/* * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.lwawt; import java.awt.*; import java.awt.event.*; import java.awt.image.BufferedImage; import java.awt.peer.*; import java.util.List; import javax.swing.*; import sun.awt.*; import sun.java2d.*; import sun.java2d.loops.Blit; import sun.java2d.loops.CompositeType; import sun.java2d.pipe.Region; import sun.util.logging.PlatformLogger; public class LWWindowPeer extends LWContainerPeer implements WindowPeer, FramePeer, DialogPeer, FullScreenCapable { public static enum PeerType { SIMPLEWINDOW, FRAME, DIALOG, EMBEDDEDFRAME } private static final PlatformLogger focusLog = PlatformLogger.getLogger("sun.lwawt.focus.LWWindowPeer"); private PlatformWindow platformWindow; // Window bounds reported by the native system (as opposed to // regular bounds inherited from LWComponentPeer which are // requested by user and may haven't been applied yet because // of asynchronous requests to the windowing system) private int sysX; private int sysY; private int sysW; private int sysH; private static final int MINIMUM_WIDTH = 1; private static final int MINIMUM_HEIGHT = 1; private Insets insets = new Insets(0, 0, 0, 0); private GraphicsDevice graphicsDevice; private GraphicsConfiguration graphicsConfig; private SurfaceData surfaceData; private final Object surfaceDataLock = new Object(); private int backBufferCount; private BufferCapabilities backBufferCaps; // The back buffer is used for two purposes: // 1. To render all the lightweight peers // 2. To provide user with a BufferStrategy // Need to check if a single back buffer can be used for both // TODO: VolatileImage // private VolatileImage backBuffer; private volatile BufferedImage backBuffer; private volatile int windowState = Frame.NORMAL; // check that the mouse is over the window private volatile boolean isMouseOver = false; // A peer where the last mouse event came to. Used by cursor manager to // find the component under cursor private static volatile LWComponentPeer lastCommonMouseEventPeer = null; // A peer where the last mouse event came to. Used to generate // MOUSE_ENTERED/EXITED notifications private volatile LWComponentPeer lastMouseEventPeer; // Peers where all dragged/released events should come to, // depending on what mouse button is being dragged according to Cocoa private static LWComponentPeer mouseDownTarget[] = new LWComponentPeer[3]; // A bitmask that indicates what mouse buttons produce MOUSE_CLICKED events // on MOUSE_RELEASE. Click events are only generated if there were no drag // events between MOUSE_PRESSED and MOUSE_RELEASED for particular button private static int mouseClickButtons = 0; private volatile boolean isOpaque = true; private static final Font DEFAULT_FONT = new Font("Lucida Grande", Font.PLAIN, 13); private static LWWindowPeer grabbingWindow; private volatile boolean skipNextFocusChange; private static final Color nonOpaqueBackground = new Color(0, 0, 0, 0); private volatile boolean textured; /** * Current modal blocker or null. * * Synchronization: peerTreeLock. */ private LWWindowPeer blocker; public LWWindowPeer(Window target, PlatformComponent platformComponent, PlatformWindow platformWindow) { super(target, platformComponent); this.platformWindow = platformWindow; Window owner = target.getOwner(); LWWindowPeer ownerPeer = (owner != null) ? (LWWindowPeer)owner.getPeer() : null; PlatformWindow ownerDelegate = (ownerPeer != null) ? ownerPeer.getPlatformWindow() : null; // The delegate.initialize() needs a non-null GC on X11. GraphicsConfiguration gc = getTarget().getGraphicsConfiguration(); synchronized (getStateLock()) { // graphicsConfig should be updated according to the real window // bounds when the window is shown, see 4868278 this.graphicsConfig = gc; } if (!target.isFontSet()) { target.setFont(DEFAULT_FONT); } if (!target.isBackgroundSet()) { target.setBackground(SystemColor.window); } else { // first we check if user provided alpha for background. This is // similar to what Apple's Java do. // Since JDK7 we should rely on setOpacity() only. // this.opacity = c.getAlpha(); } if (!target.isForegroundSet()) { target.setForeground(SystemColor.windowText); // we should not call setForeground because it will call a repaint // which the peer may not be ready to do yet. } platformWindow.initialize(target, this, ownerDelegate); } @Override void initializeImpl() { super.initializeImpl(); if (getTarget() instanceof Frame) { setTitle(((Frame) getTarget()).getTitle()); setState(((Frame) getTarget()).getExtendedState()); } else if (getTarget() instanceof Dialog) { setTitle(((Dialog) getTarget()).getTitle()); } setAlwaysOnTop(getTarget().isAlwaysOnTop()); updateMinimumSize(); final Shape shape = getTarget().getShape(); if (shape != null) { applyShape(Region.getInstance(shape, null)); } final float opacity = getTarget().getOpacity(); if (opacity < 1.0f) { setOpacity(opacity); } setOpaque(getTarget().isOpaque()); updateInsets(platformWindow.getInsets()); if (getSurfaceData() == null) { replaceSurfaceData(false); } } // Just a helper method public PlatformWindow getPlatformWindow() { return platformWindow; } @Override protected LWWindowPeer getWindowPeerOrSelf() { return this; } @Override protected void initializeContainerPeer() { // No-op as LWWindowPeer doesn't have any containerPeer } // ---- PEER METHODS ---- // @Override protected void disposeImpl() { SurfaceData oldData = getSurfaceData(); synchronized (surfaceDataLock){ surfaceData = null; } if (oldData != null) { oldData.invalidate(); } if (isGrabbing()) { ungrab(); } destroyBuffers(); platformWindow.dispose(); super.disposeImpl(); } @Override protected void setVisibleImpl(final boolean visible) { super.setVisibleImpl(visible); // TODO: update graphicsConfig, see 4868278 platformWindow.setVisible(visible); if (isSimpleWindow()) { LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer. getInstance(getAppContext()); if (visible) { if (!getTarget().isAutoRequestFocus()) { return; } else { requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION); } // Focus the owner in case this window is focused. } else if (manager.getCurrentFocusedWindow() == getTarget()) { // Transfer focus to the owner. LWWindowPeer owner = getOwnerFrameDialog(LWWindowPeer.this); if (owner != null) { owner.requestWindowFocus(CausedFocusEvent.Cause.ACTIVATION); } } } } @Override public GraphicsConfiguration getGraphicsConfiguration() { return graphicsConfig; } @Override public boolean updateGraphicsData(GraphicsConfiguration gc) { setGraphicsConfig(gc); return false; } protected final Graphics getOnscreenGraphics(Color fg, Color bg, Font f) { if (getSurfaceData() == null) { return null; } if (fg == null) { fg = SystemColor.windowText; } if (bg == null) { bg = SystemColor.window; } if (f == null) { f = DEFAULT_FONT; } return platformWindow.transformGraphics(new SunGraphics2D(getSurfaceData(), fg, bg, f)); } @Override public void createBuffers(int numBuffers, BufferCapabilities caps) throws AWTException { try { // Assume this method is never called with numBuffers <= 1, as 0 is // unsupported, and 1 corresponds to a SingleBufferStrategy which // doesn't depend on the peer. Screen is considered as a separate // "buffer", that's why numBuffers - 1 assert numBuffers > 1; replaceSurfaceData(numBuffers - 1, caps, false); } catch (InvalidPipeException z) { throw new AWTException(z.toString()); } } @Override public final Image getBackBuffer() { synchronized (getStateLock()) { return backBuffer; } } @Override public void flip(int x1, int y1, int x2, int y2, BufferCapabilities.FlipContents flipAction) { platformWindow.flip(x1, y1, x2, y2, flipAction); } @Override public final void destroyBuffers() { final Image oldBB = getBackBuffer(); synchronized (getStateLock()) { backBuffer = null; } if (oldBB != null) { oldBB.flush(); } } @Override public void setBounds(int x, int y, int w, int h, int op) { if ((op & SET_CLIENT_SIZE) != 0) { // SET_CLIENT_SIZE is only applicable to window peers, so handle it here // instead of pulling 'insets' field up to LWComponentPeer // no need to add insets since Window's notion of width and height includes insets. op &= ~SET_CLIENT_SIZE; op |= SET_SIZE; } if (w < MINIMUM_WIDTH) { w = MINIMUM_WIDTH; } if (h < MINIMUM_HEIGHT) { h = MINIMUM_HEIGHT; } // Don't post ComponentMoved/Resized and Paint events // until we've got a notification from the delegate setBounds(x, y, w, h, op, false, false); // Get updated bounds, so we don't have to handle 'op' here manually Rectangle r = getBounds(); platformWindow.setBounds(r.x, r.y, r.width, r.height); } @Override public Point getLocationOnScreen() { return platformWindow.getLocationOnScreen(); } /** * Overridden from LWContainerPeer to return the correct insets. * Insets are queried from the delegate and are kept up to date by * requiering when needed (i.e. when the window geometry is changed). */ @Override public Insets getInsets() { synchronized (getStateLock()) { return insets; } } @Override public FontMetrics getFontMetrics(Font f) { // TODO: check for "use platform metrics" settings return platformWindow.getFontMetrics(f); } @Override public void toFront() { platformWindow.toFront(); } @Override public void toBack() { platformWindow.toBack(); } @Override public void setZOrder(ComponentPeer above) { throw new RuntimeException("not implemented"); } @Override public void setAlwaysOnTop(boolean value) { platformWindow.setAlwaysOnTop(value); } @Override public void updateFocusableWindowState() { platformWindow.updateFocusableWindowState(); } @Override public void setModalBlocked(Dialog blocker, boolean blocked) { synchronized (getPeerTreeLock()) { this.blocker = blocked ? (LWWindowPeer)blocker.getPeer() : null; } platformWindow.setModalBlocked(blocked); } @Override public void updateMinimumSize() { Dimension d = null; if (getTarget().isMinimumSizeSet()) { d = getTarget().getMinimumSize(); } if (d == null) { d = new Dimension(MINIMUM_WIDTH, MINIMUM_HEIGHT); } platformWindow.setMinimumSize(d.width, d.height); } @Override public void updateIconImages() { getPlatformWindow().updateIconImages(); } @Override public void setOpacity(float opacity) { getPlatformWindow().setOpacity(opacity); repaintPeer(); } @Override public final void setOpaque(final boolean isOpaque) { if (this.isOpaque != isOpaque) { this.isOpaque = isOpaque; updateOpaque(); } } private void updateOpaque() { getPlatformWindow().setOpaque(!isTranslucent()); replaceSurfaceData(false); repaintPeer(); } @Override public void updateWindow() { } public final boolean isTextured() { return textured; } public final void setTextured(final boolean isTextured) { textured = isTextured; } public final boolean isTranslucent() { synchronized (getStateLock()) { /* * Textured window is a special case of translucent window. * The difference is only in nswindow background. So when we set * texture property our peer became fully translucent. It doesn't * fill background, create non opaque backbuffers and layer etc. */ return !isOpaque || isShaped() || isTextured(); } } @Override final void applyShapeImpl(final Region shape) { super.applyShapeImpl(shape); updateOpaque(); } @Override public void repositionSecurityWarning() { throw new RuntimeException("not implemented"); } // ---- FRAME PEER METHODS ---- // @Override // FramePeer and DialogPeer public void setTitle(String title) { platformWindow.setTitle(title == null ? "" : title); } @Override public void setMenuBar(MenuBar mb) { platformWindow.setMenuBar(mb); } @Override // FramePeer and DialogPeer public void setResizable(boolean resizable) { platformWindow.setResizable(resizable); } @Override public void setState(int state) { platformWindow.setWindowState(state); } @Override public int getState() { return windowState; } @Override public void setMaximizedBounds(Rectangle bounds) { // TODO: not implemented } @Override public void setBoundsPrivate(int x, int y, int width, int height) { setBounds(x, y, width, height, SET_BOUNDS | NO_EMBEDDED_CHECK); } @Override public Rectangle getBoundsPrivate() { throw new RuntimeException("not implemented"); } // ---- DIALOG PEER METHODS ---- // @Override public void blockWindows(List windows) { //TODO: LWX will probably need some collectJavaToplevels to speed this up for (Window w : windows) { WindowPeer wp = (WindowPeer)w.getPeer(); if (wp != null) { wp.setModalBlocked((Dialog)getTarget(), true); } } } // ---- PEER NOTIFICATIONS ---- // public void notifyIconify(boolean iconify) { //The toplevel target is Frame and states are applicable to it. //Otherwise, the target is Window and it don't have state property. //Hopefully, no such events are posted in the queue so consider the //target as Frame in all cases. // REMIND: should we send it anyway if the state not changed since last // time? WindowEvent iconifyEvent = new WindowEvent(getTarget(), iconify ? WindowEvent.WINDOW_ICONIFIED : WindowEvent.WINDOW_DEICONIFIED); postEvent(iconifyEvent); int newWindowState = iconify ? Frame.ICONIFIED : Frame.NORMAL; postWindowStateChangedEvent(newWindowState); // REMIND: RepaintManager doesn't repaint iconified windows and // hence ignores any repaint request during deiconification. // So, we need to repaint window explicitly when it becomes normal. if (!iconify) { repaintPeer(); } } public void notifyZoom(boolean isZoomed) { int newWindowState = isZoomed ? Frame.MAXIMIZED_BOTH : Frame.NORMAL; postWindowStateChangedEvent(newWindowState); } /** * Called by the delegate when any part of the window should be repainted. */ public void notifyExpose(final int x, final int y, final int w, final int h) { // TODO: there's a serious problem with Swing here: it handles // the exposition internally, so SwingPaintEventDispatcher always // return null from createPaintEvent(). However, we flush the // back buffer here unconditionally, so some flickering may appear. // A possible solution is to split postPaintEvent() into two parts, // and override that part which is only called after if // createPaintEvent() returned non-null value and flush the buffer // from the overridden method flushOnscreenGraphics(); repaintPeer(new Rectangle(x, y, w, h)); } /** * Called by the delegate when this window is moved/resized by user. * There's no notifyReshape() in LWComponentPeer as the only * components which could be resized by user are top-level windows. */ public final void notifyReshape(int x, int y, int w, int h) { boolean moved = false; boolean resized = false; synchronized (getStateLock()) { moved = (x != sysX) || (y != sysY); resized = (w != sysW) || (h != sysH); sysX = x; sysY = y; sysW = w; sysH = h; } // Check if anything changed if (!moved && !resized) { return; } // First, update peer's bounds setBounds(x, y, w, h, SET_BOUNDS, false, false); // Second, update the graphics config and surface data checkIfOnNewScreen(); if (resized) { replaceSurfaceData(); flushOnscreenGraphics(); } // Third, COMPONENT_MOVED/COMPONENT_RESIZED events if (moved) { handleMove(x, y, true); } if (resized) { handleResize(w, h,true); } } private void clearBackground(final int w, final int h) { final Graphics g = getOnscreenGraphics(getForeground(), getBackground(), getFont()); if (g != null) { try { if (g instanceof Graphics2D) { ((Graphics2D) g).setComposite(AlphaComposite.Src); } if (isTranslucent()) { g.setColor(nonOpaqueBackground); g.fillRect(0, 0, w, h); } if (!isTextured()) { if (g instanceof SunGraphics2D) { SG2DConstraint((SunGraphics2D) g, getRegion()); } g.setColor(getBackground()); g.fillRect(0, 0, w, h); } } finally { g.dispose(); } } } public void notifyUpdateCursor() { getLWToolkit().getCursorManager().updateCursorLater(this); } public void notifyActivation(boolean activation) { changeFocusedWindow(activation); } // MouseDown in non-client area public void notifyNCMouseDown() { // Ungrab except for a click on a Dialog with the grabbing owner if (grabbingWindow != null && grabbingWindow != getOwnerFrameDialog(this)) { grabbingWindow.ungrab(); } } // ---- EVENTS ---- // /* * Called by the delegate to dispatch the event to Java. Event * coordinates are relative to non-client window are, i.e. the top-left * point of the client area is (insets.top, insets.left). */ public void dispatchMouseEvent(int id, long when, int button, int x, int y, int screenX, int screenY, int modifiers, int clickCount, boolean popupTrigger, byte[] bdata) { // TODO: fill "bdata" member of AWTEvent Rectangle r = getBounds(); // findPeerAt() expects parent coordinates LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y); if (id == MouseEvent.MOUSE_EXITED) { isMouseOver = false; if (lastMouseEventPeer != null) { if (lastMouseEventPeer.isEnabled()) { Point lp = lastMouseEventPeer.windowToLocal(x, y, this); postEvent(new MouseEvent(lastMouseEventPeer.getTarget(), MouseEvent.MOUSE_EXITED, when, modifiers, lp.x, lp.y, screenX, screenY, clickCount, popupTrigger, button)); } // Sometimes we may get MOUSE_EXITED after lastCommonMouseEventPeer is switched // to a peer from another window. So we must first check if this peer is // the same as lastWindowPeer if (lastCommonMouseEventPeer != null && lastCommonMouseEventPeer.getWindowPeerOrSelf() == this) { lastCommonMouseEventPeer = null; } lastMouseEventPeer = null; } } else if(id == MouseEvent.MOUSE_ENTERED) { isMouseOver = true; if (targetPeer != null) { if (targetPeer.isEnabled()) { Point lp = targetPeer.windowToLocal(x, y, this); postEvent(new MouseEvent(targetPeer.getTarget(), MouseEvent.MOUSE_ENTERED, when, modifiers, lp.x, lp.y, screenX, screenY, clickCount, popupTrigger, button)); } lastCommonMouseEventPeer = targetPeer; lastMouseEventPeer = targetPeer; } } else { PlatformWindow topmostPlatforWindow = platformWindow.getTopmostPlatformWindowUnderMouse(); // The getTopmostPlatformWindowUnderMouse method can return null // either because there is no any window under mouse or // because this method is not implemented (see CPlatformEmbeddedFrame). // In both case this window is the target window for the component // mouse enter/exit events generation LWWindowPeer topmostWindowPeer = topmostPlatforWindow != null ? topmostPlatforWindow.getPeer() : this; if (topmostWindowPeer == this) { generateMouseEnterExitEventsForComponents(when, button, x, y, screenX, screenY, modifiers, clickCount, popupTrigger, targetPeer); } else { LWComponentPeer topmostTargetPeer = topmostWindowPeer != null ? topmostWindowPeer.findPeerAt(r.x + x, r.y + y) : null; topmostWindowPeer.generateMouseEnterExitEventsForComponents(when, button, x, y, screenX, screenY, modifiers, clickCount, popupTrigger, topmostTargetPeer); } // TODO: fill "bdata" member of AWTEvent int eventButtonMask = (button > 0)? MouseEvent.getMaskForButton(button) : 0; int otherButtonsPressed = modifiers & ~eventButtonMask; // For pressed/dragged/released events OS X treats other // mouse buttons as if they were BUTTON2, so we do the same int targetIdx = (button > 3) ? MouseEvent.BUTTON2 - 1 : button - 1; // MOUSE_ENTERED/EXITED are generated for the components strictly under // mouse even when dragging. That's why we first update lastMouseEventPeer // based on initial targetPeer value and only then recalculate targetPeer // for MOUSE_DRAGGED/RELEASED events if (id == MouseEvent.MOUSE_PRESSED) { // Ungrab only if this window is not an owned window of the grabbing one. if (!isGrabbing() && grabbingWindow != null && grabbingWindow != getOwnerFrameDialog(this)) { grabbingWindow.ungrab(); } if (otherButtonsPressed == 0) { mouseClickButtons = eventButtonMask; } else { mouseClickButtons |= eventButtonMask; } mouseDownTarget[targetIdx] = targetPeer; } else if (id == MouseEvent.MOUSE_DRAGGED) { // Cocoa dragged event has the information about which mouse // button is being dragged. Use it to determine the peer that // should receive the dragged event. targetPeer = mouseDownTarget[targetIdx]; mouseClickButtons &= ~modifiers; } else if (id == MouseEvent.MOUSE_RELEASED) { // TODO: currently, mouse released event goes to the same component // that received corresponding mouse pressed event. For most cases, // it's OK, however, we need to make sure that our behavior is consistent // with 1.6 for cases where component in question have been // hidden/removed in between of mouse pressed/released events. targetPeer = mouseDownTarget[targetIdx]; if ((modifiers & eventButtonMask) == 0) { mouseDownTarget[targetIdx] = null; } // mouseClickButtons is updated below, after MOUSE_CLICK is sent } if (targetPeer == null) { //TODO This can happen if this window is invisible. this is correct behavior in this case? targetPeer = this; } Point lp = targetPeer.windowToLocal(x, y, this); if (targetPeer.isEnabled()) { MouseEvent event = new MouseEvent(targetPeer.getTarget(), id, when, modifiers, lp.x, lp.y, screenX, screenY, clickCount, popupTrigger, button); postEvent(event); } if (id == MouseEvent.MOUSE_RELEASED) { if ((mouseClickButtons & eventButtonMask) != 0 && targetPeer.isEnabled()) { postEvent(new MouseEvent(targetPeer.getTarget(), MouseEvent.MOUSE_CLICKED, when, modifiers, lp.x, lp.y, screenX, screenY, clickCount, popupTrigger, button)); } mouseClickButtons &= ~eventButtonMask; } } notifyUpdateCursor(); } private void generateMouseEnterExitEventsForComponents(long when, int button, int x, int y, int screenX, int screenY, int modifiers, int clickCount, boolean popupTrigger, LWComponentPeer targetPeer) { if (!isMouseOver || targetPeer == lastMouseEventPeer) { return; } // Generate Mouse Exit for components if (lastMouseEventPeer != null && lastMouseEventPeer.isEnabled()) { Point oldp = lastMouseEventPeer.windowToLocal(x, y, this); postEvent(new MouseEvent(lastMouseEventPeer.getTarget(), MouseEvent.MOUSE_EXITED, when, modifiers, oldp.x, oldp.y, screenX, screenY, clickCount, popupTrigger, button)); } lastCommonMouseEventPeer = targetPeer; lastMouseEventPeer = targetPeer; // Generate Mouse Enter for components if (targetPeer != null && targetPeer.isEnabled()) { Point newp = targetPeer.windowToLocal(x, y, this); postEvent(new MouseEvent(targetPeer.getTarget(), MouseEvent.MOUSE_ENTERED, when, modifiers, newp.x, newp.y, screenX, screenY, clickCount, popupTrigger, button)); } } public void dispatchMouseWheelEvent(long when, int x, int y, int modifiers, int scrollType, int scrollAmount, int wheelRotation, double preciseWheelRotation, byte[] bdata) { // TODO: could we just use the last mouse event target here? Rectangle r = getBounds(); // findPeerAt() expects parent coordinates final LWComponentPeer targetPeer = findPeerAt(r.x + x, r.y + y); if (targetPeer == null || !targetPeer.isEnabled()) { return; } Point lp = targetPeer.windowToLocal(x, y, this); // TODO: fill "bdata" member of AWTEvent // TODO: screenX/screenY postEvent(new MouseWheelEvent(targetPeer.getTarget(), MouseEvent.MOUSE_WHEEL, when, modifiers, lp.x, lp.y, 0, 0, /* screenX, Y */ 0 /* clickCount */, false /* popupTrigger */, scrollType, scrollAmount, wheelRotation, preciseWheelRotation)); } /* * Called by the delegate when a key is pressed. */ public void dispatchKeyEvent(int id, long when, int modifiers, int keyCode, char keyChar, int keyLocation) { LWComponentPeer focusOwner = LWKeyboardFocusManagerPeer.getInstance(getAppContext()). getFocusOwner(); // Null focus owner may receive key event when // application hides the focused window upon ESC press // (AWT transfers/clears the focus owner) and pending ESC release // may come to already hidden window. This check eliminates NPE. if (focusOwner != null) { KeyEvent event = new KeyEvent(focusOwner.getTarget(), id, when, modifiers, keyCode, keyChar, keyLocation); focusOwner.postEvent(event); } } // ---- UTILITY METHODS ---- // private void postWindowStateChangedEvent(int newWindowState) { if (getTarget() instanceof Frame) { AWTAccessor.getFrameAccessor().setExtendedState( (Frame)getTarget(), newWindowState); } WindowEvent stateChangedEvent = new WindowEvent(getTarget(), WindowEvent.WINDOW_STATE_CHANGED, windowState, newWindowState); postEvent(stateChangedEvent); windowState = newWindowState; } private static int getGraphicsConfigScreen(GraphicsConfiguration gc) { // TODO: this method can be implemented in a more // efficient way by forwarding to the delegate GraphicsDevice gd = gc.getDevice(); GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment(); GraphicsDevice[] gds = ge.getScreenDevices(); for (int i = 0; i < gds.length; i++) { if (gds[i] == gd) { return i; } } // Should never happen if gc is a screen device config return 0; } /* * This method is called when window's graphics config is changed from * the app code (e.g. when the window is made non-opaque) or when * the window is moved to another screen by user. * * Returns true if the graphics config has been changed, false otherwise. */ private boolean setGraphicsConfig(GraphicsConfiguration gc) { synchronized (getStateLock()) { if (graphicsConfig == gc) { return false; } // If window's graphics config is changed from the app code, the // config correspond to the same device as before; when the window // is moved by user, graphicsDevice is updated in checkIfOnNewScreen(). // In either case, there's nothing to do with screenOn here graphicsConfig = gc; } // SurfaceData is replaced later in updateGraphicsData() return true; } private void checkIfOnNewScreen() { GraphicsDevice newGraphicsDevice = platformWindow.getGraphicsDevice(); synchronized (getStateLock()) { if (graphicsDevice == newGraphicsDevice) { return; } graphicsDevice = newGraphicsDevice; } // TODO: DisplayChangedListener stuff final GraphicsConfiguration newGC = newGraphicsDevice.getDefaultConfiguration(); if (!setGraphicsConfig(newGC)) return; SunToolkit.executeOnEventHandlerThread(getTarget(), new Runnable() { public void run() { AWTAccessor.getComponentAccessor().setGraphicsConfiguration(getTarget(), newGC); } }); } /* * May be called by delegate to provide SD to Java2D code. */ public SurfaceData getSurfaceData() { synchronized (surfaceDataLock) { return surfaceData; } } private void replaceSurfaceData() { replaceSurfaceData(true); } private void replaceSurfaceData(boolean blit) { replaceSurfaceData(backBufferCount, backBufferCaps, blit); } private void replaceSurfaceData(int newBackBufferCount, BufferCapabilities newBackBufferCaps, boolean blit) { synchronized (surfaceDataLock) { final SurfaceData oldData = getSurfaceData(); surfaceData = platformWindow.replaceSurfaceData(); // TODO: volatile image // VolatileImage oldBB = backBuffer; BufferedImage oldBB = backBuffer; backBufferCount = newBackBufferCount; backBufferCaps = newBackBufferCaps; final Rectangle size = getSize(); if (getSurfaceData() != null && oldData != getSurfaceData()) { clearBackground(size.width, size.height); } if (blit) { blitSurfaceData(oldData, getSurfaceData()); } if (oldData != null && oldData != getSurfaceData()) { // TODO: drop oldData for D3D/WGL pipelines // This can only happen when this peer is being created oldData.flush(); } // TODO: volatile image // backBuffer = (VolatileImage)delegate.createBackBuffer(); backBuffer = (BufferedImage) platformWindow.createBackBuffer(); if (backBuffer != null) { Graphics g = backBuffer.getGraphics(); try { Rectangle r = getBounds(); if (g instanceof Graphics2D) { ((Graphics2D) g).setComposite(AlphaComposite.Src); } g.setColor(nonOpaqueBackground); g.fillRect(0, 0, r.width, r.height); if (g instanceof SunGraphics2D) { SG2DConstraint((SunGraphics2D) g, getRegion()); } if (!isTextured()) { g.setColor(getBackground()); g.fillRect(0, 0, r.width, r.height); } if (oldBB != null) { // Draw the old back buffer to the new one g.drawImage(oldBB, 0, 0, null); oldBB.flush(); } } finally { g.dispose(); } } } } private void blitSurfaceData(final SurfaceData src, final SurfaceData dst) { //TODO blit. proof-of-concept if (src != dst && src != null && dst != null && !(dst instanceof NullSurfaceData) && !(src instanceof NullSurfaceData) && src.getSurfaceType().equals(dst.getSurfaceType())) { final Rectangle size = getSize(); final Blit blit = Blit.locate(src.getSurfaceType(), CompositeType.Src, dst.getSurfaceType()); if (blit != null) { blit.Blit(src, dst, AlphaComposite.Src, getRegion(), 0, 0, 0, 0, size.width, size.height); } } } public int getBackBufferCount() { return backBufferCount; } public BufferCapabilities getBackBufferCaps() { return backBufferCaps; } /* * Request the window insets from the delegate and compares it * with the current one. This method is mostly called by the * delegate, e.g. when the window state is changed and insets * should be recalculated. * * This method may be called on the toolkit thread. */ public boolean updateInsets(Insets newInsets) { boolean changed = false; synchronized (getStateLock()) { changed = (insets.equals(newInsets)); insets = newInsets; } if (changed) { replaceSurfaceData(); repaintPeer(); } return changed; } public static LWWindowPeer getWindowUnderCursor() { return lastCommonMouseEventPeer != null ? lastCommonMouseEventPeer.getWindowPeerOrSelf() : null; } public static LWComponentPeer getPeerUnderCursor() { return lastCommonMouseEventPeer; } /* * Requests platform to set native focus on a frame/dialog. * In case of a simple window, triggers appropriate java focus change. */ public boolean requestWindowFocus(CausedFocusEvent.Cause cause) { if (focusLog.isLoggable(PlatformLogger.FINE)) { focusLog.fine("requesting native focus to " + this); } if (!focusAllowedFor()) { focusLog.fine("focus is not allowed"); return false; } if (platformWindow.rejectFocusRequest(cause)) { return false; } Window currentActive = KeyboardFocusManager. getCurrentKeyboardFocusManager().getActiveWindow(); // Make the owner active window. if (isSimpleWindow()) { LWWindowPeer owner = getOwnerFrameDialog(this); // If owner is not natively active, request native // activation on it w/o sending events up to java. if (owner != null && !owner.platformWindow.isActive()) { if (focusLog.isLoggable(PlatformLogger.FINE)) { focusLog.fine("requesting native focus to the owner " + owner); } LWWindowPeer currentActivePeer = (currentActive != null ? (LWWindowPeer)currentActive.getPeer() : null); // Ensure the opposite is natively active and suppress sending events. if (currentActivePeer != null && currentActivePeer.platformWindow.isActive()) { if (focusLog.isLoggable(PlatformLogger.FINE)) { focusLog.fine("the opposite is " + currentActivePeer); } currentActivePeer.skipNextFocusChange = true; } owner.skipNextFocusChange = true; owner.platformWindow.requestWindowFocus(); } // DKFM will synthesize all the focus/activation events correctly. changeFocusedWindow(true); return true; // In case the toplevel is active but not focused, change focus directly, // as requesting native focus on it will not have effect. } else if (getTarget() == currentActive && !getTarget().hasFocus()) { changeFocusedWindow(true); return true; } return platformWindow.requestWindowFocus(); } private boolean focusAllowedFor() { Window window = getTarget(); // TODO: check if modal blocked return window.isVisible() && window.isEnabled() && isFocusableWindow(); } private boolean isFocusableWindow() { boolean focusable = getTarget().isFocusableWindow(); if (isSimpleWindow()) { LWWindowPeer ownerPeer = getOwnerFrameDialog(this); if (ownerPeer == null) { return false; } return focusable && ownerPeer.getTarget().isFocusableWindow(); } return focusable; } public boolean isSimpleWindow() { Window window = getTarget(); return !(window instanceof Dialog || window instanceof Frame); } /* * Changes focused window on java level. */ private void changeFocusedWindow(boolean becomesFocused) { if (focusLog.isLoggable(PlatformLogger.FINE)) { focusLog.fine((becomesFocused?"gaining":"loosing") + " focus window: " + this); } if (skipNextFocusChange) { focusLog.fine("skipping focus change"); skipNextFocusChange = false; return; } if (!isFocusableWindow() && becomesFocused) { focusLog.fine("the window is not focusable"); return; } if (becomesFocused) { synchronized (getPeerTreeLock()) { if (blocker != null) { if (focusLog.isLoggable(PlatformLogger.FINEST)) { focusLog.finest("the window is blocked by " + blocker); } return; } } } LWKeyboardFocusManagerPeer manager = LWKeyboardFocusManagerPeer. getInstance(getAppContext()); Window oppositeWindow = becomesFocused ? manager.getCurrentFocusedWindow() : null; // Note, the method is not called: // - when the opposite (gaining focus) window is an owned/owner window. // - for a simple window in any case. if (!becomesFocused && (isGrabbing() || getOwnerFrameDialog(grabbingWindow) == this)) { focusLog.fine("ungrabbing on " + grabbingWindow); // ungrab a simple window if its owner looses activation. grabbingWindow.ungrab(); } manager.setFocusedWindow(becomesFocused ? LWWindowPeer.this : null); int eventID = becomesFocused ? WindowEvent.WINDOW_GAINED_FOCUS : WindowEvent.WINDOW_LOST_FOCUS; WindowEvent windowEvent = new WindowEvent(getTarget(), eventID, oppositeWindow); // TODO: wrap in SequencedEvent postEvent(windowEvent); } static LWWindowPeer getOwnerFrameDialog(LWWindowPeer peer) { Window owner = (peer != null ? peer.getTarget().getOwner() : null); while (owner != null && !(owner instanceof Frame || owner instanceof Dialog)) { owner = owner.getOwner(); } return owner != null ? (LWWindowPeer)owner.getPeer() : null; } /** * Returns the foremost modal blocker of this window, or null. */ public LWWindowPeer getBlocker() { synchronized (getPeerTreeLock()) { LWWindowPeer blocker = this.blocker; if (blocker == null) { return null; } while (blocker.blocker != null) { blocker = blocker.blocker; } return blocker; } } public void enterFullScreenMode() { platformWindow.enterFullScreenMode(); } public void exitFullScreenMode() { platformWindow.exitFullScreenMode(); } public long getLayerPtr() { return getPlatformWindow().getLayerPtr(); } void grab() { if (grabbingWindow != null && !isGrabbing()) { grabbingWindow.ungrab(); } grabbingWindow = this; } void ungrab() { if (isGrabbing()) { grabbingWindow = null; postEvent(new UngrabEvent(getTarget())); } } private boolean isGrabbing() { return this == grabbingWindow; } @Override public String toString() { return super.toString() + " [target is " + getTarget() + "]"; } }