graphic.js 43.4 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
/*
* 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 * as pathTool from 'zrender/src/tool/path';
import * as colorTool from 'zrender/src/tool/color';
import * as matrix from 'zrender/src/core/matrix';
import * as vector from 'zrender/src/core/vector';
import Path from 'zrender/src/graphic/Path';
import Transformable from 'zrender/src/mixin/Transformable';
import ZImage from 'zrender/src/graphic/Image';
import Group from 'zrender/src/container/Group';
import Text from 'zrender/src/graphic/Text';
import Circle from 'zrender/src/graphic/shape/Circle';
import Sector from 'zrender/src/graphic/shape/Sector';
import Ring from 'zrender/src/graphic/shape/Ring';
import Polygon from 'zrender/src/graphic/shape/Polygon';
import Polyline from 'zrender/src/graphic/shape/Polyline';
import Rect from 'zrender/src/graphic/shape/Rect';
import Line from 'zrender/src/graphic/shape/Line';
import BezierCurve from 'zrender/src/graphic/shape/BezierCurve';
import Arc from 'zrender/src/graphic/shape/Arc';
import CompoundPath from 'zrender/src/graphic/CompoundPath';
import LinearGradient from 'zrender/src/graphic/LinearGradient';
import RadialGradient from 'zrender/src/graphic/RadialGradient';
import BoundingRect from 'zrender/src/core/BoundingRect';
import IncrementalDisplayable from 'zrender/src/graphic/IncrementalDisplayable';


var round = Math.round;
var mathMax = Math.max;
var mathMin = Math.min;

var EMPTY_OBJ = {};

export var Z2_EMPHASIS_LIFT = 1;

/**
 * Extend shape with parameters
 */
export function extendShape(opts) {
    return Path.extend(opts);
}

/**
 * Extend path
 */
export function extendPath(pathData, opts) {
    return pathTool.extendFromString(pathData, opts);
}

/**
 * Create a path element from path data string
 * @param {string} pathData
 * @param {Object} opts
 * @param {module:zrender/core/BoundingRect} rect
 * @param {string} [layout=cover] 'center' or 'cover'
 */
export function makePath(pathData, opts, rect, layout) {
    var path = pathTool.createFromString(pathData, opts);
    if (rect) {
        if (layout === 'center') {
            rect = centerGraphic(rect, path.getBoundingRect());
        }
        resizePath(path, rect);
    }
    return path;
}

/**
 * Create a image element from image url
 * @param {string} imageUrl image url
 * @param {Object} opts options
 * @param {module:zrender/core/BoundingRect} rect constrain rect
 * @param {string} [layout=cover] 'center' or 'cover'
 */
export function makeImage(imageUrl, rect, layout) {
    var path = new ZImage({
        style: {
            image: imageUrl,
            x: rect.x,
            y: rect.y,
            width: rect.width,
            height: rect.height
        },
        onload: function (img) {
            if (layout === 'center') {
                var boundingRect = {
                    width: img.width,
                    height: img.height
                };
                path.setStyle(centerGraphic(rect, boundingRect));
            }
        }
    });
    return path;
}

/**
 * Get position of centered element in bounding box.
 *
 * @param  {Object} rect         element local bounding box
 * @param  {Object} boundingRect constraint bounding box
 * @return {Object} element position containing x, y, width, and height
 */
function centerGraphic(rect, boundingRect) {
    // Set rect to center, keep width / height ratio.
    var aspect = boundingRect.width / boundingRect.height;
    var width = rect.height * aspect;
    var height;
    if (width <= rect.width) {
        height = rect.height;
    }
    else {
        width = rect.width;
        height = width / aspect;
    }
    var cx = rect.x + rect.width / 2;
    var cy = rect.y + rect.height / 2;

    return {
        x: cx - width / 2,
        y: cy - height / 2,
        width: width,
        height: height
    };
}

export var mergePath = pathTool.mergePath;

/**
 * Resize a path to fit the rect
 * @param {module:zrender/graphic/Path} path
 * @param {Object} rect
 */
export function resizePath(path, rect) {
    if (!path.applyTransform) {
        return;
    }

    var pathRect = path.getBoundingRect();

    var m = pathRect.calculateTransform(rect);

    path.applyTransform(m);
}

/**
 * Sub pixel optimize line for canvas
 *
 * @param {Object} param
 * @param {Object} [param.shape]
 * @param {number} [param.shape.x1]
 * @param {number} [param.shape.y1]
 * @param {number} [param.shape.x2]
 * @param {number} [param.shape.y2]
 * @param {Object} [param.style]
 * @param {number} [param.style.lineWidth]
 * @return {Object} Modified param
 */
export function subPixelOptimizeLine(param) {
    var shape = param.shape;
    var lineWidth = param.style.lineWidth;

    if (round(shape.x1 * 2) === round(shape.x2 * 2)) {
        shape.x1 = shape.x2 = subPixelOptimize(shape.x1, lineWidth, true);
    }
    if (round(shape.y1 * 2) === round(shape.y2 * 2)) {
        shape.y1 = shape.y2 = subPixelOptimize(shape.y1, lineWidth, true);
    }
    return param;
}

/**
 * Sub pixel optimize rect for canvas
 *
 * @param {Object} param
 * @param {Object} [param.shape]
 * @param {number} [param.shape.x]
 * @param {number} [param.shape.y]
 * @param {number} [param.shape.width]
 * @param {number} [param.shape.height]
 * @param {Object} [param.style]
 * @param {number} [param.style.lineWidth]
 * @return {Object} Modified param
 */
export function subPixelOptimizeRect(param) {
    var shape = param.shape;
    var lineWidth = param.style.lineWidth;
    var originX = shape.x;
    var originY = shape.y;
    var originWidth = shape.width;
    var originHeight = shape.height;
    shape.x = subPixelOptimize(shape.x, lineWidth, true);
    shape.y = subPixelOptimize(shape.y, lineWidth, true);
    shape.width = Math.max(
        subPixelOptimize(originX + originWidth, lineWidth, false) - shape.x,
        originWidth === 0 ? 0 : 1
    );
    shape.height = Math.max(
        subPixelOptimize(originY + originHeight, lineWidth, false) - shape.y,
        originHeight === 0 ? 0 : 1
    );
    return param;
}

/**
 * Sub pixel optimize for canvas
 *
 * @param {number} position Coordinate, such as x, y
 * @param {number} lineWidth Should be nonnegative integer.
 * @param {boolean=} positiveOrNegative Default false (negative).
 * @return {number} Optimized position.
 */
export function subPixelOptimize(position, lineWidth, positiveOrNegative) {
    // Assure that (position + lineWidth / 2) is near integer edge,
    // otherwise line will be fuzzy in canvas.
    var doubledPosition = round(position * 2);
    return (doubledPosition + round(lineWidth)) % 2 === 0
        ? doubledPosition / 2
        : (doubledPosition + (positiveOrNegative ? 1 : -1)) / 2;
}

function hasFillOrStroke(fillOrStroke) {
    return fillOrStroke != null && fillOrStroke !== 'none';
}

// Most lifted color are duplicated.
var liftedColorMap = zrUtil.createHashMap();
var liftedColorCount = 0;

function liftColor(color) {
    if (typeof color !== 'string') {
        return color;
    }
    var liftedColor = liftedColorMap.get(color);
    if (!liftedColor) {
        liftedColor = colorTool.lift(color, -0.1);
        if (liftedColorCount < 10000) {
            liftedColorMap.set(color, liftedColor);
            liftedColorCount++;
        }
    }
    return liftedColor;
}

function cacheElementStl(el) {
    if (!el.__hoverStlDirty) {
        return;
    }
    el.__hoverStlDirty = false;

    var hoverStyle = el.__hoverStl;
    if (!hoverStyle) {
        el.__cachedNormalStl = el.__cachedNormalZ2 = null;
        return;
    }

    var normalStyle = el.__cachedNormalStl = {};
    el.__cachedNormalZ2 = el.z2;
    var elStyle = el.style;

    for (var name in hoverStyle) {
        // See comment in `doSingleEnterHover`.
        if (hoverStyle[name] != null) {
            normalStyle[name] = elStyle[name];
        }
    }

    // Always cache fill and stroke to normalStyle for lifting color.
    normalStyle.fill = elStyle.fill;
    normalStyle.stroke = elStyle.stroke;
}

function doSingleEnterHover(el) {
    var hoverStl = el.__hoverStl;

    if (!hoverStl || el.__highlighted) {
        return;
    }

    var useHoverLayer = el.useHoverLayer;
    el.__highlighted = useHoverLayer ? 'layer' : 'plain';

    var zr = el.__zr;
    if (!zr && useHoverLayer) {
        return;
    }

    var elTarget = el;
    var targetStyle = el.style;

    if (useHoverLayer) {
        elTarget = zr.addHover(el);
        targetStyle = elTarget.style;
    }

    rollbackDefaultTextStyle(targetStyle);

    if (!useHoverLayer) {
        cacheElementStl(elTarget);
    }

    // styles can be:
    // {
    //    label: {
    //        show: false,
    //        position: 'outside',
    //        fontSize: 18
    //    },
    //    emphasis: {
    //        label: {
    //            show: true
    //        }
    //    }
    // },
    // where properties of `emphasis` may not appear in `normal`. We previously use
    // module:echarts/util/model#defaultEmphasis to merge `normal` to `emphasis`.
    // But consider rich text and setOption in merge mode, it is impossible to cover
    // all properties in merge. So we use merge mode when setting style here, where
    // only properties that is not `null/undefined` can be set. The disadventage:
    // null/undefined can not be used to remove style any more in `emphasis`.
    targetStyle.extendFrom(hoverStl);

    setDefaultHoverFillStroke(targetStyle, hoverStl, 'fill');
    setDefaultHoverFillStroke(targetStyle, hoverStl, 'stroke');

    applyDefaultTextStyle(targetStyle);

    if (!useHoverLayer) {
        el.dirty(false);
        el.z2 += Z2_EMPHASIS_LIFT;
    }
}

function setDefaultHoverFillStroke(targetStyle, hoverStyle, prop) {
    if (!hasFillOrStroke(hoverStyle[prop]) && hasFillOrStroke(targetStyle[prop])) {
        targetStyle[prop] = liftColor(targetStyle[prop]);
    }
}

function doSingleLeaveHover(el) {
    var highlighted = el.__highlighted;

    if (!highlighted) {
        return;
    }

    el.__highlighted = false;

    if (highlighted === 'layer') {
        el.__zr && el.__zr.removeHover(el);
    }
    else if (highlighted) {
        var style = el.style;

        var normalStl = el.__cachedNormalStl;
        if (normalStl) {
            rollbackDefaultTextStyle(style);
            // Consider null/undefined value, should use
            // `setStyle` but not `extendFrom(stl, true)`.
            el.setStyle(normalStl);
            applyDefaultTextStyle(style);
        }
        // `__cachedNormalZ2` will not be reset if calling `setElementHoverStyle`
        // when `el` is on emphasis state. So here by comparing with 1, we try
        // hard to make the bug case rare.
        var normalZ2 = el.__cachedNormalZ2;
        if (normalZ2 != null && el.z2 - normalZ2 === Z2_EMPHASIS_LIFT) {
            el.z2 = normalZ2;
        }
    }
}

function traverseCall(el, method) {
    el.isGroup
        ? el.traverse(function (child) {
            !child.isGroup && method(child);
        })
        : method(el);
}

/**
 * Set hover style (namely "emphasis style") of element, based on the current
 * style of the given `el`.
 * This method should be called after all of the normal styles have been adopted
 * to the `el`. See the reason on `setHoverStyle`.
 *
 * @param {module:zrender/Element} el Should not be `zrender/container/Group`.
 * @param {Object|boolean} [hoverStl] The specified hover style.
 *        If set as `false`, disable the hover style.
 *        Similarly, The `el.hoverStyle` can alse be set
 *        as `false` to disable the hover style.
 *        Otherwise, use the default hover style if not provided.
 * @param {Object} [opt]
 * @param {boolean} [opt.hoverSilentOnTouch=false] See `graphic.setAsHoverStyleTrigger`
 */
export function setElementHoverStyle(el, hoverStl) {
    // For performance consideration, it might be better to make the "hover style" only the
    // difference properties from the "normal style", but not a entire copy of all styles.
    hoverStl = el.__hoverStl = hoverStl !== false && (hoverStl || {});
    el.__hoverStlDirty = true;

    // FIXME
    // It is not completely right to save "normal"/"emphasis" flag on elements.
    // It probably should be saved on `data` of series. Consider the cases:
    // (1) A highlighted elements are moved out of the view port and re-enter
    // again by dataZoom.
    // (2) call `setOption` and replace elements totally when they are highlighted.
    if (el.__highlighted) {
        // Consider the case:
        // The styles of a highlighted `el` is being updated. The new "emphasis style"
        // should be adapted to the `el`. Notice here new "normal styles" should have
        // been set outside and the cached "normal style" is out of date.
        el.__cachedNormalStl = null;
        // Do not clear `__cachedNormalZ2` here, because setting `z2` is not a constraint
        // of this method. In most cases, `z2` is not set and hover style should be able
        // to rollback. Of course, that would bring bug, but only in a rare case, see
        // `doSingleLeaveHover` for details.
        doSingleLeaveHover(el);

        doSingleEnterHover(el);
    }
}

/**
 * Emphasis (called by API) has higher priority than `mouseover`.
 * When element has been called to be entered emphasis, mouse over
 * should not trigger the highlight effect (for example, animation
 * scale) again, and `mouseout` should not downplay the highlight
 * effect. So the listener of `mouseover` and `mouseout` should
 * check `isInEmphasis`.
 *
 * @param {module:zrender/Element} el
 * @return {boolean}
 */
export function isInEmphasis(el) {
    return el && el.__isEmphasisEntered;
}

function onElementMouseOver(e) {
    if (this.__hoverSilentOnTouch && e.zrByTouch) {
        return;
    }

    // Only if element is not in emphasis status
    !this.__isEmphasisEntered && traverseCall(this, doSingleEnterHover);
}

function onElementMouseOut(e) {
    if (this.__hoverSilentOnTouch && e.zrByTouch) {
        return;
    }

    // Only if element is not in emphasis status
    !this.__isEmphasisEntered && traverseCall(this, doSingleLeaveHover);
}

function enterEmphasis() {
    this.__isEmphasisEntered = true;
    traverseCall(this, doSingleEnterHover);
}

function leaveEmphasis() {
    this.__isEmphasisEntered = false;
    traverseCall(this, doSingleLeaveHover);
}

/**
 * Set hover style (namely "emphasis style") of element,
 * based on the current style of the given `el`.
 *
 * (1)
 * **CONSTRAINTS** for this method:
 * <A> This method MUST be called after all of the normal styles having been adopted
 * to the `el`.
 * <B> The input `hoverStyle` (that is, "emphasis style") MUST be the subset of the
 * "normal style" having been set to the el.
 * <C> `color` MUST be one of the "normal styles" (because color might be lifted as
 * a default hover style).
 *
 * The reason: this method treat the current style of the `el` as the "normal style"
 * and cache them when enter/update the "emphasis style". Consider the case: the `el`
 * is in "emphasis" state and `setOption`/`dispatchAction` trigger the style updating
 * logic, where the el should shift from the original emphasis style to the new
 * "emphasis style" and should be able to "downplay" back to the new "normal style".
 *
 * Indeed, it is error-prone to make a interface has so many constraints, but I have
 * not found a better solution yet to fit the backward compatibility, performance and
 * the current programming style.
 *
 * (2)
 * Call the method for a "root" element once. Do not call it for each descendants.
 * If the descendants elemenets of a group has itself hover style different from the
 * root group, we can simply mount the style on `el.hoverStyle` for them, but should
 * not call this method for them.
 *
 * @param {module:zrender/Element} el
 * @param {Object|boolean} [hoverStyle] See `graphic.setElementHoverStyle`.
 * @param {Object} [opt]
 * @param {boolean} [opt.hoverSilentOnTouch=false] See `graphic.setAsHoverStyleTrigger`.
 */
export function setHoverStyle(el, hoverStyle, opt) {
    el.isGroup
        ? el.traverse(function (child) {
            // If element has sepcified hoverStyle, then use it instead of given hoverStyle
            // Often used when item group has a label element and it's hoverStyle is different
            !child.isGroup && setElementHoverStyle(child, child.hoverStyle || hoverStyle);
        })
        : setElementHoverStyle(el, el.hoverStyle || hoverStyle);

    setAsHoverStyleTrigger(el, opt);
}

/**
 * @param {Object|boolean} [opt] If `false`, means disable trigger.
 * @param {boolean} [opt.hoverSilentOnTouch=false]
 *        In touch device, mouseover event will be trigger on touchstart event
 *        (see module:zrender/dom/HandlerProxy). By this mechanism, we can
 *        conveniently use hoverStyle when tap on touch screen without additional
 *        code for compatibility.
 *        But if the chart/component has select feature, which usually also use
 *        hoverStyle, there might be conflict between 'select-highlight' and
 *        'hover-highlight' especially when roam is enabled (see geo for example).
 *        In this case, hoverSilentOnTouch should be used to disable hover-highlight
 *        on touch device.
 */
export function setAsHoverStyleTrigger(el, opt) {
    var disable = opt === false;
    el.__hoverSilentOnTouch = opt != null && opt.hoverSilentOnTouch;

    // Simple optimize, since this method might be
    // called for each elements of a group in some cases.
    if (!disable || el.__hoverStyleTrigger) {
        var method = disable ? 'off' : 'on';

        // Duplicated function will be auto-ignored, see Eventful.js.
        el[method]('mouseover', onElementMouseOver)[method]('mouseout', onElementMouseOut);
        // Emphasis, normal can be triggered manually
        el[method]('emphasis', enterEmphasis)[method]('normal', leaveEmphasis);

        el.__hoverStyleTrigger = !disable;
    }
}

/**
 * See more info in `setTextStyleCommon`.
 * @param {Object|module:zrender/graphic/Style} normalStyle
 * @param {Object} emphasisStyle
 * @param {module:echarts/model/Model} normalModel
 * @param {module:echarts/model/Model} emphasisModel
 * @param {Object} opt Check `opt` of `setTextStyleCommon` to find other props.
 * @param {string|Function} [opt.defaultText]
 * @param {module:echarts/model/Model} [opt.labelFetcher] Fetch text by
 *      `opt.labelFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {module:echarts/model/Model} [opt.labelDataIndex] Fetch text by
 *      `opt.textFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {module:echarts/model/Model} [opt.labelDimIndex] Fetch text by
 *      `opt.textFetcher.getFormattedLabel(opt.labelDataIndex, 'normal'/'emphasis', null, opt.labelDimIndex)`
 * @param {Object} [normalSpecified]
 * @param {Object} [emphasisSpecified]
 */
export function setLabelStyle(
    normalStyle, emphasisStyle,
    normalModel, emphasisModel,
    opt,
    normalSpecified, emphasisSpecified
) {
    opt = opt || EMPTY_OBJ;
    var labelFetcher = opt.labelFetcher;
    var labelDataIndex = opt.labelDataIndex;
    var labelDimIndex = opt.labelDimIndex;

    // This scenario, `label.normal.show = true; label.emphasis.show = false`,
    // is not supported util someone requests.

    var showNormal = normalModel.getShallow('show');
    var showEmphasis = emphasisModel.getShallow('show');

    // Consider performance, only fetch label when necessary.
    // If `normal.show` is `false` and `emphasis.show` is `true` and `emphasis.formatter` is not set,
    // label should be displayed, where text is fetched by `normal.formatter` or `opt.defaultText`.
    var baseText;
    if (showNormal || showEmphasis) {
        if (labelFetcher) {
            baseText = labelFetcher.getFormattedLabel(labelDataIndex, 'normal', null, labelDimIndex);
        }
        if (baseText == null) {
            baseText = zrUtil.isFunction(opt.defaultText) ? opt.defaultText(labelDataIndex, opt) : opt.defaultText;
        }
    }
    var normalStyleText = showNormal ? baseText : null;
    var emphasisStyleText = showEmphasis
        ? zrUtil.retrieve2(
            labelFetcher
                ? labelFetcher.getFormattedLabel(labelDataIndex, 'emphasis', null, labelDimIndex)
                : null,
            baseText
        )
        : null;

    // Optimize: If style.text is null, text will not be drawn.
    if (normalStyleText != null || emphasisStyleText != null) {
        // Always set `textStyle` even if `normalStyle.text` is null, because default
        // values have to be set on `normalStyle`.
        // If we set default values on `emphasisStyle`, consider case:
        // Firstly, `setOption(... label: {normal: {text: null}, emphasis: {show: true}} ...);`
        // Secondly, `setOption(... label: {noraml: {show: true, text: 'abc', color: 'red'} ...);`
        // Then the 'red' will not work on emphasis.
        setTextStyle(normalStyle, normalModel, normalSpecified, opt);
        setTextStyle(emphasisStyle, emphasisModel, emphasisSpecified, opt, true);
    }

    normalStyle.text = normalStyleText;
    emphasisStyle.text = emphasisStyleText;
}

/**
 * Set basic textStyle properties.
 * See more info in `setTextStyleCommon`.
 * @param {Object|module:zrender/graphic/Style} textStyle
 * @param {module:echarts/model/Model} model
 * @param {Object} [specifiedTextStyle] Can be overrided by settings in model.
 * @param {Object} [opt] See `opt` of `setTextStyleCommon`.
 * @param {boolean} [isEmphasis]
 */
export function setTextStyle(
    textStyle, textStyleModel, specifiedTextStyle, opt, isEmphasis
) {
    setTextStyleCommon(textStyle, textStyleModel, opt, isEmphasis);
    specifiedTextStyle && zrUtil.extend(textStyle, specifiedTextStyle);
    // textStyle.host && textStyle.host.dirty && textStyle.host.dirty(false);

    return textStyle;
}

/**
 * Set text option in the style.
 * See more info in `setTextStyleCommon`.
 * @deprecated
 * @param {Object} textStyle
 * @param {module:echarts/model/Model} labelModel
 * @param {string|boolean} defaultColor Default text color.
 *        If set as false, it will be processed as a emphasis style.
 */
export function setText(textStyle, labelModel, defaultColor) {
    var opt = {isRectText: true};
    var isEmphasis;

    if (defaultColor === false) {
        isEmphasis = true;
    }
    else {
        // Support setting color as 'auto' to get visual color.
        opt.autoColor = defaultColor;
    }
    setTextStyleCommon(textStyle, labelModel, opt, isEmphasis);
    // textStyle.host && textStyle.host.dirty && textStyle.host.dirty(false);
}

/**
 * The uniform entry of set text style, that is, retrieve style definitions
 * from `model` and set to `textStyle` object.
 *
 * Never in merge mode, but in overwrite mode, that is, all of the text style
 * properties will be set. (Consider the states of normal and emphasis and
 * default value can be adopted, merge would make the logic too complicated
 * to manage.)
 *
 * The `textStyle` object can either be a plain object or an instance of
 * `zrender/src/graphic/Style`, and either be the style of normal or emphasis.
 * After this mothod called, the `textStyle` object can then be used in
 * `el.setStyle(textStyle)` or `el.hoverStyle = textStyle`.
 *
 * Default value will be adopted and `insideRollbackOpt` will be created.
 * See `applyDefaultTextStyle` `rollbackDefaultTextStyle` for more details.
 *
 * opt: {
 *      disableBox: boolean, Whether diable drawing box of block (outer most).
 *      isRectText: boolean,
 *      autoColor: string, specify a color when color is 'auto',
 *              for textFill, textStroke, textBackgroundColor, and textBorderColor.
 *              If autoColor specified, it is used as default textFill.
 *      useInsideStyle:
 *              `true`: Use inside style (textFill, textStroke, textStrokeWidth)
 *                  if `textFill` is not specified.
 *              `false`: Do not use inside style.
 *              `null/undefined`: use inside style if `isRectText` is true and
 *                  `textFill` is not specified and textPosition contains `'inside'`.
 *      forceRich: boolean
 * }
 */
function setTextStyleCommon(textStyle, textStyleModel, opt, isEmphasis) {
    // Consider there will be abnormal when merge hover style to normal style if given default value.
    opt = opt || EMPTY_OBJ;

    if (opt.isRectText) {
        var textPosition = textStyleModel.getShallow('position')
            || (isEmphasis ? null : 'inside');
        // 'outside' is not a valid zr textPostion value, but used
        // in bar series, and magric type should be considered.
        textPosition === 'outside' && (textPosition = 'top');
        textStyle.textPosition = textPosition;
        textStyle.textOffset = textStyleModel.getShallow('offset');
        var labelRotate = textStyleModel.getShallow('rotate');
        labelRotate != null && (labelRotate *= Math.PI / 180);
        textStyle.textRotation = labelRotate;
        textStyle.textDistance = zrUtil.retrieve2(
            textStyleModel.getShallow('distance'), isEmphasis ? null : 5
        );
    }

    var ecModel = textStyleModel.ecModel;
    var globalTextStyle = ecModel && ecModel.option.textStyle;

    // Consider case:
    // {
    //     data: [{
    //         value: 12,
    //         label: {
    //             rich: {
    //                 // no 'a' here but using parent 'a'.
    //             }
    //         }
    //     }],
    //     rich: {
    //         a: { ... }
    //     }
    // }
    var richItemNames = getRichItemNames(textStyleModel);
    var richResult;
    if (richItemNames) {
        richResult = {};
        for (var name in richItemNames) {
            if (richItemNames.hasOwnProperty(name)) {
                // Cascade is supported in rich.
                var richTextStyle = textStyleModel.getModel(['rich', name]);
                // In rich, never `disableBox`.
                setTokenTextStyle(richResult[name] = {}, richTextStyle, globalTextStyle, opt, isEmphasis);
            }
        }
    }
    textStyle.rich = richResult;

    setTokenTextStyle(textStyle, textStyleModel, globalTextStyle, opt, isEmphasis, true);

    if (opt.forceRich && !opt.textStyle) {
        opt.textStyle = {};
    }

    return textStyle;
}

// Consider case:
// {
//     data: [{
//         value: 12,
//         label: {
//             rich: {
//                 // no 'a' here but using parent 'a'.
//             }
//         }
//     }],
//     rich: {
//         a: { ... }
//     }
// }
function getRichItemNames(textStyleModel) {
    // Use object to remove duplicated names.
    var richItemNameMap;
    while (textStyleModel && textStyleModel !== textStyleModel.ecModel) {
        var rich = (textStyleModel.option || EMPTY_OBJ).rich;
        if (rich) {
            richItemNameMap = richItemNameMap || {};
            for (var name in rich) {
                if (rich.hasOwnProperty(name)) {
                    richItemNameMap[name] = 1;
                }
            }
        }
        textStyleModel = textStyleModel.parentModel;
    }
    return richItemNameMap;
}

function setTokenTextStyle(textStyle, textStyleModel, globalTextStyle, opt, isEmphasis, isBlock) {
    // In merge mode, default value should not be given.
    globalTextStyle = !isEmphasis && globalTextStyle || EMPTY_OBJ;

    textStyle.textFill = getAutoColor(textStyleModel.getShallow('color'), opt)
        || globalTextStyle.color;
    textStyle.textStroke = getAutoColor(textStyleModel.getShallow('textBorderColor'), opt)
        || globalTextStyle.textBorderColor;
    textStyle.textStrokeWidth = zrUtil.retrieve2(
        textStyleModel.getShallow('textBorderWidth'),
        globalTextStyle.textBorderWidth
    );

    // Save original textPosition, because style.textPosition will be repalced by
    // real location (like [10, 30]) in zrender.
    textStyle.insideRawTextPosition = textStyle.textPosition;

    if (!isEmphasis) {
        if (isBlock) {
            textStyle.insideRollbackOpt = opt;
            applyDefaultTextStyle(textStyle);
        }

        // Set default finally.
        if (textStyle.textFill == null) {
            textStyle.textFill = opt.autoColor;
        }
    }

    // Do not use `getFont` here, because merge should be supported, where
    // part of these properties may be changed in emphasis style, and the
    // others should remain their original value got from normal style.
    textStyle.fontStyle = textStyleModel.getShallow('fontStyle') || globalTextStyle.fontStyle;
    textStyle.fontWeight = textStyleModel.getShallow('fontWeight') || globalTextStyle.fontWeight;
    textStyle.fontSize = textStyleModel.getShallow('fontSize') || globalTextStyle.fontSize;
    textStyle.fontFamily = textStyleModel.getShallow('fontFamily') || globalTextStyle.fontFamily;

    textStyle.textAlign = textStyleModel.getShallow('align');
    textStyle.textVerticalAlign = textStyleModel.getShallow('verticalAlign')
        || textStyleModel.getShallow('baseline');

    textStyle.textLineHeight = textStyleModel.getShallow('lineHeight');
    textStyle.textWidth = textStyleModel.getShallow('width');
    textStyle.textHeight = textStyleModel.getShallow('height');
    textStyle.textTag = textStyleModel.getShallow('tag');

    if (!isBlock || !opt.disableBox) {
        textStyle.textBackgroundColor = getAutoColor(textStyleModel.getShallow('backgroundColor'), opt);
        textStyle.textPadding = textStyleModel.getShallow('padding');
        textStyle.textBorderColor = getAutoColor(textStyleModel.getShallow('borderColor'), opt);
        textStyle.textBorderWidth = textStyleModel.getShallow('borderWidth');
        textStyle.textBorderRadius = textStyleModel.getShallow('borderRadius');

        textStyle.textBoxShadowColor = textStyleModel.getShallow('shadowColor');
        textStyle.textBoxShadowBlur = textStyleModel.getShallow('shadowBlur');
        textStyle.textBoxShadowOffsetX = textStyleModel.getShallow('shadowOffsetX');
        textStyle.textBoxShadowOffsetY = textStyleModel.getShallow('shadowOffsetY');
    }

    textStyle.textShadowColor = textStyleModel.getShallow('textShadowColor')
        || globalTextStyle.textShadowColor;
    textStyle.textShadowBlur = textStyleModel.getShallow('textShadowBlur')
        || globalTextStyle.textShadowBlur;
    textStyle.textShadowOffsetX = textStyleModel.getShallow('textShadowOffsetX')
        || globalTextStyle.textShadowOffsetX;
    textStyle.textShadowOffsetY = textStyleModel.getShallow('textShadowOffsetY')
        || globalTextStyle.textShadowOffsetY;
}

function getAutoColor(color, opt) {
    return color !== 'auto' ? color : (opt && opt.autoColor) ? opt.autoColor : null;
}

/**
 * Give some default value to the input `textStyle` object, based on the current settings
 * in this `textStyle` object.
 *
 * The Scenario:
 * when text position is `inside` and `textFill` is not specified, we show
 * text border by default for better view. But it should be considered that text position
 * might be changed when hovering or being emphasis, where the `insideRollback` is used to
 * restore the style.
 *
 * Usage (& NOTICE):
 * When a style object (eithor plain object or instance of `zrender/src/graphic/Style`) is
 * about to be modified on its text related properties, `rollbackDefaultTextStyle` should
 * be called before the modification and `applyDefaultTextStyle` should be called after that.
 * (For the case that all of the text related properties is reset, like `setTextStyleCommon`
 * does, `rollbackDefaultTextStyle` is not needed to be called).
 */
function applyDefaultTextStyle(textStyle) {
    var opt = textStyle.insideRollbackOpt;

    // Only `insideRollbackOpt` created (in `setTextStyleCommon`),
    // applyDefaultTextStyle works.
    if (!opt || textStyle.textFill != null) {
        return;
    }

    var useInsideStyle = opt.useInsideStyle;
    var textPosition = textStyle.insideRawTextPosition;
    var insideRollback;
    var autoColor = opt.autoColor;

    if (useInsideStyle !== false
        && (useInsideStyle === true
            || (opt.isRectText
                && textPosition
                // textPosition can be [10, 30]
                && typeof textPosition === 'string'
                && textPosition.indexOf('inside') >= 0
            )
        )
    ) {
        insideRollback = {
            textFill: null,
            textStroke: textStyle.textStroke,
            textStrokeWidth: textStyle.textStrokeWidth
        };
        textStyle.textFill = '#fff';
        // Consider text with #fff overflow its container.
        if (textStyle.textStroke == null) {
            textStyle.textStroke = autoColor;
            textStyle.textStrokeWidth == null && (textStyle.textStrokeWidth = 2);
        }
    }
    else if (autoColor != null) {
        insideRollback = {textFill: null};
        textStyle.textFill = autoColor;
    }

    // Always set `insideRollback`, for clearing previous.
    if (insideRollback) {
        textStyle.insideRollback = insideRollback;
    }
}

/**
 * Consider the case: in a scatter,
 * label: {
 *     normal: {position: 'inside'},
 *     emphasis: {position: 'top'}
 * }
 * In the normal state, the `textFill` will be set as '#fff' for pretty view (see
 * `applyDefaultTextStyle`), but when switching to emphasis state, the `textFill`
 * should be retured to 'autoColor', but not keep '#fff'.
 */
function rollbackDefaultTextStyle(style) {
    var insideRollback = style.insideRollback;
    if (insideRollback) {
        style.textFill = insideRollback.textFill;
        style.textStroke = insideRollback.textStroke;
        style.textStrokeWidth = insideRollback.textStrokeWidth;
        style.insideRollback = null;
    }
}

export function getFont(opt, ecModel) {
    // ecModel or default text style model.
    var gTextStyleModel = ecModel || ecModel.getModel('textStyle');
    return zrUtil.trim([
        // FIXME in node-canvas fontWeight is before fontStyle
        opt.fontStyle || gTextStyleModel && gTextStyleModel.getShallow('fontStyle') || '',
        opt.fontWeight || gTextStyleModel && gTextStyleModel.getShallow('fontWeight') || '',
        (opt.fontSize || gTextStyleModel && gTextStyleModel.getShallow('fontSize') || 12) + 'px',
        opt.fontFamily || gTextStyleModel && gTextStyleModel.getShallow('fontFamily') || 'sans-serif'
    ].join(' '));
}

function animateOrSetProps(isUpdate, el, props, animatableModel, dataIndex, cb) {
    if (typeof dataIndex === 'function') {
        cb = dataIndex;
        dataIndex = null;
    }
    // Do not check 'animation' property directly here. Consider this case:
    // animation model is an `itemModel`, whose does not have `isAnimationEnabled`
    // but its parent model (`seriesModel`) does.
    var animationEnabled = animatableModel && animatableModel.isAnimationEnabled();

    if (animationEnabled) {
        var postfix = isUpdate ? 'Update' : '';
        var duration = animatableModel.getShallow('animationDuration' + postfix);
        var animationEasing = animatableModel.getShallow('animationEasing' + postfix);
        var animationDelay = animatableModel.getShallow('animationDelay' + postfix);
        if (typeof animationDelay === 'function') {
            animationDelay = animationDelay(
                dataIndex,
                animatableModel.getAnimationDelayParams
                    ? animatableModel.getAnimationDelayParams(el, dataIndex)
                    : null
            );
        }
        if (typeof duration === 'function') {
            duration = duration(dataIndex);
        }

        duration > 0
            ? el.animateTo(props, duration, animationDelay || 0, animationEasing, cb, !!cb)
            : (el.stopAnimation(), el.attr(props), cb && cb());
    }
    else {
        el.stopAnimation();
        el.attr(props);
        cb && cb();
    }
}

/**
 * Update graphic element properties with or without animation according to the
 * configuration in series.
 *
 * Caution: this method will stop previous animation.
 * So if do not use this method to one element twice before
 * animation starts, unless you know what you are doing.
 *
 * @param {module:zrender/Element} el
 * @param {Object} props
 * @param {module:echarts/model/Model} [animatableModel]
 * @param {number} [dataIndex]
 * @param {Function} [cb]
 * @example
 *     graphic.updateProps(el, {
 *         position: [100, 100]
 *     }, seriesModel, dataIndex, function () { console.log('Animation done!'); });
 *     // Or
 *     graphic.updateProps(el, {
 *         position: [100, 100]
 *     }, seriesModel, function () { console.log('Animation done!'); });
 */
export function updateProps(el, props, animatableModel, dataIndex, cb) {
    animateOrSetProps(true, el, props, animatableModel, dataIndex, cb);
}

/**
 * Init graphic element properties with or without animation according to the
 * configuration in series.
 *
 * Caution: this method will stop previous animation.
 * So if do not use this method to one element twice before
 * animation starts, unless you know what you are doing.
 *
 * @param {module:zrender/Element} el
 * @param {Object} props
 * @param {module:echarts/model/Model} [animatableModel]
 * @param {number} [dataIndex]
 * @param {Function} cb
 */
export function initProps(el, props, animatableModel, dataIndex, cb) {
    animateOrSetProps(false, el, props, animatableModel, dataIndex, cb);
}

/**
 * Get transform matrix of target (param target),
 * in coordinate of its ancestor (param ancestor)
 *
 * @param {module:zrender/mixin/Transformable} target
 * @param {module:zrender/mixin/Transformable} [ancestor]
 */
export function getTransform(target, ancestor) {
    var mat = matrix.identity([]);

    while (target && target !== ancestor) {
        matrix.mul(mat, target.getLocalTransform(), mat);
        target = target.parent;
    }

    return mat;
}

/**
 * Apply transform to an vertex.
 * @param {Array.<number>} target [x, y]
 * @param {Array.<number>|TypedArray.<number>|Object} transform Can be:
 *      + Transform matrix: like [1, 0, 0, 1, 0, 0]
 *      + {position, rotation, scale}, the same as `zrender/Transformable`.
 * @param {boolean=} invert Whether use invert matrix.
 * @return {Array.<number>} [x, y]
 */
export function applyTransform(target, transform, invert) {
    if (transform && !zrUtil.isArrayLike(transform)) {
        transform = Transformable.getLocalTransform(transform);
    }

    if (invert) {
        transform = matrix.invert([], transform);
    }
    return vector.applyTransform([], target, transform);
}

/**
 * @param {string} direction 'left' 'right' 'top' 'bottom'
 * @param {Array.<number>} transform Transform matrix: like [1, 0, 0, 1, 0, 0]
 * @param {boolean=} invert Whether use invert matrix.
 * @return {string} Transformed direction. 'left' 'right' 'top' 'bottom'
 */
export function transformDirection(direction, transform, invert) {

    // Pick a base, ensure that transform result will not be (0, 0).
    var hBase = (transform[4] === 0 || transform[5] === 0 || transform[0] === 0)
        ? 1 : Math.abs(2 * transform[4] / transform[0]);
    var vBase = (transform[4] === 0 || transform[5] === 0 || transform[2] === 0)
        ? 1 : Math.abs(2 * transform[4] / transform[2]);

    var vertex = [
        direction === 'left' ? -hBase : direction === 'right' ? hBase : 0,
        direction === 'top' ? -vBase : direction === 'bottom' ? vBase : 0
    ];

    vertex = applyTransform(vertex, transform, invert);

    return Math.abs(vertex[0]) > Math.abs(vertex[1])
        ? (vertex[0] > 0 ? 'right' : 'left')
        : (vertex[1] > 0 ? 'bottom' : 'top');
}

/**
 * Apply group transition animation from g1 to g2.
 * If no animatableModel, no animation.
 */
export function groupTransition(g1, g2, animatableModel, cb) {
    if (!g1 || !g2) {
        return;
    }

    function getElMap(g) {
        var elMap = {};
        g.traverse(function (el) {
            if (!el.isGroup && el.anid) {
                elMap[el.anid] = el;
            }
        });
        return elMap;
    }
    function getAnimatableProps(el) {
        var obj = {
            position: vector.clone(el.position),
            rotation: el.rotation
        };
        if (el.shape) {
            obj.shape = zrUtil.extend({}, el.shape);
        }
        return obj;
    }
    var elMap1 = getElMap(g1);

    g2.traverse(function (el) {
        if (!el.isGroup && el.anid) {
            var oldEl = elMap1[el.anid];
            if (oldEl) {
                var newProp = getAnimatableProps(el);
                el.attr(getAnimatableProps(oldEl));
                updateProps(el, newProp, animatableModel, el.dataIndex);
            }
            // else {
            //     if (el.previousProps) {
            //         graphic.updateProps
            //     }
            // }
        }
    });
}

/**
 * @param {Array.<Array.<number>>} points Like: [[23, 44], [53, 66], ...]
 * @param {Object} rect {x, y, width, height}
 * @return {Array.<Array.<number>>} A new clipped points.
 */
export function clipPointsByRect(points, rect) {
    // FIXME: this way migth be incorrect when grpahic clipped by a corner.
    // and when element have border.
    return zrUtil.map(points, function (point) {
        var x = point[0];
        x = mathMax(x, rect.x);
        x = mathMin(x, rect.x + rect.width);
        var y = point[1];
        y = mathMax(y, rect.y);
        y = mathMin(y, rect.y + rect.height);
        return [x, y];
    });
}

/**
 * @param {Object} targetRect {x, y, width, height}
 * @param {Object} rect {x, y, width, height}
 * @return {Object} A new clipped rect. If rect size are negative, return undefined.
 */
export function clipRectByRect(targetRect, rect) {
    var x = mathMax(targetRect.x, rect.x);
    var x2 = mathMin(targetRect.x + targetRect.width, rect.x + rect.width);
    var y = mathMax(targetRect.y, rect.y);
    var y2 = mathMin(targetRect.y + targetRect.height, rect.y + rect.height);

    // If the total rect is cliped, nothing, including the border,
    // should be painted. So return undefined.
    if (x2 >= x && y2 >= y) {
        return {
            x: x,
            y: y,
            width: x2 - x,
            height: y2 - y
        };
    }
}

/**
 * @param {string} iconStr Support 'image://' or 'path://' or direct svg path.
 * @param {Object} [opt] Properties of `module:zrender/Element`, except `style`.
 * @param {Object} [rect] {x, y, width, height}
 * @return {module:zrender/Element} Icon path or image element.
 */
export function createIcon(iconStr, opt, rect) {
    opt = zrUtil.extend({rectHover: true}, opt);
    var style = opt.style = {strokeNoScale: true};
    rect = rect || {x: -1, y: -1, width: 2, height: 2};

    if (iconStr) {
        return iconStr.indexOf('image://') === 0
            ? (
                style.image = iconStr.slice(8),
                zrUtil.defaults(style, rect),
                new ZImage(opt)
            )
            : (
                makePath(
                    iconStr.replace('path://', ''),
                    opt,
                    rect,
                    'center'
                )
            );
    }
}

export {
    Group,
    ZImage as Image,
    Text,
    Circle,
    Sector,
    Ring,
    Polygon,
    Polyline,
    Rect,
    Line,
    BezierCurve,
    Arc,
    IncrementalDisplayable,
    CompoundPath,
    LinearGradient,
    RadialGradient,
    BoundingRect
};