void QQuickTextNode::addImage(const QRectF &rect, const QImage &image)
{
QSGRenderContext *sg = QQuickItemPrivate::get(m_ownerElement)->sceneGraphRenderContext();
QSGImageNode *node = sg->sceneGraphContext()->createImageNode();
QSGTexture *texture = sg->createTexture(image);
m_textures.append(texture);
node->setTargetRect(rect);
node->setInnerTargetRect(rect);
node->setTexture(texture);
appendChildNode(node);
node->update();
}
QSGNode *QQuickImage::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *)
{
Q_D(QQuickImage);
QSGTexture *texture = d->sceneGraphRenderContext()->textureForFactory(d->pix.textureFactory(), window());
// Copy over the current texture state into the texture provider...
if (d->provider) {
d->provider->m_smooth = d->smooth;
d->provider->m_mipmap = d->mipmap;
d->provider->updateTexture(texture);
}
if (!texture || width() <= 0 || height() <= 0) {
delete oldNode;
return 0;
}
QSGImageNode *node = static_cast<QSGImageNode *>(oldNode);
if (!node) {
d->pixmapChanged = true;
node = d->sceneGraphContext()->createImageNode();
}
QRectF targetRect;
QRectF sourceRect;
QSGTexture::WrapMode hWrap = QSGTexture::ClampToEdge;
QSGTexture::WrapMode vWrap = QSGTexture::ClampToEdge;
qreal pixWidth = (d->fillMode == PreserveAspectFit) ? d->paintedWidth : d->pix.width() / d->devicePixelRatio;
qreal pixHeight = (d->fillMode == PreserveAspectFit) ? d->paintedHeight : d->pix.height() / d->devicePixelRatio;
int xOffset = 0;
if (d->hAlign == QQuickImage::AlignHCenter)
xOffset = qCeil((width() - pixWidth) / 2.);
else if (d->hAlign == QQuickImage::AlignRight)
xOffset = qCeil(width() - pixWidth);
int yOffset = 0;
if (d->vAlign == QQuickImage::AlignVCenter)
yOffset = qCeil((height() - pixHeight) / 2.);
else if (d->vAlign == QQuickImage::AlignBottom)
yOffset = qCeil(height() - pixHeight);
switch (d->fillMode) {
default:
case Stretch:
targetRect = QRectF(0, 0, width(), height());
sourceRect = d->pix.rect();
break;
case PreserveAspectFit:
targetRect = QRectF(xOffset, yOffset, d->paintedWidth, d->paintedHeight);
sourceRect = d->pix.rect();
break;
case PreserveAspectCrop: {
targetRect = QRect(0, 0, width(), height());
qreal wscale = width() / qreal(d->pix.width());
qreal hscale = height() / qreal(d->pix.height());
if (wscale > hscale) {
int src = (hscale / wscale) * qreal(d->pix.height());
int y = 0;
if (d->vAlign == QQuickImage::AlignVCenter)
y = qCeil((d->pix.height() - src) / 2.);
else if (d->vAlign == QQuickImage::AlignBottom)
y = qCeil(d->pix.height() - src);
sourceRect = QRectF(0, y, d->pix.width(), src);
} else {
int src = (wscale / hscale) * qreal(d->pix.width());
int x = 0;
if (d->hAlign == QQuickImage::AlignHCenter)
x = qCeil((d->pix.width() - src) / 2.);
else if (d->hAlign == QQuickImage::AlignRight)
x = qCeil(d->pix.width() - src);
sourceRect = QRectF(x, 0, src, d->pix.height());
}
}
break;
case Tile:
targetRect = QRectF(0, 0, width(), height());
sourceRect = QRectF(-xOffset, -yOffset, width(), height());
hWrap = QSGTexture::Repeat;
vWrap = QSGTexture::Repeat;
break;
case TileHorizontally:
targetRect = QRectF(0, 0, width(), height());
sourceRect = QRectF(-xOffset, 0, width(), d->pix.height());
hWrap = QSGTexture::Repeat;
break;
case TileVertically:
targetRect = QRectF(0, 0, width(), height());
sourceRect = QRectF(0, -yOffset, d->pix.width(), height());
vWrap = QSGTexture::Repeat;
break;
case Pad:
qreal w = qMin(qreal(d->pix.width()), width());
qreal h = qMin(qreal(d->pix.height()), height());
qreal x = (d->pix.width() > width()) ? -xOffset : 0;
qreal y = (d->pix.height() > height()) ? -yOffset : 0;
targetRect = QRectF(x + xOffset, y + yOffset, w, h);
sourceRect = QRectF(x, y, w, h);
break;
};
qreal nsWidth = (hWrap == QSGTexture::Repeat) ? d->pix.width() / d->devicePixelRatio : d->pix.width();
qreal nsHeight = (vWrap == QSGTexture::Repeat) ? d->pix.height() / d->devicePixelRatio : d->pix.height();
QRectF nsrect(sourceRect.x() / nsWidth,
sourceRect.y() / nsHeight,
sourceRect.width() / nsWidth,
sourceRect.height() / nsHeight);
if (targetRect.isEmpty()
|| !qIsFinite(targetRect.width()) || !qIsFinite(targetRect.height())
|| nsrect.isEmpty()
|| !qIsFinite(nsrect.width()) || !qIsFinite(nsrect.height())) {
delete node;
return 0;
}
if (d->pixmapChanged) {
// force update the texture in the node to trigger reconstruction of
// geometry and the likes when a atlas segment has changed.
if (texture->isAtlasTexture() && (hWrap == QSGTexture::Repeat || vWrap == QSGTexture::Repeat || d->mipmap))
node->setTexture(texture->removedFromAtlas());
else
node->setTexture(texture);
d->pixmapChanged = false;
}
node->setMipmapFiltering(d->mipmap ? QSGTexture::Linear : QSGTexture::None);
node->setHorizontalWrapMode(hWrap);
node->setVerticalWrapMode(vWrap);
node->setFiltering(d->smooth ? QSGTexture::Linear : QSGTexture::Nearest);
node->setTargetRect(targetRect);
node->setInnerTargetRect(targetRect);
node->setSubSourceRect(nsrect);
node->setMirror(d->mirror);
node->setAntialiasing(d->antialiasing);
node->update();
return node;
}