Viewing File: /home/cienp/public_html/portal/vendors/echarts/src/component/toolbox/feature/DataZoom.js
define(function(require) {
'use strict';
var zrUtil = require('zrender/core/util');
var numberUtil = require('../../../util/number');
var SelectController = require('../../helper/SelectController');
var BoundingRect = require('zrender/core/BoundingRect');
var Group = require('zrender/container/Group');
var history = require('../../dataZoom/history');
var interactionMutex = require('../../helper/interactionMutex');
var each = zrUtil.each;
var asc = numberUtil.asc;
// Use dataZoomSelect
require('../../dataZoomSelect');
// Spectial component id start with \0ec\0, see echarts/model/Global.js~hasInnerId
var DATA_ZOOM_ID_BASE = '\0_ec_\0toolbox-dataZoom_';
function DataZoom(model) {
this.model = model;
/**
* @private
* @type {module:zrender/container/Group}
*/
this._controllerGroup;
/**
* @private
* @type {module:echarts/component/helper/SelectController}
*/
this._controller;
/**
* Is zoom active.
* @private
* @type {Object}
*/
this._isZoomActive;
}
DataZoom.defaultOption = {
show: true,
// Icon group
icon: {
zoom: 'M0,13.5h26.9 M13.5,26.9V0 M32.1,13.5H58V58H13.5 V32.1',
back: 'M22,1.4L9.9,13.5l12.3,12.3 M10.3,13.5H54.9v44.6 H10.3v-26'
},
title: {
zoom: '区域缩放',
back: '区域缩放还原'
}
};
var proto = DataZoom.prototype;
proto.render = function (featureModel, ecModel, api) {
updateBackBtnStatus(featureModel, ecModel);
};
proto.onclick = function (ecModel, api, type) {
var controllerGroup = this._controllerGroup;
if (!this._controllerGroup) {
controllerGroup = this._controllerGroup = new Group();
api.getZr().add(controllerGroup);
}
handlers[type].call(this, controllerGroup, this.model, ecModel, api);
};
proto.remove = function (ecModel, api) {
this._disposeController();
interactionMutex.release('globalPan', api.getZr());
};
proto.dispose = function (ecModel, api) {
var zr = api.getZr();
interactionMutex.release('globalPan', zr);
this._disposeController();
this._controllerGroup && zr.remove(this._controllerGroup);
};
/**
* @private
*/
var handlers = {
zoom: function (controllerGroup, featureModel, ecModel, api) {
var isZoomActive = this._isZoomActive = !this._isZoomActive;
var zr = api.getZr();
interactionMutex[isZoomActive ? 'take' : 'release']('globalPan', zr);
featureModel.setIconStatus('zoom', isZoomActive ? 'emphasis' : 'normal');
if (isZoomActive) {
zr.setDefaultCursorStyle('crosshair');
this._createController(
controllerGroup, featureModel, ecModel, api
);
}
else {
zr.setDefaultCursorStyle('default');
this._disposeController();
}
},
back: function (controllerGroup, featureModel, ecModel, api) {
this._dispatchAction(history.pop(ecModel), api);
}
};
/**
* @private
*/
proto._createController = function (
controllerGroup, featureModel, ecModel, api
) {
var controller = this._controller = new SelectController(
'rect',
api.getZr(),
{
// FIXME
lineWidth: 3,
stroke: '#333',
fill: 'rgba(0,0,0,0.2)'
}
);
controller.on(
'selectEnd',
zrUtil.bind(
this._onSelected, this, controller,
featureModel, ecModel, api
)
);
controller.enable(controllerGroup, false);
};
proto._disposeController = function () {
var controller = this._controller;
if (controller) {
controller.off('selected');
controller.dispose();
}
};
function prepareCoordInfo(grid, ecModel) {
// Default use the first axis.
// FIXME
var coordInfo = [
{axisModel: grid.getAxis('x').model, axisIndex: 0}, // x
{axisModel: grid.getAxis('y').model, axisIndex: 0} // y
];
coordInfo.grid = grid;
ecModel.eachComponent(
{mainType: 'dataZoom', subType: 'select'},
function (dzModel, dataZoomIndex) {
if (isTheAxis('xAxis', coordInfo[0].axisModel, dzModel, ecModel)) {
coordInfo[0].dataZoomModel = dzModel;
}
if (isTheAxis('yAxis', coordInfo[1].axisModel, dzModel, ecModel)) {
coordInfo[1].dataZoomModel = dzModel;
}
}
);
return coordInfo;
}
function isTheAxis(axisName, axisModel, dataZoomModel, ecModel) {
var axisIndex = dataZoomModel.get(axisName + 'Index');
return axisIndex != null
&& ecModel.getComponent(axisName, axisIndex) === axisModel;
}
/**
* @private
*/
proto._onSelected = function (controller, featureModel, ecModel, api, selRanges) {
if (!selRanges.length) {
return;
}
var selRange = selRanges[0];
controller.update(); // remove cover
var snapshot = {};
// FIXME
// polar
ecModel.eachComponent('grid', function (gridModel, gridIndex) {
var grid = gridModel.coordinateSystem;
var coordInfo = prepareCoordInfo(grid, ecModel);
var selDataRange = pointToDataInCartesian(selRange, coordInfo);
if (selDataRange) {
var xBatchItem = scaleCartesianAxis(selDataRange, coordInfo, 0, 'x');
var yBatchItem = scaleCartesianAxis(selDataRange, coordInfo, 1, 'y');
xBatchItem && (snapshot[xBatchItem.dataZoomId] = xBatchItem);
yBatchItem && (snapshot[yBatchItem.dataZoomId] = yBatchItem);
}
}, this);
history.push(ecModel, snapshot);
this._dispatchAction(snapshot, api);
};
function pointToDataInCartesian(selRange, coordInfo) {
var grid = coordInfo.grid;
var selRect = new BoundingRect(
selRange[0][0],
selRange[1][0],
selRange[0][1] - selRange[0][0],
selRange[1][1] - selRange[1][0]
);
if (!selRect.intersect(grid.getRect())) {
return;
}
var cartesian = grid.getCartesian(coordInfo[0].axisIndex, coordInfo[1].axisIndex);
var dataLeftTop = cartesian.pointToData([selRange[0][0], selRange[1][0]], true);
var dataRightBottom = cartesian.pointToData([selRange[0][1], selRange[1][1]], true);
return [
asc([dataLeftTop[0], dataRightBottom[0]]), // x, using asc to handle inverse
asc([dataLeftTop[1], dataRightBottom[1]]) // y, using asc to handle inverse
];
}
function scaleCartesianAxis(selDataRange, coordInfo, dimIdx, dimName) {
var dimCoordInfo = coordInfo[dimIdx];
var dataZoomModel = dimCoordInfo.dataZoomModel;
if (dataZoomModel) {
return {
dataZoomId: dataZoomModel.id,
startValue: selDataRange[dimIdx][0],
endValue: selDataRange[dimIdx][1]
};
}
}
/**
* @private
*/
proto._dispatchAction = function (snapshot, api) {
var batch = [];
each(snapshot, function (batchItem) {
batch.push(batchItem);
});
batch.length && api.dispatchAction({
type: 'dataZoom',
from: this.uid,
batch: zrUtil.clone(batch, true)
});
};
function updateBackBtnStatus(featureModel, ecModel) {
featureModel.setIconStatus(
'back',
history.count(ecModel) > 1 ? 'emphasis' : 'normal'
);
}
require('../featureManager').register('dataZoom', DataZoom);
// Create special dataZoom option for select
require('../../../echarts').registerPreprocessor(function (option) {
if (!option) {
return;
}
var dataZoomOpts = option.dataZoom || (option.dataZoom = []);
if (!zrUtil.isArray(dataZoomOpts)) {
option.dataZoom = dataZoomOpts = [dataZoomOpts];
}
var toolboxOpt = option.toolbox;
if (toolboxOpt) {
// Assume there is only one toolbox
if (zrUtil.isArray(toolboxOpt)) {
toolboxOpt = toolboxOpt[0];
}
if (toolboxOpt && toolboxOpt.feature) {
var dataZoomOpt = toolboxOpt.feature.dataZoom;
addForAxis('xAxis', dataZoomOpt);
addForAxis('yAxis', dataZoomOpt);
}
}
function addForAxis(axisName, dataZoomOpt) {
if (!dataZoomOpt) {
return;
}
var axisIndicesName = axisName + 'Index';
var givenAxisIndices = dataZoomOpt[axisIndicesName];
if (givenAxisIndices != null && !zrUtil.isArray(givenAxisIndices)) {
givenAxisIndices = givenAxisIndices === false ? [] : [givenAxisIndices];
}
forEachComponent(axisName, function (axisOpt, axisIndex) {
if (givenAxisIndices != null
&& zrUtil.indexOf(givenAxisIndices, axisIndex) === -1
) {
return;
}
var newOpt = {
type: 'select',
$fromToolbox: true,
// Id for merge mapping.
id: DATA_ZOOM_ID_BASE + axisName + axisIndex
};
// FIXME
// Only support one axis now.
newOpt[axisIndicesName] = axisIndex;
dataZoomOpts.push(newOpt);
});
}
function forEachComponent(mainType, cb) {
var opts = option[mainType];
if (!zrUtil.isArray(opts)) {
opts = opts ? [opts] : [];
}
each(opts, cb);
}
});
return DataZoom;
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