dali-toolkit/third-party/yoga/YGLayout.cpp

   1 /**
   2  * Copyright (c) 2014-present, Facebook, Inc.
   3  *
   4  * This source code is licensed under the MIT license found in the
   5  * LICENSE file in the root directory of this source tree.
   6  */
   7
   8 #include "YGLayout.h"
   9 #include "Utils.h"
  10
  11 const std::array<float, 2> kYGDefaultDimensionValues = {
  12     {YGUndefined, YGUndefined}};
  13
  14 YGLayout::YGLayout()
  15     : position(),
  16       dimensions(kYGDefaultDimensionValues),
  17       margin(),
  18       border(),
  19       padding(),
  20       direction(YGDirectionInherit),
  21       computedFlexBasisGeneration(0),
  22       computedFlexBasis(YGFloatOptional()),
  23       hadOverflow(false),
  24       generationCount(0),
  25       lastOwnerDirection((YGDirection)-1),
  26       nextCachedMeasurementsIndex(0),
  27       cachedMeasurements(),
  28       measuredDimensions(kYGDefaultDimensionValues),
  29       cachedLayout(YGCachedMeasurement()),
  30       didUseLegacyFlag(false),
  31       doesLegacyStretchFlagAffectsLayout(false) {}
  32
  33 bool YGLayout::operator==(const YGLayout& layout) const {
  34   bool isEqual = YGFloatArrayEqual(position, layout.position) &&
  35       YGFloatArrayEqual(dimensions, layout.dimensions) &&
  36       YGFloatArrayEqual(margin, layout.margin) &&
  37       YGFloatArrayEqual(border, layout.border) &&
  38       YGFloatArrayEqual(padding, layout.padding) &&
  39       direction == layout.direction && hadOverflow == layout.hadOverflow &&
  40       lastOwnerDirection == layout.lastOwnerDirection &&
  41       nextCachedMeasurementsIndex == layout.nextCachedMeasurementsIndex &&
  42       cachedLayout == layout.cachedLayout &&
  43       computedFlexBasis == layout.computedFlexBasis;
  44
  45   for (uint32_t i = 0; i < YG_MAX_CACHED_RESULT_COUNT && isEqual; ++i) {
  46     isEqual = isEqual && cachedMeasurements[i] == layout.cachedMeasurements[i];
  47   }
  48
  49   if (!YGFloatIsUndefined(measuredDimensions[0]) ||
  50       !YGFloatIsUndefined(layout.measuredDimensions[0])) {
  51     isEqual =
  52         isEqual && (measuredDimensions[0] == layout.measuredDimensions[0]);
  53   }
  54   if (!YGFloatIsUndefined(measuredDimensions[1]) ||
  55       !YGFloatIsUndefined(layout.measuredDimensions[1])) {
  56     isEqual =
  57         isEqual && (measuredDimensions[1] == layout.measuredDimensions[1]);
  58   }
  59
  60   return isEqual;
  61 }
  62
  63 bool YGLayout::operator!=(const YGLayout& layout) const {
  64   return !(*this == layout);
  65 }