Java Component.getPeer方法代码示例

import java.awt.Component; //导入方法依赖的package包/类
private void addTree(Collection order, Set set, Container cont) {
    for (int i = 0; i < cont.getComponentCount(); i++) {
        Component comp = cont.getComponent(i);
        ComponentPeer peer = comp.getPeer();
        if (peer instanceof XComponentPeer) {
            Long window = Long.valueOf(((XComponentPeer)peer).getWindow());
            if (!set.contains(window)) {
                set.add(window);
                order.add(window);
            }
        } else if (comp instanceof Container) {
            // It is lightweight container, it might contain heavyweight components attached to this
            // peer
            addTree(order, set, (Container)comp);
        }
    }
}
 

import java.awt.Component; //导入方法依赖的package包/类
@SuppressWarnings("deprecation")
public static boolean shouldFocusOnClick(Component component) {
    boolean acceptFocusOnClick = false;

    // A component is generally allowed to accept focus on click
    // if its peer is focusable. There're some exceptions though.


    // CANVAS & SCROLLBAR accept focus on click
    if (component instanceof Canvas ||
        component instanceof Scrollbar)
    {
        acceptFocusOnClick = true;

    // PANEL, empty only, accepts focus on click
    } else if (component instanceof Panel) {
        acceptFocusOnClick = (((Panel)component).getComponentCount() == 0);


    // Other components
    } else {
        ComponentPeer peer = (component != null ? component.getPeer() : null);
        acceptFocusOnClick = (peer != null ? peer.isFocusable() : false);
    }
    return acceptFocusOnClick &&
           AWTAccessor.getComponentAccessor().canBeFocusOwner(component);
}
 

import java.awt.Component; //导入方法依赖的package包/类
@SuppressWarnings("deprecation")
public static boolean deliverFocus(Component lightweightChild,
                                   Component target,
                                   boolean temporary,
                                   boolean focusedWindowChangeAllowed,
                                   long time,
                                   CausedFocusEvent.Cause cause,
                                   Component currentFocusOwner) // provided by the descendant peers
{
    if (lightweightChild == null) {
        lightweightChild = target;
    }

    Component currentOwner = currentFocusOwner;
    if (currentOwner != null && currentOwner.getPeer() == null) {
        currentOwner = null;
    }
    if (currentOwner != null) {
        FocusEvent fl = new CausedFocusEvent(currentOwner, FocusEvent.FOCUS_LOST,
                                             false, lightweightChild, cause);

        if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
            focusLog.finer("Posting focus event: " + fl);
        }
        SunToolkit.postEvent(SunToolkit.targetToAppContext(currentOwner), fl);
    }

    FocusEvent fg = new CausedFocusEvent(lightweightChild, FocusEvent.FOCUS_GAINED,
                                         false, currentOwner, cause);

    if (focusLog.isLoggable(PlatformLogger.Level.FINER)) {
        focusLog.finer("Posting focus event: " + fg);
    }
    SunToolkit.postEvent(SunToolkit.targetToAppContext(lightweightChild), fg);
    return true;
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * Returns true if the component has heavyweight children.
 *
 * @param comp component to check for hw children
 * @return true if Component has heavyweight children
 */
private static boolean hasHWChildren(Component comp) {
    if (comp instanceof Container) {
        for (Component c : ((Container)comp).getComponents()) {
            if (c.getPeer() instanceof WComponentPeer || hasHWChildren(c)) {
                return true;
            }
        }
    }
    return false;
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * Calls <code>Component.paint(Graphics)</code> with given Graphics.
 */
protected void paintComponent(Component comp, Graphics g) {
    if (comp != null) {
        final XComponentPeer peer = (XComponentPeer) comp.getPeer();
        if (peer != null) {
            peer.paintPeer(g);
        }
        super.paintComponent(comp, g);
    }
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * @see java.awt.peer.ComponentPeer
 */
public void setEnabled(final boolean value) {
    if (enableLog.isLoggable(PlatformLogger.Level.FINE)) {
        enableLog.fine("{0}ing {1}", (value ? "Enabl" : "Disabl"), this);
    }
    boolean status = value;
    // If any of our heavyweight ancestors are disable, we should be too
    // See 6176875 for more information
    final Container cp = SunToolkit.getNativeContainer(target);
    if (cp != null) {
        status &= ((XComponentPeer) cp.getPeer()).isEnabled();
    }
    synchronized (getStateLock()) {
        if (enabled == status) {
            return;
        }
        enabled = status;
    }

    if (target instanceof Container) {
        final Component[] list = ((Container) target).getComponents();
        for (final Component child : list) {
            final ComponentPeer p = child.getPeer();
            if (p != null) {
                p.setEnabled(status && child.isEnabled());
            }
        }
    }
    repaint();
}
 

import java.awt.Component; //导入方法依赖的package包/类
/****** DropTargetPeer implementation ********************/

    public void addDropTarget(DropTarget dt) {
        Component comp = target;
        while(!(comp == null || comp instanceof Window)) {
            comp = comp.getParent();
        }

        if (comp instanceof Window) {
            XWindowPeer wpeer = (XWindowPeer)(comp.getPeer());
            if (wpeer != null) {
                wpeer.addDropTarget();
            }
        }
    }
 

import java.awt.Component; //导入方法依赖的package包/类
public void removeDropTarget(DropTarget dt) {
    Component comp = target;
    while(!(comp == null || comp instanceof Window)) {
        comp = comp.getParent();
    }

    if (comp instanceof Window) {
        XWindowPeer wpeer = (XWindowPeer)(comp.getPeer());
        if (wpeer != null) {
            wpeer.removeDropTarget();
        }
    }
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
     * Create a pbuffer-based SurfaceData object (or init the backbuffer
     * of an existing window if this is a double buffered GraphicsConfig)
     */
    protected SurfaceData initAcceleratedSurface() {
        SurfaceData sData = null;
        Component comp = vImg.getComponent();
        final ComponentPeer peer = (comp != null) ? comp.getPeer() : null;

        try {
            boolean createVSynced = false;
            boolean forceback = false;
            if (context instanceof Boolean) {
                forceback = ((Boolean)context).booleanValue();
                if (forceback && peer instanceof BackBufferCapsProvider) {
                    BackBufferCapsProvider provider =
                        (BackBufferCapsProvider)peer;
                    BufferCapabilities caps = provider.getBackBufferCaps();
                    if (caps instanceof ExtendedBufferCapabilities) {
                        ExtendedBufferCapabilities ebc =
                            (ExtendedBufferCapabilities)caps;
                        if (ebc.getVSync() == VSYNC_ON &&
                            ebc.getFlipContents() == COPIED)
                        {
                            createVSynced = true;
                            forceback = false;
                        }
                    }
                }
            }

            if (forceback) {
                // peer must be non-null in this case
                // TODO: modify parameter to delegate
                //                sData = CGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
            } else {
                CGLGraphicsConfig gc =
                    (CGLGraphicsConfig)vImg.getGraphicsConfig();
                ColorModel cm = gc.getColorModel(vImg.getTransparency());
                int type = vImg.getForcedAccelSurfaceType();
                // if acceleration type is forced (type != UNDEFINED) then
                // use the forced type, otherwise choose one based on caps
                if (type == OGLSurfaceData.UNDEFINED) {
                    type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
                        OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
                }
                if (createVSynced) {
                    // TODO: modify parameter to delegate
//                  sData = CGLSurfaceData.createData(peer, vImg, type);
                } else {
                    sData = CGLSurfaceData.createData(gc,
                                                      vImg.getWidth(),
                                                      vImg.getHeight(),
                                                      cm, vImg, type);
                }
            }
        } catch (NullPointerException ex) {
            sData = null;
        } catch (OutOfMemoryError er) {
            sData = null;
        }

        return sData;
    }
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * Create a pbuffer-based SurfaceData object (or init the backbuffer
 * of an existing window if this is a double buffered GraphicsConfig).
 */
protected SurfaceData initAcceleratedSurface() {
    SurfaceData sData;
    Component comp = vImg.getComponent();
    WComponentPeer peer =
        (comp != null) ? (WComponentPeer)comp.getPeer() : null;

    try {
        boolean forceback = false;
        if (context instanceof Boolean) {
            forceback = ((Boolean)context).booleanValue();
        }

        if (forceback) {
            // peer must be non-null in this case
            sData = D3DSurfaceData.createData(peer, vImg);
        } else {
            D3DGraphicsConfig gc =
                (D3DGraphicsConfig)vImg.getGraphicsConfig();
            ColorModel cm = gc.getColorModel(vImg.getTransparency());
            int type = vImg.getForcedAccelSurfaceType();
            // if acceleration type is forced (type != UNDEFINED) then
            // use the forced type, otherwise use RT_TEXTURE
            if (type == UNDEFINED) {
                type = RT_TEXTURE;
            }
            sData = D3DSurfaceData.createData(gc,
                                              vImg.getWidth(),
                                              vImg.getHeight(),
                                              cm, vImg,
                                              type);
        }
    } catch (NullPointerException ex) {
        sData = null;
    } catch (OutOfMemoryError er) {
        sData = null;
    } catch (InvalidPipeException ipe) {
        sData = null;
    }

    return sData;
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * Create a pbuffer-based SurfaceData object (or init the backbuffer
 * of an existing window if this is a double buffered GraphicsConfig)
 */
protected SurfaceData initAcceleratedSurface() {
    SurfaceData sData;
    Component comp = vImg.getComponent();
    X11ComponentPeer peer =
        (comp != null) ? (X11ComponentPeer)comp.getPeer() : null;

    try {
        boolean createVSynced = false;
        boolean forceback = false;
        if (context instanceof Boolean) {
            forceback = ((Boolean)context).booleanValue();
            if (forceback && peer instanceof BackBufferCapsProvider) {
                BackBufferCapsProvider provider =
                    (BackBufferCapsProvider)peer;
                BufferCapabilities caps = provider.getBackBufferCaps();
                if (caps instanceof ExtendedBufferCapabilities) {
                    ExtendedBufferCapabilities ebc =
                        (ExtendedBufferCapabilities)caps;
                    if (ebc.getVSync() == VSYNC_ON &&
                        ebc.getFlipContents() == COPIED)
                    {
                        createVSynced = true;
                        forceback = false;
                    }
                }
            }
        }

        if (forceback) {
            // peer must be non-null in this case
            sData = GLXSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
        } else {
            GLXGraphicsConfig gc =
                (GLXGraphicsConfig)vImg.getGraphicsConfig();
            ColorModel cm = gc.getColorModel(vImg.getTransparency());
            int type = vImg.getForcedAccelSurfaceType();
            // if acceleration type is forced (type != UNDEFINED) then
            // use the forced type, otherwise choose one based on caps
            if (type == OGLSurfaceData.UNDEFINED) {
                type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
                    OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
            }
            if (createVSynced) {
                sData = GLXSurfaceData.createData(peer, vImg, type);
            } else {
                sData = GLXSurfaceData.createData(gc,
                                                  vImg.getWidth(),
                                                  vImg.getHeight(),
                                                  cm, vImg, type);
            }
        }
    } catch (NullPointerException ex) {
        sData = null;
    } catch (OutOfMemoryError er) {
        sData = null;
    }

    return sData;
}
 

import java.awt.Component; //导入方法依赖的package包/类
/**
 * Create a pbuffer-based SurfaceData object (or init the backbuffer
 * of an existing window if this is a double buffered GraphicsConfig).
 */
protected SurfaceData initAcceleratedSurface() {
    SurfaceData sData;
    Component comp = vImg.getComponent();
    WComponentPeer peer =
        (comp != null) ? (WComponentPeer)comp.getPeer() : null;

    try {
        boolean createVSynced = false;
        boolean forceback = false;
        if (context instanceof Boolean) {
            forceback = ((Boolean)context).booleanValue();
            if (forceback) {
                BufferCapabilities caps = peer.getBackBufferCaps();
                if (caps instanceof ExtendedBufferCapabilities) {
                    ExtendedBufferCapabilities ebc =
                        (ExtendedBufferCapabilities)caps;
                    if (ebc.getVSync() == VSYNC_ON &&
                        ebc.getFlipContents() == COPIED)
                    {
                        createVSynced = true;
                        forceback = false;
                    }
                }
            }
        }

        if (forceback) {
            // peer must be non-null in this case
            sData = WGLSurfaceData.createData(peer, vImg, FLIP_BACKBUFFER);
        } else {
            WGLGraphicsConfig gc =
                (WGLGraphicsConfig)vImg.getGraphicsConfig();
            ColorModel cm = gc.getColorModel(vImg.getTransparency());
            int type = vImg.getForcedAccelSurfaceType();
            // if acceleration type is forced (type != UNDEFINED) then
            // use the forced type, otherwise choose one based on caps
            if (type == OGLSurfaceData.UNDEFINED) {
                type = gc.isCapPresent(CAPS_EXT_FBOBJECT) ?
                    OGLSurfaceData.FBOBJECT : OGLSurfaceData.PBUFFER;
            }
            if (createVSynced) {
                sData = WGLSurfaceData.createData(peer, vImg, type);
            } else {
                sData = WGLSurfaceData.createData(gc,
                                                  vImg.getWidth(),
                                                  vImg.getHeight(),
                                                  cm, vImg, type);
            }
        }
    } catch (NullPointerException ex) {
        sData = null;
    } catch (OutOfMemoryError er) {
        sData = null;
    }

    return sData;
}