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Allow aspect ratio to expand beyond bounds of parent

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Summary: Allow aspect ratio to expand beyond bounds of parent as is generally accepted in css

Reviewed By: passy

Differential Revision: D4397547

fbshipit-source-id: d2b1ca7b096f2f17b3efbd8f47a50678bfe7bb5f
This commit is contained in:
Emil Sjolander
2017-01-10 08:26:50 -08:00
committed by Facebook Github Bot
parent c04604dbc0
commit e39f13a8ea
2 changed files with 31 additions and 4 deletions
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21
tests/YGAspectRatioTest.cpp
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@@ -676,3 +676,24 @@ TEST(YogaTest, aspect_ratio_height_overrides_align_stretch_column) {
YGNodeFreeRecursive(root);
}
TEST(YogaTest, aspect_ratio_allow_child_overflow_parent_size) {
const YGNodeRef root = YGNodeNew();
YGNodeStyleSetAlignItems(root, YGAlignFlexStart);
YGNodeStyleSetWidth(root, 100);
const YGNodeRef root_child0 = YGNodeNew();
YGNodeStyleSetHeight(root_child0, 50);
YGNodeStyleSetAspectRatio(root_child0, 4);
YGNodeInsertChild(root, root_child0, 0);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_EQ(100, YGNodeLayoutGetWidth(root));
ASSERT_EQ(50, YGNodeLayoutGetHeight(root));
ASSERT_EQ(200, YGNodeLayoutGetWidth(root_child0));
ASSERT_EQ(50, YGNodeLayoutGetHeight(root_child0));
YGNodeFreeRecursive(root);
}

6
yoga/Yoga.c
View File

@@ -2239,8 +2239,11 @@ static void YGNodelayoutImpl(const YGNodeRef node,
availableInnerWidth));
childHeightMeasureMode = YGMeasureModeExactly;
// Parent size constraint should have higher priority than flex
if (YGNodeIsFlex(currentRelativeChild)) {
childHeight = fminf(childHeight, availableInnerHeight);
childWidth = childHeight * currentRelativeChild->style.aspectRatio;
}
} else {
childWidth = fmaxf(childHeight * currentRelativeChild->style.aspectRatio,
YGNodePaddingAndBorderForAxis(currentRelativeChild,
@@ -2248,10 +2251,13 @@ static void YGNodelayoutImpl(const YGNodeRef node,
availableInnerWidth));
childWidthMeasureMode = YGMeasureModeExactly;
// Parent size constraint should have higher priority than flex
if (YGNodeIsFlex(currentRelativeChild)) {
childWidth = fminf(childWidth, availableInnerWidth);
childHeight = childWidth / currentRelativeChild->style.aspectRatio;
}
}
}
YGConstrainMaxSizeForMode(
YGValueResolve(&currentRelativeChild->style.maxDimensions[YGDimensionWidth],