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fix: ios13 safari z order bug. #522

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merged 1 commit into from
Nov 1, 2019
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fix: ios13 safari z order bug. #522

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10 changes: 8 additions & 2 deletions src/Painter.js
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Original file line number Diff line number Diff line change
Expand Up @@ -80,10 +80,16 @@ function doClip(clipPaths, ctx) {
function createRoot(width, height) {
var domRoot = document.createElement('div');

// domRoot.onselectstart = returnFalse; // 避免页面选中的尴尬
// domRoot.onselectstart = returnFalse; // Avoid page selected
domRoot.style.cssText = [
'position:relative',
'overflow:hidden',
// IOS13 safari probably has a compositing bug (z order of the canvas and the consequent
// dom does not act as expected) when some of the parent dom has
// `-webkit-overflow-scrolling: touch;` and the webpage is longer than one screen and
// the canvas is not at the top part of the page.
// Check `https://bugs.webkit.org/show_bug.cgi?id=203681` for more details. We remove
// this `overflow:hidden` to avoid the bug.
// 'overflow:hidden',
'width:' + width + 'px',
'height:' + height + 'px',
'padding:0',
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