/[projects]/miscJava/Test3/src/ImageServlet.java
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revision 610 by torben, Mon Feb 22 21:21:10 2010 UTC revision 611 by torben, Mon Feb 22 22:18:40 2010 UTC
# Line 1  Line 1 
1    
2    
3  import java.awt.Color;  import java.awt.Color;
4    import java.awt.Font;
5  import java.awt.Graphics2D;  import java.awt.Graphics2D;
6  import java.awt.RenderingHints;  import java.awt.RenderingHints;
7    import java.awt.font.LineMetrics;
8    import java.awt.geom.Rectangle2D;
9  import java.awt.image.BufferedImage;  import java.awt.image.BufferedImage;
10    import java.io.File;
11  import java.io.IOException;  import java.io.IOException;
12    import java.util.logging.Level;
13    import java.util.logging.Logger;
14    
15  import javax.imageio.ImageIO;  import javax.imageio.ImageIO;
16  import javax.servlet.ServletException;  import javax.servlet.ServletException;
# Line 17  import javax.servlet.http.HttpServletRes Line 23  import javax.servlet.http.HttpServletRes
23  // Image scaling :http://helpdesk.objects.com.au/java/how-do-i-scale-a-bufferedimage  // Image scaling :http://helpdesk.objects.com.au/java/how-do-i-scale-a-bufferedimage
24  public class ImageServlet extends HttpServlet {  public class ImageServlet extends HttpServlet {
25          private static final long serialVersionUID = 1L;          private static final long serialVersionUID = 1L;
26            
27            Logger logger = Logger.getLogger(ImageServlet.class.getName());
28                
29            protected Font loadFont() throws  IOException {
30                    File fontFile= new File( getServletContext().getRealPath("/Comic_Sans_MS.ttf") );
31                    logger.info( "Font:" + fontFile.getAbsolutePath() );
32    
33                    Font font = null;
34                    try {
35                            font = Font.createFont(Font.TRUETYPE_FONT, fontFile);
36                    } catch (Exception ex) {
37                            logger.log(Level.SEVERE, "Font load failed", ex);
38                    }
39                    
40                    
41                    return font.deriveFont(48.0f);
42            }
43    
44          protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {          protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
45                                    
# Line 30  public class ImageServlet extends HttpSe Line 52  public class ImageServlet extends HttpSe
52                  gfx.fillRect(0, 0, width, height); //Graphics2D has many various drawing methods                  gfx.fillRect(0, 0, width, height); //Graphics2D has many various drawing methods
53                  gfx.setColor( Color.blue );                  gfx.setColor( Color.blue );
54                  gfx.fillOval(10, 10, width-20, height-20);                  gfx.fillOval(10, 10, width-20, height-20);
55                    gfx.setColor( Color.black );
56                    
57                    /////////////////////
58                    ///Text draw section
59                    String text = "Text to draw";
60                    Font f = loadFont();
61                    gfx.setFont( f );              
62                    Rectangle2D bounds = f.getStringBounds(text, gfx.getFontRenderContext());
63                    int textX = (int) (width-bounds.getWidth())/2;
64                    
65                    
66                    logger.info("bWidth=" + bounds.getWidth() + ", bHeight=" + bounds.getHeight());
67                    
68                    
69                    gfx.drawString(text, textX, 210);
70                    
71                    
72                    
73                  gfx.dispose(); //dispose when we are done with drawing                  gfx.dispose(); //dispose when we are done with drawing
74                                    
75                                    
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