59 lines
1.5 KiB
Java
59 lines
1.5 KiB
Java
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var G = require('../../renderer');
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var Util = require('../../util');
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var mergeBBox = require('./merge-bbox');
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function applyMatrix(point, matrix, tag) {
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if (tag === void 0) {
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tag = 1;
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}
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var vector = [point.x, point.y, tag];
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Util.vec3.transformMat3(vector, vector, matrix);
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return {
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x: vector[0],
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y: vector[1]
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};
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}
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function getTitleBBox(title) {
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var bbox = title.getBBox();
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var leftTop = {
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x: bbox.minX,
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y: bbox.minY
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};
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var rightBottom = {
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x: bbox.maxX,
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y: bbox.maxY
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};
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var matrix = title.attr('matrix');
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leftTop = applyMatrix(leftTop, matrix);
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rightBottom = applyMatrix(rightBottom, matrix);
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return {
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minX: leftTop.x,
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minY: leftTop.y,
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maxX: rightBottom.x,
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maxY: rightBottom.y
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};
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}
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module.exports = function BBoxOfBackPlot(backPlot, defaultBBox) {
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var bbox = defaultBBox;
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Util.each(backPlot.get('children'), function (group) {
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// 这段代码假设了子元素是 axis，同时 title 超出长度，
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// 这种临时代码需要在 4.0 中修复掉
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if (group instanceof G.Group) {
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Util.each(group.get('children'), function (element) {
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if (element instanceof G.Group && element.get('children').length || element instanceof G.Path) {
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bbox = mergeBBox(bbox, element.getBBox());
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} else if (element instanceof G.Text) {
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// title
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var elementBBox = getTitleBBox(element);
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bbox = mergeBBox(bbox, elementBBox);
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}
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});
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}
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});
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return bbox;
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};
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