michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsFontFaceList.h"
michael@0: #include "nsFontFace.h"
michael@0: #include "nsFontFaceLoader.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "gfxFont.h"
michael@0: #include "mozilla/gfx/2D.h"
michael@0: 
michael@0: nsFontFaceList::nsFontFaceList()
michael@0: {
michael@0: }
michael@0: 
michael@0: nsFontFaceList::~nsFontFaceList()
michael@0: {
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////
michael@0: // nsISupports
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsFontFaceList, nsIDOMFontFaceList)
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////
michael@0: // nsIDOMFontFaceList
michael@0: 
michael@0: /* nsIDOMFontFace item (in unsigned long index); */
michael@0: struct FindByIndexData {
michael@0:   uint32_t mTarget;
michael@0:   uint32_t mCurrent;
michael@0:   nsIDOMFontFace* mResult;
michael@0: };
michael@0: 
michael@0: static PLDHashOperator
michael@0: FindByIndex(gfxFontEntry* aKey, nsIDOMFontFace* aData, void* aUserData)
michael@0: {
michael@0:   FindByIndexData* data = static_cast<FindByIndexData*>(aUserData);
michael@0:   if (data->mCurrent == data->mTarget) {
michael@0:     data->mResult = aData;
michael@0:     return PL_DHASH_STOP;
michael@0:   }
michael@0:   data->mCurrent++;
michael@0:   return PL_DHASH_NEXT;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsFontFaceList::Item(uint32_t index, nsIDOMFontFace **_retval)
michael@0: {
michael@0:   NS_ENSURE_TRUE(index < mFontFaces.Count(), NS_ERROR_INVALID_ARG);
michael@0:   FindByIndexData userData;
michael@0:   userData.mTarget = index;
michael@0:   userData.mCurrent = 0;
michael@0:   userData.mResult = nullptr;
michael@0:   mFontFaces.EnumerateRead(FindByIndex, &userData);
michael@0:   NS_ASSERTION(userData.mResult != nullptr, "null entry in nsFontFaceList?");
michael@0:   NS_IF_ADDREF(*_retval = userData.mResult);
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: /* readonly attribute unsigned long length; */
michael@0: NS_IMETHODIMP
michael@0: nsFontFaceList::GetLength(uint32_t *aLength)
michael@0: {
michael@0:   *aLength = mFontFaces.Count();
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////
michael@0: // nsFontFaceList
michael@0: 
michael@0: nsresult
michael@0: nsFontFaceList::AddFontsFromTextRun(gfxTextRun* aTextRun,
michael@0:                                     uint32_t aOffset, uint32_t aLength)
michael@0: {
michael@0:   gfxTextRun::GlyphRunIterator iter(aTextRun, aOffset, aLength);
michael@0:   while (iter.NextRun()) {
michael@0:     gfxFontEntry *fe = iter.GetGlyphRun()->mFont->GetFontEntry();
michael@0:     // if we have already listed this face, just make sure the match type is
michael@0:     // recorded
michael@0:     nsFontFace* existingFace =
michael@0:       static_cast<nsFontFace*>(mFontFaces.GetWeak(fe));
michael@0:     if (existingFace) {
michael@0:       existingFace->AddMatchType(iter.GetGlyphRun()->mMatchType);
michael@0:     } else {
michael@0:       // A new font entry we haven't seen before
michael@0:       nsRefPtr<nsFontFace> ff =
michael@0:         new nsFontFace(fe, aTextRun->GetFontGroup(),
michael@0:                        iter.GetGlyphRun()->mMatchType);
michael@0:       mFontFaces.Put(fe, ff);
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   return NS_OK;
michael@0: }