Examples of ae.java.awt.peer.ComponentPeer

ae.java.awt.peer.ComponentPeer
The peer interfaces are intended only for use in porting the AWT. They are not intended for use by application developers, and developers should not implement peers nor invoke any of the peer methods directly on the peer instances.

     * @see       Container#validate
     * @since     JDK1.0
     */
    public void validate() {
        synchronized (getTreeLock()) {
            ComponentPeer peer = this.peer;
            boolean wasValid = isValid();
            if (!wasValid && peer != null) {
                Font newfont = getFont();
                Font oldfont = peerFont;
                if (newfont != oldfont && (oldfont == null
                                           || !oldfont.equals(newfont))) {
                    peer.setFont(newfont);
                    peerFont = newfont;
                }
                peer.layout();
            }
            valid = true;
            if (!wasValid) {
                mixOnValidating();
            }

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                g.setClip(0, 0, width, height);
            }
            g.setFont(getFont());
            return g;
        } else {
            ComponentPeer peer = this.peer;
            return (peer != null) ? peer.getGraphics() : null;
        }
    }

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            return (peer != null) ? peer.getGraphics() : null;
        }
    }


    final Graphics getGraphics_NoClientCode() {
        ComponentPeer peer = this.peer;
        if (peer instanceof LightweightPeer) {
            // This is for a lightweight component, need to
            // translate coordinate spaces and clip relative
            // to the parent.
            Container parent = this.parent;
            if (parent == null) return null;
            Graphics g = parent.getGraphics_NoClientCode();
            if (g == null) return null;
            if (g instanceof ConstrainableGraphics) {
                ((ConstrainableGraphics) g).constrain(x, y, width, height);
            } else {
                g.translate(x,y);
                g.setClip(0, 0, width, height);
            }
            g.setFont(getFont_NoClientCode());
            return g;
        } else {
            return (peer != null) ? peer.getGraphics() : null;
        }
    }

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        if (peer instanceof LightweightPeer) {
            Container nativeContainer = getNativeContainer();


            if (nativeContainer == null) return;


            ComponentPeer cPeer = nativeContainer.getPeer();


            if (cPeer != null) {
                cPeer.updateCursorImmediately();
            }
        } else if (peer != null) {
            peer.updateCursorImmediately();
        }
    }

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     */
    void printHeavyweightComponents(Graphics g) {
    }


    private Insets getInsets_NoClientCode() {
        ComponentPeer peer = this.peer;
        if (peer instanceof ContainerPeer) {
            return (Insets)((ContainerPeer)peer).insets().clone();
        }
        return new Insets(0, 0, 0, 0);
    }

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     * @param     producer  the image producer
     * @return    the image produced
     * @since     JDK1.0
     */
    public Image createImage(ImageProducer producer) {
        ComponentPeer peer = this.peer;
        if ((peer != null) && ! (peer instanceof LightweightPeer)) {
            return peer.createImage(producer);
        }
        return getToolkit().createImage(producer);
    }

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     * @see #isDisplayable
     * @see GraphicsEnvironment#isHeadless
     * @since     JDK1.0
     */
    public Image createImage(int width, int height) {
        ComponentPeer peer = this.peer;
        if (peer instanceof LightweightPeer) {
            if (parent != null) { return parent.createImage(width, height); }
            else { return null;}
        } else {
            return (peer != null) ? peer.createImage(width, height) : null;
        }
    }

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     * @see #isDisplayable
     * @see GraphicsEnvironment#isHeadless
     * @since     1.4
     */
    public VolatileImage createVolatileImage(int width, int height) {
        ComponentPeer peer = this.peer;
        if (peer instanceof LightweightPeer) {
            if (parent != null) {
                return parent.createVolatileImage(width, height);
            }
            else { return null;}
        } else {
            return (peer != null) ?
                peer.createVolatileImage(width, height) : null;
        }
    }

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     * @see       ae.java.awt.image.ImageObserver
     * @since     JDK1.0
     */
    public boolean prepareImage(Image image, int width, int height,
                                ImageObserver observer) {
        ComponentPeer peer = this.peer;
        if (peer instanceof LightweightPeer) {
            return (parent != null)
                ? parent.prepareImage(image, width, height, observer)
                : getToolkit().prepareImage(image, width, height, observer);
        } else {
            return (peer != null)
                ? peer.prepareImage(image, width, height, observer)
                : getToolkit().prepareImage(image, width, height, observer);
        }
    }

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     * @see      ae.java.awt.image.ImageObserver
     * @since    JDK1.0
     */
    public int checkImage(Image image, int width, int height,
                          ImageObserver observer) {
        ComponentPeer peer = this.peer;
        if (peer instanceof LightweightPeer) {
            return (parent != null)
                ? parent.checkImage(image, width, height, observer)
                : getToolkit().checkImage(image, width, height, observer);
        } else {
            return (peer != null)
                ? peer.checkImage(image, width, height, observer)
                : getToolkit().checkImage(image, width, height, observer);
        }
    }

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