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Cleaned up memory management in windows attrstr.cpp; also got rid of the logHRESULT(HELP) I was using in case DirectWrite doesn't return NULL+S_OK on a nonexistent drawing effect (thankfully it does).

This commit is contained in:
Pietro Gagliardi 2018-03-17 21:26:34 -04:00
parent 70321353a1
commit 78e0684435
1 changed files with 13 additions and 13 deletions
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26
windows/attrstr.cpp
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@ -240,10 +240,8 @@ static HRESULT addEffectAttributeToRange(struct foreachParams *p, size_t start,
while (start < end) {
hr = p->layout->GetDrawingEffect(start, &u, &range);
if (hr != S_OK)
{logHRESULT(L"HELP", hr);
// TODO proper cleanup somehow
return hr;
} cea = (combinedEffectsAttr *) u;
cea = (combinedEffectsAttr *) u;
if (cea == NULL)
cea = new combinedEffectsAttr(attr);
else
@ -257,10 +255,11 @@ static HRESULT addEffectAttributeToRange(struct foreachParams *p, size_t start,
if ((range.startPosition + range.length) > end)
range.length = end - range.startPosition;
hr = p->layout->SetDrawingEffect(cea, range);
// SetDrawingEffect will AddRef(), so Release() our copy
// (and we're abandoning early if that failed, so this will make sure things are cleaned up in that case)
cea->Release();
if (hr != S_OK)
// TODO proper cleanup somehow
return hr;
// TODO figure out what and when needs to be released
start += range.length;
}
return S_OK;
@ -377,11 +376,13 @@ static HRESULT applyEffectsAttributes(struct foreachParams *p)
// go through, replacing every combinedEffectsAttr with the proper drawingEffectsAttr
range.startPosition = 0;
// and in case this while loop never runs, make hr valid to start with
hr = S_OK;
while (range.startPosition < p->len) {
hr = p->layout->GetDrawingEffect(range.startPosition, &u, &range);
if (hr != S_OK)
// TODO proper cleanup somehow
return hr;
// note that we are breaking instead of returning; this allows us to clean up on failure
break;
cea = (combinedEffectsAttr *) u;
if (cea != NULL) {
auto diter = effects.find(cea);
@ -392,22 +393,21 @@ static HRESULT applyEffectsAttributes(struct foreachParams *p)
effects.insert({cea, dea});
}
hr = p->layout->SetDrawingEffect(dea, range);
// don't release dea; we need the reference that's inside the map
// (we don't take extra references on lookup, so this will be fine)
if (hr != S_OK)
// TODO proper cleanup somehow
return hr;
break;
}
range.startPosition += range.length;
}
// and clean up, finally destroying the combinedEffectAttrs too
#if 0
TODO
// we do this in the case of failure as well, to make sure everything is properly cleaned up
for (auto iter = effects.begin(); iter != effects.end(); iter++) {
iter->first->Release();
iter->second->Release();
}
#endif
return S_OK;
return hr;
}
void uiprivAttributedStringApplyAttributesToDWriteTextLayout(uiDrawTextLayoutParams *p, IDWriteTextLayout *layout, std::vector<struct drawTextBackgroundParams *> **backgroundParams)