/**
* @module echarts/component/helper/MapDraw
*/
define(function (require) {
var RoamController = require('./RoamController');
var graphic = require('../../util/graphic');
var zrUtil = require('zrender/core/util');
function getFixedItemStyle(model, scale) {
var itemStyle = model.getItemStyle();
var areaColor = model.get('areaColor');
if (areaColor) {
itemStyle.fill = areaColor;
}
return itemStyle;
}
function updateMapSelectHandler(mapOrGeoModel, group, api, fromView) {
group.off('click');
mapOrGeoModel.get('selectedMode')
&& group.on('click', function (e) {
var el = e.target;
while (!el.__region) {
el = el.parent;
}
if (!el) {
return;
}
var region = el.__region;
var action = {
type: (mapOrGeoModel.mainType === 'geo' ? 'geo' : 'map') + 'ToggleSelect',
name: region.name,
from: fromView.uid
};
action[mapOrGeoModel.mainType + 'Id'] = mapOrGeoModel.id;
api.dispatchAction(action);
updateMapSelected(mapOrGeoModel, group);
});
}
function updateMapSelected(mapOrGeoModel, group) {
// FIXME
group.eachChild(function (otherRegionEl) {
if (otherRegionEl.__region) {
otherRegionEl.trigger(mapOrGeoModel.isSelected(otherRegionEl.__region.name) ? 'emphasis' : 'normal');
}
});
}
/**
* @alias module:echarts/component/helper/MapDraw
* @param {module:echarts/ExtensionAPI} api
* @param {boolean} updateGroup
*/
function MapDraw(api, updateGroup) {
var group = new graphic.Group();
/**
* @type {module:echarts/component/helper/RoamController}
* @private
*/
this._controller = new RoamController(
api.getZr(), updateGroup ? group : null, null
);
/**
* @type {module:zrender/container/Group}
* @readOnly
*/
this.group = group;
/**
* @type {boolean}
* @private
*/
this._updateGroup = updateGroup;
}
MapDraw.prototype = {
constructor: MapDraw,
draw: function (mapOrGeoModel, ecModel, api, fromView, payload) {
// geoModel has no data
var data = mapOrGeoModel.getData && mapOrGeoModel.getData();
var geo = mapOrGeoModel.coordinateSystem;
var group = this.group;
var scale = geo.scale;
var groupNewProp = {
position: geo.position,
scale: scale
};
// No animation when first draw or in action
if (!group.childAt(0) || payload) {
group.attr(groupNewProp);
}
else {
graphic.updateProps(group, groupNewProp, mapOrGeoModel);
}
group.removeAll();
var itemStyleAccessPath = ['itemStyle', 'normal'];
var hoverItemStyleAccessPath = ['itemStyle', 'emphasis'];
var labelAccessPath = ['label', 'normal'];
var hoverLabelAccessPath = ['label', 'emphasis'];
zrUtil.each(geo.regions, function (region) {
var regionGroup = new graphic.Group();
var compoundPath = new graphic.CompoundPath({
shape: {
paths: []
}
});
regionGroup.add(compoundPath);
var regionModel = mapOrGeoModel.getRegionModel(region.name) || mapOrGeoModel;
var itemStyleModel = regionModel.getModel(itemStyleAccessPath);
var hoverItemStyleModel = regionModel.getModel(hoverItemStyleAccessPath);
var itemStyle = getFixedItemStyle(itemStyleModel, scale);
var hoverItemStyle = getFixedItemStyle(hoverItemStyleModel, scale);
var labelModel = regionModel.getModel(labelAccessPath);
var hoverLabelModel = regionModel.getModel(hoverLabelAccessPath);
var dataIdx;
// Use the itemStyle in data if has data
if (data) {
dataIdx = data.indexOfName(region.name);
// Only visual color of each item will be used. It can be encoded by dataRange
// But visual color of series is used in symbol drawing
//
// Visual color for each series is for the symbol draw
var visualColor = data.getItemVisual(dataIdx, 'color', true);
if (visualColor) {
itemStyle.fill = visualColor;
}
}
var textStyleModel = labelModel.getModel('textStyle');
var hoverTextStyleModel = hoverLabelModel.getModel('textStyle');
zrUtil.each(region.contours, function (contour) {
var polygon = new graphic.Polygon({
shape: {
points: contour
}
});
compoundPath.shape.paths.push(polygon);
});
compoundPath.setStyle(itemStyle);
compoundPath.style.strokeNoScale = true;
compoundPath.culling = true;
// Label
var showLabel = labelModel.get('show');
var hoverShowLabel = hoverLabelModel.get('show');
var isDataNaN = data && isNaN(data.get('value', dataIdx));
var itemLayout = data && data.getItemLayout(dataIdx);
// In the following cases label will be drawn
// 1. In map series and data value is NaN
// 2. In geo component
// 4. Region has no series legendSymbol, which will be add a showLabel flag in mapSymbolLayout
if (
(!data || isDataNaN && (showLabel || hoverShowLabel))
|| (itemLayout && itemLayout.showLabel)
) {
var query = data ? dataIdx : region.name;
var formattedStr = mapOrGeoModel.getFormattedLabel(query, 'normal');
var hoverFormattedStr = mapOrGeoModel.getFormattedLabel(query, 'emphasis');
var text = new graphic.Text({
style: {
text: showLabel ? (formattedStr || region.name) : '',
fill: textStyleModel.getTextColor(),
textFont: textStyleModel.getFont(),
textAlign: 'center',
textVerticalAlign: 'middle'
},
hoverStyle: {
text: hoverShowLabel ? (hoverFormattedStr || region.name) : '',
fill: hoverTextStyleModel.getTextColor(),
textFont: hoverTextStyleModel.getFont()
},
position: region.center.slice(),
scale: [1 / scale[0], 1 / scale[1]],
z2: 10,
silent: true
});
regionGroup.add(text);
}
// setItemGraphicEl, setHoverStyle after all polygons and labels
// are added to the rigionGroup
if (data) {
data.setItemGraphicEl(dataIdx, regionGroup);
}
else {
var regionModel = mapOrGeoModel.getRegionModel(region.name);
// Package custom mouse event for geo component
compoundPath.eventData = {
componentType: 'geo',
geoIndex: mapOrGeoModel.componentIndex,
name: region.name,
region: (regionModel && regionModel.option) || {}
};
}
regionGroup.__region = region;
graphic.setHoverStyle(regionGroup, hoverItemStyle);
group.add(regionGroup);
});
this._updateController(mapOrGeoModel, ecModel, api);
updateMapSelectHandler(mapOrGeoModel, group, api, fromView);
updateMapSelected(mapOrGeoModel, group);
},
remove: function () {
this.group.removeAll();
this._controller.dispose();
},
_updateController: function (mapOrGeoModel, ecModel, api) {
var geo = mapOrGeoModel.coordinateSystem;
var controller = this._controller;
controller.zoomLimit = mapOrGeoModel.get('scaleLimit');
// Update zoom from model
controller.zoom = geo.getZoom();
// roamType is will be set default true if it is null
controller.enable(mapOrGeoModel.get('roam') || false);
var mainType = mapOrGeoModel.mainType;
function makeActionBase() {
var action = {
type: 'geoRoam',
componentType: mainType
};
action[mainType + 'Id'] = mapOrGeoModel.id;
return action;
}
controller.off('pan')
.on('pan', function (dx, dy) {
api.dispatchAction(zrUtil.extend(makeActionBase(), {
dx: dx,
dy: dy
}));
});
controller.off('zoom')
.on('zoom', function (zoom, mouseX, mouseY) {
api.dispatchAction(zrUtil.extend(makeActionBase(), {
zoom: zoom,
originX: mouseX,
originY: mouseY
}));
if (this._updateGroup) {
var group = this.group;
var scale = group.scale;
group.traverse(function (el) {
if (el.type === 'text') {
el.attr('scale', [1 / scale[0], 1 / scale[1]]);
}
});
}
}, this);
controller.rectProvider = function () {
return geo.getViewRectAfterRoam();
};
}
};
return MapDraw;
});
|
Download
