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/*
* Copyright (c) 2014, 2022, 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 com.sun.glass.ui.monocle;
import com.sun.glass.ui.Size;
import java.nio.ByteBuffer;
/** Provides a native cursor for use with X11. Since X11 doesn't provide any
* programmatic way to dynamically hide/show the cursor, we use a workaround of
* creating a 1x1 transparent pixmap cursor which we activate whenever we want
* to hide the cursor.
*
*/
public class X11Cursor extends NativeCursor {
private static final int CURSOR_WIDTH = 16;
private static final int CURSOR_HEIGHT = 16;
protected long xdisplay;
protected long xwindow;
private ByteBuffer transparentCursorBuffer;
private long transparentCursor;
private long pixmap;
private static X xLib = X.getX();
X11Cursor() {
xdisplay =
NativePlatformFactory.getNativePlatform().accScreen.platformGetNativeDisplay();
xwindow = NativePlatformFactory.getNativePlatform().accScreen.platformGetNativeWindow();
/* Create the transparent cursor - we set this cursor active whenever
* we need the cursor to appear to be hidden
*/
transparentCursorBuffer = ByteBuffer.allocateDirect(4);
pixmap = xLib.XCreateBitmapFromData(xdisplay, xwindow,
transparentCursorBuffer, 1, 1);
X.XColor black = new X.XColor();
black.setRed(black.p, 0);
black.setGreen(black.p, 0);
black.setBlue(black.p, 0);
transparentCursor = xLib.XCreatePixmapCursor(xdisplay, pixmap,
pixmap, black.p, black.p, 0, 0);
xLib.XFreePixmap(xdisplay, pixmap);
}
@Override
Size getBestSize() {
return new Size(CURSOR_WIDTH, CURSOR_HEIGHT);
}
/** Set the cursor according to the current visibility and requested
* visibility
* @param visibility the new setting for the cursor's visibility.
*/
@Override
void setVisibility(boolean visibility) {
if (isVisible && !visibility) {
// make the X cursor invisible
xLib.XDefineCursor(xdisplay, xwindow, transparentCursor);
MonocleWindowManager.getInstance().repaintAll();
} else if (!isVisible && visibility) {
// make the cursor visible
xLib.XUndefineCursor(xdisplay, xwindow);
MonocleWindowManager.getInstance().repaintAll();
}
isVisible = visibility;
}
/** Set the cursor image to the requested bytes
*
* @param cursorImage the cursor image, in BYTE_BGRA_PRE format
*/
@Override
void setImage(byte[] cursorImage) {
}
/** For the X11 cursor, we don't do anything to move the cursor - X handles
* it for us
* @param x the new X location on the screen
* @param y the new Y location on the screen
*/
@Override
void setLocation(int x, int y) {
}
@Override
void setHotSpot(int hotspotX, int hotspotY) {
}
@Override
void shutdown() {
}
}
