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- 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
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