mirror of
https://github.com/classilla/tenfourfox.git
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122 lines
2.9 KiB
C++
122 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "DOMSVGPoint.h"
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#include "DOMSVGPointList.h"
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#include "SVGPoint.h"
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#include "gfx2DGlue.h"
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#include "nsSVGElement.h"
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#include "nsError.h"
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#include "mozilla/dom/SVGMatrix.h"
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// See the architecture comment in DOMSVGPointList.h.
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using namespace mozilla;
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using namespace mozilla::gfx;
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namespace mozilla {
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//----------------------------------------------------------------------
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// Helper class: AutoChangePointNotifier
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// Stack-based helper class to pair calls to WillChangePointList and
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// DidChangePointList.
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class MOZ_RAII AutoChangePointNotifier
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{
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public:
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explicit AutoChangePointNotifier(DOMSVGPoint* aPoint MOZ_GUARD_OBJECT_NOTIFIER_PARAM)
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: mPoint(aPoint)
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{
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MOZ_GUARD_OBJECT_NOTIFIER_INIT;
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MOZ_ASSERT(mPoint, "Expecting non-null point");
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MOZ_ASSERT(mPoint->HasOwner(),
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"Expecting list to have an owner for notification");
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mEmptyOrOldValue =
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mPoint->Element()->WillChangePointList();
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}
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~AutoChangePointNotifier()
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{
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mPoint->Element()->DidChangePointList(mEmptyOrOldValue);
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if (mPoint->mList->AttrIsAnimating()) {
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mPoint->Element()->AnimationNeedsResample();
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}
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}
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private:
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DOMSVGPoint* const mPoint;
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nsAttrValue mEmptyOrOldValue;
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MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
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};
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} // namespace mozilla
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float
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DOMSVGPoint::X()
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{
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if (mIsAnimValItem && HasOwner()) {
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Element()->FlushAnimations(); // May make HasOwner() == false
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}
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return HasOwner() ? InternalItem().mX : mPt.mX;
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}
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void
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DOMSVGPoint::SetX(float aX, ErrorResult& rv)
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{
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if (mIsAnimValItem || mIsReadonly) {
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rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
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return;
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}
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if (HasOwner()) {
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if (InternalItem().mX == aX) {
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return;
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}
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AutoChangePointNotifier notifier(this);
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InternalItem().mX = aX;
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return;
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}
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mPt.mX = aX;
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}
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float
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DOMSVGPoint::Y()
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{
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if (mIsAnimValItem && HasOwner()) {
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Element()->FlushAnimations(); // May make HasOwner() == false
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}
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return HasOwner() ? InternalItem().mY : mPt.mY;
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}
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void
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DOMSVGPoint::SetY(float aY, ErrorResult& rv)
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{
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if (mIsAnimValItem || mIsReadonly) {
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rv.Throw(NS_ERROR_DOM_NO_MODIFICATION_ALLOWED_ERR);
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return;
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}
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if (HasOwner()) {
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if (InternalItem().mY == aY) {
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return;
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}
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AutoChangePointNotifier notifier(this);
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InternalItem().mY = aY;
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return;
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}
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mPt.mY = aY;
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}
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already_AddRefed<nsISVGPoint>
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DOMSVGPoint::MatrixTransform(dom::SVGMatrix& matrix)
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{
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float x = HasOwner() ? InternalItem().mX : mPt.mX;
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float y = HasOwner() ? InternalItem().mY : mPt.mY;
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Point pt = ToMatrix(matrix.GetMatrix()) * Point(x, y);
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nsCOMPtr<nsISVGPoint> newPoint = new DOMSVGPoint(pt);
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return newPoint.forget();
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}
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