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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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/**
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* AUTO-GENERATED FILE. DO NOT MODIFY.
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*/
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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// FIXME emphasis label position is not same with normal label position
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import { parsePercent } from '../../util/number.js';
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import { Point } from '../../util/graphic.js';
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import { each, isNumber } from 'zrender/lib/core/util.js';
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import { limitTurnAngle, limitSurfaceAngle } from '../../label/labelGuideHelper.js';
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import { shiftLayoutOnY } from '../../label/labelLayoutHelper.js';
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var RADIAN = Math.PI / 180;
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function adjustSingleSide(list, cx, cy, r, dir, viewWidth, viewHeight, viewLeft, viewTop, farthestX) {
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if (list.length < 2) {
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return;
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}
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;
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function recalculateXOnSemiToAlignOnEllipseCurve(semi) {
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var rB = semi.rB;
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var rB2 = rB * rB;
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for (var i = 0; i < semi.list.length; i++) {
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var item = semi.list[i];
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var dy = Math.abs(item.label.y - cy);
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// horizontal r is always same with original r because x is not changed.
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var rA = r + item.len;
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var rA2 = rA * rA;
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// Use ellipse implicit function to calculate x
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var dx = Math.sqrt(Math.abs((1 - dy * dy / rB2) * rA2));
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var newX = cx + (dx + item.len2) * dir;
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var deltaX = newX - item.label.x;
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var newTargetWidth = item.targetTextWidth - deltaX * dir;
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// text x is changed, so need to recalculate width.
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constrainTextWidth(item, newTargetWidth, true);
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item.label.x = newX;
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}
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}
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// Adjust X based on the shifted y. Make tight labels aligned on an ellipse curve.
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function recalculateX(items) {
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// Extremes of
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var topSemi = {
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list: [],
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maxY: 0
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};
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var bottomSemi = {
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list: [],
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maxY: 0
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};
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for (var i = 0; i < items.length; i++) {
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if (items[i].labelAlignTo !== 'none') {
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continue;
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}
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var item = items[i];
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var semi = item.label.y > cy ? bottomSemi : topSemi;
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var dy = Math.abs(item.label.y - cy);
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if (dy >= semi.maxY) {
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var dx = item.label.x - cx - item.len2 * dir;
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// horizontal r is always same with original r because x is not changed.
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var rA = r + item.len;
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// Canculate rB based on the topest / bottemest label.
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var rB = Math.abs(dx) < rA ? Math.sqrt(dy * dy / (1 - dx * dx / rA / rA)) : rA;
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semi.rB = rB;
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semi.maxY = dy;
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}
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semi.list.push(item);
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}
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recalculateXOnSemiToAlignOnEllipseCurve(topSemi);
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recalculateXOnSemiToAlignOnEllipseCurve(bottomSemi);
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}
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var len = list.length;
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for (var i = 0; i < len; i++) {
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if (list[i].position === 'outer' && list[i].labelAlignTo === 'labelLine') {
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var dx = list[i].label.x - farthestX;
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list[i].linePoints[1][0] += dx;
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list[i].label.x = farthestX;
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}
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}
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if (shiftLayoutOnY(list, viewTop, viewTop + viewHeight)) {
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recalculateX(list);
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}
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}
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function avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight, viewLeft, viewTop) {
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var leftList = [];
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var rightList = [];
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var leftmostX = Number.MAX_VALUE;
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var rightmostX = -Number.MAX_VALUE;
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for (var i = 0; i < labelLayoutList.length; i++) {
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var label = labelLayoutList[i].label;
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if (isPositionCenter(labelLayoutList[i])) {
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continue;
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}
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if (label.x < cx) {
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leftmostX = Math.min(leftmostX, label.x);
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leftList.push(labelLayoutList[i]);
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} else {
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rightmostX = Math.max(rightmostX, label.x);
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rightList.push(labelLayoutList[i]);
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}
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}
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for (var i = 0; i < labelLayoutList.length; i++) {
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var layout = labelLayoutList[i];
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if (!isPositionCenter(layout) && layout.linePoints) {
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if (layout.labelStyleWidth != null) {
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continue;
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}
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var label = layout.label;
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var linePoints = layout.linePoints;
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var targetTextWidth = void 0;
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if (layout.labelAlignTo === 'edge') {
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if (label.x < cx) {
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targetTextWidth = linePoints[2][0] - layout.labelDistance - viewLeft - layout.edgeDistance;
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} else {
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targetTextWidth = viewLeft + viewWidth - layout.edgeDistance - linePoints[2][0] - layout.labelDistance;
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}
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} else if (layout.labelAlignTo === 'labelLine') {
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if (label.x < cx) {
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targetTextWidth = leftmostX - viewLeft - layout.bleedMargin;
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} else {
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targetTextWidth = viewLeft + viewWidth - rightmostX - layout.bleedMargin;
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}
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} else {
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if (label.x < cx) {
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targetTextWidth = label.x - viewLeft - layout.bleedMargin;
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} else {
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targetTextWidth = viewLeft + viewWidth - label.x - layout.bleedMargin;
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}
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}
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layout.targetTextWidth = targetTextWidth;
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constrainTextWidth(layout, targetTextWidth);
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}
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}
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adjustSingleSide(rightList, cx, cy, r, 1, viewWidth, viewHeight, viewLeft, viewTop, rightmostX);
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adjustSingleSide(leftList, cx, cy, r, -1, viewWidth, viewHeight, viewLeft, viewTop, leftmostX);
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for (var i = 0; i < labelLayoutList.length; i++) {
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var layout = labelLayoutList[i];
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if (!isPositionCenter(layout) && layout.linePoints) {
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var label = layout.label;
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var linePoints = layout.linePoints;
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var isAlignToEdge = layout.labelAlignTo === 'edge';
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var padding = label.style.padding;
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var paddingH = padding ? padding[1] + padding[3] : 0;
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// textRect.width already contains paddingH if bgColor is set
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var extraPaddingH = label.style.backgroundColor ? 0 : paddingH;
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var realTextWidth = layout.rect.width + extraPaddingH;
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var dist = linePoints[1][0] - linePoints[2][0];
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if (isAlignToEdge) {
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if (label.x < cx) {
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linePoints[2][0] = viewLeft + layout.edgeDistance + realTextWidth + layout.labelDistance;
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} else {
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linePoints[2][0] = viewLeft + viewWidth - layout.edgeDistance - realTextWidth - layout.labelDistance;
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}
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} else {
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if (label.x < cx) {
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linePoints[2][0] = label.x + layout.labelDistance;
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} else {
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linePoints[2][0] = label.x - layout.labelDistance;
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}
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linePoints[1][0] = linePoints[2][0] + dist;
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}
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linePoints[1][1] = linePoints[2][1] = label.y;
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}
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}
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}
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/**
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* Set max width of each label, and then wrap each label to the max width.
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*
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* @param layout label layout
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* @param availableWidth max width for the label to display
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* @param forceRecalculate recaculate the text layout even if the current width
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* is smaller than `availableWidth`. This is useful when the text was previously
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* wrapped by calling `constrainTextWidth` but now `availableWidth` changed, in
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* which case, previous wrapping should be redo.
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*/
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function constrainTextWidth(layout, availableWidth, forceRecalculate) {
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if (forceRecalculate === void 0) {
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forceRecalculate = false;
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}
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if (layout.labelStyleWidth != null) {
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// User-defined style.width has the highest priority.
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return;
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}
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var label = layout.label;
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var style = label.style;
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var textRect = layout.rect;
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var bgColor = style.backgroundColor;
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var padding = style.padding;
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var paddingH = padding ? padding[1] + padding[3] : 0;
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var overflow = style.overflow;
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// textRect.width already contains paddingH if bgColor is set
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var oldOuterWidth = textRect.width + (bgColor ? 0 : paddingH);
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if (availableWidth < oldOuterWidth || forceRecalculate) {
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var oldHeight = textRect.height;
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if (overflow && overflow.match('break')) {
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// Temporarily set background to be null to calculate
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// the bounding box without background.
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label.setStyle('backgroundColor', null);
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// Set constraining width
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label.setStyle('width', availableWidth - paddingH);
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// This is the real bounding box of the text without padding.
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var innerRect = label.getBoundingRect();
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label.setStyle('width', Math.ceil(innerRect.width));
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label.setStyle('backgroundColor', bgColor);
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} else {
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var availableInnerWidth = availableWidth - paddingH;
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var newWidth = availableWidth < oldOuterWidth
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// Current text is too wide, use `availableWidth` as max width.
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? availableInnerWidth :
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// Current available width is enough, but the text may have
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// already been wrapped with a smaller available width.
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forceRecalculate ? availableInnerWidth > layout.unconstrainedWidth
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// Current available is larger than text width,
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// so don't constrain width (otherwise it may have
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// empty space in the background).
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? null
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// Current available is smaller than text width, so
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// use the current available width as constraining
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// width.
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: availableInnerWidth
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// Current available width is enough, so no need to
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// constrain.
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: null;
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label.setStyle('width', newWidth);
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}
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var newRect = label.getBoundingRect();
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textRect.width = newRect.width;
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var margin = (label.style.margin || 0) + 2.1;
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textRect.height = newRect.height + margin;
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textRect.y -= (textRect.height - oldHeight) / 2;
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}
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}
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function isPositionCenter(sectorShape) {
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// Not change x for center label
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return sectorShape.position === 'center';
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}
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export default function pieLabelLayout(seriesModel) {
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var data = seriesModel.getData();
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var labelLayoutList = [];
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var cx;
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var cy;
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var hasLabelRotate = false;
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var minShowLabelRadian = (seriesModel.get('minShowLabelAngle') || 0) * RADIAN;
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var viewRect = data.getLayout('viewRect');
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var r = data.getLayout('r');
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var viewWidth = viewRect.width;
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var viewLeft = viewRect.x;
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var viewTop = viewRect.y;
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var viewHeight = viewRect.height;
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function setNotShow(el) {
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el.ignore = true;
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}
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function isLabelShown(label) {
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if (!label.ignore) {
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return true;
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}
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for (var key in label.states) {
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if (label.states[key].ignore === false) {
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return true;
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}
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}
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return false;
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}
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data.each(function (idx) {
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var sector = data.getItemGraphicEl(idx);
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var sectorShape = sector.shape;
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var label = sector.getTextContent();
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var labelLine = sector.getTextGuideLine();
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var itemModel = data.getItemModel(idx);
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var labelModel = itemModel.getModel('label');
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// Use position in normal or emphasis
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var labelPosition = labelModel.get('position') || itemModel.get(['emphasis', 'label', 'position']);
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var labelDistance = labelModel.get('distanceToLabelLine');
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var labelAlignTo = labelModel.get('alignTo');
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var edgeDistance = parsePercent(labelModel.get('edgeDistance'), viewWidth);
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var bleedMargin = labelModel.get('bleedMargin');
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var labelLineModel = itemModel.getModel('labelLine');
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var labelLineLen = labelLineModel.get('length');
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labelLineLen = parsePercent(labelLineLen, viewWidth);
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var labelLineLen2 = labelLineModel.get('length2');
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labelLineLen2 = parsePercent(labelLineLen2, viewWidth);
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if (Math.abs(sectorShape.endAngle - sectorShape.startAngle) < minShowLabelRadian) {
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each(label.states, setNotShow);
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label.ignore = true;
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if (labelLine) {
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each(labelLine.states, setNotShow);
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labelLine.ignore = true;
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}
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return;
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}
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if (!isLabelShown(label)) {
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return;
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}
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var midAngle = (sectorShape.startAngle + sectorShape.endAngle) / 2;
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var nx = Math.cos(midAngle);
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var ny = Math.sin(midAngle);
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var textX;
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var textY;
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var linePoints;
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var textAlign;
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cx = sectorShape.cx;
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cy = sectorShape.cy;
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var isLabelInside = labelPosition === 'inside' || labelPosition === 'inner';
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if (labelPosition === 'center') {
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textX = sectorShape.cx;
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textY = sectorShape.cy;
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textAlign = 'center';
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} else {
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var x1 = (isLabelInside ? (sectorShape.r + sectorShape.r0) / 2 * nx : sectorShape.r * nx) + cx;
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var y1 = (isLabelInside ? (sectorShape.r + sectorShape.r0) / 2 * ny : sectorShape.r * ny) + cy;
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textX = x1 + nx * 3;
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textY = y1 + ny * 3;
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if (!isLabelInside) {
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// For roseType
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var x2 = x1 + nx * (labelLineLen + r - sectorShape.r);
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var y2 = y1 + ny * (labelLineLen + r - sectorShape.r);
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var x3 = x2 + (nx < 0 ? -1 : 1) * labelLineLen2;
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var y3 = y2;
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if (labelAlignTo === 'edge') {
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// Adjust textX because text align of edge is opposite
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textX = nx < 0 ? viewLeft + edgeDistance : viewLeft + viewWidth - edgeDistance;
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} else {
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textX = x3 + (nx < 0 ? -labelDistance : labelDistance);
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}
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textY = y3;
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linePoints = [[x1, y1], [x2, y2], [x3, y3]];
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}
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textAlign = isLabelInside ? 'center' : labelAlignTo === 'edge' ? nx > 0 ? 'right' : 'left' : nx > 0 ? 'left' : 'right';
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}
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var PI = Math.PI;
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var labelRotate = 0;
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var rotate = labelModel.get('rotate');
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if (isNumber(rotate)) {
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labelRotate = rotate * (PI / 180);
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} else if (labelPosition === 'center') {
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labelRotate = 0;
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} else if (rotate === 'radial' || rotate === true) {
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var radialAngle = nx < 0 ? -midAngle + PI : -midAngle;
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labelRotate = radialAngle;
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} else if (rotate === 'tangential' && labelPosition !== 'outside' && labelPosition !== 'outer') {
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var rad = Math.atan2(nx, ny);
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if (rad < 0) {
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rad = PI * 2 + rad;
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}
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var isDown = ny > 0;
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if (isDown) {
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rad = PI + rad;
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}
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labelRotate = rad - PI;
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}
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hasLabelRotate = !!labelRotate;
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label.x = textX;
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label.y = textY;
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label.rotation = labelRotate;
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label.setStyle({
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verticalAlign: 'middle'
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});
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// Not sectorShape the inside label
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if (!isLabelInside) {
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var textRect = label.getBoundingRect().clone();
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textRect.applyTransform(label.getComputedTransform());
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// Text has a default 1px stroke. Exclude this.
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var margin = (label.style.margin || 0) + 2.1;
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textRect.y -= margin / 2;
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textRect.height += margin;
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labelLayoutList.push({
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label: label,
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labelLine: labelLine,
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position: labelPosition,
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len: labelLineLen,
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len2: labelLineLen2,
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minTurnAngle: labelLineModel.get('minTurnAngle'),
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maxSurfaceAngle: labelLineModel.get('maxSurfaceAngle'),
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surfaceNormal: new Point(nx, ny),
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linePoints: linePoints,
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textAlign: textAlign,
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labelDistance: labelDistance,
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labelAlignTo: labelAlignTo,
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edgeDistance: edgeDistance,
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bleedMargin: bleedMargin,
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rect: textRect,
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unconstrainedWidth: textRect.width,
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labelStyleWidth: label.style.width
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});
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} else {
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label.setStyle({
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align: textAlign
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});
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var selectState = label.states.select;
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if (selectState) {
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selectState.x += label.x;
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selectState.y += label.y;
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}
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}
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sector.setTextConfig({
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inside: isLabelInside
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});
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});
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if (!hasLabelRotate && seriesModel.get('avoidLabelOverlap')) {
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avoidOverlap(labelLayoutList, cx, cy, r, viewWidth, viewHeight, viewLeft, viewTop);
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}
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for (var i = 0; i < labelLayoutList.length; i++) {
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var layout = labelLayoutList[i];
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var label = layout.label;
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var labelLine = layout.labelLine;
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var notShowLabel = isNaN(label.x) || isNaN(label.y);
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if (label) {
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label.setStyle({
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align: layout.textAlign
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});
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if (notShowLabel) {
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each(label.states, setNotShow);
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label.ignore = true;
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}
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var selectState = label.states.select;
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if (selectState) {
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selectState.x += label.x;
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selectState.y += label.y;
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}
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}
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if (labelLine) {
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var linePoints = layout.linePoints;
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if (notShowLabel || !linePoints) {
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each(labelLine.states, setNotShow);
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labelLine.ignore = true;
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} else {
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limitTurnAngle(linePoints, layout.minTurnAngle);
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limitSurfaceAngle(linePoints, layout.surfaceNormal, layout.maxSurfaceAngle);
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labelLine.setShape({
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points: linePoints
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});
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// Set the anchor to the midpoint of sector
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label.__hostTarget.textGuideLineConfig = {
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anchor: new Point(linePoints[0][0], linePoints[0][1])
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};
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}
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}
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}
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}
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