float YGFloatMin(const float a, const float b) {
if (!YGFloatIsUndefined(a) && !YGFloatIsUndefined(b)) {
return fminf(a, b);
}
return YGFloatIsUndefined(a) ? b : a;
}
bool YGValueEqual(const YGValue a, const YGValue b) {
if (a.unit != b.unit) {
return false;
}
if (a.unit == YGUnitUndefined ||
(YGFloatIsUndefined(a.value) && YGFloatIsUndefined(b.value))) {
return true;
}
return fabs(a.value - b.value) < 0.0001f;
}
float YGNode::resolveFlexShrink() {
if (parent_ == nullptr) {
return 0.0;
}
if (!YGFloatIsUndefined(style_.flexShrink)) {
return style_.flexShrink;
}
if (!config_->useWebDefaults && !YGFloatIsUndefined(style_.flex) &&
style_.flex < 0.0f) {
return -style_.flex;
}
return config_->useWebDefaults ? kWebDefaultFlexShrink : kDefaultFlexShrink;
}
float YGNode::resolveFlexGrow() {
// Root nodes flexGrow should always be 0
if (parent_ == nullptr) {
return 0.0;
}
if (!YGFloatIsUndefined(style_.flexGrow)) {
return style_.flexGrow;
}
if (!YGFloatIsUndefined(style_.flex) && style_.flex > 0.0f) {
return style_.flex;
}
return kDefaultFlexGrow;
}
YGValue YGNode::resolveFlexBasisPtr() const {
YGValue flexBasis = style_.flexBasis;
if (flexBasis.unit != YGUnitAuto && flexBasis.unit != YGUnitUndefined) {
return flexBasis;
}
if (!YGFloatIsUndefined(style_.flex) && style_.flex > 0.0f) {
return config_->useWebDefaults ? YGValueAuto : YGValueZero;
}
return YGValueAuto;
}
bool YGLayout::operator==(YGLayout layout) const {
bool isEqual = YGFloatArrayEqual(position, layout.position) &&
YGFloatArrayEqual(dimensions, layout.dimensions) &&
YGFloatArrayEqual(margin, layout.margin) &&
YGFloatArrayEqual(border, layout.border) &&
YGFloatArrayEqual(padding, layout.padding) &&
direction == layout.direction && hadOverflow == layout.hadOverflow &&
lastParentDirection == layout.lastParentDirection &&
nextCachedMeasurementsIndex == layout.nextCachedMeasurementsIndex &&
cachedLayout == layout.cachedLayout;
for (uint32_t i = 0; i < YG_MAX_CACHED_RESULT_COUNT && isEqual; ++i) {
isEqual = isEqual && cachedMeasurements[i] == layout.cachedMeasurements[i];
}
if (!YGFloatIsUndefined(computedFlexBasis) ||
!YGFloatIsUndefined(layout.computedFlexBasis)) {
isEqual = isEqual && (computedFlexBasis == layout.computedFlexBasis);
}
if (!YGFloatIsUndefined(measuredDimensions[0]) ||
!YGFloatIsUndefined(layout.measuredDimensions[0])) {
isEqual =
isEqual && (measuredDimensions[0] == layout.measuredDimensions[0]);
}
if (!YGFloatIsUndefined(measuredDimensions[1]) ||
!YGFloatIsUndefined(layout.measuredDimensions[1])) {
isEqual =
isEqual && (measuredDimensions[1] == layout.measuredDimensions[1]);
}
return isEqual;
}
TEST(YogaTest, reset_layout_when_child_removed) {
const YGNodeRef root = YGNodeNew();
const YGNodeRef root_child0 = YGNodeNew();
YGNodeStyleSetWidth(root_child0, 100);
YGNodeStyleSetHeight(root_child0, 100);
YGNodeInsertChild(root, root_child0, 0);
YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);
ASSERT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_EQ(100, YGNodeLayoutGetWidth(root_child0));
ASSERT_EQ(100, YGNodeLayoutGetHeight(root_child0));
YGNodeRemoveChild(root, root_child0);
ASSERT_EQ(0, YGNodeLayoutGetLeft(root_child0));
ASSERT_EQ(0, YGNodeLayoutGetTop(root_child0));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeLayoutGetWidth(root_child0)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeLayoutGetHeight(root_child0)));
YGNodeFreeRecursive(root);
}
float YGFloatSanitize(const float& val) {
return YGFloatIsUndefined(val) ? 0 : val;
}
bool YGFloatsEqual(const float a, const float b) {
if (!YGFloatIsUndefined(a) && !YGFloatIsUndefined(b)) {
return fabs(a - b) < 0.0001f;
}
return YGFloatIsUndefined(a) && YGFloatIsUndefined(b);
}
TEST(YogaTest, assert_default_values) {
const YGNodeRef root = YGNodeNew();
ASSERT_EQ(0, YGNodeGetChildCount(root));
ASSERT_EQ(NULL, YGNodeGetChild(root, 1));
ASSERT_EQ(YGDirectionInherit, YGNodeStyleGetDirection(root));
ASSERT_EQ(YGFlexDirectionColumn, YGNodeStyleGetFlexDirection(root));
ASSERT_EQ(YGJustifyFlexStart, YGNodeStyleGetJustifyContent(root));
ASSERT_EQ(YGAlignFlexStart, YGNodeStyleGetAlignContent(root));
ASSERT_EQ(YGAlignStretch, YGNodeStyleGetAlignItems(root));
ASSERT_EQ(YGAlignAuto, YGNodeStyleGetAlignSelf(root));
ASSERT_EQ(YGPositionTypeRelative, YGNodeStyleGetPositionType(root));
ASSERT_EQ(YGWrapNoWrap, YGNodeStyleGetFlexWrap(root));
ASSERT_EQ(YGOverflowVisible, YGNodeStyleGetOverflow(root));
ASSERT_FLOAT_EQ(0, YGNodeStyleGetFlexGrow(root));
ASSERT_FLOAT_EQ(0, YGNodeStyleGetFlexShrink(root));
ASSERT_EQ(YGNodeStyleGetFlexBasis(root).unit, YGUnitAuto);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeLeft).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeTop).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeRight).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeBottom).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeStart).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPosition(root, YGEdgeEnd).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeLeft).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeTop).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeRight).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeBottom).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeStart).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMargin(root, YGEdgeEnd).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeLeft).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeTop).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeRight).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeBottom).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeStart).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetPadding(root, YGEdgeEnd).unit, YGUnitUndefined);
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeLeft)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeTop)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeRight)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeBottom)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeStart)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeStyleGetBorder(root, YGEdgeEnd)));
ASSERT_EQ(YGNodeStyleGetWidth(root).unit, YGUnitAuto);
ASSERT_EQ(YGNodeStyleGetHeight(root).unit, YGUnitAuto);
ASSERT_EQ(YGNodeStyleGetMinWidth(root).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMinHeight(root).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMaxWidth(root).unit, YGUnitUndefined);
ASSERT_EQ(YGNodeStyleGetMaxHeight(root).unit, YGUnitUndefined);
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetRight(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetBottom(root));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetMargin(root, YGEdgeLeft));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetMargin(root, YGEdgeTop));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetMargin(root, YGEdgeRight));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetMargin(root, YGEdgeBottom));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetPadding(root, YGEdgeLeft));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetPadding(root, YGEdgeTop));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetPadding(root, YGEdgeRight));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetPadding(root, YGEdgeBottom));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetBorder(root, YGEdgeLeft));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetBorder(root, YGEdgeTop));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetBorder(root, YGEdgeRight));
ASSERT_FLOAT_EQ(0, YGNodeLayoutGetBorder(root, YGEdgeBottom));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeLayoutGetWidth(root)));
ASSERT_TRUE(YGFloatIsUndefined(YGNodeLayoutGetHeight(root)));
ASSERT_EQ(YGDirectionInherit, YGNodeLayoutGetDirection(root));
YGNodeFreeRecursive(root);
}
