yoga/tests/YGAlignBaselineTest.cpp

/*
 *  Copyright (c) Facebook, Inc. and its affiliates.
 *
 *  This source code is licensed under the MIT license found in the LICENSE
 *  file in the root directory of this source tree.
 *
 */

#include <gtest/gtest.h>
#include <yoga/Yoga.h>

static float
_baselineFunc(YGNodeRef node, const float width, const float height) {
  return height / 2;
}

static YGSize _measure1(
    YGNodeRef node,
    float width,
    YGMeasureMode widthMode,
    float height,
    YGMeasureMode heightMode) {
  return YGSize{
      .width = 42,
      .height = 50,
  };
}

static YGSize _measure2(
    YGNodeRef node,
    float width,
    YGMeasureMode widthMode,
    float height,
    YGMeasureMode heightMode) {
  return YGSize{
      .width = 279,
      .height = 126,
  };
}

// Test case for bug in T32999822
TEST(YogaTest, align_baseline_parent_ht_not_specified) {
  YGConfigRef config = YGConfigNew();

  const YGNodeRef root = YGNodeNewWithConfig(config);
  YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
  YGNodeStyleSetAlignContent(root, YGAlignStretch);
  YGNodeStyleSetAlignItems(root, YGAlignBaseline);
  YGNodeStyleSetWidth(root, 340);
  YGNodeStyleSetMaxHeight(root, 170);
  YGNodeStyleSetMinHeight(root, 0);

  const YGNodeRef root_child0 = YGNodeNewWithConfig(config);
  YGNodeStyleSetFlexGrow(root_child0, 0);
  YGNodeStyleSetFlexShrink(root_child0, 1);
  YGNodeSetMeasureFunc(root_child0, _measure1);
  YGNodeInsertChild(root, root_child0, 0);

  const YGNodeRef root_child1 = YGNodeNewWithConfig(config);
  YGNodeStyleSetFlexGrow(root_child1, 0);
  YGNodeStyleSetFlexShrink(root_child1, 1);
  YGNodeSetMeasureFunc(root_child1, _measure2);
  YGNodeInsertChild(root, root_child1, 1);

  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
  ASSERT_FLOAT_EQ(340, YGNodeLayoutGetWidth(root));
  ASSERT_FLOAT_EQ(126, YGNodeLayoutGetHeight(root));

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
  ASSERT_FLOAT_EQ(42, YGNodeLayoutGetWidth(root_child0));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));
  ASSERT_FLOAT_EQ(76, YGNodeLayoutGetTop(root_child0));

  ASSERT_FLOAT_EQ(42, YGNodeLayoutGetLeft(root_child1));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child1));
  ASSERT_FLOAT_EQ(279, YGNodeLayoutGetWidth(root_child1));
  ASSERT_FLOAT_EQ(126, YGNodeLayoutGetHeight(root_child1));

  YGNodeFreeRecursive(root);

  YGConfigFree(config);
}

TEST(YogaTest, align_baseline_with_no_parent_ht) {
  YGConfigRef config = YGConfigNew();

  const YGNodeRef root = YGNodeNewWithConfig(config);
  YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
  YGNodeStyleSetAlignItems(root, YGAlignBaseline);
  YGNodeStyleSetWidth(root, 150);

  const YGNodeRef root_child0 = YGNodeNewWithConfig(config);
  YGNodeStyleSetWidth(root_child0, 50);
  YGNodeStyleSetHeight(root_child0, 50);
  YGNodeInsertChild(root, root_child0, 0);

  const YGNodeRef root_child1 = YGNodeNewWithConfig(config);
  YGNodeStyleSetWidth(root_child1, 50);
  YGNodeStyleSetHeight(root_child1, 40);
  YGNodeSetBaselineFunc(root_child1, _baselineFunc);
  YGNodeInsertChild(root, root_child1, 1);

  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root));
  ASSERT_FLOAT_EQ(70, YGNodeLayoutGetHeight(root));

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child0));

  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetLeft(root_child1));
  ASSERT_FLOAT_EQ(30, YGNodeLayoutGetTop(root_child1));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
  ASSERT_FLOAT_EQ(40, YGNodeLayoutGetHeight(root_child1));

  YGNodeFreeRecursive(root);

  YGConfigFree(config);
}

TEST(YogaTest, align_baseline_with_no_baseline_func_and_no_parent_ht) {
  YGConfigRef config = YGConfigNew();

  const YGNodeRef root = YGNodeNewWithConfig(config);
  YGNodeStyleSetFlexDirection(root, YGFlexDirectionRow);
  YGNodeStyleSetAlignItems(root, YGAlignBaseline);
  YGNodeStyleSetWidth(root, 150);

  const YGNodeRef root_child0 = YGNodeNewWithConfig(config);
  YGNodeStyleSetWidth(root_child0, 50);
  YGNodeStyleSetHeight(root_child0, 80);
  YGNodeInsertChild(root, root_child0, 0);

  const YGNodeRef root_child1 = YGNodeNewWithConfig(config);
  YGNodeStyleSetWidth(root_child1, 50);
  YGNodeStyleSetHeight(root_child1, 50);
  YGNodeInsertChild(root, root_child1, 1);

  YGNodeCalculateLayout(root, YGUndefined, YGUndefined, YGDirectionLTR);

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root));
  ASSERT_FLOAT_EQ(150, YGNodeLayoutGetWidth(root));
  ASSERT_FLOAT_EQ(80, YGNodeLayoutGetHeight(root));

  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetLeft(root_child0));
  ASSERT_FLOAT_EQ(0, YGNodeLayoutGetTop(root_child0));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child0));
  ASSERT_FLOAT_EQ(80, YGNodeLayoutGetHeight(root_child0));

  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetLeft(root_child1));
  ASSERT_FLOAT_EQ(30, YGNodeLayoutGetTop(root_child1));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetWidth(root_child1));
  ASSERT_FLOAT_EQ(50, YGNodeLayoutGetHeight(root_child1));

  YGNodeFreeRecursive(root);

  YGConfigFree(config);
}