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135 lines
6.2 KiB
135 lines
6.2 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Media;
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using System.Globalization;
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namespace Utils.Printers
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{
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public class PrinterUtil
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{//TODO:改为文字受宽度限制：即当文字超长时，截断超长部分
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/// <summary>
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/// 绘制文字（打印用）
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/// </summary>
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/// <param name="startPoint">文字左上角的起始坐标(不是文字的实际坐标，实际坐标还受到左边距和行距的影响)</param>
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/// <param name="dc">DrawingContext</param>
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/// <param name="text">文字</param>
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/// <param name="fontSize">字的大小</param>
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/// <param name="textLeftMargin">左边距。文字最左侧的距起始坐标左侧的距离</param>
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/// <param name="lineDistance">行距</param>
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/// <param name="typeFace">Typeface</param>
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/// <param name="nextLineY">下一行文字的起始Y坐标位置</param>
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/// <returns>文字最右上角的坐标</returns>
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public static Point DrawText(Point startPoint, DrawingContext dc, string text, double fontSize, double textLeftMargin, double lineDistance, Typeface typeFace, out double nextLineY)
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{
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var ft = GetFormattedText(text, typeFace, fontSize);
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double textHeight;
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if (string.IsNullOrEmpty(text))
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textHeight = GetFormattedText("龙", typeFace, fontSize).Height;
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else
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textHeight = ft.Height;
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dc.DrawText(ft, new Point(startPoint.X + textLeftMargin, startPoint.Y + lineDistance / 2));
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nextLineY = startPoint.Y + lineDistance + textHeight;
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return new Point(startPoint.X + ft.Width + textLeftMargin, startPoint.Y);
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}
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/// <summary>
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/// 绘制文字（打印用）
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/// </summary>
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/// <param name="startPoint">文字左上角的起始坐标(不是文字的实际坐标，实际坐标还受到左边距和行距的影响)</param>
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/// <param name="dc">DrawingContext</param>
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/// <param name="text">文字</param>
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/// <param name="fontSize">字的大小</param>
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/// <param name="lineDistance">行距</param>
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/// <param name="typeFace">Typeface</param>
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/// <param name="nextLineY">下一行文字的起始Y坐标位置</param>
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/// <returns>文字最右上角的坐标</returns>
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public static Point DrawText(Point startPoint, DrawingContext dc, string text, double fontSize, double lineDistance, Typeface typeFace, out double nextLineY)
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{
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return DrawText(startPoint, dc, text, fontSize, 0, lineDistance, typeFace, out nextLineY);
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}
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/// <summary>
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/// 绘制文字（打印用）
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/// </summary>
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/// <param name="startPoint">文字左上角的起始坐标(不是文字的实际坐标，实际坐标还受到左边距和行距的影响)</param>
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/// <param name="dc">DrawingContext</param>
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/// <param name="text">文字</param>
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/// <param name="fontSize">字的大小</param>
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/// <param name="lineDistance">行距</param>
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/// <param name="typeFace">Typeface</param>
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/// <returns>文字最右上角的坐标</returns>
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public static Point DrawText(Point startPoint, DrawingContext dc, string text, double fontSize, double lineDistance, Typeface typeFace)
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{
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double nextLineY;
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return DrawText(startPoint, dc, text, fontSize, 0, lineDistance, typeFace, out nextLineY);
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}
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/// <summary>
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/// 绘制带框的文字（打印用）
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/// </summary>
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/// <param name="startPoint">框的左上角的坐标</param>
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/// <param name="dc">DrawingContext</param>
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/// <param name="text">文字</param>
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/// <param name="fontSize">字的大小</param>
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/// <param name="typeFace">Typeface</param>
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/// <param name="rectangleWidth">框的宽度</param>
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/// <param name="rectangleThickness">框的粗细</param>
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/// <param name="textLeftMargin">文字左侧到框的距离</param>
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/// <param name="lineDistance">行距</param>
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/// <param name="nextLineY">框的底线的Y坐标</param>
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/// <returns>框的右上角坐标</returns>
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public static Point DrawTextWithRectangle(Point startPoint, DrawingContext dc, string text, double fontSize, Typeface typeFace, double rectangleWidth, double rectangleThickness, double textLeftMargin, double lineDistance, out double nextLineY)
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{
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var rightPoint = DrawText(startPoint, dc, text, fontSize, textLeftMargin, lineDistance, typeFace, out nextLineY);
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dc.DrawRectangle(null, new Pen(Brushes.Black, rectangleThickness), new Rect(startPoint.X, startPoint.Y, rectangleWidth, nextLineY - startPoint.Y));
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return new Point(startPoint.X + rectangleWidth, startPoint.Y);
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}
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/// <summary>
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/// 绘制带框的文字（打印用）
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/// </summary>
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/// <param name="startPoint">框的左上角的坐标</param>
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/// <param name="dc">DrawingContext</param>
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/// <param name="text">文字</param>
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/// <param name="fontSize">字的大小</param>
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/// <param name="typeFace">Typeface</param>
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/// <param name="rectangleWidth">框的宽度</param>
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/// <param name="rectangleThickness">框的粗细</param>
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/// <param name="textLeftMargin">文字左侧到框的距离</param>
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/// <param name="lineDistance">文字顶部到框的距离</param>
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/// <returns>框的右上角坐标</returns>
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public static Point DrawTextWithRectangle(Point startPoint, DrawingContext dc, string text, double fontSize, Typeface typeFace, double rectangleWidth, double rectangleThickness, double textLeftMargin, double lineDistance)
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{
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double nextLineY;
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return DrawTextWithRectangle(startPoint, dc, text, fontSize, typeFace, rectangleWidth, rectangleThickness, textLeftMargin, lineDistance, out nextLineY);
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}
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/// <summary>
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/// 按指定样式格式化字符
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/// </summary>
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public static FormattedText GetFormattedText(string text, Typeface typeFace, double fontSize)
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{
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return new FormattedText(text, CultureInfo.CurrentCulture, FlowDirection.LeftToRight, typeFace, fontSize, Brushes.Black);
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}
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/// <summary>
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/// 获取文字的宽度
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/// </summary>
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/// <param name="charCount">文字个数</param>
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/// <param name="fontSize">字号</param>
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/// <param name="typeFace">Typeface</param>
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/// <returns>文字的宽度</returns>
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public static double GetWidth(int charCount, double fontSize, Typeface typeFace)
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{
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string text = string.Empty;
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for (int i = 0; i < charCount; i++)
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text += "字";
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var ft = GetFormattedText(text, typeFace, fontSize);
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return ft.Width;
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}
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}
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}
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