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/*
* Copyright (c) 2013, 2014, 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
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*/
package com.sun.glass.ui.monocle;
import com.sun.glass.ui.Size;
import java.io.IOException;
import java.nio.Buffer;
import java.nio.ByteBuffer;
/** Cursor using a framebuffer overlay on OMAP3.
* TODO: Can we mmap the image and location files?
*/
class OMAPCursor extends NativeCursor {
private int hotspotX;
private int hotspotY;
private int offsetX;
private int offsetY;
private int cursorX;
private int cursorY;
private static final int INT_KEY = 0x12121212;
private static final int SHORT_KEY = 0xABAB;
private static final int CURSOR_WIDTH = 16;
private static final int CURSOR_HEIGHT = 16;
private Buffer cursorBuffer;
private Buffer offsetCursorBuffer;
private byte[] offsetCursor;
private int screenWidth;
private int screenHeight;
private int cursorDepth;
private int transparentPixel;
OMAPCursor() {
try {
SysFS.write("/sys/class/graphics/fb1/virtual_size", "16,16");
SysFS.write("/sys/devices/platform/omapdss/overlay1/output_size", "16,16");
SysFS.write("/sys/devices/platform/omapdss/manager0/trans_key_enabled",
"1");
SysFS.write("/sys/devices/platform/omapdss/manager0/trans_key_type",
"video-source");
cursorDepth = SysFS.readInt("/sys/class/graphics/fb1/bits_per_pixel");
switch (cursorDepth) {
case 16:
transparentPixel = SHORT_KEY;
break;
case 32:
transparentPixel = INT_KEY;
break;
default:
throw new IOException(
"Cannot use an OMAP cursor with a bit depth of "
+ cursorDepth);
}
SysFS.write("/sys/devices/platform/omapdss/manager0/trans_key_value",
Long.toString(transparentPixel));
} catch (IOException e) {
e.printStackTrace();
System.err.println("Failed to initialize OMAP cursor");
}
NativeScreen screen = NativePlatformFactory.getNativePlatform().getScreen();
screenWidth = screen.getWidth();
screenHeight = screen.getHeight();
}
@Override
Size getBestSize() {
return new Size(CURSOR_WIDTH, CURSOR_HEIGHT);
}
@Override
void setVisibility(boolean visibility) {
try {
SysFS.write("/sys/devices/platform/omapdss/overlay1/enabled",
visibility ? "1" : "0");
} catch (IOException e) {
System.err.format("Failed to %s OMAP cursor\n",
(visibility ? "enable" : "disable"));
}
isVisible = visibility;
}
private void updateImage(boolean always) {
int newOffsetX, newOffsetY;
newOffsetX = Math.max(0, CURSOR_WIDTH + cursorX - screenWidth);
newOffsetY = Math.max(0, CURSOR_HEIGHT + cursorY - screenHeight);
if (newOffsetX != offsetX || newOffsetY != offsetY || always) {
NativeCursors.offsetCursor(cursorBuffer, offsetCursorBuffer,
newOffsetX, newOffsetY,
CURSOR_WIDTH, CURSOR_HEIGHT,
cursorDepth, transparentPixel);
offsetX = newOffsetX;
offsetY = newOffsetY;
try {
SysFS.write("/dev/fb1", offsetCursor);
} catch (IOException e) {
System.err.println("Failed to write OMAP cursor image");
}
}
}
@Override
void setImage(byte[] cursorImage) {
// Convert the cursor to the color-keyed format
ByteBuffer bb = ByteBuffer.allocate(cursorImage.length);
cursorBuffer = cursorDepth == 32 ? bb.asIntBuffer() : bb.asShortBuffer();
NativeCursors.colorKeyCursor(cursorImage, cursorBuffer,
cursorDepth, transparentPixel);
// Create an offset version of the cursor for rendering
offsetCursor = new byte[cursorImage.length];
bb = ByteBuffer.wrap(offsetCursor);
offsetCursorBuffer = cursorDepth == 32 ? bb.asIntBuffer() : bb.asShortBuffer();
updateImage(true);
}
@Override
void setLocation(int x, int y) {
cursorX = x;
cursorY = y;
updateImage(false);
try {
SysFS.write("/sys/devices/platform/omapdss/overlay1/position",
(cursorX - hotspotX - offsetX)
+ "," + (cursorY - hotspotY - offsetY));
} catch (IOException e) {
System.err.println("Failed to set OMAP cursor position");
}
}
@Override
void setHotSpot(int hotspotX, int hotspotY) {
this.hotspotX = hotspotX;
this.hotspotY = hotspotY;
}
@Override
void shutdown() {
try {
SysFS.write("/sys/devices/platform/omapdss/overlay1/enabled", "0");
} catch (IOException e) {
System.err.println("Failed to shut down OMAP cursor");
}
}
}
