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Chapter 18 The java.awt Package |
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Chapter 18 The java.awt Package |
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This abstract class defines a device-independent interface to graphics. It specifies methods for doing line drawing, area filling, image painting, area copying, and graphics output clipping. Specific subclasses of Graphics are implemented for different platforms and different graphics output devices. A Graphics object cannot be created directly through a constructor--it must be obtained with the getGraphics() method of a Component or an Image, or copied from an existing Graphics object with create(). When a Graphics object is no longer needed, you should call dispose() to free up the window system resources it uses.
public abstract class Graphics extends Object {
// Protected Constructor
protected Graphics();
// Public Instance Methods
public abstract void clearRect(int x, int y, int width, int height);
public abstract void clipRect(int x, int y, int width, int height);
public abstract void copyArea(int x, int y, int width, int height, int dx, int dy);
public abstract Graphics create();
public Graphics create(int x, int y, int width, int height);
public abstract void dispose();
public void draw3DRect(int x, int y, int width, int height, boolean raised);
public abstract void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle);
public void drawBytes(byte[] data, int offset, int length, int x, int y);
public void drawChars(char[] data, int offset, int length, int x, int y);
public abstract boolean drawImage(Image img, int x, int y, ImageObserver observer);
public abstract boolean drawImage(Image img, int x, int y, int width, int height, ImageObserver observer);
public abstract boolean drawImage(Image img, int x, int y, Color bgcolor, ImageObserver observer);
public abstract boolean drawImage(Image img, int x, int y, int width, int height, Color bgcolor,
public abstract boolean drawImage'u'ImageObserver observer);
1.1 public abstract boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
1.1 public abstract boolean drawImage'u'int sx2, int sy2, ImageObserver observer);
1.1 public abstract boolean drawImage(Image img, int dx1, int dy1, int dx2, int dy2, int sx1, int sy1,
1.1 public abstract boolean drawImage'u'int sx2, int sy2, Color bgcolor, ImageObserver observer);
public abstract void drawLine(int x1, int y1, int x2, int y2);
public abstract void drawOval(int x, int y, int width, int height);
public abstract void drawPolygon(int[] xPoints, int[] yPoints, int nPoints);
public void drawPolygon(Polygon p);
1.1 public abstract void drawPolyline(int[] xPoints, int[] yPoints, int nPoints);
public void drawRect(int x, int y, int width, int height);
public abstract void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);
public abstract void drawString(String str, int x, int y);
public void fill3DRect(int x, int y, int width, int height, boolean raised);
public abstract void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle);
public abstract void fillOval(int x, int y, int width, int height);
public abstract void fillPolygon(int[] xPoints, int[] yPoints, int nPoints);
public void fillPolygon(Polygon p);
public abstract void fillRect(int x, int y, int width, int height);
public abstract void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);
public void finalize(); // Overrides Object
1.1 public abstract Shape getClip();
1.1 public abstract Rectangle getClipBounds();
# public Rectangle getClipRect();
public abstract Color getColor();
public abstract Font getFont();
public FontMetrics getFontMetrics();
public abstract FontMetrics getFontMetrics(Font f);
1.1 public abstract void setClip(int x, int y, int width, int height);
1.1 public abstract void setClip(Shape clip);
public abstract void setColor(Color c);
public abstract void setFont(Font font);
public abstract void setPaintMode();
public abstract void setXORMode(Color c1);
public String toString(); // Overrides Object
public abstract void translate(int x, int y);
}
Canvas.paint(), Component.paint(), Component.paintAll(), Component.print(), Component.printAll(), Component.update(), ComponentPeer.paint(), ComponentPeer.print(), Container.paint(), Container.paintComponents(), Container.print(), Container.printComponents(), PropertyEditor.paintValue(), PropertyEditorSupport.paintValue(), ScrollPane.printComponents()
Component.getGraphics(), ComponentPeer.getGraphics(), Graphics.create(), Image.getGraphics(), PrintJob.getGraphics()
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| java.awt.Frame (JDK 1.0) |  |
java.awt.GridBagConstraints (JDK 1.0) |
