128 lines
3.7 KiB
C++
128 lines
3.7 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "SVGPolyElement.h"
|
|
|
|
#include "DOMSVGPointList.h"
|
|
#include "SVGContentUtils.h"
|
|
#include "mozilla/dom/SVGAnimatedLength.h"
|
|
#include "mozilla/gfx/2D.h"
|
|
|
|
using namespace mozilla::gfx;
|
|
|
|
namespace mozilla::dom {
|
|
|
|
//----------------------------------------------------------------------
|
|
// Implementation
|
|
|
|
SVGPolyElement::SVGPolyElement(
|
|
already_AddRefed<mozilla::dom::NodeInfo> aNodeInfo)
|
|
: SVGPolyElementBase(std::move(aNodeInfo)) {}
|
|
|
|
already_AddRefed<DOMSVGPointList> SVGPolyElement::Points() {
|
|
return DOMSVGPointList::GetDOMWrapper(mPoints.GetBaseValKey(), this);
|
|
}
|
|
|
|
already_AddRefed<DOMSVGPointList> SVGPolyElement::AnimatedPoints() {
|
|
return DOMSVGPointList::GetDOMWrapper(mPoints.GetAnimValKey(), this);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// SVGElement methods
|
|
|
|
/* virtual */
|
|
bool SVGPolyElement::HasValidDimensions() const {
|
|
return !mPoints.GetAnimValue().IsEmpty();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// SVGGeometryElement methods
|
|
|
|
bool SVGPolyElement::AttributeDefinesGeometry(const nsAtom* aName) {
|
|
return aName == nsGkAtoms::points || aName == nsGkAtoms::pathLength;
|
|
}
|
|
|
|
void SVGPolyElement::GetMarkPoints(nsTArray<SVGMark>* aMarks) {
|
|
const SVGPointList& points = mPoints.GetAnimValue();
|
|
|
|
if (points.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
float zoom = UserSpaceMetrics::GetZoom(this);
|
|
|
|
Point prevPos = points[0] * zoom;
|
|
float prevAngle = 0.0f;
|
|
if (!prevPos.IsFinite()) {
|
|
return;
|
|
}
|
|
|
|
aMarks->AppendElement(SVGMark(prevPos, 0, SVGMark::Type::Start));
|
|
|
|
for (uint32_t i = 1; i < points.Length(); ++i) {
|
|
gfx::Point pos = points[i] * zoom;
|
|
if (!pos.IsFinite()) {
|
|
aMarks->Clear();
|
|
return;
|
|
}
|
|
float angle = std::atan2(pos.y - prevPos.y, pos.x - prevPos.x);
|
|
|
|
// Vertex marker.
|
|
if (i == 1) {
|
|
aMarks->ElementAt(0).angle = angle;
|
|
} else {
|
|
aMarks->LastElement().angle =
|
|
SVGContentUtils::AngleBisect(prevAngle, angle);
|
|
}
|
|
|
|
aMarks->AppendElement(SVGMark(pos, 0, SVGMark::Type::Mid));
|
|
|
|
prevAngle = angle;
|
|
prevPos = pos;
|
|
}
|
|
|
|
aMarks->LastElement().angle = prevAngle;
|
|
aMarks->LastElement().type = SVGMark::Type::End;
|
|
}
|
|
|
|
bool SVGPolyElement::GetGeometryBounds(Rect* aBounds,
|
|
const StrokeOptions& aStrokeOptions,
|
|
const Matrix& aToBoundsSpace,
|
|
const Matrix* aToNonScalingStrokeSpace) {
|
|
const SVGPointList& points = mPoints.GetAnimValue();
|
|
|
|
if (points.IsEmpty()) {
|
|
// Rendering of the element is disabled
|
|
aBounds->SetEmpty();
|
|
return true;
|
|
}
|
|
|
|
if (aStrokeOptions.mLineWidth > 0 || aToNonScalingStrokeSpace) {
|
|
// We don't handle non-scaling-stroke or stroke-miterlimit etc. yet
|
|
return false;
|
|
}
|
|
|
|
float zoom = UserSpaceMetrics::GetZoom(this);
|
|
|
|
if (aToBoundsSpace.IsRectilinear()) {
|
|
// We can avoid transforming each point and just transform the result.
|
|
// Important for large point lists.
|
|
|
|
Rect bounds(Point(points[0]) * zoom, Size());
|
|
for (uint32_t i = 1; i < points.Length(); ++i) {
|
|
bounds.ExpandToEnclose(Point(points[i]) * zoom);
|
|
}
|
|
*aBounds = aToBoundsSpace.TransformBounds(bounds);
|
|
} else {
|
|
*aBounds =
|
|
Rect(aToBoundsSpace.TransformPoint(Point(points[0]) * zoom), Size());
|
|
for (uint32_t i = 1; i < points.Length(); ++i) {
|
|
aBounds->ExpandToEnclose(
|
|
aToBoundsSpace.TransformPoint(Point(points[i]) * zoom));
|
|
}
|
|
}
|
|
return aBounds->IsFinite();
|
|
}
|
|
} // namespace mozilla::dom
|