摘要:Visual C# 2005 - 如何利用程式碼產生多變化字體之倒影字
除了圖像之外，如果要針對文字做出繪圖變化，則利用 .Net Framework的 System.Drawing 命名空間中的 Graphics 與 Brush 類別最是簡便。接下來我們將介紹如何運用筆刷來產生帶有倒影效果的文字。
程式範例
圖表1
圖表 1 所示的程式範例示範如何利用 Graphics 類別的 DrawString 方法，產生帶有倒影效果的文字，程式碼如下所示：
SizeF textSize;Graphics g;
Brush myBackBrush = Brushes.Gray;
Brush myForeBrush = Brushes.Blue;
Font myFont = new Font("Times New Roman",
(float)this.nudFontSize.Value, FontStyle.Regular);
GraphicsState myState;
float xLocation, yLocation;
float textHeight;
g = picDemoArea.CreateGraphics();
g.Clear(Color.White);
textSize = g.MeasureString(this.txtShortText.Text, myFont);
xLocation = (picDemoArea.Width - textSize.Width) / 2;
yLocation = (picDemoArea.Height - textSize.Height) / 2;
g.TranslateTransform(xLocation, yLocation);
int lineAscent;
int lineSpacing;
float lineHeight;
lineAscent = myFont.FontFamily.GetCellAscent(myFont.Style);
lineSpacing = myFont.FontFamily.GetLineSpacing(myFont.Style);
lineHeight = myFont.GetHeight(g);
textHeight = lineHeight * lineAscent / lineSpacing;
// 產生正倒影文字。
//int lineDescent;
//lineDescent =
// myFont.FontFamily.GetCellDescent(myFont.Style);
//textHeight = lineHeight * (lineAscent + lineDescent) /
// lineSpacing;
myState = g.Save();
g.ScaleTransform(1,
g.DrawString(txtShortText.Text, myFont, myBackBrush, 0,
-textHeight);
g.Restore(myState);
g.DrawString(txtShortText.Text, myFont, myForeBrush, 0,
-textHeight);