vnc-keypad-handling

xen 3.2.2 源码

# HG changeset patch
# User Christian Limpach <[e-mail]>
# Date 1178821985 -3600
# Node ID dfbbb4d3b0dd2107cfee2b07fab6f33cefc4719c
# Parent  23c4790512dbc889c4deed8ae1f8d54813c4b474
[qemu] Fix keypad handling for VNC.

Signed-off-by: Christian Limpach <[e-mail]>

Index: ioemu/vnc.c
===================================================================
--- ioemu.orig/vnc.c	2007-05-10 19:34:49.000000000 +0100
+++ ioemu/vnc.c	2007-05-10 19:34:51.000000000 +0100
@@ -909,6 +909,12 @@
     }
 }
 
+static void press_key(VncState *vs, int keysym)
+{
+    kbd_put_keycode(keysym2scancode(vs->kbd_layout, keysym) & 0x7f);
+    kbd_put_keycode(keysym2scancode(vs->kbd_layout, keysym) | 0x80);
+}
+
 static void do_key_event(VncState *vs, int down, uint32_t sym)
 {
     int keycode;
@@ -936,6 +942,28 @@
             return;
         }
         break;
+    case 0x45:			/* NumLock */
+	if (!down)
+	    vs->modifiers_state[keycode] ^= 1;
+	break;
+    }
+
+    if (keycodeIsKeypad(vs->kbd_layout, keycode)) {
+        /* If the numlock state needs to change then simulate an additional
+           keypress before sending this one.  This will happen if the user
+           toggles numlock away from the VNC window.
+        */
+        if (keysymIsNumlock(vs->kbd_layout, sym & 0xFFFF)) {
+	    if (!vs->modifiers_state[0x45]) {
+		vs->modifiers_state[0x45] = 1;
+		press_key(vs, 0xff7f);
+	    }
+	} else {
+	    if (vs->modifiers_state[0x45]) {
+		vs->modifiers_state[0x45] = 0;
+		press_key(vs, 0xff7f);
+	    }
+        }
     }
 
     if (is_graphic_console()) {
@@ -1427,6 +1455,7 @@
     vs->kbd_layout = init_keyboard_layout(keyboard_layout);
     if (!vs->kbd_layout)
 	exit(1);
+    vs->modifiers_state[0x45] = 1; /* NumLock on - on boot */
 
     vs->ds->data = NULL;
     vs->ds->dpy_update = vnc_dpy_update;
Index: ioemu/keymaps.c
===================================================================
--- ioemu.orig/keymaps.c	2007-05-10 19:34:49.000000000 +0100
+++ ioemu/keymaps.c	2007-05-10 19:34:51.000000000 +0100
@@ -32,6 +32,12 @@
     return 0;
 }
 
+struct key_range {
+    int start;
+    int end;
+    struct key_range *next;
+};
+
 #define MAX_NORMAL_KEYCODE 512
 #define MAX_EXTRA_COUNT 256
 typedef struct {
@@ -41,8 +47,34 @@
 	uint16_t keycode;
     } keysym2keycode_extra[MAX_EXTRA_COUNT];
     int extra_count;
+    struct key_range *keypad_range;
+    struct key_range *numlock_range;
 } kbd_layout_t;
 
+static void add_to_key_range(struct key_range **krp, int code) {
+    struct key_range *kr;
+    for (kr = *krp; kr; kr = kr->next) {
+	if (code >= kr->start && code <= kr->end)
+	    break;
+	if (code == kr->start - 1) {
+	    kr->start--;
+	    break;
+	}
+	if (code == kr->end + 1) {
+	    kr->end++;
+	    break;
+	}
+    }
+    if (kr == NULL) {
+	kr = qemu_mallocz(sizeof(*kr));
+	if (kr) {
+	    kr->start = kr->end = code;
+	    kr->next = *krp;
+	    *krp = kr;
+	}
+    }
+}
+
 static kbd_layout_t *parse_keyboard_layout(const char *language,
 					   kbd_layout_t * k)
 {
@@ -87,7 +119,15 @@
                     //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
 		} else {
 		    const char *rest = end_of_keysym + 1;
-		    int keycode = strtol(rest, NULL, 0);
+		    char *rest2;
+		    int keycode = strtol(rest, &rest2, 0);
+
+		    if (rest && strstr(rest, "numlock")) {
+			add_to_key_range(&k->keypad_range, keycode);
+			add_to_key_range(&k->numlock_range, keysym);
+			fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
+		    }
+
 		    /* if(keycode&0x80)
 		       keycode=(keycode<<8)^0x80e0; */
 		    if (keysym < MAX_NORMAL_KEYCODE) {
@@ -143,3 +183,25 @@
     }
     return 0;
 }
+
+static int keycodeIsKeypad(void *kbd_layout, int keycode)
+{
+    kbd_layout_t *k = kbd_layout;
+    struct key_range *kr;
+
+    for (kr = k->keypad_range; kr; kr = kr->next)
+	if (keycode >= kr->start && keycode <= kr->end)
+	    return 1;
+    return 0;
+}
+
+static int keysymIsNumlock(void *kbd_layout, int keysym)
+{
+    kbd_layout_t *k = kbd_layout;
+    struct key_range *kr;
+
+    for (kr = k->numlock_range; kr; kr = kr->next)
+	if (keysym >= kr->start && keysym <= kr->end)
+	    return 1;
+    return 0;
+}
Index: ioemu/vnc_keysym.h
===================================================================
--- ioemu.orig/vnc_keysym.h	2007-05-10 19:34:49.000000000 +0100
+++ ioemu/vnc_keysym.h	2007-05-10 19:34:51.000000000 +0100
@@ -232,6 +232,19 @@
 {"Home", 0xff50},      /* XK_Home */
 {"End", 0xff57},       /* XK_End */
 {"Scroll_Lock", 0xff14}, /* XK_Scroll_Lock */
+{"KP_Home", 0xff95},
+{"KP_Left", 0xff96},
+{"KP_Up", 0xff97},
+{"KP_Right", 0xff98},
+{"KP_Down", 0xff99},
+{"KP_Prior", 0xff9a},
+{"KP_Page_Up", 0xff9a},
+{"KP_Next", 0xff9b},
+{"KP_Page_Down", 0xff9b},
+{"KP_End", 0xff9c},
+{"KP_Begin", 0xff9d},
+{"KP_Insert", 0xff9e},
+{"KP_Delete", 0xff9f},
 {"F1", 0xffbe},        /* XK_F1 */
 {"F2", 0xffbf},        /* XK_F2 */
 {"F3", 0xffc0},        /* XK_F3 */
@@ -259,6 +272,7 @@
 {"KP_8", 0xffb8},      /* XK_KP_8 */
 {"KP_9", 0xffb9},      /* XK_KP_9 */
 {"KP_Add", 0xffab},    /* XK_KP_Add */
+{"KP_Separator", 0xffac},/* XK_KP_Separator */
 {"KP_Decimal", 0xffae},  /* XK_KP_Decimal */
 {"KP_Divide", 0xffaf},   /* XK_KP_Divide */
 {"KP_Enter", 0xff8d},    /* XK_KP_Enter */