BrushController.js 26.3 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

/*
* 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.
*/

var _config = require("../../config");

var __DEV__ = _config.__DEV__;

var zrUtil = require("zrender/lib/core/util");

var Eventful = require("zrender/lib/mixin/Eventful");

var graphic = require("../../util/graphic");

var interactionMutex = require("./interactionMutex");

var DataDiffer = require("../../data/DataDiffer");

/*
* 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.
*/
var curry = zrUtil.curry;
var each = zrUtil.each;
var map = zrUtil.map;
var mathMin = Math.min;
var mathMax = Math.max;
var mathPow = Math.pow;
var COVER_Z = 10000;
var UNSELECT_THRESHOLD = 6;
var MIN_RESIZE_LINE_WIDTH = 6;
var MUTEX_RESOURCE_KEY = 'globalPan';
var DIRECTION_MAP = {
  w: [0, 0],
  e: [0, 1],
  n: [1, 0],
  s: [1, 1]
};
var CURSOR_MAP = {
  w: 'ew',
  e: 'ew',
  n: 'ns',
  s: 'ns',
  ne: 'nesw',
  sw: 'nesw',
  nw: 'nwse',
  se: 'nwse'
};
var DEFAULT_BRUSH_OPT = {
  brushStyle: {
    lineWidth: 2,
    stroke: 'rgba(0,0,0,0.3)',
    fill: 'rgba(0,0,0,0.1)'
  },
  transformable: true,
  brushMode: 'single',
  removeOnClick: false
};
var baseUID = 0;
/**
 * @alias module:echarts/component/helper/BrushController
 * @constructor
 * @mixin {module:zrender/mixin/Eventful}
 * @event module:echarts/component/helper/BrushController#brush
 *        params:
 *            areas: Array.<Array>, coord relates to container group,
 *                                    If no container specified, to global.
 *            opt {
 *                isEnd: boolean,
 *                removeOnClick: boolean
 *            }
 *
 * @param {module:zrender/zrender~ZRender} zr
 */

function BrushController(zr) {
  Eventful.call(this);
  /**
   * @type {module:zrender/zrender~ZRender}
   * @private
   */

  this._zr = zr;
  /**
   * @type {module:zrender/container/Group}
   * @readOnly
   */

  this.group = new graphic.Group();
  /**
   * Only for drawing (after enabledBrush).
   *     'line', 'rect', 'polygon' or false
   *     If passing false/null/undefined, disable brush.
   *     If passing 'auto', determined by panel.defaultBrushType
   * @private
   * @type {string}
   */

  this._brushType;
  /**
   * Only for drawing (after enabledBrush).
   *
   * @private
   * @type {Object}
   */

  this._brushOption;
  /**
   * @private
   * @type {Object}
   */

  this._panels;
  /**
   * @private
   * @type {Array.<nubmer>}
   */

  this._track = [];
  /**
   * @private
   * @type {boolean}
   */

  this._dragging;
  /**
   * @private
   * @type {Array}
   */

  this._covers = [];
  /**
   * @private
   * @type {moudule:zrender/container/Group}
   */

  this._creatingCover;
  /**
   * `true` means global panel
   * @private
   * @type {module:zrender/container/Group|boolean}
   */

  this._creatingPanel;
  /**
   * @private
   * @type {boolean}
   */

  this._enableGlobalPan;
  /**
   * @private
   * @type {boolean}
   */

  /**
   * @private
   * @type {string}
   */
  this._uid = 'brushController_' + baseUID++;
  /**
   * @private
   * @type {Object}
   */

  this._handlers = {};
  each(mouseHandlers, function (handler, eventName) {
    this._handlers[eventName] = zrUtil.bind(handler, this);
  }, this);
}

BrushController.prototype = {
  constructor: BrushController,

  /**
   * If set to null/undefined/false, select disabled.
   * @param {Object} brushOption
   * @param {string|boolean} brushOption.brushType 'line', 'rect', 'polygon' or false
   *                          If passing false/null/undefined, disable brush.
   *                          If passing 'auto', determined by panel.defaultBrushType.
   *                              ('auto' can not be used in global panel)
   * @param {number} [brushOption.brushMode='single'] 'single' or 'multiple'
   * @param {boolean} [brushOption.transformable=true]
   * @param {boolean} [brushOption.removeOnClick=false]
   * @param {Object} [brushOption.brushStyle]
   * @param {number} [brushOption.brushStyle.width]
   * @param {number} [brushOption.brushStyle.lineWidth]
   * @param {string} [brushOption.brushStyle.stroke]
   * @param {string} [brushOption.brushStyle.fill]
   * @param {number} [brushOption.z]
   */
  enableBrush: function (brushOption) {
    this._brushType && doDisableBrush(this);
    brushOption.brushType && doEnableBrush(this, brushOption);
    return this;
  },

  /**
   * @param {Array.<Object>} panelOpts If not pass, it is global brush.
   *        Each items: {
   *            panelId, // mandatory.
   *            clipPath, // mandatory. function.
   *            isTargetByCursor, // mandatory. function.
   *            defaultBrushType, // optional, only used when brushType is 'auto'.
   *            getLinearBrushOtherExtent, // optional. function.
   *        }
   */
  setPanels: function (panelOpts) {
    if (panelOpts && panelOpts.length) {
      var panels = this._panels = {};
      zrUtil.each(panelOpts, function (panelOpts) {
        panels[panelOpts.panelId] = zrUtil.clone(panelOpts);
      });
    } else {
      this._panels = null;
    }

    return this;
  },

  /**
   * @param {Object} [opt]
   * @return {boolean} [opt.enableGlobalPan=false]
   */
  mount: function (opt) {
    opt = opt || {};
    this._enableGlobalPan = opt.enableGlobalPan;
    var thisGroup = this.group;

    this._zr.add(thisGroup);

    thisGroup.attr({
      position: opt.position || [0, 0],
      rotation: opt.rotation || 0,
      scale: opt.scale || [1, 1]
    });
    this._transform = thisGroup.getLocalTransform();
    return this;
  },
  eachCover: function (cb, context) {
    each(this._covers, cb, context);
  },

  /**
   * Update covers.
   * @param {Array.<Object>} brushOptionList Like:
   *        [
   *            {id: 'xx', brushType: 'line', range: [23, 44], brushStyle, transformable},
   *            {id: 'yy', brushType: 'rect', range: [[23, 44], [23, 54]]},
   *            ...
   *        ]
   *        `brushType` is required in each cover info. (can not be 'auto')
   *        `id` is not mandatory.
   *        `brushStyle`, `transformable` is not mandatory, use DEFAULT_BRUSH_OPT by default.
   *        If brushOptionList is null/undefined, all covers removed.
   */
  updateCovers: function (brushOptionList) {
    brushOptionList = zrUtil.map(brushOptionList, function (brushOption) {
      return zrUtil.merge(zrUtil.clone(DEFAULT_BRUSH_OPT), brushOption, true);
    });
    var tmpIdPrefix = '\0-brush-index-';
    var oldCovers = this._covers;
    var newCovers = this._covers = [];
    var controller = this;
    var creatingCover = this._creatingCover;
    new DataDiffer(oldCovers, brushOptionList, oldGetKey, getKey).add(addOrUpdate).update(addOrUpdate).remove(remove).execute();
    return this;

    function getKey(brushOption, index) {
      return (brushOption.id != null ? brushOption.id : tmpIdPrefix + index) + '-' + brushOption.brushType;
    }

    function oldGetKey(cover, index) {
      return getKey(cover.__brushOption, index);
    }

    function addOrUpdate(newIndex, oldIndex) {
      var newBrushOption = brushOptionList[newIndex]; // Consider setOption in event listener of brushSelect,
      // where updating cover when creating should be forbiden.

      if (oldIndex != null && oldCovers[oldIndex] === creatingCover) {
        newCovers[newIndex] = oldCovers[oldIndex];
      } else {
        var cover = newCovers[newIndex] = oldIndex != null ? (oldCovers[oldIndex].__brushOption = newBrushOption, oldCovers[oldIndex]) : endCreating(controller, createCover(controller, newBrushOption));
        updateCoverAfterCreation(controller, cover);
      }
    }

    function remove(oldIndex) {
      if (oldCovers[oldIndex] !== creatingCover) {
        controller.group.remove(oldCovers[oldIndex]);
      }
    }
  },
  unmount: function () {
    this.enableBrush(false); // container may 'removeAll' outside.

    clearCovers(this);

    this._zr.remove(this.group);

    return this;
  },
  dispose: function () {
    this.unmount();
    this.off();
  }
};
zrUtil.mixin(BrushController, Eventful);

function doEnableBrush(controller, brushOption) {
  var zr = controller._zr; // Consider roam, which takes globalPan too.

  if (!controller._enableGlobalPan) {
    interactionMutex.take(zr, MUTEX_RESOURCE_KEY, controller._uid);
  }

  each(controller._handlers, function (handler, eventName) {
    zr.on(eventName, handler);
  });
  controller._brushType = brushOption.brushType;
  controller._brushOption = zrUtil.merge(zrUtil.clone(DEFAULT_BRUSH_OPT), brushOption, true);
}

function doDisableBrush(controller) {
  var zr = controller._zr;
  interactionMutex.release(zr, MUTEX_RESOURCE_KEY, controller._uid);
  each(controller._handlers, function (handler, eventName) {
    zr.off(eventName, handler);
  });
  controller._brushType = controller._brushOption = null;
}

function createCover(controller, brushOption) {
  var cover = coverRenderers[brushOption.brushType].createCover(controller, brushOption);
  cover.__brushOption = brushOption;
  updateZ(cover, brushOption);
  controller.group.add(cover);
  return cover;
}

function endCreating(controller, creatingCover) {
  var coverRenderer = getCoverRenderer(creatingCover);

  if (coverRenderer.endCreating) {
    coverRenderer.endCreating(controller, creatingCover);
    updateZ(creatingCover, creatingCover.__brushOption);
  }

  return creatingCover;
}

function updateCoverShape(controller, cover) {
  var brushOption = cover.__brushOption;
  getCoverRenderer(cover).updateCoverShape(controller, cover, brushOption.range, brushOption);
}

function updateZ(cover, brushOption) {
  var z = brushOption.z;
  z == null && (z = COVER_Z);
  cover.traverse(function (el) {
    el.z = z;
    el.z2 = z; // Consider in given container.
  });
}

function updateCoverAfterCreation(controller, cover) {
  getCoverRenderer(cover).updateCommon(controller, cover);
  updateCoverShape(controller, cover);
}

function getCoverRenderer(cover) {
  return coverRenderers[cover.__brushOption.brushType];
} // return target panel or `true` (means global panel)


function getPanelByPoint(controller, e, localCursorPoint) {
  var panels = controller._panels;

  if (!panels) {
    return true; // Global panel
  }

  var panel;
  var transform = controller._transform;
  each(panels, function (pn) {
    pn.isTargetByCursor(e, localCursorPoint, transform) && (panel = pn);
  });
  return panel;
} // Return a panel or true


function getPanelByCover(controller, cover) {
  var panels = controller._panels;

  if (!panels) {
    return true; // Global panel
  }

  var panelId = cover.__brushOption.panelId; // User may give cover without coord sys info,
  // which is then treated as global panel.

  return panelId != null ? panels[panelId] : true;
}

function clearCovers(controller) {
  var covers = controller._covers;
  var originalLength = covers.length;
  each(covers, function (cover) {
    controller.group.remove(cover);
  }, controller);
  covers.length = 0;
  return !!originalLength;
}

function trigger(controller, opt) {
  var areas = map(controller._covers, function (cover) {
    var brushOption = cover.__brushOption;
    var range = zrUtil.clone(brushOption.range);
    return {
      brushType: brushOption.brushType,
      panelId: brushOption.panelId,
      range: range
    };
  });
  controller.trigger('brush', areas, {
    isEnd: !!opt.isEnd,
    removeOnClick: !!opt.removeOnClick
  });
}

function shouldShowCover(controller) {
  var track = controller._track;

  if (!track.length) {
    return false;
  }

  var p2 = track[track.length - 1];
  var p1 = track[0];
  var dx = p2[0] - p1[0];
  var dy = p2[1] - p1[1];
  var dist = mathPow(dx * dx + dy * dy, 0.5);
  return dist > UNSELECT_THRESHOLD;
}

function getTrackEnds(track) {
  var tail = track.length - 1;
  tail < 0 && (tail = 0);
  return [track[0], track[tail]];
}

function createBaseRectCover(doDrift, controller, brushOption, edgeNames) {
  var cover = new graphic.Group();
  cover.add(new graphic.Rect({
    name: 'main',
    style: makeStyle(brushOption),
    silent: true,
    draggable: true,
    cursor: 'move',
    drift: curry(doDrift, controller, cover, 'nswe'),
    ondragend: curry(trigger, controller, {
      isEnd: true
    })
  }));
  each(edgeNames, function (name) {
    cover.add(new graphic.Rect({
      name: name,
      style: {
        opacity: 0
      },
      draggable: true,
      silent: true,
      invisible: true,
      drift: curry(doDrift, controller, cover, name),
      ondragend: curry(trigger, controller, {
        isEnd: true
      })
    }));
  });
  return cover;
}

function updateBaseRect(controller, cover, localRange, brushOption) {
  var lineWidth = brushOption.brushStyle.lineWidth || 0;
  var handleSize = mathMax(lineWidth, MIN_RESIZE_LINE_WIDTH);
  var x = localRange[0][0];
  var y = localRange[1][0];
  var xa = x - lineWidth / 2;
  var ya = y - lineWidth / 2;
  var x2 = localRange[0][1];
  var y2 = localRange[1][1];
  var x2a = x2 - handleSize + lineWidth / 2;
  var y2a = y2 - handleSize + lineWidth / 2;
  var width = x2 - x;
  var height = y2 - y;
  var widtha = width + lineWidth;
  var heighta = height + lineWidth;
  updateRectShape(controller, cover, 'main', x, y, width, height);

  if (brushOption.transformable) {
    updateRectShape(controller, cover, 'w', xa, ya, handleSize, heighta);
    updateRectShape(controller, cover, 'e', x2a, ya, handleSize, heighta);
    updateRectShape(controller, cover, 'n', xa, ya, widtha, handleSize);
    updateRectShape(controller, cover, 's', xa, y2a, widtha, handleSize);
    updateRectShape(controller, cover, 'nw', xa, ya, handleSize, handleSize);
    updateRectShape(controller, cover, 'ne', x2a, ya, handleSize, handleSize);
    updateRectShape(controller, cover, 'sw', xa, y2a, handleSize, handleSize);
    updateRectShape(controller, cover, 'se', x2a, y2a, handleSize, handleSize);
  }
}

function updateCommon(controller, cover) {
  var brushOption = cover.__brushOption;
  var transformable = brushOption.transformable;
  var mainEl = cover.childAt(0);
  mainEl.useStyle(makeStyle(brushOption));
  mainEl.attr({
    silent: !transformable,
    cursor: transformable ? 'move' : 'default'
  });
  each(['w', 'e', 'n', 's', 'se', 'sw', 'ne', 'nw'], function (name) {
    var el = cover.childOfName(name);
    var globalDir = getGlobalDirection(controller, name);
    el && el.attr({
      silent: !transformable,
      invisible: !transformable,
      cursor: transformable ? CURSOR_MAP[globalDir] + '-resize' : null
    });
  });
}

function updateRectShape(controller, cover, name, x, y, w, h) {
  var el = cover.childOfName(name);
  el && el.setShape(pointsToRect(clipByPanel(controller, cover, [[x, y], [x + w, y + h]])));
}

function makeStyle(brushOption) {
  return zrUtil.defaults({
    strokeNoScale: true
  }, brushOption.brushStyle);
}

function formatRectRange(x, y, x2, y2) {
  var min = [mathMin(x, x2), mathMin(y, y2)];
  var max = [mathMax(x, x2), mathMax(y, y2)];
  return [[min[0], max[0]], // x range
  [min[1], max[1]] // y range
  ];
}

function getTransform(controller) {
  return graphic.getTransform(controller.group);
}

function getGlobalDirection(controller, localDirection) {
  if (localDirection.length > 1) {
    localDirection = localDirection.split('');
    var globalDir = [getGlobalDirection(controller, localDirection[0]), getGlobalDirection(controller, localDirection[1])];
    (globalDir[0] === 'e' || globalDir[0] === 'w') && globalDir.reverse();
    return globalDir.join('');
  } else {
    var map = {
      w: 'left',
      e: 'right',
      n: 'top',
      s: 'bottom'
    };
    var inverseMap = {
      left: 'w',
      right: 'e',
      top: 'n',
      bottom: 's'
    };
    var globalDir = graphic.transformDirection(map[localDirection], getTransform(controller));
    return inverseMap[globalDir];
  }
}

function driftRect(toRectRange, fromRectRange, controller, cover, name, dx, dy, e) {
  var brushOption = cover.__brushOption;
  var rectRange = toRectRange(brushOption.range);
  var localDelta = toLocalDelta(controller, dx, dy);
  each(name.split(''), function (namePart) {
    var ind = DIRECTION_MAP[namePart];
    rectRange[ind[0]][ind[1]] += localDelta[ind[0]];
  });
  brushOption.range = fromRectRange(formatRectRange(rectRange[0][0], rectRange[1][0], rectRange[0][1], rectRange[1][1]));
  updateCoverAfterCreation(controller, cover);
  trigger(controller, {
    isEnd: false
  });
}

function driftPolygon(controller, cover, dx, dy, e) {
  var range = cover.__brushOption.range;
  var localDelta = toLocalDelta(controller, dx, dy);
  each(range, function (point) {
    point[0] += localDelta[0];
    point[1] += localDelta[1];
  });
  updateCoverAfterCreation(controller, cover);
  trigger(controller, {
    isEnd: false
  });
}

function toLocalDelta(controller, dx, dy) {
  var thisGroup = controller.group;
  var localD = thisGroup.transformCoordToLocal(dx, dy);
  var localZero = thisGroup.transformCoordToLocal(0, 0);
  return [localD[0] - localZero[0], localD[1] - localZero[1]];
}

function clipByPanel(controller, cover, data) {
  var panel = getPanelByCover(controller, cover);
  return panel && panel !== true ? panel.clipPath(data, controller._transform) : zrUtil.clone(data);
}

function pointsToRect(points) {
  var xmin = mathMin(points[0][0], points[1][0]);
  var ymin = mathMin(points[0][1], points[1][1]);
  var xmax = mathMax(points[0][0], points[1][0]);
  var ymax = mathMax(points[0][1], points[1][1]);
  return {
    x: xmin,
    y: ymin,
    width: xmax - xmin,
    height: ymax - ymin
  };
}

function resetCursor(controller, e, localCursorPoint) {
  // Check active
  if (!controller._brushType) {
    return;
  }

  var zr = controller._zr;
  var covers = controller._covers;
  var currPanel = getPanelByPoint(controller, e, localCursorPoint); // Check whether in covers.

  if (!controller._dragging) {
    for (var i = 0; i < covers.length; i++) {
      var brushOption = covers[i].__brushOption;

      if (currPanel && (currPanel === true || brushOption.panelId === currPanel.panelId) && coverRenderers[brushOption.brushType].contain(covers[i], localCursorPoint[0], localCursorPoint[1])) {
        // Use cursor style set on cover.
        return;
      }
    }
  }

  currPanel && zr.setCursorStyle('crosshair');
}

function preventDefault(e) {
  var rawE = e.event;
  rawE.preventDefault && rawE.preventDefault();
}

function mainShapeContain(cover, x, y) {
  return cover.childOfName('main').contain(x, y);
}

function updateCoverByMouse(controller, e, localCursorPoint, isEnd) {
  var creatingCover = controller._creatingCover;
  var panel = controller._creatingPanel;
  var thisBrushOption = controller._brushOption;
  var eventParams;

  controller._track.push(localCursorPoint.slice());

  if (shouldShowCover(controller) || creatingCover) {
    if (panel && !creatingCover) {
      thisBrushOption.brushMode === 'single' && clearCovers(controller);
      var brushOption = zrUtil.clone(thisBrushOption);
      brushOption.brushType = determineBrushType(brushOption.brushType, panel);
      brushOption.panelId = panel === true ? null : panel.panelId;
      creatingCover = controller._creatingCover = createCover(controller, brushOption);

      controller._covers.push(creatingCover);
    }

    if (creatingCover) {
      var coverRenderer = coverRenderers[determineBrushType(controller._brushType, panel)];
      var coverBrushOption = creatingCover.__brushOption;
      coverBrushOption.range = coverRenderer.getCreatingRange(clipByPanel(controller, creatingCover, controller._track));

      if (isEnd) {
        endCreating(controller, creatingCover);
        coverRenderer.updateCommon(controller, creatingCover);
      }

      updateCoverShape(controller, creatingCover);
      eventParams = {
        isEnd: isEnd
      };
    }
  } else if (isEnd && thisBrushOption.brushMode === 'single' && thisBrushOption.removeOnClick) {
    // Help user to remove covers easily, only by a tiny drag, in 'single' mode.
    // But a single click do not clear covers, because user may have casual
    // clicks (for example, click on other component and do not expect covers
    // disappear).
    // Only some cover removed, trigger action, but not every click trigger action.
    if (getPanelByPoint(controller, e, localCursorPoint) && clearCovers(controller)) {
      eventParams = {
        isEnd: isEnd,
        removeOnClick: true
      };
    }
  }

  return eventParams;
}

function determineBrushType(brushType, panel) {
  if (brushType === 'auto') {
    return panel.defaultBrushType;
  }

  return brushType;
}

var mouseHandlers = {
  mousedown: function (e) {
    if (this._dragging) {
      // In case some browser do not support globalOut,
      // and release mose out side the browser.
      handleDragEnd.call(this, e);
    } else if (!e.target || !e.target.draggable) {
      preventDefault(e);
      var localCursorPoint = this.group.transformCoordToLocal(e.offsetX, e.offsetY);
      this._creatingCover = null;
      var panel = this._creatingPanel = getPanelByPoint(this, e, localCursorPoint);

      if (panel) {
        this._dragging = true;
        this._track = [localCursorPoint.slice()];
      }
    }
  },
  mousemove: function (e) {
    var localCursorPoint = this.group.transformCoordToLocal(e.offsetX, e.offsetY);
    resetCursor(this, e, localCursorPoint);

    if (this._dragging) {
      preventDefault(e);
      var eventParams = updateCoverByMouse(this, e, localCursorPoint, false);
      eventParams && trigger(this, eventParams);
    }
  },
  mouseup: handleDragEnd //,
  // FIXME
  // in tooltip, globalout should not be triggered.
  // globalout: handleDragEnd

};

function handleDragEnd(e) {
  if (this._dragging) {
    preventDefault(e);
    var localCursorPoint = this.group.transformCoordToLocal(e.offsetX, e.offsetY);
    var eventParams = updateCoverByMouse(this, e, localCursorPoint, true);
    this._dragging = false;
    this._track = [];
    this._creatingCover = null; // trigger event shoule be at final, after procedure will be nested.

    eventParams && trigger(this, eventParams);
  }
}
/**
 * key: brushType
 * @type {Object}
 */


var coverRenderers = {
  lineX: getLineRenderer(0),
  lineY: getLineRenderer(1),
  rect: {
    createCover: function (controller, brushOption) {
      return createBaseRectCover(curry(driftRect, function (range) {
        return range;
      }, function (range) {
        return range;
      }), controller, brushOption, ['w', 'e', 'n', 's', 'se', 'sw', 'ne', 'nw']);
    },
    getCreatingRange: function (localTrack) {
      var ends = getTrackEnds(localTrack);
      return formatRectRange(ends[1][0], ends[1][1], ends[0][0], ends[0][1]);
    },
    updateCoverShape: function (controller, cover, localRange, brushOption) {
      updateBaseRect(controller, cover, localRange, brushOption);
    },
    updateCommon: updateCommon,
    contain: mainShapeContain
  },
  polygon: {
    createCover: function (controller, brushOption) {
      var cover = new graphic.Group(); // Do not use graphic.Polygon because graphic.Polyline do not close the
      // border of the shape when drawing, which is a better experience for user.

      cover.add(new graphic.Polyline({
        name: 'main',
        style: makeStyle(brushOption),
        silent: true
      }));
      return cover;
    },
    getCreatingRange: function (localTrack) {
      return localTrack;
    },
    endCreating: function (controller, cover) {
      cover.remove(cover.childAt(0)); // Use graphic.Polygon close the shape.

      cover.add(new graphic.Polygon({
        name: 'main',
        draggable: true,
        drift: curry(driftPolygon, controller, cover),
        ondragend: curry(trigger, controller, {
          isEnd: true
        })
      }));
    },
    updateCoverShape: function (controller, cover, localRange, brushOption) {
      cover.childAt(0).setShape({
        points: clipByPanel(controller, cover, localRange)
      });
    },
    updateCommon: updateCommon,
    contain: mainShapeContain
  }
};

function getLineRenderer(xyIndex) {
  return {
    createCover: function (controller, brushOption) {
      return createBaseRectCover(curry(driftRect, function (range) {
        var rectRange = [range, [0, 100]];
        xyIndex && rectRange.reverse();
        return rectRange;
      }, function (rectRange) {
        return rectRange[xyIndex];
      }), controller, brushOption, [['w', 'e'], ['n', 's']][xyIndex]);
    },
    getCreatingRange: function (localTrack) {
      var ends = getTrackEnds(localTrack);
      var min = mathMin(ends[0][xyIndex], ends[1][xyIndex]);
      var max = mathMax(ends[0][xyIndex], ends[1][xyIndex]);
      return [min, max];
    },
    updateCoverShape: function (controller, cover, localRange, brushOption) {
      var otherExtent; // If brushWidth not specified, fit the panel.

      var panel = getPanelByCover(controller, cover);

      if (panel !== true && panel.getLinearBrushOtherExtent) {
        otherExtent = panel.getLinearBrushOtherExtent(xyIndex, controller._transform);
      } else {
        var zr = controller._zr;
        otherExtent = [0, [zr.getWidth(), zr.getHeight()][1 - xyIndex]];
      }

      var rectRange = [localRange, otherExtent];
      xyIndex && rectRange.reverse();
      updateBaseRect(controller, cover, rectRange, brushOption);
    },
    updateCommon: updateCommon,
    contain: mainShapeContain
  };
}

var _default = BrushController;
module.exports = _default;