src/frontends/xforms/XWorkArea.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "XWorkArea.h"
  18 #include "debug.h"
  19 #include "frontends/LyXView.h"
  20 #include "lyxrc.h" // lyxrc.show_banner
  21 #include "version.h" // lyx_version
  22
  23 #if FL_VERSION < 1 && (FL_REVISION < 89 || (FL_REVISION == 89 && FL_FIXLEVEL < 5))
  24 #include "frontends/xforms/lyxlookup.h"
  25 #endif
  26
  27 #include "support/filetools.h" // LibFileSearch
  28 #include "support/lstrings.h"
  29 #include "support/LAssert.h"
  30
  31 #include <cmath>
  32 #include <cctype>
  33
  34 // xforms doesn't define this (but it should be in <forms.h>).
  35 extern "C"
  36 FL_APPEVENT_CB fl_set_preemptive_callback(Window, FL_APPEVENT_CB, void *);
  37
  38 using std::endl;
  39 using std::abs;
  40 using std::hex;
  41
  42 namespace {
  43
  44 inline
  45 void waitForX()
  46 {
  47         XSync(fl_get_display(), 0);
  48 }
  49
  50 // FIXME !
  51 mouse_button::state x_button_state(unsigned int button)
  52 {
  53         mouse_button::state b = mouse_button::none;
  54         switch (button) {
  55                 case Button1:
  56                         b = mouse_button::button1;
  57                         break;
  58                 case Button2:
  59                         b = mouse_button::button2;
  60                         break;
  61                 case Button3:
  62                         b = mouse_button::button3;
  63                         break;
  64                 case Button4:
  65                         b = mouse_button::button4;
  66                         break;
  67                 case Button5:
  68                         b = mouse_button::button5;
  69                         break;
  70                 default: // FIXME
  71                         break;
  72         }
  73         return b;
  74 }
  75
  76
  77 // FIXME
  78 mouse_button::state x_motion_state(unsigned int state)
  79 {
  80         mouse_button::state b = mouse_button::none;
  81         if (state & Button1MotionMask)
  82                 b |= mouse_button::button1;
  83         if (state & Button2MotionMask)
  84                 b |= mouse_button::button2;
  85         if (state & Button3MotionMask)
  86                 b |= mouse_button::button3;
  87         if (state & Button4MotionMask)
  88                 b |= mouse_button::button4;
  89         if (state & Button5MotionMask)
  90                 b |= mouse_button::button5;
  91         return b;
  92 }
  93
  94
  95 key_modifier::state x_key_state(unsigned int state)
  96 {
  97         key_modifier::state k = key_modifier::none;
  98         if (state & ControlMask)
  99                 k |= key_modifier::ctrl;
 100         if (state & ShiftMask)
 101                 k |= key_modifier::shift;
 102         if (state & Mod1Mask)
 103                 k |= key_modifier::alt;
 104         return k;
 105 }
 106
 107
 108 } // anon namespace
 109
 110
 111 extern "C" {
 112         // Just a bunch of C wrappers around static members of WorkArea
 113         static
 114         void C_WorkArea_scroll_cb(FL_OBJECT * ob, long buf)
 115         {
 116                 WorkArea::scroll_cb(ob, buf);
 117         }
 118
 119
 120         static
 121         int C_WorkArea_work_area_handler(FL_OBJECT * ob, int event,
 122                                          FL_Coord, FL_Coord,
 123                                          int key, void * xev)
 124         {
 125                 return WorkArea::work_area_handler(ob, event,
 126                                                    0, 0, key, xev);
 127         }
 128
 129         static
 130         int C_WorkAreaEventCB(FL_FORM * form, void * xev) {
 131                 WorkArea * wa = static_cast<WorkArea*>(form->u_vdata);
 132                 return wa->event_cb(static_cast<XEvent*>(xev));
 133         }
 134 }
 135
 136
 137 WorkArea::WorkArea(int x, int y, int w, int h)
 138         : splash_(0), splash_text_(0), workareapixmap(0), painter_(*this)
 139 {
 140         fl_freeze_all_forms();
 141
 142         //
 143         FL_OBJECT * obj;
 144
 145         // a box
 146         if (lyxerr.debugging(Debug::WORKAREA))
 147                 lyxerr << "\tbackground box: +"
 148                        << x << '+' << y << ' '
 149                        << w - 15 << 'x' << h << endl;
 150         backgroundbox = obj = fl_add_box(FL_BORDER_BOX,
 151                                          x, y,
 152                                          w - 15,
 153                                          h,"");
 154         fl_set_object_resize(obj, FL_RESIZE_ALL);
 155         fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
 156
 157         // Add a splash screen to the centre of the work area
 158         string const splash_file = (lyxrc.show_banner) ?
 159                 LibFileSearch("images", "banner", "xpm") : string();
 160
 161         if (!splash_file.empty()) {
 162                 int const splash_w = 425;
 163                 int const splash_h = 290;
 164                 int const splash_x = x + (w - 15 - splash_w) / 2;
 165                 int const splash_y = y + (h - splash_h) / 2;
 166                 splash_ = obj =
 167                         fl_add_pixmapbutton(FL_NORMAL_BUTTON,
 168                                             splash_x, splash_y,
 169                                             splash_w, splash_h, "");
 170                 fl_set_pixmapbutton_file(obj, splash_file.c_str());
 171                 fl_set_pixmapbutton_focus_outline(obj, 3);
 172                 fl_set_object_boxtype(obj, FL_NO_BOX);
 173
 174                 int const text_x = splash_x + 260;
 175                 int const text_y = splash_y + 255;
 176                 splash_text_ = obj =
 177                         fl_add_text(FL_NORMAL_TEXT, text_x, text_y, 160, 16,
 178                                     lyx_version);
 179                 fl_set_object_lsize(obj, FL_NORMAL_SIZE);
 180                 fl_mapcolor(FL_FREE_COL2, 0x2b, 0x47, 0x82);
 181                 fl_mapcolor(FL_FREE_COL3, 0xe1, 0xd2, 0x9b);
 182                 fl_set_object_color(obj, FL_FREE_COL2, FL_FREE_COL2);
 183                 fl_set_object_lcol(obj, FL_FREE_COL3);
 184                 fl_set_object_lalign(obj, FL_ALIGN_LEFT|FL_ALIGN_INSIDE);
 185                 fl_set_object_lstyle(obj, FL_BOLD_STYLE);
 186         }
 187
 188         scrollbar = obj = fl_add_scrollbar(FL_VERT_SCROLLBAR,
 189                                            x + w - 15,
 190                                            y, 17, h, "");
 191         fl_set_object_boxtype(obj, FL_UP_BOX);
 192         fl_set_object_resize(obj, FL_RESIZE_ALL);
 193         fl_set_object_gravity(obj, NorthEastGravity, SouthEastGravity);
 194         obj->u_vdata = this;
 195         fl_set_object_callback(obj, C_WorkArea_scroll_cb, 0);
 196         setScrollbarBounds(0.0, 0.0);
 197
 198         ///
 199         /// The free object
 200
 201         int const bw = int(abs(fl_get_border_width()));
 202
 203         // Create the workarea pixmap
 204         createPixmap(w - 15 - 2 * bw, h - 2 * bw);
 205
 206         // We add this object as late as possible to avoit problems
 207         // with drawing.
 208         if (lyxerr.debugging(Debug::WORKAREA))
 209                 lyxerr << "\tfree object: +"
 210                        << x + bw << '+' << y + bw << ' '
 211                        << w - 15 - 2 * bw << 'x'
 212                        << h - 2 * bw << endl;
 213
 214         work_area = obj = fl_add_free(FL_ALL_FREE,
 215                                       x + bw, y + bw,
 216                                       w - 15 - 2 * bw, // scrollbarwidth
 217                                       h - 2 * bw, "",
 218                                       C_WorkArea_work_area_handler);
 219         obj->wantkey = FL_KEY_ALL;
 220         obj->u_vdata = this; /* This is how we pass the WorkArea
 221                                 to the work_area_handler. */
 222         fl_set_object_boxtype(obj,FL_DOWN_BOX);
 223         fl_set_object_resize(obj, FL_RESIZE_ALL);
 224         fl_set_object_gravity(obj, NorthWestGravity, SouthEastGravity);
 225
 226         /// X selection hook - xforms gets it wrong
 227         fl_current_form->u_vdata = this;
 228         fl_register_raw_callback(fl_current_form, FL_ALL_EVENT, C_WorkAreaEventCB);
 229
 230         fl_unfreeze_all_forms();
 231 }
 232
 233
 234 WorkArea::~WorkArea()
 235 {
 236         if (workareapixmap)
 237                 XFreePixmap(fl_get_display(), workareapixmap);
 238 }
 239
 240
 241 void WorkArea::resize(int xpos, int ypos, int width, int height)
 242 {
 243         fl_freeze_all_forms();
 244
 245         int const bw = int(abs(fl_get_border_width()));
 246
 247         // a box
 248         fl_set_object_geometry(backgroundbox, xpos, ypos, width - 15, height);
 249
 250         //
 251         // THE SCROLLBAR
 252         //
 253         fl_set_object_geometry(scrollbar, xpos + width - 15,
 254                                ypos, 17, height);
 255
 256         // Create the workarea pixmap
 257         createPixmap(width - 15 - 2 * bw, height - 2 * bw);
 258
 259         // the free object
 260         fl_set_object_geometry(work_area, xpos + bw, ypos + bw,
 261                                width - 15 - 2 * bw,
 262                                height - 2 * bw);
 263
 264         fl_unfreeze_all_forms();
 265 }
 266
 267
 268 namespace {
 269 void destroy_object(FL_OBJECT * obj)
 270 {
 271         if (!obj)
 272                 return;
 273
 274         if (obj->visible) {
 275                 fl_hide_object(obj);
 276         }
 277         fl_delete_object(obj);
 278         fl_free_object(obj);
 279 }
 280 } // namespace anon
 281
 282
 283 void WorkArea::createPixmap(int width, int height)
 284 {
 285         // Three calls to createPixmap are needed to draw the initial view
 286         // of LyX. Any more and the splash is destroyed.
 287         static int counter = 0;
 288         if (++counter == 4) {
 289                 destroy_object(splash_);
 290                 splash_ = 0;
 291                 destroy_object(splash_text_);
 292                 splash_text_ = 0;
 293         }
 294
 295         static int cur_width = -1;
 296         static int cur_height = -1;
 297
 298         if (cur_width == width && cur_height == height && workareapixmap)
 299                 return;
 300
 301         cur_width = width;
 302         cur_height = height;
 303
 304         if (workareapixmap)
 305                 XFreePixmap(fl_get_display(), workareapixmap);
 306
 307         if (lyxerr.debugging(Debug::WORKAREA))
 308                 lyxerr << "Creating pixmap ("
 309                        << width << 'x' << height << ")" << endl;
 310
 311         workareapixmap = XCreatePixmap(fl_get_display(),
 312                                        RootWindow(fl_get_display(), 0),
 313                                        width,
 314                                        height,
 315                                        fl_get_visual_depth());
 316         if (lyxerr.debugging(Debug::WORKAREA))
 317                 lyxerr << "\tpixmap=" << workareapixmap << endl;
 318 }
 319
 320
 321 void WorkArea::greyOut() const
 322 {
 323         if (!splash_) {
 324                 fl_winset(FL_ObjWin(work_area));
 325                 fl_rectangle(1, work_area->x, work_area->y,
 326                              work_area->w, work_area->h, FL_GRAY63);
 327         }
 328 }
 329
 330
 331 void WorkArea::setFocus() const
 332 {
 333         fl_set_focus_object(work_area->form, work_area);
 334 }
 335
 336
 337 void WorkArea::setScrollbar(double pos, double length_fraction) const
 338 {
 339         fl_set_scrollbar_value(scrollbar, pos);
 340         fl_set_scrollbar_size(scrollbar, scrollbar->h * length_fraction);
 341 }
 342
 343
 344 void WorkArea::setScrollbarBounds(double l1, double l2) const
 345 {
 346         fl_set_scrollbar_bounds(scrollbar, l1, l2);
 347 }
 348
 349
 350 void WorkArea::setScrollbarIncrements(double inc) const
 351 {
 352         fl_set_scrollbar_increment(scrollbar, work_area->h - inc, inc);
 353 }
 354
 355
 356 // Callback for scrollbar slider
 357 void WorkArea::scroll_cb(FL_OBJECT * ob, long)
 358 {
 359         WorkArea * area = static_cast<WorkArea*>(ob->u_vdata);
 360         // If we really want the accellerating scroll we can do that
 361         // from here. IMHO that is a waste of effort since we already
 362         // have other ways to move fast around in the document. (Lgb)
 363         area->scrollCB(fl_get_scrollbar_value(ob));
 364         waitForX();
 365 }
 366
 367
 368 int WorkArea::work_area_handler(FL_OBJECT * ob, int event,
 369                                 FL_Coord, FL_Coord ,
 370                                 int key, void * xev)
 371 {
 372         static int x_old = -1;
 373         static int y_old = -1;
 374         static long scrollbar_value_old = -1;
 375
 376         XEvent * ev = static_cast<XEvent*>(xev);
 377         WorkArea * area = static_cast<WorkArea*>(ob->u_vdata);
 378
 379         if (!area) return 1;
 380
 381         switch (event) {
 382         case FL_DRAW:
 383                 if (!area->work_area ||
 384                     !area->work_area->form->visible)
 385                         return 1;
 386                 lyxerr[Debug::WORKAREA] << "Workarea event: DRAW" << endl;
 387                 area->createPixmap(area->workWidth(), area->workHeight());
 388                 area->workAreaExpose();
 389                 break;
 390         case FL_PUSH:
 391                 if (!ev || ev->xbutton.button == 0) break;
 392                 // Should really have used xbutton.state
 393                 lyxerr[Debug::WORKAREA] << "Workarea event: PUSH" << endl;
 394                 area->workAreaButtonPress(ev->xbutton.x - ob->x,
 395                                           ev->xbutton.y - ob->y,
 396                                           x_button_state(ev->xbutton.button));
 397                 break;
 398         case FL_RELEASE:
 399                 if (!ev || ev->xbutton.button == 0) break;
 400                 // Should really have used xbutton.state
 401                 lyxerr[Debug::WORKAREA] << "Workarea event: RELEASE" << endl;
 402                 area->workAreaButtonRelease(ev->xbutton.x - ob->x,
 403                                       ev->xbutton.y - ob->y,
 404                                       x_button_state(ev->xbutton.button));
 405                 break;
 406 #if FL_VERSION < 1 && FL_REVISION < 89
 407         case FL_MOUSE:
 408 #else
 409         case FL_DRAG:
 410 #endif
 411                 if (!ev || ! area->scrollbar) break;
 412                 if (ev->xmotion.x != x_old ||
 413                     ev->xmotion.y != y_old ||
 414                     fl_get_scrollbar_value(area->scrollbar) != scrollbar_value_old
 415                         ) {
 416                         lyxerr[Debug::WORKAREA] << "Workarea event: MOUSE" << endl;
 417                         area->workAreaMotionNotify(ev->xmotion.x - ob->x,
 418                                              ev->xmotion.y - ob->y,
 419                                              x_motion_state(ev->xbutton.state));
 420                 }
 421                 break;
 422 #if FL_VERSION < 1 && FL_REVISION < 89
 423         case FL_KEYBOARD:
 424 #else
 425         case FL_KEYPRESS:
 426 #endif
 427         {
 428                 lyxerr[Debug::WORKAREA] << "Workarea event: KEYBOARD" << endl;
 429
 430                 KeySym keysym = 0;
 431                 char dummy[1];
 432                 XKeyEvent * xke = reinterpret_cast<XKeyEvent *>(ev);
 433 #if FL_VERSION < 1 && (FL_REVISION < 89 || (FL_REVISION == 89 && FL_FIXLEVEL < 5))
 434                 // XForms < 0.89.5 does not have compose support
 435                 // so we are using our own compose support
 436                 LyXLookupString(ev, dummy, 1, &keysym);
 437 #else
 438                 XLookupString(xke, dummy, 1, &keysym, 0);
 439 //              int num_keys = XLookupString(xke, dummy, 10, &keysym, &xcs);
 440 //              lyxerr << "We have " << num_keys << " keys in the returned buffer" << endl;
 441 //              lyxerr << "Our dummy string is " << dummy << endl;
 442 #endif
 443                 if (lyxerr.debugging(Debug::KEY)) {
 444                         char const * tmp = XKeysymToString(key);
 445                         char const * tmp2 = XKeysymToString(keysym);
 446                         string const stm = (tmp ? tmp : "");
 447                         string const stm2 = (tmp2 ? tmp2 : "");
 448
 449                         lyxerr[Debug::KEY] << "WorkArea: Key is `" << stm << "' ["
 450                                << key << "]" << endl;
 451                         lyxerr[Debug::KEY] << "WorkArea: Keysym is `" << stm2 << "' ["
 452                                << keysym << "]" << endl;
 453                 }
 454
 455 #if FL_VERSION < 1 && (FL_REVISION < 89 || (FL_REVISION == 89 && FL_FIXLEVEL < 5))
 456                 if (keysym == NoSymbol) {
 457                         lyxerr[Debug::KEY]
 458                                 << "Empty kdb action (probably composing)"
 459                                 << endl;
 460                         break;
 461                 }
 462                 KeySym ret_key = keysym;
 463 #else
 464                 // Note that we need this handling because of a bug
 465                 // in XForms 0.89, if this bug is resolved in the way I hope
 466                 // we can just use the keysym directly with out looking
 467                 // at key at all. (Lgb)
 468                 KeySym ret_key = 0;
 469                 if (!key) {
 470                         // We migth have to add more keysyms here also,
 471                         // we will do that as the issues arise. (Lgb)
 472                         if (keysym == XK_space) {
 473                                 ret_key = keysym;
 474                                 lyxerr[Debug::KEY] << "Using keysym [A]"
 475                                                    << endl;
 476                         } else
 477                                 break;
 478                 } else {
 479                         // It seems that this was a bit optimistic...
 480                         // With this hacking things seems to be better (Lgb)
 481                         //if (!iscntrl(key)) {
 482                         //      ret_key = key;
 483                         //      lyxerr[Debug::KEY]
 484                         //              << "Using key [B]\n"
 485                         //              << "Uchar["
 486                         //              << static_cast<unsigned char>(key)
 487                         //              << endl;
 488                         //} else {
 489                                 ret_key = (keysym ? keysym : key);
 490                                 lyxerr[Debug::KEY] << "Using keysym [B]"
 491                                                    << endl;
 492                                 //}
 493                 }
 494
 495 #endif
 496                 unsigned int const ret_state = xke->state;
 497
 498                 // If you have a better way to handle "wild-output" of
 499                 // characters after the key has been released than the one
 500                 // below, please contact me. (Lgb)
 501                 static Time last_time_pressed;
 502                 static unsigned int last_key_pressed;
 503                 static unsigned int last_state_pressed;
 504                 lyxerr[Debug::KEY] << "Workarea Diff: "
 505                                    << xke->time - last_time_pressed
 506                                    << endl;
 507                 if (xke->time - last_time_pressed < 25 // should perhaps be tunable
 508                     && ret_state == last_state_pressed
 509                     && xke->keycode == last_key_pressed) {
 510                         lyxerr[Debug::KEY]
 511                                 << "Workarea: Purging X events." << endl;
 512                         //lyxerr << "Workarea Events: "
 513                         //       << XEventsQueued(fl_get_display(), QueuedAlready)
 514                         //       << endl;
 515                         if (XEventsQueued(fl_get_display(), QueuedAlready) > 0)
 516                                 XSync(fl_get_display(), 1);
 517                         // This purge make f.ex. scrolling stop immidiatly when
 518                         // releasing the PageDown button. The question is if
 519                         // this purging of XEvents can cause any harm...
 520                         // after some testing I can see no problems, but
 521                         // I'd like other reports too.
 522                         break;
 523                 }
 524                 last_time_pressed = xke->time;
 525                 last_key_pressed = xke->keycode;
 526                 last_state_pressed = ret_state;
 527
 528                 area->workAreaKeyPress(ret_key, x_key_state(ret_state));
 529         }
 530         break;
 531
 532 #if FL_VERSION > 0 || FL_REVISION >= 89
 533         case FL_KEYRELEASE:
 534                 lyxerr[Debug::WORKAREA] << "Workarea event: KEYRELEASE" << endl;
 535                 break;
 536 #endif
 537
 538         case FL_FOCUS:
 539                 lyxerr[Debug::WORKAREA] << "Workarea event: FOCUS" << endl;
 540                 area->workAreaFocus();
 541                 break;
 542         case FL_UNFOCUS:
 543                 lyxerr[Debug::WORKAREA] << "Workarea event: UNFOCUS" << endl;
 544                 area->workAreaUnfocus();
 545                 break;
 546         case FL_ENTER:
 547                 lyxerr[Debug::WORKAREA] << "Workarea event: ENTER" << endl;
 548                 break;
 549         case FL_LEAVE:
 550                 lyxerr[Debug::WORKAREA] << "Workarea event: LEAVE" << endl;
 551                 break;
 552         case FL_DBLCLICK:
 553                 if (!ev) break;
 554                 lyxerr[Debug::WORKAREA] << "Workarea event: DBLCLICK" << endl;
 555                 area->workAreaDoubleClick(ev->xbutton.x - ob->x,
 556                                           ev->xbutton.y - ob->y,
 557                                           x_button_state(ev->xbutton.button));
 558                 break;
 559         case FL_TRPLCLICK:
 560                 if (!ev) break;
 561                 lyxerr[Debug::WORKAREA] << "Workarea event: TRPLCLICK" << endl;
 562                 area->workAreaTripleClick(ev->xbutton.x - ob->x,
 563                                           ev->xbutton.y - ob->y,
 564                                           x_button_state(ev->xbutton.button));
 565                 break;
 566         case FL_OTHER:
 567                 if (!ev) break;
 568                 lyxerr[Debug::WORKAREA] << "Workarea event: OTHER" << endl;
 569                 break;
 570         }
 571
 572         return 1;
 573 }
 574
 575
 576 namespace {
 577
 578 string clipboard_selection;
 579 bool clipboard_read = false;
 580
 581 extern "C" {
 582
 583         static
 584         int request_clipboard_cb(FL_OBJECT * /*ob*/, long /*type*/,
 585                                  void const * data, long size)
 586         {
 587                 clipboard_selection.erase();
 588
 589                 if (size > 0)
 590                         clipboard_selection.reserve(size);
 591                 for (int i = 0; i < size; ++i)
 592                         clipboard_selection +=
 593                                 static_cast<char const *>(data)[i];
 594                 clipboard_read = true;
 595                 return 0;
 596         }
 597
 598 }
 599
 600 } // namespace anon
 601
 602
 603 int WorkArea::event_cb(XEvent * xev)
 604 {
 605         int ret = 0;
 606         switch (xev->type) {
 607                 case SelectionRequest:
 608                         lyxerr[Debug::GUI] << "X requested selection." << endl;
 609                         selectionRequested();
 610                         break;
 611                 case SelectionClear:
 612                         lyxerr[Debug::GUI] << "Lost selection." << endl;
 613                         selectionLost();
 614                         break;
 615         }
 616         return ret;
 617 }
 618
 619
 620 void WorkArea::haveSelection(bool yes) const
 621 {
 622         if (!yes) {
 623                 XSetSelectionOwner(fl_get_display(), XA_PRIMARY, None, CurrentTime);
 624                 return;
 625         }
 626
 627         XSetSelectionOwner(fl_get_display(), XA_PRIMARY, FL_ObjWin(work_area), CurrentTime);
 628 }
 629
 630
 631 string const WorkArea::getClipboard() const
 632 {
 633         clipboard_read = false;
 634
 635         if (fl_request_clipboard(work_area, 0, request_clipboard_cb) == -1)
 636                 return string();
 637
 638         XEvent ev;
 639
 640         while (!clipboard_read) {
 641                 if (fl_check_forms() == FL_EVENT) {
 642                         fl_XNextEvent(&ev);
 643                         lyxerr << "Received unhandled X11 event" << endl;
 644                         lyxerr << "Type: 0x" << hex << ev.xany.type <<
 645                                 " Target: 0x" << hex << ev.xany.window << endl;
 646                 }
 647         }
 648         return clipboard_selection;
 649 }
 650
 651
 652 void WorkArea::putClipboard(string const & s) const
 653 {
 654         static string hold;
 655         hold = s;
 656
 657         fl_stuff_clipboard(work_area, 0, hold.data(), hold.size(), 0);
 658 }