Examples of java.awt.Graphics.dispose()

java.awt.Graphics.dispose()
Disposes of this graphics context and releases any system resources that it is using. A Graphics object cannot be used after disposehas been called.
When a Java program runs, a large number of Graphics objects can be created within a short time frame. Although the finalization process of the garbage collector also disposes of the same system resources, it is preferable to manually free the associated resources by calling this method rather than to rely on a finalization process which may not run to completion for a long period of time.
Graphics objects which are provided as arguments to the paint and update methods of components are automatically released by the system when those methods return. For efficiency, programmers should call dispose when finished using a Graphics object only if it was created directly from a component or another Graphics object. @see java.awt.Graphics#finalize @see java.awt.Component#paint @see java.awt.Component#update @see java.awt.Component#getGraphics @see java.awt.Graphics#create


    drawingArea.setImage(img);
    Graphics javaGraphics = img.getGraphics();    
   
    doSecondPageTest(javaGraphics);
    javaGraphics.dispose();


    currentPage = 2;
    drawingArea.repaint();
    drawingArea.revalidate();
  }

View Full Code Here


            paintChildrenWithBorder(gr, false);


            // reset the clip to full map
            // gr.setClip(0, 0, w, h);
            gr.dispose();
        } else if (Debug.debugging("mapbean")) {
            Debug.output("BufferedMapBean.rendering buffer.");
        }


        // Should be be clipping the graphics here? I'm not sure.

View Full Code Here

      } else 
    mygfx.drawLine(x, 3 * size.height/4, x, size.height);
        }


  if (labelFont != null)
      mygfx.dispose();
    }
}

View Full Code Here

  private static BufferedImage convert(Image im)
  {
    BufferedImage bi = new BufferedImage(im.getWidth(null), im.getHeight(null), BufferedImage.TYPE_INT_RGB);
    Graphics bg = bi.getGraphics();
    bg.drawImage(im, 0, 0, null);
    bg.dispose();
    return bi;
  }
}

View Full Code Here

            ? BufferedImage.TYPE_INT_ARGB : BufferedImage.TYPE_INT_RGB 
          );


      Graphics g = bi.createGraphics();
      g.drawImage(image, 0, 0, null);
      g.dispose();
    }


    return encode(bi, imageType);
  }

View Full Code Here

        }
      } catch (PrinterException ex) {
        // There should be no reason that print fails if print is done on a dummy image
        throw new RuntimeException(ex);
      }
      dummyGraphics.dispose();
    }
    return this.pageCount;
  }


  /**

View Full Code Here

          int width = image.getWidth() * height / image.getHeight();
          // Create a scaled image not bound to original image to let the original image being garbage collected 
          BufferedImage scaledImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
          Graphics g = scaledImage.getGraphics();
          g.drawImage(image.getScaledInstance(width, height, Image.SCALE_SMOOTH), 0, 0, null);
          g.dispose();
          return new ImageIcon(scaledImage);
        } else {
          return new ImageIcon(image);
        }
      }

View Full Code Here

            (float)pageFormat.getHeight());        
        
        printableComponent.print(g, pageFormat, page);
        
        pdfContent.addTemplate(pdfTemplate, 0, 0);
        g.dispose();
        
        if (page != pageCount - 1) {
          pdfDocument.newPage();
        }
      }

View Full Code Here

        if (this.pieceColor != null) {
          // Create a monochrome icon from plan icon  
          BufferedImage image = new BufferedImage(getIconWidth(), getIconHeight(), BufferedImage.TYPE_INT_ARGB);
          Graphics imageGraphics = image.getGraphics();
          super.paintIcon(c, imageGraphics, 0, 0);
          imageGraphics.dispose();
          
          final int colorRed   = this.pieceColor & 0xFF0000;
          final int colorGreen = this.pieceColor & 0xFF00;
          final int colorBlue  = this.pieceColor & 0xFF;
          setIcon(new ImageIcon(c.createImage(new FilteredImageSource(image.getSource (),

View Full Code Here


        checkLaunchingThreadIsntInterrupted();
        Graphics graphics = this.image.getGraphics();
        graphics.drawImage(offScreenImage.getScaledInstance(
            this.image.getWidth(), this.image.getHeight(), Image.SCALE_SMOOTH), 0, 0, null);
        graphics.dispose();
        checkLaunchingThreadIsntInterrupted();
        return this.image;
      } catch(InterruptedIOException ex) {
        this.homeComponent3D.endOffscreenImagesCreation();
        throw ex;

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.