echarts ContinuousView 源码
echarts ContinuousView 代码
文件路径：/src/component/visualMap/ContinuousView.ts
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
import * as zrUtil from 'zrender/src/core/util';
import LinearGradient, { LinearGradientObject } from 'zrender/src/graphic/LinearGradient';
import * as eventTool from 'zrender/src/core/event';
import VisualMapView from './VisualMapView';
import * as graphic from '../../util/graphic';
import * as numberUtil from '../../util/number';
import sliderMove from '../helper/sliderMove';
import * as helper from './helper';
import * as modelUtil from '../../util/model';
import VisualMapModel from './VisualMapModel';
import ContinuousModel from './ContinuousModel';
import GlobalModel from '../../model/Global';
import ExtensionAPI from '../../core/ExtensionAPI';
import Element, { ElementEvent } from 'zrender/src/Element';
import { TextVerticalAlign, TextAlign } from 'zrender/src/core/types';
import { ColorString, Payload } from '../../util/types';
import { parsePercent } from 'zrender/src/contain/text';
import { setAsHighDownDispatcher } from '../../util/states';
import { createSymbol } from '../../util/symbol';
import ZRImage from 'zrender/src/graphic/Image';
import { ECData, getECData } from '../../util/innerStore';
import { createTextStyle } from '../../label/labelStyle';
import { findEventDispatcher } from '../../util/event';
const linearMap = numberUtil.linearMap;
const each = zrUtil.each;
const mathMin = Math.min;
const mathMax = Math.max;
// Arbitrary value
const HOVER_LINK_SIZE = 12;
const HOVER_LINK_OUT = 6;
type Orient = VisualMapModel['option']['orient'];
type ShapeStorage = {
handleThumbs: graphic.Path[]
handleLabelPoints: number[][]
handleLabels: graphic.Text[]
inRange: graphic.Polygon
outOfRange: graphic.Polygon
mainGroup: graphic.Group
indicator: graphic.Path
indicatorLabel: graphic.Text
indicatorLabelPoint: number[]
};
type TargetDataIndices = ReturnType<ContinuousModel['findTargetDataIndices']>;
type BarVisual = {
barColor: LinearGradient,
barPoints: number[][]
handlesColor: ColorString[]
};
type Direction = 'left' | 'right' | 'top' | 'bottom';
// Notice:
// Any "interval" should be by the order of [low, high].
// "handle0" (handleIndex === 0) maps to
// low data value: this._dataInterval[0] and has low coord.
// "handle1" (handleIndex === 1) maps to
// high data value: this._dataInterval[1] and has high coord.
// The logic of transform is implemented in this._createBarGroup.
class ContinuousView extends VisualMapView {
static type = 'visualMap.continuous';
type = ContinuousView.type;
visualMapModel: ContinuousModel;
private _shapes = {} as ShapeStorage;
private _dataInterval: number[] = [];
private _handleEnds: number[] = [];
private _orient: Orient;
private _useHandle: boolean;
private _hoverLinkDataIndices: TargetDataIndices = [];
private _dragging: boolean;
private _hovering: boolean;
private _firstShowIndicator: boolean;
private _api: ExtensionAPI;
doRender(
visualMapModel: ContinuousModel,
ecModel: GlobalModel,
api: ExtensionAPI,
payload: {type: string, from: string}
) {
this._api = api;
if (!payload || payload.type !== 'selectDataRange' || payload.from !== this.uid) {
this._buildView();
}
}
private _buildView() {
this.group.removeAll();
const visualMapModel = this.visualMapModel;
const thisGroup = this.group;
this._orient = visualMapModel.get('orient');
this._useHandle = visualMapModel.get('calculable');
this._resetInterval();
this._renderBar(thisGroup);
const dataRangeText = visualMapModel.get('text');
this._renderEndsText(thisGroup, dataRangeText, 0);
this._renderEndsText(thisGroup, dataRangeText, 1);
// Do this for background size calculation.
this._updateView(true);
// After updating view, inner shapes is built completely,
// and then background can be rendered.
this.renderBackground(thisGroup);
// Real update view
this._updateView();
this._enableHoverLinkToSeries();
this._enableHoverLinkFromSeries();
this.positionGroup(thisGroup);
}
private _renderEndsText(group: graphic.Group, dataRangeText: string[], endsIndex?: 0 | 1) {
if (!dataRangeText) {
return;
}
// Compatible with ec2, text[0] map to high value, text[1] map low value.
let text = dataRangeText[1 - endsIndex];
text = text != null ? text + '' : '';
const visualMapModel = this.visualMapModel;
const textGap = visualMapModel.get('textGap');
const itemSize = visualMapModel.itemSize;
const barGroup = this._shapes.mainGroup;
const position = this._applyTransform(
[
itemSize[0] / 2,
endsIndex === 0 ? -textGap : itemSize[1] + textGap
],
barGroup
) as number[];
const align = this._applyTransform(
endsIndex === 0 ? 'bottom' : 'top',
barGroup
);
const orient = this._orient;
const textStyleModel = this.visualMapModel.textStyleModel;
this.group.add(new graphic.Text({
style: createTextStyle(textStyleModel, {
x: position[0],
y: position[1],
verticalAlign: orient === 'horizontal' ? 'middle' : align as TextVerticalAlign,
align: orient === 'horizontal' ? align as TextAlign : 'center',
text
})
}));
}
private _renderBar(targetGroup: graphic.Group) {
const visualMapModel = this.visualMapModel;
const shapes = this._shapes;
const itemSize = visualMapModel.itemSize;
const orient = this._orient;
const useHandle = this._useHandle;
const itemAlign = helper.getItemAlign(visualMapModel, this.api, itemSize);
const mainGroup = shapes.mainGroup = this._createBarGroup(itemAlign);
const gradientBarGroup = new graphic.Group();
mainGroup.add(gradientBarGroup);
// Bar
gradientBarGroup.add(shapes.outOfRange = createPolygon());
gradientBarGroup.add(shapes.inRange = createPolygon(
null,
useHandle ? getCursor(this._orient) : null,
zrUtil.bind(this._dragHandle, this, 'all', false),
zrUtil.bind(this._dragHandle, this, 'all', true)
));
// A border radius clip.
gradientBarGroup.setClipPath(new graphic.Rect({
shape: {
x: 0,
y: 0,
width: itemSize[0],
height: itemSize[1],
r: 3
}
}));
const textRect = visualMapModel.textStyleModel.getTextRect('国');
const textSize = mathMax(textRect.width, textRect.height);
// Handle
if (useHandle) {
shapes.handleThumbs = [];
shapes.handleLabels = [];
shapes.handleLabelPoints = [];
this._createHandle(visualMapModel, mainGroup, 0, itemSize, textSize, orient);
this._createHandle(visualMapModel, mainGroup, 1, itemSize, textSize, orient);
}
this._createIndicator(visualMapModel, mainGroup, itemSize, textSize, orient);
targetGroup.add(mainGroup);
}
private _createHandle(
visualMapModel: ContinuousModel,
mainGroup: graphic.Group,
handleIndex: 0 | 1,
itemSize: number[],
textSize: number,
orient: Orient
) {
const onDrift = zrUtil.bind(this._dragHandle, this, handleIndex, false);
const onDragEnd = zrUtil.bind(this._dragHandle, this, handleIndex, true);
const handleSize = parsePercent(visualMapModel.get('handleSize'), itemSize[0]);
const handleThumb = createSymbol(
visualMapModel.get('handleIcon'),
-handleSize / 2, -handleSize / 2, handleSize, handleSize,
null, true
);
const cursor = getCursor(this._orient);
handleThumb.attr({
cursor: cursor,
draggable: true,
drift: onDrift,
ondragend: onDragEnd,
onmousemove(e) {
eventTool.stop(e.event);
}
});
handleThumb.x = itemSize[0] / 2;
handleThumb.useStyle(visualMapModel.getModel('handleStyle').getItemStyle());
(handleThumb as graphic.Path).setStyle({
strokeNoScale: true,
strokeFirst: true
});
(handleThumb as graphic.Path).style.lineWidth *= 2;
handleThumb.ensureState('emphasis').style = visualMapModel.getModel(['emphasis', 'handleStyle']).getItemStyle();
setAsHighDownDispatcher(handleThumb, true);
mainGroup.add(handleThumb);
// Text is always horizontal layout but should not be effected by
// transform (orient/inverse). So label is built separately but not
// use zrender/graphic/helper/RectText, and is located based on view
// group (according to handleLabelPoint) but not barGroup.
const textStyleModel = this.visualMapModel.textStyleModel;
const handleLabel = new graphic.Text({
cursor: cursor,
draggable: true,
drift: onDrift,
onmousemove(e) {
// Fot mobile devicem, prevent screen slider on the button.
eventTool.stop(e.event);
},
ondragend: onDragEnd,
style: createTextStyle(textStyleModel, {
x: 0,
y: 0,
text: ''
})
});
handleLabel.ensureState('blur').style = {
opacity: 0.1
};
handleLabel.stateTransition = { duration: 200 };
this.group.add(handleLabel);
const handleLabelPoint = [handleSize, 0];
const shapes = this._shapes;
shapes.handleThumbs[handleIndex] = handleThumb;
shapes.handleLabelPoints[handleIndex] = handleLabelPoint;
shapes.handleLabels[handleIndex] = handleLabel;
}
private _createIndicator(
visualMapModel: ContinuousModel,
mainGroup: graphic.Group,
itemSize: number[],
textSize: number,
orient: Orient
) {
const scale = parsePercent(visualMapModel.get('indicatorSize'), itemSize[0]);
const indicator = createSymbol(
visualMapModel.get('indicatorIcon'),
-scale / 2, -scale / 2, scale, scale,
null, true
);
indicator.attr({
cursor: 'move',
invisible: true,
silent: true,
x: itemSize[0] / 2
});
const indicatorStyle = visualMapModel.getModel('indicatorStyle').getItemStyle();
if (indicator instanceof ZRImage) {
const pathStyle = indicator.style;
indicator.useStyle(zrUtil.extend({
// TODO other properties like x, y ?
image: pathStyle.image,
x: pathStyle.x, y: pathStyle.y,
width: pathStyle.width, height: pathStyle.height
}, indicatorStyle));
}
else {
indicator.useStyle(indicatorStyle);
}
mainGroup.add(indicator);
const textStyleModel = this.visualMapModel.textStyleModel;
const indicatorLabel = new graphic.Text({
silent: true,
invisible: true,
style: createTextStyle(textStyleModel, {
x: 0,
y: 0,
text: ''
})
});
this.group.add(indicatorLabel);
const indicatorLabelPoint = [
(orient === 'horizontal' ? textSize / 2 : HOVER_LINK_OUT) + itemSize[0] / 2,
0
];
const shapes = this._shapes;
shapes.indicator = indicator;
shapes.indicatorLabel = indicatorLabel;
shapes.indicatorLabelPoint = indicatorLabelPoint;
this._firstShowIndicator = true;
}
private _dragHandle(
handleIndex: 0 | 1 | 'all',
isEnd?: boolean,
// dx is event from ondragend if isEnd is true. It's not used
dx?: number | ElementEvent,
dy?: number
) {
if (!this._useHandle) {
return;
}
this._dragging = !isEnd;
if (!isEnd) {
// Transform dx, dy to bar coordination.
const vertex = this._applyTransform([dx as number, dy], this._shapes.mainGroup, true) as number[];
this._updateInterval(handleIndex, vertex[1]);
this._hideIndicator();
// Considering realtime, update view should be executed
// before dispatch action.
this._updateView();
}
// dragEnd do not dispatch action when realtime.
if (isEnd === !this.visualMapModel.get('realtime')) { // jshint ignore:line
this.api.dispatchAction({
type: 'selectDataRange',
from: this.uid,
visualMapId: this.visualMapModel.id,
selected: this._dataInterval.slice()
});
}
if (isEnd) {
!this._hovering && this._clearHoverLinkToSeries();
}
else if (useHoverLinkOnHandle(this.visualMapModel)) {
this._doHoverLinkToSeries(this._handleEnds[handleIndex as 0 | 1], false);
}
}
private _resetInterval() {
const visualMapModel = this.visualMapModel;
const dataInterval = this._dataInterval = visualMapModel.getSelected();
const dataExtent = visualMapModel.getExtent();
const sizeExtent = [0, visualMapModel.itemSize[1]];
this._handleEnds = [
linearMap(dataInterval[0], dataExtent, sizeExtent, true),
linearMap(dataInterval[1], dataExtent, sizeExtent, true)
];
}
/**
* @private
* @param {(number|string)} handleIndex 0 or 1 or 'all'
* @param {number} dx
* @param {number} dy
*/
private _updateInterval(handleIndex: 0 | 1 | 'all', delta: number) {
delta = delta || 0;
const visualMapModel = this.visualMapModel;
const handleEnds = this._handleEnds;
const sizeExtent = [0, visualMapModel.itemSize[1]];
sliderMove(
delta,
handleEnds,
sizeExtent,
handleIndex,
// cross is forbiden
0
);
const dataExtent = visualMapModel.getExtent();
// Update data interval.
this._dataInterval = [
linearMap(handleEnds[0], sizeExtent, dataExtent, true),
linearMap(handleEnds[1], sizeExtent, dataExtent, true)
];
}
private _updateView(forSketch?: boolean) {
const visualMapModel = this.visualMapModel;
const dataExtent = visualMapModel.getExtent();
const shapes = this._shapes;
const outOfRangeHandleEnds = [0, visualMapModel.itemSize[1]];
const inRangeHandleEnds = forSketch ? outOfRangeHandleEnds : this._handleEnds;
const visualInRange = this._createBarVisual(
this._dataInterval, dataExtent, inRangeHandleEnds, 'inRange'
);
const visualOutOfRange = this._createBarVisual(
dataExtent, dataExtent, outOfRangeHandleEnds, 'outOfRange'
);
shapes.inRange
.setStyle({
fill: visualInRange.barColor
// opacity: visualInRange.opacity
})
.setShape('points', visualInRange.barPoints);
shapes.outOfRange
.setStyle({
fill: visualOutOfRange.barColor
// opacity: visualOutOfRange.opacity
})
.setShape('points', visualOutOfRange.barPoints);
this._updateHandle(inRangeHandleEnds, visualInRange);
}
private _createBarVisual(
dataInterval: number[],
dataExtent: number[],
handleEnds: number[],
forceState: ContinuousModel['stateList'][number]
): BarVisual {
const opts = {
forceState: forceState,
convertOpacityToAlpha: true
};
const colorStops = this._makeColorGradient(dataInterval, opts);
const symbolSizes = [
this.getControllerVisual(dataInterval[0], 'symbolSize', opts) as number,
this.getControllerVisual(dataInterval[1], 'symbolSize', opts) as number
];
const barPoints = this._createBarPoints(handleEnds, symbolSizes);
return {
barColor: new LinearGradient(0, 0, 0, 1, colorStops),
barPoints: barPoints,
handlesColor: [
colorStops[0].color,
colorStops[colorStops.length - 1].color
]
};
}
private _makeColorGradient(
dataInterval: number[],
opts: {
forceState?: ContinuousModel['stateList'][number]
convertOpacityToAlpha?: boolean
}
) {
// Considering colorHue, which is not linear, so we have to sample
// to calculate gradient color stops, but not only caculate head
// and tail.
const sampleNumber = 100; // Arbitrary value.
const colorStops: LinearGradientObject['colorStops'] = [];
const step = (dataInterval[1] - dataInterval[0]) / sampleNumber;
colorStops.push({
color: this.getControllerVisual(dataInterval[0], 'color', opts) as ColorString,
offset: 0
});
for (let i = 1; i < sampleNumber; i++) {
const currValue = dataInterval[0] + step * i;
if (currValue > dataInterval[1]) {
break;
}
colorStops.push({
color: this.getControllerVisual(currValue, 'color', opts) as ColorString,
offset: i / sampleNumber
});
}
colorStops.push({
color: this.getControllerVisual(dataInterval[1], 'color', opts) as ColorString,
offset: 1
});
return colorStops;
}
private _createBarPoints(handleEnds: number[], symbolSizes: number[]) {
const itemSize = this.visualMapModel.itemSize;
return [
[itemSize[0] - symbolSizes[0], handleEnds[0]],
[itemSize[0], handleEnds[0]],
[itemSize[0], handleEnds[1]],
[itemSize[0] - symbolSizes[1], handleEnds[1]]
];
}
private _createBarGroup(itemAlign: helper.ItemAlign) {
const orient = this._orient;
const inverse = this.visualMapModel.get('inverse');
return new graphic.Group(
(orient === 'horizontal' && !inverse)
? {scaleX: itemAlign === 'bottom' ? 1 : -1, rotation: Math.PI / 2}
: (orient === 'horizontal' && inverse)
? {scaleX: itemAlign === 'bottom' ? -1 : 1, rotation: -Math.PI / 2}
: (orient === 'vertical' && !inverse)
? {scaleX: itemAlign === 'left' ? 1 : -1, scaleY: -1}
: {scaleX: itemAlign === 'left' ? 1 : -1}
);
}
private _updateHandle(handleEnds: number[], visualInRange: BarVisual) {
if (!this._useHandle) {
return;
}
const shapes = this._shapes;
const visualMapModel = this.visualMapModel;
const handleThumbs = shapes.handleThumbs;
const handleLabels = shapes.handleLabels;
const itemSize = visualMapModel.itemSize;
const dataExtent = visualMapModel.getExtent();
each([0, 1], function (handleIndex) {
const handleThumb = handleThumbs[handleIndex];
handleThumb.setStyle('fill', visualInRange.handlesColor[handleIndex]);
handleThumb.y = handleEnds[handleIndex];
const val = linearMap(handleEnds[handleIndex], [0, itemSize[1]], dataExtent, true);
const symbolSize = this.getControllerVisual(val, 'symbolSize') as number;
handleThumb.scaleX = handleThumb.scaleY = symbolSize / itemSize[0];
handleThumb.x = itemSize[0] - symbolSize / 2;
// Update handle label position.
const textPoint = graphic.applyTransform(
shapes.handleLabelPoints[handleIndex],
graphic.getTransform(handleThumb, this.group)
);
handleLabels[handleIndex].setStyle({
x: textPoint[0],
y: textPoint[1],
text: visualMapModel.formatValueText(this._dataInterval[handleIndex]),
verticalAlign: 'middle',
align: this._orient === 'vertical' ? this._applyTransform(
'left',
shapes.mainGroup
) as TextAlign : 'center'
});
}, this);
}
private _showIndicator(
cursorValue: number,
textValue: number,
rangeSymbol?: string,
halfHoverLinkSize?: number
) {
const visualMapModel = this.visualMapModel;
const dataExtent = visualMapModel.getExtent();
const itemSize = visualMapModel.itemSize;
const sizeExtent = [0, itemSize[1]];
const shapes = this._shapes;
const indicator = shapes.indicator;
if (!indicator) {
return;
}
indicator.attr('invisible', false);
const opts = {convertOpacityToAlpha: true};
const color = this.getControllerVisual(cursorValue, 'color', opts) as ColorString;
const symbolSize = this.getControllerVisual(cursorValue, 'symbolSize') as number;
const y = linearMap(cursorValue, dataExtent, sizeExtent, true);
const x = itemSize[0] - symbolSize / 2;
const oldIndicatorPos = { x: indicator.x, y: indicator.y };
// Update handle label position.
indicator.y = y;
indicator.x = x;
const textPoint = graphic.applyTransform(
shapes.indicatorLabelPoint,
graphic.getTransform(indicator, this.group)
);
const indicatorLabel = shapes.indicatorLabel;
indicatorLabel.attr('invisible', false);
const align = this._applyTransform('left', shapes.mainGroup);
const orient = this._orient;
const isHorizontal = orient === 'horizontal';
indicatorLabel.setStyle({
text: (rangeSymbol ? rangeSymbol : '') + visualMapModel.formatValueText(textValue),
verticalAlign: isHorizontal ? align as TextVerticalAlign : 'middle',
align: isHorizontal ? 'center' : align as TextAlign
});
const indicatorNewProps = {
x: x,
y: y,
style: {
fill: color
}
};
const labelNewProps = {
style: {
x: textPoint[0],
y: textPoint[1]
}
};
if (visualMapModel.ecModel.isAnimationEnabled() && !this._firstShowIndicator) {
const animationCfg = {
duration: 100,
easing: 'cubicInOut',
additive: true
} as const;
indicator.x = oldIndicatorPos.x;
indicator.y = oldIndicatorPos.y;
indicator.animateTo(indicatorNewProps, animationCfg);
indicatorLabel.animateTo(labelNewProps, animationCfg);
}
else {
indicator.attr(indicatorNewProps);
indicatorLabel.attr(labelNewProps);
}
this._firstShowIndicator = false;
const handleLabels = this._shapes.handleLabels;
if (handleLabels) {
for (let i = 0; i < handleLabels.length; i++) {
// Fade out handle labels.
// NOTE: Must use api enter/leave on emphasis/blur/select state. Or the global states manager will change it.
this._api.enterBlur(handleLabels[i]);
}
}
}
private _enableHoverLinkToSeries() {
const self = this;
this._shapes.mainGroup
.on('mousemove', function (e) {
self._hovering = true;
if (!self._dragging) {
const itemSize = self.visualMapModel.itemSize;
const pos = self._applyTransform(
[e.offsetX, e.offsetY], self._shapes.mainGroup, true, true
);
// For hover link show when hover handle, which might be
// below or upper than sizeExtent.
pos[1] = mathMin(mathMax(0, pos[1]), itemSize[1]);
self._doHoverLinkToSeries(
pos[1],
0 <= pos[0] && pos[0] <= itemSize[0]
);
}
})
.on('mouseout', function () {
// When mouse is out of handle, hoverLink still need
// to be displayed when realtime is set as false.
self._hovering = false;
!self._dragging && self._clearHoverLinkToSeries();
});
}
private _enableHoverLinkFromSeries() {
const zr = this.api.getZr();
if (this.visualMapModel.option.hoverLink) {
zr.on('mouseover', this._hoverLinkFromSeriesMouseOver, this);
zr.on('mouseout', this._hideIndicator, this);
}
else {
this._clearHoverLinkFromSeries();
}
}
private _doHoverLinkToSeries(cursorPos: number, hoverOnBar?: boolean) {
const visualMapModel = this.visualMapModel;
const itemSize = visualMapModel.itemSize;
if (!visualMapModel.option.hoverLink) {
return;
}
const sizeExtent = [0, itemSize[1]];
const dataExtent = visualMapModel.getExtent();
// For hover link show when hover handle, which might be below or upper than sizeExtent.
cursorPos = mathMin(mathMax(sizeExtent[0], cursorPos), sizeExtent[1]);
const halfHoverLinkSize = getHalfHoverLinkSize(visualMapModel, dataExtent, sizeExtent);
const hoverRange = [cursorPos - halfHoverLinkSize, cursorPos + halfHoverLinkSize];
const cursorValue = linearMap(cursorPos, sizeExtent, dataExtent, true);
const valueRange = [
linearMap(hoverRange[0], sizeExtent, dataExtent, true),
linearMap(hoverRange[1], sizeExtent, dataExtent, true)
];
// Consider data range is out of visualMap range, see test/visualMap-continuous.html,
// where china and india has very large population.
hoverRange[0] < sizeExtent[0] && (valueRange[0] = -Infinity);
hoverRange[1] > sizeExtent[1] && (valueRange[1] = Infinity);
// Do not show indicator when mouse is over handle,
// otherwise labels overlap, especially when dragging.
if (hoverOnBar) {
if (valueRange[0] === -Infinity) {
this._showIndicator(cursorValue, valueRange[1], '< ', halfHoverLinkSize);
}
else if (valueRange[1] === Infinity) {
this._showIndicator(cursorValue, valueRange[0], '> ', halfHoverLinkSize);
}
else {
this._showIndicator(cursorValue, cursorValue, '≈ ', halfHoverLinkSize);
}
}
// When realtime is set as false, handles, which are in barGroup,
// also trigger hoverLink, which help user to realize where they
// focus on when dragging. (see test/heatmap-large.html)
// When realtime is set as true, highlight will not show when hover
// handle, because the label on handle, which displays a exact value
// but not range, might mislead users.
const oldBatch = this._hoverLinkDataIndices;
let newBatch: TargetDataIndices = [];
if (hoverOnBar || useHoverLinkOnHandle(visualMapModel)) {
newBatch = this._hoverLinkDataIndices = visualMapModel.findTargetDataIndices(valueRange);
}
const resultBatches = modelUtil.compressBatches(oldBatch, newBatch);
this._dispatchHighDown('downplay', helper.makeHighDownBatch(resultBatches[0], visualMapModel));
this._dispatchHighDown('highlight', helper.makeHighDownBatch(resultBatches[1], visualMapModel));
}
private _hoverLinkFromSeriesMouseOver(e: ElementEvent) {
let ecData: ECData;
findEventDispatcher(e.target, target => {
const currECData = getECData(target);
if (currECData.dataIndex != null) {
ecData = currECData;
return true;
}
}, true);
if (!ecData) {
return;
}
const dataModel = this.ecModel.getSeriesByIndex(ecData.seriesIndex);
const visualMapModel = this.visualMapModel;
if (!visualMapModel.isTargetSeries(dataModel)) {
return;
}
const data = dataModel.getData(ecData.dataType);
const value = data.getStore().get(visualMapModel.getDataDimensionIndex(data), ecData.dataIndex) as number;
if (!isNaN(value)) {
this._showIndicator(value, value);
}
}
private _hideIndicator() {
const shapes = this._shapes;
shapes.indicator && shapes.indicator.attr('invisible', true);
shapes.indicatorLabel && shapes.indicatorLabel.attr('invisible', true);
const handleLabels = this._shapes.handleLabels;
if (handleLabels) {
for (let i = 0; i < handleLabels.length; i++) {
// Fade out handle labels.
// NOTE: Must use api enter/leave on emphasis/blur/select state. Or the global states manager will change it.
this._api.leaveBlur(handleLabels[i]);
}
}
}
private _clearHoverLinkToSeries() {
this._hideIndicator();
const indices = this._hoverLinkDataIndices;
this._dispatchHighDown('downplay', helper.makeHighDownBatch(indices, this.visualMapModel));
indices.length = 0;
}
private _clearHoverLinkFromSeries() {
this._hideIndicator();
const zr = this.api.getZr();
zr.off('mouseover', this._hoverLinkFromSeriesMouseOver);
zr.off('mouseout', this._hideIndicator);
}
private _applyTransform(vertex: number[], element: Element, inverse?: boolean, global?: boolean): number[]
private _applyTransform(vertex: Direction, element: Element, inverse?: boolean, global?: boolean): Direction
private _applyTransform(
vertex: number[] | Direction,
element: Element,
inverse?: boolean,
global?: boolean
) {
const transform = graphic.getTransform(element, global ? null : this.group);
return zrUtil.isArray(vertex)
? graphic.applyTransform(vertex, transform, inverse)
: graphic.transformDirection(vertex, transform, inverse);
}
// TODO: TYPE more specified payload types.
private _dispatchHighDown(type: 'highlight' | 'downplay', batch: Payload['batch']) {
batch && batch.length && this.api.dispatchAction({
type: type,
batch: batch
});
}
/**
* @override
*/
dispose() {
this._clearHoverLinkFromSeries();
this._clearHoverLinkToSeries();
}
/**
* @override
*/
remove() {
this._clearHoverLinkFromSeries();
this._clearHoverLinkToSeries();
}
}
function createPolygon(
points?: number[][],
cursor?: string,
onDrift?: (x: number, y: number) => void,
onDragEnd?: () => void
) {
return new graphic.Polygon({
shape: {points: points},
draggable: !!onDrift,
cursor: cursor,
drift: onDrift,
onmousemove(e) {
// Fot mobile devicem, prevent screen slider on the button.
eventTool.stop(e.event);
},
ondragend: onDragEnd
});
}
function getHalfHoverLinkSize(visualMapModel: ContinuousModel, dataExtent: number[], sizeExtent: number[]) {
let halfHoverLinkSize = HOVER_LINK_SIZE / 2;
const hoverLinkDataSize = visualMapModel.get('hoverLinkDataSize');
if (hoverLinkDataSize) {
halfHoverLinkSize = linearMap(hoverLinkDataSize, dataExtent, sizeExtent, true) / 2;
}
return halfHoverLinkSize;
}
function useHoverLinkOnHandle(visualMapModel: ContinuousModel) {
const hoverLinkOnHandle = visualMapModel.get('hoverLinkOnHandle');
return !!(hoverLinkOnHandle == null ? visualMapModel.get('realtime') : hoverLinkOnHandle);
}
function getCursor(orient: Orient) {
return orient === 'vertical' ? 'ns-resize' : 'ew-resize';
}
export default ContinuousView;
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