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‎App.tsx

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/**
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* Sample React Native App
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* https://github.com/facebook/react-native
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*
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* @format
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*/
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// useEffect:模拟声明周期
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import React, { useState, useEffect } from 'react';
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import type { PropsWithChildren } from 'react';
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import {
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ActivityIndicator,
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Dimensions,
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Platform,
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SafeAreaView,
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ScrollView,
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StatusBar,
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StyleSheet,
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Switch,
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Text,
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TextInput,
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useColorScheme,
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View,
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LayoutChangeEvent,
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} from 'react-native';
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import {
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Colors,
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DebugInstructions,
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Header,
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LearnMoreLinks,
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ReloadInstructions,
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} from 'react-native/Libraries/NewAppScreen';
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import rnTextSize from 'react-native-text-size';
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import flatHeights from 'react-native-text-size';
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import TextSize, {
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// typings
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TSFontInfo,
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TSFontForStyle,
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TSFontSpecs,
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TSFontStyle,
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TSFontVariant,
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TSFontWeight,
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TSMeasureResult,
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TSTextBreakStrategy,
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} from 'react-native-text-size';
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function App(): React.JSX.Element {
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type Props = { texts: string[] }
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type State = { heights: number[] }
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type Props1 = {}
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type State2 = { width2: number, height2: number }
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const [heights, setHeights] = useState<number[]>([]);
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const [width2, setWidth2] = useState<number>();
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const [height2, setHeight2] = useState<number>();
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const [texts, setTexts] = useState(['I ❤️ rnTextSize', 'I ❤️ rnTextSize using flatHeights', 'Thx for flatHeights', 'test123',])
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const [texts2, setTexts2] = useState('I ❤️ rnTextSize')
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const [res, setRes] = useState<string[]>([])
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const [key, setKey] = useState({})
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const [info, setInfo] = useState<TSFontInfo>()
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const fontSpecs: TSFontSpecs = {
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fontFamily: undefined,
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fontSize: 20,
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fontStyle: 'italic', //正斜
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fontWeight: 'bold',
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}
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const fontSpecs2: TSFontSpecs = {
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fontFamily: 'Android',
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textBreakStrategy: 'balanced',
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}
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const fontSpecs3: TSFontSpecs = {
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fontFamily: undefined,
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fontSize: 20,
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fontStyle: 'normal', //正斜
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fontWeight: '700',
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}
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useEffect(() => {
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const myFun = async () => {
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const resp = await rnTextSize.fontFamilyNames();
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setRes(resp)
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const keyp = await rnTextSize.specsForTextStyles();
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setKey(keyp)
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const infos = await rnTextSize.fontFromSpecs(fontSpecs2);
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setInfo(infos)
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setTexts(texts)
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const width = Dimensions.get('window').width * 0.8
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const newHeights = await rnTextSize.flatHeights({
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text: texts, // array of texts to measure, can include symbols
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width, // max-width of the "virtual" container
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...fontSpecs, // RN font specification
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})
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setHeights(newHeights);
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setTexts2(texts2)
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const width2 = Dimensions.get('window').width * 0.8
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const newHeight2 = await rnTextSize.measure({
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text: texts2, // array of texts to measure, can include symbols
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width: width2, // max-width of the "virtual" container
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...fontSpecs3, // RN font specification
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})
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setHeight2(newHeight2.height);
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setWidth2(newHeight2.width)
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}
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myFun()
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}, [])
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return (
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<ScrollView style={{ flexGrow: 1 }}>
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<View style={{ paddingLeft: 12, paddingRight: 12 }}>
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<Text>
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------------------------------
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---------------
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measure接口:[fontFamily: undefined,fontSize: 20,fontStyle: 'normal', 正斜fontWeight: '700']
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</Text>
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<View>
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<Text style={{
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width: width2,
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height: height2,
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...fontSpecs3
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}}>
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{texts2}
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</Text>
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</View>
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<Text>
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----------------
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flatHeights接口:[fontFamily: undefined,fontSize: 20,fontStyle: 'italic', fontWeight: 'bold']
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</Text>
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{texts.map(
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(text, index) => (
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<Text style={{ height: heights[index], ...fontSpecs }}>
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{text}
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</Text>
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)
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)}
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<Text>
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----------------fontFamilyNames接口:获取系统默认配置的字体
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</Text>
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<Text>
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{res}
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</Text>
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<Text>
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----------------specsForTextStyles接口:获取系统默认配置的字体的具体信息
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</Text>
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<Text>
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{JSON.stringify(key)}
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</Text>
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<Text>
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----------------fontFromSpecs:返回从给定规范中获得的字体特征
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</Text>
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<Text>
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{JSON.stringify(info)}
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</Text>
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</View>
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</ScrollView>
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)
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}
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export default App;

‎harmony/text_size.har

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‎harmony/text_size/BuildProfile.ets

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export default class BuildProfile {
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static readonly BUNDLE_NAME = 'com.rnoh.tester';
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static readonly VERSION_CODE = 1000000;
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static readonly VERSION_NAME = '1.0.0';
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static readonly HAR_VERSION = '1.0.0';
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static readonly BUILD_MODE_NAME = 'Debug';
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static readonly DEBUG = true;
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}

‎harmony/text_size/Index.ets

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export * from './ts'

‎harmony/text_size/build-profile.json5

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{
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"apiType": "stageMode",
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"targets": [
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{
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"name": "default",
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"runtimeOS": "HarmonyOS"
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}
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]
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}

‎harmony/text_size/hvigorfile.ts

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// Script for compiling build behavior. It is built in the build plug-in and cannot be modified currently.
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export { harTasks } from '@ohos/hvigor-ohos-plugin';

‎harmony/text_size/obfuscation-rules.txt

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# Define project specific obfuscation rules here.
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# You can include the obfuscation configuration files in the current module's build-profile.json5.
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#
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# For more details, see
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# https://gitee.com/openharmony/arkcompiler_ets_frontend/blob/master/arkguard/README.md
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# Obfuscation options:
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# -disable-obfuscation: disable all obfuscations
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# -enable-property-obfuscation: obfuscate the property names
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# -enable-toplevel-obfuscation: obfuscate the names in the global scope
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# -compact: remove unnecessary blank spaces and all line feeds
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# -remove-log: remove all console.* statements
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# -print-namecache: print the name cache that contains the mapping from the old names to new names
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# -apply-namecache: reuse the given cache file
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# Keep options:
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# -keep-property-name: specifies property names that you want to keep
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# -keep-global-name: specifies names that you want to keep in the global scope

‎harmony/text_size/oh-package.json5

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{
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"license": "MIT",
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"devDependencies": {
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},
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"author": "",
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"name": "rnoh-text-size",
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"description": "Please describe the basic information.",
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"main": "index.ets",
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"version": "1.0.0",
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"dependencies": {
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"rnoh": "file:../rnoh"
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}
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}

‎harmony/text_size/src/main/cpp/CMakeLists.txt

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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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cmake_minimum_required(VERSION 3.13)
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set(CMAKE_VERBOSE_MAKEFILE on)
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file(GLOB rnoh_text_size_SRC CONFIGURE_DEPENDS *.cpp)
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add_library(rnoh_text_size SHARED ${rnoh_text_size_SRC})
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target_include_directories(rnoh_text_size PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
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target_link_libraries(rnoh_text_size PUBLIC rnoh)

‎harmony/text_size/src/main/cpp/RNTextSizePackage.h

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/**
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* MIT License
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*
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* Copyright (C) 2024 Huawei Device Co., Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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# pragma once
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# include "RNOH/Package.h"
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# include "RNTextSizeTurboModule.h"
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using namespace rnoh;
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using namespace facebook;
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class RNTextSizeTurboModuleFactoryDelegate : public TurboModuleFactoryDelegate {
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public:
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SharedTurboModule createTurboModule(Context ctx, const std::string &name) const override
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{
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if (name == "RTNTextSize") {
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return std::make_shared<RNTextSizeTurboModule>(ctx, name);
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}
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return nullptr;
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};
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};
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namespace rnoh {
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class RNTextSizePackage : public Package {
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public:
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RNTextSizePackage(Package::Context ctx) : Package(ctx) {}
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std::unique_ptr<TurboModuleFactoryDelegate> createTurboModuleFactoryDelegate() override
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{
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return std::make_unique<RNTextSizeTurboModuleFactoryDelegate>();
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}
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};
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} // namespace rnoh

‎harmony/text_size/src/main/cpp/RNTextSizeTurboModule.cpp

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/**
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* MIT License
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*
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* Copyright (C) 2023 Huawei Device Co., Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "RNTextSizeTurbomodule.h"
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#include "RNOH/ArkTSTurboModule.h"
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using namespace rnoh;
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using namespace facebook;
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static jsi::Value __hostFunction_RNTextSizeTurboModule_measure(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "measure", args, count);
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}
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static jsi::Value __hostFunction_RNTextSizeTurboModule_flatHeights(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "flatHeights", args, count);
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}
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static jsi::Value __hostFunction_RNTextSizeTurboModule_specsForTextStyles(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "specsForTextStyles", args, count);
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}
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static jsi::Value __hostFunction_RNTextSizeTurboModule_fontFromSpecs(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "fontFromSpecs", args, count);
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}
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static jsi::Value __hostFunction_RNTextSizeTurboModule_fontFamilyNames(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "fontFamilyNames", args, count);
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}
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static jsi::Value __hostFunction_RNTextSizeTurboModule_fontNamesForFamilyName(jsi::Runtime &rt,
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react::TurboModule &turboModule,
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const jsi::Value *args, size_t count)
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{
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return static_cast<ArkTSTurboModule &>(turboModule).callAsync(rt, "fontNamesForFamilyName", args, count);
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}
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RNTextSizeTurboModule::RNTextSizeTurboModule(const ArkTSTurboModule::Context ctx, const std::string name)
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: ArkTSTurboModule(ctx, name)
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{
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methodMap_["measure"] = MethodMetadata{1, __hostFunction_RNTextSizeTurboModule_measure};
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methodMap_["flatHeights"] = MethodMetadata{1, __hostFunction_RNTextSizeTurboModule_flatHeights};
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methodMap_["specsForTextStyles"] = MethodMetadata{0, __hostFunction_RNTextSizeTurboModule_specsForTextStyles};
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methodMap_["fontFromSpecs"] = MethodMetadata{1, __hostFunction_RNTextSizeTurboModule_fontFromSpecs};
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methodMap_["fontFamilyNames"] = MethodMetadata{0, __hostFunction_RNTextSizeTurboModule_fontFamilyNames};
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methodMap_["fontNamesForFamilyName"] = MethodMetadata{1, __hostFunction_RNTextSizeTurboModule_fontNamesForFamilyName};
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}

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