如何在圖像上的文字下生成陰影

Question

public static System.Drawing.Image GenerateGiftCard(String text, Font font, Color textColor) 
{ 
    System.Drawing.Image img = Bitmap.FromFile(@"G:\xxx\images\gift-card.jpg"); 
    Graphics drawing = Graphics.FromImage(img); 

    //measure the string to see how big the image needs to be 
    SizeF textSize = drawing.MeasureString(text, font); 

    //create a brush for the text 
    Brush textBrush = new SolidBrush(textColor); 

    float x, y; 

    x = img.Width/2 - textSize.Width/2; 
    y = img.Height/2 - textSize.Height/2; 

    drawing.DrawString(text, font, textBrush, x, y); 

    drawing.Save(); 

    textBrush.Dispose(); 
    drawing.Dispose(); 

    return img; 
} 

但是，此代碼生成的文本是「普通」而不是尺寸標註，並且它下面沒有陰影。

這是字體風格我想：

有什麼我可以做，以產生通過我的代碼相同的風格？

有誰知道如何使用SiteMapPath或ResolveURL對象將相對路徑轉移到物理路徑嗎？歡呼聲，

Answer 1

首先渲染陰影，方法是在偏移處用較暗的半透明畫筆繪製文本。陰影渲染後，覆蓋常規文本。

例：

public static System.Drawing.Image GenerateGiftCard(String text, Font font, Color textColor, Color shadowColor, SizeF shadowOffset) 
{ 
    System.Drawing.Image img = Bitmap.FromFile(@"G:\xxxx\images\gift-card.jpg"); 
    Graphics drawing = Graphics.FromImage(img); 

    //measure the string to see how big the image needs to be 
    SizeF textSize = drawing.MeasureString(text, font); 

    //create a brush for the text 
    Brush shadowBrush = new SolidBrush(shadowColor); // <-- Here 
    Brush textBrush = new SolidBrush(textColor); 

    float x, y; 

    x = img.Width/2 - textSize.Width/2; 
    y = img.Height/2 - textSize.Height/2; 

    drawing.DrawString(text, font, shadowBrush, x + shadowOffset.Width, y + shadowOffset.Height); // <-- Here 
    drawing.DrawString(text, font, textBrush, x, y); 

    drawing.Save(); 

    textBrush.Dispose(); 
    drawing.Dispose(); 

    return img; 
}