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Posted to commits@echarts.apache.org by GitBox <gi...@apache.org> on 2020/06/18 09:33:27 UTC
[GitHub] [incubator-echarts] tikeyc opened a new issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
tikeyc opened a new issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823
### Version
4.8.0
### Steps to reproduce
直接使用官网的列子：https://echarts.apache.org/examples/zh/editor.html?c=mix-zoom-on-value
在触屏的电脑或大屏显示器上无法拖动节点。
发现在此之前有人提过类似的问题，
#9301（https://github.com/apache/incubator-echarts/issues/9301）
#7406（https://github.com/apache/incubator-echarts/issues/7406）
#12166（https://github.com/apache/incubator-echarts/issues/12166）
### What is expected?
但更新到echarts4.8.0版本.无法拖动的问题依然存在。只有去修改源码将touchEventsSupported的值强制设置成true后问题便得到了解决。
### What is actually happening?
*
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-650989909
@plainheart
使用的浏览器是: Chrome;
navigator.userAgent的值是："Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36"
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[GitHub] [incubator-echarts] plainheart edited a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart edited a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-645973348
> 但更新到echarts4.8.0版本.无法拖动的问题依然存在。只有去修改源码将touchEventsSupported的值强制设置成true后问题便得到了解决。
如果按照你说的将`touchEventsSupported`设置为`true`即可解决该问题，那么很有可能是在判断环境是否支持触摸事件的逻辑上存在bug，导致echarts认为当前环境不支持`touchEvents`，有待验证。
https://github.com/ecomfe/zrender/blob/master/src/core/env.js#L149
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646397195
@plainheart
window.matchMedia("(pointer: coarse)").matches的返回结果是false
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[GitHub] [incubator-echarts] tikeyc edited a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc edited a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646387475
@plainheart
您好，在大屏触摸显示器上验证了，输出结果都是undefined见附件的图片（图片通过邮件发送的），感谢。
增加了 "ontouchstart" in window的验证结果，结果为false（图片通过邮件发送的）
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[GitHub] [incubator-echarts] tikeyc removed a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc removed a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646394047
增加了 "ontouchstart" in window的验证结果，结果为false
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[GitHub] [incubator-echarts] tikeyc edited a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc edited a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646386600
@plainheart
您好。使用可以触屏的大屏显示器，在控制台打印了结果：
window.DocumentTouch && document instanceof DocumentTouch 的结果是：undefined
window 对象中是否有 ontouchstart 函数的结果是：false
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646386600
@plainheart
您好。使用可以触屏的大屏显示器，在控制台打印了window.DocumentTouch && document instanceof DocumentTouch 的结果，以及window 对象中是否有 ontouchstart 函数。
得出的结果都是undefined
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646394047
增加了 "ontouchstart" in window的验证结果，结果为false
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-647217829
@plainheart
您好，请问有好的解决方案吗？
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[GitHub] [incubator-echarts] plainheart commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-647221129
抱歉暂时没有，不确定是否能够修复，这可能需要进行讨论，目前如果确定设备支持触屏，还是建议先手动设置 `touchEventsSupported`为`true`。
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[GitHub] [incubator-echarts] tikeyc edited a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc edited a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646387475
您好，在大屏触摸显示器上验证了，输出结果都是undefined见附件的图片（图片通过邮件发送的），感谢。
增加了 "ontouchstart" in window的验证结果，结果为false（图片通过邮件发送的）
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[GitHub] [incubator-echarts] echarts-bot[bot] commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
echarts-bot[bot] commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-645902251
Hi! We've received your issue and please be patient to get responded. 🎉
The average response time is expected to be within one day for weekdays.
In the meanwhile, please make sure that **you have posted enough image to demo your request**. You may also check out the [API](http://echarts.apache.org/api.html) and [chart option](http://echarts.apache.org/option.html) to get the answer.
If you don't get helped for a long time (over a week) or have an urgent question to ask, you may also send an email to dev@echarts.apache.org. Please attach the issue link if it's a technical questions.
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Have a nice day! 🍵
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[GitHub] [incubator-echarts] plainheart commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-645986599
@tikeyc 麻烦您使用所拥有的触屏或大屏显示器帮助验证以下问题：
- `window.DocumentTouch && document instanceof DocumentTouch` 的结果是否为 `true`
- `window` 对象中是否有 `ontouchstart` 函数
通过[StackOverflow](https://stackoverflow.com/questions/4817029/whats-the-best-way-to-detect-a-touch-screen-device-using-javascript)上的讨论，似乎很难有一种能适用于各种情况的方案。
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[GitHub] [incubator-echarts] tikeyc commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646387475
您好，在大屏触摸显示器上验证了，输出结果都是undefined见附件的图片。感谢。
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[GitHub] [incubator-echarts] tikeyc edited a comment on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
tikeyc edited a comment on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646387475
您好，在大屏触摸显示器上验证了，输出结果都是undefined见附件的图片（图片通过邮件发送的），感谢。
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[GitHub] [incubator-echarts] plainheart commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-646394989
@tikeyc `window.matchMedia("(pointer: coarse)").matches`的返回结果是否为`true`？
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[GitHub] [incubator-echarts] plainheart commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-645973348
> 但更新到echarts4.8.0版本.无法拖动的问题依然存在。只有去修改源码将touchEventsSupported的值强制设置成true后问题便得到了解决。
如果按照你说的将`touchEventsSupported`设置为`true`即可解决该问题，那么很有可能是在判断环境是否支持触摸事件的逻辑上存在bug，导致echarts认为当前环境不支持`touchEvents`，有待验证。
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[GitHub] [incubator-echarts] plainheart commented on issue #12823: 在触屏的电脑或大屏显示器上无法拖动节点
Posted by GitBox <gi...@apache.org>.
plainheart commented on issue #12823:
URL: https://github.com/apache/incubator-echarts/issues/12823#issuecomment-650902027
@tikeyc Hi~ 能否告知下使用的浏览器以及浏览器的 `navigator.userAgent` ？
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