Java 类java.awt.peer.LightweightPeer 实例源码

项目：OpenJSharp 文件：Component.java

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;
    }
}

项目：OpenJSharp 文件：Component.java

/**
 * Updates the cursor.  May not be invoked from the native
 * message pump.
 */
final void updateCursorImmediately() {
    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();
    }
}

项目：OpenJSharp 文件：DropTarget.java

/**
 * Notify the DropTarget that it has been associated with a Component
 *
 **********************************************************************
 * This method is usually called from java.awt.Component.addNotify() of
 * the Component associated with this DropTarget to notify the DropTarget
 * that a ComponentPeer has been associated with that Component.
 *
 * Calling this method, other than to notify this DropTarget of the
 * association of the ComponentPeer with the Component may result in
 * a malfunction of the DnD system.
 **********************************************************************
 * <P>
 * @param peer The Peer of the Component we are associated with!
 *
 */

public void addNotify(ComponentPeer peer) {
    if (peer == componentPeer) return;

    componentPeer = peer;

    for (Component c = component;
         c != null && peer instanceof LightweightPeer; c = c.getParent()) {
        peer = c.getPeer();
    }

    if (peer instanceof DropTargetPeer) {
        nativePeer = peer;
        ((DropTargetPeer)peer).addDropTarget(this);
    } else {
        nativePeer = null;
    }
}

项目：OpenJSharp 文件：Container.java

/**
 * This is called by lightweight components that want the containing
 * windowed parent to enable some kind of events on their behalf.
 * This is needed for events that are normally only dispatched to
 * windows to be accepted so that they can be forwarded downward to
 * the lightweight component that has enabled them.
 */
void proxyEnableEvents(long events) {
    if (peer instanceof LightweightPeer) {
        // this container is lightweight.... continue sending it
        // upward.
        if (parent != null) {
            parent.proxyEnableEvents(events);
        }
    } else {
        // This is a native container, so it needs to host
        // one of it's children.  If this function is called before
        // a peer has been created we don't yet have a dispatcher
        // because it has not yet been determined if this instance
        // is lightweight.
        if (dispatcher != null) {
            dispatcher.enableEvents(events);
        }
    }
}

项目：OpenJSharp 文件：Container.java

/**
 * Makes this Container displayable by connecting it to
 * a native screen resource.  Making a container displayable will
 * cause all of its children to be made displayable.
 * This method is called internally by the toolkit and should
 * not be called directly by programs.
 * @see Component#isDisplayable
 * @see #removeNotify
 */
public void addNotify() {
    synchronized (getTreeLock()) {
        // addNotify() on the children may cause proxy event enabling
        // on this instance, so we first call super.addNotify() and
        // possibly create an lightweight event dispatcher before calling
        // addNotify() on the children which may be lightweight.
        super.addNotify();
        if (! (peer instanceof LightweightPeer)) {
            dispatcher = new LightweightDispatcher(this);
        }

        // We shouldn't use iterator because of the Swing menu
        // implementation specifics:
        // the menu is being assigned as a child to JLayeredPane
        // instead of particular component so always affect
        // collection of component if menu is becoming shown or hidden.
        for (int i = 0; i < component.size(); i++) {
            component.get(i).addNotify();
        }
    }
}

项目：jdk8u-jdk 文件：Component.java

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;
    }
}

项目：jdk8u-jdk 文件：Component.java

/**
 * Updates the cursor.  May not be invoked from the native
 * message pump.
 */
final void updateCursorImmediately() {
    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();
    }
}

项目：jdk8u-jdk 文件：DropTarget.java

/**
 * Notify the DropTarget that it has been associated with a Component
 *
 **********************************************************************
 * This method is usually called from java.awt.Component.addNotify() of
 * the Component associated with this DropTarget to notify the DropTarget
 * that a ComponentPeer has been associated with that Component.
 *
 * Calling this method, other than to notify this DropTarget of the
 * association of the ComponentPeer with the Component may result in
 * a malfunction of the DnD system.
 **********************************************************************
 * <P>
 * @param peer The Peer of the Component we are associated with!
 *
 */

public void addNotify(ComponentPeer peer) {
    if (peer == componentPeer) return;

    componentPeer = peer;

    for (Component c = component;
         c != null && peer instanceof LightweightPeer; c = c.getParent()) {
        peer = c.getPeer();
    }

    if (peer instanceof DropTargetPeer) {
        nativePeer = peer;
        ((DropTargetPeer)peer).addDropTarget(this);
    } else {
        nativePeer = null;
    }
}

项目：jdk8u-jdk 文件：Container.java

/**
 * This is called by lightweight components that want the containing
 * windowed parent to enable some kind of events on their behalf.
 * This is needed for events that are normally only dispatched to
 * windows to be accepted so that they can be forwarded downward to
 * the lightweight component that has enabled them.
 */
void proxyEnableEvents(long events) {
    if (peer instanceof LightweightPeer) {
        // this container is lightweight.... continue sending it
        // upward.
        if (parent != null) {
            parent.proxyEnableEvents(events);
        }
    } else {
        // This is a native container, so it needs to host
        // one of it's children.  If this function is called before
        // a peer has been created we don't yet have a dispatcher
        // because it has not yet been determined if this instance
        // is lightweight.
        if (dispatcher != null) {
            dispatcher.enableEvents(events);
        }
    }
}

项目：jdk8u-jdk 文件：Container.java

/**
 * Makes this Container displayable by connecting it to
 * a native screen resource.  Making a container displayable will
 * cause all of its children to be made displayable.
 * This method is called internally by the toolkit and should
 * not be called directly by programs.
 * @see Component#isDisplayable
 * @see #removeNotify
 */
public void addNotify() {
    synchronized (getTreeLock()) {
        // addNotify() on the children may cause proxy event enabling
        // on this instance, so we first call super.addNotify() and
        // possibly create an lightweight event dispatcher before calling
        // addNotify() on the children which may be lightweight.
        super.addNotify();
        if (! (peer instanceof LightweightPeer)) {
            dispatcher = new LightweightDispatcher(this);
        }

        // We shouldn't use iterator because of the Swing menu
        // implementation specifics:
        // the menu is being assigned as a child to JLayeredPane
        // instead of particular component so always affect
        // collection of component if menu is becoming shown or hidden.
        for (int i = 0; i < component.size(); i++) {
            component.get(i).addNotify();
        }
    }
}

项目：openjdk-jdk10 文件：Component.java

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;
    }
}

项目：openjdk-jdk10 文件：Container.java

/**
 * Makes this Container displayable by connecting it to
 * a native screen resource.  Making a container displayable will
 * cause all of its children to be made displayable.
 * This method is called internally by the toolkit and should
 * not be called directly by programs.
 * @see Component#isDisplayable
 * @see #removeNotify
 */
public void addNotify() {
    synchronized (getTreeLock()) {
        // addNotify() on the children may cause proxy event enabling
        // on this instance, so we first call super.addNotify() and
        // possibly create an lightweight event dispatcher before calling
        // addNotify() on the children which may be lightweight.
        super.addNotify();
        if (! (peer instanceof LightweightPeer)) {
            dispatcher = new LightweightDispatcher(this);
        }

        // We shouldn't use iterator because of the Swing menu
        // implementation specifics:
        // the menu is being assigned as a child to JLayeredPane
        // instead of particular component so always affect
        // collection of component if menu is becoming shown or hidden.
        for (int i = 0; i < component.size(); i++) {
            component.get(i).addNotify();
        }
    }
}

项目：openjdk-jdk10 文件：Container.java

/**
 * This is called by lightweight components that want the containing
 * windowed parent to enable some kind of events on their behalf.
 * This is needed for events that are normally only dispatched to
 * windows to be accepted so that they can be forwarded downward to
 * the lightweight component that has enabled them.
 */
void proxyEnableEvents(long events) {
    if (peer instanceof LightweightPeer) {
        // this container is lightweight.... continue sending it
        // upward.
        if (parent != null) {
            parent.proxyEnableEvents(events);
        }
    } else {
        // This is a native container, so it needs to host
        // one of it's children.  If this function is called before
        // a peer has been created we don't yet have a dispatcher
        // because it has not yet been determined if this instance
        // is lightweight.
        if (dispatcher != null) {
            dispatcher.enableEvents(events);
        }
    }
}

项目：openjdk-jdk10 文件：DropTarget.java

/**
 * Notify the DropTarget that it has been associated with a Component
 *
 **********************************************************************
 * This method is usually called from java.awt.Component.addNotify() of
 * the Component associated with this DropTarget to notify the DropTarget
 * that a ComponentPeer has been associated with that Component.
 *
 * Calling this method, other than to notify this DropTarget of the
 * association of the ComponentPeer with the Component may result in
 * a malfunction of the DnD system.
 **********************************************************************
 */
public void addNotify() {
    final ComponentAccessor acc = AWTAccessor.getComponentAccessor();
    ComponentPeer peer = acc.getPeer(component);
    if (peer == null || peer == componentPeer) {
        return;
    }

    componentPeer = peer;


    for (Component c = component;
         c != null && peer instanceof LightweightPeer; c = c.getParent()) {
        peer = acc.getPeer(c);
    }

    if (peer instanceof DropTargetPeer) {
        nativePeer = (DropTargetPeer) peer;
        ((DropTargetPeer)peer).addDropTarget(this);
    } else {
        nativePeer = null;
    }
}

项目：OpenJSharp 文件：KeyboardFocusManager.java

static Component getHeavyweight(Component comp) {
    if (comp == null || comp.getPeer() == null) {
        return null;
    } else if (comp.getPeer() instanceof LightweightPeer) {
        return comp.getNativeContainer();
    } else {
        return comp;
    }
}

项目：OpenJSharp 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    comp.validate();
    if (comp.peer instanceof LightweightPeer) {
        comp.lightweightPaint(cg);
    } else {
        comp.peer.paint(cg);
    }
}

项目：OpenJSharp 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    comp.validate();
    if (comp.peer instanceof LightweightPeer) {
        comp.lightweightPrint(cg);
    } else {
        comp.peer.print(cg);
    }
}

项目：OpenJSharp 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    if (comp.peer instanceof LightweightPeer) {
        comp.paintHeavyweightComponents(cg);
    } else {
        comp.paintAll(cg);
    }
}

项目：OpenJSharp 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    if (comp.peer instanceof LightweightPeer) {
        comp.printHeavyweightComponents(cg);
    } else {
        comp.printAll(cg);
    }
}

项目：OpenJSharp 文件：Component.java

/**
 * Gets the instance of <code>ColorModel</code> used to display
 * the component on the output device.
 * @return the color model used by this component
 * @see java.awt.image.ColorModel
 * @see java.awt.peer.ComponentPeer#getColorModel()
 * @see Toolkit#getColorModel()
 * @since JDK1.0
 */
public ColorModel getColorModel() {
    ComponentPeer peer = this.peer;
    if ((peer != null) && ! (peer instanceof LightweightPeer)) {
        return peer.getColorModel();
    } else if (GraphicsEnvironment.isHeadless()) {
        return ColorModel.getRGBdefault();
    } // else
    return getToolkit().getColorModel();
}

项目：OpenJSharp 文件：Component.java

private void repaintParentIfNeeded(int oldX, int oldY, int oldWidth,
                                   int oldHeight)
{
    if (parent != null && peer instanceof LightweightPeer && isShowing()) {
        // Have the parent redraw the area this component occupied.
        parent.repaint(oldX, oldY, oldWidth, oldHeight);
        // Have the parent redraw the area this component *now* occupies.
        repaint();
    }
}

项目：OpenJSharp 文件：Component.java

private void reshapeNativePeer(int x, int y, int width, int height, int op) {
    // native peer might be offset by more than direct
    // parent since parent might be lightweight.
    int nativeX = x;
    int nativeY = y;
    for (Component c = parent;
         (c != null) && (c.peer instanceof LightweightPeer);
         c = c.parent)
    {
        nativeX += c.x;
        nativeY += c.y;
    }
    peer.setBounds(nativeX, nativeY, width, height, op);
}

项目：OpenJSharp 文件：Component.java

/**
 * Repaints the specified rectangle of this component within
 * <code>tm</code> milliseconds.
 * <p>
 * If this component is a lightweight component, this method causes
 * a call to this component's <code>paint</code> method.
 * Otherwise, this method causes a call to this component's
 * <code>update</code> method.
 * <p>
 * <b>Note</b>: For more information on the paint mechanisms utilitized
 * by AWT and Swing, including information on how to write the most
 * efficient painting code, see
 * <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
 *
 * @param     tm   maximum time in milliseconds before update
 * @param     x    the <i>x</i> coordinate
 * @param     y    the <i>y</i> coordinate
 * @param     width    the width
 * @param     height   the height
 * @see       #update(Graphics)
 * @since     JDK1.0
 */
public void repaint(long tm, int x, int y, int width, int height) {
    if (this.peer instanceof LightweightPeer) {
        // Needs to be translated to parent coordinates since
        // a parent native container provides the actual repaint
        // services.  Additionally, the request is restricted to
        // the bounds of the component.
        if (parent != null) {
            if (x < 0) {
                width += x;
                x = 0;
            }
            if (y < 0) {
                height += y;
                y = 0;
            }

            int pwidth = (width > this.width) ? this.width : width;
            int pheight = (height > this.height) ? this.height : height;

            if (pwidth <= 0 || pheight <= 0) {
                return;
            }

            int px = this.x + x;
            int py = this.y + y;
            parent.repaint(tm, px, py, pwidth, pheight);
        }
    } else {
        if (isVisible() && (this.peer != null) &&
            (width > 0) && (height > 0)) {
            PaintEvent e = new PaintEvent(this, PaintEvent.UPDATE,
                                          new Rectangle(x, y, width, height));
            SunToolkit.postEvent(SunToolkit.targetToAppContext(this), e);
        }
    }
}

项目：OpenJSharp 文件：Component.java

/**
 * Creates an image from the specified image producer.
 * @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);
}

项目：OpenJSharp 文件：Component.java

/**
 * Enables the events defined by the specified event mask parameter
 * to be delivered to this component.
 * <p>
 * Event types are automatically enabled when a listener for
 * that event type is added to the component.
 * <p>
 * This method only needs to be invoked by subclasses of
 * <code>Component</code> which desire to have the specified event
 * types delivered to <code>processEvent</code> regardless of whether
 * or not a listener is registered.
 * @param      eventsToEnable   the event mask defining the event types
 * @see        #processEvent
 * @see        #disableEvents
 * @see        AWTEvent
 * @since      JDK1.1
 */
protected final void enableEvents(long eventsToEnable) {
    long notifyAncestors = 0;
    synchronized (this) {
        if ((eventsToEnable & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
            hierarchyListener == null &&
            (eventMask & AWTEvent.HIERARCHY_EVENT_MASK) == 0) {
            notifyAncestors |= AWTEvent.HIERARCHY_EVENT_MASK;
        }
        if ((eventsToEnable & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 &&
            hierarchyBoundsListener == null &&
            (eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) == 0) {
            notifyAncestors |= AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK;
        }
        eventMask |= eventsToEnable;
        newEventsOnly = true;
    }

    // if this is a lightweight component, enable mouse events
    // in the native container.
    if (peer instanceof LightweightPeer) {
        parent.proxyEnableEvents(eventMask);
    }
    if (notifyAncestors != 0) {
        synchronized (getTreeLock()) {
            adjustListeningChildrenOnParent(notifyAncestors, 1);
        }
    }
}

项目：OpenJSharp 文件：Component.java

final Container getNativeContainer() {
    Container p = getContainer();
    while (p != null && p.peer instanceof LightweightPeer) {
        p = p.getContainer();
    }
    return p;
}

项目：OpenJSharp 文件：Container.java

/**
 * Returns closest heavyweight component to this container. If this container is heavyweight
 * returns this.
 * @since 1.5
 */
Container getHeavyweightContainer() {
    checkTreeLock();
    if (peer != null && !(peer instanceof LightweightPeer)) {
        return this;
    } else {
        return getNativeContainer();
    }
}

项目：OpenJSharp 文件：BasicSplitPaneUI.java

/**
 * Should be messaged before the dragging session starts, resets
 * lastDragLocation and dividerSize.
 */
protected void startDragging() {
    Component       leftC = splitPane.getLeftComponent();
    Component       rightC = splitPane.getRightComponent();
    ComponentPeer   cPeer;

    beginDragDividerLocation = getDividerLocation(splitPane);
    draggingHW = false;
    if(leftC != null && (cPeer = leftC.getPeer()) != null &&
       !(cPeer instanceof LightweightPeer)) {
        draggingHW = true;
    } else if(rightC != null && (cPeer = rightC.getPeer()) != null
              && !(cPeer instanceof LightweightPeer)) {
        draggingHW = true;
    }
    if(orientation == JSplitPane.HORIZONTAL_SPLIT) {
        setLastDragLocation(divider.getBounds().x);
        dividerSize = divider.getSize().width;
        if(!isContinuousLayout() && draggingHW) {
            nonContinuousLayoutDivider.setBounds
                    (getLastDragLocation(), 0, dividerSize,
                     splitPane.getHeight());
                  addHeavyweightDivider();
        }
    } else {
        setLastDragLocation(divider.getBounds().y);
        dividerSize = divider.getSize().height;
        if(!isContinuousLayout() && draggingHW) {
            nonContinuousLayoutDivider.setBounds
                    (0, getLastDragLocation(), splitPane.getWidth(),
                     dividerSize);
                  addHeavyweightDivider();
        }
    }
}

项目：jdk8u-jdk 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    comp.validate();
    if (comp.peer instanceof LightweightPeer) {
        comp.lightweightPaint(cg);
    } else {
        comp.peer.paint(cg);
    }
}

项目：jdk8u-jdk 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    comp.validate();
    if (comp.peer instanceof LightweightPeer) {
        comp.lightweightPrint(cg);
    } else {
        comp.peer.print(cg);
    }
}

项目：jdk8u-jdk 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    if (comp.peer instanceof LightweightPeer) {
        comp.paintHeavyweightComponents(cg);
    } else {
        comp.paintAll(cg);
    }
}

项目：jdk8u-jdk 文件：GraphicsCallback.java

public void run(Component comp, Graphics cg) {
    if (comp.peer instanceof LightweightPeer) {
        comp.printHeavyweightComponents(cg);
    } else {
        comp.printAll(cg);
    }
}

项目：jdk8u-jdk 文件：Component.java

/**
 * Gets the instance of <code>ColorModel</code> used to display
 * the component on the output device.
 * @return the color model used by this component
 * @see java.awt.image.ColorModel
 * @see java.awt.peer.ComponentPeer#getColorModel()
 * @see Toolkit#getColorModel()
 * @since JDK1.0
 */
public ColorModel getColorModel() {
    ComponentPeer peer = this.peer;
    if ((peer != null) && ! (peer instanceof LightweightPeer)) {
        return peer.getColorModel();
    } else if (GraphicsEnvironment.isHeadless()) {
        return ColorModel.getRGBdefault();
    } // else
    return getToolkit().getColorModel();
}

项目：jdk8u-jdk 文件：Component.java

private void reshapeNativePeer(int x, int y, int width, int height, int op) {
    // native peer might be offset by more than direct
    // parent since parent might be lightweight.
    int nativeX = x;
    int nativeY = y;
    for (Component c = parent;
         (c != null) && (c.peer instanceof LightweightPeer);
         c = c.parent)
    {
        nativeX += c.x;
        nativeY += c.y;
    }
    peer.setBounds(nativeX, nativeY, width, height, op);
}

项目：jdk8u-jdk 文件：Component.java

/**
 * Repaints the specified rectangle of this component within
 * <code>tm</code> milliseconds.
 * <p>
 * If this component is a lightweight component, this method causes
 * a call to this component's <code>paint</code> method.
 * Otherwise, this method causes a call to this component's
 * <code>update</code> method.
 * <p>
 * <b>Note</b>: For more information on the paint mechanisms utilitized
 * by AWT and Swing, including information on how to write the most
 * efficient painting code, see
 * <a href="http://www.oracle.com/technetwork/java/painting-140037.html">Painting in AWT and Swing</a>.
 *
 * @param     tm   maximum time in milliseconds before update
 * @param     x    the <i>x</i> coordinate
 * @param     y    the <i>y</i> coordinate
 * @param     width    the width
 * @param     height   the height
 * @see       #update(Graphics)
 * @since     JDK1.0
 */
public void repaint(long tm, int x, int y, int width, int height) {
    if (this.peer instanceof LightweightPeer) {
        // Needs to be translated to parent coordinates since
        // a parent native container provides the actual repaint
        // services.  Additionally, the request is restricted to
        // the bounds of the component.
        if (parent != null) {
            if (x < 0) {
                width += x;
                x = 0;
            }
            if (y < 0) {
                height += y;
                y = 0;
            }

            int pwidth = (width > this.width) ? this.width : width;
            int pheight = (height > this.height) ? this.height : height;

            if (pwidth <= 0 || pheight <= 0) {
                return;
            }

            int px = this.x + x;
            int py = this.y + y;
            parent.repaint(tm, px, py, pwidth, pheight);
        }
    } else {
        if (isVisible() && (this.peer != null) &&
            (width > 0) && (height > 0)) {
            PaintEvent e = new PaintEvent(this, PaintEvent.UPDATE,
                                          new Rectangle(x, y, width, height));
            SunToolkit.postEvent(SunToolkit.targetToAppContext(this), e);
        }
    }
}

项目：openjdk-jdk10 文件：Container.java

/**
 * Returns closest heavyweight component to this container. If this container is heavyweight
 * returns this.
 * @since 1.5
 */
Container getHeavyweightContainer() {
    checkTreeLock();
    if (peer != null && !(peer instanceof LightweightPeer)) {
        return this;
    } else {
        return getNativeContainer();
    }
}

项目：jdk8u-jdk 文件：Component.java

/**
 * Enables the events defined by the specified event mask parameter
 * to be delivered to this component.
 * <p>
 * Event types are automatically enabled when a listener for
 * that event type is added to the component.
 * <p>
 * This method only needs to be invoked by subclasses of
 * <code>Component</code> which desire to have the specified event
 * types delivered to <code>processEvent</code> regardless of whether
 * or not a listener is registered.
 * @param      eventsToEnable   the event mask defining the event types
 * @see        #processEvent
 * @see        #disableEvents
 * @see        AWTEvent
 * @since      JDK1.1
 */
protected final void enableEvents(long eventsToEnable) {
    long notifyAncestors = 0;
    synchronized (this) {
        if ((eventsToEnable & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
            hierarchyListener == null &&
            (eventMask & AWTEvent.HIERARCHY_EVENT_MASK) == 0) {
            notifyAncestors |= AWTEvent.HIERARCHY_EVENT_MASK;
        }
        if ((eventsToEnable & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 &&
            hierarchyBoundsListener == null &&
            (eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) == 0) {
            notifyAncestors |= AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK;
        }
        eventMask |= eventsToEnable;
        newEventsOnly = true;
    }

    // if this is a lightweight component, enable mouse events
    // in the native container.
    if (peer instanceof LightweightPeer) {
        parent.proxyEnableEvents(eventMask);
    }
    if (notifyAncestors != 0) {
        synchronized (getTreeLock()) {
            adjustListeningChildrenOnParent(notifyAncestors, 1);
        }
    }
}

项目：jdk8u-jdk 文件：Component.java

final Container getNativeContainer() {
    Container p = getContainer();
    while (p != null && p.peer instanceof LightweightPeer) {
        p = p.getContainer();
    }
    return p;
}

项目：jdk8u-jdk 文件：Container.java

/**
 * Returns closest heavyweight component to this container. If this container is heavyweight
 * returns this.
 * @since 1.5
 */
Container getHeavyweightContainer() {
    checkTreeLock();
    if (peer != null && !(peer instanceof LightweightPeer)) {
        return this;
    } else {
        return getNativeContainer();
    }
}

项目：jdk8u-jdk 文件：BasicSplitPaneUI.java

/**
 * Should be messaged before the dragging session starts, resets
 * lastDragLocation and dividerSize.
 */
protected void startDragging() {
    Component       leftC = splitPane.getLeftComponent();
    Component       rightC = splitPane.getRightComponent();
    ComponentPeer   cPeer;

    beginDragDividerLocation = getDividerLocation(splitPane);
    draggingHW = false;
    if(leftC != null && (cPeer = leftC.getPeer()) != null &&
       !(cPeer instanceof LightweightPeer)) {
        draggingHW = true;
    } else if(rightC != null && (cPeer = rightC.getPeer()) != null
              && !(cPeer instanceof LightweightPeer)) {
        draggingHW = true;
    }
    if(orientation == JSplitPane.HORIZONTAL_SPLIT) {
        setLastDragLocation(divider.getBounds().x);
        dividerSize = divider.getSize().width;
        if(!isContinuousLayout() && draggingHW) {
            nonContinuousLayoutDivider.setBounds
                    (getLastDragLocation(), 0, dividerSize,
                     splitPane.getHeight());
                  addHeavyweightDivider();
        }
    } else {
        setLastDragLocation(divider.getBounds().y);
        dividerSize = divider.getSize().height;
        if(!isContinuousLayout() && draggingHW) {
            nonContinuousLayoutDivider.setBounds
                    (0, getLastDragLocation(), splitPane.getWidth(),
                     dividerSize);
                  addHeavyweightDivider();
        }
    }
}