404 lines
14 KiB
C#
404 lines
14 KiB
C#
/******************************************************************************
|
||
* SunnyUI 开源控件库、工具类库、扩展类库、多页面开发框架。
|
||
* CopyRight (C) 2012-2020 ShenYongHua(沈永华).
|
||
* QQ群：56829229 QQ：17612584 EMail：SunnyUI@qq.com
|
||
*
|
||
* Blog: https://www.cnblogs.com/yhuse
|
||
* Gitee: https://gitee.com/yhuse/SunnyUI
|
||
* GitHub: https://github.com/yhuse/SunnyUI
|
||
*
|
||
* SunnyUI.dll can be used for free under the GPL-3.0 license.
|
||
* If you use this code, please keep this note.
|
||
* 如果您使用此代码，请保留此说明。
|
||
******************************************************************************
|
||
* 文件名称: UFontImage.cs
|
||
* 文件说明: 字体图片帮助类
|
||
* 当前版本: V2.2
|
||
* 创建日期: 2020-01-01
|
||
*
|
||
* 2020-01-01: V2.2.0 增加文件说明
|
||
******************************************************************************/
|
||
|
||
using System;
|
||
using System.Collections.Generic;
|
||
using System.Drawing;
|
||
using System.Drawing.Drawing2D;
|
||
using System.Drawing.Imaging;
|
||
using System.Drawing.Text;
|
||
using System.IO;
|
||
using System.Windows.Forms;
|
||
|
||
namespace Sunny.UI
|
||
{
|
||
/// <summary>
|
||
/// 字体图片帮助类
|
||
/// </summary>
|
||
public static class FontImageHelper
|
||
{
|
||
/// <summary>
|
||
/// AwesomeFont
|
||
/// </summary>
|
||
public static FontImages AwesomeFont;
|
||
|
||
/// <summary>
|
||
/// ElegantFont
|
||
/// </summary>
|
||
public static FontImages ElegantFont;
|
||
|
||
/// <summary>
|
||
/// 构造函数
|
||
/// </summary>
|
||
static FontImageHelper()
|
||
{
|
||
string font = DirEx.CurrentDir() + "FontAwesome.ttf";
|
||
CreateFontFile(font, "Sunny.UI.Font.FontAwesome.ttf");
|
||
AwesomeFont = new FontImages(DirEx.CurrentDir() + "FontAwesome.ttf");
|
||
|
||
font = DirEx.CurrentDir() + "ElegantIcons.ttf";
|
||
CreateFontFile(font, "Sunny.UI.Font.ElegantIcons.ttf");
|
||
ElegantFont = new FontImages(DirEx.CurrentDir() + "ElegantIcons.ttf");
|
||
}
|
||
|
||
/// <summary>
|
||
/// 从系统资源中保存字体文件
|
||
/// </summary>
|
||
/// <param name="file">字体文件名</param>
|
||
/// <param name="resource">资源名称</param>
|
||
private static void CreateFontFile(string file, string resource)
|
||
{
|
||
if (!File.Exists(file))
|
||
{
|
||
Stream fontStream = System.Reflection.Assembly.GetExecutingAssembly().GetManifestResourceStream(resource);
|
||
if (fontStream != null)
|
||
{
|
||
byte[] buffer = new byte[fontStream.Length];
|
||
fontStream.Read(buffer, 0, (int)fontStream.Length);
|
||
fontStream.Close();
|
||
|
||
File.WriteAllBytes(file, buffer);
|
||
}
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取字体大小
|
||
/// </summary>
|
||
/// <param name="graphics">GDI绘图</param>
|
||
/// <param name="symbol">字符</param>
|
||
/// <param name="symbolSize">大小</param>
|
||
/// <returns>字体大小</returns>
|
||
public static SizeF GetFontImageSize(this Graphics graphics, int symbol, int symbolSize)
|
||
{
|
||
Font font = GetFont(symbol, symbolSize);
|
||
if (font == null)
|
||
{
|
||
return new SizeF(0, 0);
|
||
}
|
||
|
||
Label Image = new Label();
|
||
Image.AutoSize = true;
|
||
Image.Font = font;
|
||
Image.Text = char.ConvertFromUtf32(symbol);
|
||
Size ImageSize = Image.PreferredSize;
|
||
Image.Dispose();
|
||
return ImageSize;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制字体图片
|
||
/// </summary>
|
||
/// <param name="graphics">GDI绘图</param>
|
||
/// <param name="symbol">字符</param>
|
||
/// <param name="symbolSize">大小</param>
|
||
/// <param name="color">颜色</param>
|
||
/// <param name="left">左</param>
|
||
/// <param name="top">上</param>
|
||
/// <param name="xOffset">左右偏移</param>
|
||
/// <param name="yOffSet">上下偏移</param>
|
||
public static void DrawFontImage(this Graphics graphics, int symbol, int symbolSize, Color color, float left, float top, int xOffset = 0, int yOffSet = 0)
|
||
{
|
||
//字体
|
||
Font font = GetFont(symbol, symbolSize);
|
||
if (font == null)
|
||
{
|
||
return;
|
||
}
|
||
|
||
string text = char.ConvertFromUtf32(symbol);
|
||
graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
|
||
graphics.DrawString(text, font, color, left + xOffset, top + yOffSet);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 绘制字体图片
|
||
/// </summary>
|
||
/// <param name="graphics">GDI绘图</param>
|
||
/// <param name="symbol">字符</param>
|
||
/// <param name="symbolSize">大小</param>
|
||
/// <param name="color">颜色</param>
|
||
/// <param name="rect">区域</param>
|
||
/// <param name="xOffset">左右偏移</param>
|
||
/// <param name="yOffSet">上下偏移</param>
|
||
public static void DrawFontImage(this Graphics graphics, int symbol, int symbolSize, Color color, Rectangle rect, int xOffset = 0, int yOffSet = 0)
|
||
{
|
||
SizeF sf = graphics.GetFontImageSize(symbol, symbolSize);
|
||
graphics.DrawFontImage(symbol, symbolSize, color, rect.Left + (rect.Width - sf.Width) / 2.0f,
|
||
rect.Top + (rect.Height - sf.Height) / 2.0f, xOffset, yOffSet);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 创建图片
|
||
/// </summary>
|
||
/// <param name="symbol">字符</param>
|
||
/// <param name="size">大小</param>
|
||
/// <param name="color">颜色</param>
|
||
/// <returns>图片</returns>
|
||
public static Image CreateImage(int symbol, int size, Color color)
|
||
{
|
||
Bitmap image = new Bitmap(size, size);
|
||
Graphics g = image.Graphics();
|
||
SizeF ImageSize = g.GetFontImageSize(symbol, size);
|
||
Font font = GetFont(symbol, size);
|
||
g.DrawString(char.ConvertFromUtf32(symbol), font, color, (size - ImageSize.Width) / 2.0f, (size - ImageSize.Height) / 2.0f);
|
||
return image;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取字体
|
||
/// </summary>
|
||
/// <param name="symbol">字符</param>
|
||
/// <param name="imageSize">大小</param>
|
||
/// <returns>字体</returns>
|
||
public static Font GetFont(int symbol, int imageSize)
|
||
{
|
||
if (symbol > 0xF000)
|
||
return AwesomeFont.GetFont(symbol, imageSize);
|
||
else
|
||
return ElegantFont.GetFont(symbol, imageSize);
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 字体图标图片
|
||
/// </summary>
|
||
public class FontImages
|
||
{
|
||
private readonly PrivateFontCollection ImageFont;
|
||
private readonly Dictionary<int, Font> Fonts = new Dictionary<int, Font>();
|
||
private const int MinFontSize = 8;
|
||
private const int MaxFontSize = 43;
|
||
|
||
/// <summary>
|
||
/// 大小
|
||
/// </summary>
|
||
public int IconSize { get; set; } = 128;
|
||
|
||
/// <summary>
|
||
/// 背景色
|
||
/// </summary>
|
||
public Color BackColor { get; set; } = Color.Transparent;
|
||
|
||
/// <summary>
|
||
/// 前景色
|
||
/// </summary>
|
||
public Color ForeColor { get; set; } = Color.Black;
|
||
|
||
/// <summary>
|
||
/// 构造函数
|
||
/// </summary>
|
||
/// <param name="filename">字体文件名</param>
|
||
public FontImages(string filename)
|
||
{
|
||
if (File.Exists(filename))
|
||
{
|
||
ImageFont = new PrivateFontCollection();
|
||
ImageFont.AddFontFile(filename);
|
||
Loaded = true;
|
||
LoadDictionary();
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 字体加载完成标志
|
||
/// </summary>
|
||
public bool Loaded { get; }
|
||
|
||
private void LoadDictionary()
|
||
{
|
||
int size = MinFontSize;
|
||
for (int i = 0; i <= MaxFontSize - MinFontSize; i++)
|
||
{
|
||
Fonts.Add(size, GetFont(size));
|
||
size += 1;
|
||
}
|
||
}
|
||
|
||
/// <summary>
|
||
/// 析构函数
|
||
/// </summary>
|
||
~FontImages()
|
||
{
|
||
foreach (var font in Fonts.Values)
|
||
{
|
||
font.Dispose();
|
||
}
|
||
|
||
Fonts.Clear();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取图标
|
||
/// </summary>
|
||
/// <param name="iconText">序号</param>
|
||
/// <param name="imageSize">图标大小</param>
|
||
/// <returns>图标</returns>
|
||
public Icon GetIcon(int iconText, int imageSize)
|
||
{
|
||
Bitmap image = GetImage(iconText, imageSize);
|
||
return image != null ? ToIcon(image, IconSize) : null;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取字体
|
||
/// </summary>
|
||
/// <param name="iconText">图标</param>
|
||
/// <param name="imageSize">图标大小</param>
|
||
/// <returns>字体</returns>
|
||
public Font GetFont(int iconText, int imageSize)
|
||
{
|
||
return Fonts[GetFontSize(iconText, imageSize)];
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取字体大小
|
||
/// </summary>
|
||
/// <param name="iconText">图标</param>
|
||
/// <param name="imageSize">图标大小</param>
|
||
/// <returns>字体大小</returns>
|
||
public int GetFontSize(int iconText, int imageSize)
|
||
{
|
||
int size = MaxFontSize;
|
||
using (Bitmap bitmap = new Bitmap(48, 48))
|
||
using (Graphics graphics = Graphics.FromImage(bitmap))
|
||
{
|
||
for (int i = 0; i <= (MaxFontSize - MinFontSize); i++)
|
||
{
|
||
Font font = Fonts[size];
|
||
SizeF sf = GetIconSize(iconText, graphics, font);
|
||
|
||
if (sf.Width < imageSize && sf.Height < imageSize)
|
||
{
|
||
break;
|
||
}
|
||
|
||
size -= 1;
|
||
}
|
||
}
|
||
|
||
return size;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 获取图片
|
||
/// </summary>
|
||
/// <param name="iconText">图标</param>
|
||
/// <param name="imageSize">图标大小</param>
|
||
/// <returns>图片</returns>
|
||
public Bitmap GetImage(int iconText, int imageSize)
|
||
{
|
||
Font imageFont = Fonts[MinFontSize];
|
||
SizeF textSize = new SizeF(imageSize, imageSize);
|
||
using (Bitmap bitmap = new Bitmap(48, 48))
|
||
using (Graphics graphics = Graphics.FromImage(bitmap))
|
||
{
|
||
int size = MaxFontSize;
|
||
for (int i = 0; i <= MaxFontSize - MinFontSize; i++)
|
||
{
|
||
Font font = Fonts[size];
|
||
SizeF sf = GetIconSize(iconText, graphics, font);
|
||
|
||
if (sf.Width < imageSize && sf.Height < imageSize)
|
||
{
|
||
imageFont = font;
|
||
textSize = sf;
|
||
break;
|
||
}
|
||
|
||
size -= 1;
|
||
}
|
||
}
|
||
|
||
Size iconSize = textSize.ToSize();
|
||
Bitmap srcImage = new Bitmap(iconSize.Width, iconSize.Height);
|
||
using (Graphics graphics = Graphics.FromImage(srcImage))
|
||
{
|
||
string s = char.ConvertFromUtf32(iconText);
|
||
graphics.TextRenderingHint = TextRenderingHint.AntiAlias;
|
||
graphics.InterpolationMode = InterpolationMode.HighQualityBilinear;
|
||
//graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
|
||
//graphics.SmoothingMode = SmoothingMode.HighQuality;
|
||
graphics.DrawString(s, imageFont, ForeColor, new PointF(0.0f, 0.0f));
|
||
}
|
||
|
||
Bitmap result = new Bitmap(imageSize, imageSize);
|
||
using (Graphics graphics = Graphics.FromImage(result))
|
||
{
|
||
graphics.DrawImage(srcImage, imageSize / 2.0f - textSize.Width / 2.0f, imageSize / 2.0f - textSize.Height / 2.0f);
|
||
}
|
||
|
||
srcImage.Dispose();
|
||
return result;
|
||
}
|
||
|
||
private Size GetIconSize(int iconText, Graphics graphics, Font font)
|
||
{
|
||
string text = char.ConvertFromUtf32(iconText);
|
||
return graphics.MeasureString(text, font).ToSize();
|
||
}
|
||
|
||
private Icon ToIcon(Bitmap srcBitmap, int size)
|
||
{
|
||
if (srcBitmap == null)
|
||
{
|
||
throw new ArgumentNullException(nameof(srcBitmap));
|
||
}
|
||
|
||
Icon icon;
|
||
using (MemoryStream memoryStream = new MemoryStream())
|
||
{
|
||
new Bitmap(srcBitmap, new Size(size, size)).Save(memoryStream, ImageFormat.Png);
|
||
Stream stream = new MemoryStream();
|
||
BinaryWriter binaryWriter = new BinaryWriter(stream);
|
||
if (stream.Length <= 0L)
|
||
{
|
||
return null;
|
||
}
|
||
|
||
binaryWriter.Write((byte)0);
|
||
binaryWriter.Write((byte)0);
|
||
binaryWriter.Write((short)1);
|
||
binaryWriter.Write((short)1);
|
||
binaryWriter.Write((byte)size);
|
||
binaryWriter.Write((byte)size);
|
||
binaryWriter.Write((byte)0);
|
||
binaryWriter.Write((byte)0);
|
||
binaryWriter.Write((short)0);
|
||
binaryWriter.Write((short)32);
|
||
binaryWriter.Write((int)memoryStream.Length);
|
||
binaryWriter.Write(22);
|
||
binaryWriter.Write(memoryStream.ToArray());
|
||
binaryWriter.Flush();
|
||
binaryWriter.Seek(0, SeekOrigin.Begin);
|
||
icon = new Icon(stream);
|
||
stream.Dispose();
|
||
}
|
||
|
||
return icon;
|
||
}
|
||
|
||
private Font GetFont(float size)
|
||
{
|
||
return Loaded ? new Font(ImageFont.Families[0], size, FontStyle.Regular, GraphicsUnit.Point) : null;
|
||
}
|
||
}
|
||
} |