define(function (require) {
var zrUtil = require('zrender/core/util');
var graphic = require('../../util/graphic');
var throttle = require('../../util/throttle');
var DataZoomView = require('./DataZoomView');
var Rect = graphic.Rect;
var numberUtil = require('../../util/number');
var linearMap = numberUtil.linearMap;
var layout = require('../../util/layout');
var sliderMove = require('../helper/sliderMove');
var asc = numberUtil.asc;
var bind = zrUtil.bind;
var mathRound = Math.round;
var mathMax = Math.max;
var each = zrUtil.each;
// Constants
var DEFAULT_LOCATION_EDGE_GAP = 7;
var DEFAULT_FRAME_BORDER_WIDTH = 1;
var DEFAULT_FILLER_SIZE = 30;
var HORIZONTAL = 'horizontal';
var VERTICAL = 'vertical';
var LABEL_GAP = 5;
var SHOW_DATA_SHADOW_SERIES_TYPE = ['line', 'bar', 'candlestick', 'scatter'];
var SliderZoomView = DataZoomView.extend({
type: 'dataZoom.slider',
init: function (ecModel, api) {
/**
* @private
* @type {Object}
*/
this._displayables = {};
/**
* @private
* @type {string}
*/
this._orient;
/**
* [0, 100]
* @private
*/
this._range;
/**
* [coord of the first handle, coord of the second handle]
* @private
*/
this._handleEnds;
/**
* [length, thick]
* @private
* @type {Array.<number>}
*/
this._size;
/**
* @private
* @type {number}
*/
this._halfHandleSize;
/**
* @private
*/
this._location;
/**
* @private
*/
this._dragging;
/**
* @private
*/
this._dataShadowInfo;
this.api = api;
},
/**
* @override
*/
render: function (dataZoomModel, ecModel, api, payload) {
SliderZoomView.superApply(this, 'render', arguments);
throttle.createOrUpdate(
this,
'_dispatchZoomAction',
this.dataZoomModel.get('throttle'),
'fixRate'
);
this._orient = dataZoomModel.get('orient');
this._halfHandleSize = mathRound(dataZoomModel.get('handleSize') / 2);
if (this.dataZoomModel.get('show') === false) {
this.group.removeAll();
return;
}
// Notice: this._resetInterval() should not be executed when payload.type
// is 'dataZoom', origin this._range should be maintained, otherwise 'pan'
// or 'zoom' info will be missed because of 'throttle' of this.dispatchAction,
if (!payload || payload.type !== 'dataZoom' || payload.from !== this.uid) {
this._buildView();
}
this._updateView();
},
/**
* @override
*/
remove: function () {
SliderZoomView.superApply(this, 'remove', arguments);
throttle.clear(this, '_dispatchZoomAction');
},
/**
* @override
*/
dispose: function () {
SliderZoomView.superApply(this, 'dispose', arguments);
throttle.clear(this, '_dispatchZoomAction');
},
_buildView: function () {
var thisGroup = this.group;
thisGroup.removeAll();
this._resetLocation();
this._resetInterval();
var barGroup = this._displayables.barGroup = new graphic.Group();
this._renderBackground();
this._renderDataShadow();
this._renderHandle();
thisGroup.add(barGroup);
this._positionGroup();
},
/**
* @private
*/
_resetLocation: function () {
var dataZoomModel = this.dataZoomModel;
var api = this.api;
// If some of x/y/width/height are not specified,
// auto-adapt according to target grid.
var coordRect = this._findCoordRect();
var ecSize = {width: api.getWidth(), height: api.getHeight()};
// Default align by coordinate system rect.
var positionInfo = this._orient === HORIZONTAL
? {
// Why using 'right', because right should be used in vertical,
// and it is better to be consistent for dealing with position param merge.
right: ecSize.width - coordRect.x - coordRect.width,
top: (ecSize.height - DEFAULT_FILLER_SIZE - DEFAULT_LOCATION_EDGE_GAP),
width: coordRect.width,
height: DEFAULT_FILLER_SIZE
}
: { // vertical
right: DEFAULT_LOCATION_EDGE_GAP,
top: coordRect.y,
width: DEFAULT_FILLER_SIZE,
height: coordRect.height
};
// Do not write back to option and replace value 'ph', because
// the 'ph' value should be recalculated when resize.
var layoutParams = layout.getLayoutParams(dataZoomModel.option);
// Replace the placeholder value.
zrUtil.each(['right', 'top', 'width', 'height'], function (name) {
if (layoutParams[name] === 'ph') {
layoutParams[name] = positionInfo[name];
}
});
var layoutRect = layout.getLayoutRect(
layoutParams,
ecSize,
dataZoomModel.padding
);
this._location = {x: layoutRect.x, y: layoutRect.y};
this._size = [layoutRect.width, layoutRect.height];
this._orient === VERTICAL && this._size.reverse();
},
/**
* @private
*/
_positionGroup: function () {
var thisGroup = this.group;
var location = this._location;
var orient = this._orient;
// Just use the first axis to determine mapping.
var targetAxisModel = this.dataZoomModel.getFirstTargetAxisModel();
var inverse = targetAxisModel && targetAxisModel.get('inverse');
var barGroup = this._displayables.barGroup;
var otherAxisInverse = (this._dataShadowInfo || {}).otherAxisInverse;
// Transform barGroup.
barGroup.attr(
(orient === HORIZONTAL && !inverse)
? {scale: otherAxisInverse ? [1, 1] : [1, -1]}
: (orient === HORIZONTAL && inverse)
? {scale: otherAxisInverse ? [-1, 1] : [-1, -1]}
: (orient === VERTICAL && !inverse)
? {scale: otherAxisInverse ? [1, -1] : [1, 1], rotation: Math.PI / 2}
// Dont use Math.PI, considering shadow direction.
: {scale: otherAxisInverse ? [-1, -1] : [-1, 1], rotation: Math.PI / 2}
);
// Position barGroup
var rect = thisGroup.getBoundingRect([barGroup]);
thisGroup.position[0] = location.x - rect.x;
thisGroup.position[1] = location.y - rect.y;
},
/**
* @private
*/
_getViewExtent: function () {
// View total length.
var halfHandleSize = this._halfHandleSize;
var totalLength = mathMax(this._size[0], halfHandleSize * 4);
var extent = [halfHandleSize, totalLength - halfHandleSize];
return extent;
},
_renderBackground : function () {
var dataZoomModel = this.dataZoomModel;
var size = this._size;
this._displayables.barGroup.add(new Rect({
silent: true,
shape: {
x: 0, y: 0, width: size[0], height: size[1]
},
style: {
fill: dataZoomModel.get('backgroundColor')
}
}));
},
_renderDataShadow: function () {
var info = this._dataShadowInfo = this._prepareDataShadowInfo();
if (!info) {
return;
}
var size = this._size;
var seriesModel = info.series;
var data = seriesModel.getRawData();
var otherDim = seriesModel.getShadowDim
? seriesModel.getShadowDim() // @see candlestick
: info.otherDim;
var otherDataExtent = data.getDataExtent(otherDim);
// Nice extent.
var otherOffset = (otherDataExtent[1] - otherDataExtent[0]) * 0.3;
otherDataExtent = [
otherDataExtent[0] - otherOffset,
otherDataExtent[1] + otherOffset
];
var otherShadowExtent = [0, size[1]];
var thisShadowExtent = [0, size[0]];
var points = [[size[0], 0], [0, 0]];
var step = thisShadowExtent[1] / (data.count() - 1);
var thisCoord = 0;
// Optimize for large data shadow
var stride = Math.round(data.count() / size[0]);
data.each([otherDim], function (value, index) {
if (stride > 0 && (index % stride)) {
thisCoord += step;
return;
}
// FIXME
// ??????????????list???????
var otherCoord = (value == null || isNaN(value) || value === '')
? null
: linearMap(value, otherDataExtent, otherShadowExtent, true);
otherCoord != null && points.push([thisCoord, otherCoord]);
thisCoord += step;
});
this._displayables.barGroup.add(new graphic.Polyline({
shape: {points: points},
style: {fill: this.dataZoomModel.get('dataBackgroundColor'), lineWidth: 0},
silent: true,
z2: -20
}));
},
_prepareDataShadowInfo: function () {
var dataZoomModel = this.dataZoomModel;
var showDataShadow = dataZoomModel.get('showDataShadow');
if (showDataShadow === false) {
return;
}
// Find a representative series.
var result;
var ecModel = this.ecModel;
dataZoomModel.eachTargetAxis(function (dimNames, axisIndex) {
var seriesModels = dataZoomModel
.getAxisProxy(dimNames.name, axisIndex)
.getTargetSeriesModels();
zrUtil.each(seriesModels, function (seriesModel) {
if (result) {
return;
}
if (showDataShadow !== true && zrUtil.indexOf(
SHOW_DATA_SHADOW_SERIES_TYPE, seriesModel.get('type')
) < 0
) {
return;
}
var otherDim = getOtherDim(dimNames.name);
var thisAxis = ecModel.getComponent(dimNames.axis, axisIndex).axis;
result = {
thisAxis: thisAxis,
series: seriesModel,
thisDim: dimNames.name,
otherDim: otherDim,
otherAxisInverse: seriesModel
.coordinateSystem.getOtherAxis(thisAxis).inverse
};
}, this);
}, this);
return result;
},
_renderHandle: function () {
var displaybles = this._displayables;
var handles = displaybles.handles = [];
var handleLabels = displaybles.handleLabels = [];
var barGroup = this._displayables.barGroup;
var size = this._size;
barGroup.add(displaybles.filler = new Rect({
draggable: true,
cursor: 'move',
drift: bind(this._onDragMove, this, 'all'),
ondragend: bind(this._onDragEnd, this),
onmouseover: bind(this._showDataInfo, this, true),
onmouseout: bind(this._showDataInfo, this, false),
style: {
fill: this.dataZoomModel.get('fillerColor'),
// text: ':::',
textPosition : 'inside'
}
}));
// Frame border.
barGroup.add(new Rect(graphic.subPixelOptimizeRect({
silent: true,
shape: {
x: 0,
y: 0,
width: size[0],
height: size[1]
},
style: {
stroke: this.dataZoomModel.get('dataBackgroundColor'),
lineWidth: DEFAULT_FRAME_BORDER_WIDTH,
fill: 'rgba(0,0,0,0)'
}
})));
each([0, 1], function (handleIndex) {
barGroup.add(handles[handleIndex] = new Rect({
style: {
fill: this.dataZoomModel.get('handleColor')
},
cursor: 'move',
draggable: true,
drift: bind(this._onDragMove, this, handleIndex),
ondragend: bind(this._onDragEnd, this),
onmouseover: bind(this._showDataInfo, this, true),
onmouseout: bind(this._showDataInfo, this, false)
}));
var textStyleModel = this.dataZoomModel.textStyleModel;
this.group.add(
handleLabels[handleIndex] = new graphic.Text({
silent: true,
invisible: true,
style: {
x: 0, y: 0, text: '',
textVerticalAlign: 'middle',
textAlign: 'center',
fill: textStyleModel.getTextColor(),
textFont: textStyleModel.getFont()
}
}));
}, this);
},
/**
* @private
*/
_resetInterval: function () {
var range = this._range = this.dataZoomModel.getPercentRange();
var viewExtent = this._getViewExtent();
this._handleEnds = [
linearMap(range[0], [0, 100], viewExtent, true),
linearMap(range[1], [0, 100], viewExtent, true)
];
},
/**
* @private
* @param {(number|string)} handleIndex 0 or 1 or 'all'
* @param {number} dx
* @param {number} dy
*/
_updateInterval: function (handleIndex, delta) {
var handleEnds = this._handleEnds;
var viewExtend = this._getViewExtent();
sliderMove(
delta,
handleEnds,
viewExtend,
(handleIndex === 'all' || this.dataZoomModel.get('zoomLock'))
? 'rigid' : 'cross',
handleIndex
);
this._range = asc([
linearMap(handleEnds[0], viewExtend, [0, 100], true),
linearMap(handleEnds[1], viewExtend, [0, 100], true)
]);
},
/**
* @private
*/
_updateView: function () {
var displaybles = this._displayables;
var handleEnds = this._handleEnds;
var handleInterval = asc(handleEnds.slice());
var size = this._size;
var halfHandleSize = this._halfHandleSize;
each([0, 1], function (handleIndex) {
// Handles
var handle = displaybles.handles[handleIndex];
handle.setShape({
x: handleEnds[handleIndex] - halfHandleSize,
y: -1,
width: halfHandleSize * 2,
height: size[1] + 2,
r: 1
});
}, this);
// Filler
displaybles.filler.setShape({
x: handleInterval[0],
y: 0,
width: handleInterval[1] - handleInterval[0],
height: this._size[1]
});
this._updateDataInfo();
},
/**
* @private
*/
_updateDataInfo: function () {
var dataZoomModel = this.dataZoomModel;
var displaybles = this._displayables;
var handleLabels = displaybles.handleLabels;
var orient = this._orient;
var labelTexts = ['', ''];
// FIXME
// date????formatter?autoformatter?ec2 date.getAutoFormatter?
if (dataZoomModel.get('showDetail')) {
var dataInterval;
var axis;
dataZoomModel.eachTargetAxis(function (dimNames, axisIndex) {
// Using dataInterval of the first axis.
if (!dataInterval) {
dataInterval = dataZoomModel
.getAxisProxy(dimNames.name, axisIndex)
.getDataValueWindow();
axis = this.ecModel.getComponent(dimNames.axis, axisIndex).axis;
}
}, this);
if (dataInterval) {
labelTexts = [
this._formatLabel(dataInterval[0], axis),
this._formatLabel(dataInterval[1], axis)
];
}
}
var orderedHandleEnds = asc(this._handleEnds.slice());
setLabel.call(this, 0);
setLabel.call(this, 1);
function setLabel(handleIndex) {
// Label
// Text should not transform by barGroup.
var barTransform = graphic.getTransform(
displaybles.handles[handleIndex], this.group
);
var direction = graphic.transformDirection(
handleIndex === 0 ? 'right' : 'left', barTransform
);
var offset = this._halfHandleSize + LABEL_GAP;
var textPoint = graphic.applyTransform(
[
orderedHandleEnds[handleIndex] + (handleIndex === 0 ? -offset : offset),
this._size[1] / 2
],
barTransform
);
handleLabels[handleIndex].setStyle({
x: textPoint[0],
y: textPoint[1],
textVerticalAlign: orient === HORIZONTAL ? 'middle' : direction,
textAlign: orient === HORIZONTAL ? direction : 'center',
text: labelTexts[handleIndex]
});
}
},
/**
* @private
*/
_formatLabel: function (value, axis) {
var dataZoomModel = this.dataZoomModel;
var labelFormatter = dataZoomModel.get('labelFormatter');
if (zrUtil.isFunction(labelFormatter)) {
return labelFormatter(value);
}
var labelPrecision = dataZoomModel.get('labelPrecision');
if (labelPrecision == null || labelPrecision === 'auto') {
labelPrecision = axis.getPixelPrecision();
}
value = (value == null && isNaN(value))
? ''
// FIXME Glue code
: (axis.type === 'category' || axis.type === 'time')
? axis.scale.getLabel(Math.round(value))
// param of toFixed should less then 20.
: value.toFixed(Math.min(labelPrecision, 20));
if (zrUtil.isString(labelFormatter)) {
value = labelFormatter.replace('{value}', value);
}
return value;
},
/**
* @private
* @param {boolean} showOrHide true: show, false: hide
*/
_showDataInfo: function (showOrHide) {
// Always show when drgging.
showOrHide = this._dragging || showOrHide;
var handleLabels = this._displayables.handleLabels;
handleLabels[0].attr('invisible', !showOrHide);
handleLabels[1].attr('invisible', !showOrHide);
},
_onDragMove: function (handleIndex, dx, dy) {
this._dragging = true;
// Transform dx, dy to bar coordination.
var vertex = this._applyBarTransform([dx, dy], true);
this._updateInterval(handleIndex, vertex[0]);
this._updateView();
if (this.dataZoomModel.get('realtime')) {
this._dispatchZoomAction();
}
},
_onDragEnd: function () {
this._dragging = false;
this._showDataInfo(false);
this._dispatchZoomAction();
},
/**
* This action will be throttled.
* @private
*/
_dispatchZoomAction: function () {
var range = this._range;
this.api.dispatchAction({
type: 'dataZoom',
from: this.uid,
dataZoomId: this.dataZoomModel.id,
start: range[0],
end: range[1]
});
},
/**
* @private
*/
_applyBarTransform: function (vertex, inverse) {
var barTransform = this._displayables.barGroup.getLocalTransform();
return graphic.applyTransform(vertex, barTransform, inverse);
},
/**
* @private
*/
_findCoordRect: function () {
// Find the grid coresponding to the first axis referred by dataZoom.
var targetInfo = this.getTargetInfo();
// FIXME
// ???catesian??polar
var rect;
if (targetInfo.cartesians.length) {
rect = targetInfo.cartesians[0].model.coordinateSystem.getRect();
}
else { // Polar
// FIXME
// ??????
var width = this.api.getWidth();
var height = this.api.getHeight();
rect = {
x: width * 0.2,
y: height * 0.2,
width: width * 0.6,
height: height * 0.6
};
}
return rect;
}
});
function getOtherDim(thisDim) {
// FIXME
// ?????getOtherAxis??????????????
return thisDim === 'x' ? 'y' : 'x';
}
return SliderZoomView;
});
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