import { SKeyCode, SMouseEvent, SUndoStack } from "@persagy-web/base/lib"; import { ItemOrder, SItemStatus } from "@persagy-web/big/lib"; import { SMathUtil } from "@persagy-web/big/lib/utils/SMathUtil"; import { SColor, SLine, SPainter, SPoint, SRect } from "@persagy-web/draw/lib"; import { SGraphItem, SGraphPointListDelete, SGraphPointListInsert, SGraphPointListUpdate, SGraphStyleItem, SLineStyle } from "@persagy-web/graph/lib"; /** * 折线编辑类 * * @author 郝建龙 */ export class CustomWall extends SGraphStyleItem { /** X 坐标最小值 */ private minX = Number.MAX_SAFE_INTEGER; /** X 坐标最大值 */ private maxX = Number.MIN_SAFE_INTEGER; /** Y 坐标最小值 */ private minY = Number.MAX_SAFE_INTEGER; /** Y 坐标最大值 */ private maxY = Number.MIN_SAFE_INTEGER; /** 折点信息 */ pointList: SPoint[] = []; /** 是否绘制完成 */ _status: SItemStatus = SItemStatus.Normal; get status(): SItemStatus { return this._status; } set status(v: SItemStatus) { this._status = v; this.undoStack.clear(); this.update(); } /** 鼠标移动时的点 */ private lastPoint: SPoint | null = null; /** 是否垂直水平绘制 */ private _verAndLeve: boolean = false; get verAndLeve(): boolean { return this._verAndLeve; } set verAndLeve(bool: boolean) { this._verAndLeve = bool; this.update(); } /** 全局灵敏度 */ dis: number = 10; /** 灵敏度转换为场景长度 */ private sceneDis: number = 10; /** 当前点索引 */ private curIndex: number = -1; /** 当前点 */ private curPoint: SPoint | null = null; /** undo / redo 堆栈 */ private undoStack: SUndoStack = new SUndoStack(); /** * 构造函数 * * @param parent 父级 * @param data 折线数据 */ constructor(parent: null | SGraphItem, data: SPoint[] | SPoint) { super(parent); if (data instanceof Array) { this.pointList = data; } else { this.pointList.push(new SPoint(data)); this.lastPoint = data; } this.fillColor = new SColor("#2196f3"); this.selectable = true; this.zOrder = ItemOrder.wallOrder } // Constructor /** * 添加点至数组中 * * @param p 添加的点 * @param index 添加到的索引 */ private addPoint(p: SPoint, index?: number): void { if (index && this.canHandle(index)) { this.pointList.splice(index, 0, p); this.recordAction(SGraphPointListInsert, [ this.pointList, p, index ]); } else { this.pointList.push(p); this.recordAction(SGraphPointListInsert, [this.pointList, p]); } this.update(); } /** * 是否可以添加点到数组中 * * @param index 要添加到的索引 * @return 是否可添加 */ private canHandle(index: number): boolean { return index >= 0 && index <= this.pointList.length; } /** * 根据索引删除点 * * @param index 删除点 */ deletePoint(index: number): void { if (this.canHandle(index) && this.pointList.length > 2) { const p = new SPoint( this.pointList[this.curIndex].x, this.pointList[this.curIndex].y ); this.pointList.splice(index, 1); this.recordAction(SGraphPointListDelete, [ this.pointList, p, index ]); this.curIndex = -1; this.curPoint = null; this.update(); } } /** * 鼠标按下事件 * * @param event 鼠标事件 * @return 是否处理事件 */ onMouseDown(event: SMouseEvent): boolean { this.curIndex = -1; this.curPoint = null; if (event.shiftKey || this.verAndLeve) { event = this.compare(event); } if (event.buttons == 1) { if (this.status == SItemStatus.Create) { this.addPoint(new SPoint(event.x, event.y)); return true; } else if (this.status == SItemStatus.Edit) { // 查询鼠标最近的索引 this.findNearestPoint(new SPoint(event.x, event.y)); // 增加点 if (this.curIndex < 0) { this.findAddPos(new SPoint(event.x, event.y)); } // 删除点 if (event.altKey && this.canHandle(this.curIndex)) { this.deletePoint(this.curIndex); } this.update(); return true; } else { return super.onMouseDown(event); } } return super.onMouseDown(event); } /** * 鼠标移动事件 * * @param event 鼠标事件 * @return 是否处理事件 */ onMouseMove(event: SMouseEvent): boolean { if (event.shiftKey || this.verAndLeve) { event = this.compare(event); } if (this.status == SItemStatus.Create) { if (this.lastPoint) { this.lastPoint.x = event.x; this.lastPoint.y = event.y; } else { this.lastPoint = new SPoint(event.x, event.y); } this.update(); return true; } else if (this.status == SItemStatus.Edit) { if (event.buttons == 1) { if (this.canHandle(this.curIndex)) { this.pointList[this.curIndex].x = event.x; this.pointList[this.curIndex].y = event.y; } } this.update(); return true; } else { return super.onMouseMove(event); } } /** * 鼠标移动事件 * * @param event 鼠标事件 * @return 是否处理事件 */ onMouseUp(event: SMouseEvent): boolean { if (this.status == SItemStatus.Edit) { if (this.curIndex > -1) { const p = new SPoint( this.pointList[this.curIndex].x, this.pointList[this.curIndex].y ); this.recordAction(SGraphPointListUpdate, [ this.pointList, this.curPoint, p, this.curIndex ]); } } else if (this.status == SItemStatus.Normal) { super.onMouseUp(event); return true; } return true; } /** * 鼠标双击事件 * * @param event 事件参数 * @return 是否处理事件 */ onDoubleClick(event: SMouseEvent): boolean { // 如果为show状态 双击改对象则需改为编辑状态 if (this.status == SItemStatus.Normal) { this.status = SItemStatus.Edit; // @ts-ignore this.grabItem(this); } else if (this.status == SItemStatus.Edit) { // 编辑状态 this.status = SItemStatus.Normal; this.releaseItem(); } else if (this.status == SItemStatus.Create) { // 创建状态 if (this.pointList.length > 1) { this.status = SItemStatus.Normal; this.releaseItem(); this.$emit("finishCreated"); } } this.$emit("onDoubleClick", event); return true; } /** * 键盘按键弹起事件 * * @param event 事件参数 */ onKeyUp(event: KeyboardEvent): void { if (event.keyCode == SKeyCode.Enter) { if (this.pointList.length > 1) { if (this.status == SItemStatus.Create) { this.$emit("finishCreated"); } this.status = SItemStatus.Normal; this.releaseItem(); } } // delete删除点 if ( event.keyCode == SKeyCode.Delete && this.status == SItemStatus.Edit ) { this.deletePoint(this.curIndex); } } /** * 获取点击点与点集中距离最近点 * * @param p 鼠标点击点 */ findNearestPoint(p: SPoint): void { let len = this.sceneDis; for (let i = 0; i < this.pointList.length; i++) { let dis = SMathUtil.pointDistance( p.x, p.y, this.pointList[i].x, this.pointList[i].y ); if (dis < len) { len = dis; this.curIndex = i; this.curPoint = new SPoint( this.pointList[this.curIndex].x, this.pointList[this.curIndex].y ); } } } /** * 计算增加点的位置 * * @param p 鼠标点击点 */ findAddPos(p: SPoint): void { let len = SMathUtil.pointToLine( p, new SLine(this.pointList[0], this.pointList[1]) ), index = 0; if (this.pointList.length > 2) { for (let i = 1; i < this.pointList.length - 1; i++) { let dis = SMathUtil.pointToLine( p, new SLine(this.pointList[i], this.pointList[i + 1]) ); if (dis.MinDis < len.MinDis) { len = dis; index = i; } } } if (len.MinDis < this.sceneDis) { if (len.Point) { this.addPoint(len.Point, index + 1); } } } /** * shift 垂直水平创建或编辑 * * @param event 事件 * @return 处理后的鼠标事件 */ compare(event: SMouseEvent): SMouseEvent { if (this.pointList.length) { let last = new SPoint(event.x, event.y); if (this.status == SItemStatus.Create) { last = this.pointList[this.pointList.length - 1]; } else if (this.status == SItemStatus.Edit) { if (this.curIndex > 1) { last = this.pointList[this.curIndex - 1]; } } const dx = Math.abs(event.x - last.x); const dy = Math.abs(event.y - last.y); if (dy > dx) { event.x = last.x; } else { event.y = last.y; } } return event; } /** * 记录相关动作并推入栈中 * * @param SGraphCommand 相关命令类 * @param any 对应传入参数 */ protected recordAction(SGraphCommand: any, any: any[]): void { // 记录相关命令并推入堆栈中 const command = new SGraphCommand(this.scene, this, ...any); this.undoStack.push(command); } /** * Item 对象边界区域 * * @return 对象边界区域 */ boundingRect(): SRect { if (this.pointList.length) { this.minX = this.pointList[0].x; this.maxX = this.pointList[0].x; this.minY = this.pointList[0].y; this.maxY = this.pointList[0].y; this.pointList.forEach(it => { let x = it.x, y = it.y; if (x < this.minX) { this.minX = x; } if (y < this.minY) { this.minY = y; } if (x > this.maxX) { this.maxX = x; } if (y > this.maxY) { this.maxY = y; } }); } return new SRect( this.minX, this.minY, this.maxX - this.minX, this.maxY - this.minY ); } /** * 判断点是否在区域内 * * @param x x 坐标 * @param y y 坐标 * @return 是否在区域内 */ contains(x: number, y: number): boolean { let p = new SPoint(x, y); for (let i = 1; i < this.pointList.length; i++) { let PTL = SMathUtil.pointToLine( p, new SLine( this.pointList[i - 1].x, this.pointList[i - 1].y, this.pointList[i].x, this.pointList[i].y ) ); if (PTL.MinDis < this.sceneDis) { return true; } } return false; } /** * 撤销操作 */ undo(): void { if (this._status != SItemStatus.Normal) { this.undoStack.undo(); } } /** * 重做操作 */ redo(): void { if (this._status != SItemStatus.Normal) { this.undoStack.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(); } } /** * 绘制基本图形 * * @param painter 绘制对象 */ 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); } /** * 返回对象储存的相关数据 * * @return 对象储存的相关数据 */ toData(): any { return this.data; } /** * Item 绘制操作 * * @param painter 绘制对象 */ 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,是否选中 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); } } }