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// Copyright (C) 2016 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 "qsgsoftwareinternalrectanglenode_p.h"
#include <qmath.h>
#include <QtGui/QPainter>
QT_BEGIN_NAMESPACE
QSGSoftwareInternalRectangleNode::QSGSoftwareInternalRectangleNode()
: m_penWidth(0)
, m_radius(0)
, m_topLeftRadius(0)
, m_topRightRadius(0)
, m_bottomLeftRadius(0)
, m_bottomRightRadius(0)
, m_devicePixelRatio(1)
, m_vertical(true)
, m_cornerPixmapIsDirty(true)
, m_isTopLeftRadiusSet(false)
, m_isTopRightRadiusSet(false)
, m_isBottomLeftRadiusSet(false)
, m_isBottomRightRadiusSet(false)
{
m_pen.setJoinStyle(Qt::MiterJoin);
m_pen.setMiterLimit(0);
setMaterial((QSGMaterial*)1);
setGeometry((QSGGeometry*)1);
}
void QSGSoftwareInternalRectangleNode::setRect(const QRectF &rect)
{
QRect alignedRect = rect.toAlignedRect();
if (m_rect != alignedRect) {
m_rect = alignedRect;
markDirty(DirtyMaterial);
}
}
void QSGSoftwareInternalRectangleNode::setColor(const QColor &color)
{
if (m_color != color) {
m_color = color;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
}
void QSGSoftwareInternalRectangleNode::setPenColor(const QColor &color)
{
if (m_penColor != color) {
m_penColor = color;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
}
void QSGSoftwareInternalRectangleNode::setPenWidth(qreal width)
{
if (m_penWidth != width) {
m_penWidth = width;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
}
//Move first stop by pos relative to seconds
static QGradientStop interpolateStop(const QGradientStop &firstStop, const QGradientStop &secondStop, double newPos)
{
double distance = secondStop.first - firstStop.first;
double distanceDelta = newPos - firstStop.first;
double modifierValue = distanceDelta / distance;
const auto firstStopRgbColor = firstStop.second.toRgb();
const auto secondStopRgbColor = secondStop.second.toRgb();
int redDelta = (secondStopRgbColor.red() - firstStopRgbColor.red()) * modifierValue;
int greenDelta = (secondStopRgbColor.green() - firstStopRgbColor.green()) * modifierValue;
int blueDelta = (secondStopRgbColor.blue() - firstStopRgbColor.blue()) * modifierValue;
int alphaDelta = (secondStopRgbColor.alpha() - firstStopRgbColor.alpha()) * modifierValue;
QGradientStop newStop;
newStop.first = newPos;
newStop.second = QColor(firstStopRgbColor.red() + redDelta,
firstStopRgbColor.green() + greenDelta,
firstStopRgbColor.blue() + blueDelta,
firstStopRgbColor.alpha() + alphaDelta);
return newStop;
}
void QSGSoftwareInternalRectangleNode::setGradientStops(const QGradientStops &stops)
{
//normalize stops
bool needsNormalization = false;
for (const QGradientStop &stop : std::as_const(stops)) {
if (stop.first < 0.0 || stop.first > 1.0) {
needsNormalization = true;
break;
}
}
if (needsNormalization) {
QGradientStops normalizedStops;
if (stops.size() == 1) {
//If there is only one stop, then the position does not matter
//It is just treated as a color
QGradientStop stop = stops.at(0);
stop.first = 0.0;
normalizedStops.append(stop);
} else {
//Clip stops to only the first below 0.0 and above 1.0
int below = -1;
int above = -1;
QList<int> between;
for (int i = 0; i < stops.size(); ++i) {
if (stops.at(i).first < 0.0) {
below = i;
} else if (stops.at(i).first > 1.0) {
above = i;
break;
} else {
between.append(i);
}
}
//Interpoloate new color values for above and below
if (below != -1 ) {
//If there are more than one stops left, interpolate
if (below + 1 < stops.size()) {
normalizedStops.append(interpolateStop(stops.at(below), stops.at(below + 1), 0.0));
} else {
QGradientStop singleStop;
singleStop.first = 0.0;
singleStop.second = stops.at(below).second;
normalizedStops.append(singleStop);
}
}
for (int i = 0; i < between.size(); ++i)
normalizedStops.append(stops.at(between.at(i)));
if (above != -1) {
//If there stops before above, interpolate
if (above >= 1) {
normalizedStops.append(interpolateStop(stops.at(above), stops.at(above - 1), 1.0));
} else {
QGradientStop singleStop;
singleStop.first = 1.0;
singleStop.second = stops.at(above).second;
normalizedStops.append(singleStop);
}
}
}
m_stops = normalizedStops;
} else {
m_stops = stops;
}
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setGradientVertical(bool vertical)
{
if (m_vertical != vertical) {
m_vertical = vertical;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
}
void QSGSoftwareInternalRectangleNode::setRadius(qreal radius)
{
if (m_radius == radius)
return;
m_radius = radius;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setTopLeftRadius(qreal radius)
{
if (m_isTopLeftRadiusSet && m_topLeftRadius == radius)
return;
m_isTopLeftRadiusSet = true;
m_topLeftRadius = radius;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setTopRightRadius(qreal radius)
{
if (m_isTopRightRadiusSet && m_topRightRadius == radius)
return;
m_isTopRightRadiusSet = true;
m_topRightRadius = radius;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setBottomLeftRadius(qreal radius)
{
if (m_isBottomLeftRadiusSet && m_bottomLeftRadius == radius)
return;
m_isBottomLeftRadiusSet = true;
m_bottomLeftRadius = radius;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setBottomRightRadius(qreal radius)
{
if (m_isBottomRightRadiusSet && m_bottomRightRadius == radius)
return;
m_isBottomRightRadiusSet = true;
m_bottomRightRadius = radius;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::resetTopLeftRadius()
{
if (!m_isTopLeftRadiusSet)
return;
m_isTopLeftRadiusSet = false;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::resetTopRightRadius()
{
if (!m_isTopRightRadiusSet)
return;
m_isTopRightRadiusSet = false;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::resetBottomLeftRadius()
{
if (!m_isBottomLeftRadiusSet)
return;
m_isBottomLeftRadiusSet = false;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::resetBottomRightRadius()
{
if (!m_isBottomRightRadiusSet)
return;
m_isBottomRightRadiusSet = false;
m_cornerPixmapIsDirty = true;
markDirty(DirtyMaterial);
}
void QSGSoftwareInternalRectangleNode::setAligned(bool /*aligned*/)
{
}
void QSGSoftwareInternalRectangleNode::update()
{
if (!m_penWidth || m_penColor == Qt::transparent) {
m_pen = Qt::NoPen;
} else {
m_pen = QPen(m_penColor);
m_pen.setWidthF(m_penWidth);
}
if (!m_stops.isEmpty()) {
QLinearGradient gradient(QPoint(0,0), QPoint(m_vertical ? 0 : m_rect.width(), m_vertical ? m_rect.height() : 0));
gradient.setStops(m_stops);
m_brush = QBrush(gradient);
} else {
m_brush = QBrush(m_color);
}
if (m_cornerPixmapIsDirty) {
generateCornerPixmap();
m_cornerPixmapIsDirty = false;
}
}
void QSGSoftwareInternalRectangleNode::paint(QPainter *painter)
{
//We can only check for a device pixel ratio change when we know what
//paint device is being used.
if (!qFuzzyCompare(painter->device()->devicePixelRatio(), m_devicePixelRatio)) {
m_devicePixelRatio = painter->device()->devicePixelRatio();
generateCornerPixmap();
}
if (painter->transform().isRotating()) {
//Rotated rectangles lose the benefits of direct rendering, and have poor rendering
//quality when using only blits and fills.
if (m_radius == 0
&& m_penWidth == 0
&& !m_isTopLeftRadiusSet
&& !m_isTopRightRadiusSet
&& !m_isBottomLeftRadiusSet
&& !m_isBottomRightRadiusSet) {
//Non-Rounded Rects without borders (fall back to drawRect)
//Most common case
painter->setPen(Qt::NoPen);
painter->setBrush(m_brush);
painter->drawRect(m_rect);
} else if (!m_isTopLeftRadiusSet
&& !m_isTopRightRadiusSet
&& !m_isBottomLeftRadiusSet
&& !m_isBottomRightRadiusSet) {
//Rounded Rects and Rects with Borders
//Avoids broken behaviors of QPainter::drawRect/roundedRect
QPixmap pixmap = QPixmap(qRound(m_rect.width() * m_devicePixelRatio), qRound(m_rect.height() * m_devicePixelRatio));
pixmap.fill(Qt::transparent);
pixmap.setDevicePixelRatio(m_devicePixelRatio);
QPainter pixmapPainter(&pixmap);
paintRectangle(&pixmapPainter, QRect(0, 0, m_rect.width(), m_rect.height()));
QPainter::RenderHints previousRenderHints = painter->renderHints();
painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
painter->drawPixmap(m_rect, pixmap);
painter->setRenderHints(previousRenderHints);
} else {
// Corners with different radii. Split implementation to avoid
// performance regression of the majority of cases
QPixmap pixmap = QPixmap(qRound(m_rect.width() * m_devicePixelRatio), qRound(m_rect.height() * m_devicePixelRatio));
pixmap.fill(Qt::transparent);
pixmap.setDevicePixelRatio(m_devicePixelRatio);
QPainter pixmapPainter(&pixmap);
// Slow function relying on paths
paintRectangleIndividualCorners(&pixmapPainter, QRect(0, 0, m_rect.width(), m_rect.height()));
QPainter::RenderHints previousRenderHints = painter->renderHints();
painter->setRenderHint(QPainter::SmoothPixmapTransform, true);
painter->drawPixmap(m_rect, pixmap);
painter->setRenderHints(previousRenderHints);
}
} else {
//Paint directly
if (!m_isTopLeftRadiusSet
&& !m_isTopRightRadiusSet
&& !m_isBottomLeftRadiusSet
&& !m_isBottomRightRadiusSet) {
paintRectangle(painter, m_rect);
} else {
paintRectangleIndividualCorners(painter, m_rect);
}
}
}
bool QSGSoftwareInternalRectangleNode::isOpaque() const
{
if (m_radius > 0.0f
|| m_topLeftRadius > 0.0f
|| m_topRightRadius > 0.0f
|| m_bottomRightRadius > 0.0f
|| m_bottomLeftRadius > 0.0f)
return false;
if (m_color.alpha() < 255)
return false;
if (m_penWidth > 0.0f && m_penColor.alpha() < 255)
return false;
if (m_stops.size() > 0) {
for (const QGradientStop &stop : std::as_const(m_stops)) {
if (stop.second.alpha() < 255)
return false;
}
}
return true;
}
QRectF QSGSoftwareInternalRectangleNode::rect() const
{
//TODO: double check that this is correct.
return m_rect;
}
void QSGSoftwareInternalRectangleNode::paintRectangle(QPainter *painter, const QRect &rect)
{
//Radius should never exceeds half of the width or half of the height
int radius = qFloor(qMin(qMin(rect.width(), rect.height()) * 0.5, m_radius));
QPainter::RenderHints previousRenderHints = painter->renderHints();
painter->setRenderHint(QPainter::Antialiasing, false);
if (m_penWidth > 0) {
//Fill border Rects
//Borders can not be more than half the height/width of a rect
double borderWidth = qMin(m_penWidth, rect.width() * 0.5);
double borderHeight = qMin(m_penWidth, rect.height() * 0.5);
if (borderWidth > radius) {
//4 Rects
QRectF borderTopOutside(QPointF(rect.x() + radius, rect.y()),
QPointF(rect.x() + rect.width() - radius, rect.y() + radius));
QRectF borderTopInside(QPointF(rect.x() + borderWidth, rect.y() + radius),
QPointF(rect.x() + rect.width() - borderWidth, rect.y() + borderHeight));
QRectF borderBottomOutside(QPointF(rect.x() + radius, rect.y() + rect.height() - radius),
QPointF(rect.x() + rect.width() - radius, rect.y() + rect.height()));
QRectF borderBottomInside(QPointF(rect.x() + borderWidth, rect.y() + rect.height() - borderHeight),
QPointF(rect.x() + rect.width() - borderWidth, rect.y() + rect.height() - radius));
if (borderTopOutside.isValid())
painter->fillRect(borderTopOutside, m_penColor);
if (borderTopInside.isValid())
painter->fillRect(borderTopInside, m_penColor);
if (borderBottomOutside.isValid())
painter->fillRect(borderBottomOutside, m_penColor);
if (borderBottomInside.isValid())
painter->fillRect(borderBottomInside, m_penColor);
} else {
//2 Rects
QRectF borderTop(QPointF(rect.x() + radius, rect.y()),
QPointF(rect.x() + rect.width() - radius, rect.y() + borderHeight));
QRectF borderBottom(QPointF(rect.x() + radius, rect.y() + rect.height() - borderHeight),
QPointF(rect.x() + rect.width() - radius, rect.y() + rect.height()));
if (borderTop.isValid())
painter->fillRect(borderTop, m_penColor);
if (borderBottom.isValid())
painter->fillRect(borderBottom, m_penColor);
}
QRectF borderLeft(QPointF(rect.x(), rect.y() + radius),
QPointF(rect.x() + borderWidth, rect.y() + rect.height() - radius));
QRectF borderRight(QPointF(rect.x() + rect.width() - borderWidth, rect.y() + radius),
QPointF(rect.x() + rect.width(), rect.y() + rect.height() - radius));
if (borderLeft.isValid())
painter->fillRect(borderLeft, m_penColor);
if (borderRight.isValid())
painter->fillRect(borderRight, m_penColor);
}
if (radius > 0) {
if (radius * 2 >= rect.width() && radius * 2 >= rect.height()) {
//Blit whole pixmap for circles
painter->drawPixmap(rect, m_cornerPixmap, m_cornerPixmap.rect());
} else {
//blit 4 corners to border
int scaledRadius = qRound(radius * m_devicePixelRatio);
QRectF topLeftCorner(QPointF(rect.x(), rect.y()),
QPointF(rect.x() + radius, rect.y() + radius));
painter->drawPixmap(topLeftCorner, m_cornerPixmap, QRectF(0, 0, scaledRadius, scaledRadius));
QRectF topRightCorner(QPointF(rect.x() + rect.width() - radius, rect.y()),
QPointF(rect.x() + rect.width(), rect.y() + radius));
painter->drawPixmap(topRightCorner, m_cornerPixmap, QRectF(scaledRadius, 0, scaledRadius, scaledRadius));
QRectF bottomLeftCorner(QPointF(rect.x(), rect.y() + rect.height() - radius),
QPointF(rect.x() + radius, rect.y() + rect.height()));
painter->drawPixmap(bottomLeftCorner, m_cornerPixmap, QRectF(0, scaledRadius, scaledRadius, scaledRadius));
QRectF bottomRightCorner(QPointF(rect.x() + rect.width() - radius, rect.y() + rect.height() - radius),
QPointF(rect.x() + rect.width(), rect.y() + rect.height()));
painter->drawPixmap(bottomRightCorner, m_cornerPixmap, QRectF(scaledRadius, scaledRadius, scaledRadius, scaledRadius));
}
}
QRectF brushRect = QRectF(rect).marginsRemoved(QMarginsF(m_penWidth, m_penWidth, m_penWidth, m_penWidth));
if (brushRect.width() < 0)
brushRect.setWidth(0);
if (brushRect.height() < 0)
brushRect.setHeight(0);
double innerRectRadius = qMax(0.0, radius - m_penWidth);
//If not completely transparent or has a gradient
if (m_color.alpha() > 0 || !m_stops.empty()) {
if (innerRectRadius > 0) {
//Rounded Rect
if (m_stops.empty()) {
//Rounded Rects without gradient need 3 blits
QRectF centerRect(QPointF(brushRect.x() + innerRectRadius, brushRect.y()),
QPointF(brushRect.x() + brushRect.width() - innerRectRadius, brushRect.y() + brushRect.height()));
painter->fillRect(centerRect, m_color);
QRectF leftRect(QPointF(brushRect.x(), brushRect.y() + innerRectRadius),
QPointF(brushRect.x() + innerRectRadius, brushRect.y() + brushRect.height() - innerRectRadius));
painter->fillRect(leftRect, m_color);
QRectF rightRect(QPointF(brushRect.x() + brushRect.width() - innerRectRadius, brushRect.y() + innerRectRadius),
QPointF(brushRect.x() + brushRect.width(), brushRect.y() + brushRect.height() - innerRectRadius));
painter->fillRect(rightRect, m_color);
} else {
//Rounded Rect with gradient (slow)
painter->setPen(Qt::NoPen);
painter->setBrush(m_brush);
painter->drawRoundedRect(brushRect, innerRectRadius, innerRectRadius);
}
} else {
//non-rounded rects only need 1 blit
painter->fillRect(brushRect, m_brush);
}
}
painter->setRenderHints(previousRenderHints);
}
void QSGSoftwareInternalRectangleNode::paintRectangleIndividualCorners(QPainter *painter, const QRect &rect)
{
QPainterPath path;
const float w = m_penWidth;
// Radius should never exceeds half of the width or half of the height
const float radiusTL = qMin(qMin(rect.width(), rect.height()) * 0.5f,
m_isTopLeftRadiusSet ? m_topLeftRadius : m_radius);
const float radiusTR = qMin(qMin(rect.width(), rect.height()) * 0.5f,
m_isTopRightRadiusSet ? m_topRightRadius : m_radius);
const float radiusBL = qMin(qMin(rect.width(), rect.height()) * 0.5f,
m_isBottomLeftRadiusSet ? m_bottomLeftRadius : m_radius);
const float radiusBR = qMin(qMin(rect.width(), rect.height()) * 0.5f,
m_isBottomRightRadiusSet ? m_bottomRightRadius : m_radius);
const float innerRadiusTL = qMin(qMin(rect.width(), rect.height()) * 0.5f, radiusTL - w);
const float innerRadiusTR = qMin(qMin(rect.width(), rect.height()) * 0.5f, radiusTR - w);
const float innerRadiusBL = qMin(qMin(rect.width(), rect.height()) * 0.5f, radiusBL - w);
const float innerRadiusBR = qMin(qMin(rect.width(), rect.height()) * 0.5f, radiusBR - w);
QRect rect2 = rect.adjusted(0, 0, 1, 1);
path.moveTo(rect2.topRight() - QPointF(radiusTR, -w));
if (innerRadiusTR > 0.)
path.arcTo(QRectF(rect2.topRight() - QPointF(radiusTR + innerRadiusTR, -w), 2. * QSizeF(innerRadiusTR, innerRadiusTR)), 90, -90);
else
path.lineTo(rect2.topRight() - QPointF(w, -w));
if (innerRadiusBR > 0.)
path.arcTo(QRectF(rect2.bottomRight() - QPointF(radiusBR + innerRadiusBR, radiusBR + innerRadiusBR), 2. * QSizeF(innerRadiusBR, innerRadiusBR)), 0, -90);
else
path.lineTo(rect2.bottomRight() - QPointF(w, w));
if (innerRadiusBL > 0.)
path.arcTo(QRectF(rect2.bottomLeft() - QPointF(-w, radiusBL + innerRadiusBL), 2. * QSizeF(innerRadiusBL, innerRadiusBL)), -90, -90);
else
path.lineTo(rect2.bottomLeft() - QPointF(-w, w));
if (innerRadiusTL > 0.)
path.arcTo(QRectF(rect2.topLeft() + QPointF(w, w), 2. * QSizeF(innerRadiusTL, innerRadiusTL)), -180, -90);
else
path.lineTo(rect2.topLeft() + QPointF(w, w));
path.closeSubpath();
painter->setPen(Qt::NoPen);
painter->setBrush(m_brush);
painter->drawPath(path);
if (w > 0) {
path.moveTo(rect2.topRight() - QPointF(radiusTR, 0.));
if (radiusTR > 0.)
path.arcTo(QRectF(rect2.topRight() - 2. * QPointF(radiusTR, 0.), 2. * QSizeF(radiusTR, radiusTR)), 90, -90);
else
path.lineTo(rect2.topRight());
if (radiusBR > 0.)
path.arcTo(QRectF(rect2.bottomRight() - 2. * QPointF(radiusBR, radiusBR), 2. * QSizeF(radiusBR, radiusBR)), 0, -90);
else
path.lineTo(rect2.bottomRight());
if (radiusBL > 0.)
path.arcTo(QRectF(rect2.bottomLeft() - 2. * QPointF(0., radiusBL), 2. * QSizeF(radiusBL, radiusBL)), -90, -90);
else
path.lineTo(rect2.bottomLeft());
if (radiusTL > 0.)
path.arcTo(QRectF(rect2.topLeft() - 2. * QPointF(0., 0.), 2. * QSizeF(radiusTL, radiusTL)), -180, -90);
else
path.lineTo(rect2.topLeft());
path.closeSubpath();
painter->setBrush(m_penColor);
painter->drawPath(path);
}
}
void QSGSoftwareInternalRectangleNode::generateCornerPixmap()
{
//Generate new corner Pixmap
int radius = qFloor(qMin(qMin(m_rect.width(), m_rect.height()) * 0.5, m_radius));
const auto width = qRound(radius * 2 * m_devicePixelRatio);
if (m_cornerPixmap.width() != width)
m_cornerPixmap = QPixmap(width, width);
m_cornerPixmap.setDevicePixelRatio(m_devicePixelRatio);
m_cornerPixmap.fill(Qt::transparent);
if (radius > 0) {
QPainter cornerPainter(&m_cornerPixmap);
cornerPainter.setRenderHint(QPainter::Antialiasing);
cornerPainter.setCompositionMode(QPainter::CompositionMode_Source);
//Paint outer cicle
if (m_penWidth > 0) {
cornerPainter.setPen(Qt::NoPen);
cornerPainter.setBrush(m_penColor);
cornerPainter.drawRoundedRect(QRectF(0, 0, radius * 2, radius *2), radius, radius);
}
//Paint inner circle
if (radius > m_penWidth) {
cornerPainter.setPen(Qt::NoPen);
if (m_stops.isEmpty())
cornerPainter.setBrush(m_brush);
else
cornerPainter.setBrush(Qt::transparent);
QMarginsF adjustmentMargins(m_penWidth, m_penWidth, m_penWidth, m_penWidth);
QRectF cornerCircleRect = QRectF(0, 0, radius * 2, radius * 2).marginsRemoved(adjustmentMargins);
cornerPainter.drawRoundedRect(cornerCircleRect, radius, radius);
}
cornerPainter.end();
}
}
QT_END_NAMESPACE