Various updates mainly for extra keys

app/src/main/java/com/termux/app/FullScreenHelper.java

@@ -1,68 +1,65 @@
 package com.termux.app;
 
-import android.app.Activity;
+import android.graphics.Color;
-import android.graphics.Rect;
+import android.graphics.drawable.ColorDrawable;
 import android.view.View;
-import android.view.ViewTreeObserver;
+
-import android.view.Window;
+import com.termux.R;
-import android.view.WindowManager;
-import android.widget.FrameLayout;
-import android.widget.FrameLayout.LayoutParams;
 
 /**
- * Utility to make the touch keyboard and immersive mode work with full screen activities.
+ * Utility to manage full screen immersive mode.
- * 
+ * <p/>
  * See https://code.google.com/p/android/issues/detail?id=5497
  */
-final class FullScreenHelper implements ViewTreeObserver.OnGlobalLayoutListener {
+final class FullScreenHelper {
 
     private boolean mEnabled = false;
-	private final Activity mActivity;
+    final TermuxActivity mActivity;
-	private final Rect mWindowRect = new Rect();
 
-	public FullScreenHelper(Activity activity) {
+    public FullScreenHelper(TermuxActivity activity) {
         this.mActivity = activity;
     }
 
     public void setImmersive(boolean enabled) {
-		Window win = mActivity.getWindow();
+        if (enabled == mEnabled) return;
-
-		if (enabled == mEnabled) {
-			if (!enabled) win.setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);
-			return;
-		}
         mEnabled = enabled;
 
-		final View childViewOfContent = ((FrameLayout) mActivity.findViewById(android.R.id.content)).getChildAt(0);
+        View decorView = mActivity.getWindow().getDecorView();
+
         if (enabled) {
-			win.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
+            decorView.setOnSystemUiVisibilityChangeListener
-			setImmersiveMode();
+                (new View.OnSystemUiVisibilityChangeListener() {
-			childViewOfContent.getViewTreeObserver().addOnGlobalLayoutListener(this);
-		} else {
-			win.setFlags(0, WindowManager.LayoutParams.FLAG_FULLSCREEN);
-			win.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
-			childViewOfContent.getViewTreeObserver().removeOnGlobalLayoutListener(this);
-			((LayoutParams) childViewOfContent.getLayoutParams()).height = android.view.ViewGroup.LayoutParams.MATCH_PARENT;
-		}
-	}
-
-	private void setImmersiveMode() {
-		mActivity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
-	}
-
                     @Override
-	public void onGlobalLayout() {
+                    public void onSystemUiVisibilityChange(int visibility) {
-		final View childViewOfContent = ((FrameLayout) mActivity.findViewById(android.R.id.content)).getChildAt(0);
+                        if ((visibility & View.SYSTEM_UI_FLAG_FULLSCREEN) == 0) {
-
+                            if (mActivity.mSettings.isShowExtraKeys()) {
-		if (mEnabled) setImmersiveMode();
+                                mActivity.findViewById(R.id.viewpager).setVisibility(View.VISIBLE);
-
+                            }
-		childViewOfContent.getWindowVisibleDisplayFrame(mWindowRect);
+                            setImmersiveMode();
-		int usableHeightNow = Math.min(mWindowRect.height(), childViewOfContent.getRootView().getHeight());
+                        } else {
-		FrameLayout.LayoutParams layout = (LayoutParams) childViewOfContent.getLayoutParams();
+                            mActivity.findViewById(R.id.viewpager).setVisibility(View.GONE);
-		if (layout.height != usableHeightNow) {
+                        }
-			layout.height = usableHeightNow;
+                    }
-			childViewOfContent.requestLayout();
+                });
+            setImmersiveMode();
+        } else {
+            decorView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
+            decorView.setOnSystemUiVisibilityChangeListener(null);
         }
     }
 
+    private static boolean isColorLight(int color) {
+        double darkness = 1 - (0.299 * Color.red(color) + 0.587 * Color.green(color) + 0.114 * Color.blue(color)) / 255;
+        return darkness < 0.5;
+    }
+
+    void setImmersiveMode() {
+        int flags = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
+            | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
+            | View.SYSTEM_UI_FLAG_FULLSCREEN;
+        int color = ((ColorDrawable) mActivity.getWindow().getDecorView().getBackground()).getColor();
+        if (isColorLight(color)) flags |= View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR;
+        mActivity.getWindow().getDecorView().setSystemUiVisibility(flags);
+    }
+
 }

app/src/main/java/com/termux/app/TermuxActivity.java

@@ -36,6 +36,7 @@ import android.text.SpannableString;
 import android.text.Spanned;
 import android.text.TextUtils;
 import android.text.style.StyleSpan;
+import android.util.Log;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Gravity;
@@ -43,10 +44,8 @@ import android.view.KeyEvent;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.view.View.OnKeyListener;
 import android.view.View.OnLongClickListener;
 import android.view.ViewGroup;
 import android.view.WindowManager;
@@ -61,14 +60,20 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import com.termux.R;
+import com.termux.terminal.EmulatorDebug;
+import com.termux.terminal.TerminalColors;
 import com.termux.terminal.TerminalSession;
 import com.termux.terminal.TerminalSession.SessionChangedCallback;
-import com.termux.view.TerminalKeyListener;
+import com.termux.terminal.TextStyle;
 import com.termux.view.TerminalView;
 
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.LinkedHashSet;
+import java.util.Properties;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -102,6 +107,8 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 	/** The main view of the activity showing the terminal. Initialized in onCreate(). */
 	@SuppressWarnings("NullableProblems") @NonNull TerminalView mTerminalView;
 
+    ExtraKeysView mExtraKeysView;
+
 	final FullScreenHelper mFullScreenHelper = new FullScreenHelper(this);
 
 	TermuxPreferences mSettings;
@@ -139,12 +146,46 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 					if (ensureStoragePermissionGranted()) TermuxInstaller.setupStorageSymlinks(TermuxActivity.this);
 					return;
 				}
-				mTerminalView.checkForFontAndColors();
+				checkForFontAndColors();
 				mSettings.reloadFromProperties(TermuxActivity.this);
 			}
 		}
 	};
 
+    void checkForFontAndColors() {
+        try {
+            // Hard-coded paths since this file is used also in Termux:Float.
+            @SuppressLint("SdCardPath") File fontFile = new File("/data/data/com.termux/files/home/.termux/font.ttf");
+            @SuppressLint("SdCardPath") File colorsFile = new File("/data/data/com.termux/files/home/.termux/colors.properties");
+
+            final Properties props = new Properties();
+            if (colorsFile.isFile()) {
+                try (InputStream in = new FileInputStream(colorsFile)) {
+                    props.load(in);
+                }
+            }
+
+            TerminalColors.COLOR_SCHEME.updateWith(props);
+            TerminalSession session = getCurrentTermSession();
+            if (session != null && session.getEmulator() != null) {
+                session.getEmulator().mColors.reset();
+            }
+            updateBackgroundColor();
+
+            final Typeface newTypeface = (fontFile.exists() && fontFile.length() > 0) ? Typeface.createFromFile(fontFile) : Typeface.MONOSPACE;
+            mTerminalView.setTypeface(newTypeface);
+        } catch (Exception e) {
+            Log.e(EmulatorDebug.LOG_TAG, "Error in checkForFontAndColors()", e);
+        }
+    }
+
+    void updateBackgroundColor() {
+        TerminalSession session = getCurrentTermSession();
+        if (session != null && session.getEmulator() != null) {
+            getWindow().getDecorView().setBackgroundColor(session.getEmulator().mColors.mCurrentColors[TextStyle.COLOR_INDEX_BACKGROUND]);
+        }
+    }
+
 	/** For processes to access shared internal storage (/sdcard) we need this permission. */
 	@TargetApi(Build.VERSION_CODES.M)
 	public boolean ensureStoragePermissionGranted() {
@@ -165,13 +206,11 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 	public void onCreate(Bundle bundle) {
 		super.onCreate(bundle);
 
-		// Prevent overdraw:
-		getWindow().getDecorView().setBackground(null);
-
         mSettings = new TermuxPreferences(this);
 
         setContentView(R.layout.drawer_layout);
 		mTerminalView = (TerminalView) findViewById(R.id.terminal_view);
+        mTerminalView.setOnKeyListener(new TermuxKeyListener(this));
 
         mTerminalView.setTextSize(mSettings.getFontSize());
 		mFullScreenHelper.setImmersive(mSettings.isFullScreen());
@@ -196,10 +235,9 @@ public final class TermuxActivity extends Activity implements ServiceConnection
                 LayoutInflater inflater = LayoutInflater.from(TermuxActivity.this);
                 View layout;
                 if (position == 0) {
-                    layout = (View) inflater.inflate(R.layout.extra_keys_main, collection, false);
+                    layout = mExtraKeysView = (ExtraKeysView) inflater.inflate(R.layout.extra_keys_main, collection, false);
-                    mTerminalView.mModifiers = (TerminalView.KeyboardModifiers) layout;
                 } else {
-                    layout = (View) inflater.inflate(R.layout.extra_keys_right, collection, false);
+                    layout = inflater.inflate(R.layout.extra_keys_right, collection, false);
                     final EditText editText = (EditText) layout.findViewById(R.id.text_input);
                     editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
                         @Override
@@ -224,7 +262,6 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         viewPager.addOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
             @Override
             public void onPageSelected(int position) {
-                int newHeight;
                 if (position == 0) {
                     mTerminalView.requestFocus();
                 } else {
@@ -234,120 +271,13 @@ public final class TermuxActivity extends Activity implements ServiceConnection
             }
         });
 
-        OnKeyListener keyListener = new OnKeyListener() {
-			@Override
-			public boolean onKey(View v, int keyCode, KeyEvent event) {
-				if (event.getAction() != KeyEvent.ACTION_DOWN) return false;
-
-				final TerminalSession currentSession = getCurrentTermSession();
-				if (currentSession == null) return false;
-
-				if (keyCode == KeyEvent.KEYCODE_ENTER && !currentSession.isRunning()) {
-					// Return pressed with finished session - remove it.
-					currentSession.finishIfRunning();
-
-					int index = mTermService.removeTermSession(currentSession);
-					mListViewAdapter.notifyDataSetChanged();
-					if (mTermService.getSessions().isEmpty()) {
-						// There are no sessions to show, so finish the activity.
-						finish();
-					} else {
-						if (index >= mTermService.getSessions().size()) {
-							index = mTermService.getSessions().size() - 1;
-						}
-						switchToSession(mTermService.getSessions().get(index));
-					}
-					return true;
-				} else if (!(event.isCtrlPressed() && event.isShiftPressed())) {
-					// Only hook shortcuts with Ctrl+Shift down.
-					return false;
-				}
-
-				// Get the unmodified code point:
-				int unicodeChar = event.getUnicodeChar(0);
-
-				if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN || unicodeChar == 'n'/* next */) {
-					int index = mTermService.getSessions().indexOf(currentSession);
-					if (++index >= mTermService.getSessions().size()) index = 0;
-					switchToSession(mTermService.getSessions().get(index));
-				} else if (keyCode == KeyEvent.KEYCODE_DPAD_UP || unicodeChar == 'p' /* previous */) {
-					int index = mTermService.getSessions().indexOf(currentSession);
-					if (--index < 0) index = mTermService.getSessions().size() - 1;
-					switchToSession(mTermService.getSessions().get(index));
-				} else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
-					getDrawer().openDrawer(Gravity.LEFT);
-				} else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
-					getDrawer().closeDrawers();
-				} else if (unicodeChar == 'f'/* full screen */) {
-					toggleImmersive();
-				} else if (unicodeChar == 'k'/* keyboard */) {
-					InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
-					imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
-				} else if (unicodeChar == 'm'/* menu */) {
-					mTerminalView.showContextMenu();
-				} else if (unicodeChar == 'r'/* rename */) {
-					renameSession(currentSession);
-				} else if (unicodeChar == 'c'/* create */) {
-					addNewSession(false, null);
-				} else if (unicodeChar == 'u' /* urls */) {
-					showUrlSelection();
-				} else if (unicodeChar == 'v') {
-					doPaste();
-				} else if (unicodeChar == '+' || event.getUnicodeChar(KeyEvent.META_SHIFT_ON) == '+') {
-					// We also check for the shifted char here since shift may be required to produce '+',
-					// see https://github.com/termux/termux-api/issues/2
-					changeFontSize(true);
-				} else if (unicodeChar == '-') {
-					changeFontSize(false);
-				} else if (unicodeChar >= '1' && unicodeChar <= '9') {
-					int num = unicodeChar - '1';
-					if (mTermService.getSessions().size() > num) switchToSession(mTermService.getSessions().get(num));
-				}
-				return true;
-			}
-		};
-		mTerminalView.setOnKeyListener(keyListener);
-		findViewById(R.id.left_drawer_list).setOnKeyListener(keyListener);
-
-		mTerminalView.setOnKeyListener(new TerminalKeyListener() {
-			@Override
-			public float onScale(float scale) {
-				if (scale < 0.9f || scale > 1.1f) {
-					boolean increase = scale > 1.f;
-					changeFontSize(increase);
-					return 1.0f;
-				}
-				return scale;
-			}
-
-			@Override
-			public void onSingleTapUp(MotionEvent e) {
-				InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
-				mgr.showSoftInput(mTerminalView, InputMethodManager.SHOW_IMPLICIT);
-			}
-
-			@Override
-			public boolean shouldBackButtonBeMappedToEscape() {
-				return mSettings.mBackIsEscape;
-			}
-
-			@Override
-			public void copyModeChanged(boolean copyMode) {
-				// Disable drawer while copying.
-				getDrawer().setDrawerLockMode(copyMode ? DrawerLayout.LOCK_MODE_LOCKED_CLOSED : DrawerLayout.LOCK_MODE_UNLOCKED);
-			}
-
-		});
-
 		View newSessionButton = findViewById(R.id.new_session_button);
-
 		newSessionButton.setOnClickListener(new OnClickListener() {
 			@Override
 			public void onClick(View v) {
 				addNewSession(false, null);
 			}
 		});
-
         newSessionButton.setOnLongClickListener(new OnLongClickListener() {
             @Override
             public boolean onLongClick(View v) {
@@ -380,9 +310,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
         findViewById(R.id.toggle_keyboard_button).setOnLongClickListener(new OnLongClickListener() {
             @Override
             public boolean onLongClick(View v) {
-                View extraKeysView = findViewById(R.id.viewpager);
+                toggleShowExtraKeys();
-                mSettings.toggleShowExtraKeys(TermuxActivity.this);
-                extraKeysView.setVisibility(mSettings.isShowExtraKeys() ? View.VISIBLE : View.GONE);
                 return true;
             }
         });
@@ -394,11 +322,21 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 		startService(serviceIntent);
 		if (!bindService(serviceIntent, this, 0)) throw new RuntimeException("bindService() failed");
 
-		mTerminalView.checkForFontAndColors();
+		checkForFontAndColors();
 
 		mBellSoundId = mBellSoundPool.load(this, R.raw.bell, 1);
 	}
 
+    void toggleShowExtraKeys() {
+        final ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
+        final boolean showNow = mSettings.toggleShowExtraKeys(TermuxActivity.this);
+        viewPager.setVisibility(showNow ? View.VISIBLE : View.GONE);
+        if (showNow && viewPager.getCurrentItem() == 1) {
+            // Focus the text input view if just revealed.
+            findViewById(R.id.text_input).requestFocus();
+        }
+    }
+
 	/**
 	 * Part of the {@link ServiceConnection} interface. The service is bound with
 	 * {@link #bindService(Intent, ServiceConnection, int)} in {@link #onCreate(Bundle)} which will cause a call to this
@@ -468,6 +406,11 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
 				}
 			}
+
+            @Override
+            public void onColorsChanged(TerminalSession changedSession) {
+                if (getCurrentTermSession() == changedSession) updateBackgroundColor();
+            }
         };
 
 		ListView listView = (ListView) findViewById(R.id.left_drawer_list);
@@ -563,6 +506,17 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 		}
 	}
 
+    public void switchToSession(boolean forward) {
+        TerminalSession currentSession = getCurrentTermSession();
+        int index = mTermService.getSessions().indexOf(currentSession);
+        if (forward) {
+            if (++index >= mTermService.getSessions().size()) index = 0;
+        } else {
+            if (--index < 0) index = mTermService.getSessions().size() - 1;
+        }
+        switchToSession(mTermService.getSessions().get(index));
+    }
+
 	@SuppressLint("InflateParams")
 	void renameSession(final TerminalSession sessionToRename) {
         DialogUtils.textInput(this, R.string.session_rename_title, sessionToRename.mSessionName, R.string.session_rename_positive_button, new DialogUtils.TextSetListener() {
@@ -654,7 +608,10 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 
 	/** Try switching to session and note about it, but do nothing if already displaying the session. */
 	void switchToSession(TerminalSession session) {
-		if (mTerminalView.attachSession(session)) noteSessionInfo();
+		if (mTerminalView.attachSession(session)) {
+            noteSessionInfo();
+            updateBackgroundColor();
+        }
 	}
 
 	String toToastTitle(TerminalSession session) {
@@ -691,7 +648,7 @@ public final class TermuxActivity extends Activity implements ServiceConnection
 		menu.add(Menu.NONE, CONTEXTMENU_SELECT_URL_ID, Menu.NONE, R.string.select_url);
 		menu.add(Menu.NONE, CONTEXTMENU_SHARE_TRANSCRIPT_ID, Menu.NONE, R.string.select_all_and_share);
 		menu.add(Menu.NONE, CONTEXTMENU_RESET_TERMINAL_ID, Menu.NONE, R.string.reset_terminal);
-		menu.add(Menu.NONE, CONTEXTMENU_KILL_PROCESS_ID, Menu.NONE, R.string.kill_process).setEnabled(currentSession.isRunning());
+		menu.add(Menu.NONE, CONTEXTMENU_KILL_PROCESS_ID, Menu.NONE, getResources().getString(R.string.kill_process, getCurrentTermSession().getPid())).setEnabled(currentSession.isRunning());
 		menu.add(Menu.NONE, CONTEXTMENU_TOGGLE_FULLSCREEN_ID, Menu.NONE, R.string.toggle_fullscreen).setCheckable(true).setChecked(mSettings.isFullScreen());
 		menu.add(Menu.NONE, CONTEXTMENU_STYLING_ID, Menu.NONE, R.string.style_terminal);
 		menu.add(Menu.NONE, CONTEXTMENU_HELP_ID, Menu.NONE, R.string.help);

app/src/main/java/com/termux/app/TermuxKeyListener.java

@@ -0,0 +1,283 @@
+package com.termux.app;
+
+import android.content.Context;
+import android.media.AudioManager;
+import android.support.v4.widget.DrawerLayout;
+import android.view.Gravity;
+import android.view.InputDevice;
+import android.view.KeyEvent;
+import android.view.MotionEvent;
+import android.view.inputmethod.InputMethodManager;
+
+import com.termux.terminal.KeyHandler;
+import com.termux.terminal.TerminalEmulator;
+import com.termux.terminal.TerminalSession;
+import com.termux.view.TerminalKeyListener;
+
+import java.util.List;
+
+public final class TermuxKeyListener implements TerminalKeyListener {
+
+    final TermuxActivity mActivity;
+
+    /** Keeping track of the special keys acting as Ctrl and Fn for the soft keyboard and other hardware keys. */
+    boolean mVirtualControlKeyDown, mVirtualFnKeyDown;
+
+    public TermuxKeyListener(TermuxActivity activity) {
+        this.mActivity = activity;
+    }
+
+    @Override
+    public float onScale(float scale) {
+        if (scale < 0.9f || scale > 1.1f) {
+            boolean increase = scale > 1.f;
+            mActivity.changeFontSize(increase);
+            return 1.0f;
+        }
+        return scale;
+    }
+
+    @Override
+    public void onSingleTapUp(MotionEvent e) {
+        InputMethodManager mgr = (InputMethodManager) mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
+        mgr.showSoftInput(mActivity.mTerminalView, InputMethodManager.SHOW_IMPLICIT);
+    }
+
+    @Override
+    public boolean shouldBackButtonBeMappedToEscape() {
+        return mActivity.mSettings.mBackIsEscape;
+    }
+
+    @Override
+    public void copyModeChanged(boolean copyMode) {
+        // Disable drawer while copying.
+        mActivity.getDrawer().setDrawerLockMode(copyMode ? DrawerLayout.LOCK_MODE_LOCKED_CLOSED : DrawerLayout.LOCK_MODE_UNLOCKED);
+    }
+
+    @Override
+    public boolean onKeyDown(int keyCode, KeyEvent e, TerminalSession currentSession) {
+        if (handleVirtualKeys(keyCode, e, true)) return true;
+
+        TermuxService service = mActivity.mTermService;
+
+        if (keyCode == KeyEvent.KEYCODE_ENTER && !currentSession.isRunning()) {
+            // Return pressed with finished session - remove it.
+            currentSession.finishIfRunning();
+
+            int index = service.removeTermSession(currentSession);
+            mActivity.mListViewAdapter.notifyDataSetChanged();
+            if (mActivity.mTermService.getSessions().isEmpty()) {
+                // There are no sessions to show, so finish the activity.
+                mActivity.finish();
+            } else {
+                if (index >= service.getSessions().size()) {
+                    index = service.getSessions().size() - 1;
+                }
+                mActivity.switchToSession(service.getSessions().get(index));
+            }
+            return true;
+        } else if (e.isCtrlPressed() && e.isShiftPressed()) {
+            // Get the unmodified code point:
+            int unicodeChar = e.getUnicodeChar(0);
+
+            if (keyCode == KeyEvent.KEYCODE_DPAD_DOWN || unicodeChar == 'n'/* next */) {
+                mActivity.switchToSession(true);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_UP || unicodeChar == 'p' /* previous */) {
+                mActivity.switchToSession(false);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_RIGHT) {
+                mActivity.getDrawer().openDrawer(Gravity.LEFT);
+            } else if (keyCode == KeyEvent.KEYCODE_DPAD_LEFT) {
+                mActivity.getDrawer().closeDrawers();
+            } else if (unicodeChar == 'f'/* full screen */) {
+                mActivity.toggleImmersive();
+            } else if (unicodeChar == 'k'/* keyboard */) {
+                InputMethodManager imm = (InputMethodManager) mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);
+                imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
+            } else if (unicodeChar == 'm'/* menu */) {
+                mActivity.mTerminalView.showContextMenu();
+            } else if (unicodeChar == 'r'/* rename */) {
+                mActivity.renameSession(currentSession);
+            } else if (unicodeChar == 'c'/* create */) {
+                mActivity.addNewSession(false, null);
+            } else if (unicodeChar == 'u' /* urls */) {
+                mActivity.showUrlSelection();
+            } else if (unicodeChar == 'v') {
+                mActivity.doPaste();
+            } else if (unicodeChar == '+' || e.getUnicodeChar(KeyEvent.META_SHIFT_ON) == '+') {
+                // We also check for the shifted char here since shift may be required to produce '+',
+                // see https://github.com/termux/termux-api/issues/2
+                mActivity.changeFontSize(true);
+            } else if (unicodeChar == '-') {
+                mActivity.changeFontSize(false);
+            } else if (unicodeChar >= '1' && unicodeChar <= '9') {
+                int num = unicodeChar - '1';
+                if (service.getSessions().size() > num) mActivity.switchToSession(service.getSessions().get(num));
+            }
+            return true;
+        }
+
+        return false;
+
+    }
+
+    @Override
+    public boolean onKeyUp(int keyCode, KeyEvent e) {
+        return handleVirtualKeys(keyCode, e, false);
+    }
+
+    @Override
+    public boolean readControlKey() {
+        return (mActivity.mExtraKeysView != null && mActivity.mExtraKeysView.readControlButton()) || mVirtualControlKeyDown;
+    }
+
+    @Override
+    public boolean readAltKey() {
+        return (mActivity.mExtraKeysView != null && mActivity.mExtraKeysView.readAltButton());
+    }
+
+    @Override
+    public boolean onCodePoint(final int codePoint, boolean ctrlDown, TerminalSession session) {
+        if (mVirtualFnKeyDown) {
+            int resultingKeyCode = -1;
+            int resultingCodePoint = -1;
+            boolean altDown = false;
+            int lowerCase = Character.toLowerCase(codePoint);
+            switch (lowerCase) {
+                // Arrow keys.
+                case 'w':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_UP;
+                    break;
+                case 'a':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_LEFT;
+                    break;
+                case 's':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_DOWN;
+                    break;
+                case 'd':
+                    resultingKeyCode = KeyEvent.KEYCODE_DPAD_RIGHT;
+                    break;
+
+                // Page up and down.
+                case 'p':
+                    resultingKeyCode = KeyEvent.KEYCODE_PAGE_UP;
+                    break;
+                case 'n':
+                    resultingKeyCode = KeyEvent.KEYCODE_PAGE_DOWN;
+                    break;
+
+                // Some special keys:
+                case 't':
+                    resultingKeyCode = KeyEvent.KEYCODE_TAB;
+                    break;
+                case 'i':
+                    resultingKeyCode = KeyEvent.KEYCODE_INSERT;
+                    break;
+                case 'h':
+                    resultingKeyCode = KeyEvent.KEYCODE_MOVE_HOME;
+                    break;
+
+                // Special characters to input.
+                case 'u':
+                    resultingCodePoint = '_';
+                    break;
+                case 'l':
+                    resultingCodePoint = '|';
+                    break;
+
+                // Function keys.
+                case '1':
+                case '2':
+                case '3':
+                case '4':
+                case '5':
+                case '6':
+                case '7':
+                case '8':
+                case '9':
+                    resultingKeyCode = (codePoint - '1') + KeyEvent.KEYCODE_F1;
+                    break;
+                case '0':
+                    resultingKeyCode = KeyEvent.KEYCODE_F10;
+                    break;
+
+                // Other special keys.
+                case 'e':
+                    resultingCodePoint = /*Escape*/ 27;
+                    break;
+                case '.':
+                    resultingCodePoint = /*^.*/ 28;
+                    break;
+
+                case 'b': // alt+b, jumping backward in readline.
+                case 'f': // alf+f, jumping forward in readline.
+                case 'x': // alt+x, common in emacs.
+                    resultingCodePoint = lowerCase;
+                    altDown = true;
+                    break;
+
+                // Volume control.
+                case 'v':
+                    resultingCodePoint = -1;
+                    AudioManager audio = (AudioManager) mActivity.getSystemService(Context.AUDIO_SERVICE);
+                    audio.adjustSuggestedStreamVolume(AudioManager.ADJUST_SAME, AudioManager.USE_DEFAULT_STREAM_TYPE, AudioManager.FLAG_SHOW_UI);
+                    break;
+
+                // Writing mode:
+                case 'q':
+                    mActivity.toggleShowExtraKeys();
+                    break;
+            }
+
+            if (resultingKeyCode != -1) {
+                TerminalEmulator term = session.getEmulator();
+                session.write(KeyHandler.getCode(resultingKeyCode, 0, term.isCursorKeysApplicationMode(), term.isKeypadApplicationMode()));
+            } else if (resultingCodePoint != -1) {
+                session.writeCodePoint(altDown, resultingCodePoint);
+            }
+            return true;
+        }  else if (ctrlDown) {
+            List<TermuxPreferences.KeyboardShortcut> shortcuts = mActivity.mSettings.shortcuts;
+            if (!shortcuts.isEmpty()) {
+                for (int i = shortcuts.size() - 1; i >= 0; i--) {
+                    TermuxPreferences.KeyboardShortcut shortcut = shortcuts.get(i);
+                    if (codePoint == shortcut.codePoint) {
+                        switch (shortcut.shortcutAction) {
+                            case TermuxPreferences.SHORTCUT_ACTION_CREATE_SESSION:
+                                mActivity.addNewSession(false, null);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_PREVIOUS_SESSION:
+                                mActivity.switchToSession(false);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_NEXT_SESSION:
+                                mActivity.switchToSession(true);
+                                return true;
+                            case TermuxPreferences.SHORTCUT_ACTION_RENAME_SESSION:
+                                mActivity.renameSession(mActivity.getCurrentTermSession());
+                                return true;
+                        }
+                    }
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /** Handle dedicated volume buttons as virtual keys if applicable. */
+    private boolean handleVirtualKeys(int keyCode, KeyEvent event, boolean down) {
+        InputDevice inputDevice = event.getDevice();
+        if (inputDevice != null && inputDevice.getKeyboardType() == InputDevice.KEYBOARD_TYPE_ALPHABETIC) {
+            // Do not steal dedicated buttons from a full external keyboard.
+            return false;
+        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
+            mVirtualControlKeyDown = down;
+            return true;
+        } else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
+            mVirtualFnKeyDown = down;
+            return true;
+        }
+        return false;
+    }
+
+
+}

app/src/main/java/com/termux/app/TermuxPreferences.java

@@ -14,6 +14,8 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Properties;
 
 final class TermuxPreferences {
@@ -83,9 +85,10 @@ final class TermuxPreferences {
         return mShowExtraKeys;
     }
 
-    void toggleShowExtraKeys(Context context) {
+    boolean toggleShowExtraKeys(Context context) {
         mShowExtraKeys = !mShowExtraKeys;
         PreferenceManager.getDefaultSharedPreferences(context).edit().putBoolean(SHOW_EXTRA_KEYS_KEY, mShowExtraKeys).apply();
+        return mShowExtraKeys;
     }
 
     int getFontSize() {
@@ -123,7 +126,9 @@ final class TermuxPreferences {
 
 	public void reloadFromProperties(Context context) {
 		try {
-			File propsFile = new File(TermuxService.HOME_PATH + "/.config/termux/termux.properties");
+			File propsFile = new File(TermuxService.HOME_PATH + "/.termux/termux.properties");
+            if (!propsFile.exists()) propsFile = new File(TermuxService.HOME_PATH + "/.config/termux/termux.properties");
+
 			Properties props = new Properties();
 			if (propsFile.isFile() && propsFile.canRead()) {
 				try (FileInputStream in = new FileInputStream(propsFile)) {
@@ -144,10 +149,57 @@ final class TermuxPreferences {
 			}
 
 			mBackIsEscape = "escape".equals(props.getProperty("back-key", "back"));
+
+            shortcuts.clear();
+            parseAction("shortcut.create-session", SHORTCUT_ACTION_CREATE_SESSION, props);
+            parseAction("shortcut.next-session", SHORTCUT_ACTION_NEXT_SESSION, props);
+            parseAction("shortcut.previous-session", SHORTCUT_ACTION_PREVIOUS_SESSION, props);
+            parseAction("shortcut.rename-session", SHORTCUT_ACTION_RENAME_SESSION, props);
 		} catch (Exception e) {
 			Toast.makeText(context, "Error loading properties: " + e.getMessage(), Toast.LENGTH_LONG).show();
 			Log.e("termux", "Error loading props", e);
 		}
 	}
 
+    public static final int SHORTCUT_ACTION_CREATE_SESSION = 1;
+    public static final int SHORTCUT_ACTION_NEXT_SESSION = 2;
+    public static final int SHORTCUT_ACTION_PREVIOUS_SESSION = 3;
+    public static final int SHORTCUT_ACTION_RENAME_SESSION = 4;
+
+    public final static class KeyboardShortcut {
+
+        public KeyboardShortcut(int codePoint, int shortcutAction) {
+            this.codePoint = codePoint;
+            this.shortcutAction = shortcutAction;
+        }
+
+        final int codePoint;
+        final int shortcutAction;
+    }
+
+    final List<KeyboardShortcut> shortcuts = new ArrayList<>();
+
+    private void parseAction(String name, int shortcutAction, Properties props) {
+        String value = props.getProperty(name);
+        if (value == null) return;
+        String[] parts = value.trim().split("\\+");
+        String input = parts.length == 2 ? parts[1].trim() : null;
+        if (!(parts.length == 2 && parts[0].trim().equalsIgnoreCase("ctrl")) || input.isEmpty() || input.length() > 2) {
+            Log.e("termux", "Keyboard shortcut '" + name + "' is not Ctrl+<something>");
+            return;
+        }
+
+        char c = input.charAt(0);
+        int codePoint = c;
+        if (Character.isLowSurrogate(c)) {
+            if (input.length() != 2 || Character.isHighSurrogate(input.charAt(1))) {
+                Log.e("termux", "Keyboard shortcut '" + name + "' is not Ctrl+<something>");
+                return;
+            } else {
+                codePoint = Character.toCodePoint(input.charAt(1), c);
+            }
+        }
+        shortcuts.add(new KeyboardShortcut(codePoint, shortcutAction));
+    }
+
 }

app/src/main/java/com/termux/app/TermuxService.java

@@ -352,4 +352,9 @@ public final class TermuxService extends Service implements SessionChangedCallba
 		if (mSessionChangeCallback != null) mSessionChangeCallback.onBell(session);
 	}
 
+    @Override
+    public void onColorsChanged(TerminalSession session) {
+        if (mSessionChangeCallback != null) mSessionChangeCallback.onColorsChanged(session);
+    }
+
 }

app/src/main/java/com/termux/terminal/TerminalEmulator.java

@@ -1816,6 +1816,7 @@ public final class TerminalEmulator {
 							return;
 						} else {
 							mColors.tryParseColor(colorIndex, textParameter.substring(parsingPairStart, i));
+                            mSession.onColorsChanged();
 							colorIndex = -1;
 							parsingPairStart = -1;
 						}
@@ -1851,6 +1852,7 @@ public final class TerminalEmulator {
 									+ String.format(Locale.US, "%04x", b) + bellOrStringTerminator);
 						} else {
 							mColors.tryParseColor(specialIndex, colorSpec);
+                            mSession.onColorsChanged();
 						}
 						specialIndex++;
 						if (endOfInput || (specialIndex > TextStyle.COLOR_INDEX_CURSOR) || ++charIndex >= textParameter.length()) break;
@@ -1877,6 +1879,7 @@ public final class TerminalEmulator {
 			// parameters are given, the entire table will be reset.
 			if (textParameter.isEmpty()) {
 				mColors.reset();
+                mSession.onColorsChanged();
 			} else {
 				int lastIndex = 0;
 				for (int charIndex = 0;; charIndex++) {
@@ -1885,6 +1888,7 @@ public final class TerminalEmulator {
 						try {
 							int colorToReset = Integer.parseInt(textParameter.substring(lastIndex, charIndex));
 							mColors.reset(colorToReset);
+                            mSession.onColorsChanged();
 							if (endOfInput) break;
 							charIndex++;
 							lastIndex = charIndex;
@@ -1899,6 +1903,7 @@ public final class TerminalEmulator {
 		case 111: // Reset background color.
 		case 112: // Reset cursor color.
 			mColors.reset(TextStyle.COLOR_INDEX_FOREGROUND + (value - 110));
+            mSession.onColorsChanged();
 			break;
 		case 119: // Reset highlight color.
 			break;
@@ -2273,6 +2278,7 @@ public final class TerminalEmulator {
 		mUtf8Index = mUtf8ToFollow = 0;
 
 		mColors.reset();
+        mSession.onColorsChanged();
 	}
 
 	public String getSelectedText(int x1, int y1, int x2, int y2) {

app/src/main/java/com/termux/terminal/TerminalOutput.java

@@ -23,4 +23,6 @@ public abstract class TerminalOutput {
 	/** Notify the terminal client that a bell character (ASCII 7, bell, BEL, \a, ^G)) has been received. */
 	public abstract void onBell();
 
+    public abstract void onColorsChanged();
+
 }

app/src/main/java/com/termux/terminal/TerminalSession.java

@@ -41,6 +41,9 @@ public final class TerminalSession extends TerminalOutput {
 		void onClipboardText(TerminalSession session, String text);
 
 		void onBell(TerminalSession session);
+
+        void onColorsChanged(TerminalSession session);
+
 	}
 
 	private static FileDescriptor wrapFileDescriptor(int fileDescriptor) {
@@ -329,4 +332,11 @@ public final class TerminalSession extends TerminalOutput {
 		mChangeCallback.onBell(this);
 	}
 
+    @Override
+    public void onColorsChanged() {
+        mChangeCallback.onColorsChanged(this);
+    }
+
+    public int getPid() { return mShellPid; }
+
 }

app/src/main/java/com/termux/view/TerminalKeyListener.java

@@ -1,8 +1,11 @@
 package com.termux.view;
 
+import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.ScaleGestureDetector;
 
+import com.termux.terminal.TerminalSession;
+
 /**
  * Input and scale listener which may be set on a {@link TerminalView} through
  * {@link TerminalView#setOnKeyListener(TerminalKeyListener)}.
@@ -21,4 +24,14 @@ public interface TerminalKeyListener {
 
 	void copyModeChanged(boolean copyMode);
 
+    boolean onKeyDown(int keyCode, KeyEvent e, TerminalSession session);
+
+    boolean onKeyUp(int keyCode, KeyEvent e);
+
+    boolean readControlKey();
+
+    boolean readAltKey();
+
+    boolean onCodePoint(int codePoint, boolean ctrlDown, TerminalSession session);
+
 }

app/src/main/java/com/termux/view/TerminalRenderer.java

@@ -64,8 +64,7 @@ final class TerminalRenderer {
 		final TerminalBuffer screen = mEmulator.getScreen();
 		final int[] palette = mEmulator.mColors.mCurrentColors;
 
-		int fillColor = palette[reverseVideo ? TextStyle.COLOR_INDEX_FOREGROUND : TextStyle.COLOR_INDEX_BACKGROUND];
+		if (reverseVideo) canvas.drawColor(palette[TextStyle.COLOR_INDEX_FOREGROUND], PorterDuff.Mode.SRC);
-		canvas.drawColor(fillColor, PorterDuff.Mode.SRC);
 
 		float heightOffset = mFontLineSpacingAndAscent;
 		for (int row = topRow; row < endRow; row++) {

app/src/main/java/com/termux/view/TerminalView.java

@@ -10,7 +10,6 @@ import android.graphics.Canvas;
 import android.graphics.Rect;
 import android.graphics.Typeface;
 import android.graphics.drawable.BitmapDrawable;
-import android.media.AudioManager;
 import android.os.Build;
 import android.text.InputType;
 import android.text.TextUtils;
@@ -34,28 +33,15 @@ import com.termux.R;
 import com.termux.terminal.EmulatorDebug;
 import com.termux.terminal.KeyHandler;
 import com.termux.terminal.TerminalBuffer;
-import com.termux.terminal.TerminalColors;
 import com.termux.terminal.TerminalEmulator;
 import com.termux.terminal.TerminalSession;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.InputStream;
-import java.util.Properties;
-
 /** View displaying and interacting with a {@link TerminalSession}. */
 public final class TerminalView extends View {
 
     /** Log view key and IME events. */
     private static final boolean LOG_KEY_EVENTS = false;
 
-    public interface KeyboardModifiers {
-        boolean readControlButton();
-        boolean readAltButton();
-    }
-
-    public KeyboardModifiers mModifiers;
-
 	/** The currently displayed terminal session, whose emulator is {@link #mEmulator}. */
 	TerminalSession mTermSession;
 	/** Our terminal emulator whose session is {@link #mTermSession}. */
@@ -68,9 +54,6 @@ public final class TerminalView extends View {
 	/** The top row of text to display. Ranges from -activeTranscriptRows to 0. */
 	int mTopRow;
 
-	/** Keeping track of the special keys acting as Ctrl and Fn for the soft keyboard and other hardware keys. */
-	boolean mVirtualControlKeyDown, mVirtualFnKeyDown;
-
 	boolean mIsSelectingText = false, mIsDraggingLeftSelection, mInitialTextSelection;
 	int mSelX1 = -1, mSelX2 = -1, mSelY1 = -1, mSelY2 = -1;
 	float mSelectionDownX, mSelectionDownY;
@@ -245,10 +228,13 @@ public final class TerminalView extends View {
 		//
 		// If using just "TYPE_NULL", there is a problem with the "Google Pinyin Input" being in
 		// word mode when used with the "En" tab available when the "Show English keyboard" option
-		// is enabled - see https://github.com/termux/termux-packages/issues/25.
+		// is enabled - see https://github.com/termux/termux-packages/issues/25. It also causes
+        // the normal Google keyboard to show a row of numbers, see
+        // https://github.com/termux/termux-app/issues/87
 		//
-		// Adding TYPE_TEXT_FLAG_NO_SUGGESTIONS fixes Pinyin Input, put causes Swype to be put in
+		// Adding TYPE_TEXT_FLAG_NO_SUGGESTIONS fixes Pinyin Input and removes the row of numbers
-		// word mode... Using TYPE_TEXT_VARIATION_VISIBLE_PASSWORD fixes that.
+        // on the Google keyboard. . It also causes Swype to be put in
+		// word mode, but using TYPE_TEXT_VARIATION_VISIBLE_PASSWORD fixes that.
 		//
 		// So a bit messy. If this gets too messy it's perhaps best resolved by reverting back to just
 		// "TYPE_NULL" and let the Pinyin Input english keyboard be in word mode.
@@ -259,22 +245,14 @@ public final class TerminalView extends View {
 
 		return new BaseInputConnection(this, true) {
 
-			@Override
-			public boolean beginBatchEdit() {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: beginBatchEdit()");
-				return true;
-			}
-
-			@Override
-			public boolean endBatchEdit() {
-				if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: endBatchEdit()");
-				return false;
-			}
-
             @Override
             public boolean finishComposingText() {
                 if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: finishComposingText()");
                 commitText(getEditable(), 0);
+
+                // Clear the editable.
+                getEditable().clear();
+
                 return true;
             }
 
@@ -296,8 +274,23 @@ public final class TerminalView extends View {
 					} else {
 						codePoint = firstChar;
 					}
-					inputCodePoint(codePoint, false, false);
+
+                    boolean ctrlHeld = false;
+                    if (codePoint <= 31 && codePoint != 27) {
+                        // E.g. penti keyboard for ctrl input.
+                        ctrlHeld = true;
+                        switch (codePoint) {
+                            case 31: codePoint = '_'; break;
+                            case 30: codePoint = '^'; break;
+                            case 29: codePoint = ']'; break;
+                            case 28: codePoint = '\\'; break;
+                            default: codePoint += 96; break;
                         }
+                    }
+
+                    inputCodePoint(codePoint, ctrlHeld, false);
+				}
+
                 return true;
 			}
 
@@ -313,6 +306,17 @@ public final class TerminalView extends View {
 				return true;
 			}
 
+            @Override
+            public boolean setComposingText(CharSequence text, int newCursorPosition) {
+                if (text.length() == 0) {
+                    // Avoid log spam "SpannableStringBuilder: SPAN_EXCLUSIVE_EXCLUSIVE spans cannot
+                    // have a zero length" when backspacing with the Google keyboard.
+                    getEditable().clear();
+                } else {
+                    super.setComposingText(text, newCursorPosition);
+                }
+                return true;
+            }
         };
 	}
 
@@ -378,6 +382,12 @@ public final class TerminalView extends View {
 		updateSize();
 	}
 
+    public void setTypeface(Typeface newTypeface) {
+        mRenderer = new TerminalRenderer(mRenderer.mTextSize, newTypeface);
+        updateSize();
+        invalidate();
+    }
+
 	@Override
 	public boolean onCheckIsTextEditor() {
 		return true;
@@ -546,18 +556,21 @@ public final class TerminalView extends View {
 		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyDown(keyCode=" + keyCode + ", isSystem()=" + event.isSystem() + ", event=" + event + ")");
 		if (mEmulator == null) return true;
 
-		int metaState = event.getMetaState();
+		if (mOnKeyListener.onKeyDown(keyCode, event, mTermSession)) {
-		boolean controlDownFromEvent = event.isCtrlPressed();
-		boolean leftAltDownFromEvent = (metaState & KeyEvent.META_ALT_LEFT_ON) != 0;
-		boolean rightAltDownFromEvent = (metaState & KeyEvent.META_ALT_RIGHT_ON) != 0;
-
-		if (handleVirtualKeys(keyCode, event, true)) {
 			invalidate();
 			return true;
 		} else if (event.isSystem() && (!mOnKeyListener.shouldBackButtonBeMappedToEscape() || keyCode != KeyEvent.KEYCODE_BACK)) {
 			return super.onKeyDown(keyCode, event);
+		} else if (event.getAction() == KeyEvent.ACTION_MULTIPLE && keyCode == KeyEvent.KEYCODE_UNKNOWN) {
+            mTermSession.write(event.getCharacters());
+            return true;
         }
 
+        final int metaState = event.getMetaState();
+        final boolean controlDownFromEvent = event.isCtrlPressed();
+        final boolean leftAltDownFromEvent = (metaState & KeyEvent.META_ALT_LEFT_ON) != 0;
+        final boolean rightAltDownFromEvent = (metaState & KeyEvent.META_ALT_RIGHT_ON) != 0;
+
         int keyMod = 0;
 		if (controlDownFromEvent) keyMod |= KeyHandler.KEYMOD_CTRL;
 		if (event.isAltPressed()) keyMod |= KeyHandler.KEYMOD_ALT;
@@ -608,14 +621,11 @@ public final class TerminalView extends View {
 					+ leftAltDownFromEvent + ")");
 		}
 
-        boolean controlDown = controlDownFromEvent || mVirtualControlKeyDown;
+        final boolean controlDown = controlDownFromEvent || mOnKeyListener.readControlKey();
-        boolean altDown = leftAltDownFromEvent;
+        final boolean altDown = leftAltDownFromEvent || mOnKeyListener.readAltKey();
-        if (mModifiers != null) {
+
-            if (mModifiers.readControlButton()) controlDown = true;
+        if (mOnKeyListener.onCodePoint(codePoint, controlDown, mTermSession)) return;
-            if (mModifiers.readAltButton()) altDown = true;
-        }
 
-		int resultingKeyCode = -1; // Set if virtual key causes this to be translated to key event.
         if (controlDown) {
 			if (codePoint >= 'a' && codePoint <= 'z') {
 				codePoint = codePoint - 'a' + 1;
@@ -635,67 +645,10 @@ public final class TerminalView extends View {
 				codePoint = 31;
 			} else if (codePoint == '8') {
 				codePoint = 127; // DEL
-			} else if (codePoint == '9') {
-				resultingKeyCode = KeyEvent.KEYCODE_F11;
-			} else if (codePoint == '0') {
-				resultingKeyCode = KeyEvent.KEYCODE_F12;
-			}
-		} else if (mVirtualFnKeyDown) {
-            int lowerCase = Character.toLowerCase(codePoint);
-            switch (lowerCase) {
-                // Arrow keys.
-                case 'w': resultingKeyCode = KeyEvent.KEYCODE_DPAD_UP; break;
-                case 'a': resultingKeyCode = KeyEvent.KEYCODE_DPAD_LEFT; break;
-                case 's': resultingKeyCode = KeyEvent.KEYCODE_DPAD_DOWN; break;
-                case 'd': resultingKeyCode = KeyEvent.KEYCODE_DPAD_RIGHT; break;
-
-                // Page up and down.
-                case 'p': resultingKeyCode = KeyEvent.KEYCODE_PAGE_UP; break;
-                case 'n': resultingKeyCode = KeyEvent.KEYCODE_PAGE_DOWN; break;
-
-                // Some special keys:
-                case 't': resultingKeyCode = KeyEvent.KEYCODE_TAB; break;
-                case 'i': resultingKeyCode = KeyEvent.KEYCODE_INSERT; break;
-                case 'h': resultingKeyCode = KeyEvent.KEYCODE_MOVE_HOME; break;
-
-                // Special characters to input.
-                case 'u': codePoint = '_'; break;
-                case 'l': codePoint = '|'; break;
-
-                // Function keys.
-                case '1': case '2': case '3':
-                case '4': case '5': case '6':
-                case '7': case '8': case '9':
-                    resultingKeyCode = (codePoint - '1') + KeyEvent.KEYCODE_F1;
-                    break;
-                case '0':
-                    resultingKeyCode = KeyEvent.KEYCODE_F10;
-                    break;
-
-                // Other special keys.
-                case 'e': codePoint = /*Escape*/ 27; break;
-                case '.': codePoint = /*^.*/ 28; break;
-
-                case 'b': // alt+b, jumping backward in readline.
-                case 'f': // alf+f, jumping forward in readline.
-                case 'x': // alt+x, common in emacs.
-                    codePoint = lowerCase;
-                    altDown = true;
-                    break;
-
-                // Volume control.
-                case 'v':
-                    codePoint = -1;
-                    AudioManager audio = (AudioManager) getContext().getSystemService(Context.AUDIO_SERVICE);
-                    audio.adjustSuggestedStreamVolume(AudioManager.ADJUST_SAME, AudioManager.USE_DEFAULT_STREAM_TYPE, AudioManager.FLAG_SHOW_UI);
-                    break;
 			}
 		}
 
         if (codePoint > -1) {
-			if (resultingKeyCode > -1) {
-				handleKeyCode(resultingKeyCode, 0);
-			} else {
             // Work around bluetooth keyboards sending funny unicode characters instead
             // of the more normal ones from ASCII that terminal programs expect - the
             // desire to input the original characters should be low.
@@ -715,7 +668,6 @@ public final class TerminalView extends View {
             mTermSession.writeCodePoint(altDown, codePoint);
         }
     }
-	}
 
 	/** Input the specified keyCode if applicable and return if the input was consumed. */
 	public boolean handleKeyCode(int keyCode, int keyMod) {
@@ -740,7 +692,7 @@ public final class TerminalView extends View {
 		if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyUp(keyCode=" + keyCode + ", event=" + event + ")");
 		if (mEmulator == null) return true;
 
-		if (handleVirtualKeys(keyCode, event, false)) {
+		if (mOnKeyListener.onKeyUp(keyCode, event)) {
 			invalidate();
 			return true;
 		} else if (event.isSystem()) {
@@ -751,49 +703,6 @@ public final class TerminalView extends View {
 		return true;
 	}
 
-	/** Handle dedicated volume buttons as virtual keys if applicable. */
-	private boolean handleVirtualKeys(int keyCode, KeyEvent event, boolean down) {
-		InputDevice inputDevice = event.getDevice();
-		if (inputDevice != null && inputDevice.getKeyboardType() == InputDevice.KEYBOARD_TYPE_ALPHABETIC) {
-			// Do not steal dedicated buttons from a full external keyboard.
-			return false;
-		} else if (keyCode == KeyEvent.KEYCODE_VOLUME_DOWN) {
-			if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "handleVirtualKeys(down=" + down + ") taking ctrl event");
-			mVirtualControlKeyDown = down;
-			return true;
-		} else if (keyCode == KeyEvent.KEYCODE_VOLUME_UP) {
-			if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "handleVirtualKeys(down=" + down + ") taking Fn event");
-			mVirtualFnKeyDown = down;
-			return true;
-		}
-		return false;
-	}
-
-	public void checkForFontAndColors() {
-		try {
-            // Hard-coded paths since this file is used also in Termux:Float.
-            @SuppressLint("SdCardPath") File fontFile = new File("/data/data/com.termux/files/home/.termux/font.ttf");
-            @SuppressLint("SdCardPath") File colorsFile = new File("/data/data/com.termux/files/home/.termux/colors.properties");
-
-			final Properties props = new Properties();
-			if (colorsFile.isFile()) {
-				try (InputStream in = new FileInputStream(colorsFile)) {
-					props.load(in);
-				}
-			}
-			TerminalColors.COLOR_SCHEME.updateWith(props);
-			if (mEmulator != null) mEmulator.mColors.reset();
-
-			final Typeface newTypeface = (fontFile.exists() && fontFile.length() > 0) ? Typeface.createFromFile(fontFile) : Typeface.MONOSPACE;
-			mRenderer = new TerminalRenderer(mRenderer.mTextSize, newTypeface);
-			updateSize();
-
-			invalidate();
-		} catch (Exception e) {
-			Log.e(EmulatorDebug.LOG_TAG, "Error in checkForFontAndColors()", e);
-		}
-	}
-
 	/**
 	 * This is called during layout when the size of this view has changed. If you were just added to the view
 	 * hierarchy, you're called with the old values of 0.

app/src/main/res/layout/extra_keys_right.xml

@@ -9,7 +9,6 @@
     android:inputType="text"
     android:singleLine="true"
     android:textColor="@android:color/white"
-    android:backgroundTint="@android:color/transparent"
     android:paddingTop="0dp"
     android:textCursorDrawable="@null"
     android:paddingBottom="0dp"