diff options
author | 2013-06-06 21:25:09 +0000 | |
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committer | 2013-06-06 21:25:09 +0000 | |
commit | e47e7d17a6444e0f44aece3e6d2a842f64aadada (patch) | |
tree | 4a0822b8957526ac691beafd696d9b4578d162e9 /src/ports | |
parent | 2c84aa35988c661b3e5513c8ba9b3959832ff288 (diff) |
Fix crash when attempting to use a font fallback chain with a custom font.
This is a cherry-pick of a CL that has already been merged into Android.
Review URL: https://codereview.chromium.org/16005011
git-svn-id: http://skia.googlecode.com/svn/trunk@9468 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'src/ports')
-rw-r--r-- | src/ports/SkFontConfigInterface_android.cpp | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/src/ports/SkFontConfigInterface_android.cpp b/src/ports/SkFontConfigInterface_android.cpp index 8039906ab6..2e2d88d689 100644 --- a/src/ports/SkFontConfigInterface_android.cpp +++ b/src/ports/SkFontConfigInterface_android.cpp @@ -569,18 +569,24 @@ SkTypeface* SkFontConfigInterfaceAndroid::nextLogicalTypeface(SkFontID currFontI return NULL; } - const SkTypeface* currTypeface = SkTypefaceCache::FindByID(currFontID); - SkASSERT(currTypeface != 0); - FallbackFontList* currentFallbackList = findFallbackFontList(opts.getLanguage()); SkASSERT(currentFallbackList); // we must convert currTypeface into a FontRecID - FontRecID currFontRecID = ((FontConfigTypeface*)currTypeface)->getIdentity().fID; - SkASSERT(INVALID_FONT_REC_ID != currFontRecID); + FontRecID currFontRecID = INVALID_FONT_REC_ID; + const SkTypeface* currTypeface = SkTypefaceCache::FindByID(currFontID); + // non-system fonts are not in the font cache so if we are asked to fallback + // for a non-system font we will start at the front of the chain. + if (NULL != currTypeface && currFontID == origFontID) { + currFontRecID = ((FontConfigTypeface*)currTypeface)->getIdentity().fID; + SkASSERT(INVALID_FONT_REC_ID != currFontRecID); + } - // TODO lookup the index next font in the chain + // lookup the index next font in the chain int currFallbackFontIndex = currentFallbackList->find(currFontRecID); + // We add 1 to the returned index for 2 reasons: (1) if find succeeds it moves + // our index to the next entry in the list; (2) if find() fails it returns + // -1 and incrementing it will set our starting index to 0 (the head of the list) int nextFallbackFontIndex = currFallbackFontIndex + 1; if(nextFallbackFontIndex >= currentFallbackList->count()) { |