jdk/src/java.desktop/macosx/classes/sun/lwawt/macosx/CPlatformComponent.java

/*
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 * 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.
 *
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package sun.lwawt.macosx;

import java.awt.Insets;

import sun.lwawt.PlatformComponent;
import sun.lwawt.PlatformWindow;

/**
 * On OSX {@code CPlatformComponent} stores pointer to the native CAlayer which
 * can be used from JAWT.
 */
class CPlatformComponent extends CFRetainedResource
        implements PlatformComponent {

    private volatile PlatformWindow platformWindow;

    CPlatformComponent() {
        super(0, true);
    }

    /**
     * Used by JAWT.
     */
    public long getPointer() {
        return ptr;
    }

    @Override
    public void initialize(final PlatformWindow platformWindow) {
        this.platformWindow = platformWindow;
        setPtr(nativeCreateComponent(platformWindow.getLayerPtr()));
    }

    // TODO: visibility, z-order

    @Override
    public void setBounds(final int x, final int y, final int w, final int h) {
        // translates values from the coordinate system of the top-level window
        // to the coordinate system of the content view
        final Insets insets = platformWindow.getPeer().getInsets();
        execute(ptr->nativeSetBounds(ptr, x - insets.left, y - insets.top, w, h));
    }

    @Override
    public void dispose() {
        super.dispose();
    }

    private native long nativeCreateComponent(long windowLayer);

    private native void nativeSetBounds(long ptr, int x, int y, int w, int h);
}