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Diffstat (limited to 'src/quick/scenegraph/adaptations/software/qsgsoftwareinternalrectanglenode.cpp')
| -rw-r--r-- | src/quick/scenegraph/adaptations/software/qsgsoftwareinternalrectanglenode.cpp | 451 |
1 files changed, 451 insertions, 0 deletions
diff --git a/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalrectanglenode.cpp b/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalrectanglenode.cpp new file mode 100644 index 0000000000..f6898b3879 --- /dev/null +++ b/src/quick/scenegraph/adaptations/software/qsgsoftwareinternalrectanglenode.cpp @@ -0,0 +1,451 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or 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.GPL2 and 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-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsgsoftwareinternalrectanglenode_p.h" +#include <qmath.h> + +#include <QtGui/QPainter> + +QT_BEGIN_NAMESPACE + +QSGSoftwareInternalRectangleNode::QSGSoftwareInternalRectangleNode() + : m_penWidth(0) + , m_radius(0) + , m_cornerPixmapIsDirty(true) + , m_devicePixelRatio(1) +{ + 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; + int redDelta = (secondStop.second.red() - firstStop.second.red()) * modifierValue; + int greenDelta = (secondStop.second.green() - firstStop.second.green()) * modifierValue; + int blueDelta = (secondStop.second.blue() - firstStop.second.blue()) * modifierValue; + int alphaDelta = (secondStop.second.alpha() - firstStop.second.alpha()) * modifierValue; + + QGradientStop newStop; + newStop.first = newPos; + newStop.second = QColor(firstStop.second.red() + redDelta, + firstStop.second.green() + greenDelta, + firstStop.second.blue() + blueDelta, + firstStop.second.alpha() + alphaDelta); + + return newStop; +} + +void QSGSoftwareInternalRectangleNode::setGradientStops(const QGradientStops &stops) +{ + //normalize stops + bool needsNormalization = false; + for (const QGradientStop &stop : qAsConst(stops)) { + if (stop.first < 0.0 || stop.first > 1.0) { + needsNormalization = true; + continue; + } + } + + if (needsNormalization) { + QGradientStops normalizedStops; + if (stops.count() == 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; + QVector<int> between; + for (int i = 0; i < stops.count(); ++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.count()) { + 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.count(); ++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::setRadius(qreal radius) +{ + if (m_radius != radius) { + m_radius = radius; + 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(0,1)); + gradient.setStops(m_stops); + gradient.setCoordinateMode(QGradient::ObjectBoundingMode); + 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 (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) { + //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 { + //Rounded Rects and Rects with Borders + //Avoids broken behaviors of QPainter::drawRect/roundedRect + QPixmap pixmap = QPixmap(m_rect.width() * m_devicePixelRatio, 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 { + //Paint directly + paintRectangle(painter, m_rect); + } + +} + +bool QSGSoftwareInternalRectangleNode::isOpaque() const +{ + if (m_radius > 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.count() > 0) { + for (const QGradientStop &stop : qAsConst(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 = 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::generateCornerPixmap() +{ + //Generate new corner Pixmap + int radius = qFloor(qMin(qMin(m_rect.width(), m_rect.height()) * 0.5, m_radius)); + + m_cornerPixmap = QPixmap(radius * 2 * m_devicePixelRatio, radius * 2 * m_devicePixelRatio); + 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 |