keymap: support combining shift & capslock with altgr

Add support for combining shift & caps lock keys with altgr so that
capital national characters can be written. There was some support for
shift+altgr in xrdp-keygen but it was never actually used.

genkeymap/genkeymap.c

@@ -45,8 +45,8 @@ int main(int argc, char **argv)
     char text[256];
     char *displayname = NULL;
     char *outfname;
-    char *sections[6] = {"noshift", "shift", "altgr", "shiftaltgr", "capslock", "shiftcapslock"};
-    int states[6] = {0, 1, 0x80, 0x81, 2, 3};
+    char *sections[8] = {"noshift", "shift", "altgr", "shiftaltgr", "capslock", "capslockaltgr", "shiftcapslock", "shiftcapslockaltgr"};
+    int states[8] = {0, 1, 0x80, 0x81, 2, 0x82, 3, 0x83};
     int i;
     int idx;
     int char_count;
@@ -94,7 +94,7 @@ int main(int argc, char **argv)
     e.display = dpy;
     e.same_screen = True;
 
-    for (idx = 0; idx < 6; idx++) /* Sections and states */
+    for (idx = 0; idx < 8; idx++) /* Sections and states */
     {
         fprintf(outf, "[%s]\n", sections[idx]);
         e.state = states[idx];
@@ -115,7 +115,7 @@ int main(int argc, char **argv)
             fprintf(outf, "Key%d=%d:%d\n", i, (int) ks, unicode);
         }
 
-        if (idx != 4)
+        if (idx != 7)
         {
             fprintf(outf, "\n");
         }

genkeymap/readme.txt

@@ -7,9 +7,10 @@ km-xxxx.ini
 
 where the xxxx is replaced by the hex number of the layout of interest.
 
-The files have 6 sections;
+The files have 8 sections;
 
-[noshift], [shift], [altgr], [shiftaltgr], [capslock], [shiftcapslock]
+[noshift], [shift], [altgr], [shiftaltgr], [capslock], [capslockaltgr],
+[shiftcapslock], [shiftcapslockaltgr]
 
 In each section there are multiple lines for each key.
 

xrdp/lang.c

@@ -90,14 +90,26 @@ get_key_info_from_scan_code(int device_flags, int scan_code, int *keys,
             rv = &(keymap->keys_noshift[index]);
         }
     }
+    else if (shift && caps_lock && altgr)
+    {
+        rv = &(keymap->keys_shiftcapslockaltgr[index]);
+    }
     else if (shift && caps_lock)
     {
         rv = &(keymap->keys_shiftcapslock[index]);
     }
-    else if (shift)
+    else if (shift && altgr)
+    {
+        rv = &(keymap->keys_shiftaltgr[index]);
+    }
+     else if (shift)
     {
         rv = &(keymap->keys_shift[index]);
     }
+    else if (caps_lock && altgr)
+    {
+        rv = &(keymap->keys_capslockaltgr[index]);
+    }
     else if (caps_lock)
     {
         rv = &(keymap->keys_capslock[index]);
@@ -242,8 +254,11 @@ get_keymaps(int keylayout, struct xrdp_keymap *keymap)
             km_read_section(fd, "noshift", keymap->keys_noshift);
             km_read_section(fd, "shift", keymap->keys_shift);
             km_read_section(fd, "altgr", keymap->keys_altgr);
+            km_read_section(fd, "shiftaltgr", keymap->keys_shiftaltgr);
             km_read_section(fd, "capslock", keymap->keys_capslock);
+            km_read_section(fd, "capslockaltgr", keymap->keys_capslockaltgr);
             km_read_section(fd, "shiftcapslock", keymap->keys_shiftcapslock);
+            km_read_section(fd, "shiftcapslockaltgr", keymap->keys_shiftcapslockaltgr);
 
             if (g_memcmp(lkeymap, keymap, sizeof(struct xrdp_keymap)) != 0)
             {

xrdp/xrdp_types.h

@@ -318,8 +318,11 @@ struct xrdp_keymap
   struct xrdp_key_info keys_noshift[256];
   struct xrdp_key_info keys_shift[256];
   struct xrdp_key_info keys_altgr[256];
+  struct xrdp_key_info keys_shiftaltgr[256];
   struct xrdp_key_info keys_capslock[256];
+  struct xrdp_key_info keys_capslockaltgr[256];
   struct xrdp_key_info keys_shiftcapslock[256];
+  struct xrdp_key_info keys_shiftcapslockaltgr[256];
 };
 
 /* the window manager */