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