SVGPaintServer LayoutSVGResourceGradient::preparePaintServer(
const LayoutObject& object) {
clearInvalidationMask();
// Be sure to synchronize all SVG properties on the gradientElement _before_
// processing any further. Otherwhise the call to collectGradientAttributes()
// in createTileImage(), may cause the SVG DOM property synchronization to
// kick in, which causes removeAllClientsFromCache() to be called, which in
// turn deletes our GradientData object! Leaving out the line below will cause
// svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
SVGGradientElement* gradientElement = toSVGGradientElement(element());
if (!gradientElement)
return SVGPaintServer::invalid();
if (m_shouldCollectGradientAttributes) {
gradientElement->synchronizeAnimatedSVGAttribute(anyQName());
if (!collectGradientAttributes(gradientElement))
return SVGPaintServer::invalid();
m_shouldCollectGradientAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height
// and objectBoundingBox is specified, then the given effect (e.g. a gradient
// or a filter) will be ignored.
FloatRect objectBoundingBox = object.objectBoundingBox();
if (gradientUnits() == SVGUnitTypes::kSvgUnitTypeObjectboundingbox &&
objectBoundingBox.isEmpty())
return SVGPaintServer::invalid();
std::unique_ptr<GradientData>& gradientData =
m_gradientMap.add(&object, nullptr).storedValue->value;
if (!gradientData)
gradientData = WTF::wrapUnique(new GradientData);
// Create gradient object
if (!gradientData->gradient) {
gradientData->gradient = buildGradient();
// We want the text bounding box applied to the gradient space transform
// now, so the gradient shader can use it.
if (gradientUnits() == SVGUnitTypes::kSvgUnitTypeObjectboundingbox &&
!objectBoundingBox.isEmpty()) {
gradientData->userspaceTransform.translate(objectBoundingBox.x(),
objectBoundingBox.y());
gradientData->userspaceTransform.scaleNonUniform(
objectBoundingBox.width(), objectBoundingBox.height());
}
AffineTransform gradientTransform = calculateGradientTransform();
gradientData->userspaceTransform *= gradientTransform;
}
if (!gradientData->gradient)
return SVGPaintServer::invalid();
return SVGPaintServer(gradientData->gradient,
gradientData->userspaceTransform);
}
/*! \todo split param update from graphic creation
*/
void gradientDialog::slotUpdate()
{
QString s;
QPalette palette;
QBrush brush;
gParam.direction=(270+dial->value())%360;
gParam.pos1=pos1SpinBox->value();
gParam.pos2=pos2SpinBox->value();
gParam.pos3=pos3SpinBox->value();
gParam.pos4=pos4SpinBox->value();
if(noGradientButton->isChecked()) gParam.type=sgradientParam::NONE;
else if (linearGradientButton->isChecked()) gParam.type=sgradientParam::LINEAR;
else if (radialGradientButton->isChecked()) gParam.type=sgradientParam::RADIAL;
else if (conicalGradientButton->isChecked()) gParam.type=sgradientParam::CONICAL;
s=gParam.color1.name();
color1Button->setStyleSheet("background-color: "+s+"; border-style: outset; border-width: 2px;border-radius: 10px; border-color: beige; padding: 6px");
s=gParam.color2.name();
color2Button->setStyleSheet("background-color: "+s+"; border-style: outset; border-width: 2px;border-radius: 10px; border-color: beige; padding: 6px");
s=gParam.color3.name();
color3Button->setStyleSheet("background-color: "+s+"; border-style: outset; border-width: 2px;border-radius: 10px; border-color: beige; padding: 6px");
s=gParam.color4.name();
color4Button->setStyleSheet("background-color: "+s+"; border-style: outset; border-width: 2px;border-radius: 10px; border-color: beige; padding: 6px");
// brush.setStyle(Qt::SolidPattern);
// brush.setColor(gParam.color1);
// palette.setBrush(QPalette::Active, QPalette::Button, brush);
// color1Button->setPalette(palette);
// brush.setColor(gParam.color2);11
// palette.setBrush(QPalette::Active, QPalette::Button, brush);
// color2Button->setPalette(palette);
// brush.setColor(gParam.color3);
// palette.setBrush(QPalette::Active, QPalette::Button, brush);
// color3Button->setPalette(palette);
// brush.setColor(gParam.color4);
// palette.setBrush(QPalette::Active, QPalette::Button, brush);
// color4Button->setPalette(palette);
brush.setStyle(Qt::SolidPattern);
if(gParam.type!=sgradientParam::NONE)
{
QBrush br(buildGradient(gParam,previewLabel->rect()));
palette.setBrush(QPalette::Active, QPalette::Base, br);
}
else
{
QBrush br(gParam.color1);
palette.setBrush(QPalette::Active, QPalette::Base, br);
}
previewLabel->setPalette(palette);
}
bool RenderSVGResourceGradient::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(object);
ASSERT(style);
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
// Be sure to synchronize all SVG properties on the gradientElement _before_ processing any further.
// Otherwhise the call to collectGradientAttributes() in createTileImage(), may cause the SVG DOM property
// synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
// GradientData object! Leaving out the line below will cause svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
SVGGradientElement* gradientElement = static_cast<SVGGradientElement*>(node());
if (!gradientElement)
return false;
if (m_shouldCollectGradientAttributes) {
gradientElement->synchronizeAnimatedSVGAttribute(anyQName());
if (!collectGradientAttributes(gradientElement))
return false;
m_shouldCollectGradientAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object->objectBoundingBox();
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
return false;
OwnPtr<GradientData>& gradientData = m_gradientMap.add(object, nullptr).iterator->value;
if (!gradientData)
gradientData = adoptPtr(new GradientData);
bool isPaintingText = resourceMode & ApplyToTextMode;
// Create gradient object
if (!gradientData->gradient) {
buildGradient(gradientData.get());
// CG platforms will handle the gradient space transform for text after applying the
// resource, so don't apply it here. For non-CG platforms, we want the text bounding
// box applied to the gradient space transform now, so the gradient shader can use it.
#if USE(CG)
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && !objectBoundingBox.isEmpty() && !isPaintingText) {
#else
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && !objectBoundingBox.isEmpty()) {
#endif
gradientData->userspaceTransform.translate(objectBoundingBox.x(), objectBoundingBox.y());
gradientData->userspaceTransform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
}
AffineTransform gradientTransform;
calculateGradientTransform(gradientTransform);
gradientData->userspaceTransform *= gradientTransform;
if (isPaintingText) {
// Depending on font scaling factor, we may need to rescale the gradient here since
// text painting removes the scale factor from the context.
AffineTransform additionalTextTransform;
if (shouldTransformOnTextPainting(object, additionalTextTransform))
gradientData->userspaceTransform *= additionalTextTransform;
}
gradientData->gradient->setGradientSpaceTransform(gradientData->userspaceTransform);
}
if (!gradientData->gradient)
return false;
// Draw gradient
context->save();
if (isPaintingText) {
#if USE(CG)
if (!createMaskAndSwapContextForTextGradient(context, m_savedContext, m_imageBuffer, object)) {
context->restore();
return false;
}
#endif
context->setTextDrawingMode(resourceMode & ApplyToFillMode ? TextModeFill : TextModeStroke);
}
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
if (resourceMode & ApplyToFillMode) {
context->setAlpha(svgStyle->fillOpacity());
context->setFillGradient(gradientData->gradient);
context->setFillRule(svgStyle->fillRule());
} else if (resourceMode & ApplyToStrokeMode) {
if (svgStyle->vectorEffect() == VE_NON_SCALING_STROKE)
gradientData->gradient->setGradientSpaceTransform(transformOnNonScalingStroke(object, gradientData->userspaceTransform));
context->setAlpha(svgStyle->strokeOpacity());
context->setStrokeGradient(gradientData->gradient);
SVGRenderSupport::applyStrokeStyleToContext(context, style, object);
}
return true;
}
void RenderSVGResourceGradient::postApplyResource(RenderObject* object, GraphicsContext*& context, unsigned short resourceMode, const Path* path, const RenderSVGShape* shape)
{
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
if (resourceMode & ApplyToTextMode) {
#if USE(CG)
// CG requires special handling for gradient on text
GradientData* gradientData;
if (m_savedContext && (gradientData = m_gradientMap.get(object))) {
// Restore on-screen drawing context
context = m_savedContext;
m_savedContext = 0;
AffineTransform gradientTransform;
calculateGradientTransform(gradientTransform);
FloatRect targetRect;
gradientData->gradient->setGradientSpaceTransform(clipToTextMask(context, m_imageBuffer, targetRect, object, gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX, gradientTransform));
context->setFillGradient(gradientData->gradient);
context->fillRect(targetRect);
m_imageBuffer.clear();
}
#else
UNUSED_PARAM(object);
#endif
} else {
if (resourceMode & ApplyToFillMode) {
if (path)
context->fillPath(*path);
else if (shape)
shape->fillShape(context);
}
if (resourceMode & ApplyToStrokeMode) {
if (path)
context->strokePath(*path);
else if (shape)
shape->strokeShape(context);
}
}
context->restore();
}
bool RenderSVGResourceGradient::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(object);
ASSERT(style);
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
clearInvalidationMask();
// Be sure to synchronize all SVG properties on the gradientElement _before_ processing any further.
// Otherwhise the call to collectGradientAttributes() in createTileImage(), may cause the SVG DOM property
// synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
// GradientData object! Leaving out the line below will cause svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
SVGGradientElement* gradientElement = toSVGGradientElement(element());
if (!gradientElement)
return false;
if (m_shouldCollectGradientAttributes) {
gradientElement->synchronizeAnimatedSVGAttribute(anyQName());
if (!collectGradientAttributes(gradientElement))
return false;
m_shouldCollectGradientAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object->objectBoundingBox();
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
return false;
OwnPtr<GradientData>& gradientData = m_gradientMap.add(object, nullptr).storedValue->value;
if (!gradientData)
gradientData = adoptPtr(new GradientData);
// Create gradient object
if (!gradientData->gradient) {
buildGradient(gradientData.get());
// We want the text bounding box applied to the gradient space transform now, so the gradient shader can use it.
if (gradientUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && !objectBoundingBox.isEmpty()) {
gradientData->userspaceTransform.translate(objectBoundingBox.x(), objectBoundingBox.y());
gradientData->userspaceTransform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
}
AffineTransform gradientTransform;
calculateGradientTransform(gradientTransform);
gradientData->userspaceTransform *= gradientTransform;
}
if (!gradientData->gradient)
return false;
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
AffineTransform computedGradientSpaceTransform = computeResourceSpaceTransform(object, gradientData->userspaceTransform, svgStyle, resourceMode);
gradientData->gradient->setGradientSpaceTransform(computedGradientSpaceTransform);
// Draw gradient
context->save();
if (resourceMode & ApplyToTextMode)
context->setTextDrawingMode(resourceMode & ApplyToFillMode ? TextModeFill : TextModeStroke);
if (resourceMode & ApplyToFillMode) {
context->setAlphaAsFloat(svgStyle->fillOpacity());
context->setFillGradient(gradientData->gradient);
context->setFillRule(svgStyle->fillRule());
} else if (resourceMode & ApplyToStrokeMode) {
context->setAlphaAsFloat(svgStyle->strokeOpacity());
context->setStrokeGradient(gradientData->gradient);
SVGRenderSupport::applyStrokeStyleToContext(context, style, object);
}
return true;
}
bool RenderSVGResourceGradient::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(object);
ASSERT(style);
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
// Be sure to synchronize all SVG properties on the gradientElement _before_ processing any further.
// Otherwhise the call to collectGradientAttributes() in createTileImage(), may cause the SVG DOM property
// synchronization to kick in, which causes invalidateClients() to be called, which in turn deletes our
// GradientData object! Leaving out the line below will cause svg/dynamic-updates/SVG*GradientElement-svgdom* to crash.
SVGGradientElement* gradientElement = static_cast<SVGGradientElement*>(node());
if (!gradientElement)
return false;
gradientElement->updateAnimatedSVGAttribute(anyQName());
if (!m_gradient.contains(object))
m_gradient.set(object, new GradientData);
GradientData* gradientData = m_gradient.get(object);
// Create gradient object
if (!gradientData->gradient)
buildGradient(gradientData, gradientElement);
if (!gradientData->gradient)
return false;
// Draw gradient
context->save();
bool isPaintingText = resourceMode & ApplyToTextMode;
if (isPaintingText) {
#if PLATFORM(CG)
if (!createMaskAndSwapContextForTextGradient(context, m_savedContext, m_imageBuffer, object)) {
context->restore();
return false;
}
#endif
context->setTextDrawingMode(resourceMode & ApplyToFillMode ? cTextFill : cTextStroke);
}
AffineTransform transform;
// CG platforms will handle the gradient space transform for text after applying the
// resource, so don't apply it here. For non-CG platforms, we want the text bounding
// box applied to the gradient space transform now, so the gradient shader can use it.
#if PLATFORM(CG)
if (gradientData->boundingBoxMode && !isPaintingText) {
#else
if (gradientData->boundingBoxMode) {
#endif
FloatRect objectBoundingBox = object->objectBoundingBox();
transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
}
transform.multiply(gradientData->transform);
gradientData->gradient->setGradientSpaceTransform(transform);
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
if (resourceMode & ApplyToFillMode) {
context->setAlpha(svgStyle->fillOpacity());
context->setFillGradient(gradientData->gradient);
context->setFillRule(svgStyle->fillRule());
} else if (resourceMode & ApplyToStrokeMode) {
context->setAlpha(svgStyle->strokeOpacity());
context->setStrokeGradient(gradientData->gradient);
applyStrokeStyleToContext(context, style, object);
}
return true;
}
void RenderSVGResourceGradient::postApplyResource(RenderObject* object, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
if (resourceMode & ApplyToTextMode) {
#if PLATFORM(CG)
// CG requires special handling for gradient on text
if (m_savedContext && m_gradient.contains(object)) {
GradientData* gradientData = m_gradient.get(object);
// Restore on-screen drawing context
context = m_savedContext;
m_savedContext = 0;
gradientData->gradient->setGradientSpaceTransform(clipToTextMask(context, m_imageBuffer, object, gradientData));
context->setFillGradient(gradientData->gradient);
const RenderObject* textRootBlock = findTextRootObject(object);
context->fillRect(textRootBlock->repaintRectInLocalCoordinates());
m_imageBuffer.clear();
}
#else
UNUSED_PARAM(object);
#endif
} else {
if (resourceMode & ApplyToFillMode)
context->fillPath();
else if (resourceMode & ApplyToStrokeMode)
context->strokePath();
}
context->restore();
}
