src/jexer/TTerminalWindow.java

   1 /*
   2  * Jexer - Java Text User Interface
   3  *
   4  * The MIT License (MIT)
   5  *
   6  * Copyright (C) 2019 Kevin Lamonte
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and associated documentation files (the "Software"),
  10  * to deal in the Software without restriction, including without limitation
  11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  12  * and/or sell copies of the Software, and to permit persons to whom the
  13  * Software is furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  24  * DEALINGS IN THE SOFTWARE.
  25  *
  26  * @author Kevin Lamonte [kevin.lamonte@gmail.com]
  27  * @version 1
  28  */
  29 package jexer;
  30
  31 import java.awt.Font;
  32 import java.awt.FontMetrics;
  33 import java.awt.Graphics2D;
  34 import java.awt.image.BufferedImage;
  35
  36 import java.io.InputStream;
  37 import java.io.IOException;
  38 import java.lang.reflect.Field;
  39 import java.text.MessageFormat;
  40 import java.util.ArrayList;
  41 import java.util.HashMap;
  42 import java.util.List;
  43 import java.util.Map;
  44 import java.util.ResourceBundle;
  45
  46 import jexer.backend.ECMA48Terminal;
  47 import jexer.backend.GlyphMaker;
  48 import jexer.backend.MultiScreen;
  49 import jexer.backend.SwingTerminal;
  50 import jexer.bits.Cell;
  51 import jexer.bits.CellAttributes;
  52 import jexer.event.TKeypressEvent;
  53 import jexer.event.TMenuEvent;
  54 import jexer.event.TMouseEvent;
  55 import jexer.event.TResizeEvent;
  56 import jexer.menu.TMenu;
  57 import jexer.tterminal.DisplayLine;
  58 import jexer.tterminal.DisplayListener;
  59 import jexer.tterminal.ECMA48;
  60 import static jexer.TKeypress.*;
  61
  62 /**
  63  * TTerminalWindow exposes a ECMA-48 / ANSI X3.64 style terminal in a window.
  64  */
  65 public class TTerminalWindow extends TScrollableWindow {
  66
  67     /**
  68      * Translated strings.
  69      */
  70     private static final ResourceBundle i18n = ResourceBundle.getBundle(TTerminalWindow.class.getName());
  71
  72     // ------------------------------------------------------------------------
  73     // Variables --------------------------------------------------------------
  74     // ------------------------------------------------------------------------
  75
  76     /**
  77      * The terminal.
  78      */
  79     private TTerminalWidget terminal;
  80
  81     /**
  82      * If true, close the window when the shell exits.
  83      */
  84     private boolean closeOnExit = false;
  85
  86     // ------------------------------------------------------------------------
  87     // Constructors -----------------------------------------------------------
  88     // ------------------------------------------------------------------------
  89
  90     /**
  91      * Public constructor spawns a custom command line.
  92      *
  93      * @param application TApplication that manages this window
  94      * @param x column relative to parent
  95      * @param y row relative to parent
  96      * @param commandLine the command line to execute
  97      */
  98     public TTerminalWindow(final TApplication application, final int x,
  99         final int y, final String commandLine) {
 100
 101         this(application, x, y, RESIZABLE, commandLine.split("\\s+"),
 102             System.getProperty("jexer.TTerminal.closeOnExit",
 103                 "false").equals("true"));
 104     }
 105
 106     /**
 107      * Public constructor spawns a custom command line.
 108      *
 109      * @param application TApplication that manages this window
 110      * @param x column relative to parent
 111      * @param y row relative to parent
 112      * @param commandLine the command line to execute
 113      * @param closeOnExit if true, close the window when the command exits
 114      */
 115     public TTerminalWindow(final TApplication application, final int x,
 116         final int y, final String commandLine, final boolean closeOnExit) {
 117
 118         this(application, x, y, RESIZABLE, commandLine.split("\\s+"),
 119             closeOnExit);
 120     }
 121
 122     /**
 123      * Public constructor spawns a custom command line.
 124      *
 125      * @param application TApplication that manages this window
 126      * @param x column relative to parent
 127      * @param y row relative to parent
 128      * @param flags mask of CENTERED, MODAL, or RESIZABLE
 129      * @param command the command line to execute
 130      */
 131     public TTerminalWindow(final TApplication application, final int x,
 132         final int y, final int flags, final String [] command) {
 133
 134         this(application, x, y, flags, command,
 135             System.getProperty("jexer.TTerminal.closeOnExit",
 136                 "false").equals("true"));
 137     }
 138
 139     /**
 140      * Public constructor spawns a custom command line.
 141      *
 142      * @param application TApplication that manages this window
 143      * @param x column relative to parent
 144      * @param y row relative to parent
 145      * @param flags mask of CENTERED, MODAL, or RESIZABLE
 146      * @param command the command line to execute
 147      * @param closeOnExit if true, close the window when the command exits
 148      */
 149     public TTerminalWindow(final TApplication application, final int x,
 150         final int y, final int flags, final String [] command,
 151         final boolean closeOnExit) {
 152
 153         super(application, i18n.getString("windowTitle"), x, y,
 154             80 + 2, 24 + 2, flags);
 155
 156         this.closeOnExit = closeOnExit;
 157         vScroller = new TVScroller(this, getWidth() - 2, 0, getHeight() - 2);
 158
 159         // Claim the keystrokes the emulator will need.
 160         addShortcutKeys();
 161
 162         // Add shortcut text
 163         newStatusBar(i18n.getString("statusBarRunning"));
 164
 165         // Spin it up
 166         terminal = new TTerminalWidget(this, 0, 0, new TAction() {
 167             public void DO() {
 168                 onShellExit();
 169             }
 170         });
 171     }
 172
 173     /**
 174      * Public constructor spawns a shell.
 175      *
 176      * @param application TApplication that manages this window
 177      * @param x column relative to parent
 178      * @param y row relative to parent
 179      * @param flags mask of CENTERED, MODAL, or RESIZABLE
 180      */
 181     public TTerminalWindow(final TApplication application, final int x,
 182         final int y, final int flags) {
 183
 184         this(application, x, y, flags,
 185             System.getProperty("jexer.TTerminal.closeOnExit",
 186                 "false").equals("true"));
 187
 188     }
 189
 190     /**
 191      * Public constructor spawns a shell.
 192      *
 193      * @param application TApplication that manages this window
 194      * @param x column relative to parent
 195      * @param y row relative to parent
 196      * @param flags mask of CENTERED, MODAL, or RESIZABLE
 197      * @param closeOnExit if true, close the window when the shell exits
 198      */
 199     public TTerminalWindow(final TApplication application, final int x,
 200         final int y, final int flags, final boolean closeOnExit) {
 201
 202         super(application, i18n.getString("windowTitle"), x, y,
 203             80 + 2, 24 + 2, flags);
 204
 205         this.closeOnExit = closeOnExit;
 206         vScroller = new TVScroller(this, getWidth() - 2, 0, getHeight() - 2);
 207
 208         // Claim the keystrokes the emulator will need.
 209         addShortcutKeys();
 210
 211         // Add shortcut text
 212         newStatusBar(i18n.getString("statusBarRunning"));
 213
 214         // Spin it up
 215         terminal = new TTerminalWidget(this, 0, 0, new TAction() {
 216             public void DO() {
 217                 onShellExit();
 218             }
 219         });
 220     }
 221
 222     // ------------------------------------------------------------------------
 223     // TScrollableWindow ------------------------------------------------------
 224     // ------------------------------------------------------------------------
 225
 226     /**
 227      * Draw the display buffer.
 228      */
 229     @Override
 230     public void draw() {
 231         setTitle(terminal.getTitle());
 232         reflowData();
 233         super.draw();
 234     }
 235
 236     /**
 237      * Handle window/screen resize events.
 238      *
 239      * @param resize resize event
 240      */
 241     @Override
 242     public void onResize(final TResizeEvent resize) {
 243         if (resize.getType() == TResizeEvent.Type.WIDGET) {
 244             terminal.onResize(new TResizeEvent(TResizeEvent.Type.WIDGET,
 245                     getWidth() - 2, getHeight() - 2));
 246
 247             // Resize the scroll bars
 248             reflowData();
 249             placeScrollbars();
 250         }
 251         return;
 252     }
 253
 254     /**
 255      * Resize scrollbars for a new width/height.
 256      */
 257     @Override
 258     public void reflowData() {
 259         // Vertical scrollbar
 260         terminal.reflowData();
 261         setTopValue(terminal.getTopValue());
 262         setBottomValue(terminal.getBottomValue());
 263         setVerticalBigChange(terminal.getVerticalBigChange());
 264         setVerticalValue(terminal.getVerticalValue());
 265     }
 266
 267     /**
 268      * Handle keystrokes.
 269      *
 270      * @param keypress keystroke event
 271      */
 272     @Override
 273     public void onKeypress(final TKeypressEvent keypress) {
 274         if (terminal.isReading()) {
 275             terminal.onKeypress(keypress);
 276         } else {
 277             super.onKeypress(keypress);
 278         }
 279     }
 280
 281     /**
 282      * Handle mouse press events.
 283      *
 284      * @param mouse mouse button press event
 285      */
 286     @Override
 287     public void onMouseDown(final TMouseEvent mouse) {
 288         if (inWindowMove || inWindowResize) {
 289             // TWindow needs to deal with this.
 290             super.onMouseDown(mouse);
 291             return;
 292         }
 293
 294         super.onMouseDown(mouse);
 295     }
 296
 297     /**
 298      * Handle mouse release events.
 299      *
 300      * @param mouse mouse button release event
 301      */
 302     @Override
 303     public void onMouseUp(final TMouseEvent mouse) {
 304         if (inWindowMove || inWindowResize) {
 305             // TWindow needs to deal with this.
 306             super.onMouseUp(mouse);
 307             return;
 308         }
 309
 310         super.onMouseUp(mouse);
 311     }
 312
 313     /**
 314      * Handle mouse motion events.
 315      *
 316      * @param mouse mouse motion event
 317      */
 318     @Override
 319     public void onMouseMotion(final TMouseEvent mouse) {
 320         if (inWindowMove || inWindowResize) {
 321             // TWindow needs to deal with this.
 322             super.onMouseMotion(mouse);
 323             return;
 324         }
 325
 326         super.onMouseMotion(mouse);
 327     }
 328
 329     // ------------------------------------------------------------------------
 330     // TTerminalWindow --------------------------------------------------------
 331     // ------------------------------------------------------------------------
 332
 333     /**
 334      * Returns true if this window does not want the application-wide mouse
 335      * cursor drawn over it.
 336      *
 337      * @return true if this window does not want the application-wide mouse
 338      * cursor drawn over it
 339      */
 340     @Override
 341     public boolean hasHiddenMouse() {
 342         return terminal.hasHiddenMouse();
 343     }
 344
 345     /**
 346      * Claim the keystrokes the emulator will need.
 347      */
 348     private void addShortcutKeys() {
 349         addShortcutKeypress(kbCtrlA);
 350         addShortcutKeypress(kbCtrlB);
 351         addShortcutKeypress(kbCtrlC);
 352         addShortcutKeypress(kbCtrlD);
 353         addShortcutKeypress(kbCtrlE);
 354         addShortcutKeypress(kbCtrlF);
 355         addShortcutKeypress(kbCtrlG);
 356         addShortcutKeypress(kbCtrlH);
 357         addShortcutKeypress(kbCtrlU);
 358         addShortcutKeypress(kbCtrlJ);
 359         addShortcutKeypress(kbCtrlK);
 360         addShortcutKeypress(kbCtrlL);
 361         addShortcutKeypress(kbCtrlM);
 362         addShortcutKeypress(kbCtrlN);
 363         addShortcutKeypress(kbCtrlO);
 364         addShortcutKeypress(kbCtrlP);
 365         addShortcutKeypress(kbCtrlQ);
 366         addShortcutKeypress(kbCtrlR);
 367         addShortcutKeypress(kbCtrlS);
 368         addShortcutKeypress(kbCtrlT);
 369         addShortcutKeypress(kbCtrlU);
 370         addShortcutKeypress(kbCtrlV);
 371         addShortcutKeypress(kbCtrlW);
 372         addShortcutKeypress(kbCtrlX);
 373         addShortcutKeypress(kbCtrlY);
 374         addShortcutKeypress(kbCtrlZ);
 375         addShortcutKeypress(kbF1);
 376         addShortcutKeypress(kbF2);
 377         addShortcutKeypress(kbF3);
 378         addShortcutKeypress(kbF4);
 379         addShortcutKeypress(kbF5);
 380         addShortcutKeypress(kbF6);
 381         addShortcutKeypress(kbF7);
 382         addShortcutKeypress(kbF8);
 383         addShortcutKeypress(kbF9);
 384         addShortcutKeypress(kbF10);
 385         addShortcutKeypress(kbF11);
 386         addShortcutKeypress(kbF12);
 387         addShortcutKeypress(kbAltA);
 388         addShortcutKeypress(kbAltB);
 389         addShortcutKeypress(kbAltC);
 390         addShortcutKeypress(kbAltD);
 391         addShortcutKeypress(kbAltE);
 392         addShortcutKeypress(kbAltF);
 393         addShortcutKeypress(kbAltG);
 394         addShortcutKeypress(kbAltH);
 395         addShortcutKeypress(kbAltU);
 396         addShortcutKeypress(kbAltJ);
 397         addShortcutKeypress(kbAltK);
 398         addShortcutKeypress(kbAltL);
 399         addShortcutKeypress(kbAltM);
 400         addShortcutKeypress(kbAltN);
 401         addShortcutKeypress(kbAltO);
 402         addShortcutKeypress(kbAltP);
 403         addShortcutKeypress(kbAltQ);
 404         addShortcutKeypress(kbAltR);
 405         addShortcutKeypress(kbAltS);
 406         addShortcutKeypress(kbAltT);
 407         addShortcutKeypress(kbAltU);
 408         addShortcutKeypress(kbAltV);
 409         addShortcutKeypress(kbAltW);
 410         addShortcutKeypress(kbAltX);
 411         addShortcutKeypress(kbAltY);
 412         addShortcutKeypress(kbAltZ);
 413     }
 414
 415     /**
 416      * Hook for subclasses to be notified of the shell termination.
 417      */
 418     public void onShellExit() {
 419         if (closeOnExit) {
 420             close();
 421         }
 422         clearShortcutKeypresses();
 423         getApplication().postEvent(new TMenuEvent(TMenu.MID_REPAINT));
 424     }
 425
 426 }