fix(handler): fix global out not work bug. #693
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fix apache/echarts#13958
Why this bug happens:
This bug is brought when fixing the wrong
mouseoutevent triggered in SVG renderer in https://github.com/ecomfe/zrender/compare/fix-global-out?expand=1#diff-619a90e06ad2f3966dac739e2d1fb17006d9f44978316c758d694a40cde28201L222But in canvas renderer, the
event.targetwill is the canvas element when mouseout. Not the viewport. So theglobaloutwill never be triggered.Fix:
Determine if the target element is a descendant of the viewport. If so, both
mouseoutandglobaloutevent won't be triggered.