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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/nsSVGViewBox.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/nsSVGViewBox.cpp')
-rw-r--r--dom/svg/nsSVGViewBox.cpp360
1 files changed, 360 insertions, 0 deletions
diff --git a/dom/svg/nsSVGViewBox.cpp b/dom/svg/nsSVGViewBox.cpp
new file mode 100644
index 000000000..f0e6b0092
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+++ b/dom/svg/nsSVGViewBox.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsSVGViewBox.h"
+
+#include "mozilla/Move.h"
+#include "nsCharSeparatedTokenizer.h"
+#include "nsSMILValue.h"
+#include "nsTextFormatter.h"
+#include "SVGContentUtils.h"
+#include "SVGViewBoxSMILType.h"
+
+#define NUM_VIEWBOX_COMPONENTS 4
+using namespace mozilla;
+
+/* Implementation of nsSVGViewBoxRect methods */
+
+bool
+nsSVGViewBoxRect::operator==(const nsSVGViewBoxRect& aOther) const
+{
+ if (&aOther == this)
+ return true;
+
+ return (none && aOther.none) ||
+ (!none && !aOther.none &&
+ x == aOther.x &&
+ y == aOther.y &&
+ width == aOther.width &&
+ height == aOther.height);
+}
+
+/* Cycle collection macros for nsSVGViewBox */
+
+NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(nsSVGViewBox::DOMBaseVal, mSVGElement)
+NS_SVG_VAL_IMPL_CYCLE_COLLECTION_WRAPPERCACHED(nsSVGViewBox::DOMAnimVal, mSVGElement)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGViewBox::DOMBaseVal)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGViewBox::DOMBaseVal)
+
+NS_IMPL_CYCLE_COLLECTING_ADDREF(nsSVGViewBox::DOMAnimVal)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(nsSVGViewBox::DOMAnimVal)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGViewBox::DOMBaseVal)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsSVGViewBox::DOMAnimVal)
+ NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
+ NS_INTERFACE_MAP_ENTRY(nsISupports)
+NS_INTERFACE_MAP_END
+
+static nsSVGAttrTearoffTable<nsSVGViewBox, nsSVGViewBox::DOMBaseVal>
+ sBaseSVGViewBoxTearoffTable;
+static nsSVGAttrTearoffTable<nsSVGViewBox, nsSVGViewBox::DOMAnimVal>
+ sAnimSVGViewBoxTearoffTable;
+nsSVGAttrTearoffTable<nsSVGViewBox, dom::SVGAnimatedRect>
+ nsSVGViewBox::sSVGAnimatedRectTearoffTable;
+
+
+/* Implementation of nsSVGViewBox methods */
+
+void
+nsSVGViewBox::Init()
+{
+ mHasBaseVal = false;
+ // We shouldn't use mBaseVal for rendering (its usages should be guarded with
+ // "mHasBaseVal" checks), but just in case we do by accident, this will
+ // ensure that we treat it as "none" and ignore its numeric values:
+ mBaseVal.none = true;
+
+ mAnimVal = nullptr;
+}
+
+bool
+nsSVGViewBox::HasRect() const
+{
+ // Check mAnimVal if we have one; otherwise, check mBaseVal if we have one;
+ // otherwise, just return false (we clearly do not have a rect).
+ const nsSVGViewBoxRect* rect = mAnimVal;
+ if (!rect) {
+ if (!mHasBaseVal) {
+ // no anim val, no base val --> no viewbox rect
+ return false;
+ }
+ rect = &mBaseVal;
+ }
+
+ return !rect->none && rect->width >= 0 && rect->height >= 0;
+}
+
+void
+nsSVGViewBox::SetAnimValue(const nsSVGViewBoxRect& aRect,
+ nsSVGElement *aSVGElement)
+{
+ if (!mAnimVal) {
+ // it's okay if allocation fails - and no point in reporting that
+ mAnimVal = new nsSVGViewBoxRect(aRect);
+ } else {
+ if (aRect == *mAnimVal) {
+ return;
+ }
+ *mAnimVal = aRect;
+ }
+ aSVGElement->DidAnimateViewBox();
+}
+
+void
+nsSVGViewBox::SetBaseValue(const nsSVGViewBoxRect& aRect,
+ nsSVGElement *aSVGElement)
+{
+ if (!mHasBaseVal || mBaseVal == aRect) {
+ // This method is used to set a single x, y, width
+ // or height value. It can't create a base value
+ // as the other components may be undefined. We record
+ // the new value though, so as not to lose data.
+ mBaseVal = aRect;
+ return;
+ }
+
+ nsAttrValue emptyOrOldValue = aSVGElement->WillChangeViewBox();
+
+ mBaseVal = aRect;
+ mHasBaseVal = true;
+
+ aSVGElement->DidChangeViewBox(emptyOrOldValue);
+ if (mAnimVal) {
+ aSVGElement->AnimationNeedsResample();
+ }
+}
+
+static nsresult
+ToSVGViewBoxRect(const nsAString& aStr, nsSVGViewBoxRect *aViewBox)
+{
+ if (aStr.EqualsLiteral("none")) {
+ aViewBox->none = true;
+ return NS_OK;
+ }
+
+ nsCharSeparatedTokenizerTemplate<IsSVGWhitespace>
+ tokenizer(aStr, ',',
+ nsCharSeparatedTokenizer::SEPARATOR_OPTIONAL);
+ float vals[NUM_VIEWBOX_COMPONENTS];
+ uint32_t i;
+ for (i = 0; i < NUM_VIEWBOX_COMPONENTS && tokenizer.hasMoreTokens(); ++i) {
+ if (!SVGContentUtils::ParseNumber(tokenizer.nextToken(), vals[i])) {
+ return NS_ERROR_DOM_SYNTAX_ERR;
+ }
+ }
+
+ if (i != NUM_VIEWBOX_COMPONENTS || // Too few values.
+ tokenizer.hasMoreTokens() || // Too many values.
+ tokenizer.separatorAfterCurrentToken()) { // Trailing comma.
+ return NS_ERROR_DOM_SYNTAX_ERR;
+ }
+
+ aViewBox->x = vals[0];
+ aViewBox->y = vals[1];
+ aViewBox->width = vals[2];
+ aViewBox->height = vals[3];
+ aViewBox->none = false;
+
+ return NS_OK;
+}
+
+nsresult
+nsSVGViewBox::SetBaseValueString(const nsAString& aValue,
+ nsSVGElement *aSVGElement,
+ bool aDoSetAttr)
+{
+ nsSVGViewBoxRect viewBox;
+
+ nsresult rv = ToSVGViewBoxRect(aValue, &viewBox);
+ if (NS_FAILED(rv)) {
+ return rv;
+ }
+ // Comparison against mBaseVal is only valid if we currently have a base val.
+ if (mHasBaseVal && viewBox == mBaseVal) {
+ return NS_OK;
+ }
+
+ nsAttrValue emptyOrOldValue;
+ if (aDoSetAttr) {
+ emptyOrOldValue = aSVGElement->WillChangeViewBox();
+ }
+ mHasBaseVal = true;
+ mBaseVal = viewBox;
+
+ if (aDoSetAttr) {
+ aSVGElement->DidChangeViewBox(emptyOrOldValue);
+ }
+ if (mAnimVal) {
+ aSVGElement->AnimationNeedsResample();
+ }
+ return NS_OK;
+}
+
+void
+nsSVGViewBox::GetBaseValueString(nsAString& aValue) const
+{
+ if (mBaseVal.none) {
+ aValue.AssignLiteral("none");
+ return;
+ }
+ char16_t buf[200];
+ nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(char16_t),
+ u"%g %g %g %g",
+ (double)mBaseVal.x, (double)mBaseVal.y,
+ (double)mBaseVal.width, (double)mBaseVal.height);
+ aValue.Assign(buf);
+}
+
+
+already_AddRefed<dom::SVGAnimatedRect>
+nsSVGViewBox::ToSVGAnimatedRect(nsSVGElement* aSVGElement)
+{
+ RefPtr<dom::SVGAnimatedRect> domAnimatedRect =
+ sSVGAnimatedRectTearoffTable.GetTearoff(this);
+ if (!domAnimatedRect) {
+ domAnimatedRect = new dom::SVGAnimatedRect(this, aSVGElement);
+ sSVGAnimatedRectTearoffTable.AddTearoff(this, domAnimatedRect);
+ }
+
+ return domAnimatedRect.forget();
+}
+
+already_AddRefed<dom::SVGIRect>
+nsSVGViewBox::ToDOMBaseVal(nsSVGElement *aSVGElement)
+{
+ if (!mHasBaseVal || mBaseVal.none) {
+ return nullptr;
+ }
+
+ RefPtr<DOMBaseVal> domBaseVal =
+ sBaseSVGViewBoxTearoffTable.GetTearoff(this);
+ if (!domBaseVal) {
+ domBaseVal = new DOMBaseVal(this, aSVGElement);
+ sBaseSVGViewBoxTearoffTable.AddTearoff(this, domBaseVal);
+ }
+
+ return domBaseVal.forget();
+}
+
+nsSVGViewBox::DOMBaseVal::~DOMBaseVal()
+{
+ sBaseSVGViewBoxTearoffTable.RemoveTearoff(mVal);
+}
+
+already_AddRefed<dom::SVGIRect>
+nsSVGViewBox::ToDOMAnimVal(nsSVGElement *aSVGElement)
+{
+ if ((mAnimVal && mAnimVal->none) ||
+ (!mAnimVal && (!mHasBaseVal || mBaseVal.none))) {
+ return nullptr;
+ }
+
+ RefPtr<DOMAnimVal> domAnimVal =
+ sAnimSVGViewBoxTearoffTable.GetTearoff(this);
+ if (!domAnimVal) {
+ domAnimVal = new DOMAnimVal(this, aSVGElement);
+ sAnimSVGViewBoxTearoffTable.AddTearoff(this, domAnimVal);
+ }
+
+ return domAnimVal.forget();
+}
+
+nsSVGViewBox::DOMAnimVal::~DOMAnimVal()
+{
+ sAnimSVGViewBoxTearoffTable.RemoveTearoff(mVal);
+}
+
+void
+nsSVGViewBox::DOMBaseVal::SetX(float aX, ErrorResult& aRv)
+{
+ nsSVGViewBoxRect rect = mVal->GetBaseValue();
+ rect.x = aX;
+ mVal->SetBaseValue(rect, mSVGElement);
+}
+
+void
+nsSVGViewBox::DOMBaseVal::SetY(float aY, ErrorResult& aRv)
+{
+ nsSVGViewBoxRect rect = mVal->GetBaseValue();
+ rect.y = aY;
+ mVal->SetBaseValue(rect, mSVGElement);
+}
+
+void
+nsSVGViewBox::DOMBaseVal::SetWidth(float aWidth, ErrorResult& aRv)
+{
+ nsSVGViewBoxRect rect = mVal->GetBaseValue();
+ rect.width = aWidth;
+ mVal->SetBaseValue(rect, mSVGElement);
+}
+
+void
+nsSVGViewBox::DOMBaseVal::SetHeight(float aHeight, ErrorResult& aRv)
+{
+ nsSVGViewBoxRect rect = mVal->GetBaseValue();
+ rect.height = aHeight;
+ mVal->SetBaseValue(rect, mSVGElement);
+}
+
+nsISMILAttr*
+nsSVGViewBox::ToSMILAttr(nsSVGElement *aSVGElement)
+{
+ return new SMILViewBox(this, aSVGElement);
+}
+
+nsresult
+nsSVGViewBox::SMILViewBox
+ ::ValueFromString(const nsAString& aStr,
+ const dom::SVGAnimationElement* /*aSrcElement*/,
+ nsSMILValue& aValue,
+ bool& aPreventCachingOfSandwich) const
+{
+ nsSVGViewBoxRect viewBox;
+ nsresult res = ToSVGViewBoxRect(aStr, &viewBox);
+ if (NS_FAILED(res)) {
+ return res;
+ }
+ nsSMILValue val(&SVGViewBoxSMILType::sSingleton);
+ *static_cast<nsSVGViewBoxRect*>(val.mU.mPtr) = viewBox;
+ aValue = Move(val);
+ aPreventCachingOfSandwich = false;
+
+ return NS_OK;
+}
+
+nsSMILValue
+nsSVGViewBox::SMILViewBox::GetBaseValue() const
+{
+ nsSMILValue val(&SVGViewBoxSMILType::sSingleton);
+ *static_cast<nsSVGViewBoxRect*>(val.mU.mPtr) = mVal->mBaseVal;
+ return val;
+}
+
+void
+nsSVGViewBox::SMILViewBox::ClearAnimValue()
+{
+ if (mVal->mAnimVal) {
+ mVal->mAnimVal = nullptr;
+ mSVGElement->DidAnimateViewBox();
+ }
+}
+
+nsresult
+nsSVGViewBox::SMILViewBox::SetAnimValue(const nsSMILValue& aValue)
+{
+ NS_ASSERTION(aValue.mType == &SVGViewBoxSMILType::sSingleton,
+ "Unexpected type to assign animated value");
+ if (aValue.mType == &SVGViewBoxSMILType::sSingleton) {
+ nsSVGViewBoxRect &vb = *static_cast<nsSVGViewBoxRect*>(aValue.mU.mPtr);
+ mVal->SetAnimValue(vb, mSVGElement);
+ }
+ return NS_OK;
+}