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.Rect; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.os.Build; import android.os.SystemClock; import android.text.Editable; import android.text.InputType; import android.text.TextUtils; import android.util.AttributeSet; import android.util.Log; import android.view.ActionMode; import android.view.HapticFeedbackConstants; import android.view.InputDevice; import android.view.KeyCharacterMap; import android.view.KeyEvent; import android.view.Menu; import android.view.MenuItem; import android.view.MotionEvent; import android.view.View; import android.view.ViewConfiguration; import android.view.ViewGroup; import android.view.ViewParent; import android.view.ViewTreeObserver; import android.view.WindowManager; import android.view.accessibility.AccessibilityManager; import android.view.inputmethod.BaseInputConnection; import android.view.inputmethod.EditorInfo; import android.view.inputmethod.InputConnection; import android.widget.PopupWindow; import android.widget.Scroller; import com.termux.terminal.EmulatorDebug; import com.termux.terminal.KeyHandler; import com.termux.terminal.TerminalBuffer; import com.termux.terminal.TerminalEmulator; import com.termux.terminal.TerminalSession; /** 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; /** The currently displayed terminal session, whose emulator is {@link #mEmulator}. */ TerminalSession mTermSession; /** Our terminal emulator whose session is {@link #mTermSession}. */ TerminalEmulator mEmulator; TerminalRenderer mRenderer; TerminalViewClient mClient; /** The top row of text to display. Ranges from -activeTranscriptRows to 0. */ int mTopRow; boolean mIsSelectingText = false; int mSelX1 = -1, mSelX2 = -1, mSelY1 = -1, mSelY2 = -1; private ActionMode mActionMode; Drawable mSelectHandleLeft; Drawable mSelectHandleRight; final int[] mTempCoords = new int[2]; Rect mTempRect; private SelectionModifierCursorController mSelectionModifierCursorController; 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 boolean mAccessibilityEnabled; 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 e) { mScrollRemainder = 0.0f; if (mEmulator != null && mEmulator.isMouseTrackingActive() && !mIsSelectingText && !scrolledWithFinger) { // Quick event processing when mouse tracking is active - do not wait for check of double tapping // for zooming. sendMouseEventCode(e, TerminalEmulator.MOUSE_LEFT_BUTTON, true); sendMouseEventCode(e, TerminalEmulator.MOUSE_LEFT_BUTTON, false); return true; } scrolledWithFinger = false; return false; } @Override public boolean onSingleTapUp(MotionEvent e) { if (mEmulator == null) return true; if (mIsSelectingText) { stopTextSelectionMode(); return true; } requestFocus(); if (!mEmulator.isMouseTrackingActive()) { if (!e.isFromSource(InputDevice.SOURCE_MOUSE)) { mClient.onSingleTapUp(e); 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 || mIsSelectingText) 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) { return false; } @Override public boolean onDoubleTap(MotionEvent e) { // Do not treat is as a single confirmed tap - it may be followed by zoom. return false; } @Override public void onLongPress(MotionEvent e) { if (mGestureRecognizer.isInProgress()) return; if (mClient.onLongPress(e)) return; if (!mIsSelectingText) { performHapticFeedback(HapticFeedbackConstants.LONG_PRESS); startSelectingText(e); } } }); mScroller = new Scroller(context); AccessibilityManager am = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE); mAccessibilityEnabled = am.isEnabled(); } /** * @param onKeyListener Listener for all kinds of key events, both hardware and IME (which makes it different from that * available with {@link View#setOnKeyListener(OnKeyListener)}. */ public void setOnKeyListener(TerminalViewClient onKeyListener) { this.mClient = onKeyListener; } /** * 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) { // 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 (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "IME: finishComposingText()"); super.finishComposingText(); sendTextToTerminal(getEditable()); getEditable().clear(); return true; } @Override public boolean commitText(CharSequence text, int newCursorPosition) { if (LOG_KEY_EVENTS) { Log.i(EmulatorDebug.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 (LOG_KEY_EVENTS) { Log.i(EmulatorDebug.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 (mIsSelectingText) { // 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; mSelY1 -= rowShift; mSelY2 -= 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 ev) { if (mEmulator == null) return true; final int action = ev.getAction(); if (mIsSelectingText) { updateFloatingToolbarVisibility(ev); mGestureRecognizer.onTouchEvent(ev); return true; } else if (ev.isFromSource(InputDevice.SOURCE_MOUSE)) { if (ev.isButtonPressed(MotionEvent.BUTTON_SECONDARY)) { if (action == MotionEvent.ACTION_DOWN) showContextMenu(); return true; } else if (ev.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 (ev.getAction()) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_UP: sendMouseEventCode(ev, TerminalEmulator.MOUSE_LEFT_BUTTON, ev.getAction() == MotionEvent.ACTION_DOWN); break; case MotionEvent.ACTION_MOVE: sendMouseEventCode(ev, TerminalEmulator.MOUSE_LEFT_BUTTON_MOVED, true); break; } return true; } } mGestureRecognizer.onTouchEvent(ev); return true; } @Override public boolean onKeyPreIme(int keyCode, KeyEvent event) { if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyPreIme(keyCode=" + keyCode + ", event=" + event + ")"); if (keyCode == KeyEvent.KEYCODE_BACK) { if (mIsSelectingText) { 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); } } } return super.onKeyPreIme(keyCode, event); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.LOG_TAG, "onKeyDown(keyCode=" + keyCode + ", isSystem()=" + event.isSystem() + ", event=" + event + ")"); if (mEmulator == null) return true; 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 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; if (event.isShiftPressed()) keyMod |= KeyHandler.KEYMOD_SHIFT; if (!event.isFunctionPressed() && handleKeyCode(keyCode, keyMod)) { if (LOG_KEY_EVENTS) Log.i(EmulatorDebug.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 (LOG_KEY_EVENTS) Log.i(EmulatorDebug.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, controlDownFromEvent, leftAltDownFromEvent); 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, controlDownFromEvent, leftAltDownFromEvent); } if (mCombiningAccent != oldCombiningAccent) invalidate(); return true; } void inputCodePoint(int codePoint, boolean controlDownFromEvent, boolean leftAltDownFromEvent) { if (LOG_KEY_EVENTS) { Log.i(EmulatorDebug.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 (LOG_KEY_EVENTS) Log.i(EmulatorDebug.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 { mRenderer.render(mEmulator, canvas, mTopRow, mSelY1, mSelY2, mSelX1, mSelX2); SelectionModifierCursorController selectionController = getSelectionController(); if (selectionController != null && selectionController.isActive()) { selectionController.updatePosition(); } } } /** Toggle text selection mode in the view. */ @TargetApi(23) public void startSelectingText(MotionEvent ev) { int cx = (int) (ev.getX() / mRenderer.mFontWidth); final boolean eventFromMouse = ev.isFromSource(InputDevice.SOURCE_MOUSE); // Offset for finger: final int SELECT_TEXT_OFFSET_Y = eventFromMouse ? 0 : -40; int cy = (int) ((ev.getY() + SELECT_TEXT_OFFSET_Y) / mRenderer.mFontLineSpacing) + mTopRow; mSelX1 = mSelX2 = cx; mSelY1 = mSelY2 = cy; TerminalBuffer screen = mEmulator.getScreen(); if (!" ".equals(screen.getSelectedText(mSelX1, mSelY1, mSelX1, mSelY1))) { // Selecting something other than whitespace. Expand to word. while (mSelX1 > 0 && !"".equals(screen.getSelectedText(mSelX1 - 1, mSelY1, mSelX1 - 1, mSelY1))) { mSelX1--; } while (mSelX2 < mEmulator.mColumns - 1 && !"".equals(screen.getSelectedText(mSelX2 + 1, mSelY1, mSelX2 + 1, mSelY1))) { mSelX2++; } } startTextSelectionMode(); } public TerminalSession getCurrentSession() { return mTermSession; } private CharSequence getText() { return mEmulator.getScreen().getSelectedText(0, mTopRow, mEmulator.mColumns, mTopRow + mEmulator.mRows); } @Override protected void onAttachedToWindow() { super.onAttachedToWindow(); if (mSelectionModifierCursorController != null) { getViewTreeObserver().addOnTouchModeChangeListener(mSelectionModifierCursorController); } } @Override protected void onDetachedFromWindow() { super.onDetachedFromWindow(); if (mSelectionModifierCursorController != null) { getViewTreeObserver().removeOnTouchModeChangeListener(mSelectionModifierCursorController); mSelectionModifierCursorController.onDetached(); } } private int getCursorX(float x) { return (int) (x / mRenderer.mFontWidth); } private int getCursorY(float y) { return (int) (((y - 40) / mRenderer.mFontLineSpacing) + mTopRow); } private int getPointX(int cx) { if (cx > mEmulator.mColumns) { cx = mEmulator.mColumns; } return Math.round(cx * mRenderer.mFontWidth); } private int getPointY(int cy) { return Math.round((cy - mTopRow) * mRenderer.mFontLineSpacing); } /** * A CursorController instance can be used to control a cursor in the text. * It is not used outside of {@link TerminalView}. */ private interface CursorController extends ViewTreeObserver.OnTouchModeChangeListener { /** * Makes the cursor controller visible on screen. Will be drawn by {@link #draw(Canvas)}. * See also {@link #hide()}. */ void show(); /** * Hide the cursor controller from screen. * See also {@link #show()}. */ void hide(); /** * @return true if the CursorController is currently visible */ boolean isActive(); /** * Update the controller's position. */ void updatePosition(HandleView handle, int x, int y); void updatePosition(); /** * This method is called by {@link #onTouchEvent(MotionEvent)} and gives the controller * a chance to become active and/or visible. * * @param event The touch event */ boolean onTouchEvent(MotionEvent event); /** * Called when the view is detached from window. Perform house keeping task, such as * stopping Runnable thread that would otherwise keep a reference on the context, thus * preventing the activity to be recycled. */ void onDetached(); } private class HandleView extends View { private Drawable mDrawable; private PopupWindow mContainer; private int mPointX; private int mPointY; private CursorController mController; private boolean mIsDragging; private float mTouchToWindowOffsetX; private float mTouchToWindowOffsetY; private float mHotspotX; private float mHotspotY; private float mTouchOffsetY; private int mLastParentX; private int mLastParentY; int mHandleWidth; private final int mOrigOrient; private int mOrientation; public static final int LEFT = 0; public static final int RIGHT = 2; private int mHandleHeight; private long mLastTime; public HandleView(CursorController controller, int orientation) { super(TerminalView.this.getContext()); mController = controller; mContainer = new PopupWindow(TerminalView.this.getContext(), null, android.R.attr.textSelectHandleWindowStyle); mContainer.setSplitTouchEnabled(true); mContainer.setClippingEnabled(false); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { mContainer.setWindowLayoutType(WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL); } mContainer.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT); mContainer.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT); this.mOrigOrient = orientation; setOrientation(orientation); } public void setOrientation(int orientation) { mOrientation = orientation; int handleWidth = 0; switch (orientation) { case LEFT: { if (mSelectHandleLeft == null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { mSelectHandleLeft = getContext().getDrawable( R.drawable.text_select_handle_left_material); } else { mSelectHandleLeft = getContext().getResources().getDrawable( R.drawable.text_select_handle_left_material); } } // mDrawable = mSelectHandleLeft; handleWidth = mDrawable.getIntrinsicWidth(); mHotspotX = (handleWidth * 3) / 4; break; } case RIGHT: { if (mSelectHandleRight == null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { mSelectHandleRight = getContext().getDrawable( R.drawable.text_select_handle_right_material); } else { mSelectHandleRight = getContext().getResources().getDrawable( R.drawable.text_select_handle_right_material); } } mDrawable = mSelectHandleRight; handleWidth = mDrawable.getIntrinsicWidth(); mHotspotX = handleWidth / 4; break; } } mHandleHeight = mDrawable.getIntrinsicHeight(); mHandleWidth = handleWidth; mTouchOffsetY = -mHandleHeight * 0.3f; mHotspotY = 0; invalidate(); } public void changeOrientation(int orientation) { if (mOrientation != orientation) { setOrientation(orientation); } } @Override public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { setMeasuredDimension(mDrawable.getIntrinsicWidth(), mDrawable.getIntrinsicHeight()); } public void show() { if (!isPositionVisible()) { hide(); return; } mContainer.setContentView(this); final int[] coords = mTempCoords; TerminalView.this.getLocationInWindow(coords); coords[0] += mPointX; coords[1] += mPointY; mContainer.showAtLocation(TerminalView.this, 0, coords[0], coords[1]); } public void hide() { mIsDragging = false; mContainer.dismiss(); } public boolean isShowing() { return mContainer.isShowing(); } private void checkChangedOrientation() { long millis = SystemClock.currentThreadTimeMillis(); if (millis - mLastTime < 50) { return; } mLastTime = millis; final TerminalView hostView = TerminalView.this; final int left = hostView.getLeft(); final int right = hostView.getWidth(); final int top = hostView.getTop(); final int bottom = hostView.getHeight(); if (mTempRect == null) { mTempRect = new Rect(); } final Rect clip = mTempRect; clip.left = left + TerminalView.this.getPaddingLeft(); clip.top = top + TerminalView.this.getPaddingTop(); clip.right = right - TerminalView.this.getPaddingRight(); clip.bottom = bottom - TerminalView.this.getPaddingBottom(); final ViewParent parent = hostView.getParent(); if (parent == null || !parent.getChildVisibleRect(hostView, clip, null)) { return; } final int[] coords = mTempCoords; hostView.getLocationInWindow(coords); final int posX = coords[0] + mPointX; if (posX < clip.left) { changeOrientation(RIGHT); } else if (posX + mHandleWidth > clip.right) { changeOrientation(LEFT); } else { changeOrientation(mOrigOrient); } } private boolean isPositionVisible() { // Always show a dragging handle. if (mIsDragging) { return true; } final TerminalView hostView = TerminalView.this; final int left = 0; final int right = hostView.getWidth(); final int top = 0; final int bottom = hostView.getHeight(); if (mTempRect == null) { mTempRect = new Rect(); } final Rect clip = mTempRect; clip.left = left + TerminalView.this.getPaddingLeft(); clip.top = top + TerminalView.this.getPaddingTop(); clip.right = right - TerminalView.this.getPaddingRight(); clip.bottom = bottom - TerminalView.this.getPaddingBottom(); final ViewParent parent = hostView.getParent(); if (parent == null || !parent.getChildVisibleRect(hostView, clip, null)) { return false; } final int[] coords = mTempCoords; hostView.getLocationInWindow(coords); final int posX = coords[0] + mPointX + (int) mHotspotX; final int posY = coords[1] + mPointY + (int) mHotspotY; return posX >= clip.left && posX <= clip.right && posY >= clip.top && posY <= clip.bottom; } private void moveTo(int x, int y) { mPointX = x; mPointY = y; checkChangedOrientation(); if (isPositionVisible()) { int[] coords = null; if (mContainer.isShowing()) { coords = mTempCoords; TerminalView.this.getLocationInWindow(coords); int x1 = coords[0] + mPointX; int y1 = coords[1] + mPointY; mContainer.update(x1, y1, getWidth(), getHeight()); } else { show(); } if (mIsDragging) { if (coords == null) { coords = mTempCoords; TerminalView.this.getLocationInWindow(coords); } if (coords[0] != mLastParentX || coords[1] != mLastParentY) { mTouchToWindowOffsetX += coords[0] - mLastParentX; mTouchToWindowOffsetY += coords[1] - mLastParentY; mLastParentX = coords[0]; mLastParentY = coords[1]; } } } else { if (isShowing()) { hide(); } } } @Override public void onDraw(Canvas c) { final int drawWidth = mDrawable.getIntrinsicWidth(); int height = mDrawable.getIntrinsicHeight(); mDrawable.setBounds(0, 0, drawWidth, height); mDrawable.draw(c); } @SuppressLint("ClickableViewAccessibility") @Override public boolean onTouchEvent(MotionEvent ev) { updateFloatingToolbarVisibility(ev); switch (ev.getActionMasked()) { case MotionEvent.ACTION_DOWN: { final float rawX = ev.getRawX(); final float rawY = ev.getRawY(); mTouchToWindowOffsetX = rawX - mPointX; mTouchToWindowOffsetY = rawY - mPointY; final int[] coords = mTempCoords; TerminalView.this.getLocationInWindow(coords); mLastParentX = coords[0]; mLastParentY = coords[1]; mIsDragging = true; break; } case MotionEvent.ACTION_MOVE: { final float rawX = ev.getRawX(); final float rawY = ev.getRawY(); final float newPosX = rawX - mTouchToWindowOffsetX + mHotspotX; final float newPosY = rawY - mTouchToWindowOffsetY + mHotspotY + mTouchOffsetY; mController.updatePosition(this, Math.round(newPosX), Math.round(newPosY)); break; } case MotionEvent.ACTION_UP: case MotionEvent.ACTION_CANCEL: mIsDragging = false; } return true; } public boolean isDragging() { return mIsDragging; } void positionAtCursor(final int cx, final int cy) { int left = (int) (getPointX(cx) - mHotspotX); int bottom = getPointY(cy + 1); moveTo(left, bottom); } } private class SelectionModifierCursorController implements CursorController { private final int mHandleHeight; // The cursor controller images private HandleView mStartHandle, mEndHandle; // Whether selection anchors are active private boolean mIsShowing; SelectionModifierCursorController() { mStartHandle = new HandleView(this, HandleView.LEFT); mEndHandle = new HandleView(this, HandleView.RIGHT); mHandleHeight = Math.max(mStartHandle.mHandleHeight, mEndHandle.mHandleHeight); } public void show() { mIsShowing = true; updatePosition(); mStartHandle.show(); mEndHandle.show(); final ActionMode.Callback callback = new ActionMode.Callback() { @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { int show = MenuItem.SHOW_AS_ACTION_ALWAYS | MenuItem.SHOW_AS_ACTION_WITH_TEXT; ClipboardManager clipboard = (ClipboardManager) getContext().getSystemService(Context.CLIPBOARD_SERVICE); menu.add(Menu.NONE, 1, Menu.NONE, R.string.copy_text).setShowAsAction(show); menu.add(Menu.NONE, 2, Menu.NONE, R.string.paste_text).setEnabled(clipboard.hasPrimaryClip()).setShowAsAction(show); menu.add(Menu.NONE, 3, Menu.NONE, R.string.text_selection_more); return true; } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { if (!mIsSelectingText) { // Fix issue where the dialog is pressed while being dismissed. return true; } switch (item.getItemId()) { case 1: String selectedText = mEmulator.getSelectedText(mSelX1, mSelY1, mSelX2, mSelY2).trim(); mTermSession.clipboardText(selectedText); break; case 2: 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()); } break; case 3: showContextMenu(); break; } stopTextSelectionMode(); return true; } @Override public void onDestroyActionMode(ActionMode mode) { } }; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { mActionMode = startActionMode(new ActionMode.Callback2() { @Override public boolean onCreateActionMode(ActionMode mode, Menu menu) { return callback.onCreateActionMode(mode, menu); } @Override public boolean onPrepareActionMode(ActionMode mode, Menu menu) { return false; } @Override public boolean onActionItemClicked(ActionMode mode, MenuItem item) { return callback.onActionItemClicked(mode, item); } @Override public void onDestroyActionMode(ActionMode mode) { // Ignore. } @Override public void onGetContentRect(ActionMode mode, View view, Rect outRect) { int x1 = Math.round(mSelX1 * mRenderer.mFontWidth); int x2 = Math.round(mSelX2 * mRenderer.mFontWidth); int y1 = Math.round((mSelY1 - mTopRow) * mRenderer.mFontLineSpacing); int y2 = Math.round((mSelY2 + 1 - mTopRow) * mRenderer.mFontLineSpacing); if (x1 > x2) { int tmp = x1; x1 = x2; x2 = tmp; } outRect.set(x1, y1 + mHandleHeight, x2, y2 + mHandleHeight); } }, ActionMode.TYPE_FLOATING); } else { mActionMode = startActionMode(callback); } } public void hide() { mStartHandle.hide(); mEndHandle.hide(); mIsShowing = false; if (mActionMode != null) { // This will hide the mSelectionModifierCursorController mActionMode.finish(); } } public boolean isActive() { return mIsShowing; } public void updatePosition(HandleView handle, int x, int y) { final int scrollRows = mEmulator.getScreen().getActiveRows() - mEmulator.mRows; if (y < mRenderer.mFontLineSpacing) {//up mTopRow--; if (mTopRow < -scrollRows) { mTopRow = -scrollRows; } } else if (y + 2 * mRenderer.mFontLineSpacing > TerminalView.this.getHeight()) {//down mTopRow++; if (mTopRow > 0) { mTopRow = 0; } } if (handle == mStartHandle) { mSelX1 = getCursorX(x); mSelY1 = getCursorY(y); if (mSelX1 < 0) { mSelX1 = 0; } if (mSelY1 < -scrollRows) { mSelY1 = -scrollRows; } else if (mSelY1 > mEmulator.mRows - 1) { mSelY1 = mEmulator.mRows - 1; } if (mSelY1 > mSelY2) { mSelY1 = mSelY2; } if (mSelY1 == mSelY2 && mSelX1 > mSelX2) { mSelX1 = mSelX2; } } else { mSelX2 = getCursorX(x); mSelY2 = getCursorY(y); if (mSelX2 < 0) { mSelX2 = 0; } if (mSelY2 < -scrollRows) { mSelY2 = -scrollRows; } else if (mSelY2 > mEmulator.mRows - 1) { mSelY2 = mEmulator.mRows - 1; } if (mSelY1 > mSelY2) { mSelY2 = mSelY1; } if (mSelY1 == mSelY2 && mSelX1 > mSelX2) { mSelX2 = mSelX1; } } invalidate(); } public void updatePosition() { if (!isActive()) { return; } mStartHandle.positionAtCursor(mSelX1, mSelY1); mEndHandle.positionAtCursor(mSelX2 + 1, mSelY2); if (mActionMode != null) { mActionMode.invalidate(); } } public boolean onTouchEvent(MotionEvent event) { return false; } /** * @return true iff this controller is currently used to move the selection start. */ public boolean isSelectionStartDragged() { return mStartHandle.isDragging(); } public boolean isSelectionEndDragged() { return mEndHandle.isDragging(); } public void onTouchModeChanged(boolean isInTouchMode) { if (!isInTouchMode) { hide(); } } @Override public void onDetached() { } } SelectionModifierCursorController getSelectionController() { if (mSelectionModifierCursorController == null) { mSelectionModifierCursorController = new SelectionModifierCursorController(); final ViewTreeObserver observer = getViewTreeObserver(); if (observer != null) { observer.addOnTouchModeChangeListener(mSelectionModifierCursorController); } } return mSelectionModifierCursorController; } private void hideSelectionModifierCursorController() { if (mSelectionModifierCursorController != null && mSelectionModifierCursorController.isActive()) { mSelectionModifierCursorController.hide(); } } private void startTextSelectionMode() { if (!requestFocus()) { return; } getSelectionController().show(); mIsSelectingText = true; mClient.copyModeChanged(mIsSelectingText); invalidate(); } private void stopTextSelectionMode() { if (mIsSelectingText) { hideSelectionModifierCursorController(); mSelX1 = mSelY1 = mSelX2 = mSelY2 = -1; mIsSelectingText = false; mClient.copyModeChanged(mIsSelectingText); invalidate(); } } private final Runnable mShowFloatingToolbar = new Runnable() { @Override public void run() { if (mActionMode != null) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { mActionMode.hide(0); // hide off. } } } }; void hideFloatingToolbar(int duration) { if (mActionMode != null) { removeCallbacks(mShowFloatingToolbar); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { mActionMode.hide(duration); } } } private void showFloatingToolbar() { if (mActionMode != null) { int delay = ViewConfiguration.getDoubleTapTimeout(); postDelayed(mShowFloatingToolbar, delay); } } private void updateFloatingToolbarVisibility(MotionEvent event) { if (mActionMode != null) { switch (event.getActionMasked()) { case MotionEvent.ACTION_MOVE: hideFloatingToolbar(-1); break; case MotionEvent.ACTION_UP: // fall through case MotionEvent.ACTION_CANCEL: showFloatingToolbar(); } } } }