113 lines
3.5 KiB
Java
113 lines
3.5 KiB
Java
/*
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* Copyright (c) 2002-2008 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opengl;
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/**
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* An AWT implementation of a LWJGL compatible Mouse event queue.
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* @author elias_naur
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*/
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import java.awt.Component;
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import java.awt.Point;
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import java.awt.Rectangle;
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import java.nio.IntBuffer;
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import org.lwjgl.BufferUtils;
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final class MacOSXMouseEventQueue extends MouseEventQueue {
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private final IntBuffer delta_buffer = BufferUtils.createIntBuffer(2);
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private boolean skip_event;
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private static boolean is_grabbed;
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MacOSXMouseEventQueue(Component component) {
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super(component);
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}
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public void setGrabbed(boolean grab) {
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if (is_grabbed != grab) {
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super.setGrabbed(grab);
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warpCursor();
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grabMouse(grab);
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}
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}
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private static synchronized void grabMouse(boolean grab) {
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is_grabbed = grab;
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if (!grab)
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nGrabMouse(grab);
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}
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protected void resetCursorToCenter() {
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super.resetCursorToCenter();
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/* Clear accumulated deltas */
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getMouseDeltas(delta_buffer);
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}
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protected void updateDeltas(long nanos) {
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super.updateDeltas(nanos);
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synchronized ( this ) {
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getMouseDeltas(delta_buffer);
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int dx = delta_buffer.get(0);
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int dy = -delta_buffer.get(1);
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if (skip_event) {
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skip_event = false;
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nGrabMouse(isGrabbed());
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return;
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}
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if ( dx != 0 || dy != 0 ) {
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putMouseEventWithCoords((byte)-1, (byte)0, dx, dy, 0, nanos);
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addDelta(dx, dy);
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}
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}
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}
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void warpCursor() {
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synchronized (this) {
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// If we're going to warp the cursor position, we'll skip the next event to avoid bogus delta values
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skip_event = isGrabbed();
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}
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if (isGrabbed()) {
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Rectangle bounds = getComponent().getBounds();
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Point location_on_screen = getComponent().getLocationOnScreen();
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int x = location_on_screen.x + bounds.width/2;
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int y = location_on_screen.y + bounds.height/2;
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nWarpCursor(x, y);
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}
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}
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private static native void getMouseDeltas(IntBuffer delta_buffer);
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private static native void nWarpCursor(int x, int y);
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static native void nGrabMouse(boolean grab);
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} |