src/LyXView.C

   1 // -*- C++ -*-
   2 /* This file is part of
   3  * ======================================================
   4  *
   5  *           LyX, The Document Processor
   6  *
   7  *           Copyright 1995 Matthias Ettrich
   8  *           Copyright 1995-2000 The LyX Team.
   9  *
  10  * ====================================================== */
  11
  12 #include <config.h>
  13
  14 #ifdef __GNUG__
  15 #pragma implementation
  16 #endif
  17
  18 #include <sys/time.h>
  19 #include <unistd.h>
  20
  21 #include "LyXView.h"
  22 #include "lyx_main.h"
  23 #include "lyxlookup.h"
  24 #include "toolbar.h"
  25 #include "minibuffer.h"
  26 #include "lyxfunc.h"
  27 #include "lyx.xpm"
  28 #include "debug.h"
  29 #include "layout_forms.h"
  30 #include "intl.h"
  31 #include "lyxrc.h"
  32 #include "support/filetools.h"        // OnlyFilename()
  33 #include "layout.h"
  34 #include "lyxtext.h"
  35
  36 extern FD_form_document * fd_form_document;
  37
  38 extern void AutoSave();
  39 extern char updatetimer;
  40 extern void QuitLyX();
  41 LyXTextClass::size_type current_layout = 0;
  42
  43 // This is very temporary
  44 BufferView * current_view;
  45
  46 extern "C" int C_LyXView_atCloseMainFormCB(FL_FORM *, void *);
  47
  48 LyXView::LyXView(int width, int height)
  49 {
  50         create_form_form_main(width, height);
  51         fl_set_form_atclose(_form, C_LyXView_atCloseMainFormCB, 0);
  52         lyxerr[Debug::INIT] << "Initializing LyXFunc" << endl;
  53         lyxfunc = new LyXFunc(this);
  54         intl = new Intl;
  55 }
  56
  57
  58 LyXView::~LyXView()
  59 {
  60         delete menus;
  61         delete toolbar;
  62         delete bufferview;
  63         delete minibuffer;
  64         delete lyxfunc;
  65         delete intl;
  66 }
  67
  68
  69 /// Redraw the main form.
  70 void LyXView::redraw() {
  71         lyxerr[Debug::INFO] << "LyXView::redraw()" << endl;
  72         fl_redraw_form(_form);
  73         minibuffer->Activate();
  74 }
  75
  76
  77 // Callback for update timer
  78 void LyXView::UpdateTimerCB(FL_OBJECT * ob, long)
  79 {
  80         LyXView * view = static_cast<LyXView*>(ob->u_vdata);
  81         if (!view->view()->available())
  82                 return;
  83         if (!updatetimer)
  84                 return;
  85
  86         view->view()->hideCursor();
  87         view->view()->update(-2);
  88
  89         /* This update can happen, even when the work area has lost
  90          * the focus. So suppress the cursor in that case */
  91         updatetimer = 0;
  92 }
  93
  94
  95 // Wrapper for the above
  96 extern "C" void C_LyXView_UpdateTimerCB(FL_OBJECT * ob, long data)
  97 {
  98         LyXView::UpdateTimerCB(ob, data);
  99 }
 100
 101
 102 // Callback for autosave timer
 103 void LyXView::AutosaveTimerCB(FL_OBJECT *, long)
 104 {
 105         lyxerr[Debug::INFO] << "Running AutoSave()" << endl;
 106         AutoSave();
 107 }
 108
 109
 110 // Wrapper for the above
 111 extern "C" void C_LyXView_AutosaveTimerCB(FL_OBJECT * ob, long data)
 112 {
 113         LyXView::AutosaveTimerCB(ob, data);
 114 }
 115
 116
 117 /// Reset autosave timer
 118 void LyXView::resetAutosaveTimer()
 119 {
 120         if (lyxrc.autosave)
 121                 fl_set_timer(_form_main->timer_autosave, lyxrc.autosave);
 122 }
 123
 124
 125 // Callback for close main form from window manager
 126 int LyXView::atCloseMainFormCB(FL_FORM *, void *)
 127 {
 128         QuitLyX();
 129         return FL_IGNORE;
 130 }
 131
 132
 133 // Wrapper for the above
 134 extern "C" int C_LyXView_atCloseMainFormCB(FL_FORM * form, void * p)
 135 {
 136         return LyXView::atCloseMainFormCB(form, p);
 137 }
 138
 139
 140 void LyXView::setPosition(int x, int y)
 141 {
 142         fl_set_form_position(_form, x, y);
 143 }
 144
 145
 146 void LyXView::show(int place, int border, char const * title)
 147 {
 148         fl_show_form(_form, place, border, title);
 149         minibuffer->Init();
 150         InitLyXLookup(fl_display, _form->window);
 151 }
 152
 153
 154 void LyXView::create_form_form_main(int width, int height)
 155         /* to make this work as it should, .lyxrc should have been
 156          * read first; OR maybe this one should be made dynamic.
 157          * Hmmmm. Lgb.
 158          * We will probably not have lyxrc before the main form is
 159          * initialized, because error messages from lyxrc parsing
 160          * are presented (and rightly so) in GUI popups. Asger.
 161          */
 162 {
 163         FD_form_main * fdui = static_cast<FD_form_main *>
 164                 (fl_calloc(1, sizeof(FD_form_main)));
 165
 166         _form_main = fdui;
 167
 168         // the main form
 169         _form = fdui->form_main = fl_bgn_form(FL_NO_BOX, width, height);
 170         fdui->form_main->u_vdata = this;
 171         FL_OBJECT * obj = fl_add_box(FL_FLAT_BOX, 0, 0, width, height, "");
 172         fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 173
 174         // Parameters for the appearance of the main form
 175         int const air = 2;
 176         int const bw = abs(fl_get_border_width());
 177
 178         //
 179         // THE MENUBAR
 180         //
 181
 182         menus = new Menus(this, air);
 183
 184         //
 185         // TOOLBAR
 186         //
 187
 188         toolbar = new Toolbar(this, air, 30 + air + bw);
 189
 190         // Setup the toolbar
 191         toolbar->set(true);
 192
 193         //
 194         // WORKAREA
 195         //
 196
 197         int const ywork = 60 + 2 * air + bw;
 198         int const workheight = height - ywork - (25 + 2 * air);
 199
 200         ::current_view = bufferview = new BufferView(this, air, ywork,
 201                                                      width - 3 * air,
 202                                                      workheight);
 203
 204         //
 205         // MINIBUFFER
 206         //
 207
 208         minibuffer = new MiniBuffer(this, air, height - (25 + air),
 209                                     width - (2 * air), 25);
 210
 211         //
 212         // TIMERS
 213         //
 214
 215         // timer_autosave
 216         fdui->timer_autosave = obj = fl_add_timer(FL_HIDDEN_TIMER,
 217                                                   0, 0, 0, 0, "Timer");
 218         fl_set_object_callback(obj, C_LyXView_AutosaveTimerCB, 0);
 219
 220         // timer_update
 221         fdui->timer_update = obj = fl_add_timer(FL_HIDDEN_TIMER,
 222                                                 0, 0, 0, 0, "Timer");
 223         fl_set_object_callback(obj, C_LyXView_UpdateTimerCB, 0);
 224         obj->u_vdata = this;
 225
 226         //
 227         // Misc
 228         //
 229
 230         //  assign an icon to main form
 231         unsigned int w, h;
 232         Pixmap lyx_p, lyx_mask;
 233         lyx_p = fl_create_from_pixmapdata(fl_root,
 234                                           const_cast<char**>(lyx_xpm),
 235                                           &w,
 236                                           &h,
 237                                           &lyx_mask,
 238                                           0,
 239                                           0,
 240                                           0); // this leaks
 241         fl_set_form_icon(fdui->form_main, lyx_p, lyx_mask);
 242
 243         // set min size
 244         fl_set_form_minsize(fdui->form_main, 50, 50);
 245
 246         fl_end_form();
 247 }
 248
 249
 250 extern "C" int C_LyXView_KeyPressMask_raw_callback(FL_FORM * fl, void * xev);
 251
 252 void LyXView::init()
 253 {
 254         // Set the textclass choice
 255         invalidateLayoutChoice();
 256         updateLayoutChoice();
 257         UpdateDocumentClassChoice();
 258
 259         // Start autosave timer
 260         if (lyxrc.autosave)
 261                 fl_set_timer(_form_main->timer_autosave, lyxrc.autosave);
 262
 263
 264         // Install the raw callback for keyboard events
 265         fl_register_raw_callback(_form,
 266                                  KeyPressMask,
 267                                  C_LyXView_KeyPressMask_raw_callback);
 268         intl->InitKeyMapper(lyxrc.use_kbmap);
 269 }
 270
 271
 272 void LyXView::invalidateLayoutChoice()
 273 {
 274         last_textclass = -1;
 275 }
 276
 277
 278 void LyXView::updateLayoutChoice()
 279 {
 280         // Update the layout display
 281         if (!toolbar->combox) return;
 282
 283         // This has a side-effect that the layouts are not showed when no
 284         // document is loaded.
 285         if (bufferview == 0 || bufferview->buffer() == 0) {
 286                 toolbar->combox->clear();
 287                 toolbar->combox->Redraw();
 288                 return;
 289         }
 290
 291         // If textclass is different, we need to update the list
 292         if (toolbar->combox->empty() ||
 293             (last_textclass != int(buffer()->params.textclass))) {
 294                 toolbar->combox->clear();
 295                 LyXTextClass const & tc = textclasslist.TextClass(buffer()->params.textclass);
 296                 for (LyXTextClass::const_iterator cit = tc.begin();
 297                      cit != tc.end(); ++cit) {
 298                         if ((*cit).obsoleted_by().empty())
 299                                 toolbar->combox->addline((*cit).name().c_str());
 300                         else
 301                                 toolbar->combox->addline(("@N" + (*cit).name()).c_str());
 302                 }
 303                 last_textclass = int(buffer()->params.textclass);
 304                 current_layout = 0;
 305         }
 306         // we need to do this.
 307         toolbar->combox->Redraw();
 308
 309         LyXTextClass::size_type layout = bufferview->text->cursor.par->GetLayout();
 310
 311         if (layout != current_layout){
 312                 toolbar->combox->select(layout + 1);
 313                 current_layout = layout;
 314         }
 315 }
 316
 317
 318 void LyXView::UpdateDocumentClassChoice()
 319 {
 320         // Update the document class display in the document form
 321         if (fd_form_document) {
 322                 fl_clear_choice(fd_form_document->choice_class);
 323                 for (LyXTextClassList::const_iterator cit = textclasslist.begin();
 324                      cit != textclasslist.end(); ++cit) {
 325                         fl_addto_choice(fd_form_document->choice_class,
 326                                         (*cit).description().c_str());
 327                 }
 328         }
 329 }
 330
 331
 332 // This is necessary, since FL_FREE-Objects doesn't get all keypress events
 333 // as FL_KEYBOARD events :-(   Matthias 280596
 334 int LyXView::KeyPressMask_raw_callback(FL_FORM * fl, void * xev)
 335 {
 336         LyXView * view = static_cast<LyXView*>(fl->u_vdata);
 337         int retval = 0;  // 0 means XForms should have a look at this event
 338
 339         XKeyEvent * xke = static_cast<XKeyEvent*>(xev);
 340         static Time last_time_pressed = 0;
 341         static Time last_time_released = 0;
 342         static unsigned int last_key_pressed = 0;
 343         static unsigned int last_key_released = 0;
 344         static unsigned int last_state_pressed = 0;
 345         static unsigned int last_state_released = 0;
 346
 347         // funny. Even though the raw_callback is registered with KeyPressMask,
 348         // also KeyRelease-events are passed through:-(
 349         // [It seems that XForms puts them in pairs... (JMarc)]
 350         if (static_cast<XEvent*>(xev)->type == KeyPress
 351             && view->bufferview->focus()
 352             && view->bufferview->active())
 353                 {
 354                 last_time_pressed = xke->time;
 355                 last_key_pressed = xke->keycode;
 356                 last_state_pressed = xke->state;
 357                 retval = view->getLyXFunc()
 358                         ->processKeyEvent(static_cast<XEvent*>(xev));
 359         }
 360         else if (static_cast<XEvent*>(xev)->type == KeyRelease
 361                  && view->bufferview->focus()
 362                  && view->bufferview->active())
 363 {
 364                 last_time_released = xke->time;
 365                 last_key_released = xke->keycode;
 366                 last_state_released = xke->state;
 367         }
 368
 369         if (last_key_released == last_key_pressed
 370             && last_state_released == last_state_pressed
 371             && last_time_released == last_time_pressed) {
 372                 // When the diff between last_time_released and
 373                 // last_time_pressed is 0, that sinifies an autoreapeat
 374                 // at least on my system. It like some feedback from
 375                 // others, especially from user running LyX remote.
 376                 //lyxerr << "Syncing - purging X events." << endl;
 377                 XSync(fl_get_display(), 1);
 378                 // This purge make f.ex. scrolling stop imidiatly when
 379                 // releaseing the PageDown button. The question is if this
 380                 // purging of XEvents can cause any harm...after some testing
 381                 // I can see no problems, but I'd like other reports too.
 382         }
 383         return retval;
 384 }
 385
 386
 387 // wrapper for the above
 388 extern "C" int C_LyXView_KeyPressMask_raw_callback(FL_FORM * fl, void * xev)
 389 {
 390         return LyXView::KeyPressMask_raw_callback(fl, xev);
 391 }
 392
 393
 394 // Updates the title of the window with the filename of the current document
 395 void LyXView::updateWindowTitle()
 396 {
 397         static string last_title = "LyX";
 398         string title = "LyX";
 399
 400         if (view()->available()) {
 401                 string cur_title = buffer()->fileName();
 402                 if (!cur_title.empty()){
 403                         title += ": " + OnlyFilename(cur_title);
 404                         if (!buffer()->isLyxClean())
 405                                 title += _(" (Changed)");
 406                         if (buffer()->isReadonly())
 407                                 title += _(" (read only)");
 408                 }
 409         }
 410         // Don't update title if it's the same as last time
 411         if (title != last_title) {
 412                 fl_set_form_title(_form, title.c_str());
 413                 last_title = title;
 414         }
 415 }