devextreme/viz/tree_map/tooltip.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (viz/tree_map/tooltip.js)
 * Version: 18.1.3
 * Build date: Tue May 15 2018
 *
 * Copyright (c) 2012 - 2018 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
var proto = require("./tree_map.base").prototype,
    expand = require("../core/helpers").expand;
require("./api");
expand(proto, "_extendProxyType", function(proto) {
    var that = this;
    proto.showTooltip = function(coords) {
        that._showTooltip(this._id, coords)
    }
});
expand(proto, "_onNodesCreated", function() {
    if (this._tooltipIndex >= 0) {
        this._tooltip.hide()
    }
    this._tooltipIndex = -1
});
expand(proto, "_onTilingPerformed", function() {
    if (this._tooltipIndex >= 0) {
        this._moveTooltip(this._nodes[this._tooltipIndex])
    }
});

function getCoords(rect, renderer) {
    var offset = renderer.getRootOffset();
    return [(rect[0] + rect[2]) / 2 + offset.left, (rect[1] + rect[3]) / 2 + offset.top]
}
proto._showTooltip = function(index, coords) {
    var that = this,
        tooltip = that._tooltip,
        node = that._nodes[index],
        state = that._tooltipIndex === index || tooltip.show({
            value: node.value,
            valueText: tooltip.formatValue(node.value),
            node: node.proxy
        }, {
            x: 0,
            y: 0,
            offset: 0
        }, {
            node: node.proxy
        });
    if (state) {
        that._moveTooltip(node, coords)
    } else {
        tooltip.hide()
    }
    that._tooltipIndex = state ? index : -1
};
proto._moveTooltip = function(node, coords) {
    var xy = coords || node.rect && getCoords(node.rect, this._renderer) || [-1e3, -1e3];
    this._tooltip.move(xy[0], xy[1], 0)
};
proto.hideTooltip = function() {
    if (this._tooltipIndex >= 0) {
        this._tooltipIndex = -1;
        this._tooltip.hide()
    }
};
require("./tree_map.base").addPlugin(require("../core/tooltip").plugin);