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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 "SVGTransformList.h"
#include "SVGTransformListParser.h"
#include "nsString.h"
#include "nsError.h"
namespace mozilla {
gfxMatrix SVGTransformList::GetConsolidationMatrix() const {
// To benefit from Return Value Optimization and avoid copy constructor calls
// due to our use of return-by-value, we must return the exact same object
// from ALL return points. This function must only return THIS variable:
gfxMatrix result;
if (mItems.IsEmpty()) return result;
result = mItems[0].GetMatrix();
if (mItems.Length() == 1) return result;
for (uint32_t i = 1; i < mItems.Length(); ++i) {
result.PreMultiply(mItems[i].GetMatrix());
}
return result;
}
nsresult SVGTransformList::CopyFrom(const SVGTransformList& rhs) {
return CopyFrom(rhs.mItems);
}
nsresult SVGTransformList::CopyFrom(
const nsTArray<SVGTransform>& aTransformArray) {
if (!mItems.Assign(aTransformArray, fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
void SVGTransformList::GetValueAsString(nsAString& aValue) const {
aValue.Truncate();
uint32_t last = mItems.Length() - 1;
for (uint32_t i = 0; i < mItems.Length(); ++i) {
nsAutoString length;
mItems[i].GetValueAsString(length);
// We ignore OOM, since it's not useful for us to return an error.
aValue.Append(length);
if (i != last) {
aValue.Append(' ');
}
}
}
nsresult SVGTransformList::SetValueFromString(const nsAString& aValue) {
SVGTransformListParser parser(aValue);
if (!parser.Parse()) {
// there was a parse error.
return NS_ERROR_DOM_SYNTAX_ERR;
}
return CopyFrom(parser.GetTransformList());
}
} // namespace mozilla
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