Java example source code file (WFramePeer.java)

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Java - Java tags/keywords

awt, dimension, getpropertyaction, graphicsconfiguration, graphicsdevice, graphicsenvironment, inputmethodmanager, override, rectangle, security, set_bounds, string, wframepeer, wmenubarpeer, wwindowpeer

The WFramePeer.java Java example source code

/*
 * Copyright (c) 1996, 2013, 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.awt.windows;

import java.awt.*;
import java.awt.peer.*;
import sun.awt.AWTAccessor;
import sun.awt.im.InputMethodManager;
import java.security.AccessController;
import sun.security.action.GetPropertyAction;

class WFramePeer extends WWindowPeer implements FramePeer {

    static {
        initIDs();
    }

    // initialize JNI field and method IDs
    private static native void initIDs();

    // FramePeer implementation
    public native void setState(int state);
    public native int getState();

    // sync target and peer
    public void setExtendedState(int state) {
        AWTAccessor.getFrameAccessor().setExtendedState((Frame)target, state);
    }
    public int getExtendedState() {
        return AWTAccessor.getFrameAccessor().getExtendedState((Frame)target);
    }

    // Convenience methods to save us from trouble of extracting
    // Rectangle fields in native code.
    private native void setMaximizedBounds(int x, int y, int w, int h);
    private native void clearMaximizedBounds();

    private static final boolean keepOnMinimize = "true".equals(
        AccessController.doPrivileged(
            new GetPropertyAction(
            "sun.awt.keepWorkingSetOnMinimize")));

    public void setMaximizedBounds(Rectangle b) {
        if (b == null) {
            clearMaximizedBounds();
        } else {
            Rectangle adjBounds = (Rectangle)b.clone();
            adjustMaximizedBounds(adjBounds);
            setMaximizedBounds(adjBounds.x, adjBounds.y, adjBounds.width, adjBounds.height);
        }
    }

    /**
     * The incoming bounds describe the maximized size and position of the
     * window on the monitor that displays the window. But the window manager
     * expects that the bounds are based on the size and position of the
     * primary monitor, even if the window ultimately maximizes onto a
     * secondary monitor. And the window manager adjusts these values to
     * compensate for differences between the primary monitor and the monitor
     * that displays the window.
     * The method translates the incoming bounds to the values acceptable
     * by the window manager. For more details, please refer to 6699851.
     */
    private void adjustMaximizedBounds(Rectangle b) {
        GraphicsConfiguration currentDevGC = getGraphicsConfiguration();

        GraphicsDevice primaryDev = GraphicsEnvironment
            .getLocalGraphicsEnvironment().getDefaultScreenDevice();
        GraphicsConfiguration primaryDevGC = primaryDev.getDefaultConfiguration();

        if (currentDevGC != null && currentDevGC != primaryDevGC) {
            Rectangle currentDevBounds = currentDevGC.getBounds();
            Rectangle primaryDevBounds = primaryDevGC.getBounds();

            boolean isCurrentDevLarger =
                ((currentDevBounds.width - primaryDevBounds.width > 0) ||
                 (currentDevBounds.height - primaryDevBounds.height > 0));

            // the window manager doesn't seem to compensate for differences when
            // the primary monitor is larger than the monitor that display the window
            if (isCurrentDevLarger) {
                b.width -= (currentDevBounds.width - primaryDevBounds.width);
                b.height -= (currentDevBounds.height - primaryDevBounds.height);
            }
        }
    }

    @Override
    public boolean updateGraphicsData(GraphicsConfiguration gc) {
        boolean result = super.updateGraphicsData(gc);
        Rectangle bounds = AWTAccessor.getFrameAccessor().
                               getMaximizedBounds((Frame)target);
        if (bounds != null) {
            setMaximizedBounds(bounds);
        }
        return result;
    }

    @Override
    boolean isTargetUndecorated() {
        return ((Frame)target).isUndecorated();
    }

    public void reshape(int x, int y, int width, int height) {
        if (((Frame)target).isUndecorated()) {
            super.reshape(x, y, width, height);
        } else {
            reshapeFrame(x, y, width, height);
        }
    }

    public Dimension getMinimumSize() {
        Dimension d = new Dimension();
        if (!((Frame)target).isUndecorated()) {
            d.setSize(getSysMinWidth(), getSysMinHeight());
        }
        if (((Frame)target).getMenuBar() != null) {
            d.height += getSysMenuHeight();
        }
        return d;
    }

    // Note: Because this method calls resize(), which may be overridden
    // by client code, this method must not be executed on the toolkit
    // thread.
    public void setMenuBar(MenuBar mb) {
        WMenuBarPeer mbPeer = (WMenuBarPeer) WToolkit.targetToPeer(mb);
        setMenuBar0(mbPeer);
        updateInsets(insets_);
    }

    // Note: Because this method calls resize(), which may be overridden
    // by client code, this method must not be executed on the toolkit
    // thread.
    private native void setMenuBar0(WMenuBarPeer mbPeer);

    // Toolkit & peer internals

    WFramePeer(Frame target) {
        super(target);

        InputMethodManager imm = InputMethodManager.getInstance();
        String menuString = imm.getTriggerMenuString();
        if (menuString != null)
        {
          pSetIMMOption(menuString);
        }
    }

    native void createAwtFrame(WComponentPeer parent);
    void create(WComponentPeer parent) {
        preCreate(parent);
        createAwtFrame(parent);
    }

    void initialize() {
        super.initialize();

        Frame target = (Frame)this.target;

        if (target.getTitle() != null) {
            setTitle(target.getTitle());
        }
        setResizable(target.isResizable());
        setState(target.getExtendedState());
    }

    private native static int getSysMenuHeight();

    native void pSetIMMOption(String option);
    void notifyIMMOptionChange(){
      InputMethodManager.getInstance().notifyChangeRequest((Component)target);
    }

    public void setBoundsPrivate(int x, int y, int width, int height) {
        setBounds(x, y, width, height, SET_BOUNDS);
    }
    public Rectangle getBoundsPrivate() {
        return getBounds();
    }

    // TODO: implement it in peers. WLightweightFramePeer may implement lw version.
    public void emulateActivation(boolean activate) {
        synthesizeWmActivate(activate);
    }

    private native void synthesizeWmActivate(boolean activate);
}