76 lines
1.9 KiB
JavaScript
76 lines
1.9 KiB
JavaScript
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import {createTransform, createBoundingRect} from './utils/parser';
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class TransformHandle {
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constructor(painter) {
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this.$painter = painter;
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this.parentLevel = painter.getParentLevel();
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this.rect = { x: 0, y: 0, width: 1600, height: 800 };
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this.transform = [createTransform({ scaleRate: 1, offsetX: 0, offsetY: 0 })];
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}
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checkVisible(view, rect) {
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// return createBoundingRect(view).intersect(rect);
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return createBoundingRect(view).intersect(this.rect);
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}
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revisibleView(view) {
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if (this.checkVisible(view)) {
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view.show();
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} else {
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view.hide();
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}
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// view.dirty();
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}
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// 视图进行缩放/平移
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transformView(view) {
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if (view) {
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for (let i = 0; i < this.transform.length; i++) {
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view.transform = this.transform[i];
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view.decomposeTransform();
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if (this.checkVisible(view)) { view.show(); return; } else { view.hide(); }
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}
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view.dirty();
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}
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}
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// 处理所有视图缩放/平移
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transformAll() {
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this.traverse(this.transformView, this);
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}
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// 重新计算显示图形
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revisibleAll() {
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this.traverse(this.revisibleView, this);
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}
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// 更新偏移量
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updateTransform(opts) {
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this.transform = [];
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opts.forEach(item => {
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this.transform.push(createTransform(item));
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});
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this.transformAll();
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}
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// 更新画布尺寸
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updateZrSize(opts) {
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this.rect = { x: 0, y: 0, width: opts.width, height: opts.height };
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this.revisibleAll();
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}
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// 遍历group执行回调
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traverse(cb, context) {
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this.parentLevel.eachChild(level => {
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level.eachChild((view) => {
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cb.call(context, view);
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}, context);
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}, context);
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}
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}
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export default TransformHandle;
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