水印图片

[shaohui139]

在给图片添加文字的时候，如果文字长度超出图片的宽度，如何让文字自动换行呢，在网上搜了半天也没找到好的解决办法，
部分代码如下：

        protected void Button1_Click(object sender, EventArgs e)
        {
            if (FileUpload1.PostedFile.FileName.Trim() != "")
            {
                //上传文件
                string extension = Path.GetExtension(FileUpload1.PostedFile.FileName).ToUpper();
                string fileName = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString();
                string path = Server.MapPath("web/") + fileName + extension;
                FileUpload1.PostedFile.SaveAs(path);

                //加文字水印，
                System.Drawing.Image image = System.Drawing.Image.FromFile(path);
                Graphics g = Graphics.FromImage(image);
                g.DrawImage(image, 0, 0, image.Width, image.Height);
                Font f = new Font("微软雅黑", 20);
                Brush b = new SolidBrush(Color.Yellow);
                 g.DrawString("若要检查宏安全性设置，请单击 Microsoft Office 按钮，再单击“<程序名> 选项”，然后依次单击“信任中心”、“信任中心设置”。水印文字", f, b, 30, 20);
                g.Dispose();


                //保存加水印过后的图片,删除原始图片
                string newPath = Server.MapPath("web/") + fileName + "_new" + extension;
                image.Save(newPath);
                image.Dispose();
                if (File.Exists(path))
                {
                    File.Delete(path);
                }

                Image1.ImageUrl = newPath;
            }


        }

[cpio]

g.DrawString的时候，用这个重载函数

public void DrawString (
string s,
Font font,
Brush brush,
RectangleF layoutRectangle,
StringFormat format
)


示例：
(PaintEventArgs e)
{

// Create string to draw.
String drawString = "Sample Text";

// Create font and brush.
Font drawFont = new Font("Arial", 16);
SolidBrush drawBrush = new SolidBrush(Color.Black);

// Create rectangle for drawing.
float x = 150.0F;
float y = 150.0F;
float width = 200.0F;
float height = 50.0F;
RectangleF drawRect = new RectangleF(x, y, width, height);

// Draw rectangle to screen.
Pen blackPen = new Pen(Color.Black);
e.Graphics.DrawRectangle(blackPen, x, y, width, height);

// Set format of string.
StringFormat drawFormat = new StringFormat();
drawFormat.Alignment = StringAlignment.Center;

// Draw string to screen.
e.Graphics.DrawString(drawString, drawFont, drawBrush, drawRect, drawFormat);
}

[gyouyang]

没遇到这个问题... 帮忙顶 up

[zgke]

Graphics _Graphcis = Graphics.FromHwnd(panel1.Handle);

Font f = new Font("微软雅黑", 20);
Brush b = new SolidBrush(Color.Yellow);

string _Value = "若要检查宏安全性设置，请单击 Microsoft Office 按钮，再单击“<程序名> 选项”，然后依次单击“信任中心”、“信任中心设置”。水印文字";

SizeF _Size= _Graphcis.MeasureString(_Value, f, 100);

_Graphcis.DrawString(_Value, f, b, new RectangleF(30, 20, _Size.Width, _Size.Height));

_Graphcis.Dispose();


这样指定宽 让自己绘制换行.

[rainsome]

mark

[CqCoder]

关注中

[shaohui139]

感谢你们的回复～～

[shaohui139]

[Quote=引用 1 楼 cpio 的回复:]
g.DrawString的时候，用这个重载函数

public void DrawString (
string s,
Font font,
Brush brush,
RectangleF layoutRectangle,
StringFormat format
)


示例：
(PaintEventArgs e)
{

// Create string to draw.
String drawString = "Sample Text";

// Create font and brush.
Font drawFont = new Font("Arial", 16);
SolidBrush drawBrush = new SolidBrush(Color.Black);

// Create rectangle …
[/Quote]
改成以下：

            String drawString = "上岛咖啡几mmmmmm点思考第三方接口的肌肤看到房价的开发进度看房记的疯狂的肌肤";

            Font f = new Font("微软雅黑", 20);
            Brush b = new SolidBrush(Color.Black);            
            float width = 200.0F;
            float height = 50.0F;
            RectangleF drawRect = new RectangleF(265, 70, width, height);

            // Draw rectangle to screen.
            Pen blackPen = new Pen(Color.Transparent);
            gPrimalClothing.DrawRectangle(blackPen,265, 70, width, height);

            // Set format of string.
            StringFormat drawFormat = new StringFormat();
            drawFormat.Alignment = StringAlignment.Center;

            // Draw string to screen.
            gPrimalClothing.DrawString(drawString, f, b, drawRect, drawFormat);

生成结果：
“上岛咖啡几”还没到边界就换行了（到边界的距离至少能容纳一个汉字），估计是碰到了后面的英文字母，这时候该如何设置呢

[shaohui139]

[Quote=引用 3 楼 zgke 的回复:]
Graphics _Graphcis = Graphics.FromHwnd(panel1.Handle);

Font f = new Font("微软雅黑", 20);
Brush b = new SolidBrush(Color.Yellow);

string _Value = "若要检查宏安全性设置，请单击 Microsoft Office 按钮，再单击“ <程序名> 选项”，然后依次单击“信任中心”、“信任中心设置”。水印文字";

SizeF _Size= _Graphcis.MeasureString(_Value, f, 100);

_Graphcis.DrawString(_Value, f, b, new RectangleF(3…
[/Quote]
改成如下：

                Font f = new Font("微软雅黑", 20);
                Brush b = new SolidBrush(Color.Black);

            string _Value = "上岛咖啡几mmmmmm点思考第三方接口的肌肤看到房价的开发进度看房记的疯狂的肌肤";

            SizeF _Size = gPrimalClothing.MeasureString(_Value, f, 200);//

           // _Graphcis.DrawString(_Value, f, b, new RectangleF(30, 20, _Size.Width, _Size.Height));

            gPrimalClothing.DrawString(_Value, f, b,new RectangleF(265, 70, _Size.Width, _Size.Height));

生成结果：

[cpio]

这种自动换行会把连起来的字母当成单词，所以要换行

如果要严格控制的话，需要进行量测，一个个的加，加到超出之后，减到最后加上去那个字符

[sssssssc]

SizeF _Size = gPrimalClothing.MeasureString(_Value, f, 200);//

gPrimalClothing指的是?
能说具体点吗?