532 lines
16 KiB
C
532 lines
16 KiB
C
/*
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* Copyright (c) 2002-2004 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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/**
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* $Id$
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*
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* Win32 mouse handling.
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*
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* @author Brian Matzon <brian@matzon.com>
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* @version $Revision$
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*/
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#undef DIRECTINPUT_VERSION
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#define DIRECTINPUT_VERSION 0x0300
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#include "Window.h"
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#include <dinput.h>
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#include "common_tools.h"
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#include "org_lwjgl_opengl_Win32Display.h"
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#include "org_lwjgl_input_Mouse.h"
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#define EVENT_SIZE 5
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#define BUTTON_STATES_SIZE 7
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extern HINSTANCE dll_handle; // Handle to the LWJGL dll
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static LPDIRECTINPUT lpdi = NULL; // DirectInput
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static LPDIRECTINPUTDEVICE mDIDevice; // DI Device instance
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static int mButtoncount = 0; // Temporary buttoncount
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static bool mHaswheel; // Temporary wheel check
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static bool mFirstTimeInitialization = true; // boolean to determine first time initialization
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static bool created = false;
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static jboolean win32_message_button_states[BUTTON_STATES_SIZE];
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static bool mouse_grabbed;
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/* These accumulated deltas track the cursor position from Windows messages */
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static int accum_dwheel;
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static int last_x;
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static int last_y;
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static event_queue_t event_queue;
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// Function prototypes (defined in the cpp file, since header file is generic across platforms
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BOOL CALLBACK EnumMouseObjectsCallback(LPCDIDEVICEOBJECTINSTANCE lpddoi, LPVOID pvRef);
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void ShutdownMouse(JNIEnv *env);
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void InitializeMouseFields();
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void UpdateMouseFields(JNIEnv *env, jobject coord_buffer_obj, jobject button_buffer_obj);
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static int transformY(int y) {
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RECT clientRect;
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GetClientRect(getCurrentHWND(), &clientRect);
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return (clientRect.bottom - clientRect.top) - 1 - y;
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}
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static bool putMouseEventWithCoords(jint button, jint state, jint coord1, jint coord2, jint dz) {
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jint event[] = {button, state, coord1, coord2, dz};
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return putEvent(&event_queue, event);
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}
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static bool putMouseEvent(jint button, jint state, jint dz) {
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if (mouse_grabbed)
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return putMouseEventWithCoords(button, state, 0, 0, dz);
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else
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return putMouseEventWithCoords(button, state, last_x, last_y, dz);
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}
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JNIEXPORT jboolean JNICALL Java_org_lwjgl_opengl_Win32Display_hasWheel(JNIEnv *env, jobject self) {
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return mHaswheel;
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}
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JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_Win32Display_getButtonCount(JNIEnv *env, jobject self) {
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return mButtoncount;
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}
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/**
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* Enumerates the capabilities of the Mouse attached to the system
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*/
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static bool EnumerateMouseCapabilities(JNIEnv *env) {
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HRESULT hr;
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hr = IDirectInputDevice_EnumObjects(mDIDevice, EnumMouseObjectsCallback, NULL, DIDFT_ALL);
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if FAILED(hr) {
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throwException(env, "EnumObjects failed");
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return false;
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}
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//check for > 4 buttons - need to clamp since we're using dx 5
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if(mButtoncount > 4) {
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mButtoncount = 4;
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printfDebugJava(env, "WARNING: Clamping to 4 mouse buttons\n");
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}
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return true;
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}
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/**
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* Creates the specified device as a Mouse
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*/
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static bool CreateMouse(JNIEnv *env) {
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HRESULT hr;
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hr = IDirectInput_CreateDevice(lpdi, &GUID_SysMouse, &mDIDevice, NULL);
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if FAILED(hr) {
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throwException(env, "CreateDevice failed");
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return false;
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} else
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return true;
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}
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static bool acquireMouse(DWORD flags) {
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if (IDirectInputDevice_SetCooperativeLevel(mDIDevice, getCurrentHWND(), flags) == DI_OK) {
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IDirectInputDevice_Acquire(mDIDevice);
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return true;
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} else
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return false;
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}
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static bool acquireMouseNonExclusive() {
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return acquireMouse(DISCL_NONEXCLUSIVE | DISCL_FOREGROUND) || acquireMouse(DISCL_NONEXCLUSIVE | DISCL_BACKGROUND);
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}
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/**
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* Sets up the Mouse properties
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*/
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static bool SetupMouse(JNIEnv *env) {
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DIPROPDWORD dipropdw;
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// set Mouse data format
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if(IDirectInputDevice_SetDataFormat(mDIDevice, &c_dfDIMouse) != DI_OK) {
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throwException(env, "SetDataFormat failed");
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return false;
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}
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dipropdw.diph.dwSize = sizeof(DIPROPDWORD);
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dipropdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
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dipropdw.diph.dwObj = 0;
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dipropdw.diph.dwHow = DIPH_DEVICE;
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dipropdw.dwData = EVENT_BUFFER_SIZE;
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IDirectInputDevice_SetProperty(mDIDevice, DIPROP_BUFFERSIZE, &dipropdw.diph);
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// set the cooperative level
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if (!acquireMouseNonExclusive()) {
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printfDebugJava(env, "SetCooperativeLevel failed");
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return false;
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}
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return true;
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}
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/**
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* Called when the Mouse instance is to be created
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*/
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_createMouse(JNIEnv *env, jobject self) {
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HRESULT ret;
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initEventQueue(&event_queue, EVENT_SIZE);
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last_x = last_y = accum_dwheel = 0;
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mouse_grabbed = false;
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// Create input
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ret = DirectInputCreate(dll_handle, DIRECTINPUT_VERSION, &lpdi, NULL);
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if (ret != DI_OK && ret != DIERR_BETADIRECTINPUTVERSION) {
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throwException(env, "Failed to create DirectInput");
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return;
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}
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/* skip enumeration, since we only want system mouse */
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if (!CreateMouse(env))
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return;
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//check for first time initialization - need to detect capabilities
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if (mFirstTimeInitialization) {
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/* Enumerate capabilities of Mouse */
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if (!EnumerateMouseCapabilities(env)) {
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ShutdownMouse(env);
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return;
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}
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mFirstTimeInitialization = false;
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}
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/* Do setup of Mouse */
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if (!SetupMouse(env)) {
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ShutdownMouse(env);
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return;
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}
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created = true;
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}
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void handleMouseScrolled(int event_dwheel) {
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if(created) {
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accum_dwheel += event_dwheel;
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putMouseEvent(-1, 0, event_dwheel);
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}
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}
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void handleMouseMoved(int x, int y) {
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int dx;
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int dy;
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if(created) {
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y = transformY(y);
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dx = x - last_x;
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dy = y - last_y;
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last_x = x;
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last_y = y;
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if (mouse_grabbed) {
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putMouseEventWithCoords(-1, 0, dx, dy, 0);
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} else {
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putMouseEventWithCoords(-1, 0, x, y, 0);
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}
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}
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}
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void handleMouseButton(int button, int state) {
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if(created) {
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putMouseEvent(button, state, 0);
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if (button < BUTTON_STATES_SIZE)
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win32_message_button_states[button] = state != 0 ? JNI_TRUE: JNI_FALSE;
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}
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}
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static void copyDXEvents(int num_di_events, DIDEVICEOBJECTDATA *di_buffer) {
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int buffer_index = 0;
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int dx = 0, dy = 0, dwheel = 0;
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int button_state;
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int i;
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for (i = 0; i < num_di_events; i++) {
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button_state = (di_buffer[i].dwData & 0x80) != 0 ? 1 : 0;
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switch (di_buffer[i].dwOfs) {
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case DIMOFS_BUTTON0:
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putMouseEventWithCoords(0, button_state, dx, -dy, dwheel);
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dx = dy = dwheel = 0;
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break;
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case DIMOFS_BUTTON1:
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putMouseEventWithCoords(1, button_state, dx, -dy, dwheel);
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dx = dy = dwheel = 0;
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break;
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case DIMOFS_BUTTON2:
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putMouseEventWithCoords(2, button_state, dx, -dy, dwheel);
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dx = dy = dwheel = 0;
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break;
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case DIMOFS_BUTTON3:
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putMouseEventWithCoords(3, button_state, dx, -dy, dwheel);
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dx = dy = dwheel = 0;
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break;
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case DIMOFS_X:
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dx += di_buffer[i].dwData;
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break;
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case DIMOFS_Y:
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dy += di_buffer[i].dwData;
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break;
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case DIMOFS_Z:
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dwheel += di_buffer[i].dwData;
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break;
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}
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}
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if (dx != 0 || dy != 0 || dwheel != 0)
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putMouseEventWithCoords(-1, 0, dx, -dy, dwheel);
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}
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static void readDXBuffer(JNIEnv *env) {
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DIDEVICEOBJECTDATA rgdod[EVENT_BUFFER_SIZE];
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DWORD num_di_events = EVENT_BUFFER_SIZE;
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HRESULT ret;
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ret = IDirectInputDevice_Acquire(mDIDevice);
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if (ret != DI_OK && ret != S_FALSE)
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return;
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ret = IDirectInputDevice_GetDeviceData(mDIDevice,
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sizeof(DIDEVICEOBJECTDATA),
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rgdod,
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&num_di_events,
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0);
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if (ret == DI_OK) {
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copyDXEvents(num_di_events, rgdod);
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} else if (ret == DI_BUFFEROVERFLOW) {
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printfDebugJava(env, "Buffer overflowed");
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} else if (ret == DIERR_INPUTLOST) {
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printfDebugJava(env, "Input lost");
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} else if (ret == DIERR_NOTACQUIRED) {
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printfDebugJava(env, "not acquired");
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} else if (ret == DIERR_INVALIDPARAM) {
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printfDebugJava(env, "invalid parameter");
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} else if (ret == DIERR_NOTBUFFERED) {
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printfDebugJava(env, "not buffered");
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} else if (ret == DIERR_NOTINITIALIZED) {
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printfDebugJava(env, "not inited");
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} else {
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printfDebugJava(env, "unknown keyboard error");
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}
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}
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JNIEXPORT jint JNICALL Java_org_lwjgl_opengl_Win32Display_nReadMouse
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(JNIEnv * env, jobject self, jobject buffer_obj, jint buffer_position)
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{
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jint* buffer_ptr = (jint *)(*env)->GetDirectBufferAddress(env, buffer_obj) + buffer_position;
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int buffer_size = ((*env)->GetDirectBufferCapacity(env, buffer_obj))/sizeof(jint) - buffer_position;
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if (mouse_grabbed) {
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readDXBuffer(env);
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}
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return copyEvents(&event_queue, buffer_ptr, buffer_size);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_setNativeCursor
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(JNIEnv *env, jobject self, jobject handle_buffer)
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{
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HCURSOR *cursor_handle;
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HCURSOR cursor;
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if (handle_buffer != NULL) {
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cursor_handle = (HCURSOR *)(*env)->GetDirectBufferAddress(env, handle_buffer);
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cursor = *cursor_handle;
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SetClassLongPtr(getCurrentHWND(), GCL_HCURSOR, (LONG_PTR)cursor);
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SetCursor(cursor);
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} else {
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SetClassLongPtr(getCurrentHWND(), GCL_HCURSOR, (LONG_PTR)NULL);
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SetCursor(LoadCursor(NULL, IDC_ARROW));
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}
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_destroyMouse(JNIEnv *env, jobject self) {
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ShutdownMouse(env);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_nPollMouse(JNIEnv * env, jobject self, jobject coord_buffer_obj, jobject button_buffer_obj) {
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UpdateMouseFields(env, coord_buffer_obj, button_buffer_obj);
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_setCursorPosition
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(JNIEnv * env, jobject self, jint x, jint y) {
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DWORD windowflags, exstyle;
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int transformed_x, transformed_y;
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RECT window_rect;
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RECT client_rect;
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RECT adjusted_client_rect;
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int left_border_width;
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int bottom_border_width;
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getWindowFlags(&windowflags, &exstyle, getCurrentFullscreen(), getBooleanProperty(env, "org.lwjgl.opengl.Window.undecorated"));
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if (!GetClientRect(getCurrentHWND(), &client_rect)) {
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printfDebugJava(env, "GetClientRect failed");
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return;
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}
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adjusted_client_rect = client_rect;
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if (!AdjustWindowRectEx(&adjusted_client_rect, windowflags, FALSE, exstyle)) {
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printfDebugJava(env, "AdjustWindowRectEx failed");
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return;
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}
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if (!GetWindowRect(getCurrentHWND(), &window_rect)) {
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printfDebugJava(env, "GetWindowRect failed");
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return;
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}
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left_border_width = -adjusted_client_rect.left;
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bottom_border_width = adjusted_client_rect.bottom - client_rect.bottom;
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transformed_x = window_rect.left + left_border_width + x;
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transformed_y = window_rect.bottom - bottom_border_width - 1 - y;
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if (!SetCursorPos(transformed_x, transformed_y))
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printfDebugJava(env, "SetCursorPos failed");
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}
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JNIEXPORT void JNICALL Java_org_lwjgl_opengl_Win32Display_grabMouse
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(JNIEnv * env, jobject self, jboolean grab) {
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HRESULT di_res;
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if(grab) {
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if (!mouse_grabbed) {
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mouse_grabbed = true;
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IDirectInputDevice_Unacquire(mDIDevice);
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if (!acquireMouse(DISCL_EXCLUSIVE | DISCL_FOREGROUND))
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printfDebugJava(env, "Failed to reset cooperative mode");
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}
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} else {
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if (mouse_grabbed) {
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mouse_grabbed = false;
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IDirectInputDevice_Unacquire(mDIDevice);
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acquireMouseNonExclusive();
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}
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}
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initEventQueue(&event_queue, EVENT_SIZE);
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}
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/**
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* Shutdown DI
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*/
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static void ShutdownMouse(JNIEnv *env) {
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// release device
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if (mDIDevice != NULL) {
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printfDebugJava(env, "Releasing mouse DI device");
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IDirectInputDevice_Unacquire(mDIDevice);
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IDirectInputDevice_Release(mDIDevice);
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mDIDevice = NULL;
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}
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// Release DirectInput
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if (lpdi != NULL) {
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printfDebugJava(env, "Releasing directinput");
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IDirectInput_Release(lpdi);
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lpdi = NULL;
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}
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created = false;
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}
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/**
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* Callback from EnumObjects. Called for each "object" on the Mouse.
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*/
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static BOOL CALLBACK EnumMouseObjectsCallback(LPCDIDEVICEOBJECTINSTANCE lpddoi, LPVOID pvRef) {
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printfDebug("found %s\n", lpddoi->tszName);
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if(IsEqualGUID(&lpddoi->guidType, &GUID_Button)) {
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mButtoncount++;
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} else if(IsEqualGUID(&lpddoi->guidType, &GUID_XAxis)) {
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} else if(IsEqualGUID(&lpddoi->guidType, &GUID_YAxis)) {
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} else if(IsEqualGUID(&lpddoi->guidType, &GUID_ZAxis)) {
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mHaswheel = true;
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} else {
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printfDebug("Unhandled object found: %s\n", lpddoi->tszName);
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}
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return DIENUM_CONTINUE;
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}
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static int cap(int val, int min, int max) {
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if (val < min)
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return min;
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else if (val > max)
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return max;
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else
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return val;
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}
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/**
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* Updates the fields on the Mouse
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*/
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static void UpdateMouseFields(JNIEnv *env, jobject coord_buffer_obj, jobject button_buffer_obj) {
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HRESULT hRes;
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DIMOUSESTATE diMouseState; // State of Mouse
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int i, j;
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int *coords = (int *)(*env)->GetDirectBufferAddress(env, coord_buffer_obj);
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int coords_length = (int)(*env)->GetDirectBufferCapacity(env, coord_buffer_obj);
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unsigned char *buttons_buffer = (unsigned char *)(*env)->GetDirectBufferAddress(env, button_buffer_obj);
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int num_buttons;
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int buttons_length = (int)(*env)->GetDirectBufferCapacity(env, button_buffer_obj);
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if (coords_length < 3) {
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printfDebugJava(env, "ERROR: Not enough space in coords array: %d < 3", coords_length);
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return;
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}
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hRes = IDirectInputDevice_GetDeviceState(mDIDevice, sizeof(DIMOUSESTATE), &diMouseState);
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if (mouse_grabbed || hRes == DI_OK) {
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if (hRes != DI_OK) {
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// Don't allow the mouse to drift when failed
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diMouseState.lX = 0;
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diMouseState.lY = 0;
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diMouseState.lZ = 0;
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// did the read fail because we lost input for some reason?
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// if so, then attempt to reacquire.
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if(hRes == DIERR_INPUTLOST || hRes == DIERR_NOTACQUIRED) {
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hRes = IDirectInputDevice_Acquire(mDIDevice);
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if (hRes != DI_OK) {
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|
return;
|
|
} else {
|
|
hRes = IDirectInputDevice_GetDeviceState(mDIDevice, sizeof(DIMOUSESTATE), &diMouseState);
|
|
if (hRes != DI_OK) {
|
|
printfDebugJava(env, "Error getting mouse state #2: %d", hRes);
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
printfDebugJava(env, "Error getting mouse state #2: %d", hRes);
|
|
return;
|
|
}
|
|
}
|
|
|
|
coords[2] = diMouseState.lZ;
|
|
num_buttons = mButtoncount;
|
|
if (num_buttons > buttons_length) {
|
|
num_buttons = buttons_length;
|
|
}
|
|
for (j = 0; j < num_buttons; j++) {
|
|
buttons_buffer[j] = diMouseState.rgbButtons[j] != 0 ? JNI_TRUE : JNI_FALSE;
|
|
// track the button state in the windows message buffer state array
|
|
// to get accurate button information when releasing a grab
|
|
win32_message_button_states[j] = buttons_buffer[j];
|
|
}
|
|
} else {
|
|
coords[2] = accum_dwheel;
|
|
num_buttons = mButtoncount;
|
|
if (num_buttons > BUTTON_STATES_SIZE) {
|
|
num_buttons = BUTTON_STATES_SIZE;
|
|
}
|
|
for (j = 0; j < num_buttons; j++) {
|
|
buttons_buffer[j] = win32_message_button_states[j];
|
|
}
|
|
}
|
|
accum_dwheel = 0;
|
|
if (mouse_grabbed) {
|
|
coords[0] = diMouseState.lX;
|
|
coords[1] = -diMouseState.lY;
|
|
} else {
|
|
coords[0] = last_x;
|
|
coords[1] = last_y;
|
|
}
|
|
}
|