使用 GraphicsPath 正确绘制文本 [英] Properly draw text using GraphicsPath

问题描述

如下图所示，PictureBox 上的文本与 TextBox 中的文本不同.如果我使用 Graphics.DrawString()，它工作正常，但是当我使用图形路径时，它会截断并且不显示整个文本.你认为我的代码有什么问题?

As you can see in the image below, the text on the PictureBox is different from the one in the TextBox. It is working alright if I use Graphics.DrawString() but when I use the Graphics Path, it truncates and doesn't show the whole text. What do you think is wrong in my code?

这是我的代码:

public LayerClass DrawString(LayerClass.Type _text, string text, RectangleF rect, Font _fontStyle, PaintEventArgs e)
{
    using (StringFormat string_format = new StringFormat())
    {
        rect.Size = e.Graphics.MeasureString(text, _fontStyle);
        rect.Location = new PointF(Shape.center.X - (rect.Width / 2), Shape.center.Y - (rect.Height / 2));
        if(isOutlinedOrSolid)
        {
            using (GraphicsPath path = new GraphicsPath())
            {
                path.AddString(text, _fontStyle.FontFamily, (int)_fontStyle.Style, rect.Size.Height, rect, string_format);
                e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
                e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
                e.Graphics.CompositingMode = CompositingMode.SourceOver;
                e.Graphics.DrawPath(new Pen(Color.Red, 1), path);
            }
        }
        else
        {
            e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
            e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
            e.Graphics.CompositingMode = CompositingMode.SourceOver;
            e.Graphics.DrawString(text,_fontStyle,Brushes.Red, rect.Location);
        }
    }

    this._Text = text;
    this._TextRect = rect;
    return new LayerClass(_text, this, text, rect);
}

推荐答案

似乎您首先为字体大小提供了错误的度量，然后为画笔添加了额外的粗细.试试这个:

Seems you are providing wrong measure for font size in the first place and then adding extra thickness to the brush. Try this instead:

using (GraphicsPath path = new GraphicsPath())
{
    path.AddString(
        text,                         
        _fontStyle.FontFamily,      
        (int)_fontStyle.Style,      
        e.Graphics.DpiY * fontSize / 72f,       // em size
        new Point(0, 0),                       // location where to draw text
        string_format);          

    e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;
    e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
    e.Graphics.CompositingMode = CompositingMode.SourceOver;
    e.Graphics.DrawPath(new Pen(Color.Red), path);
}

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