180 lines
5.9 KiB
Java
180 lines
5.9 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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* This is the Windows implementation of the Mouse.
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* @author elias_naur
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*/
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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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import org.lwjgl.input.Mouse;
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final class WindowsMouse {
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private final long hwnd;
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private final int mouse_button_count;
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private final boolean has_wheel;
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private final EventQueue event_queue = new EventQueue(Mouse.EVENT_SIZE);
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private final ByteBuffer mouse_event = ByteBuffer.allocate(Mouse.EVENT_SIZE);
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private final Object blank_cursor;
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private boolean mouse_grabbed;
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private byte[] button_states;
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private int accum_dx;
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private int accum_dy;
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private int accum_dwheel;
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private int last_x;
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private int last_y;
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WindowsMouse(long hwnd) throws LWJGLException {
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this.hwnd = hwnd;
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this.mouse_button_count = Math.min(5, WindowsDisplay.getSystemMetrics(WindowsDisplay.SM_CMOUSEBUTTONS));
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this.has_wheel = WindowsDisplay.getSystemMetrics(WindowsDisplay.SM_MOUSEWHEELPRESENT) != 0;
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this.blank_cursor = createBlankCursor();
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this.button_states = new byte[mouse_button_count];
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}
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private Object createBlankCursor() throws LWJGLException {
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int width = WindowsDisplay.getSystemMetrics(WindowsDisplay.SM_CXCURSOR);
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int height = WindowsDisplay.getSystemMetrics(WindowsDisplay.SM_CYCURSOR);
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IntBuffer pixels = BufferUtils.createIntBuffer(width*height);
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return WindowsDisplay.doCreateCursor(width, height, 0, 0, 1, pixels, null);
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}
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public boolean isGrabbed() {
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return mouse_grabbed;
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}
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public boolean hasWheel() {
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return has_wheel;
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}
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public int getButtonCount() {
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return mouse_button_count;
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}
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public void poll(IntBuffer coord_buffer, ByteBuffer buttons, WindowsDisplay display) {
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for (int i = 0; i < coord_buffer.remaining(); i++)
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coord_buffer.put(coord_buffer.position() + i, 0);
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int num_buttons = mouse_button_count;
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coord_buffer.put(coord_buffer.position() + 2, accum_dwheel);
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if (num_buttons > button_states.length)
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num_buttons = button_states.length;
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for (int j = 0; j < num_buttons; j++) {
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buttons.put(buttons.position() + j, button_states[j]);
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}
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if (isGrabbed()) {
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coord_buffer.put(coord_buffer.position() + 0, accum_dx);
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coord_buffer.put(coord_buffer.position() + 1, accum_dy);
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if ( display.isActive() && display.isVisible() && (accum_dx != 0 || accum_dy != 0) )
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WindowsDisplay.centerCursor(hwnd);
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} else {
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coord_buffer.put(coord_buffer.position() + 0, last_x);
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coord_buffer.put(coord_buffer.position() + 1, last_y);
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}
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accum_dx = accum_dy = accum_dwheel = 0;
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}
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private void putMouseEventWithCoords(byte button, byte state, int coord1, int coord2, int dz, long nanos) {
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mouse_event.clear();
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mouse_event.put(button).put(state).putInt(coord1).putInt(coord2).putInt(dz).putLong(nanos);
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mouse_event.flip();
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event_queue.putEvent(mouse_event);
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}
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private void putMouseEvent(byte button, byte state, int dz, long nanos) {
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if (mouse_grabbed)
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putMouseEventWithCoords(button, state, 0, 0, dz, nanos);
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else
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putMouseEventWithCoords(button, state, last_x, last_y, dz, nanos);
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}
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public void read(ByteBuffer buffer) {
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event_queue.copyEvents(buffer);
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}
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public Object getBlankCursor() {
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return blank_cursor;
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}
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public void grab(boolean grab) {
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mouse_grabbed = grab;
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event_queue.clearEvents();
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}
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public void handleMouseScrolled(int event_dwheel, long millis) {
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accum_dwheel += event_dwheel;
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putMouseEvent((byte)-1, (byte)0, event_dwheel, millis*1000000);
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}
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public void setPosition(int x, int y) {
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this.last_x = x;
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this.last_y = y;
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}
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public void destroy() {
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WindowsDisplay.doDestroyCursor(blank_cursor);
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}
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public void handleMouseMoved(int x, int y, long millis) {
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int dx = x - last_x;
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int dy = y - last_y;
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if (dx != 0 || dy != 0) {
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accum_dx += dx;
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accum_dy += dy;
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last_x = x;
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last_y = y;
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long nanos = millis*1000000;
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if (mouse_grabbed) {
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putMouseEventWithCoords((byte)-1, (byte)0, dx, dy, 0, nanos);
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} else {
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putMouseEventWithCoords((byte)-1, (byte)0, x, y, 0, nanos);
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}
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}
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}
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public void handleMouseButton(byte button, byte state, long millis) {
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putMouseEvent(button, state, 0, millis*1000000);
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if (button < button_states.length)
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button_states[button] = state != 0 ? (byte)1 : (byte)0;
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}
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}
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