acbffc8485
Reviewed By: aaronabramov Differential Revision: D33367752 fbshipit-source-id: 4ce94d184485e5ee0a62cf67ad2d3ba16e285c8f
73 lines
1.7 KiB
C++
73 lines
1.7 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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const short int LAYOUT_EDGE_SET_FLAG_INDEX = 0;
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const short int LAYOUT_WIDTH_INDEX = 1;
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const short int LAYOUT_HEIGHT_INDEX = 2;
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const short int LAYOUT_LEFT_INDEX = 3;
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const short int LAYOUT_TOP_INDEX = 4;
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const short int LAYOUT_DIRECTION_INDEX = 5;
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const short int LAYOUT_MARGIN_START_INDEX = 6;
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const short int LAYOUT_PADDING_START_INDEX = 10;
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const short int LAYOUT_BORDER_START_INDEX = 14;
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namespace {
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const int DOES_LEGACY_STRETCH_BEHAVIOUR = 8;
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const int HAS_NEW_LAYOUT = 16;
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union YGNodeContext {
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uintptr_t edgesSet = 0;
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void* asVoidPtr;
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};
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class YGNodeEdges {
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uintptr_t edges_;
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public:
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enum Edge {
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MARGIN = 1,
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PADDING = 2,
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BORDER = 4,
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};
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YGNodeEdges(YGNodeRef node) {
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auto context = YGNodeContext{};
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context.asVoidPtr = node->getContext();
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edges_ = context.edgesSet;
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}
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void setOn(YGNodeRef node) {
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auto context = YGNodeContext{};
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context.edgesSet = edges_;
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node->setContext(context.asVoidPtr);
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}
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bool has(Edge edge) { return (edges_ & edge) == edge; }
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YGNodeEdges& add(Edge edge) {
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edges_ |= edge;
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return *this;
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}
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int get() { return edges_; }
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};
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struct YogaValue {
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static constexpr jint NAN_BYTES = 0x7fc00000;
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static jlong asJavaLong(const YGValue& value) {
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uint32_t valueBytes = 0;
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memcpy(&valueBytes, &value.value, sizeof valueBytes);
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return ((jlong) value.unit) << 32 | valueBytes;
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}
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constexpr static jlong undefinedAsJavaLong() {
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return ((jlong) YGUnitUndefined) << 32 | NAN_BYTES;
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}
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};
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} // namespace
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