Initial version of linux (working) and Windows (not yet working) native

libraries for enabling and disabling keyboard auto-repeat. Restored auto-repeating in our own KeyboardManager, and disabled the interval used to differentiate between a "real" and "fake" key repeat since we believe we can now do without it. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2107 542714f4-19e9-0310-aa3c-eee0fc999fb1
2003-01-12 00:26:39 +00:00
parent a91061cb30
commit de6c4371b9
7 changed files with 418 additions and 51 deletions
@@ -0,0 +1,56 @@
+//
+// $Id: Keyboard.java,v 1.1 2003/01/12 00:26:39 shaper Exp $
+
+package com.threerings.util.keybd;
+
+import com.threerings.util.Log;
+
+/**
+ * Provides access to the native operating system's auto-repeat keyboard
+ * settings.
+ */
+public class Keyboard
+{
+    /**
+     * Sets whether key auto-repeating is enabled.
+     */
+    public static native void setKeyRepeat (boolean enabled);
+
+    /**
+     * Returns whether key auto-repeating is enabled.
+     */
+    public static native boolean isKeyRepeatEnabled ();
+
+    /**
+     * Tests keyboard functionality.
+     */
+    public static void main (String[] args)
+    {
+        boolean enabled = (args.length > 0 && args[0].equals("on"));
+        Keyboard.setKeyRepeat(enabled);
+    }
+
+    /**
+     * Returns whether the native keyboard interface is available. 
+     */
+    public static boolean isAvailable ()
+    {
+        return _haveLib;
+    }
+
+    /** Whether the keyboard native library was successfully loaded. */
+    protected static boolean _haveLib;
+
+    static {
+        try {
+            System.loadLibrary("keybd");
+            _haveLib = true;
+            Log.info("Loaded native keyboard library.");
+
+        } catch (UnsatisfiedLinkError e) {
+            Log.warning("Failed to load native keyboard library " +
+                        "[e=" + e + "].");
+            _haveLib = false;
+        }
+    }
+}
@@ -0,0 +1,29 @@
+/* DO NOT EDIT THIS FILE - it is machine generated */
+#include <jni.h>
+/* Header for class com_threerings_util_keybd_Keyboard */
+
+#ifndef _Included_com_threerings_util_keybd_Keyboard
+#define _Included_com_threerings_util_keybd_Keyboard
+#ifdef __cplusplus
+extern "C" {
+#endif
+/*
+ * Class:     com_threerings_util_keybd_Keyboard
+ * Method:    setKeyRepeat
+ * Signature: (Z)V
+ */
+JNIEXPORT void JNICALL Java_com_threerings_util_keybd_Keyboard_setKeyRepeat
+  (JNIEnv *, jclass, jboolean);
+
+/*
+ * Class:     com_threerings_util_keybd_Keyboard
+ * Method:    isKeyRepeatEnabled
+ * Signature: ()Z
+ */
+JNIEXPORT jboolean JNICALL Java_com_threerings_util_keybd_Keyboard_isKeyRepeatEnabled
+  (JNIEnv *, jclass);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
@@ -0,0 +1,22 @@
+#
+# $Id: Makefile,v 1.1 2003/01/12 00:26:39 shaper Exp $
+
+CC=gcc
+RM=rm
+
+INCLUDES=-I.. -I/usr/local/jdk1.4/include -I/usr/local/jdk1.4/include/linux
+LIBRARIES_PATH=-L/usr/X11R6/lib
+LIBRARIES=-lX11
+TARGET=libkeybd.so
+
+all: ${TARGET}
+
+${TARGET}: com_threerings_util_keybd_Keyboard.c
+	${CC} ${INCLUDES} -c com_threerings_util_keybd_Keyboard.c \
+	    -o com_threerings_util_keybd_Keyboard.o
+	${CC} -o ${TARGET} com_threerings_util_keybd_Keyboard.o \
+	    ${LIBRARIES} ${LIBRARIES_PATH} -shared
+
+clean:
+	-${RM} *.o
+	-${RM} ${TARGET}
@@ -0,0 +1,92 @@
+/*
+ * $Id: com_threerings_util_keybd_Keyboard.c,v 1.1 2003/01/12 00:26:39 shaper Exp $
+ */
+
+#include <stdio.h>
+#include <X11/Xlib.h>
+#include <jni.h>
+#include "com_threerings_util_keybd_Keyboard.h"
+
+/* defines */
+#define MESSAGE_LENGTH (256)
+
+/* prototype definitions */
+Display* getXDisplay (JNIEnv* env);
+void throwRuntimeException (JNIEnv* env, char* message);
+
+JNIEXPORT void JNICALL
+Java_com_threerings_util_keybd_Keyboard_setKeyRepeat (
+    JNIEnv* env, jclass class, jboolean enabled)
+{
+    Display* display = getXDisplay(env);
+    if (display == NULL) {
+        return;
+    }
+
+    /* set the desired key auto-repeat state. */
+    if (enabled) {
+        XAutoRepeatOn(display);
+    } else {
+        XAutoRepeatOff(display);
+    }
+
+    /* close the display to save our changes */
+    XCloseDisplay(display);
+}
+
+JNIEXPORT jboolean JNICALL
+Java_com_threerings_util_keybd_Keyboard_isKeyRepeatEnabled (
+    JNIEnv* env, jclass class)
+{
+    XKeyboardState values;
+    Display* display = getXDisplay(env);
+    if (display == NULL) {
+        /* for now, assume auto-repeat is enabled */
+        return JNI_TRUE;
+    }
+
+    /* get the current keyboard control information */
+    XGetKeyboardControl(display, &values);
+
+    /* close the display */
+    XCloseDisplay(display);
+
+    return (values.global_auto_repeat) ? JNI_TRUE : JNI_FALSE;
+}
+
+/*
+ * Returns a pointer to the X display, or null if an error occurred.
+ */
+Display*
+getXDisplay (JNIEnv* env)
+{
+    char* disp = NULL;
+    Display* dpy = XOpenDisplay(disp);
+    if (dpy == NULL) {
+        char message[MESSAGE_LENGTH];
+        snprintf(message, MESSAGE_LENGTH,
+                 "Unable to open display [display=%s].\n", XDisplayName(disp));
+        throwRuntimeException(env, message);
+        return NULL;
+    }
+
+    /* printf("Opened display [disp=%s].\n", XDisplayName(disp)); */
+    return dpy;
+}
+
+/*
+ * Throws a runtime exception with the supplied message.
+ */
+void
+throwRuntimeException (JNIEnv* env, char* message)
+{
+    jclass eclass = (*env)->FindClass(env, "java/lang/RuntimeException");
+    if (eclass == 0) {
+        /* unable to find the exception class */
+        fprintf(stderr, "Can't get runtime exception class?! [message=%s].\n",
+                message);
+        return;
+    }
+
+    (*env)->ThrowNew(env, eclass, message);
+}
@@ -0,0 +1,27 @@
+#
+# $Id: Makefile,v 1.1 2003/01/12 00:26:39 shaper Exp $
+
+CROSSTOOLS_PATH=/usr/local/cross-tools
+MINGW_PATH=${CROSSTOOLS_PATH}/i386-mingw32msvc
+WIN32API_PATH=${CROSSTOOLS_PATH}/w32api
+
+CC=${MINGW_PATH}/bin/gcc
+RM=rm
+
+INCLUDES=-I.. -I/usr/local/jdk1.4/include -I/usr/local/jdk1.4/include/linux \
+    -I${CROSSTOOLS_PATH}/include -I${WIN32API_PATH}/include
+LIBRARIES_PATH=-L${CROSSTOOLS_PATH}/lib -L${WIN32API_PATH}/lib
+LIBRARIES=
+TARGET=keybd.dll
+
+all: ${TARGET}
+
+${TARGET}: com_threerings_util_keybd_Keyboard.c
+	${CC} ${INCLUDES} -c com_threerings_util_keybd_Keyboard.c \
+	    -o com_threerings_util_keybd_Keyboard.o
+	${CC} -o ${TARGET} com_threerings_util_keybd_Keyboard.o \
+	    ${LIBRARIES} ${LIBRARIES_PATH} -shared
+
+clean:
+	-${RM} *.o
+	-${RM} ${TARGET}
@@ -0,0 +1,104 @@
+/*
+ * $Id: com_threerings_util_keybd_Keyboard.c,v 1.1 2003/01/12 00:26:39 shaper Exp $
+ */
+
+#include <stdio.h>
+#include <jni.h>
+#include <windows.h>
+#include "com_threerings_util_keybd_Keyboard.h"
+
+/* prototype definitions */
+LRESULT CALLBACK KeyboardProc (int nCode, WPARAM wParam, LPARAM lParam);
+LRESULT CALLBACK LowLevelKeyboardProc (int nCode, WPARAM wParam, LPARAM lParam);
+
+/* static global variables */
+static HHOOK gKeyHook;
+static HINSTANCE gHInst;
+
+BOOL WINAPI
+DllMain (HANDLE hinstDLL, DWORD dwReason, LPVOID lpvReserved)
+{
+    /* save off our instance handle */
+    fprintf(stderr, "In DllMain.\n");
+    gHInst = (HINSTANCE)hinstDLL;
+}
+
+JNIEXPORT void JNICALL
+Java_com_threerings_util_keybd_Keyboard_setKeyRepeat (
+    JNIEnv* env, jclass class, jboolean enabled)
+{
+    if (enabled) {
+        if (gKeyHook != NULL) {
+            fprintf(stderr, "Removing windows keyboard hook.\n");
+            /* remove the keyboard hook */
+            UnhookWindowsHookEx(gKeyHook);
+            gKeyHook = NULL;
+        }
+
+    } else {
+        /* install the hook with which we usurp all keyboard events */
+/*         gKeyHook = SetWindowsHookEx( */
+/*             WH_KEYBOARD_LL, LowLevelKeyboardProc, hinstExe, 0); */
+
+        fprintf(stderr, "Setting windows keyboard hook.\n");
+        gKeyHook = SetWindowsHookEx(
+            WH_KEYBOARD, KeyboardProc, gHInst, 0);
+    }
+}
+
+JNIEXPORT jboolean JNICALL
+Java_com_threerings_util_keybd_Keyboard_isKeyRepeatEnabled (
+    JNIEnv* env, jclass class)
+{
+    /* since windows has no global key repeat enable/disable facility, we
+     * simply always return true here so that we'll be sure to "re-enable"
+     * key repeat, which will result in our properly removing the keyboard
+     * hook with which we trap key events. */
+    fprintf(stderr, "isKeyRepeatEnabled stderr.\n");
+    printf("isKeyRepeatEnabled stdout.\n");
+    return JNI_TRUE;
+}
+
+/*
+ * The keyboard event hook that eats all repeated keystrokes.
+ */
+LRESULT CALLBACK
+KeyboardProc (int nCode, WPARAM wParam, LPARAM lParam)
+{
+    int repeatCount = (lParam & KF_REPEAT);
+    fprintf(stderr, "Key down [key=%d, repeatCount=%d].\n",
+            wParam, repeatCount);
+    return (repeatCount > 1) ? 1 : CallNextHookEx(NULL, nCode, wParam, lParam);
+}
+
+#if 0
+
+/*
+ * The low-level keyboard event hook that eats all keystrokes.
+ */
+LRESULT CALLBACK
+LowLevelKeyboardProc (int nCode, WPARAM wParam, LPARAM lParam)
+{
+    BOOL fEatKeystroke = FALSE;
+
+    if (nCode == HC_ACTION) {
+        switch (wParam) {
+        case WM_KEYDOWN:
+        case WM_SYSKEYDOWN:
+        case WM_KEYUP:
+        case WM_SYSKEYUP: 
+            PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT) lParam;
+            fEatKeystroke = 
+                ((p->vkCode == VK_TAB) && ((p->flags & LLKHF_ALTDOWN) != 0)) ||
+                ((p->vkCode == VK_ESCAPE) && 
+                 ((p->flags & LLKHF_ALTDOWN) != 0)) ||
+                ((p->vkCode == VK_ESCAPE) && ((GetKeyState(VK_CONTROL) & 
+                                               0x8000) != 0));
+            break;
+        }
+    }
+
+    return (fEatKeystroke) ? 1 : CallNextHookEx(NULL, nCode, wParam, lParam);
+}
+
+#endif