bd028579
 易尊强
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import env from './env.js';
import { buildTransformer } from './fourPointsTransform.js';
var EVENT_SAVED_PROP = '___zrEVENTSAVED';
var _calcOut = [];
export function transformLocalCoord(out, elFrom, elTarget, inX, inY) {
return transformCoordWithViewport(_calcOut, elFrom, inX, inY, true)
&& transformCoordWithViewport(out, elTarget, _calcOut[0], _calcOut[1]);
}
export function transformCoordWithViewport(out, el, inX, inY, inverse) {
if (el.getBoundingClientRect && env.domSupported && !isCanvasEl(el)) {
var saved = el[EVENT_SAVED_PROP] || (el[EVENT_SAVED_PROP] = {});
var markers = prepareCoordMarkers(el, saved);
var transformer = preparePointerTransformer(markers, saved, inverse);
if (transformer) {
transformer(out, inX, inY);
return true;
}
}
return false;
}
function prepareCoordMarkers(el, saved) {
var markers = saved.markers;
if (markers) {
return markers;
}
markers = saved.markers = [];
var propLR = ['left', 'right'];
var propTB = ['top', 'bottom'];
for (var i = 0; i < 4; i++) {
var marker = document.createElement('div');
var stl = marker.style;
var idxLR = i % 2;
var idxTB = (i >> 1) % 2;
stl.cssText = [
'position: absolute',
'visibility: hidden',
'padding: 0',
'margin: 0',
'border-width: 0',
'user-select: none',
'width:0',
'height:0',
propLR[idxLR] + ':0',
propTB[idxTB] + ':0',
propLR[1 - idxLR] + ':auto',
propTB[1 - idxTB] + ':auto',
''
].join('!important;');
el.appendChild(marker);
markers.push(marker);
}
return markers;
}
function preparePointerTransformer(markers, saved, inverse) {
var transformerName = inverse ? 'invTrans' : 'trans';
var transformer = saved[transformerName];
var oldSrcCoords = saved.srcCoords;
var srcCoords = [];
var destCoords = [];
var oldCoordTheSame = true;
for (var i = 0; i < 4; i++) {
var rect = markers[i].getBoundingClientRect();
var ii = 2 * i;
var x = rect.left;
var y = rect.top;
srcCoords.push(x, y);
oldCoordTheSame = oldCoordTheSame && oldSrcCoords && x === oldSrcCoords[ii] && y === oldSrcCoords[ii + 1];
destCoords.push(markers[i].offsetLeft, markers[i].offsetTop);
}
return (oldCoordTheSame && transformer)
? transformer
: (saved.srcCoords = srcCoords,
saved[transformerName] = inverse
? buildTransformer(destCoords, srcCoords)
: buildTransformer(srcCoords, destCoords));
}
export function isCanvasEl(el) {
return el.nodeName.toUpperCase() === 'CANVAS';
}
var replaceReg = /([&<>"'])/g;
var replaceMap = {
'&': '&',
'<': '<',
'>': '>',
'"': '"',
'\'': '''
};
export function encodeHTML(source) {
return source == null
? ''
: (source + '').replace(replaceReg, function (str, c) {
return replaceMap[c];
});
}
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