AMapView.js
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/*
* this function bollowed from:
* https://github.com/Leaflet/Leaflet/blob/master/src/core/Util.js
*/
function throttle(fn, time, context) {
var lock, args, wrapperFn, later;
later = function () {
// reset lock and call if queued
lock = false;
if (args) {
wrapperFn.apply(context, args);
args = false;
}
};
wrapperFn = function () {
if (lock) {
// called too soon, queue to call later
args = arguments;
} else {
// call and lock until later
fn.apply(context, arguments);
setTimeout(later, time);
lock = true;
}
};
return wrapperFn;
}
var echarts = require('echarts');
module.exports = require('echarts').extendComponentView({
type: 'amap',
render: function (aMapModel, ecModel, api) {
var rendering = true;
var amap = aMapModel.getAMap();
var viewportRoot = api.getZr().painter.getViewportRoot();
var coordSys = aMapModel.coordinateSystem;
var moveHandler = function (e) {
if (rendering) {
return;
}
var offsetEl = viewportRoot.parentNode.parentNode.parentNode;
var mapOffset = [
-parseInt(offsetEl.style.left, 10) || 0,
-parseInt(offsetEl.style.top, 10) || 0
];
viewportRoot.style.left = mapOffset[0] + 'px';
viewportRoot.style.top = mapOffset[1] + 'px';
coordSys.setMapOffset(mapOffset);
aMapModel.__mapOffset = mapOffset;
api.dispatchAction({
type: 'amapRoam'
});
};
function zoomEndHandler() {
if (rendering) {
return;
}
api.dispatchAction({
type: 'amapRoam'
});
}
function resizeHandler(e) {
echarts.getInstanceByDom(api.getDom()).resize();
moveHandler.call(this, e)
}
var throttledResizeHandler = throttle(resizeHandler, 300, amap);
amap.off('movestart', this._oldMoveHandler);
amap.off('zoomend', this._oldZoomEndHandler);
amap.off('moveend', this._oldZoomEndHandler);
amap.off('complete', this._oldZoomEndHandler);
aMapModel.get('resizeEnable') && amap.off('resize', this._oldResizeHandler);
amap.on('movestart', moveHandler);
amap.on('zoomend', zoomEndHandler);
amap.on('moveend', zoomEndHandler);
amap.on('complete', zoomEndHandler);
aMapModel.get('resizeEnable') && amap.on('resize', throttledResizeHandler);
this._oldMoveHandler = moveHandler;
this._oldZoomEndHandler = zoomEndHandler;
this._oldResizeHandler = throttledResizeHandler;
// var roam = aMapModel.get('roam');
// if (roam && roam !== 'scale') {
// amap.enableDragging();
// }
// else {
// amap.disableDragging();
// }
// if (roam && roam !== 'move') {
// amap.enableScrollWheelZoom();
// amap.enableDoubleClickZoom();
// amap.enablePinchToZoom();
// }
// else {
// amap.disableScrollWheelZoom();
// amap.disableDoubleClickZoom();
// amap.disablePinchToZoom();
// }
rendering = false;
}
});