/**
* Something changed in our parent {@link TerminalView}, maybe it's a new parent, or maybe it's an
* updated font size. We should recalculate terminal size information and request a PTY resize.
*/
public final synchronized void parentChanged(TerminalView parent) {
if (manager != null && !manager.isResizeAllowed()) {
Log.d(TAG, "Resize is not allowed now");
return;
}
this.parent = parent;
final int width = parent.getWidth();
final int height = parent.getHeight();
// Something has gone wrong with our layout; we're 0 width or height!
if (width <= 0 || height <= 0) return;
clipboard = (ClipboardManager) parent.getContext().getSystemService(Context.CLIPBOARD_SERVICE);
keyListener.setClipboardManager(clipboard);
if (!forcedSize) {
// recalculate buffer size
int newColumns, newRows;
newColumns = width / charWidth;
newRows = height / charHeight;
// If nothing has changed in the terminal dimensions and not an intial
// draw then don't blow away scroll regions and such.
if (newColumns == columns && newRows == rows) return;
columns = newColumns;
rows = newRows;
}
// reallocate new bitmap if needed
boolean newBitmap = (bitmap == null);
if (bitmap != null) newBitmap = (bitmap.getWidth() != width || bitmap.getHeight() != height);
if (newBitmap) {
discardBitmap();
bitmap = Bitmap.createBitmap(width, height, Config.ARGB_8888);
canvas.setBitmap(bitmap);
}
// clear out any old buffer information
defaultPaint.setColor(Color.BLACK);
canvas.drawPaint(defaultPaint);
// Stroke the border of the terminal if the size is being forced;
if (forcedSize) {
int borderX = (columns * charWidth) + 1;
int borderY = (rows * charHeight) + 1;
defaultPaint.setColor(Color.GRAY);
defaultPaint.setStrokeWidth(0.0f);
if (width >= borderX) canvas.drawLine(borderX, 0, borderX, borderY + 1, defaultPaint);
if (height >= borderY) canvas.drawLine(0, borderY, borderX + 1, borderY, defaultPaint);
}
try {
// request a terminal pty resize
synchronized (buffer) {
buffer.setScreenSize(columns, rows, true);
}
if (transport != null) transport.setDimensions(columns, rows, width, height);
} catch (Exception e) {
Log.e(TAG, "Problem while trying to resize screen or PTY", e);
}
// redraw local output if we don't have a sesson to receive our resize request
if (transport == null) {
synchronized (localOutput) {
((vt320) buffer).reset();
for (String line : localOutput) ((vt320) buffer).putString(line);
}
}
// force full redraw with new buffer size
fullRedraw = true;
redraw();
parent.notifyUser(String.format("%d x %d", columns, rows));
Log.i(TAG, String.format("parentChanged() now width=%d, height=%d", columns, rows));
}
public void resetScrollPosition() {
// if we're in scrollback, scroll to bottom of window on input
if (buffer.windowBase != buffer.screenBase) buffer.setWindowBase(buffer.screenBase);
}
/**
* Create new terminal bridge with following parameters. We will immediately launch thread to
* start SSH connection and handle any hostkey verification and password authentication.
*/
public TerminalBridge(final TerminalManager manager, final HostBean host) throws IOException {
Typeface type;
this.manager = manager;
this.host = host;
emulation = manager.getEmulation();
scrollback = manager.getScrollback();
// create prompt helper to relay password and hostkey requests up to gui
promptHelper = new PromptHelper(this);
// create our default paint
defaultPaint = new Paint();
defaultPaint.setAntiAlias(true);
type = Typeface.createFromAsset(this.manager.res.getAssets(), "UbuntuMono-R.ttf");
defaultPaint.setTypeface(type);
defaultPaint.setFakeBoldText(true); // more readable?
localOutput = new LinkedList<String>();
fontSizeChangedListeners = new LinkedList<FontSizeChangedListener>();
int hostFontSize = host.getFontSize();
if (hostFontSize <= 0) hostFontSize = DEFAULT_FONT_SIZE;
setFontSize(hostFontSize);
// create terminal buffer and handle outgoing data
// this is probably status reply information
buffer =
new vt320() {
@Override
public void debug(String s) {
Log.d(TAG, s);
}
@Override
public void write(byte[] b) {
try {
if (b != null && transport != null) transport.write(b);
} catch (IOException e) {
Log.e(TAG, "Problem writing outgoing data in vt320() thread", e);
}
}
@Override
public void write(int b) {
try {
if (transport != null) transport.write(b);
} catch (IOException e) {
Log.e(TAG, "Problem writing outgoing data in vt320() thread", e);
}
}
// We don't use telnet sequences.
@Override
public void sendTelnetCommand(byte cmd) {}
// We don't want remote to resize our window.
@Override
public void setWindowSize(int c, int r) {}
@Override
public void beep() {
if (parent.isShown()) manager.playBeep();
else manager.sendActivityNotification(host);
}
};
// Don't keep any scrollback if a session is not being opened.
if (host.getWantSession()) buffer.setBufferSize(scrollback);
else buffer.setBufferSize(0);
resetColors();
buffer.setDisplay(this);
selectionArea = new SelectionArea();
keyListener = new TerminalKeyListener(manager, this, buffer, host.getEncoding());
}