package com.termux.view; import android.annotation.SuppressLint; import android.annotation.TargetApi; import android.content.ClipData; import android.content.ClipboardManager; import android.content.Context; import android.graphics.Canvas; import android.graphics.Typeface; import android.os.Build; import android.text.Editable; import android.text.InputType; import android.text.TextUtils; import android.util.AttributeSet; import android.view.ActionMode; import android.view.HapticFeedbackConstants; import android.view.InputDevice; import android.view.KeyCharacterMap; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewTreeObserver; import android.view.accessibility.AccessibilityManager; import android.view.autofill.AutofillValue; import android.view.inputmethod.BaseInputConnection; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputConnection; import android.widget.Scroller; import androidx.annotation.RequiresApi; import com.termux.terminal.KeyHandler; import com.termux.terminal.TerminalEmulator; import com.termux.terminal.TerminalSession; import com.termux.view.textselection.TextSelectionCursorController; /** View displaying and interacting with a {@link TerminalSession}. */ public final class TerminalView extends View { /** Log terminal view key and IME events. */ private static boolean TERMINAL_VIEW_KEY_LOGGING_ENABLED = false; /** The currently displayed terminal session, whose emulator is {@link #mEmulator}. */ public TerminalSession mTermSession; /** Our terminal emulator whose session is {@link #mTermSession}. */ public TerminalEmulator mEmulator; public TerminalRenderer mRenderer; public TerminalViewClient mClient; private TextSelectionCursorController mTextSelectionCursorController; /** The top row of text to display. Ranges from -activeTranscriptRows to 0. */ int mTopRow; int[] mDefaultSelectors = new int[]{-1,-1,-1,-1}; float mScaleFactor = 1.f; final GestureAndScaleRecognizer mGestureRecognizer; /** Keep track of where mouse touch event started which we report as mouse scroll. */ private int mMouseScrollStartX = -1, mMouseScrollStartY = -1; /** Keep track of the time when a touch event leading to sending mouse scroll events started. */ private long mMouseStartDownTime = -1; final Scroller mScroller; /** What was left in from scrolling movement. */ float mScrollRemainder; /** If non-zero, this is the last unicode code point received if that was a combining character. */ int mCombiningAccent; private final boolean mAccessibilityEnabled; private static final String LOG_TAG = "TerminalView"; public TerminalView(Context context, AttributeSet attributes) { // NO_UCD (unused code) super(context, attributes); mGestureRecognizer = new GestureAndScaleRecognizer(context, new GestureAndScaleRecognizer.Listener() { boolean scrolledWithFinger; @Override public boolean onUp(MotionEvent event) { mScrollRemainder = 0.0f; if (mEmulator != null && mEmulator.isMouseTrackingActive() && !isSelectingText() && !scrolledWithFinger) { // Quick event processing when mouse tracking is active - do not wait for check of double tapping // for zooming. sendMouseEventCode(event, TerminalEmulator.MOUSE_LEFT_BUTTON, true); sendMouseEventCode(event, TerminalEmulator.MOUSE_LEFT_BUTTON, false); return true; } scrolledWithFinger = false; return false; } @Override public boolean onSingleTapUp(MotionEvent event) { if (mEmulator == null) return true; if (isSelectingText()) { stopTextSelectionMode(); return true; } requestFocus(); if (!mEmulator.isMouseTrackingActive()) { if (!event.isFromSource(InputDevice.SOURCE_MOUSE)) { mClient.onSingleTapUp(event); return true; } } return false; } @Override public boolean onScroll(MotionEvent e, float distanceX, float distanceY) { if (mEmulator == null) return true; if (mEmulator.isMouseTrackingActive() && e.isFromSource(InputDevice.SOURCE_MOUSE)) { // If moving with mouse pointer while pressing button, report that instead of scroll. // This means that we never report moving with button press-events for touch input, // since we cannot just start sending these events without a starting press event, // which we do not do for touch input, only mouse in onTouchEvent(). sendMouseEventCode(e, TerminalEmulator.MOUSE_LEFT_BUTTON_MOVED, true); } else { scrolledWithFinger = true; distanceY += mScrollRemainder; int deltaRows = (int) (distanceY / mRenderer.mFontLineSpacing); mScrollRemainder = distanceY - deltaRows * mRenderer.mFontLineSpacing; doScroll(e, deltaRows); } return true; } @Override public boolean onScale(float focusX, float focusY, float scale) { if (mEmulator == null || isSelectingText()) return true; mScaleFactor *= scale; mScaleFactor = mClient.onScale(mScaleFactor); return true; } @Override public boolean onFling(final MotionEvent e2, float velocityX, float velocityY) { if (mEmulator == null) return true; // Do not start scrolling until last fling has been taken care of: if (!mScroller.isFinished()) return true; final boolean mouseTrackingAtStartOfFling = mEmulator.isMouseTrackingActive(); float SCALE = 0.25f; if (mouseTrackingAtStartOfFling) { mScroller.fling(0, 0, 0, -(int) (velocityY * SCALE), 0, 0, -mEmulator.mRows / 2, mEmulator.mRows / 2); } else { mScroller.fling(0, mTopRow, 0, -(int) (velocityY * SCALE), 0, 0, -mEmulator.getScreen().getActiveTranscriptRows(), 0); } post(new Runnable() { private int mLastY = 0; @Override public void run() { if (mouseTrackingAtStartOfFling != mEmulator.isMouseTrackingActive()) { mScroller.abortAnimation(); return; } if (mScroller.isFinished()) return; boolean more = mScroller.computeScrollOffset(); int newY = mScroller.getCurrY(); int diff = mouseTrackingAtStartOfFling ? (newY - mLastY) : (newY - mTopRow); doScroll(e2, diff); mLastY = newY; if (more) post(this); } }); return true; } @Override public boolean onDown(float x, float y) { // Why is true not returned here? // https://developer.android.com/training/gestures/detector.html#detect-a-subset-of-supported-gestures // Although setting this to true still does not solve the following errors when long pressing in terminal view text area // ViewDragHelper: Ignoring pointerId=0 because ACTION_DOWN was not received for this pointer before ACTION_MOVE // Commenting out the call to mGestureDetector.onTouchEvent(event) in GestureAndScaleRecognizer#onTouchEvent() removes // the error logging, so issue is related to GestureDetector return false; } @Override public boolean onDoubleTap(MotionEvent event) { // Do not treat is as a single confirmed tap - it may be followed by zoom. return false; } @Override public void onLongPress(MotionEvent event) { if (mGestureRecognizer.isInProgress()) return; if (mClient.onLongPress(event)) return; if (!isSelectingText()) { performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); startTextSelectionMode(event); } } }); mScroller = new Scroller(context); AccessibilityManager am = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE); mAccessibilityEnabled = am.isEnabled(); } /** * @param client The {@link TerminalViewClient} interface implementation to allow * for communication between {@link TerminalView} and its client. */ public void setTerminalViewClient(TerminalViewClient client) { this.mClient = client; } /** * Sets terminal view key logging is enabled or not. * * @param value The boolean value that defines the state. */ public void setIsTerminalViewKeyLoggingEnabled(boolean value) { TERMINAL_VIEW_KEY_LOGGING_ENABLED = value; } /** * Attach a {@link TerminalSession} to this view. * * @param session The {@link TerminalSession} this view will be displaying. */ public boolean attachSession(TerminalSession session) { if (session == mTermSession) return false; mTopRow = 0; mTermSession = session; mEmulator = null; mCombiningAccent = 0; updateSize(); // Wait with enabling the scrollbar until we have a terminal to get scroll position from. setVerticalScrollBarEnabled(true); return true; } @Override public InputConnection onCreateInputConnection(EditorInfo outAttrs) { if (mClient.shouldEnforceCharBasedInput()) { // Some keyboards seems do not reset the internal state on TYPE_NULL. // Affects mostly Samsung stock keyboards. // https://github.com/termux/termux-app/issues/686 outAttrs.inputType = InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD | InputType.TYPE_TEXT_FLAG_NO_SUGGESTIONS; } else { // Using InputType.NULL is the most correct input type and avoids issues with other hacks. // // Previous keyboard issues: // https://github.com/termux/termux-packages/issues/25 // https://github.com/termux/termux-app/issues/87. // https://github.com/termux/termux-app/issues/126. // https://github.com/termux/termux-app/issues/137 (japanese chars and TYPE_NULL). outAttrs.inputType = InputType.TYPE_NULL; } // Note that IME_ACTION_NONE cannot be used as that makes it impossible to input newlines using the on-screen // keyboard on Android TV (see https://github.com/termux/termux-app/issues/221). outAttrs.imeOptions = EditorInfo.IME_FLAG_NO_FULLSCREEN; return new BaseInputConnection(this, true) { @Override public boolean finishComposingText() { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "IME: finishComposingText()"); super.finishComposingText(); sendTextToTerminal(getEditable()); getEditable().clear(); return true; } @Override public boolean commitText(CharSequence text, int newCursorPosition) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) { mClient.logInfo(LOG_TAG, "IME: commitText(\"" + text + "\", " + newCursorPosition + ")"); } super.commitText(text, newCursorPosition); if (mEmulator == null) return true; Editable content = getEditable(); sendTextToTerminal(content); content.clear(); return true; } @Override public boolean deleteSurroundingText(int leftLength, int rightLength) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) { mClient.logInfo(LOG_TAG, "IME: deleteSurroundingText(" + leftLength + ", " + rightLength + ")"); } // The stock Samsung keyboard with 'Auto check spelling' enabled sends leftLength > 1. KeyEvent deleteKey = new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_DEL); for (int i = 0; i < leftLength; i++) sendKeyEvent(deleteKey); return super.deleteSurroundingText(leftLength, rightLength); } void sendTextToTerminal(CharSequence text) { stopTextSelectionMode(); final int textLengthInChars = text.length(); for (int i = 0; i < textLengthInChars; i++) { char firstChar = text.charAt(i); int codePoint; if (Character.isHighSurrogate(firstChar)) { if (++i < textLengthInChars) { codePoint = Character.toCodePoint(firstChar, text.charAt(i)); } else { // At end of string, with no low surrogate following the high: codePoint = TerminalEmulator.UNICODE_REPLACEMENT_CHAR; } } else { codePoint = firstChar; } boolean ctrlHeld = false; if (codePoint <= 31 && codePoint != 27) { if (codePoint == '\n') { // The AOSP keyboard and descendants seems to send \n as text when the enter key is pressed, // instead of a key event like most other keyboard apps. A terminal expects \r for the enter // key (although when icrnl is enabled this doesn't make a difference - run 'stty -icrnl' to // check the behaviour). codePoint = '\r'; } // 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); } } }; } @Override protected int computeVerticalScrollRange() { return mEmulator == null ? 1 : mEmulator.getScreen().getActiveRows(); } @Override protected int computeVerticalScrollExtent() { return mEmulator == null ? 1 : mEmulator.mRows; } @Override protected int computeVerticalScrollOffset() { return mEmulator == null ? 1 : mEmulator.getScreen().getActiveRows() + mTopRow - mEmulator.mRows; } public void onScreenUpdated() { if (mEmulator == null) return; int rowsInHistory = mEmulator.getScreen().getActiveTranscriptRows(); if (mTopRow < -rowsInHistory) mTopRow = -rowsInHistory; boolean skipScrolling = false; if (isSelectingText()) { // Do not scroll when selecting text. int rowShift = mEmulator.getScrollCounter(); if (-mTopRow + rowShift > rowsInHistory) { // .. unless we're hitting the end of history transcript, in which // case we abort text selection and scroll to end. stopTextSelectionMode(); } else { skipScrolling = true; mTopRow -= rowShift; decrementYTextSelectionCursors(rowShift); } } if (!skipScrolling && mTopRow != 0) { // Scroll down if not already there. if (mTopRow < -3) { // Awaken scroll bars only if scrolling a noticeable amount // - we do not want visible scroll bars during normal typing // of one row at a time. awakenScrollBars(); } mTopRow = 0; } mEmulator.clearScrollCounter(); invalidate(); if (mAccessibilityEnabled) setContentDescription(getText()); } /** * Sets the text size, which in turn sets the number of rows and columns. * * @param textSize the new font size, in density-independent pixels. */ public void setTextSize(int textSize) { mRenderer = new TerminalRenderer(textSize, mRenderer == null ? Typeface.MONOSPACE : mRenderer.mTypeface); updateSize(); } public void setTypeface(Typeface newTypeface) { mRenderer = new TerminalRenderer(mRenderer.mTextSize, newTypeface); updateSize(); invalidate(); } @Override public boolean onCheckIsTextEditor() { return true; } @Override public boolean isOpaque() { return true; } /** Send a single mouse event code to the terminal. */ void sendMouseEventCode(MotionEvent e, int button, boolean pressed) { int x = (int) (e.getX() / mRenderer.mFontWidth) + 1; int y = (int) ((e.getY() - mRenderer.mFontLineSpacingAndAscent) / mRenderer.mFontLineSpacing) + 1; if (pressed && (button == TerminalEmulator.MOUSE_WHEELDOWN_BUTTON || button == TerminalEmulator.MOUSE_WHEELUP_BUTTON)) { if (mMouseStartDownTime == e.getDownTime()) { x = mMouseScrollStartX; y = mMouseScrollStartY; } else { mMouseStartDownTime = e.getDownTime(); mMouseScrollStartX = x; mMouseScrollStartY = y; } } mEmulator.sendMouseEvent(button, x, y, pressed); } /** Perform a scroll, either from dragging the screen or by scrolling a mouse wheel. */ void doScroll(MotionEvent event, int rowsDown) { boolean up = rowsDown < 0; int amount = Math.abs(rowsDown); for (int i = 0; i < amount; i++) { if (mEmulator.isMouseTrackingActive()) { sendMouseEventCode(event, up ? TerminalEmulator.MOUSE_WHEELUP_BUTTON : TerminalEmulator.MOUSE_WHEELDOWN_BUTTON, true); } else if (mEmulator.isAlternateBufferActive()) { // Send up and down key events for scrolling, which is what some terminals do to make scroll work in // e.g. less, which shifts to the alt screen without mouse handling. handleKeyCode(up ? KeyEvent.KEYCODE_DPAD_UP : KeyEvent.KEYCODE_DPAD_DOWN, 0); } else { mTopRow = Math.min(0, Math.max(-(mEmulator.getScreen().getActiveTranscriptRows()), mTopRow + (up ? -1 : 1))); if (!awakenScrollBars()) invalidate(); } } } /** Overriding {@link View#onGenericMotionEvent(MotionEvent)}. */ @Override public boolean onGenericMotionEvent(MotionEvent event) { if (mEmulator != null && event.isFromSource(InputDevice.SOURCE_MOUSE) && event.getAction() == MotionEvent.ACTION_SCROLL) { // Handle mouse wheel scrolling. boolean up = event.getAxisValue(MotionEvent.AXIS_VSCROLL) > 0.0f; doScroll(event, up ? -3 : 3); return true; } return false; } @SuppressLint("ClickableViewAccessibility") @Override @TargetApi(23) public boolean onTouchEvent(MotionEvent event) { if (mEmulator == null) return true; final int action = event.getAction(); if (isSelectingText()) { updateFloatingToolbarVisibility(event); mGestureRecognizer.onTouchEvent(event); return true; } else if (event.isFromSource(InputDevice.SOURCE_MOUSE)) { if (event.isButtonPressed(MotionEvent.BUTTON_SECONDARY)) { if (action == MotionEvent.ACTION_DOWN) showContextMenu(); return true; } else if (event.isButtonPressed(MotionEvent.BUTTON_TERTIARY)) { ClipboardManager clipboard = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE); ClipData clipData = clipboard.getPrimaryClip(); if (clipData != null) { CharSequence paste = clipData.getItemAt(0).coerceToText(getContext()); if (!TextUtils.isEmpty(paste)) mEmulator.paste(paste.toString()); } } else if (mEmulator.isMouseTrackingActive()) { // BUTTON_PRIMARY. switch (event.getAction()) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_UP: sendMouseEventCode(event, TerminalEmulator.MOUSE_LEFT_BUTTON, event.getAction() == MotionEvent.ACTION_DOWN); break; case MotionEvent.ACTION_MOVE: sendMouseEventCode(event, TerminalEmulator.MOUSE_LEFT_BUTTON_MOVED, true); break; } return true; } } mGestureRecognizer.onTouchEvent(event); return true; } @Override public boolean onKeyPreIme(int keyCode, KeyEvent event) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "onKeyPreIme(keyCode=" + keyCode + ", event=" + event + ")"); if (keyCode == KeyEvent.KEYCODE_BACK) { if (isSelectingText()) { stopTextSelectionMode(); return true; } else if (mClient.shouldBackButtonBeMappedToEscape()) { // Intercept back button to treat it as escape: switch (event.getAction()) { case KeyEvent.ACTION_DOWN: return onKeyDown(keyCode, event); case KeyEvent.ACTION_UP: return onKeyUp(keyCode, event); } } } else if (mClient.shouldUseCtrlSpaceWorkaround() && keyCode == KeyEvent.KEYCODE_SPACE && event.isCtrlPressed()) { /* ctrl+space does not work on some ROMs without this workaround. However, this breaks it on devices where it works out of the box. */ return onKeyDown(keyCode, event); } return super.onKeyPreIme(keyCode, event); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "onKeyDown(keyCode=" + keyCode + ", isSystem()=" + event.isSystem() + ", event=" + event + ")"); if (mEmulator == null) return true; if (isSelectingText()) { stopTextSelectionMode(); } if (mClient.onKeyDown(keyCode, event, mTermSession)) { invalidate(); return true; } else if (event.isSystem() && (!mClient.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 controlDown = event.isCtrlPressed() || mClient.readControlKey(); final boolean leftAltDown = (metaState & KeyEvent.META_ALT_LEFT_ON) != 0 || mClient.readAltKey(); final boolean rightAltDownFromEvent = (metaState & KeyEvent.META_ALT_RIGHT_ON) != 0; int keyMod = 0; if (controlDown) keyMod |= KeyHandler.KEYMOD_CTRL; if (event.isAltPressed() || leftAltDown) keyMod |= KeyHandler.KEYMOD_ALT; if (event.isShiftPressed()) keyMod |= KeyHandler.KEYMOD_SHIFT; if (event.isNumLockOn()) keyMod |= KeyHandler.KEYMOD_NUM_LOCK; if (!event.isFunctionPressed() && handleKeyCode(keyCode, keyMod)) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "handleKeyCode() took key event"); return true; } // Clear Ctrl since we handle that ourselves: int bitsToClear = KeyEvent.META_CTRL_MASK; if (rightAltDownFromEvent) { // Let right Alt/Alt Gr be used to compose characters. } else { // Use left alt to send to terminal (e.g. Left Alt+B to jump back a word), so remove: bitsToClear |= KeyEvent.META_ALT_ON | KeyEvent.META_ALT_LEFT_ON; } int effectiveMetaState = event.getMetaState() & ~bitsToClear; int result = event.getUnicodeChar(effectiveMetaState); if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "KeyEvent#getUnicodeChar(" + effectiveMetaState + ") returned: " + result); if (result == 0) { return false; } int oldCombiningAccent = mCombiningAccent; if ((result & KeyCharacterMap.COMBINING_ACCENT) != 0) { // If entered combining accent previously, write it out: if (mCombiningAccent != 0) inputCodePoint(mCombiningAccent, controlDown, leftAltDown); mCombiningAccent = result & KeyCharacterMap.COMBINING_ACCENT_MASK; } else { if (mCombiningAccent != 0) { int combinedChar = KeyCharacterMap.getDeadChar(mCombiningAccent, result); if (combinedChar > 0) result = combinedChar; mCombiningAccent = 0; } inputCodePoint(result, controlDown, leftAltDown); } if (mCombiningAccent != oldCombiningAccent) invalidate(); return true; } public void inputCodePoint(int codePoint, boolean controlDownFromEvent, boolean leftAltDownFromEvent) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) { mClient.logInfo(LOG_TAG, "inputCodePoint(codePoint=" + codePoint + ", controlDownFromEvent=" + controlDownFromEvent + ", leftAltDownFromEvent=" + leftAltDownFromEvent + ")"); } if (mTermSession == null) return; final boolean controlDown = controlDownFromEvent || mClient.readControlKey(); final boolean altDown = leftAltDownFromEvent || mClient.readAltKey(); if (mClient.onCodePoint(codePoint, controlDown, mTermSession)) return; if (controlDown) { if (codePoint >= 'a' && codePoint <= 'z') { codePoint = codePoint - 'a' + 1; } else if (codePoint >= 'A' && codePoint <= 'Z') { codePoint = codePoint - 'A' + 1; } else if (codePoint == ' ' || codePoint == '2') { codePoint = 0; } else if (codePoint == '[' || codePoint == '3') { codePoint = 27; // ^[ (Esc) } else if (codePoint == '\\' || codePoint == '4') { codePoint = 28; } else if (codePoint == ']' || codePoint == '5') { codePoint = 29; } else if (codePoint == '^' || codePoint == '6') { codePoint = 30; // control-^ } else if (codePoint == '_' || codePoint == '7' || codePoint == '/') { // "Ctrl-/ sends 0x1f which is equivalent of Ctrl-_ since the days of VT102" // - http://apple.stackexchange.com/questions/24261/how-do-i-send-c-that-is-control-slash-to-the-terminal codePoint = 31; } else if (codePoint == '8') { codePoint = 127; // DEL } } if (codePoint > -1) { // 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. switch (codePoint) { case 0x02DC: // SMALL TILDE. codePoint = 0x007E; // TILDE (~). break; case 0x02CB: // MODIFIER LETTER GRAVE ACCENT. codePoint = 0x0060; // GRAVE ACCENT (`). break; case 0x02C6: // MODIFIER LETTER CIRCUMFLEX ACCENT. codePoint = 0x005E; // CIRCUMFLEX ACCENT (^). break; } // If left alt, send escape before the code point to make e.g. Alt+B and Alt+F work in readline: mTermSession.writeCodePoint(altDown, codePoint); } } /** Input the specified keyCode if applicable and return if the input was consumed. */ public boolean handleKeyCode(int keyCode, int keyMod) { TerminalEmulator term = mTermSession.getEmulator(); String code = KeyHandler.getCode(keyCode, keyMod, term.isCursorKeysApplicationMode(), term.isKeypadApplicationMode()); if (code == null) return false; mTermSession.write(code); return true; } /** * Called when a key is released in the view. * * @param keyCode The keycode of the key which was released. * @param event A {@link KeyEvent} describing the event. * @return Whether the event was handled. */ @Override public boolean onKeyUp(int keyCode, KeyEvent event) { if (TERMINAL_VIEW_KEY_LOGGING_ENABLED) mClient.logInfo(LOG_TAG, "onKeyUp(keyCode=" + keyCode + ", event=" + event + ")"); if (mEmulator == null) return true; if (mClient.onKeyUp(keyCode, event)) { invalidate(); return true; } else if (event.isSystem()) { // Let system key events through. return super.onKeyUp(keyCode, event); } return true; } /** * 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. */ @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { updateSize(); } /** Check if the terminal size in rows and columns should be updated. */ public void updateSize() { int viewWidth = getWidth(); int viewHeight = getHeight(); if (viewWidth == 0 || viewHeight == 0 || mTermSession == null) return; // Set to 80 and 24 if you want to enable vttest. int newColumns = Math.max(4, (int) (viewWidth / mRenderer.mFontWidth)); int newRows = Math.max(4, (viewHeight - mRenderer.mFontLineSpacingAndAscent) / mRenderer.mFontLineSpacing); if (mEmulator == null || (newColumns != mEmulator.mColumns || newRows != mEmulator.mRows)) { mTermSession.updateSize(newColumns, newRows); mEmulator = mTermSession.getEmulator(); mTopRow = 0; scrollTo(0, 0); invalidate(); } } @Override protected void onDraw(Canvas canvas) { if (mEmulator == null) { canvas.drawColor(0XFF000000); } else { // render the terminal view and highlight any selected text int[] sel = mDefaultSelectors; if (mTextSelectionCursorController != null) { mTextSelectionCursorController.getSelectors(sel); } mRenderer.render(mEmulator, canvas, mTopRow, sel[0], sel[1], sel[2], sel[3]); // render the text selection handles renderTextSelection(); } } public TerminalSession getCurrentSession() { return mTermSession; } private CharSequence getText() { return mEmulator.getScreen().getSelectedText(0, mTopRow, mEmulator.mColumns, mTopRow + mEmulator.mRows); } public int getCursorX(float x) { return (int) (x / mRenderer.mFontWidth); } public int getCursorY(float y) { return (int) (((y - 40) / mRenderer.mFontLineSpacing) + mTopRow); } public int getPointX(int cx) { if (cx > mEmulator.mColumns) { cx = mEmulator.mColumns; } return Math.round(cx * mRenderer.mFontWidth); } public int getPointY(int cy) { return Math.round((cy - mTopRow) * mRenderer.mFontLineSpacing); } public int getTopRow() { return mTopRow; } public void setTopRow(int mTopRow) { this.mTopRow = mTopRow; } /** * Define functions required for AutoFill API */ @RequiresApi(api = Build.VERSION_CODES.O) @Override public void autofill(AutofillValue value) { if (value.isText()) { mTermSession.write(value.getTextValue().toString()); } } @RequiresApi(api = Build.VERSION_CODES.O) @Override public int getAutofillType() { return AUTOFILL_TYPE_TEXT; } @RequiresApi(api = Build.VERSION_CODES.O) @Override public AutofillValue getAutofillValue() { return AutofillValue.forText(""); } /** * Define functions required for text selection and its handles. */ TextSelectionCursorController getTextSelectionCursorController() { if (mTextSelectionCursorController == null) { mTextSelectionCursorController = new TextSelectionCursorController(this); final ViewTreeObserver observer = getViewTreeObserver(); if (observer != null) { observer.addOnTouchModeChangeListener(mTextSelectionCursorController); } } return mTextSelectionCursorController; } private void showTextSelectionCursors(MotionEvent event) { getTextSelectionCursorController().show(event); } private boolean hideTextSelectionCursors() { return getTextSelectionCursorController().hide(); } private void renderTextSelection() { if (mTextSelectionCursorController != null) mTextSelectionCursorController.render(); } public boolean isSelectingText() { if (mTextSelectionCursorController != null) { return mTextSelectionCursorController.isActive(); } else { return false; } } private ActionMode getTextSelectionActionMode() { if (mTextSelectionCursorController != null) { return mTextSelectionCursorController.getActionMode(); } else { return null; } } public void startTextSelectionMode(MotionEvent event) { if (!requestFocus()) { return; } showTextSelectionCursors(event); mClient.copyModeChanged(isSelectingText()); invalidate(); } public void stopTextSelectionMode() { if (hideTextSelectionCursors()) { mClient.copyModeChanged(isSelectingText()); invalidate(); } } private void decrementYTextSelectionCursors(int decrement) { if (mTextSelectionCursorController != null) { mTextSelectionCursorController.decrementYTextSelectionCursors(decrement); } } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); if (mTextSelectionCursorController != null) { getViewTreeObserver().addOnTouchModeChangeListener(mTextSelectionCursorController); } } @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); if (mTextSelectionCursorController != null) { // Might solve the following exception // android.view.WindowLeaked: Activity com.termux.app.TermuxActivity has leaked window android.widget.PopupWindow stopTextSelectionMode(); getViewTreeObserver().removeOnTouchModeChangeListener(mTextSelectionCursorController); mTextSelectionCursorController.onDetached(); } } /** * Define functions required for long hold toolbar. */ private final Runnable mShowFloatingToolbar = new Runnable() { @Override public void run() { if (getTextSelectionActionMode() != null) { getTextSelectionActionMode().hide(0); // hide off. } } }; private void showFloatingToolbar() { if (getTextSelectionActionMode() != null) { int delay = ViewConfiguration.getDoubleTapTimeout(); postDelayed(mShowFloatingToolbar, delay); } } void hideFloatingToolbar() { if (getTextSelectionActionMode() != null) { removeCallbacks(mShowFloatingToolbar); getTextSelectionActionMode().hide(-1); } } public void updateFloatingToolbarVisibility(MotionEvent event) { if (getTextSelectionActionMode() != null) { switch (event.getActionMasked()) { case MotionEvent.ACTION_MOVE: hideFloatingToolbar(); break; case MotionEvent.ACTION_UP: // fall through case MotionEvent.ACTION_CANCEL: showFloatingToolbar(); } } } }