fix(bmap): bmap event moveend is always triggered when dragging or zoomend.

[plainheart]

Brief Information

This pull request is in the type of:

• bug fixing
• new feature
• others

What does this PR do?

Fix bugs:

• 1. bmap event moveend is always triggered when dragging
• 2. bmap event moveend is triggered when zoomend

Details

Before: What was the problem?

When you added an event listener moveend on bmap, and then try to drag or zoom the map, the moveend event will be always triggered unexpectedly.

Code to Reproduce

var bmap = myChart.getModel().getComponent('bmap').getBMap();
 bmap.addEventListener('moveend', function(e) {
    console.log(e.type);
 });              

Unexpected Result

After: How is it fixed in this PR?

In the file BMapCoordSys.js, before chart layout and render, don't set center and zoom of bmap if both center and zoom are not changed in BMapCoordSys.

Code to Fix

Expected Result

Usage

Related test cases or examples to use the new APIs

Refer to test/bmap2.html

[echarts-bot]

Thanks for your contribution!
The community will review it ASAP. In the meanwhile, please checkout the coding standard and Wiki about How to make a pull request.

[echarts-bot]

Congratulations! Your PR has been merged. Thanks for your contribution! 👍