909e4bea6e
Summary: Pull Request resolved: https://github.com/facebook/yoga/pull/1768 Depending on the flex direction text will either be capped to the measured size or to the longest word, so I added that functionality Reviewed By: mlord93 Differential Revision: D67106199 fbshipit-source-id: 0b4691768809004043a847f3fc5f7b94e92f1575
98 lines
3.0 KiB
Java
98 lines
3.0 KiB
Java
/*
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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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package com.facebook.yoga.utils;
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import com.facebook.yoga.YogaMeasureMode;
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import com.facebook.yoga.YogaMeasureOutput;
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import com.facebook.yoga.YogaMeasureFunction;
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import com.facebook.yoga.YogaNode;
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import com.facebook.yoga.YogaFlexDirection;
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public class TestUtils {
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public static class intrinsicMeasureFunction implements YogaMeasureFunction {
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private static float widthPerChar = 10;
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private static float heightPerChar = 10;
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@Override
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public long measure(
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YogaNode node,
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float width,
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YogaMeasureMode widthMode,
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float height,
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YogaMeasureMode heightMode) {
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String text = (String) node.getData();
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float measuredWidth;
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float measuredHeight;
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if (widthMode == YogaMeasureMode.EXACTLY) {
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measuredWidth = width;
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} else if (widthMode == YogaMeasureMode.AT_MOST) {
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measuredWidth = Math.min(text.length() * widthPerChar, width);
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} else {
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measuredWidth = text.length() * widthPerChar;
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}
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if (heightMode == YogaMeasureMode.EXACTLY) {
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measuredHeight = height;
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} else if (heightMode == YogaMeasureMode.AT_MOST) {
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measuredHeight =
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Math.min(
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caclulateHeight(text, node.getFlexDirection() == YogaFlexDirection.COLUMN
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? measuredWidth
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: Math.max(measuredWidth, getWidestWordWidth(text))), height);
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} else {
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measuredHeight = caclulateHeight(text, node.getFlexDirection() == YogaFlexDirection.COLUMN
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? measuredWidth
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: Math.max(measuredWidth, getWidestWordWidth(text)));
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}
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return YogaMeasureOutput.make(measuredWidth, measuredHeight);
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}
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static float getWidestWordWidth(String text) {
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int widestWordLength = 0;
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String[] words = text.split(" ");
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for (String word : words) {
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int wordLength = word.length();
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if (widestWordLength < wordLength) {
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widestWordLength = wordLength;
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}
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}
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return (float) widestWordLength * widthPerChar;
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}
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static float caclulateHeight(String text, float measuredWidth) {
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if (text.length() * widthPerChar <= measuredWidth) {
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return heightPerChar;
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}
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String[] words = text.split(" ");
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float lines = 1;
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float currentLineLength = 0;
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for (String word : words) {
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float wordWidth = word.length() * widthPerChar;
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if (wordWidth > measuredWidth) {
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if (currentLineLength > 0) {
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lines++;
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}
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lines++;
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currentLineLength = 0;
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} else if (currentLineLength + wordWidth <= measuredWidth) {
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currentLineLength += wordWidth + widthPerChar;
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} else {
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lines++;
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currentLineLength = wordWidth + widthPerChar;
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}
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}
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return (currentLineLength == 0 ? lines - 1 : lines) * heightPerChar;
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}
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}
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}
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