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/*
* Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann
* <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
* Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
*
* 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_marker_element.h"
#include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_marker.h"
#include "third_party/blink/renderer/core/svg/svg_angle_tear_off.h"
#include "third_party/blink/renderer/core/svg/svg_enumeration_map.h"
#include "third_party/blink/renderer/core/svg_names.h"
#include "third_party/blink/renderer/platform/heap/heap.h"
namespace blink {
template <>
const SVGEnumerationMap& GetEnumerationMap<SVGMarkerUnitsType>() {
static const SVGEnumerationMap::Entry enum_items[] = {
{kSVGMarkerUnitsUserSpaceOnUse, "userSpaceOnUse"},
{kSVGMarkerUnitsStrokeWidth, "strokeWidth"},
};
static const SVGEnumerationMap entries(enum_items);
return entries;
}
SVGMarkerElement::SVGMarkerElement(Document& document)
: SVGElement(svg_names::kMarkerTag, document),
SVGFitToViewBox(this),
ref_x_(MakeGarbageCollected<SVGAnimatedLength>(
this,
svg_names::kRefXAttr,
SVGLengthMode::kWidth,
SVGLength::Initial::kUnitlessZero)),
ref_y_(MakeGarbageCollected<SVGAnimatedLength>(
this,
svg_names::kRefYAttr,
SVGLengthMode::kHeight,
SVGLength::Initial::kUnitlessZero)),
// Spec: If the markerWidth/markerHeight attribute is not specified, the
// effect is as if a value of "3" were specified.
marker_width_(MakeGarbageCollected<SVGAnimatedLength>(
this,
svg_names::kMarkerWidthAttr,
SVGLengthMode::kWidth,
SVGLength::Initial::kNumber3)),
marker_height_(MakeGarbageCollected<SVGAnimatedLength>(
this,
svg_names::kMarkerHeightAttr,
SVGLengthMode::kHeight,
SVGLength::Initial::kNumber3)),
orient_angle_(MakeGarbageCollected<SVGAnimatedAngle>(this)),
marker_units_(
MakeGarbageCollected<SVGAnimatedEnumeration<SVGMarkerUnitsType>>(
this,
svg_names::kMarkerUnitsAttr,
kSVGMarkerUnitsStrokeWidth)) {
AddToPropertyMap(ref_x_);
AddToPropertyMap(ref_y_);
AddToPropertyMap(marker_width_);
AddToPropertyMap(marker_height_);
AddToPropertyMap(orient_angle_);
AddToPropertyMap(marker_units_);
}
void SVGMarkerElement::Trace(Visitor* visitor) {
visitor->Trace(ref_x_);
visitor->Trace(ref_y_);
visitor->Trace(marker_width_);
visitor->Trace(marker_height_);
visitor->Trace(orient_angle_);
visitor->Trace(marker_units_);
SVGElement::Trace(visitor);
SVGFitToViewBox::Trace(visitor);
}
AffineTransform SVGMarkerElement::ViewBoxToViewTransform(
float view_width,
float view_height) const {
return SVGFitToViewBox::ViewBoxToViewTransform(
viewBox()->CurrentValue()->Value(), preserveAspectRatio()->CurrentValue(),
view_width, view_height);
}
void SVGMarkerElement::SvgAttributeChanged(const QualifiedName& attr_name) {
bool viewbox_attribute_changed = SVGFitToViewBox::IsKnownAttribute(attr_name);
bool length_attribute_changed = attr_name == svg_names::kRefXAttr ||
attr_name == svg_names::kRefYAttr ||
attr_name == svg_names::kMarkerWidthAttr ||
attr_name == svg_names::kMarkerHeightAttr;
if (length_attribute_changed)
UpdateRelativeLengthsInformation();
if (viewbox_attribute_changed || length_attribute_changed ||
attr_name == svg_names::kMarkerUnitsAttr ||
attr_name == svg_names::kOrientAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
auto* resource_container = ToLayoutSVGResourceContainer(GetLayoutObject());
if (resource_container) {
// The marker transform depends on both viewbox attributes, and the marker
// size attributes (width, height).
if (viewbox_attribute_changed || length_attribute_changed)
resource_container->SetNeedsTransformUpdate();
resource_container->InvalidateCacheAndMarkForLayout();
}
return;
}
SVGElement::SvgAttributeChanged(attr_name);
}
void SVGMarkerElement::ChildrenChanged(const ChildrenChange& change) {
SVGElement::ChildrenChanged(change);
if (change.ByParser())
return;
if (LayoutObject* object = GetLayoutObject()) {
object->SetNeedsLayoutAndFullPaintInvalidation(
layout_invalidation_reason::kChildChanged);
}
}
void SVGMarkerElement::setOrientToAuto() {
setAttribute(svg_names::kOrientAttr, "auto");
}
void SVGMarkerElement::setOrientToAngle(SVGAngleTearOff* angle) {
DCHECK(angle);
SVGAngle* target = angle->Target();
setAttribute(svg_names::kOrientAttr, AtomicString(target->ValueAsString()));
}
LayoutObject* SVGMarkerElement::CreateLayoutObject(const ComputedStyle&,
LegacyLayout) {
return new LayoutSVGResourceMarker(this);
}
bool SVGMarkerElement::SelfHasRelativeLengths() const {
return ref_x_->CurrentValue()->IsRelative() ||
ref_y_->CurrentValue()->IsRelative() ||
marker_width_->CurrentValue()->IsRelative() ||
marker_height_->CurrentValue()->IsRelative();
}
bool SVGMarkerElement::LayoutObjectIsNeeded(const ComputedStyle&) const {
return IsValid() && HasSVGParent();
}
} // namespace blink
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