// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
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// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
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// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
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// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
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// YOU MAY OBTAIN A COPY OF THE LICENSE AT
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
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// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
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// LIMITATIONS UNDER THE License.
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// GITEE: https://gitee.com/antdui/AntdUI
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// GITHUB: https://github.com/AntdUI/AntdUI
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// CSDN: https://blog.csdn.net/v_132
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// QQ: 17379620
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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namespace AntdUI
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{
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/// <summary>
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/// 修正文本渲染
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/// </summary>
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public static class CorrectionTextRendering
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{
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internal static Dictionary<string, float> tmpChinese = new Dictionary<string, float>();
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internal static Dictionary<string, float> tmpEnglish = new Dictionary<string, float>();
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static bool enable = false;
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static string defTextChinese = "不";
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static string defTextEnglish = "X";
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static int defFontSize = 20;
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internal static void Set(string familie)
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{
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enable = true;
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using (var font = new Font(familie, defFontSize))
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{
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int size = Helper.GDI(g =>
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{
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return (int)(g.MeasureString(defTextChinese, font).Height * 1.2F);
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});
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float valChinese = GetFontOffset(font, size, defTextChinese);
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float valEnglish = GetFontOffset(font, size, defTextEnglish);
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if (valChinese <= 1 && valChinese >= -1)
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{
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//误差 1以内可以接受
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lock (tmpChinese)
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{
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if (tmpChinese.ContainsKey(familie)) tmpChinese.Remove(familie);
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}
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}
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else
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{
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var oy = valChinese / defFontSize;
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lock (tmpChinese)
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{
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if (tmpChinese.ContainsKey(familie)) tmpChinese[familie] = oy;
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else tmpChinese.Add(familie, oy);
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}
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}
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if (valEnglish <= 1 && valEnglish >= -1)
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{
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//误差 1以内可以接受
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lock (tmpEnglish)
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{
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if (tmpEnglish.ContainsKey(familie)) tmpEnglish.Remove(familie);
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}
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}
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else
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{
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var oy = valEnglish / defFontSize;
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lock (tmpEnglish)
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{
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if (tmpEnglish.ContainsKey(familie)) tmpEnglish[familie] = oy;
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else tmpEnglish.Add(familie, oy);
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}
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}
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}
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}
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static float GetFontOffset(Font font, int size, string text)
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{
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float cs = size / 2F;
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using (var s_f = Helper.SF_NoWrap())
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{
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using (var bmp = new Bitmap(size, size))
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{
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using (var g_o = Graphics.FromImage(bmp).High())
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{
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g_o.DrawString(text, font, Brushes.Black, new Rectangle(0, 0, bmp.Width, bmp.Height), s_f);
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}
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TextRealY(bmp, out var ry, out var rheight);
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float ready = ry + rheight / 2F;
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return cs - ready;
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}
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}
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}
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/// <summary>
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/// 获取文本真实Y高度
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/// </summary>
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/// <param name="bmp">图片</param>
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/// <param name="y">Y</param>
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/// <param name="h">高度</param>
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public static void TextRealY(Bitmap bmp, out int y, out int h)
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{
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y = TextRealY(bmp);
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h = TextRealHeight(bmp, y);
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}
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static int TextRealY(Bitmap bmp)
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{
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for (int y = 0; y < bmp.Height; y++)
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{
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for (int x = 0; x < bmp.Width; x++)
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{
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if (bmp.GetPixel(x, y).A > 0) return y - 1;
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}
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}
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return 0;
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}
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static int TextRealHeight(Bitmap bmp, int _y)
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{
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for (int y = bmp.Height - 1; y > _y; y--)
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{
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int count = 0;
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for (int x = 0; x < bmp.Width; x++)
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{
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if (bmp.GetPixel(x, y).A > 0) count++;
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}
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if (count > 0) return (y + 1) - _y;
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}
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return bmp.Height - _y;
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}
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#region 渲染字体
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public static void DrawStr(this Graphics g, string? s, Font font, Brush brush, RectangleF layoutRectangle)
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{
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CORE(font, s, ref layoutRectangle);
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g.DrawString(s, font, brush, layoutRectangle, null);
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}
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public static void DrawStr(this Graphics g, string? s, Font font, Brush brush, Rectangle layoutRectangle, StringFormat? format)
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{
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CORE(font, s, ref layoutRectangle);
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g.DrawString(s, font, brush, layoutRectangle, format);
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}
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public static void DrawStr(this Graphics g, string? s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat? format)
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{
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CORE(font, s, ref layoutRectangle);
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g.DrawString(s, font, brush, layoutRectangle, format);
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}
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#endregion
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#region 误差核心
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static void CORE(Font font, string? text, ref RectangleF layoutRectangle)
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{
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if (enable && text != null)
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{
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if (text.ContainsChinese())
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{
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if (tmpChinese.TryGetValue(font.Name, out var oy)) layoutRectangle.Offset(0, oy * font.Size);
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}
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else if (tmpEnglish.TryGetValue(font.Name, out var oy)) layoutRectangle.Offset(0, oy * font.Size);
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}
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}
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static void CORE(Font font, string? text, ref Rectangle layoutRectangle)
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{
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if (enable && text != null)
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{
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if (text.ContainsChinese())
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{
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if (tmpChinese.TryGetValue(font.Name, out var oy)) layoutRectangle.Offset(0, (int)Math.Round(oy * font.Size));
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}
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else if (tmpEnglish.TryGetValue(font.Name, out var oy)) layoutRectangle.Offset(0, (int)Math.Round(oy * font.Size));
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}
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}
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static bool ContainsChinese(this string input)
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{
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return System.Text.RegularExpressions.Regex.IsMatch(input, @"[\u4e00-\u9fa5]");
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}
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#endregion
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}
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}
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