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@@ -1,6 +1,6 @@
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'use strict';
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2
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2
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3
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-import { Dimensions, Platform } from 'react-native';
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+import { Dimensions } from 'react-native';
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4
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4
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const domMutationObserveScript = `
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var MutationObserver =
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@@ -14,6 +14,9 @@ const domMutationObserveScript = `
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const updateSizeWithMessage = (element, scalesPageToFit) =>
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`
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+ var usingScale = 0;
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+ var scaling = false;
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+ var zoomedin = false;
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var lastHeight = 0;
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var heightTheSameTimes = 0;
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var maxHeightTheSameTimes = 5;
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@@ -21,7 +24,10 @@ const updateSizeWithMessage = (element, scalesPageToFit) =>
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var forceRefreshTimeout;
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var checkPostMessageTimeout;
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- function updateSize(event) {
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+ function updateSize() {
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+ if (zoomedin || scaling) {
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+ return;
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+ }
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if (
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!window.hasOwnProperty('ReactNativeWebView') ||
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!window.ReactNativeWebView.hasOwnProperty('postMessage')
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@@ -29,14 +35,20 @@ const updateSizeWithMessage = (element, scalesPageToFit) =>
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checkPostMessageTimeout = setTimeout(updateSize, 200);
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return;
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}
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+
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clearTimeout(checkPostMessageTimeout);
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height = ${element}.offsetHeight || document.documentElement.offsetHeight;
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width = ${element}.offsetWidth || document.documentElement.offsetWidth;
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35
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- var scale = ${scalesPageToFit ? 'screen.width / window.innerWidth' : '1'};
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36
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- window.ReactNativeWebView.postMessage(JSON.stringify({ width: Math.min(width, screen.width), height: height * scale }));
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+
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+ if(!usingScale && window.innerWidth) {
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+ usingScale = ${scalesPageToFit ? 'screen.width / window.innerWidth' : '1'};
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+ }
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+
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+ window.ReactNativeWebView.postMessage(JSON.stringify({ width: Math.min(width, screen.width), height: height * usingScale }));
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48
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// Make additional height checks (required to fix issues wit twitter embeds)
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clearTimeout(forceRefreshTimeout);
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+
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if (lastHeight !== height) {
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heightTheSameTimes = 1;
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} else {
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@@ -67,20 +79,29 @@ const setViewportContent = content => {
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};
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const detectZoomChanged = `
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- var zoomedin = false;
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var latestTapStamp = 0;
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- var lastScale = false;
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+ var lastScale = 1.0;
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var doubleTapDelay = 400;
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function detectZoomChanged() {
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- var tempZoomedin = (screen.width / window.innerWidth) > 1;
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+ var tempZoomedin = (screen.width / window.innerWidth) > (usingScale || 1);
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tempZoomedin !== zoomedin && window.ReactNativeWebView.postMessage(JSON.stringify({ zoomedin: tempZoomedin }));
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zoomedin = tempZoomedin;
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}
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+ window.addEventListener('ontouchstart', event => {
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+ if (event.touches.length === 2) {
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+ scaling = true;
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+ }
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+ })
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window.addEventListener('touchend', event => {
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+ if(scaling) {
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+ scaleing = false;
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+ }
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+
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var tempScale = event.scale;
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tempScale !== lastScale && detectZoomChanged();
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lastScale = tempScale;
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var timeSince = new Date().getTime() - latestTapStamp;
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+
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// double tap
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if(timeSince < 600 && timeSince > 0) {
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zoomedinTimeOut = setTimeout(() => {
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@@ -88,11 +109,12 @@ const detectZoomChanged = `
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detectZoomChanged();
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}, doubleTapDelay);
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}
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+
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latestTapStamp = new Date().getTime();
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});
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`;
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-const getBaseScript = ({ style, viewportContent, scalesPageToFit, scrollEnabledWithZoomedin }) =>
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+const getBaseScript = ({ viewportContent, scalesPageToFit, scrollEnabledWithZoomedin }) =>
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`
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;
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if (!document.getElementById("rnahw-wrapper")) {
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@@ -165,7 +187,7 @@ const getScript = ({
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scalesPageToFit,
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scrollEnabledWithZoomedin
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}) => {
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- let script = getBaseScript({ style, viewportContent, scalesPageToFit, scrollEnabledWithZoomedin });
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190
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+ let script = getBaseScript({ viewportContent, scalesPageToFit, scrollEnabledWithZoomedin });
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script = files && files.length > 0 ? appendFilesToHead({ files, script }) : script;
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script = appendStylesToHead({ style: customStyle, script });
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customScript && (script = customScript + script);
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iou90
5 年之前