--- /dev/null
+/*
+ * Jexer - Java Text User Interface
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (C) 2019 Kevin Lamonte
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * @author Kevin Lamonte [kevin.lamonte@gmail.com]
+ * @version 1
+ */
+package jexer;
+
+import java.awt.Font;
+import java.awt.FontMetrics;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+import java.io.InputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.text.MessageFormat;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.ResourceBundle;
+
+import jexer.backend.ECMA48Terminal;
+import jexer.backend.GlyphMaker;
+import jexer.backend.MultiScreen;
+import jexer.backend.SwingTerminal;
+import jexer.bits.Cell;
+import jexer.bits.CellAttributes;
+import jexer.event.TKeypressEvent;
+import jexer.event.TMenuEvent;
+import jexer.event.TMouseEvent;
+import jexer.event.TResizeEvent;
+import jexer.menu.TMenu;
+import jexer.tterminal.DisplayLine;
+import jexer.tterminal.DisplayListener;
+import jexer.tterminal.ECMA48;
+import static jexer.TKeypress.*;
+
+/**
+ * TTerminalWindow exposes a ECMA-48 / ANSI X3.64 style terminal in a widget.
+ */
+public class TTerminalWidget extends TScrollableWidget
+ implements DisplayListener {
+
+ /**
+ * Translated strings.
+ */
+ private static final ResourceBundle i18n = ResourceBundle.getBundle(TTerminalWidget.class.getName());
+
+ // ------------------------------------------------------------------------
+ // Variables --------------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * The emulator.
+ */
+ private ECMA48 emulator;
+
+ /**
+ * The Process created by the shell spawning constructor.
+ */
+ private Process shell;
+
+ /**
+ * If true, we are using the ptypipe utility to support dynamic window
+ * resizing. ptypipe is available at
+ * https://gitlab.com/klamonte/ptypipe .
+ */
+ private boolean ptypipe = false;
+
+ /**
+ * Double-height font.
+ */
+ private GlyphMaker doubleFont;
+
+ /**
+ * Last text width value.
+ */
+ private int lastTextWidth = -1;
+
+ /**
+ * Last text height value.
+ */
+ private int lastTextHeight = -1;
+
+ /**
+ * The blink state, used only by ECMA48 backend and when double-width
+ * chars must be drawn.
+ */
+ private boolean blinkState = true;
+
+ /**
+ * Timer flag, used only by ECMA48 backend and when double-width chars
+ * must be drawn.
+ */
+ private boolean haveTimer = false;
+
+ /**
+ * The last seen scrollback lines.
+ */
+ private List<DisplayLine> scrollback;
+
+ /**
+ * The last seen display lines.
+ */
+ private List<DisplayLine> display;
+
+ /**
+ * If true, the display has changed and needs updating.
+ */
+ private volatile boolean dirty = true;
+
+ /**
+ * Time that the display was last updated.
+ */
+ private long lastUpdateTime = 0;
+
+ /**
+ * If true, hide the mouse after typing a keystroke.
+ */
+ private boolean hideMouseWhenTyping = true;
+
+ /**
+ * If true, the mouse should not be displayed because a keystroke was
+ * typed.
+ */
+ private boolean typingHidMouse = false;
+
+ /**
+ * The return value from the emulator.
+ */
+ private int exitValue = -1;
+
+ /**
+ * Title to expose to a window.
+ */
+ private String title = "";
+
+ // ------------------------------------------------------------------------
+ // Constructors -----------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Public constructor spawns a custom command line.
+ *
+ * @param parent parent widget
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param commandLine the command line to execute
+ */
+ public TTerminalWidget(final TWidget parent, final int x,
+ final int y, final String commandLine) {
+
+ this(parent, x, y, commandLine.split("\\s+"));
+ }
+
+ /**
+ * Public constructor spawns a custom command line.
+ *
+ * @param parent parent widget
+ * @param x column relative to parent
+ * @param y row relative to parent
+ * @param command the command line to execute
+ */
+ public TTerminalWidget(final TWidget parent, final int x,
+ final int y, final String [] command) {
+
+ super(parent, x, y, 80, 24);
+
+ String [] fullCommand;
+
+ // Spawn a shell and pass its I/O to the other constructor.
+ if ((System.getProperty("jexer.TTerminal.ptypipe") != null)
+ && (System.getProperty("jexer.TTerminal.ptypipe").
+ equals("true"))
+ ) {
+ ptypipe = true;
+ fullCommand = new String[command.length + 1];
+ fullCommand[0] = "ptypipe";
+ System.arraycopy(command, 0, fullCommand, 1, command.length);
+ } else if (System.getProperty("os.name").startsWith("Windows")) {
+ fullCommand = new String[3];
+ fullCommand[0] = "cmd";
+ fullCommand[1] = "/c";
+ fullCommand[2] = stringArrayToString(command);
+ } else if (System.getProperty("os.name").startsWith("Mac")) {
+ fullCommand = new String[6];
+ fullCommand[0] = "script";
+ fullCommand[1] = "-q";
+ fullCommand[2] = "-F";
+ fullCommand[3] = "/dev/null";
+ fullCommand[4] = "-c";
+ fullCommand[5] = stringArrayToString(command);
+ } else {
+ // Default: behave like Linux
+ fullCommand = new String[5];
+ fullCommand[0] = "script";
+ fullCommand[1] = "-fqe";
+ fullCommand[2] = "/dev/null";
+ fullCommand[3] = "-c";
+ fullCommand[4] = stringArrayToString(command);
+ }
+ spawnShell(fullCommand);
+ }
+
+ /**
+ * Public constructor spawns a shell.
+ *
+ * @param parent parent widget
+ * @param x column relative to parent
+ * @param y row relative to parent
+ */
+ public TTerminalWidget(final TWidget parent, final int x, final int y) {
+
+ super(parent, x, y, 80, 24);
+
+ if (System.getProperty("jexer.TTerminal.shell") != null) {
+ String shell = System.getProperty("jexer.TTerminal.shell");
+ if (shell.trim().startsWith("ptypipe")) {
+ ptypipe = true;
+ }
+ spawnShell(shell.split("\\s+"));
+ return;
+ }
+
+ String cmdShellWindows = "cmd.exe";
+
+ // You cannot run a login shell in a bare Process interactively, due
+ // to libc's behavior of buffering when stdin/stdout aren't a tty.
+ // Use 'script' instead to run a shell in a pty. And because BSD and
+ // GNU differ on the '-f' vs '-F' flags, we need two different
+ // commands. Lovely.
+ String cmdShellGNU = "script -fqe /dev/null";
+ String cmdShellBSD = "script -q -F /dev/null";
+
+ // ptypipe is another solution that permits dynamic window resizing.
+ String cmdShellPtypipe = "ptypipe /bin/bash --login";
+
+ // Spawn a shell and pass its I/O to the other constructor.
+ if ((System.getProperty("jexer.TTerminal.ptypipe") != null)
+ && (System.getProperty("jexer.TTerminal.ptypipe").
+ equals("true"))
+ ) {
+ ptypipe = true;
+ spawnShell(cmdShellPtypipe.split("\\s+"));
+ } else if (System.getProperty("os.name").startsWith("Windows")) {
+ spawnShell(cmdShellWindows.split("\\s+"));
+ } else if (System.getProperty("os.name").startsWith("Mac")) {
+ spawnShell(cmdShellBSD.split("\\s+"));
+ } else if (System.getProperty("os.name").startsWith("Linux")) {
+ spawnShell(cmdShellGNU.split("\\s+"));
+ } else {
+ // When all else fails, assume GNU.
+ spawnShell(cmdShellGNU.split("\\s+"));
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // TScrollableWidget ------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Draw the display buffer.
+ */
+ @Override
+ public void draw() {
+ int width = getDisplayWidth();
+ boolean syncEmulator = false;
+ if ((System.currentTimeMillis() - lastUpdateTime >= 25)
+ && (dirty == true)
+ ) {
+ // Too much time has passed, draw it all.
+ syncEmulator = true;
+ } else if (emulator.isReading() && (dirty == false)) {
+ // Wait until the emulator has brought more data in.
+ syncEmulator = false;
+ } else if (!emulator.isReading() && (dirty == true)) {
+ // The emulator won't receive more data, update the display.
+ syncEmulator = true;
+ }
+
+ if ((syncEmulator == true)
+ || (scrollback == null)
+ || (display == null)
+ ) {
+ // We want to minimize the amount of time we have the emulator
+ // locked. Grab a copy of its display.
+ synchronized (emulator) {
+ // Update the scroll bars
+ reflowData();
+
+ if ((scrollback == null) || emulator.isReading()) {
+ scrollback = copyBuffer(emulator.getScrollbackBuffer());
+ display = copyBuffer(emulator.getDisplayBuffer());
+ }
+ width = emulator.getWidth();
+ }
+ dirty = false;
+ }
+
+ // Draw the box using my superclass
+ super.draw();
+
+ // Put together the visible rows
+ int visibleHeight = getHeight();
+ int visibleBottom = scrollback.size() + display.size()
+ + getVerticalValue();
+ assert (visibleBottom >= 0);
+
+ List<DisplayLine> preceedingBlankLines = new ArrayList<DisplayLine>();
+ int visibleTop = visibleBottom - visibleHeight;
+ if (visibleTop < 0) {
+ for (int i = visibleTop; i < 0; i++) {
+ preceedingBlankLines.add(emulator.getBlankDisplayLine());
+ }
+ visibleTop = 0;
+ }
+ assert (visibleTop >= 0);
+
+ List<DisplayLine> displayLines = new ArrayList<DisplayLine>();
+ displayLines.addAll(scrollback);
+ displayLines.addAll(display);
+
+ List<DisplayLine> visibleLines = new ArrayList<DisplayLine>();
+ visibleLines.addAll(preceedingBlankLines);
+ visibleLines.addAll(displayLines.subList(visibleTop,
+ visibleBottom));
+
+ visibleHeight -= visibleLines.size();
+ assert (visibleHeight >= 0);
+
+ // Now draw the emulator screen
+ int row = 0;
+ for (DisplayLine line: visibleLines) {
+ int widthMax = width;
+ if (line.isDoubleWidth()) {
+ widthMax /= 2;
+ }
+ if (widthMax > getWidth()) {
+ widthMax = getWidth();
+ }
+ for (int i = 0; i < widthMax; i++) {
+ Cell ch = line.charAt(i);
+
+ if (ch.isImage()) {
+ putCharXY(i, row, ch);
+ continue;
+ }
+
+ Cell newCell = new Cell(ch);
+ boolean reverse = line.isReverseColor() ^ ch.isReverse();
+ newCell.setReverse(false);
+ if (reverse) {
+ if (ch.getForeColorRGB() < 0) {
+ newCell.setBackColor(ch.getForeColor());
+ newCell.setBackColorRGB(-1);
+ } else {
+ newCell.setBackColorRGB(ch.getForeColorRGB());
+ }
+ if (ch.getBackColorRGB() < 0) {
+ newCell.setForeColor(ch.getBackColor());
+ newCell.setForeColorRGB(-1);
+ } else {
+ newCell.setForeColorRGB(ch.getBackColorRGB());
+ }
+ }
+ if (line.isDoubleWidth()) {
+ putDoubleWidthCharXY(line, (i * 2), row, newCell);
+ } else {
+ putCharXY(i, row, newCell);
+ }
+ }
+ row++;
+ if (row == getHeight()) {
+ // Don't overwrite the box edge
+ break;
+ }
+ }
+ CellAttributes background = new CellAttributes();
+ // Fill in the blank lines on bottom
+ for (int i = 0; i < visibleHeight; i++) {
+ hLineXY(0, i + row, getWidth(), ' ', background);
+ }
+
+ }
+
+ /**
+ * Handle window close.
+ */
+ @Override
+ public void close() {
+ emulator.close();
+ if (shell != null) {
+ terminateShellChildProcess();
+ shell.destroy();
+ shell = null;
+ }
+ }
+
+ /**
+ * Handle window/screen resize events.
+ *
+ * @param resize resize event
+ */
+ @Override
+ public void onResize(final TResizeEvent resize) {
+
+ // Synchronize against the emulator so we don't stomp on its reader
+ // thread.
+ synchronized (emulator) {
+
+ if (resize.getType() == TResizeEvent.Type.WIDGET) {
+ // Resize the scroll bars
+ reflowData();
+ placeScrollbars();
+
+ // Get out of scrollback
+ setVerticalValue(0);
+
+ if (ptypipe) {
+ emulator.setWidth(getWidth());
+ emulator.setHeight(getHeight());
+
+ emulator.writeRemote("\033[8;" + getHeight() + ";" +
+ getWidth() + "t");
+ }
+ }
+ return;
+
+ } // synchronized (emulator)
+ }
+
+ /**
+ * Resize scrollbars for a new width/height.
+ */
+ @Override
+ public void reflowData() {
+
+ // Synchronize against the emulator so we don't stomp on its reader
+ // thread.
+ synchronized (emulator) {
+
+ // Pull cursor information
+ readEmulatorState();
+
+ // Vertical scrollbar
+ setTopValue(getHeight()
+ - (emulator.getScrollbackBuffer().size()
+ + emulator.getDisplayBuffer().size()));
+ setVerticalBigChange(getHeight());
+
+ } // synchronized (emulator)
+ }
+
+ /**
+ * Handle keystrokes.
+ *
+ * @param keypress keystroke event
+ */
+ @Override
+ public void onKeypress(final TKeypressEvent keypress) {
+ if (hideMouseWhenTyping) {
+ typingHidMouse = true;
+ }
+
+ // Scrollback up/down
+ if (keypress.equals(kbShiftPgUp)
+ || keypress.equals(kbCtrlPgUp)
+ || keypress.equals(kbAltPgUp)
+ ) {
+ bigVerticalDecrement();
+ return;
+ }
+ if (keypress.equals(kbShiftPgDn)
+ || keypress.equals(kbCtrlPgDn)
+ || keypress.equals(kbAltPgDn)
+ ) {
+ bigVerticalIncrement();
+ return;
+ }
+
+ if (emulator.isReading()) {
+ // Get out of scrollback
+ setVerticalValue(0);
+ emulator.addUserEvent(keypress);
+
+ // UGLY HACK TIME! cmd.exe needs CRLF, not just CR, so if
+ // this is kBEnter then also send kbCtrlJ.
+ if (keypress.equals(kbEnter)) {
+ if (System.getProperty("os.name").startsWith("Windows")
+ && (System.getProperty("jexer.TTerminal.cmdHack",
+ "true").equals("true"))
+ ) {
+ emulator.addUserEvent(new TKeypressEvent(kbCtrlJ));
+ }
+ }
+
+ readEmulatorState();
+ return;
+ }
+
+ // Process is closed, honor "normal" TUI keystrokes
+ super.onKeypress(keypress);
+ }
+
+ /**
+ * Handle mouse press events.
+ *
+ * @param mouse mouse button press event
+ */
+ @Override
+ public void onMouseDown(final TMouseEvent mouse) {
+ if (hideMouseWhenTyping) {
+ typingHidMouse = false;
+ }
+
+ // If the emulator is tracking mouse buttons, it needs to see wheel
+ // events.
+ if (emulator.getMouseProtocol() == ECMA48.MouseProtocol.OFF) {
+ if (mouse.isMouseWheelUp()) {
+ verticalDecrement();
+ return;
+ }
+ if (mouse.isMouseWheelDown()) {
+ verticalIncrement();
+ return;
+ }
+ }
+ if (mouseOnEmulator(mouse)) {
+ emulator.addUserEvent(mouse);
+ readEmulatorState();
+ return;
+ }
+
+ // Emulator didn't consume it, pass it on
+ super.onMouseDown(mouse);
+ }
+
+ /**
+ * Handle mouse release events.
+ *
+ * @param mouse mouse button release event
+ */
+ @Override
+ public void onMouseUp(final TMouseEvent mouse) {
+ if (hideMouseWhenTyping) {
+ typingHidMouse = false;
+ }
+
+ if (mouseOnEmulator(mouse)) {
+ emulator.addUserEvent(mouse);
+ readEmulatorState();
+ return;
+ }
+
+ // Emulator didn't consume it, pass it on
+ super.onMouseUp(mouse);
+ }
+
+ /**
+ * Handle mouse motion events.
+ *
+ * @param mouse mouse motion event
+ */
+ @Override
+ public void onMouseMotion(final TMouseEvent mouse) {
+ if (hideMouseWhenTyping) {
+ typingHidMouse = false;
+ }
+
+ if (mouseOnEmulator(mouse)) {
+ emulator.addUserEvent(mouse);
+ readEmulatorState();
+ return;
+ }
+
+ // Emulator didn't consume it, pass it on
+ super.onMouseMotion(mouse);
+ }
+
+ // ------------------------------------------------------------------------
+ // TTerminalWidget --------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Get the desired window title.
+ *
+ * @return the title
+ */
+ public String getTitle() {
+ return title;
+ }
+
+ /**
+ * Returns true if this window does not want the application-wide mouse
+ * cursor drawn over it.
+ *
+ * @return true if this window does not want the application-wide mouse
+ * cursor drawn over it
+ */
+ public boolean hasHiddenMouse() {
+ return (emulator.hasHiddenMousePointer() || typingHidMouse);
+ }
+
+ /**
+ * See if the terminal is still running.
+ *
+ * @return if true, we are still connected to / reading from the remote
+ * side
+ */
+ public boolean isReading() {
+ return emulator.isReading();
+ }
+
+ /**
+ * Convert a string array to a whitespace-separated string.
+ *
+ * @param array the string array
+ * @return a single string
+ */
+ private String stringArrayToString(final String [] array) {
+ StringBuilder sb = new StringBuilder(array[0].length());
+ for (int i = 0; i < array.length; i++) {
+ sb.append(array[i]);
+ if (i < array.length - 1) {
+ sb.append(' ');
+ }
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Spawn the shell.
+ *
+ * @param command the command line to execute
+ */
+ private void spawnShell(final String [] command) {
+
+ /*
+ System.err.printf("spawnShell(): '%s'\n",
+ stringArrayToString(command));
+ */
+
+ // We will have vScroller for its data fields and mouse event
+ // handling, but do not want to draw it.
+ vScroller = new TVScroller(null, getWidth(), 0, getHeight());
+ vScroller.setVisible(false);
+ setBottomValue(0);
+
+ title = i18n.getString("windowTitle");
+
+ // Assume XTERM
+ ECMA48.DeviceType deviceType = ECMA48.DeviceType.XTERM;
+
+ try {
+ ProcessBuilder pb = new ProcessBuilder(command);
+ Map<String, String> env = pb.environment();
+ env.put("TERM", ECMA48.deviceTypeTerm(deviceType));
+ env.put("LANG", ECMA48.deviceTypeLang(deviceType, "en"));
+ env.put("COLUMNS", "80");
+ env.put("LINES", "24");
+ pb.redirectErrorStream(true);
+ shell = pb.start();
+ emulator = new ECMA48(deviceType, shell.getInputStream(),
+ shell.getOutputStream(), this);
+ } catch (IOException e) {
+ messageBox(i18n.getString("errorLaunchingShellTitle"),
+ MessageFormat.format(i18n.getString("errorLaunchingShellText"),
+ e.getMessage()));
+ }
+
+ // Setup the scroll bars
+ onResize(new TResizeEvent(TResizeEvent.Type.WIDGET, getWidth(),
+ getHeight()));
+
+ // Pass the correct text cell width/height to the emulator
+ emulator.setTextWidth(getScreen().getTextWidth());
+ emulator.setTextHeight(getScreen().getTextHeight());
+
+ // Hide mouse when typing option
+ if (System.getProperty("jexer.TTerminal.hideMouseWhenTyping",
+ "true").equals("false")) {
+
+ hideMouseWhenTyping = false;
+ }
+ }
+
+ /**
+ * Terminate the child of the 'script' process used on POSIX. This may
+ * or may not work.
+ */
+ private void terminateShellChildProcess() {
+ int pid = -1;
+ if (shell.getClass().getName().equals("java.lang.UNIXProcess")) {
+ /* get the PID on unix/linux systems */
+ try {
+ Field field = shell.getClass().getDeclaredField("pid");
+ field.setAccessible(true);
+ pid = field.getInt(shell);
+ } catch (Throwable e) {
+ // SQUASH, this didn't work. Just bail out quietly.
+ return;
+ }
+ }
+ if (pid != -1) {
+ // shell.destroy() works successfully at killing this side of
+ // 'script'. But we need to make sure the other side (child
+ // process) is also killed.
+ String [] cmdKillIt = {
+ "pkill", "-P", Integer.toString(pid)
+ };
+ try {
+ Runtime.getRuntime().exec(cmdKillIt);
+ } catch (Throwable e) {
+ // SQUASH, this didn't work. Just bail out quietly.
+ return;
+ }
+ }
+ }
+
+ /**
+ * Hook for subclasses to be notified of the shell termination.
+ */
+ public void onShellExit() {
+ if (getParent() instanceof TTerminalWindow) {
+ ((TTerminalWindow) getParent()).onShellExit();
+ }
+ getApplication().postEvent(new TMenuEvent(TMenu.MID_REPAINT));
+ }
+
+ /**
+ * Copy out variables from the emulator that TTerminal has to expose on
+ * screen.
+ */
+ private void readEmulatorState() {
+ // Synchronize against the emulator so we don't stomp on its reader
+ // thread.
+ synchronized (emulator) {
+
+ setCursorX(emulator.getCursorX());
+ setCursorY(emulator.getCursorY()
+ + (getHeight() - emulator.getHeight())
+ - getVerticalValue());
+ setCursorVisible(emulator.isCursorVisible());
+ if (getCursorX() > getWidth()) {
+ setCursorVisible(false);
+ }
+ if ((getCursorY() >= getHeight()) || (getCursorY() < 0)) {
+ setCursorVisible(false);
+ }
+ if (emulator.getScreenTitle().length() > 0) {
+ // Only update the title if the shell is still alive
+ if (shell != null) {
+ title = emulator.getScreenTitle();
+ }
+ }
+
+ // Check to see if the shell has died.
+ if (!emulator.isReading() && (shell != null)) {
+ try {
+ int rc = shell.exitValue();
+ // The emulator exited on its own, all is fine
+ title = MessageFormat.format(i18n.
+ getString("windowTitleCompleted"), title, rc);
+ exitValue = rc;
+ shell = null;
+ emulator.close();
+ onShellExit();
+ } catch (IllegalThreadStateException e) {
+ // The emulator thread has exited, but the shell Process
+ // hasn't figured that out yet. Do nothing, we will see
+ // this in a future tick.
+ }
+ } else if (emulator.isReading() && (shell != null)) {
+ // The shell might be dead, let's check
+ try {
+ int rc = shell.exitValue();
+ // If we got here, the shell died.
+ title = MessageFormat.format(i18n.
+ getString("windowTitleCompleted"), title, rc);
+ exitValue = rc;
+ shell = null;
+ emulator.close();
+ onShellExit();
+ } catch (IllegalThreadStateException e) {
+ // The shell is still running, do nothing.
+ }
+ }
+
+ } // synchronized (emulator)
+ }
+
+ /**
+ * Check if a mouse press/release/motion event coordinate is over the
+ * emulator.
+ *
+ * @param mouse a mouse-based event
+ * @return whether or not the mouse is on the emulator
+ */
+ private boolean mouseOnEmulator(final TMouseEvent mouse) {
+
+ if (!emulator.isReading()) {
+ return false;
+ }
+
+ if ((mouse.getX() >= 0)
+ && (mouse.getX() < getWidth() - 1)
+ && (mouse.getY() >= 0)
+ && (mouse.getY() < getHeight())
+ ) {
+ return true;
+ }
+ return false;
+ }
+
+ /**
+ * Copy a display buffer.
+ *
+ * @param buffer the buffer to copy
+ * @return a deep copy of the buffer's data
+ */
+ private List<DisplayLine> copyBuffer(final List<DisplayLine> buffer) {
+ ArrayList<DisplayLine> result = new ArrayList<DisplayLine>(buffer.size());
+ for (DisplayLine line: buffer) {
+ result.add(new DisplayLine(line));
+ }
+ return result;
+ }
+
+ /**
+ * Draw glyphs for a double-width or double-height VT100 cell to two
+ * screen cells.
+ *
+ * @param line the line this VT100 cell is in
+ * @param x the X position to draw the left half to
+ * @param y the Y position to draw to
+ * @param cell the cell to draw
+ */
+ private void putDoubleWidthCharXY(final DisplayLine line, final int x,
+ final int y, final Cell cell) {
+
+ int textWidth = getScreen().getTextWidth();
+ int textHeight = getScreen().getTextHeight();
+ boolean cursorBlinkVisible = true;
+
+ if (getScreen() instanceof SwingTerminal) {
+ SwingTerminal terminal = (SwingTerminal) getScreen();
+ cursorBlinkVisible = terminal.getCursorBlinkVisible();
+ } else if (getScreen() instanceof ECMA48Terminal) {
+ ECMA48Terminal terminal = (ECMA48Terminal) getScreen();
+
+ if (!terminal.hasSixel()) {
+ // The backend does not have sixel support, draw this as text
+ // and bail out.
+ putCharXY(x, y, cell);
+ putCharXY(x + 1, y, ' ', cell);
+ return;
+ }
+ cursorBlinkVisible = blinkState;
+ } else {
+ // We don't know how to dray glyphs to this screen, draw them as
+ // text and bail out.
+ putCharXY(x, y, cell);
+ putCharXY(x + 1, y, ' ', cell);
+ return;
+ }
+
+ if ((textWidth != lastTextWidth) || (textHeight != lastTextHeight)) {
+ // Screen size has changed, reset the font.
+ setupFont(textHeight);
+ lastTextWidth = textWidth;
+ lastTextHeight = textHeight;
+ }
+ assert (doubleFont != null);
+
+ BufferedImage image;
+ if (line.getDoubleHeight() == 1) {
+ // Double-height top half: don't draw the underline.
+ Cell newCell = new Cell(cell);
+ newCell.setUnderline(false);
+ image = doubleFont.getImage(newCell, textWidth * 2, textHeight * 2,
+ cursorBlinkVisible);
+ } else {
+ image = doubleFont.getImage(cell, textWidth * 2, textHeight * 2,
+ cursorBlinkVisible);
+ }
+
+ // Now that we have the double-wide glyph drawn, copy the right
+ // pieces of it to the cells.
+ Cell left = new Cell(cell);
+ Cell right = new Cell(cell);
+ right.setChar(' ');
+ BufferedImage leftImage = null;
+ BufferedImage rightImage = null;
+ /*
+ System.err.println("image " + image + " textWidth " + textWidth +
+ " textHeight " + textHeight);
+ */
+
+ switch (line.getDoubleHeight()) {
+ case 1:
+ // Top half double height
+ leftImage = image.getSubimage(0, 0, textWidth, textHeight);
+ rightImage = image.getSubimage(textWidth, 0, textWidth, textHeight);
+ break;
+ case 2:
+ // Bottom half double height
+ leftImage = image.getSubimage(0, textHeight, textWidth, textHeight);
+ rightImage = image.getSubimage(textWidth, textHeight,
+ textWidth, textHeight);
+ break;
+ default:
+ // Either single height double-width, or error fallback
+ BufferedImage wideImage = new BufferedImage(textWidth * 2,
+ textHeight, BufferedImage.TYPE_INT_ARGB);
+ Graphics2D grWide = wideImage.createGraphics();
+ grWide.drawImage(image, 0, 0, wideImage.getWidth(),
+ wideImage.getHeight(), null);
+ grWide.dispose();
+ leftImage = wideImage.getSubimage(0, 0, textWidth, textHeight);
+ rightImage = wideImage.getSubimage(textWidth, 0, textWidth,
+ textHeight);
+ break;
+ }
+ left.setImage(leftImage);
+ right.setImage(rightImage);
+ // Since we have image data, ditch the character here. Otherwise, a
+ // drawBoxShadow() over the terminal window will show the characters
+ // which looks wrong.
+ left.setChar(' ');
+ right.setChar(' ');
+ putCharXY(x, y, left);
+ putCharXY(x + 1, y, right);
+ }
+
+ /**
+ * Set up the double-width font.
+ *
+ * @param fontSize the size of font to request for the single-width font.
+ * The double-width font will be 2x this value.
+ */
+ private void setupFont(final int fontSize) {
+ doubleFont = GlyphMaker.getInstance(fontSize * 2);
+
+ // Special case: the ECMA48 backend needs to have a timer to drive
+ // its blink state.
+ if (getScreen() instanceof jexer.backend.ECMA48Terminal) {
+ if (!haveTimer) {
+ // Blink every 500 millis.
+ long millis = 500;
+ getApplication().addTimer(millis, true,
+ new TAction() {
+ public void DO() {
+ blinkState = !blinkState;
+ getApplication().doRepaint();
+ }
+ }
+ );
+ haveTimer = true;
+ }
+ }
+ }
+
+ // ------------------------------------------------------------------------
+ // DisplayListener --------------------------------------------------------
+ // ------------------------------------------------------------------------
+
+ /**
+ * Called by emulator when fresh data has come in.
+ */
+ public void displayChanged() {
+ dirty = true;
+ getApplication().postEvent(new TMenuEvent(TMenu.MID_REPAINT));
+ }
+
+ /**
+ * Function to call to obtain the display width.
+ *
+ * @return the number of columns in the display
+ */
+ public int getDisplayWidth() {
+ if (ptypipe) {
+ return getWidth();
+ }
+ return 80;
+ }
+
+ /**
+ * Function to call to obtain the display height.
+ *
+ * @return the number of rows in the display
+ */
+ public int getDisplayHeight() {
+ if (ptypipe) {
+ return getHeight();
+ }
+ return 24;
+ }
+
+}
git://git.nikiroo.be / fanfix.git / blobdiff