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Import new C source of truth css-layout

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fbshipit-source-id: e866918d6c62fc1cf3a04c269f782b94db9b875a
This commit is contained in:
FBShipIt
2016-07-25 06:31:32 -07:00
committed by Emil Sjolander
parent 93809b69c8
commit fdd8552c4e
118 changed files with 11099 additions and 34574 deletions
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241
tests/java/com/facebook/csslayout/LayoutCachingTest.java Normal file
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/**
* Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
package com.facebook.csslayout;
import org.junit.Test;
import static junit.framework.Assert.*;
/**
* Tests for {@link LayoutEngine} and {@link CSSNode} to make sure layouts are only generated when
* needed.
*/
public class LayoutCachingTest {
private void assertTreeHasNewLayout(boolean expectedHasNewLayout, CSSNode root) {
assertEquals(expectedHasNewLayout, root.hasNewLayout());
for (int i = 0; i < root.getChildCount(); i++) {
assertTreeHasNewLayout(expectedHasNewLayout, root.getChildAt(i));
}
}
private void markLayoutAppliedForTree(CSSNode root) {
root.markLayoutSeen();
for (int i = 0; i < root.getChildCount(); i++) {
markLayoutAppliedForTree(root.getChildAt(i));
}
}
@Test
public void testCachesFullTree() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
root.calculateLayout(layoutContext);
assertTreeHasNewLayout(true, root);
markLayoutAppliedForTree(root);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTreeHasNewLayout(false, c0);
assertTreeHasNewLayout(false, c1);
}
@Test
public void testInvalidatesCacheWhenChildAdded() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
CSSNode c0c1 = new CSSNode();
CSSNode c1c0 = new CSSNode();
c0c1.setStyleWidth(200);
c0c1.setStyleHeight(200);
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
c0c0.addChildAt(c1c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c0.addChildAt(c0c1, 1);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertTrue(c0c1.hasNewLayout());
assertTrue(c0c0.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertTrue(c1c0.hasNewLayout());
}
@Test
public void testInvalidatesCacheWhenEnumPropertyChanges() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c1.setAlignSelf(CSSAlign.CENTER);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertFalse(c0c0.hasNewLayout());
}
@Test
public void testInvalidatesCacheWhenFloatPropertyChanges() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c1.setMargin(Spacing.LEFT, 10);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertTrue(c0c0.hasNewLayout());
}
@Test
public void testInvalidatesFullTreeWhenParentWidthChanges() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
CSSNode c1c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
c1.addChildAt(c1c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c0.setStyleWidth(200);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertTrue(c0c0.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertTrue(c1c0.hasNewLayout());
}
@Test
public void testDoesNotInvalidateCacheWhenPropertyIsTheSame() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
root.setStyleWidth(200);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
root.setStyleWidth(200);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTreeHasNewLayout(false, c0);
assertTreeHasNewLayout(false, c1);
}
@Test
public void testInvalidateCacheWhenHeightChangesPosition() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c1c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c1.addChildAt(c1c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c0.setStyleHeight(100);
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertFalse(c1c0.hasNewLayout());
}
@Test
public void testInvalidatesOnNewMeasureFunction() {
CSSLayoutContext layoutContext = new CSSLayoutContext();
CSSNode root = new CSSNode();
CSSNode c0 = new CSSNode();
CSSNode c1 = new CSSNode();
CSSNode c0c0 = new CSSNode();
root.addChildAt(c0, 0);
root.addChildAt(c1, 1);
c0.addChildAt(c0c0, 0);
root.calculateLayout(layoutContext);
markLayoutAppliedForTree(root);
c1.setMeasureFunction(new CSSNode.MeasureFunction() {
@Override
public void measure(CSSNode node, float width, CSSMeasureMode widthMode, float height, CSSMeasureMode heightMode, MeasureOutput measureOutput) {
measureOutput.width = 100;
measureOutput.height = 20;
}
});
root.calculateLayout(layoutContext);
assertTrue(root.hasNewLayout());
assertTrue(c1.hasNewLayout());
assertTrue(c0.hasNewLayout());
assertTrue(c0c0.hasNewLayout());
}
}