| /* |
| * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org> |
| * Copyright (C) 2009 Dirk Schulze <krit@webkit.org> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "third_party/blink/renderer/core/svg/svg_filter_primitive_standard_attributes.h" |
| |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_filter_primitive.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_container.h" |
| #include "third_party/blink/renderer/core/svg/graphics/filters/svg_filter_builder.h" |
| #include "third_party/blink/renderer/core/svg/svg_animated_length.h" |
| #include "third_party/blink/renderer/core/svg/svg_animated_string.h" |
| #include "third_party/blink/renderer/core/svg/svg_filter_element.h" |
| #include "third_party/blink/renderer/core/svg/svg_length.h" |
| #include "third_party/blink/renderer/core/svg_names.h" |
| #include "third_party/blink/renderer/platform/graphics/filters/filter.h" |
| #include "third_party/blink/renderer/platform/graphics/filters/filter_effect.h" |
| #include "third_party/blink/renderer/platform/heap/garbage_collected.h" |
| |
| namespace blink { |
| |
| SVGFilterPrimitiveStandardAttributes::SVGFilterPrimitiveStandardAttributes( |
| const QualifiedName& tag_name, |
| Document& document) |
| : SVGElement(tag_name, document), |
| // Spec: If the x/y attribute is not specified, the effect is as if a |
| // value of "0%" were specified. |
| x_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kXAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kPercent0)), |
| y_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kYAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kPercent0)), |
| // Spec: If the width/height attribute is not specified, the effect is as |
| // if a value of "100%" were specified. |
| width_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kWidthAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kPercent100)), |
| height_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kHeightAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kPercent100)), |
| result_(MakeGarbageCollected<SVGAnimatedString>(this, |
| svg_names::kResultAttr)) { |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::Trace(Visitor* visitor) const { |
| visitor->Trace(x_); |
| visitor->Trace(y_); |
| visitor->Trace(width_); |
| visitor->Trace(height_); |
| visitor->Trace(result_); |
| SVGElement::Trace(visitor); |
| } |
| |
| bool SVGFilterPrimitiveStandardAttributes::SetFilterEffectAttribute( |
| FilterEffect* effect, |
| const QualifiedName& attr_name) { |
| DCHECK(attr_name == svg_names::kColorInterpolationFiltersAttr); |
| DCHECK(GetLayoutObject()); |
| EColorInterpolation color_interpolation = |
| GetLayoutObject()->StyleRef().ColorInterpolationFilters(); |
| InterpolationSpace resolved_interpolation_space = |
| SVGFilterBuilder::ResolveInterpolationSpace(color_interpolation); |
| if (resolved_interpolation_space == effect->OperatingInterpolationSpace()) |
| return false; |
| effect->SetOperatingInterpolationSpace(resolved_interpolation_space); |
| return true; |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::SvgAttributeChanged( |
| const SvgAttributeChangedParams& params) { |
| const QualifiedName& attr_name = params.name; |
| if (attr_name == svg_names::kXAttr || attr_name == svg_names::kYAttr || |
| attr_name == svg_names::kWidthAttr || |
| attr_name == svg_names::kHeightAttr || |
| attr_name == svg_names::kResultAttr) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| Invalidate(); |
| return; |
| } |
| |
| SVGElement::SvgAttributeChanged(params); |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::ChildrenChanged( |
| const ChildrenChange& change) { |
| SVGElement::ChildrenChanged(change); |
| |
| if (!change.ByParser()) |
| Invalidate(); |
| } |
| |
| static gfx::RectF DefaultFilterPrimitiveSubregion(FilterEffect* filter_effect) { |
| // https://drafts.fxtf.org/filter-effects/#FilterPrimitiveSubRegion |
| DCHECK(filter_effect->GetFilter()); |
| |
| // <feTurbulence>, <feFlood> and <feImage> don't have input effects, so use |
| // the filter region as default subregion. <feTile> does have an input |
| // reference, but due to its function (and special-cases) its default |
| // resolves to the filter region. |
| if (filter_effect->GetFilterEffectType() == kFilterEffectTypeTile || |
| !filter_effect->NumberOfEffectInputs()) |
| return filter_effect->GetFilter()->FilterRegion(); |
| |
| // "x, y, width and height default to the union (i.e., tightest fitting |
| // bounding box) of the subregions defined for all referenced nodes." |
| gfx::RectF subregion_union; |
| for (const auto& input_effect : filter_effect->InputEffects()) { |
| // "If ... one or more of the referenced nodes is a standard input |
| // ... the default subregion is 0%, 0%, 100%, 100%, where as a |
| // special-case the percentages are relative to the dimensions of the |
| // filter region..." |
| if (input_effect->GetFilterEffectType() == kFilterEffectTypeSourceInput) |
| return filter_effect->GetFilter()->FilterRegion(); |
| subregion_union.Union(input_effect->FilterPrimitiveSubregion()); |
| } |
| return subregion_union; |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::SetStandardAttributes( |
| FilterEffect* filter_effect, |
| SVGUnitTypes::SVGUnitType primitive_units, |
| const gfx::RectF& reference_box) const { |
| DCHECK(filter_effect); |
| |
| gfx::RectF subregion = DefaultFilterPrimitiveSubregion(filter_effect); |
| gfx::RectF primitive_boundaries = |
| LayoutSVGResourceContainer::ResolveRectangle(*this, primitive_units, |
| reference_box); |
| |
| if (x()->IsSpecified()) |
| subregion.set_x(primitive_boundaries.x()); |
| if (y()->IsSpecified()) |
| subregion.set_y(primitive_boundaries.y()); |
| if (width()->IsSpecified()) |
| subregion.set_width(primitive_boundaries.width()); |
| if (height()->IsSpecified()) |
| subregion.set_height(primitive_boundaries.height()); |
| |
| filter_effect->SetFilterPrimitiveSubregion(subregion); |
| } |
| |
| LayoutObject* SVGFilterPrimitiveStandardAttributes::CreateLayoutObject( |
| const ComputedStyle&) { |
| return MakeGarbageCollected<LayoutSVGFilterPrimitive>(this); |
| } |
| |
| bool SVGFilterPrimitiveStandardAttributes::LayoutObjectIsNeeded( |
| const DisplayStyle& style) const { |
| if (IsA<SVGFilterElement>(parentNode())) |
| return SVGElement::LayoutObjectIsNeeded(style); |
| |
| return false; |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::Invalidate() { |
| if (auto* filter = DynamicTo<SVGFilterElement>(parentElement())) |
| filter->InvalidateFilterChain(); |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::PrimitiveAttributeChanged( |
| const QualifiedName& attribute) { |
| if (auto* filter = DynamicTo<SVGFilterElement>(parentElement())) |
| filter->PrimitiveAttributeChanged(*this, attribute); |
| } |
| |
| void InvalidateFilterPrimitiveParent(SVGElement& element) { |
| auto* svg_parent = |
| DynamicTo<SVGFilterPrimitiveStandardAttributes>(element.parentElement()); |
| if (!svg_parent) |
| return; |
| svg_parent->Invalidate(); |
| } |
| |
| SVGAnimatedPropertyBase* |
| SVGFilterPrimitiveStandardAttributes::PropertyFromAttribute( |
| const QualifiedName& attribute_name) const { |
| if (attribute_name == svg_names::kXAttr) { |
| return x_.Get(); |
| } else if (attribute_name == svg_names::kYAttr) { |
| return y_.Get(); |
| } else if (attribute_name == svg_names::kWidthAttr) { |
| return width_.Get(); |
| } else if (attribute_name == svg_names::kHeightAttr) { |
| return height_.Get(); |
| } else if (attribute_name == svg_names::kResultAttr) { |
| return result_.Get(); |
| } else { |
| return SVGElement::PropertyFromAttribute(attribute_name); |
| } |
| } |
| |
| void SVGFilterPrimitiveStandardAttributes::SynchronizeAllSVGAttributes() const { |
| SVGAnimatedPropertyBase* attrs[]{x_.Get(), y_.Get(), width_.Get(), |
| height_.Get(), result_.Get()}; |
| SynchronizeListOfSVGAttributes(attrs); |
| SVGElement::SynchronizeAllSVGAttributes(); |
| } |
| |
| } // namespace blink |