193 lines
6.0 KiB
Java
193 lines
6.0 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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import java.awt.Cursor;
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import java.nio.ByteBuffer;
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import java.nio.IntBuffer;
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import org.lwjgl.BufferUtils;
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import org.lwjgl.LWJGLException;
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import org.lwjgl.LWJGLUtil;
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/**
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*
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* @author elias_naur <elias_naur@users.sourceforge.net>
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* @version $Revision: 2586 $
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* $Id: LinuxAWTGLCanvasPeerInfo.java 2586 2006-10-20 11:51:34Z elias_naur $
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*/
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final class WindowsAWTInput extends AbstractAWTInput {
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private final static int WS_CHILD = 0x40000000;
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private final Cursor blank_cursor;
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private Cursor cached_cursor;
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private long cached_hwnd;
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private WindowsDirectInputMouse cached_mouse;
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// private WindowsKeyboard cached_keyboard;
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private boolean has_grabbed;
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public WindowsAWTInput(AWTGLCanvas canvas) throws LWJGLException {
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super(canvas);
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int w = AWTUtil.getMinCursorSize();
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int h = AWTUtil.getMinCursorSize();
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blank_cursor = AWTUtil.createCursor(w, h, 0, 0, 1, BufferUtils.createIntBuffer(w*h), null);
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}
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public synchronized void destroyMouse() {
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if (cached_mouse != null) {
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grab(false);
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cached_mouse.destroy();
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cached_mouse = null;
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}
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super.destroyMouse();
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}
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/* public synchronized void destroyKeyboard() {
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if (cached_keyboard != null) {
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cached_keyboard.destroy();
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cached_keyboard = null;
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}
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super.destroyKeyboard();
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}
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*/
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public synchronized void processInput(PeerInfo peer_info) {
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WindowsPeerInfo windows_peerinfo = (WindowsPeerInfo)peer_info;
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long hwnd = windows_peerinfo.getHwnd();
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try {
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hwnd = findTopLevelWindow(hwnd);
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if (cached_mouse == null || hwnd != cached_hwnd) {
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has_grabbed = false;
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cached_hwnd = hwnd;
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if (cached_mouse != null) {
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cached_mouse.destroy();
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}
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/* if (cached_keyboard != null) {
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cached_keyboard.destroy();
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}*/
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WindowsDirectInput dinput = WindowsDisplay.createDirectInput();
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cached_mouse = new WindowsDirectInputMouse(dinput, hwnd);
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// cached_keyboard = new WindowsKeyboard(dinput, hwnd);
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}
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if (isGrabbed()) {
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/**
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* DirectInput won't always stop the cursor from moving on top of the
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* task bar and clicking on it. So we'll use ClipCursor to
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* contain it while the cursor is grabbed.
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*/
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WindowsDisplay.setupCursorClipping(hwnd); // Just clip it to a fullscreen window
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if (getCanvas().getCursor() != blank_cursor) {
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cached_cursor = getCanvas().getCursor();
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/**
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* For some reason, DirectInput won't let us blank the cursor
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* with the EXCLUSIVE access mode, so we'll work around it with a
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* custom blank cursor
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*/
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getCanvas().setCursor(blank_cursor);
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}
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} else
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WindowsDisplay.resetCursorClipping();
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grab(isGrabbed());
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} catch (LWJGLException e) {
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LWJGLUtil.log("Failed to create windows mouse: " + e);
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}
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}
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private static native int getWindowStyles(long hwnd) throws LWJGLException;
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private static native long getParentWindow(long hwnd);
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private static long findTopLevelWindow(long hwnd) throws LWJGLException {
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int window_styles = getWindowStyles(hwnd);
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while ((window_styles & WS_CHILD) != 0) {
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hwnd = getParentWindow(hwnd);
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window_styles = getWindowStyles(hwnd);
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}
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return hwnd;
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}
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private void grab(boolean grab) {
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if (has_grabbed != grab) {
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cached_mouse.grab(grab);
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// cached_keyboard.grab(grab);
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has_grabbed = grab;
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cached_mouse.flush();
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// cached_keyboard.flush();
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getMouseEventQueue().clearEvents();
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// getKeyboardEventQueue().clearEvents();
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if (!grab) {
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getCanvas().setCursor(cached_cursor);
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}
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}
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}
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public synchronized void grabMouse(boolean grab) {
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if (grab != isGrabbed()) {
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/* Only ungrab since grabbing can only occur in processInput
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* when the hwnd is guaranteed valid
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*/
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if (cached_mouse != null && !grab)
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grab(grab);
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super.grabMouse(grab);
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}
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}
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public synchronized void pollMouse(IntBuffer coord_buffer, ByteBuffer buttons) {
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if (isGrabbed()) {
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if (cached_mouse != null)
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cached_mouse.poll(coord_buffer, buttons);
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} else
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super.pollMouse(coord_buffer, buttons);
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}
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public synchronized void readMouse(ByteBuffer buffer) {
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if (isGrabbed()) {
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if (cached_mouse != null)
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cached_mouse.read(buffer);
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} else
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super.readMouse(buffer);
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}
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/* public synchronized void readKeyboard(ByteBuffer buffer) {
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if (isGrabbed()) {
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if (cached_keyboard != null)
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cached_keyboard.read(buffer);
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} else
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super.readKeyboard(buffer);
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}
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public synchronized void pollKeyboard(ByteBuffer keyDownBuffer) {
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if (isGrabbed()) {
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if (cached_keyboard != null)
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cached_keyboard.poll(keyDownBuffer);
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} else
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super.pollKeyboard(keyDownBuffer);
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}*/
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}
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