Add support for conversion from Android to libvterm keys

Change-Id: I06b7f78aabe64b223c136bb452c9952daaba543b

1 files changed, 165 insertions, 0 deletions

diff --git a/src/com/android/terminal/TerminalKeys.java b/src/com/android/terminal/TerminalKeys.java
new file mode 100644
index 0000000..5e88a20
--- /dev/null
+++ b/src/com/android/terminal/TerminalKeys.java
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.terminal;
+
+import android.util.Log;
+import android.view.KeyCharacterMap;
+import android.view.KeyEvent;
+
+public class TerminalKeys {
+    private static final String TAG = "TerminalKeys";
+    // Taken from vterm_input.h
+    // TODO: Consider setting these via jni
+    public static final int VTERM_KEY_NONE      = 0;
+    public static final int VTERM_KEY_ENTER     = 1;
+    public static final int VTERM_KEY_TAB       = 2;
+    public static final int VTERM_KEY_BACKSPACE = 3;
+    public static final int VTERM_KEY_ESCAPE    = 4;
+    public static final int VTERM_KEY_UP        = 5;
+    public static final int VTERM_KEY_DOWN      = 6;
+    public static final int VTERM_KEY_LEFT      = 7;
+    public static final int VTERM_KEY_RIGHT     = 8;
+    public static final int VTERM_KEY_INS       = 9;
+    public static final int VTERM_KEY_DEL       = 10;
+    public static final int VTERM_KEY_HOME      = 11;
+    public static final int VTERM_KEY_END       = 12;
+    public static final int VTERM_KEY_PAGEUP    = 13;
+    public static final int VTERM_KEY_PAGEDOWN  = 14;
+
+    public static final int VTERM_KEY_FUNCTION_0   = 256;
+    public static final int VTERM_KEY_FUNCTION_MAX = VTERM_KEY_FUNCTION_0 + 255;
+
+    public static final int VTERM_KEY_KP_0 = 512;
+    public static final int VTERM_KEY_KP_1 = 513;
+    public static final int VTERM_KEY_KP_2 = 514;
+    public static final int VTERM_KEY_KP_3 = 515;
+    public static final int VTERM_KEY_KP_4 = 516;
+    public static final int VTERM_KEY_KP_5 = 517;
+    public static final int VTERM_KEY_KP_6 = 518;
+    public static final int VTERM_KEY_KP_7 = 519;
+    public static final int VTERM_KEY_KP_8 = 520;
+    public static final int VTERM_KEY_KP_9 = 521;
+    public static final int VTERM_KEY_KP_MULT = 522;
+    public static final int VTERM_KEY_KP_PLUS = 523;
+    public static final int VTERM_KEY_KP_COMMA = 524;
+    public static final int VTERM_KEY_KP_MINUS = 525;
+    public static final int VTERM_KEY_KP_PERIOD = 526;
+    public static final int VTERM_KEY_KP_DIVIDE = 527;
+    public static final int VTERM_KEY_KP_ENTER = 528;
+    public static final int VTERM_KEY_KP_EQUAL = 529;
+
+    public static final int VTERM_MOD_NONE = 0x00;
+    public static final int VTERM_MOD_SHIFT = 0x01;
+    public static final int VTERM_MOD_ALT = 0x02;
+    public static final int VTERM_MOD_CTRL = 0x04;
+
+    public static int getModifier(KeyEvent event) {
+        int mod = 0;
+        if (event.isCtrlPressed()) {
+            mod |= VTERM_MOD_CTRL;
+        }
+        if (event.isAltPressed()) {
+            mod |= VTERM_MOD_ALT;
+        }
+        if (event.isShiftPressed()) {
+            mod |= VTERM_MOD_SHIFT;
+        }
+        return mod;
+    }
+
+    public static int getKey(KeyEvent event) {
+        switch(event.getKeyCode()) {
+            case KeyEvent.KEYCODE_ENTER:
+                return VTERM_KEY_ENTER;
+            case KeyEvent.KEYCODE_TAB:
+                return VTERM_KEY_TAB;
+            case KeyEvent.KEYCODE_DEL:
+                return VTERM_KEY_BACKSPACE;
+            case KeyEvent.KEYCODE_ESCAPE:
+                return VTERM_KEY_ESCAPE;
+            case KeyEvent.KEYCODE_DPAD_UP:
+                return VTERM_KEY_UP;
+            case KeyEvent.KEYCODE_DPAD_DOWN:
+                return VTERM_KEY_DOWN;
+            case KeyEvent.KEYCODE_DPAD_LEFT:
+                return VTERM_KEY_LEFT;
+            case KeyEvent.KEYCODE_DPAD_RIGHT:
+                return VTERM_KEY_RIGHT;
+            case KeyEvent.KEYCODE_INSERT:
+                return VTERM_KEY_INS;
+            case KeyEvent.KEYCODE_FORWARD_DEL:
+                return VTERM_KEY_DEL;
+            case KeyEvent.KEYCODE_MOVE_HOME:
+                return VTERM_KEY_HOME;
+            case KeyEvent.KEYCODE_MOVE_END:
+                return VTERM_KEY_END;
+            case KeyEvent.KEYCODE_PAGE_UP:
+                return VTERM_KEY_PAGEUP;
+            case KeyEvent.KEYCODE_PAGE_DOWN:
+                return VTERM_KEY_PAGEDOWN;
+            default:
+                return 0;
+        }
+    }
+
+    public static String getKeyName(int key) {
+        switch(key) {
+            case VTERM_KEY_ENTER:
+                return "VTERM_KEY_ENTER";
+            case VTERM_KEY_TAB:
+                return "VTERM_KEY_TAB";
+            case VTERM_KEY_BACKSPACE:
+                return "VTERM_KEY_BACKSPACE";
+            case VTERM_KEY_ESCAPE:
+                return "VTERM_KEY_ESCAPE";
+            case VTERM_KEY_UP:
+                return "VTERM_KEY_UP";
+            case VTERM_KEY_DOWN:
+                return "VTERM_KEY_DOWN";
+            case VTERM_KEY_LEFT:
+                return "VTERM_KEY_LEFT";
+            case VTERM_KEY_RIGHT:
+                return "VTERM_KEY_RIGHT";
+            case VTERM_KEY_INS:
+                return "VTERM_KEY_INS";
+            case VTERM_KEY_DEL:
+                return "VTERM_KEY_DEL";
+            case VTERM_KEY_HOME:
+                return "VTERM_KEY_HOME";
+            case VTERM_KEY_END:
+                return "VTERM_KEY_END";
+            case VTERM_KEY_PAGEUP:
+                return "VTERM_KEY_PAGEUP";
+            case VTERM_KEY_PAGEDOWN:
+                return "VTERM_KEY_PAGEDOWN";
+            case VTERM_KEY_NONE:
+                return "VTERM_KEY_NONE";
+            default:
+                return "UNKNOWN KEY";
+        }
+    }
+
+    public static int getCharacter(KeyEvent event) {
+        int c = event.getUnicodeChar();
+        // TODO: Actually support dead keys
+        if ((c & KeyCharacterMap.COMBINING_ACCENT) != 0) {
+            Log.w(TAG, "Received dead key, ignoring");
+            return VTERM_KEY_NONE;
+        }
+        return c;
+    }
+}