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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 echarts from '../../echarts';
import * as zrUtil from 'zrender/src/core/util';
import * as graphic from '../../util/graphic';
import DataDiffer from '../../data/DataDiffer';
import * as helper from '../helper/treeHelper';
import Breadcrumb from './Breadcrumb';
import RoamController from '../../component/helper/RoamController';
import BoundingRect from 'zrender/src/core/BoundingRect';
import * as matrix from 'zrender/src/core/matrix';
import * as animationUtil from '../../util/animation';
import makeStyleMapper from '../../model/mixin/makeStyleMapper';
import {windowOpen} from '../../util/format';
var bind = zrUtil.bind;
var Group = graphic.Group;
var Rect = graphic.Rect;
var each = zrUtil.each;
var DRAG_THRESHOLD = 3;
var PATH_LABEL_NOAMAL = ['label'];
var PATH_LABEL_EMPHASIS = ['emphasis', 'label'];
var PATH_UPPERLABEL_NORMAL = ['upperLabel'];
var PATH_UPPERLABEL_EMPHASIS = ['emphasis', 'upperLabel'];
var Z_BASE = 10; // Should bigger than every z.
var Z_BG = 1;
var Z_CONTENT = 2;
var getItemStyleEmphasis = makeStyleMapper([
['fill', 'color'],
// `borderColor` and `borderWidth` has been occupied,
// so use `stroke` to indicate the stroke of the rect.
['stroke', 'strokeColor'],
['lineWidth', 'strokeWidth'],
['shadowBlur'],
['shadowOffsetX'],
['shadowOffsetY'],
['shadowColor']
]);
var getItemStyleNormal = function (model) {
// Normal style props should include emphasis style props.
var itemStyle = getItemStyleEmphasis(model);
// Clear styles set by emphasis.
itemStyle.stroke = itemStyle.fill = itemStyle.lineWidth = null;
return itemStyle;
};
export default echarts.extendChartView({
type: 'treemap',
/**
* @override
*/
init: function (o, api) {
/**
* @private
* @type {module:zrender/container/Group}
*/
this._containerGroup;
/**
* @private
* @type {Object.<string, Array.<module:zrender/container/Group>>}
*/
this._storage = createStorage();
/**
* @private
* @type {module:echarts/data/Tree}
*/
this._oldTree;
/**
* @private
* @type {module:echarts/chart/treemap/Breadcrumb}
*/
this._breadcrumb;
/**
* @private
* @type {module:echarts/component/helper/RoamController}
*/
this._controller;
/**
* 'ready', 'animating'
* @private
*/
this._state = 'ready';
},
/**
* @override
*/
render: function (seriesModel, ecModel, api, payload) {
var models = ecModel.findComponents({
mainType: 'series', subType: 'treemap', query: payload
});
if (zrUtil.indexOf(models, seriesModel) < 0) {
return;
}
this.seriesModel = seriesModel;
this.api = api;
this.ecModel = ecModel;
var types = ['treemapZoomToNode', 'treemapRootToNode'];
var targetInfo = helper
.retrieveTargetInfo(payload, types, seriesModel);
var payloadType = payload && payload.type;
var layoutInfo = seriesModel.layoutInfo;
var isInit = !this._oldTree;
var thisStorage = this._storage;
// Mark new root when action is treemapRootToNode.
var reRoot = (payloadType === 'treemapRootToNode' && targetInfo && thisStorage)
? {
rootNodeGroup: thisStorage.nodeGroup[targetInfo.node.getRawIndex()],
direction: payload.direction
}
: null;
var containerGroup = this._giveContainerGroup(layoutInfo);
var renderResult = this._doRender(containerGroup, seriesModel, reRoot);
(
!isInit && (
!payloadType
|| payloadType === 'treemapZoomToNode'
|| payloadType === 'treemapRootToNode'
)
)
? this._doAnimation(containerGroup, renderResult, seriesModel, reRoot)
: renderResult.renderFinally();
this._resetController(api);
this._renderBreadcrumb(seriesModel, api, targetInfo);
},
/**
* @private
*/
_giveContainerGroup: function (layoutInfo) {
var containerGroup = this._containerGroup;
if (!containerGroup) {
// FIXME
// 加一层containerGroup是为了clip，但是现在clip功能并没有实现。
containerGroup = this._containerGroup = new Group();
this._initEvents(containerGroup);
this.group.add(containerGroup);
}
containerGroup.attr('position', [layoutInfo.x, layoutInfo.y]);
return containerGroup;
},
/**
* @private
*/
_doRender: function (containerGroup, seriesModel, reRoot) {
var thisTree = seriesModel.getData().tree;
var oldTree = this._oldTree;
// Clear last shape records.
var lastsForAnimation = createStorage();
var thisStorage = createStorage();
var oldStorage = this._storage;
var willInvisibleEls = [];
var doRenderNode = zrUtil.curry(
renderNode, seriesModel,
thisStorage, oldStorage, reRoot,
lastsForAnimation, willInvisibleEls
);
// Notice: when thisTree and oldTree are the same tree (see list.cloneShallow),
// the oldTree is actually losted, so we can not find all of the old graphic
// elements from tree. So we use this stragegy: make element storage, move
// from old storage to new storage, clear old storage.
dualTravel(
thisTree.root ? [thisTree.root] : [],
(oldTree && oldTree.root) ? [oldTree.root] : [],
containerGroup,
thisTree === oldTree || !oldTree,
0
);
// Process all removing.
var willDeleteEls = clearStorage(oldStorage);
this._oldTree = thisTree;
this._storage = thisStorage;
return {
lastsForAnimation: lastsForAnimation,
willDeleteEls: willDeleteEls,
renderFinally: renderFinally
};
function dualTravel(thisViewChildren, oldViewChildren, parentGroup, sameTree, depth) {
// When 'render' is triggered by action,
// 'this' and 'old' may be the same tree,
// we use rawIndex in that case.
if (sameTree) {
oldViewChildren = thisViewChildren;
each(thisViewChildren, function (child, index) {
!child.isRemoved() && processNode(index, index);
});
}
// Diff hierarchically (diff only in each subtree, but not whole).
// because, consistency of view is important.
else {
(new DataDiffer(oldViewChildren, thisViewChildren, getKey, getKey))
.add(processNode)
.update(processNode)
.remove(zrUtil.curry(processNode, null))
.execute();
}
function getKey(node) {
// Identify by name or raw index.
return node.getId();
}
function processNode(newIndex, oldIndex) {
var thisNode = newIndex != null ? thisViewChildren[newIndex] : null;
var oldNode = oldIndex != null ? oldViewChildren[oldIndex] : null;
var group = doRenderNode(thisNode, oldNode, parentGroup, depth);
group && dualTravel(
thisNode && thisNode.viewChildren || [],
oldNode && oldNode.viewChildren || [],
group,
sameTree,
depth + 1
);
}
}
function clearStorage(storage) {
var willDeleteEls = createStorage();
storage && each(storage, function (store, storageName) {
var delEls = willDeleteEls[storageName];
each(store, function (el) {
el && (delEls.push(el), el.__tmWillDelete = 1);
});
});
return willDeleteEls;
}
function renderFinally() {
each(willDeleteEls, function (els) {
each(els, function (el) {
el.parent && el.parent.remove(el);
});
});
each(willInvisibleEls, function (el) {
el.invisible = true;
// Setting invisible is for optimizing, so no need to set dirty,
// just mark as invisible.
el.dirty();
});
}
},
/**
* @private
*/
_doAnimation: function (containerGroup, renderResult, seriesModel, reRoot) {
if (!seriesModel.get('animation')) {
return;
}
var duration = seriesModel.get('animationDurationUpdate');
var easing = seriesModel.get('animationEasing');
var animationWrap = animationUtil.createWrap();
// Make delete animations.
each(renderResult.willDeleteEls, function (store, storageName) {
each(store, function (el, rawIndex) {
if (el.invisible) {
return;
}
var parent = el.parent; // Always has parent, and parent is nodeGroup.
var target;
if (reRoot && reRoot.direction === 'drillDown') {
target = parent === reRoot.rootNodeGroup
// This is the content element of view root.
// Only `content` will enter this branch, because
// `background` and `nodeGroup` will not be deleted.
? {
shape: {
x: 0,
y: 0,
width: parent.__tmNodeWidth,
height: parent.__tmNodeHeight
},
style: {
opacity: 0
}
}
// Others.
: {style: {opacity: 0}};
}
else {
var targetX = 0;
var targetY = 0;
if (!parent.__tmWillDelete) {
// Let node animate to right-bottom corner, cooperating with fadeout,
// which is appropriate for user understanding.
// Divided by 2 for reRoot rolling up effect.
targetX = parent.__tmNodeWidth / 2;
targetY = parent.__tmNodeHeight / 2;
}
target = storageName === 'nodeGroup'
? {position: [targetX, targetY], style: {opacity: 0}}
: {
shape: {x: targetX, y: targetY, width: 0, height: 0},
style: {opacity: 0}
};
}
target && animationWrap.add(el, target, duration, easing);
});
});
// Make other animations
each(this._storage, function (store, storageName) {
each(store, function (el, rawIndex) {
var last = renderResult.lastsForAnimation[storageName][rawIndex];
var target = {};
if (!last) {
return;
}
if (storageName === 'nodeGroup') {
if (last.old) {
target.position = el.position.slice();
el.attr('position', last.old);
}
}
else {
if (last.old) {
target.shape = zrUtil.extend({}, el.shape);
el.setShape(last.old);
}
if (last.fadein) {
el.setStyle('opacity', 0);
target.style = {opacity: 1};
}
// When animation is stopped for succedent animation starting,
// el.style.opacity might not be 1
else if (el.style.opacity !== 1) {
target.style = {opacity: 1};
}
}
animationWrap.add(el, target, duration, easing);
});
}, this);
this._state = 'animating';
animationWrap
.done(bind(function () {
this._state = 'ready';
renderResult.renderFinally();
}, this))
.start();
},
/**
* @private
*/
_resetController: function (api) {
var controller = this._controller;
// Init controller.
if (!controller) {
controller = this._controller = new RoamController(api.getZr());
controller.enable(this.seriesModel.get('roam'));
controller.on('pan', bind(this._onPan, this));
controller.on('zoom', bind(this._onZoom, this));
}
var rect = new BoundingRect(0, 0, api.getWidth(), api.getHeight());
controller.setPointerChecker(function (e, x, y) {
return rect.contain(x, y);
});
},
/**
* @private
*/
_clearController: function () {
var controller = this._controller;
if (controller) {
controller.dispose();
controller = null;
}
},
/**
* @private
*/
_onPan: function (e) {
if (this._state !== 'animating'
&& (Math.abs(e.dx) > DRAG_THRESHOLD || Math.abs(e.dy) > DRAG_THRESHOLD)
) {
// These param must not be cached.
var root = this.seriesModel.getData().tree.root;
if (!root) {
return;
}
var rootLayout = root.getLayout();
if (!rootLayout) {
return;
}
this.api.dispatchAction({
type: 'treemapMove',
from: this.uid,
seriesId: this.seriesModel.id,
rootRect: {
x: rootLayout.x + e.dx, y: rootLayout.y + e.dy,
width: rootLayout.width, height: rootLayout.height
}
});
}
},
/**
* @private
*/
_onZoom: function (e) {
var mouseX = e.originX;
var mouseY = e.originY;
if (this._state !== 'animating') {
// These param must not be cached.
var root = this.seriesModel.getData().tree.root;
if (!root) {
return;
}
var rootLayout = root.getLayout();
if (!rootLayout) {
return;
}
var rect = new BoundingRect(
rootLayout.x, rootLayout.y, rootLayout.width, rootLayout.height
);
var layoutInfo = this.seriesModel.layoutInfo;
// Transform mouse coord from global to containerGroup.
mouseX -= layoutInfo.x;
mouseY -= layoutInfo.y;
// Scale root bounding rect.
var m = matrix.create();
matrix.translate(m, m, [-mouseX, -mouseY]);
matrix.scale(m, m, [e.scale, e.scale]);
matrix.translate(m, m, [mouseX, mouseY]);
rect.applyTransform(m);
this.api.dispatchAction({
type: 'treemapRender',
from: this.uid,
seriesId: this.seriesModel.id,
rootRect: {
x: rect.x, y: rect.y,
width: rect.width, height: rect.height
}
});
}
},
/**
* @private
*/
_initEvents: function (containerGroup) {
containerGroup.on('click', function (e) {
if (this._state !== 'ready') {
return;
}
var nodeClick = this.seriesModel.get('nodeClick', true);
if (!nodeClick) {
return;
}
var targetInfo = this.findTarget(e.offsetX, e.offsetY);
if (!targetInfo) {
return;
}
var node = targetInfo.node;
if (node.getLayout().isLeafRoot) {
this._rootToNode(targetInfo);
}
else {
if (nodeClick === 'zoomToNode') {
this._zoomToNode(targetInfo);
}
else if (nodeClick === 'link') {
var itemModel = node.hostTree.data.getItemModel(node.dataIndex);
var link = itemModel.get('link', true);
var linkTarget = itemModel.get('target', true) || 'blank';
link && windowOpen(link, linkTarget);
}
}
}, this);
},
/**
* @private
*/
_renderBreadcrumb: function (seriesModel, api, targetInfo) {
if (!targetInfo) {
targetInfo = seriesModel.get('leafDepth', true) != null
? {node: seriesModel.getViewRoot()}
// FIXME
// better way?
// Find breadcrumb tail on center of containerGroup.
: this.findTarget(api.getWidth() / 2, api.getHeight() / 2);
if (!targetInfo) {
targetInfo = {node: seriesModel.getData().tree.root};
}
}
(this._breadcrumb || (this._breadcrumb = new Breadcrumb(this.group)))
.render(seriesModel, api, targetInfo.node, bind(onSelect, this));
function onSelect(node) {
if (this._state !== 'animating') {
helper.aboveViewRoot(seriesModel.getViewRoot(), node)
? this._rootToNode({node: node})
: this._zoomToNode({node: node});
}
}
},
/**
* @override
*/
remove: function () {
this._clearController();
this._containerGroup && this._containerGroup.removeAll();
this._storage = createStorage();
this._state = 'ready';
this._breadcrumb && this._breadcrumb.remove();
},
dispose: function () {
this._clearController();
},
/**
* @private
*/
_zoomToNode: function (targetInfo) {
this.api.dispatchAction({
type: 'treemapZoomToNode',
from: this.uid,
seriesId: this.seriesModel.id,
targetNode: targetInfo.node
});
},
/**
* @private
*/
_rootToNode: function (targetInfo) {
this.api.dispatchAction({
type: 'treemapRootToNode',
from: this.uid,
seriesId: this.seriesModel.id,
targetNode: targetInfo.node
});
},
/**
* @public
* @param {number} x Global coord x.
* @param {number} y Global coord y.
* @return {Object} info If not found, return undefined;
* @return {number} info.node Target node.
* @return {number} info.offsetX x refer to target node.
* @return {number} info.offsetY y refer to target node.
*/
findTarget: function (x, y) {
var targetInfo;
var viewRoot = this.seriesModel.getViewRoot();
viewRoot.eachNode({attr: 'viewChildren', order: 'preorder'}, function (node) {
var bgEl = this._storage.background[node.getRawIndex()];
// If invisible, there might be no element.
if (bgEl) {
var point = bgEl.transformCoordToLocal(x, y);
var shape = bgEl.shape;
// For performance consideration, dont use 'getBoundingRect'.
if (shape.x <= point[0]
&& point[0] <= shape.x + shape.width
&& shape.y <= point[1]
&& point[1] <= shape.y + shape.height
) {
targetInfo = {node: node, offsetX: point[0], offsetY: point[1]};
}
else {
return false; // Suppress visit subtree.
}
}
}, this);
return targetInfo;
}
});
/**
* @inner
*/
function createStorage() {
return {nodeGroup: [], background: [], content: []};
}
/**
* @inner
* @return Return undefined means do not travel further.
*/
function renderNode(
seriesModel, thisStorage, oldStorage, reRoot,
lastsForAnimation, willInvisibleEls,
thisNode, oldNode, parentGroup, depth
) {
// Whether under viewRoot.
if (!thisNode) {
// Deleting nodes will be performed finally. This method just find
// element from old storage, or create new element, set them to new
// storage, and set styles.
return;
}
// -------------------------------------------------------------------
// Start of closure variables available in "Procedures in renderNode".
var thisLayout = thisNode.getLayout();
var data = seriesModel.getData();
// Only for enabling highlight/downplay. Clear firstly.
// Because some node will not be rendered.
data.setItemGraphicEl(thisNode.dataIndex, null);
if (!thisLayout || !thisLayout.isInView) {
return;
}
var thisWidth = thisLayout.width;
var thisHeight = thisLayout.height;
var borderWidth = thisLayout.borderWidth;
var thisInvisible = thisLayout.invisible;
var thisRawIndex = thisNode.getRawIndex();
var oldRawIndex = oldNode && oldNode.getRawIndex();
var thisViewChildren = thisNode.viewChildren;
var upperHeight = thisLayout.upperHeight;
var isParent = thisViewChildren && thisViewChildren.length;
var itemStyleNormalModel = thisNode.getModel('itemStyle');
var itemStyleEmphasisModel = thisNode.getModel('emphasis.itemStyle');
// End of closure ariables available in "Procedures in renderNode".
// -----------------------------------------------------------------
// Node group
var group = giveGraphic('nodeGroup', Group);
if (!group) {
return;
}
parentGroup.add(group);
// x,y are not set when el is above view root.
group.attr('position', [thisLayout.x || 0, thisLayout.y || 0]);
group.__tmNodeWidth = thisWidth;
group.__tmNodeHeight = thisHeight;
if (thisLayout.isAboveViewRoot) {
return group;
}
var nodeModel = thisNode.getModel();
// Background
var bg = giveGraphic('background', Rect, depth, Z_BG);
bg && renderBackground(group, bg, isParent && thisLayout.upperLabelHeight);
// No children, render content.
if (isParent) {
// Because of the implementation about "traverse" in graphic hover style, we
// can not set hover listener on the "group" of non-leaf node. Otherwise the
// hover event from the descendents will be listenered.
if (graphic.isHighDownDispatcher(group)) {
graphic.setAsHighDownDispatcher(group, false);
}
if (bg) {
graphic.setAsHighDownDispatcher(bg, true);
// Only for enabling highlight/downplay.
data.setItemGraphicEl(thisNode.dataIndex, bg);
}
}
else {
var content = giveGraphic('content', Rect, depth, Z_CONTENT);
content && renderContent(group, content);
if (bg && graphic.isHighDownDispatcher(bg)) {
graphic.setAsHighDownDispatcher(bg, false);
}
graphic.setAsHighDownDispatcher(group, true);
// Only for enabling highlight/downplay.
data.setItemGraphicEl(thisNode.dataIndex, group);
}
return group;
// ----------------------------
// | Procedures in renderNode |
// ----------------------------
function renderBackground(group, bg, useUpperLabel) {
// For tooltip.
bg.dataIndex = thisNode.dataIndex;
bg.seriesIndex = seriesModel.seriesIndex;
bg.setShape({x: 0, y: 0, width: thisWidth, height: thisHeight});
if (thisInvisible) {
// If invisible, do not set visual, otherwise the element will
// change immediately before animation. We think it is OK to
// remain its origin color when moving out of the view window.
processInvisible(bg);
}
else {
bg.invisible = false;
var visualBorderColor = thisNode.getVisual('borderColor', true);
var emphasisBorderColor = itemStyleEmphasisModel.get('borderColor');
var normalStyle = getItemStyleNormal(itemStyleNormalModel);
normalStyle.fill = visualBorderColor;
var emphasisStyle = getItemStyleEmphasis(itemStyleEmphasisModel);
emphasisStyle.fill = emphasisBorderColor;
if (useUpperLabel) {
var upperLabelWidth = thisWidth - 2 * borderWidth;
prepareText(
normalStyle, emphasisStyle, visualBorderColor, upperLabelWidth, upperHeight,
{x: borderWidth, y: 0, width: upperLabelWidth, height: upperHeight}
);
}
// For old bg.
else {
normalStyle.text = emphasisStyle.text = null;
}
bg.setStyle(normalStyle);
graphic.setElementHoverStyle(bg, emphasisStyle);
}
group.add(bg);
}
function renderContent(group, content) {
// For tooltip.
content.dataIndex = thisNode.dataIndex;
content.seriesIndex = seriesModel.seriesIndex;
var contentWidth = Math.max(thisWidth - 2 * borderWidth, 0);
var contentHeight = Math.max(thisHeight - 2 * borderWidth, 0);
content.culling = true;
content.setShape({
x: borderWidth,
y: borderWidth,
width: contentWidth,
height: contentHeight
});
if (thisInvisible) {
// If invisible, do not set visual, otherwise the element will
// change immediately before animation. We think it is OK to
// remain its origin color when moving out of the view window.
processInvisible(content);
}
else {
content.invisible = false;
var visualColor = thisNode.getVisual('color', true);
var normalStyle = getItemStyleNormal(itemStyleNormalModel);
normalStyle.fill = visualColor;
var emphasisStyle = getItemStyleEmphasis(itemStyleEmphasisModel);
prepareText(normalStyle, emphasisStyle, visualColor, contentWidth, contentHeight);
content.setStyle(normalStyle);
graphic.setElementHoverStyle(content, emphasisStyle);
}
group.add(content);
}
function processInvisible(element) {
// Delay invisible setting utill animation finished,
// avoid element vanish suddenly before animation.
!element.invisible && willInvisibleEls.push(element);
}
function prepareText(normalStyle, emphasisStyle, visualColor, width, height, upperLabelRect) {
var defaultText = nodeModel.get('name');
var normalLabelModel = nodeModel.getModel(
upperLabelRect ? PATH_UPPERLABEL_NORMAL : PATH_LABEL_NOAMAL
);
var emphasisLabelModel = nodeModel.getModel(
upperLabelRect ? PATH_UPPERLABEL_EMPHASIS : PATH_LABEL_EMPHASIS
);
var isShow = normalLabelModel.getShallow('show');
graphic.setLabelStyle(
normalStyle, emphasisStyle, normalLabelModel, emphasisLabelModel,
{
defaultText: isShow ? defaultText : null,
autoColor: visualColor,
isRectText: true,
labelFetcher: seriesModel,
labelDataIndex: thisNode.dataIndex,
labelProp: upperLabelRect ? 'upperLabel' : 'label'
}
);
addDrillDownIcon(normalStyle, upperLabelRect, thisLayout);
addDrillDownIcon(emphasisStyle, upperLabelRect, thisLayout);
upperLabelRect && (normalStyle.textRect = zrUtil.clone(upperLabelRect));
normalStyle.truncate = (isShow && normalLabelModel.get('ellipsis'))
? {
outerWidth: width,
outerHeight: height,
minChar: 2
}
: null;
}
function addDrillDownIcon(style, upperLabelRect, thisLayout) {
var text = style.text;
if (!upperLabelRect && thisLayout.isLeafRoot && text != null) {
var iconChar = seriesModel.get('drillDownIcon', true);
style.text = iconChar ? iconChar + ' ' + text : text;
}
}
function giveGraphic(storageName, Ctor, depth, z) {
var element = oldRawIndex != null && oldStorage[storageName][oldRawIndex];
var lasts = lastsForAnimation[storageName];
if (element) {
// Remove from oldStorage
oldStorage[storageName][oldRawIndex] = null;
prepareAnimationWhenHasOld(lasts, element, storageName);
}
// If invisible and no old element, do not create new element (for optimizing).
else if (!thisInvisible) {
element = new Ctor({z: calculateZ(depth, z)});
element.__tmDepth = depth;
element.__tmStorageName = storageName;
prepareAnimationWhenNoOld(lasts, element, storageName);
}
// Set to thisStorage
return (thisStorage[storageName][thisRawIndex] = element);
}
function prepareAnimationWhenHasOld(lasts, element, storageName) {
var lastCfg = lasts[thisRawIndex] = {};
lastCfg.old = storageName === 'nodeGroup'
? element.position.slice()
: zrUtil.extend({}, element.shape);
}
// If a element is new, we need to find the animation start point carefully,
// otherwise it will looks strange when 'zoomToNode'.
function prepareAnimationWhenNoOld(lasts, element, storageName) {
var lastCfg = lasts[thisRawIndex] = {};
var parentNode = thisNode.parentNode;
if (parentNode && (!reRoot || reRoot.direction === 'drillDown')) {
var parentOldX = 0;
var parentOldY = 0;
// New nodes appear from right-bottom corner in 'zoomToNode' animation.
// For convenience, get old bounding rect from background.
var parentOldBg = lastsForAnimation.background[parentNode.getRawIndex()];
if (!reRoot && parentOldBg && parentOldBg.old) {
parentOldX = parentOldBg.old.width;
parentOldY = parentOldBg.old.height;
}
// When no parent old shape found, its parent is new too,
// so we can just use {x:0, y:0}.
lastCfg.old = storageName === 'nodeGroup'
? [0, parentOldY]
: {x: parentOldX, y: parentOldY, width: 0, height: 0};
}
// Fade in, user can be aware that these nodes are new.
lastCfg.fadein = storageName !== 'nodeGroup';
}
}
// We can not set all backgroud with the same z, Because the behaviour of
// drill down and roll up differ background creation sequence from tree
// hierarchy sequence, which cause that lowser background element overlap
// upper ones. So we calculate z based on depth.
// Moreover, we try to shrink down z interval to [0, 1] to avoid that
// treemap with large z overlaps other components.
function calculateZ(depth, zInLevel) {
var zb = depth * Z_BASE + zInLevel;
return (zb - 1) / zb;
}