为可以调整大小和居中定位的字符串创建矩形

Create rectangle for the string that can be resized and center positioned

起初,我使用drawString和GraphicsPath.AddString在pictureBox中绘制outlined/solid文字。我可以更改它的字体大小、样式和字体系列,但我意识到我无法 resized/stretch 文本,因为字体大小按比例分配给字符串。所以我被告知的解决方案是这样的:

I have been advised that in order to scale a Text (from a Draw String), I need to use a rectangle on which the text will depend on. In that way, I can resize the whole text (width, height, both). But I have no idea how to do it.

PS。如果还有其他方法,你可以告诉我。谢谢大家

这是我的 TextDrawing 方法:

public void DrawRects(Font f, string text, Graphics g, RectangleF rect)
    {
        List<RectangleF> list = new List<RectangleF>();
        using (StringFormat format = new StringFormat())
        {
            int i; 
            format.Alignment = StringAlignment.Near;
            format.LineAlignment = StringAlignment.Center;
            format.Trimming = StringTrimming.None;
            format.FormatFlags = StringFormatFlags.MeasureTrailingSpaces;
            CharacterRange[] ranges = new CharacterRange[text.Length];
            for (i = 0; i < text.Length; i++)
            {
                ranges[i] = new CharacterRange(i, 1);
            }
            format.SetMeasurableCharacterRanges(ranges);
            Region[] regionArray = g.MeasureCharacterRanges(text, f, rect, format);
            for (i = 0; i < regionArray.Length; i++)
            {
                list.Add(regionArray[i].GetBounds(g));
            }
            foreach (RectangleF r in list)
            {
                //g.SmoothingMode = SmoothingMode.AntiAlias;
                //g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
                //g.InterpolationMode = InterpolationMode.High;
                g.DrawRectangle(Pens.LightBlue, Rectangle.Round(r));
            }
            using (GraphicsPath path = new GraphicsPath())
            {
                path.AddString(text, f.FontFamily, Convert.ToInt32(f.Style), g.DpiY * rect.Height/72f, rect.Location, format);
                RectangleF text_rectf = path.GetBounds();
                PointF[] target_pts = {
                        new PointF(rect.Left, rect.Top),
                        new PointF(rect.Right, rect.Top),
                        new PointF(rect.Left, rect.Bottom)};
                g.Transform = new Matrix(text_rectf, target_pts);

                g.FillPath(Brushes.Red, path);
                g.DrawPath(Pens.Red, path);
                g.ResetTransform();
            }
            //g.SmoothingMode = SmoothingMode.AntiAlias;
            //g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAliasGridFit;
            //g.InterpolationMode = InterpolationMode.High;
            //g.DrawString(text, f, Brushes.Red, rect, format);

        }
    }

还有我的UI供大家参考:

我需要的结果:

编辑: 我更改了文本绘图上的代码,但我仍然不能做的是在每个字母上创建不同的矩形,这些矩形可以使用轨迹栏调整大小。

我试了一下,但无法计算出矩形与字母的关系...


尽管如此,我提出了一个更优雅、经过时间考验且数学上正确的解决方案。

Alex Fr 在他的 DrawTools 文章 中提供了一组出色的绘图工具,并且该项目是 Draw Tool Redux.

的基础

Alex Fr 的原始项目基于 Microsoft C++ MFC 示例项目,开发人员可以从 DRAWCLI 中学习。 DrawTools C# 程序重现了一些 DRAWCLI 功能并使用了此示例中的一些设计决策。这些天看到它的唯一方法是通过 WayBack machine link: https://web.archive.org/web/20120814082327/https://www.codeproject.com/Articles/8494/DrawTools

我建议您交换绘图库,并从设计精良的解决方案着手。 Draw Tool Redux 具有我认为您需要的大部分功能。除了旋转偏移,我相信我已经看到 example of in Rod Stephens book, here it is on WayBack Machine again: Interactively rotate images by an arbitrary angle in C#.