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96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/* 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 "nsFontFaceList.h"
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#include "nsFontFace.h"
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#include "nsFontFaceLoader.h"
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#include "nsIFrame.h"
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#include "gfxFont.h"
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#include "mozilla/gfx/2D.h"
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nsFontFaceList::nsFontFaceList()
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{
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}
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nsFontFaceList::~nsFontFaceList()
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{
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}
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////////////////////////////////////////////////////////////////////////
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// nsISupports
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NS_IMPL_ISUPPORTS1(nsFontFaceList, nsIDOMFontFaceList)
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////////////////////////////////////////////////////////////////////////
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// nsIDOMFontFaceList
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/* nsIDOMFontFace item (in unsigned long index); */
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struct FindByIndexData {
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uint32_t mTarget;
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uint32_t mCurrent;
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nsIDOMFontFace* mResult;
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};
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static PLDHashOperator
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FindByIndex(gfxFontEntry* aKey, nsIDOMFontFace* aData, void* aUserData)
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{
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FindByIndexData* data = static_cast<FindByIndexData*>(aUserData);
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if (data->mCurrent == data->mTarget) {
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data->mResult = aData;
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return PL_DHASH_STOP;
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}
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data->mCurrent++;
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return PL_DHASH_NEXT;
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}
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NS_IMETHODIMP
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nsFontFaceList::Item(uint32_t index, nsIDOMFontFace **_retval)
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{
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NS_ENSURE_TRUE(index < mFontFaces.Count(), NS_ERROR_INVALID_ARG);
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FindByIndexData userData;
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userData.mTarget = index;
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userData.mCurrent = 0;
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userData.mResult = nullptr;
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mFontFaces.EnumerateRead(FindByIndex, &userData);
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NS_ASSERTION(userData.mResult != nullptr, "null entry in nsFontFaceList?");
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NS_IF_ADDREF(*_retval = userData.mResult);
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return NS_OK;
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}
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/* readonly attribute unsigned long length; */
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NS_IMETHODIMP
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nsFontFaceList::GetLength(uint32_t *aLength)
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{
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*aLength = mFontFaces.Count();
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////
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// nsFontFaceList
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nsresult
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nsFontFaceList::AddFontsFromTextRun(gfxTextRun* aTextRun,
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uint32_t aOffset, uint32_t aLength)
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{
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gfxTextRun::GlyphRunIterator iter(aTextRun, aOffset, aLength);
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while (iter.NextRun()) {
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gfxFontEntry *fe = iter.GetGlyphRun()->mFont->GetFontEntry();
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// if we have already listed this face, just make sure the match type is
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// recorded
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nsFontFace* existingFace =
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static_cast<nsFontFace*>(mFontFaces.GetWeak(fe));
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if (existingFace) {
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existingFace->AddMatchType(iter.GetGlyphRun()->mMatchType);
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} else {
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// A new font entry we haven't seen before
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nsRefPtr<nsFontFace> ff =
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new nsFontFace(fe, aTextRun->GetFontGroup(),
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iter.GetGlyphRun()->mMatchType);
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mFontFaces.Put(fe, ff);
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}
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}
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return NS_OK;
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}
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