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Diffstat (limited to 'src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp')
| -rw-r--r-- | src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp | 687 |
1 files changed, 687 insertions, 0 deletions
diff --git a/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp b/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp new file mode 100644 index 0000000000..8fc850b60c --- /dev/null +++ b/src/quick/scenegraph/qsgbasicinternalrectanglenode.cpp @@ -0,0 +1,687 @@ +/**************************************************************************** +** +** 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 "qsgbasicinternalrectanglenode_p.h" + +#include <QtCore/qmath.h> + +QT_BEGIN_NAMESPACE + +namespace +{ + struct Color4ub + { + unsigned char r, g, b, a; + }; + + Color4ub operator *(Color4ub c, float t) { c.a *= t; c.r *= t; c.g *= t; c.b *= t; return c; } + Color4ub operator +(Color4ub a, Color4ub b) { a.a += b.a; a.r += b.r; a.g += b.g; a.b += b.b; return a; } + + inline Color4ub colorToColor4ub(const QColor &c) + { + Color4ub color = { uchar(qRound(c.redF() * c.alphaF() * 255)), + uchar(qRound(c.greenF() * c.alphaF() * 255)), + uchar(qRound(c.blueF() * c.alphaF() * 255)), + uchar(qRound(c.alphaF() * 255)) + }; + return color; + } + + // Same layout as QSGGeometry::ColoredPoint2D, but uses Color4ub for convenience. + struct Vertex + { + float x, y; + Color4ub color; + void set(float nx, float ny, Color4ub ncolor) + { + x = nx; y = ny; color = ncolor; + } + }; + + struct SmoothVertex : public Vertex + { + float dx, dy; + void set(float nx, float ny, Color4ub ncolor, float ndx, float ndy) + { + Vertex::set(nx, ny, ncolor); + dx = ndx; dy = ndy; + } + }; + + const QSGGeometry::AttributeSet &smoothAttributeSet() + { + static QSGGeometry::Attribute data[] = { + QSGGeometry::Attribute::createWithSemantic(0, 2, QSGGeometry::TypeFloat, QSGGeometry::Attribute::POSITION), + QSGGeometry::Attribute::createWithSemantic(1, 4, QSGGeometry::TypeUnsignedByte, QSGGeometry::Attribute::COLOR), + QSGGeometry::Attribute::createWithSemantic(2, 2, QSGGeometry::TypeFloat, QSGGeometry::Attribute::TEXCOORD) + }; + static QSGGeometry::AttributeSet attrs = { 3, sizeof(SmoothVertex), data }; + return attrs; + } +} + +QSGBasicInternalRectangleNode::QSGBasicInternalRectangleNode() + : m_radius(0) + , m_pen_width(0) + , m_aligned(true) + , m_antialiasing(false) + , m_gradient_is_opaque(true) + , m_dirty_geometry(false) + , m_geometry(QSGGeometry::defaultAttributes_ColoredPoint2D(), 0) +{ + setGeometry(&m_geometry); + +#ifdef QSG_RUNTIME_DESCRIPTION + qsgnode_set_description(this, QLatin1String("internalrectangle")); +#endif +} + +void QSGBasicInternalRectangleNode::setRect(const QRectF &rect) +{ + if (rect == m_rect) + return; + m_rect = rect; + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setColor(const QColor &color) +{ + if (color == m_color) + return; + m_color = color; + if (m_gradient_stops.isEmpty()) + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setPenColor(const QColor &color) +{ + if (color == m_border_color) + return; + m_border_color = color; + if (m_pen_width > 0) + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setPenWidth(qreal width) +{ + if (width == m_pen_width) + return; + m_pen_width = width; + m_dirty_geometry = true; +} + + +void QSGBasicInternalRectangleNode::setGradientStops(const QGradientStops &stops) +{ + if (stops.constData() == m_gradient_stops.constData()) + return; + + m_gradient_stops = stops; + + m_gradient_is_opaque = true; + for (int i = 0; i < stops.size(); ++i) + m_gradient_is_opaque &= stops.at(i).second.alpha() == 0xff; + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setRadius(qreal radius) +{ + if (radius == m_radius) + return; + m_radius = radius; + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setAntialiasing(bool antialiasing) +{ + if (!supportsAntialiasing()) + return; + + if (antialiasing == m_antialiasing) + return; + m_antialiasing = antialiasing; + if (m_antialiasing) { + setGeometry(new QSGGeometry(smoothAttributeSet(), 0)); + setFlag(OwnsGeometry, true); + } else { + setGeometry(&m_geometry); + setFlag(OwnsGeometry, false); + } + updateMaterialAntialiasing(); + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::setAligned(bool aligned) +{ + if (aligned == m_aligned) + return; + m_aligned = aligned; + m_dirty_geometry = true; +} + +void QSGBasicInternalRectangleNode::update() +{ + if (m_dirty_geometry) { + updateGeometry(); + m_dirty_geometry = false; + + QSGNode::DirtyState state = QSGNode::DirtyGeometry; + updateMaterialBlending(&state); + markDirty(state); + } +} + +void QSGBasicInternalRectangleNode::updateGeometry() +{ + float width = float(m_rect.width()); + float height = float(m_rect.height()); + float penWidth = qMin(qMin(width, height) * 0.5f, float(m_pen_width)); + + if (m_aligned) + penWidth = qRound(penWidth); + + QSGGeometry *g = geometry(); + g->setDrawingMode(QSGGeometry::DrawTriangleStrip); + int vertexStride = g->sizeOfVertex(); + + union { + Vertex *vertices; + SmoothVertex *smoothVertices; + }; + + Color4ub fillColor = colorToColor4ub(m_color); + Color4ub borderColor = colorToColor4ub(m_border_color); + Color4ub transparent = { 0, 0, 0, 0 }; + const QGradientStops &stops = m_gradient_stops; + + int nextGradientStop = 0; + float gradientPos = penWidth / height; + while (nextGradientStop < stops.size() && stops.at(nextGradientStop).first <= gradientPos) + ++nextGradientStop; + int lastGradientStop = stops.size() - 1; + float lastGradientPos = 1.0f - penWidth / height; + while (lastGradientStop >= nextGradientStop && stops.at(lastGradientStop).first >= lastGradientPos) + --lastGradientStop; + int gradientIntersections = (lastGradientStop - nextGradientStop + 1); + + if (m_radius > 0) { + // Rounded corners. + + // Radius should never exceeds half of the width or half of the height + float radius = qMin(qMin(width, height) * 0.5f, float(m_radius)); + QRectF innerRect = m_rect; + innerRect.adjust(radius, radius, -radius, -radius); + + float innerRadius = radius - penWidth * 1.0f; + float outerRadius = radius; + float delta = qMin(width, height) * 0.5f; + + // Number of segments per corner, approximately one per 3 pixels. + int segments = qBound(3, qCeil(outerRadius * (M_PI / 6)), 18); + + /* + + --+--__ + --+--__--__ + | --__--__ + | seg --__--+ + --+-__ ment _+ \ + --+-__--__ - \ \ + --__--+ se \ \ + + \ g \ \ + \ \ m \ \ + -----------+--+ e \ \ <- gradient line + \ \ nt\ \ + fill +--+----+--+ + | | | | + border + inner AA outer AA (AA = antialiasing) + + */ + + int innerVertexCount = (segments + 1) * 4 + gradientIntersections * 2; + int outerVertexCount = (segments + 1) * 4; + int vertexCount = innerVertexCount; + if (m_antialiasing || penWidth) + vertexCount += innerVertexCount; + if (penWidth) + vertexCount += outerVertexCount; + if (m_antialiasing && penWidth) + vertexCount += outerVertexCount; + + int fillIndexCount = innerVertexCount; + int innerAAIndexCount = innerVertexCount * 2 + 2; + int borderIndexCount = innerVertexCount * 2 + 2; + int outerAAIndexCount = outerVertexCount * 2 + 2; + int indexCount = 0; + int fillHead = 0; + int innerAAHead = 0; + int innerAATail = 0; + int borderHead = 0; + int borderTail = 0; + int outerAAHead = 0; + int outerAATail = 0; + bool hasFill = m_color.alpha() > 0 || !stops.isEmpty(); + if (hasFill) + indexCount += fillIndexCount; + if (m_antialiasing) { + innerAATail = innerAAHead = indexCount + (innerAAIndexCount >> 1) + 1; + indexCount += innerAAIndexCount; + } + if (penWidth) { + borderTail = borderHead = indexCount + (borderIndexCount >> 1) + 1; + indexCount += borderIndexCount; + } + if (m_antialiasing && penWidth) { + outerAATail = outerAAHead = indexCount + (outerAAIndexCount >> 1) + 1; + indexCount += outerAAIndexCount; + } + + g->allocate(vertexCount, indexCount); + vertices = reinterpret_cast<Vertex *>(g->vertexData()); + memset(vertices, 0, vertexCount * vertexStride); + quint16 *indices = g->indexDataAsUShort(); + quint16 index = 0; + + float py = 0; // previous inner y-coordinate. + float plx = 0; // previous inner left x-coordinate. + float prx = 0; // previous inner right x-coordinate. + + float angle = 0.5f * float(M_PI) / segments; + float cosStep = qFastCos(angle); + float sinStep = qFastSin(angle); + + for (int part = 0; part < 2; ++part) { + float c = 1 - part; + float s = part; + for (int i = 0; i <= segments; ++i) { + float y, lx, rx; + if (innerRadius > 0) { + y = (part ? innerRect.bottom() : innerRect.top()) - innerRadius * c; // current inner y-coordinate. + lx = innerRect.left() - innerRadius * s; // current inner left x-coordinate. + rx = innerRect.right() + innerRadius * s; // current inner right x-coordinate. + gradientPos = ((part ? innerRect.height() : 0) + radius - innerRadius * c) / height; + } else { + y = (part ? innerRect.bottom() + innerRadius : innerRect.top() - innerRadius); // current inner y-coordinate. + lx = innerRect.left() - innerRadius; // current inner left x-coordinate. + rx = innerRect.right() + innerRadius; // current inner right x-coordinate. + gradientPos = ((part ? innerRect.height() + innerRadius : -innerRadius) + radius) / height; + } + float Y = (part ? innerRect.bottom() : innerRect.top()) - outerRadius * c; // current outer y-coordinate. + float lX = innerRect.left() - outerRadius * s; // current outer left x-coordinate. + float rX = innerRect.right() + outerRadius * s; // current outer right x-coordinate. + + while (nextGradientStop <= lastGradientStop && stops.at(nextGradientStop).first <= gradientPos) { + // Insert vertices at gradient stops. + float gy = (innerRect.top() - radius) + stops.at(nextGradientStop).first * height; + float t = (gy - py) / (y - py); + float glx = plx * (1 - t) + t * lx; + float grx = prx * (1 - t) + t * rx; + + fillColor = colorToColor4ub(stops.at(nextGradientStop).second); + + if (hasFill) { + indices[fillHead++] = index; + indices[fillHead++] = index + 1; + } + + if (penWidth) { + --borderHead; + indices[borderHead] = indices[borderHead + 2]; + indices[--borderHead] = index + 2; + indices[borderTail++] = index + 3; + indices[borderTail] = indices[borderTail - 2]; + ++borderTail; + } + + if (m_antialiasing) { + indices[--innerAAHead] = index + 2; + indices[--innerAAHead] = index; + indices[innerAATail++] = index + 1; + indices[innerAATail++] = index + 3; + + bool lower = stops.at(nextGradientStop).first > 0.5f; + float dy = lower ? qMin(0.0f, height - gy - delta) : qMax(0.0f, delta - gy); + smoothVertices[index++].set(grx, gy, fillColor, width - grx - delta, dy); + smoothVertices[index++].set(glx, gy, fillColor, delta - glx, dy); + if (penWidth) { + smoothVertices[index++].set(grx, gy, borderColor, 0.49f * penWidth * s, -0.49f * penWidth * c); + smoothVertices[index++].set(glx, gy, borderColor, -0.49f * penWidth * s, -0.49f * penWidth * c); + } else { + dy = lower ? delta : -delta; + smoothVertices[index++].set(grx, gy, transparent, delta, dy); + smoothVertices[index++].set(glx, gy, transparent, -delta, dy); + } + } else { + vertices[index++].set(grx, gy, fillColor); + vertices[index++].set(glx, gy, fillColor); + if (penWidth) { + vertices[index++].set(grx, gy, borderColor); + vertices[index++].set(glx, gy, borderColor); + } + } + ++nextGradientStop; + } + + if (!stops.isEmpty()) { + if (nextGradientStop == 0) { + fillColor = colorToColor4ub(stops.at(0).second); + } else if (nextGradientStop == stops.size()) { + fillColor = colorToColor4ub(stops.last().second); + } else { + const QGradientStop &prev = stops.at(nextGradientStop - 1); + const QGradientStop &next = stops.at(nextGradientStop); + float t = (gradientPos - prev.first) / (next.first - prev.first); + fillColor = colorToColor4ub(prev.second) * (1 - t) + colorToColor4ub(next.second) * t; + } + } + + if (hasFill) { + indices[fillHead++] = index; + indices[fillHead++] = index + 1; + } + + if (penWidth) { + indices[--borderHead] = index + 4; + indices[--borderHead] = index + 2; + indices[borderTail++] = index + 3; + indices[borderTail++] = index + 5; + } + + if (m_antialiasing) { + indices[--innerAAHead] = index + 2; + indices[--innerAAHead] = index; + indices[innerAATail++] = index + 1; + indices[innerAATail++] = index + 3; + + float dy = part ? qMin(0.0f, height - y - delta) : qMax(0.0f, delta - y); + smoothVertices[index++].set(rx, y, fillColor, width - rx - delta, dy); + smoothVertices[index++].set(lx, y, fillColor, delta - lx, dy); + + dy = part ? delta : -delta; + if (penWidth) { + smoothVertices[index++].set(rx, y, borderColor, 0.49f * penWidth * s, -0.49f * penWidth * c); + smoothVertices[index++].set(lx, y, borderColor, -0.49f * penWidth * s, -0.49f * penWidth * c); + smoothVertices[index++].set(rX, Y, borderColor, -0.49f * penWidth * s, 0.49f * penWidth * c); + smoothVertices[index++].set(lX, Y, borderColor, 0.49f * penWidth * s, 0.49f * penWidth * c); + smoothVertices[index++].set(rX, Y, transparent, delta, dy); + smoothVertices[index++].set(lX, Y, transparent, -delta, dy); + + indices[--outerAAHead] = index - 2; + indices[--outerAAHead] = index - 4; + indices[outerAATail++] = index - 3; + indices[outerAATail++] = index - 1; + } else { + smoothVertices[index++].set(rx, y, transparent, delta, dy); + smoothVertices[index++].set(lx, y, transparent, -delta, dy); + } + } else { + vertices[index++].set(rx, y, fillColor); + vertices[index++].set(lx, y, fillColor); + if (penWidth) { + vertices[index++].set(rx, y, borderColor); + vertices[index++].set(lx, y, borderColor); + vertices[index++].set(rX, Y, borderColor); + vertices[index++].set(lX, Y, borderColor); + } + } + + py = y; + plx = lx; + prx = rx; + + // Rotate + qreal tmp = c; + c = c * cosStep - s * sinStep; + s = s * cosStep + tmp * sinStep; + } + } + Q_ASSERT(index == vertexCount); + + // Close the triangle strips. + if (m_antialiasing) { + indices[--innerAAHead] = indices[innerAATail - 1]; + indices[--innerAAHead] = indices[innerAATail - 2]; + Q_ASSERT(innerAATail <= indexCount); + } + if (penWidth) { + indices[--borderHead] = indices[borderTail - 1]; + indices[--borderHead] = indices[borderTail - 2]; + Q_ASSERT(borderTail <= indexCount); + } + if (m_antialiasing && penWidth) { + indices[--outerAAHead] = indices[outerAATail - 1]; + indices[--outerAAHead] = indices[outerAATail - 2]; + Q_ASSERT(outerAATail == indexCount); + } + } else { + // Straight corners. + QRectF innerRect = m_rect; + QRectF outerRect = m_rect; + + if (penWidth) + innerRect.adjust(1.0f * penWidth, 1.0f * penWidth, -1.0f * penWidth, -1.0f * penWidth); + + float delta = qMin(width, height) * 0.5f; + int innerVertexCount = 4 + gradientIntersections * 2; + int outerVertexCount = 4; + int vertexCount = innerVertexCount; + if (m_antialiasing || penWidth) + vertexCount += innerVertexCount; + if (penWidth) + vertexCount += outerVertexCount; + if (m_antialiasing && penWidth) + vertexCount += outerVertexCount; + + int fillIndexCount = innerVertexCount; + int innerAAIndexCount = innerVertexCount * 2 + 2; + int borderIndexCount = innerVertexCount * 2 + 2; + int outerAAIndexCount = outerVertexCount * 2 + 2; + int indexCount = 0; + int fillHead = 0; + int innerAAHead = 0; + int innerAATail = 0; + int borderHead = 0; + int borderTail = 0; + int outerAAHead = 0; + int outerAATail = 0; + bool hasFill = m_color.alpha() > 0 || !stops.isEmpty(); + if (hasFill) + indexCount += fillIndexCount; + if (m_antialiasing) { + innerAATail = innerAAHead = indexCount + (innerAAIndexCount >> 1) + 1; + indexCount += innerAAIndexCount; + } + if (penWidth) { + borderTail = borderHead = indexCount + (borderIndexCount >> 1) + 1; + indexCount += borderIndexCount; + } + if (m_antialiasing && penWidth) { + outerAATail = outerAAHead = indexCount + (outerAAIndexCount >> 1) + 1; + indexCount += outerAAIndexCount; + } + + g->allocate(vertexCount, indexCount); + vertices = reinterpret_cast<Vertex *>(g->vertexData()); + memset(vertices, 0, vertexCount * vertexStride); + quint16 *indices = g->indexDataAsUShort(); + quint16 index = 0; + + float lx = innerRect.left(); + float rx = innerRect.right(); + float lX = outerRect.left(); + float rX = outerRect.right(); + + for (int part = -1; part <= 1; part += 2) { + float y = (part == 1 ? innerRect.bottom() : innerRect.top()); + float Y = (part == 1 ? outerRect.bottom() : outerRect.top()); + gradientPos = (y - innerRect.top() + penWidth) / height; + + while (nextGradientStop <= lastGradientStop && stops.at(nextGradientStop).first <= gradientPos) { + // Insert vertices at gradient stops. + float gy = (innerRect.top() - penWidth) + stops.at(nextGradientStop).first * height; + + fillColor = colorToColor4ub(stops.at(nextGradientStop).second); + + if (hasFill) { + indices[fillHead++] = index; + indices[fillHead++] = index + 1; + } + + if (penWidth) { + --borderHead; + indices[borderHead] = indices[borderHead + 2]; + indices[--borderHead] = index + 2; + indices[borderTail++] = index + 3; + indices[borderTail] = indices[borderTail - 2]; + ++borderTail; + } + + if (m_antialiasing) { + indices[--innerAAHead] = index + 2; + indices[--innerAAHead] = index; + indices[innerAATail++] = index + 1; + indices[innerAATail++] = index + 3; + + bool lower = stops.at(nextGradientStop).first > 0.5f; + float dy = lower ? qMin(0.0f, height - gy - delta) : qMax(0.0f, delta - gy); + smoothVertices[index++].set(rx, gy, fillColor, width - rx - delta, dy); + smoothVertices[index++].set(lx, gy, fillColor, delta - lx, dy); + if (penWidth) { + smoothVertices[index++].set(rx, gy, borderColor, 0.49f * penWidth, (lower ? 0.49f : -0.49f) * penWidth); + smoothVertices[index++].set(lx, gy, borderColor, -0.49f * penWidth, (lower ? 0.49f : -0.49f) * penWidth); + } else { + smoothVertices[index++].set(rx, gy, transparent, delta, lower ? delta : -delta); + smoothVertices[index++].set(lx, gy, transparent, -delta, lower ? delta : -delta); + } + } else { + vertices[index++].set(rx, gy, fillColor); + vertices[index++].set(lx, gy, fillColor); + if (penWidth) { + vertices[index++].set(rx, gy, borderColor); + vertices[index++].set(lx, gy, borderColor); + } + } + ++nextGradientStop; + } + + if (!stops.isEmpty()) { + if (nextGradientStop == 0) { + fillColor = colorToColor4ub(stops.at(0).second); + } else if (nextGradientStop == stops.size()) { + fillColor = colorToColor4ub(stops.last().second); + } else { + const QGradientStop &prev = stops.at(nextGradientStop - 1); + const QGradientStop &next = stops.at(nextGradientStop); + float t = (gradientPos - prev.first) / (next.first - prev.first); + fillColor = colorToColor4ub(prev.second) * (1 - t) + colorToColor4ub(next.second) * t; + } + } + + if (hasFill) { + indices[fillHead++] = index; + indices[fillHead++] = index + 1; + } + + if (penWidth) { + indices[--borderHead] = index + 4; + indices[--borderHead] = index + 2; + indices[borderTail++] = index + 3; + indices[borderTail++] = index + 5; + } + + if (m_antialiasing) { + indices[--innerAAHead] = index + 2; + indices[--innerAAHead] = index; + indices[innerAATail++] = index + 1; + indices[innerAATail++] = index + 3; + + float dy = part == 1 ? qMin(0.0f, height - y - delta) : qMax(0.0f, delta - y); + smoothVertices[index++].set(rx, y, fillColor, width - rx - delta, dy); + smoothVertices[index++].set(lx, y, fillColor, delta - lx, dy); + + if (penWidth) { + smoothVertices[index++].set(rx, y, borderColor, 0.49f * penWidth, 0.49f * penWidth * part); + smoothVertices[index++].set(lx, y, borderColor, -0.49f * penWidth, 0.49f * penWidth * part); + smoothVertices[index++].set(rX, Y, borderColor, -0.49f * penWidth, -0.49f * penWidth * part); + smoothVertices[index++].set(lX, Y, borderColor, 0.49f * penWidth, -0.49f * penWidth * part); + smoothVertices[index++].set(rX, Y, transparent, delta, delta * part); + smoothVertices[index++].set(lX, Y, transparent, -delta, delta * part); + + indices[--outerAAHead] = index - 2; + indices[--outerAAHead] = index - 4; + indices[outerAATail++] = index - 3; + indices[outerAATail++] = index - 1; + } else { + smoothVertices[index++].set(rx, y, transparent, delta, delta * part); + smoothVertices[index++].set(lx, y, transparent, -delta, delta * part); + } + } else { + vertices[index++].set(rx, y, fillColor); + vertices[index++].set(lx, y, fillColor); + if (penWidth) { + vertices[index++].set(rx, y, borderColor); + vertices[index++].set(lx, y, borderColor); + vertices[index++].set(rX, Y, borderColor); + vertices[index++].set(lX, Y, borderColor); + } + } + } + Q_ASSERT(index == vertexCount); + + // Close the triangle strips. + if (m_antialiasing) { + indices[--innerAAHead] = indices[innerAATail - 1]; + indices[--innerAAHead] = indices[innerAATail - 2]; + Q_ASSERT(innerAATail <= indexCount); + } + if (penWidth) { + indices[--borderHead] = indices[borderTail - 1]; + indices[--borderHead] = indices[borderTail - 2]; + Q_ASSERT(borderTail <= indexCount); + } + if (m_antialiasing && penWidth) { + indices[--outerAAHead] = indices[outerAATail - 1]; + indices[--outerAAHead] = indices[outerAATail - 2]; + Q_ASSERT(outerAATail == indexCount); + } + } +} + +QT_END_NAMESPACE |