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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#include "qquickbasicprogressbar_p.h"
#include <QtCore/qeasingcurve.h>
#include <QtQuick/private/qquickitem_p.h>
#include <QtQuick/private/qsgadaptationlayer_p.h>
#include <QtQuickControls2Impl/private/qquickanimatednode_p.h>
QT_BEGIN_NAMESPACE
static const int Blocks = 4;
static const int BlockWidth = 16;
static const int BlockRestingSpacing = 4;
static const int BlockMovingSpacing = 48;
static const int BlockSpan = Blocks * (BlockWidth + BlockRestingSpacing) - BlockRestingSpacing;
static const int QbpbTotalDuration = 4000;
static const int SecondPhaseStart = QbpbTotalDuration * 0.4;
static const int ThirdPhaseStart = QbpbTotalDuration * 0.6;
static inline qreal blockStartX(int blockIndex)
{
return ((blockIndex + 1) * -BlockWidth) - (blockIndex * BlockMovingSpacing);
}
static inline qreal blockRestX(int blockIndex, qreal availableWidth)
{
const qreal spanRightEdgePos = availableWidth / 2 + BlockSpan / 2.0;
return spanRightEdgePos - (blockIndex + 1) * BlockWidth - (blockIndex * BlockRestingSpacing);
}
static inline qreal blockEndX(int blockIndex, qreal availableWidth)
{
return availableWidth - blockStartX(Blocks - 1 - blockIndex) - BlockWidth;
}
class QQuickBasicProgressBarNode : public QQuickAnimatedNode
{
public:
QQuickBasicProgressBarNode(QQuickBasicProgressBar *item);
void updateCurrentTime(int time) override;
void sync(QQuickItem *item) override;
private:
bool m_indeterminate = false;
qreal m_pixelsPerSecond = 0;
};
QQuickBasicProgressBarNode::QQuickBasicProgressBarNode(QQuickBasicProgressBar *item)
: QQuickAnimatedNode(item),
m_pixelsPerSecond(item->width())
{
setLoopCount(Infinite);
setDuration(QbpbTotalDuration);
}
void QQuickBasicProgressBarNode::updateCurrentTime(int time)
{
QSGTransformNode *transformNode = static_cast<QSGTransformNode*>(firstChild());
for (int i = 0; i < Blocks; ++i) {
Q_ASSERT(transformNode->type() == QSGNode::TransformNodeType);
QMatrix4x4 m;
const qreal restX = blockRestX(i, m_pixelsPerSecond);
const qreal timeInSeconds = time / 1000.0;
if (time < SecondPhaseStart) {
// Move into the resting position for the first phase.
QEasingCurve easingCurve(QEasingCurve::InQuad);
const qreal easedCompletion = easingCurve.valueForProgress(time / qreal(SecondPhaseStart));
const qreal distance = m_pixelsPerSecond * (easedCompletion * (SecondPhaseStart / 1000.0));
const qreal position = blockStartX(i) + distance;
const qreal destination = restX;
m.translate(qMin(position, destination), 0);
} else if (time < ThirdPhaseStart) {
// Stay in the same position for the second phase.
m.translate(restX, 0);
} else {
// Move out of view for the third phase.
const int thirdPhaseSubKickoff = (BlockMovingSpacing / m_pixelsPerSecond) * 1000;
const int subphase = (time - ThirdPhaseStart) / thirdPhaseSubKickoff;
// If we're not at this subphase yet, don't try to animate movement,
// because it will be incorrect.
if (subphase < i)
return;
const qreal timeSinceSecondPhase = timeInSeconds - (ThirdPhaseStart / 1000.0);
// We only want to start keeping track of time once our subphase has started,
// otherwise we move too much because we account for time that has already elapsed.
// For example, if we were 60 milliseconds into the third subphase:
//
// 0 ..... 1 ..... 2 ...
// 100 100 60
//
// i == 0, timeSinceOurKickoff == 260
// i == 1, timeSinceOurKickoff == 160
// i == 2, timeSinceOurKickoff == 60
const qreal timeSinceOurKickoff = timeSinceSecondPhase - (thirdPhaseSubKickoff / 1000.0 * i);
const qreal position = restX + (m_pixelsPerSecond * (timeSinceOurKickoff));
const qreal destination = blockEndX(i, m_pixelsPerSecond);
m.translate(qMin(position, destination), 0);
}
transformNode->setMatrix(m);
transformNode = static_cast<QSGTransformNode*>(transformNode->nextSibling());
}
}
void QQuickBasicProgressBarNode::sync(QQuickItem *item)
{
QQuickBasicProgressBar *bar = static_cast<QQuickBasicProgressBar *>(item);
if (m_indeterminate != bar->isIndeterminate()) {
m_indeterminate = bar->isIndeterminate();
if (m_indeterminate)
start();
else
stop();
}
m_pixelsPerSecond = item->width();
QQuickItemPrivate *d = QQuickItemPrivate::get(item);
QMatrix4x4 m;
m.translate(0, (item->height() - item->implicitHeight()) / 2);
setMatrix(m);
if (m_indeterminate) {
if (childCount() != Blocks) {
// This was previously a regular progress bar; remove the old nodes.
removeAllChildNodes();
}
QSGTransformNode *transformNode = static_cast<QSGTransformNode*>(firstChild());
for (int i = 0; i < Blocks; ++i) {
if (!transformNode) {
transformNode = new QSGTransformNode;
appendChildNode(transformNode);
}
QSGInternalRectangleNode *rectNode = static_cast<QSGInternalRectangleNode*>(transformNode->firstChild());
if (!rectNode) {
rectNode = d->sceneGraphContext()->createInternalRectangleNode();
transformNode->appendChildNode(rectNode);
}
QMatrix4x4 m;
m.translate(blockStartX(i), 0);
transformNode->setMatrix(m);
// Set the color here too in case it was set after component completion,
// as updateCurrentTime doesn't sync it.
rectNode->setColor(bar->color());
rectNode->setRect(QRectF(QPointF(0, 0), QSizeF(BlockWidth, item->implicitHeight())));
rectNode->update();
transformNode = static_cast<QSGTransformNode *>(transformNode->nextSibling());
}
} else {
if (childCount() > 1) {
// This was previously an indeterminate progress bar; remove the old nodes.
removeAllChildNodes();
}
QSGInternalRectangleNode *rectNode = static_cast<QSGInternalRectangleNode *>(firstChild());
if (!rectNode) {
rectNode = d->sceneGraphContext()->createInternalRectangleNode();
appendChildNode(rectNode);
}
// Always set the color, not just when creating the rectangle node, so that we respect
// changes that are made after component completion.
rectNode->setColor(bar->color());
rectNode->setRect(QRectF(QPointF(0, 0), QSizeF(bar->progress() * item->width(), item->implicitHeight())));
rectNode->update();
}
}
QQuickBasicProgressBar::QQuickBasicProgressBar(QQuickItem *parent) :
QQuickItem(parent)
{
setFlag(ItemHasContents);
}
qreal QQuickBasicProgressBar::progress() const
{
return m_progress;
}
void QQuickBasicProgressBar::setProgress(qreal progress)
{
if (progress == m_progress)
return;
m_progress = progress;
update();
}
bool QQuickBasicProgressBar::isIndeterminate() const
{
return m_indeterminate;
}
void QQuickBasicProgressBar::setIndeterminate(bool indeterminate)
{
if (indeterminate == m_indeterminate)
return;
m_indeterminate = indeterminate;
setClip(m_indeterminate);
update();
}
QColor QQuickBasicProgressBar::color() const
{
return m_color;
}
void QQuickBasicProgressBar::setColor(const QColor &color)
{
if (color == m_color)
return;
m_color = color;
update();
}
void QQuickBasicProgressBar::itemChange(QQuickItem::ItemChange change, const QQuickItem::ItemChangeData &data)
{
QQuickItem::itemChange(change, data);
if (change == ItemVisibleHasChanged)
update();
}
QSGNode *QQuickBasicProgressBar::updatePaintNode(QSGNode *oldNode, QQuickItem::UpdatePaintNodeData *)
{
QQuickBasicProgressBarNode *node = static_cast<QQuickBasicProgressBarNode *>(oldNode);
if (isVisible() && width() > 0 && height() > 0) {
if (!node)
node = new QQuickBasicProgressBarNode(this);
node->sync(this);
} else {
delete node;
node = nullptr;
}
return node;
}
QT_END_NAMESPACE
#include "moc_qquickbasicprogressbar_p.cpp"