import { SObjectItem } from "@persagy-web/graph/"; import { SPainter, SRect, SColor, SFont, SPoint } from "@persagy-web/draw"; import { SGraphItem } from "@persagy-web/graph/"; import { SLineStyle } from "@persagy-web/graph/"; import { STextOrigin } from "@persagy-web/graph/"; /** * 文本item * * @author 韩耀龙(han_yao_long@163.com) */ export class EditText extends SObjectItem { /** 记录painter */ private _painter: SPainter | null = null; /** 文本内容 */ private _text: string = ""; get text(): string { return this._text; } set text(v: string) { this._text = v; this._textArr = this.text.split(/\n/g); this.drawFormatText(); this.update(); } /** 切割后的文本数组 */ private _textArr: string[] = []; /** 文本颜色 */ private _color: SColor = new SColor("#333333"); get color(): SColor { return this._color; } set color(v: SColor) { this._color = v; this.update(); } /** 字体 */ private _font: SFont; get font(): SFont { return this._font; } set font(v: SFont) { this._font = v; this.drawFormatText(); this.update(); } /** 背景色 */ private _backgroundColor: SColor = SColor.Transparent; get backgroundColor(): SColor { return this._backgroundColor; } set backgroundColor(v: SColor) { this._backgroundColor = v; this.update(); } /** 边框色 */ private _strokeColor: SColor = SColor.Transparent; get strokeColor(): SColor { return this._strokeColor; } set strokeColor(v: SColor) { this._strokeColor = v; this.update(); } /** 边框宽度 */ private _lineWidth: number = 1; get lineWidth(): number { return this._lineWidth; } set lineWidth(v: number) { this._lineWidth = v; this.update(); } /** 边框样式 */ private _borderStyle: SLineStyle = SLineStyle.None; get borderStyle(): SLineStyle { return this._borderStyle; } set borderStyle(v: SLineStyle) { this._borderStyle = v; this.update(); } /** 原点位置 */ private _originPosition: STextOrigin = STextOrigin.LeftTop; get originPosition(): STextOrigin { return this._originPosition; } set originPosition(v: STextOrigin) { this._originPosition = v; this.update(); } /** 文本绘制最大宽 */ maxWidth: number | undefined = undefined; /** * 构造函数 * * @param parent 指向父Item * @param str 文本内容 */ constructor(parent: SGraphItem | null, str: string = "") { super(parent); this._text = str; this._font = new SFont("sans-serif", 12); this.height = 12; } // Constructor /** * 对象边界区域 * * @return 边界区域 */ boundingRect(): SRect { return new SRect( -this.origin.x, -this.origin.y, this.width, this.height ); } // Function boundingRect() /** * 移动后处理所有坐标,并肩原点置为场景原点 * * @param x x坐标 * @param y y坐标 */ moveToOrigin(x: number, y: number): void { this.moveTo(this.x + x, this.y + y); } // Function moveToOrigin() /** * 绘制显示状态文本Item * * @param painter 绘制类 */ protected drawShowText(painter: SPainter): void { painter.translate(-this.origin.x, -this.origin.y); //绘制矩形轮廓 if (this.selected) { painter.shadow.shadowBlur = 10; painter.shadow.shadowColor = new SColor(`#00000033`); painter.shadow.shadowOffsetX = 5; painter.shadow.shadowOffsetY = 5; } else { painter.shadow.shadowColor = SColor.Transparent; } painter.brush.color = this.backgroundColor; painter.pen.lineWidth = this.lineWidth; painter.pen.color = this.strokeColor; painter.drawRect(0, 0, this.width, this.height); //绘制文本 painter.brush.color = new SColor(this.color); painter.shadow.shadowColor = SColor.Transparent; painter.font = this.font; this._textArr.forEach((text: string, index: number) => { painter.drawText( text, this.font.size / 4, index * (this.font.size * 1.25) + this.font.size / 4, this.maxWidth ); }); } // Function drawShowText() /** * 根据换行切割文本,绘制多行并计算外轮廓宽高 * */ protected drawFormatText(): void { if (this._painter instanceof SPainter) { // 实例在 SPainter 绘制对象中 this._painter.save(); this._painter.font = this.font; let textMaxWidth = 0; let fontSize: number = this.font.size; this._textArr.forEach((text: string, index: number) => { let textWidth: number = this._painter ? this._painter.textWidth(text) + fontSize / 2 : fontSize / 2; if (textWidth > textMaxWidth) { textMaxWidth = textWidth; } }); // 在绘制文本后计算文本的宽高 this.width = textMaxWidth; this.height = fontSize * 1.25 * this._textArr.length + fontSize / 8; // 设置原点位置(默认左上角) if (this.originPosition == STextOrigin.Centrum) { this.origin = new SPoint(this.width / 2, this.height / 2); } this._painter.restore(); } } // Function drawFormatText() /** * Item绘制操作 * * @param painter 绘画类 */ onDraw(painter: SPainter): void { if (!(this._painter instanceof SPainter)) { // 实例在 SPainter 绘制对象中 this._painter = painter; this.drawFormatText(); } this.drawShowText(painter); } } // Class STextItem