Revision control
++ // 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
++
++ #include "qsgninepatchnode.h"
++
++ QT_BEGIN_NAMESPACE
++
++ /*!
++ \class QSGNinePatchNode
++ \inmodule QtQuick
++ \since 5.8
++ \internal
++ */
++
++ /*!
++ \fn void QSGNinePatchNode::setTexture(QSGTexture *texture)
++ \internal
++ */
++
++ /*!
++ \fn void QSGNinePatchNode::setBounds(const QRectF &bounds)
++ \internal
++ */
++
++ /*!
++ \fn void QSGNinePatchNode::setDevicePixelRatio(qreal ratio)
++ \internal
++ */
++
++ /*!
++ \fn void QSGNinePatchNode::setPadding(qreal left, qreal top, qreal right, qreal bottom)
++ \internal
++ */
++
++
++ /*!
++ \fn void QSGNinePatchNode::update()
++ \internal
++ */
++
++ void QSGNinePatchNode::rebuildGeometry(QSGTexture *texture, QSGGeometry *geometry, const QVector4D &padding,
++ const QRectF &bounds, qreal dpr)
++ {
++ if (padding.x() <= 0 && padding.y() <= 0 && padding.z() <= 0 && padding.w() <= 0) {
++ geometry->allocate(4, 0);
++ QSGGeometry::updateTexturedRectGeometry(geometry, bounds, texture->normalizedTextureSubRect());
++ return;
++ }
++
++ QRectF tc = texture->normalizedTextureSubRect();
++ QSize ts = texture->textureSize();
++ ts.setHeight(ts.height() / dpr);
++ ts.setWidth(ts.width() / dpr);
++
++ qreal invtw = tc.width() / ts.width();
++ qreal invth = tc.height() / ts.height();
++
++ struct Coord { qreal p; qreal t; };
++ Coord cx[4] = { { bounds.left(), tc.left() },
++ { bounds.left() + padding.x(), tc.left() + padding.x() * invtw },
++ { bounds.right() - padding.z(), tc.right() - padding.z() * invtw },
++ { bounds.right(), tc.right() }
++ };
++ Coord cy[4] = { { bounds.top(), tc.top() },
++ { bounds.top() + padding.y(), tc.top() + padding.y() * invth },
++ { bounds.bottom() - padding.w(), tc.bottom() - padding.w() * invth },
++ { bounds.bottom(), tc.bottom() }
++ };
++
++ geometry->allocate(16, 28);
++ QSGGeometry::TexturedPoint2D *v = geometry->vertexDataAsTexturedPoint2D();
++ for (int y = 0; y < 4; ++y) {
++ for (int x = 0; x < 4; ++x) {
++ v->set(cx[x].p, cy[y].p, cx[x].t, cy[y].t);
++ ++v;
++ }
++ }
++
++ quint16 *i = geometry->indexDataAsUShort();
++ for (int r = 0; r < 3; ++r) {
++ if (r > 0)
++ *i++ = 4 * r;
++ for (int c = 0; c < 4; ++c) {
++ i[0] = 4 * r + c;
++ i[1] = 4 * r + c + 4;
++ i += 2;
++ }
++ if (r < 2)
++ *i++ = 4 * r + 3 + 4;
++ }
++ }
++
++ QT_END_NAMESPACE