0a5f6a8047
- Go backend (server/)
- Frontend (web/, server/static/)
- Database and deployment files
- Scripts and docs
Co-Authored-By: 狸花猫/Claude-Qwen3.6-Plus 🐾
122 lines
4.5 KiB
JavaScript
122 lines
4.5 KiB
JavaScript
/**
|
|
* @fileoverview 图片
|
|
* @author dxq613@gmail.com
|
|
*/
|
|
import { __assign, __extends } from "tslib";
|
|
import ShapeBase from './base';
|
|
import { isString, isNil } from '../util/util';
|
|
function isCanvas(dom) {
|
|
return dom instanceof HTMLElement && isString(dom.nodeName) && dom.nodeName.toUpperCase() === 'CANVAS';
|
|
}
|
|
var ImageShape = /** @class */ (function (_super) {
|
|
__extends(ImageShape, _super);
|
|
function ImageShape() {
|
|
return _super !== null && _super.apply(this, arguments) || this;
|
|
}
|
|
ImageShape.prototype.getDefaultAttrs = function () {
|
|
var attrs = _super.prototype.getDefaultAttrs.call(this);
|
|
return __assign(__assign({}, attrs), { x: 0, y: 0, width: 0, height: 0 });
|
|
};
|
|
ImageShape.prototype.initAttrs = function (attrs) {
|
|
this._setImage(attrs.img);
|
|
};
|
|
// image 不计算 stroke
|
|
ImageShape.prototype.isStroke = function () {
|
|
return false;
|
|
};
|
|
// 仅仅使用包围盒检测来进行拾取
|
|
// 所以不需要复写 isInStrokeOrPath 的方法
|
|
ImageShape.prototype.isOnlyHitBox = function () {
|
|
return true;
|
|
};
|
|
ImageShape.prototype._afterLoading = function () {
|
|
if (this.get('toDraw') === true) {
|
|
var canvas = this.get('canvas');
|
|
if (canvas) {
|
|
// 这段应该改成局部渲染
|
|
canvas.draw();
|
|
}
|
|
else {
|
|
// 这种方式如果发生遮挡会出现问题
|
|
this.createPath(this.get('context'));
|
|
}
|
|
}
|
|
};
|
|
ImageShape.prototype._setImage = function (img) {
|
|
var _this = this;
|
|
var attrs = this.attrs;
|
|
if (isString(img)) {
|
|
var image_1 = new Image();
|
|
image_1.onload = function () {
|
|
// 图片未加载完，则已经被销毁
|
|
if (_this.destroyed) {
|
|
return false;
|
|
}
|
|
// 缓存原始地址，可以做对比，防止重复加载图片
|
|
// 如果考虑到在加载过程中可能替换 img 属性，则情况更加复杂
|
|
// this.set('imgSrc', img);
|
|
// 这里会循环调用 _setImage 方法，但不会再走这个分支
|
|
_this.attr('img', image_1);
|
|
_this.set('loading', false);
|
|
_this._afterLoading();
|
|
var callback = _this.get('callback');
|
|
if (callback) {
|
|
callback.call(_this);
|
|
}
|
|
};
|
|
// 设置跨域
|
|
image_1.crossOrigin = 'Anonymous';
|
|
image_1.src = img;
|
|
// loading 过程中不绘制
|
|
this.set('loading', true);
|
|
}
|
|
else if (img instanceof Image) {
|
|
// 如果是一个 image 对象，则设置宽高
|
|
if (!attrs.width) {
|
|
attrs.width = img.width;
|
|
}
|
|
if (!attrs.height) {
|
|
attrs.height = img.height;
|
|
}
|
|
}
|
|
else if (isCanvas(img)) {
|
|
// 如果设置了 canvas 对象
|
|
if (!attrs.width) {
|
|
attrs.width = Number(img.getAttribute('width'));
|
|
}
|
|
if (!attrs.height) {
|
|
attrs.height, Number(img.getAttribute('height'));
|
|
}
|
|
}
|
|
};
|
|
ImageShape.prototype.onAttrChange = function (name, value, originValue) {
|
|
_super.prototype.onAttrChange.call(this, name, value, originValue);
|
|
// 如果加载的已经是当前图片，则不再处理
|
|
if (name === 'img') {
|
|
// 可以加缓冲，&& this.get('imgSrc') !== value
|
|
this._setImage(value);
|
|
}
|
|
};
|
|
ImageShape.prototype.createPath = function (context) {
|
|
// 正在加载则不绘制
|
|
if (this.get('loading')) {
|
|
this.set('toDraw', true); // 加载完成后绘制
|
|
this.set('context', context);
|
|
return;
|
|
}
|
|
var attrs = this.attr();
|
|
var x = attrs.x, y = attrs.y, width = attrs.width, height = attrs.height, sx = attrs.sx, sy = attrs.sy, swidth = attrs.swidth, sheight = attrs.sheight;
|
|
var img = attrs.img;
|
|
if (img instanceof Image || isCanvas(img)) {
|
|
if (!isNil(sx) && !isNil(sy) && !isNil(swidth) && !isNil(sheight)) {
|
|
context.drawImage(img, sx, sy, swidth, sheight, x, y, width, height);
|
|
}
|
|
else {
|
|
context.drawImage(img, x, y, width, height);
|
|
}
|
|
}
|
|
};
|
|
return ImageShape;
|
|
}(ShapeBase));
|
|
export default ImageShape;
|
|
//# sourceMappingURL=image.js.map
|