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+import { SColor, SLine, SPainter, SPoint, SRect } from "@persagy-web/draw";
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+import { SKeyCode, SMouseEvent, SUndoStack } from "@persagy-web/base";
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+import { SItemStatus } from "@persagy-web/big";;
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+import { SMathUtil } from "@persagy-web/big/lib/utils/SMathUtil";;
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+import {
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+ SGraphItem,
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+ SGraphPointListDelete,
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+ SGraphPointListInsert,
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+ SGraphPointListUpdate,
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+ SLineStyle
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+} from "@persagy-web/graph/lib";
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+
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+/**
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+ * 直线item
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+ *
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+ * */
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+
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+export class EditPolylineItem extends SGraphItem {
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+ /** X坐标最小值 */
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+ private minX = Number.MAX_SAFE_INTEGER;
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+ /** X坐标最大值 */
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+ private maxX = Number.MIN_SAFE_INTEGER;
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+ /** Y坐标最小值 */
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+ private minY = Number.MAX_SAFE_INTEGER;
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+ /** Y坐标最大值 */
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+ private maxY = Number.MIN_SAFE_INTEGER;
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+ /** 折点信息 */
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+ pointList: SPoint[] = [];
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+ /** 是否绘制完成 */
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+ _status: SItemStatus = SItemStatus.Normal;
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+ get status(): SItemStatus {
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+ return this._status;
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+ }
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+ set status(v: SItemStatus) {
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+ this._status = v;
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+ this.undoStack.clear();
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+ this.update();
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+ }
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+ /** 鼠标移动时的点 */
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+ private lastPoint: SPoint | null = null;
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+ /** 线条颜色 */
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+ _strokeColor: SColor = SColor.Black;
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+ get strokeColor(): SColor {
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+ return this._strokeColor;
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+ }
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+ set strokeColor(v: SColor) {
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+ this._strokeColor = v;
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+ this.update();
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+ }
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+ /** 填充色 */
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+ _fillColor: SColor = new SColor("#2196f3");
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+ get fillColor(): SColor {
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+ return this._fillColor;
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+ }
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+ set fillColor(v: SColor) {
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+ this._fillColor = v;
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+ this.update();
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+ }
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+ /** 边框样式 */
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+ _lineStyle: SLineStyle = SLineStyle.Solid;
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+ get lineStyle(): SLineStyle {
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+ return this._lineStyle;
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+ }
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+ set lineStyle(v: SLineStyle) {
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+ this._lineStyle = v;
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+ this.update();
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+ }
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+ /** 线条宽度 */
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+ _lineWidth: number = 1;
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+ get lineWidth(): number {
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+ return this._lineWidth;
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+ }
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+ set lineWidth(v: number) {
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+ this._lineWidth = v;
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+ this.update();
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+ }
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+ /** 是否垂直水平绘制 */
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+ private _verAndLeve: Boolean = false;
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+ get verAndLeve(): Boolean {
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+ return this._verAndLeve;
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+ }
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+ set verAndLeve(bool: Boolean) {
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+ this._verAndLeve = bool;
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+ this.update();
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+ }
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+ /** 全局灵敏度 */
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+ dis: number = 10;
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+ /** 灵敏度转换为场景长度 */
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+ private sceneDis: number = 10;
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+ /** 当前点索引 */
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+ private curIndex: number = -1;
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+ /** 当前点索引 */
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+ private curPoint: SPoint | null = null;
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+ /** undo/redo堆栈 */
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+ private undoStack: SUndoStack = new SUndoStack();
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+
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+ /**
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+ * 构造函数
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+ *
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+ * @param parent 父级
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+ * @param list 坐标集合
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+ * */
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+ constructor(parent: null | SGraphItem, list: SPoint[]);
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+
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+ /**
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+ * 构造函数
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+ *
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+ * @param parent 父级
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+ * @param list 第一个坐标
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+ * */
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+ constructor(parent: null | SGraphItem, list: SPoint);
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+
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+ /**
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+ * 构造函数
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+ *
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+ * @param parent 父级
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+ * @param list 第一个坐标|坐标集合
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+ * */
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+ constructor(parent: null | SGraphItem, list: SPoint | SPoint[]) {
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+ super(parent);
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+ if (list instanceof SPoint) {
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+ this.pointList.push(list);
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+ } else {
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+ this.pointList = list;
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+ }
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+ } // Constructor
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+
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+ /**
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+ * 添加点至数组中
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+ *
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+ * @param p 添加的点
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+ * @param index 添加到的索引
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+ * */
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+ private addPoint(p: SPoint, index?: number): void {
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+ if (index && this.canHandle(index)) {
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+ this.pointList.splice(index, 0, p);
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+ this.recordAction(SGraphPointListInsert, [
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+ this.pointList,
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+ p,
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+ index
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+ ]);
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+ } else {
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+ this.pointList.push(p);
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+ this.recordAction(SGraphPointListInsert, [this.pointList, p]);
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+ }
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+ this.update();
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+ } // Function addPoint()
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+
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+ /**
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+ * 是否可以添加点到数组中
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+ *
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+ * @param index 要添加到的索引
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+ * @return boolean 是否可添加
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+ * */
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+ private canHandle(index: number): boolean {
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+ return index >= 0 && index <= this.pointList.length;
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+ } // Function canHandle()
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+
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+ /**
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+ * 根据索引删除点
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+ *
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+ * @param index 删除点
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+ * */
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+ deletePoint(index: number): void {
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+ if (this.canHandle(index) && this.pointList.length > 2) {
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+ const p = new SPoint(
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+ this.pointList[this.curIndex].x,
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+ this.pointList[this.curIndex].y
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+ );
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+ this.pointList.splice(index, 1);
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+ this.recordAction(SGraphPointListDelete, [
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+ this.pointList,
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+ p,
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+ index
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+ ]);
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+ this.curIndex = -1;
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+ this.curPoint = null;
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+ this.update();
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+ }
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+ } // Function deletePoint
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+
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+ /**
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+ * 鼠标按下事件
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+ *
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+ * @param event 鼠标事件
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+ * @return boolean 是否处理事件
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+ * */
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+ onMouseDown(event: SMouseEvent): boolean {
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+ this.curIndex = -1;
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+ this.curPoint = null;
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+ if (event.shiftKey || this.verAndLeve) {
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+ event = this.compare(event);
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+ }
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+ if (event.buttons == 1) {
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+ if (this.status == SItemStatus.Create) {
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+ this.addPoint(new SPoint(event.x, event.y));
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+ return true;
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+ } else if (this.status == SItemStatus.Edit) {
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+ // 查询鼠标最近的索引
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+ this.findNearestPoint(new SPoint(event.x, event.y));
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+ // 增加点
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+ if (this.curIndex < 0) {
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+ this.findAddPos(new SPoint(event.x, event.y));
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+ }
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+ // 删除点
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+ if (event.altKey && this.canHandle(this.curIndex)) {
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+ this.deletePoint(this.curIndex);
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+ }
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+ this.update();
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+ return true;
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+ } else {
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+ return super.onMouseDown(event);
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+ }
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+ }
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+ return super.onMouseDown(event);
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+ } // Function onMouseDown()
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+
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+ /**
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+ * 鼠标移动事件
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+ *
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+ * @param event 鼠标事件
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+ * @return boolean 是否处理事件
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+ * */
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+ onMouseMove(event: SMouseEvent): boolean {
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+ if (event.shiftKey || this.verAndLeve) {
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+ event = this.compare(event);
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+ }
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+ if (this.status == SItemStatus.Create) {
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+ if (this.lastPoint) {
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+ this.lastPoint.x = event.x;
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+ this.lastPoint.y = event.y;
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+ } else {
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+ this.lastPoint = new SPoint(event.x, event.y);
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+ }
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+ this.update();
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+ return true;
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+ } else if (this.status == SItemStatus.Edit) {
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+ if (event.buttons == 1) {
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+ if (this.canHandle(this.curIndex)) {
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+ this.pointList[this.curIndex].x = event.x;
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+ this.pointList[this.curIndex].y = event.y;
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+ }
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+ }
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+ this.update();
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+ return true;
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+ } else {
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+ return super.onMouseMove(event);
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+ }
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+ } // Function onMouseMove()
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+
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+ /**
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+ * 鼠标移动事件
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+ *
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+ * @param event 鼠标事件
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+ * @return boolean 是否处理事件
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+ * */
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+ onMouseUp(event: SMouseEvent): boolean {
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+ if (this.status == SItemStatus.Edit) {
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+ if (this.curIndex > -1) {
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+ const p = new SPoint(
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+ this.pointList[this.curIndex].x,
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+ this.pointList[this.curIndex].y
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+ );
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+ this.recordAction(SGraphPointListUpdate, [
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+ this.pointList,
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+ this.curPoint,
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+ p,
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+ this.curIndex
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+ ]);
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+ }
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+ } else if (this.status == SItemStatus.Normal) {
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+ this.moveToOrigin(this.x, this.y);
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+ return super.onMouseUp(event);
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+ }
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+ return true;
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+ } // Function onMouseUp()
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+
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+ /**
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+ * 鼠标双击事件
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+ *
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+ * @param event 事件参数
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+ * @return boolean
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+ */
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+ onDoubleClick(event: SMouseEvent): boolean {
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+ if (this.status == SItemStatus.Normal) {
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+ this.status = SItemStatus.Edit;
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+ this.grabItem(this);
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+ } else if (this.status == SItemStatus.Edit) {
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+ this.status = SItemStatus.Normal;
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+ this.releaseItem();
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+ } else if (this.status == SItemStatus.Create) {
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+ if (this.pointList.length > 1) {
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+ this.status = SItemStatus.Normal;
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+ this.releaseItem();
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+ this.$emit("finishCreated");
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+ }
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+ }
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+ this.$emit("onDoubleClick", event);
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+ return true;
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+ } // Function onDoubleClick()
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+
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+ /***
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+ * 键盘按键弹起事件
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+ *
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+ * @param event 事件参数
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+ */
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+ onKeyUp(event: KeyboardEvent): void {
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+ if (event.keyCode == SKeyCode.Enter) {
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+ if (this.pointList.length > 1) {
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+ if (this.status == SItemStatus.Create) {
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+ this.$emit("finishCreated");
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+ }
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+ this.status = SItemStatus.Normal;
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+ this.releaseItem();
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+ }
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+ }
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+ // delete删除点
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+ if (
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+ event.keyCode == SKeyCode.Delete &&
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+ this.status == SItemStatus.Edit
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+ ) {
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+ this.deletePoint(this.curIndex);
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+ }
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+ } // Function onKeyUp()
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+
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+ /**
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+ * 移动后处理所有坐标,并肩原点置为场景原点
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+ *
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+ * @param x x坐标
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+ * @param y y坐标
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+ * */
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+ moveToOrigin(x: number, y: number): void {
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+ super.moveToOrigin(x, y);
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+ this.pointList = this.pointList.map(t => {
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+ t.x = t.x + x;
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+ t.y = t.y + y;
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+ return t;
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+ });
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+ this.x = 0;
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+ this.y = 0;
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+ } // Function moveToOrigin()
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+
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+ /**
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+ * 获取点击点与点集中距离最近点
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+ *
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+ * @param p 鼠标点击点
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+ * */
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+ findNearestPoint(p: SPoint): void {
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+ let len = this.sceneDis;
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+ for (let i = 0; i < this.pointList.length; i++) {
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+ let dis = SMathUtil.pointDistance(
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+ p.x,
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+ p.y,
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+ this.pointList[i].x,
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+ this.pointList[i].y
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+ );
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+ if (dis < len) {
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+ len = dis;
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+ this.curIndex = i;
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+ this.curPoint = new SPoint(
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+ this.pointList[this.curIndex].x,
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+ this.pointList[this.curIndex].y
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+ );
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+ }
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+ }
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+ } // Function findNearestPoint()
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+
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+ /**
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+ * 计算增加点的位置
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+ *
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+ * @param p 鼠标点击点
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+ * */
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+ findAddPos(p: SPoint): void {
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+ let len = SMathUtil.pointToLine(
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+ p,
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+ new SLine(this.pointList[0], this.pointList[1])
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+ ),
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+ index = 0;
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+ if (this.pointList.length > 2) {
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+ for (let i = 1; i < this.pointList.length - 1; i++) {
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+ let dis = SMathUtil.pointToLine(
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+ p,
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+ new SLine(this.pointList[i], this.pointList[i + 1])
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+ );
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+ if (dis.MinDis < len.MinDis) {
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+ len = dis;
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+ index = i;
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+ }
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+ }
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+ }
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+ if (len.MinDis < this.sceneDis) {
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+ if (len.Point) {
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+ this.addPoint(len.Point, index + 1);
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+ }
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+ }
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+ } // Function findAddPos()
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+
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+ /**
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+ * shift垂直水平创建或编辑
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+ *
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+ * @param event 事件
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+ * */
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+ compare(event: SMouseEvent): SMouseEvent {
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+ if (this.pointList.length) {
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+ let last = new SPoint(event.x, event.y);
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+ if (this.status == SItemStatus.Create) {
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+ last = this.pointList[this.pointList.length - 1];
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+ } else if (this.status == SItemStatus.Edit) {
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+ if (this.curIndex > 1) {
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+ last = this.pointList[this.curIndex - 1];
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+ }
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+ }
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+ const dx = Math.abs(event.x - last.x);
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+ const dy = Math.abs(event.y - last.y);
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+ if (dy > dx) {
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+ event.x = last.x;
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+ } else {
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+ event.y = last.y;
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+ }
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+ }
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+ return event;
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+ } // Function compare()
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+
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+ /**
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+ * 记录相关动作并推入栈中
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+ *
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+ * @param SGraphCommand 相关命令类
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+ * @param any 对应传入参数
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+ */
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+ protected recordAction(SGraphCommand: any, any: any[]): void {
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+ // 记录相关命令并推入堆栈中
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+ const command = new SGraphCommand(this.scene, this, ...any);
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+ this.undoStack.push(command);
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+ } // Function recordAction()
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+
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+ /**
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+ * Item对象边界区域
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+ *
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+ * @return SRect 外接矩阵
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+ * */
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+ boundingRect(): SRect {
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+ if (this.pointList.length) {
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+ this.minX = this.pointList[0].x;
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+ this.maxX = this.pointList[0].x;
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+ this.minY = this.pointList[0].y;
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+ this.maxY = this.pointList[0].y;
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+ this.pointList.forEach(it => {
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+ let x = it.x,
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+ y = it.y;
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+ if (x < this.minX) {
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|
+ this.minX = x;
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+ }
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+ if (y < this.minY) {
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+ this.minY = y;
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+ }
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+ if (x > this.maxX) {
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+ this.maxX = x;
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+ }
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+ if (y > this.maxY) {
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+ this.maxY = y;
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+ }
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+ });
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+ }
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+ return new SRect(
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+ this.minX,
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+ this.minY,
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+ this.maxX - this.minX,
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+ this.maxY - this.minY
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|
|
+ );
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+ } // Function boundingRect()
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+
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+ /**
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|
+ * 判断点是否在区域内
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|
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+ *
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+ * @param x
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+ * @param y
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|
+ * @return true-是
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|
|
+ */
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|
|
+ contains(x: number, y: number): boolean {
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|
|
+ let p = new SPoint(x, y);
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|
|
+ for (let i = 1; i < this.pointList.length; i++) {
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|
|
+ let PTL = SMathUtil.pointToLine(
|
|
|
+ p,
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|
|
+ new SLine(
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|
+ this.pointList[i - 1].x,
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|
+ this.pointList[i - 1].y,
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|
+ this.pointList[i].x,
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|
+ this.pointList[i].y
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|
|
+ )
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|
|
+ );
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|
+ if (PTL.MinDis < this.sceneDis) {
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|
+ return true;
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|
|
+ }
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|
|
+ }
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|
|
+ return false;
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|
|
+ } // Function contains()
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+
|
|
|
+ /**
|
|
|
+ * 撤销操作
|
|
|
+ *
|
|
|
+ */
|
|
|
+ undo(): void {
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|
|
+ if (this._status != SItemStatus.Normal) {
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|
|
+ this.undoStack.undo();
|
|
|
+ }
|
|
|
+ } // Function undo()
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|
|
+
|
|
|
+ /**
|
|
|
+ * 重做操作
|
|
|
+ *
|
|
|
+ */
|
|
|
+ redo(): void {
|
|
|
+ if (this._status != SItemStatus.Normal) {
|
|
|
+ this.undoStack.redo();
|
|
|
+ }
|
|
|
+ } // Function redo()
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 取消操作执行
|
|
|
+ *
|
|
|
+ * */
|
|
|
+ cancelOperate(): void {
|
|
|
+ if (this.status == SItemStatus.Create) {
|
|
|
+ this.parent = null;
|
|
|
+ this.releaseItem();
|
|
|
+ } else if (this.status == SItemStatus.Edit) {
|
|
|
+ this.status = SItemStatus.Normal;
|
|
|
+ this.releaseItem();
|
|
|
+ }
|
|
|
+ } // Function cancelOperate()
|
|
|
+
|
|
|
+ /**
|
|
|
+ * 绘制基本图形
|
|
|
+ * */
|
|
|
+ drawBaseLine(painter: SPainter): void {
|
|
|
+ // 绘制基本图形
|
|
|
+ painter.pen.color = this.strokeColor;
|
|
|
+ if (this.lineStyle == SLineStyle.Dashed) {
|
|
|
+ painter.pen.lineDash = [
|
|
|
+ painter.toPx(this.lineWidth * 3),
|
|
|
+ painter.toPx(this.lineWidth * 7)
|
|
|
+ ];
|
|
|
+ } else if (this.lineStyle == SLineStyle.Dotted) {
|
|
|
+ painter.pen.lineDash = [
|
|
|
+ painter.toPx(this.lineWidth),
|
|
|
+ painter.toPx(this.lineWidth)
|
|
|
+ ];
|
|
|
+ }
|
|
|
+ painter.drawPolyline(this.pointList);
|
|
|
+ } // Function drawBaseLine()
|
|
|
+
|
|
|
+ /**
|
|
|
+ * Item绘制操作
|
|
|
+ *
|
|
|
+ * @param painter painter对象
|
|
|
+ */
|
|
|
+ onDraw(painter: SPainter): void {
|
|
|
+ // 缓存场景长度
|
|
|
+ this.sceneDis = painter.toPx(this.dis);
|
|
|
+ // 创建状态
|
|
|
+ painter.pen.lineWidth = painter.toPx(this.lineWidth);
|
|
|
+ if (this.status == SItemStatus.Create && this.lastPoint) {
|
|
|
+ // 绘制基本图形
|
|
|
+ this.drawBaseLine(painter);
|
|
|
+ painter.drawLine(
|
|
|
+ this.pointList[this.pointList.length - 1],
|
|
|
+ this.lastPoint
|
|
|
+ );
|
|
|
+ // 编辑状态
|
|
|
+ this.pointList.forEach((t, i): void => {
|
|
|
+ painter.brush.color = SColor.White;
|
|
|
+ if (i == this.curIndex) {
|
|
|
+ painter.brush.color = this.fillColor;
|
|
|
+ }
|
|
|
+ painter.drawCircle(t.x, t.y, painter.toPx(5));
|
|
|
+ });
|
|
|
+ } else if (this.status == SItemStatus.Edit) {
|
|
|
+ // 绘制基本图形
|
|
|
+ this.drawBaseLine(painter);
|
|
|
+ // 编辑状态
|
|
|
+ this.pointList.forEach((t, i): void => {
|
|
|
+ painter.brush.color = SColor.White;
|
|
|
+ if (i == this.curIndex) {
|
|
|
+ painter.brush.color = this.fillColor;
|
|
|
+ }
|
|
|
+ painter.drawCircle(t.x, t.y, painter.toPx(5));
|
|
|
+ });
|
|
|
+ } else {
|
|
|
+ // 查看状态
|
|
|
+ if (this.selected) {
|
|
|
+ painter.pen.lineWidth = painter.toPx(this.lineWidth * 2);
|
|
|
+ painter.shadow.shadowBlur = 10;
|
|
|
+ painter.shadow.shadowColor = new SColor(`#00000033`);
|
|
|
+ painter.shadow.shadowOffsetX = 5;
|
|
|
+ painter.shadow.shadowOffsetY = 5;
|
|
|
+ }
|
|
|
+ // 绘制基本图形
|
|
|
+ this.drawBaseLine(painter);
|
|
|
+ }
|
|
|
+ } // Function onDraw()
|
|
|
+} // Class SPolylineItem
|