); |
| qreal focusRadius = 2; |
| qreal x = (g->radius() - 2 * focusRadius) * qCos(angle + qDegreesToRadians(m_highlightAngle.value())); |
| qreal y = (g->radius() - 2 * focusRadius) * qSin(angle + qDegreesToRadians(m_highlightAngle.value())); |
| g->setFocalPoint(g->center() + QPointF(x, y)); |
| g->setFocalRadius(focusRadius); |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| QT_END_NAMESPACE |