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Allow decimal measurements on java

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Summary: Preserve floating point values when passing them across the JNI bridge.

Differential Revision: D4366605

fbshipit-source-id: 0b94ee87a03a6ed918360dd9998930e780fc865d
This commit is contained in:
Emil Sjolander
2016-12-29 04:52:20 -08:00
committed by Facebook Github Bot
parent f2080e520f
commit 352f592767
3 changed files with 68 additions and 9 deletions
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9
java/jni/YGJNI.cpp
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@@ -67,10 +67,13 @@ static YGSize YGJNIMeasureFunc(YGNodeRef node,
static_assert(sizeof(measureResult) == 8,
"Expected measureResult to be 8 bytes, or two 32 bit ints");
const float measuredWidth = static_cast<float>(0xFFFFFFFF & (measureResult >> 32));
const float measuredHeight = static_cast<float>(0xFFFFFFFF & measureResult);
int32_t wBits = 0xFFFFFFFF & (measureResult >> 32);
int32_t hBits = 0xFFFFFFFF & measureResult;
return YGSize{measuredWidth, measuredHeight};
const float *measuredWidth = reinterpret_cast<float*>(&wBits);
const float *measuredHeight = reinterpret_cast<float*>(&hBits);
return YGSize{*measuredWidth, *measuredHeight};
} else {
YGLog(YGLogLevelError, "Java YGNode was GCed during layout calculation\n");
return YGSize{