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 using std::endl;
  37
  38 extern FD_form_document * fd_form_document;
  39
  40 extern void AutoSave();
  41 extern char updatetimer;
  42 extern void QuitLyX();
  43 LyXTextClass::size_type current_layout = 0;
  44
  45 // This is very temporary
  46 BufferView * current_view;
  47
  48 extern "C" int C_LyXView_atCloseMainFormCB(FL_FORM *, void *);
  49
  50 LyXView::LyXView(int width, int height)
  51 {
  52         create_form_form_main(width, height);
  53         fl_set_form_atclose(_form, C_LyXView_atCloseMainFormCB, 0);
  54         lyxerr[Debug::INIT] << "Initializing LyXFunc" << endl;
  55         lyxfunc = new LyXFunc(this);
  56         intl = new Intl;
  57 }
  58
  59
  60 LyXView::~LyXView()
  61 {
  62         delete menus;
  63         delete toolbar;
  64         delete bufferview;
  65         delete minibuffer;
  66         delete lyxfunc;
  67         delete intl;
  68 }
  69
  70
  71 /// Redraw the main form.
  72 void LyXView::redraw() {
  73         lyxerr[Debug::INFO] << "LyXView::redraw()" << endl;
  74         fl_redraw_form(_form);
  75         minibuffer->Activate();
  76 }
  77
  78
  79 // Callback for update timer
  80 void LyXView::UpdateTimerCB(FL_OBJECT * ob, long)
  81 {
  82         LyXView * view = static_cast<LyXView*>(ob->u_vdata);
  83         if (!view->view()->available())
  84                 return;
  85         if (!updatetimer)
  86                 return;
  87
  88         view->view()->hideCursor();
  89         view->view()->update(-2);
  90
  91         /* This update can happen, even when the work area has lost
  92          * the focus. So suppress the cursor in that case */
  93         updatetimer = 0;
  94 }
  95
  96
  97 // Wrapper for the above
  98 extern "C" void C_LyXView_UpdateTimerCB(FL_OBJECT * ob, long data)
  99 {
 100         LyXView::UpdateTimerCB(ob, data);
 101 }
 102
 103
 104 // Callback for autosave timer
 105 void LyXView::AutosaveTimerCB(FL_OBJECT *, long)
 106 {
 107         lyxerr[Debug::INFO] << "Running AutoSave()" << endl;
 108         AutoSave();
 109 }
 110
 111
 112 // Wrapper for the above
 113 extern "C" void C_LyXView_AutosaveTimerCB(FL_OBJECT * ob, long data)
 114 {
 115         LyXView::AutosaveTimerCB(ob, data);
 116 }
 117
 118
 119 /// Reset autosave timer
 120 void LyXView::resetAutosaveTimer()
 121 {
 122         if (lyxrc.autosave)
 123                 fl_set_timer(_form_main->timer_autosave, lyxrc.autosave);
 124 }
 125
 126
 127 // Callback for close main form from window manager
 128 int LyXView::atCloseMainFormCB(FL_FORM *, void *)
 129 {
 130         QuitLyX();
 131         return FL_IGNORE;
 132 }
 133
 134
 135 // Wrapper for the above
 136 extern "C" int C_LyXView_atCloseMainFormCB(FL_FORM * form, void * p)
 137 {
 138         return LyXView::atCloseMainFormCB(form, p);
 139 }
 140
 141
 142 void LyXView::setPosition(int x, int y)
 143 {
 144         fl_set_form_position(_form, x, y);
 145 }
 146
 147
 148 void LyXView::show(int place, int border, char const * title)
 149 {
 150         fl_show_form(_form, place, border, title);
 151         minibuffer->Init();
 152         InitLyXLookup(fl_display, _form->window);
 153 }
 154
 155
 156 void LyXView::create_form_form_main(int width, int height)
 157         /* to make this work as it should, .lyxrc should have been
 158          * read first; OR maybe this one should be made dynamic.
 159          * Hmmmm. Lgb.
 160          * We will probably not have lyxrc before the main form is
 161          * initialized, because error messages from lyxrc parsing
 162          * are presented (and rightly so) in GUI popups. Asger.
 163          */
 164 {
 165         FD_form_main * fdui = static_cast<FD_form_main *>
 166                 (fl_calloc(1, sizeof(FD_form_main)));
 167
 168         _form_main = fdui;
 169
 170         // the main form
 171         _form = fdui->form_main = fl_bgn_form(FL_NO_BOX, width, height);
 172         fdui->form_main->u_vdata = this;
 173         FL_OBJECT * obj = fl_add_box(FL_FLAT_BOX, 0, 0, width, height, "");
 174         fl_set_object_color(obj, FL_MCOL, FL_MCOL);
 175
 176         // Parameters for the appearance of the main form
 177         int const air = 2;
 178         int const bw = abs(fl_get_border_width());
 179
 180         //
 181         // THE MENUBAR
 182         //
 183
 184         menus = new Menus(this, air);
 185
 186         //
 187         // TOOLBAR
 188         //
 189
 190         toolbar = new Toolbar(this, air, 30 + air + bw);
 191
 192         // Setup the toolbar
 193         toolbar->set(true);
 194
 195         //
 196         // WORKAREA
 197         //
 198
 199         int const ywork = 60 + 2 * air + bw;
 200         int const workheight = height - ywork - (25 + 2 * air);
 201
 202         ::current_view = bufferview = new BufferView(this, air, ywork,
 203                                                      width - 3 * air,
 204                                                      workheight);
 205
 206         //
 207         // MINIBUFFER
 208         //
 209
 210         minibuffer = new MiniBuffer(this, air, height - (25 + air),
 211                                     width - (2 * air), 25);
 212
 213         //
 214         // TIMERS
 215         //
 216
 217         // timer_autosave
 218         fdui->timer_autosave = obj = fl_add_timer(FL_HIDDEN_TIMER,
 219                                                   0, 0, 0, 0, "Timer");
 220         fl_set_object_callback(obj, C_LyXView_AutosaveTimerCB, 0);
 221
 222         // timer_update
 223         fdui->timer_update = obj = fl_add_timer(FL_HIDDEN_TIMER,
 224                                                 0, 0, 0, 0, "Timer");
 225         fl_set_object_callback(obj, C_LyXView_UpdateTimerCB, 0);
 226         obj->u_vdata = this;
 227
 228         //
 229         // Misc
 230         //
 231
 232         //  assign an icon to main form
 233         unsigned int w, h;
 234         Pixmap lyx_p, lyx_mask;
 235         lyx_p = fl_create_from_pixmapdata(fl_root,
 236                                           const_cast<char**>(lyx_xpm),
 237                                           &w,
 238                                           &h,
 239                                           &lyx_mask,
 240                                           0,
 241                                           0,
 242                                           0); // this leaks
 243         fl_set_form_icon(fdui->form_main, lyx_p, lyx_mask);
 244
 245         // set min size
 246         fl_set_form_minsize(fdui->form_main, 50, 50);
 247
 248         fl_end_form();
 249 }
 250
 251
 252 extern "C" int C_LyXView_KeyPressMask_raw_callback(FL_FORM * fl, void * xev);
 253
 254 void LyXView::init()
 255 {
 256         // Set the textclass choice
 257         invalidateLayoutChoice();
 258         updateLayoutChoice();
 259         UpdateDocumentClassChoice();
 260
 261         // Start autosave timer
 262         if (lyxrc.autosave)
 263                 fl_set_timer(_form_main->timer_autosave, lyxrc.autosave);
 264
 265
 266         // Install the raw callback for keyboard events
 267         fl_register_raw_callback(_form,
 268                                  KeyPressMask,
 269                                  C_LyXView_KeyPressMask_raw_callback);
 270         intl->InitKeyMapper(lyxrc.use_kbmap);
 271 }
 272
 273
 274 void LyXView::invalidateLayoutChoice()
 275 {
 276         last_textclass = -1;
 277 }
 278
 279
 280 void LyXView::updateLayoutChoice()
 281 {
 282         // Update the layout display
 283         if (!toolbar->combox) return;
 284
 285         // This has a side-effect that the layouts are not showed when no
 286         // document is loaded.
 287         if (bufferview == 0 || bufferview->buffer() == 0) {
 288                 toolbar->combox->clear();
 289                 toolbar->combox->Redraw();
 290                 return;
 291         }
 292
 293         // If textclass is different, we need to update the list
 294         if (toolbar->combox->empty() ||
 295             (last_textclass != int(buffer()->params.textclass))) {
 296                 toolbar->combox->clear();
 297                 LyXTextClass const & tc = textclasslist.TextClass(buffer()->params.textclass);
 298                 for (LyXTextClass::const_iterator cit = tc.begin();
 299                      cit != tc.end(); ++cit) {
 300                         if ((*cit).obsoleted_by().empty())
 301                                 toolbar->combox->addline((*cit).name().c_str());
 302                         else
 303                                 toolbar->combox->addline(("@N" + (*cit).name()).c_str());
 304                 }
 305                 last_textclass = int(buffer()->params.textclass);
 306                 current_layout = 0;
 307         }
 308         // we need to do this.
 309         toolbar->combox->Redraw();
 310
 311         LyXTextClass::size_type layout = bufferview->text->cursor.par->GetLayout();
 312
 313         if (layout != current_layout){
 314                 toolbar->combox->select(layout + 1);
 315                 current_layout = layout;
 316         }
 317 }
 318
 319
 320 void LyXView::UpdateDocumentClassChoice()
 321 {
 322         // Update the document class display in the document form
 323         if (fd_form_document) {
 324                 fl_clear_choice(fd_form_document->choice_class);
 325                 for (LyXTextClassList::const_iterator cit = textclasslist.begin();
 326                      cit != textclasslist.end(); ++cit) {
 327                         fl_addto_choice(fd_form_document->choice_class,
 328                                         (*cit).description().c_str());
 329                 }
 330         }
 331 }
 332
 333
 334 // This is necessary, since FL_FREE-Objects doesn't get all keypress events
 335 // as FL_KEYBOARD events :-(   Matthias 280596
 336 int LyXView::KeyPressMask_raw_callback(FL_FORM * fl, void * xev)
 337 {
 338         LyXView * view = static_cast<LyXView*>(fl->u_vdata);
 339         int retval = 0;  // 0 means XForms should have a look at this event
 340
 341         XKeyEvent * xke = static_cast<XKeyEvent*>(xev);
 342         static Time last_time_pressed = 0;
 343         static Time last_time_released = 0;
 344         static unsigned int last_key_pressed = 0;
 345         static unsigned int last_key_released = 0;
 346         static unsigned int last_state_pressed = 0;
 347         static unsigned int last_state_released = 0;
 348
 349         // funny. Even though the raw_callback is registered with KeyPressMask,
 350         // also KeyRelease-events are passed through:-(
 351         // [It seems that XForms puts them in pairs... (JMarc)]
 352         if (static_cast<XEvent*>(xev)->type == KeyPress
 353             && view->bufferview->focus()
 354             && view->bufferview->active())
 355                 {
 356                 last_time_pressed = xke->time;
 357                 last_key_pressed = xke->keycode;
 358                 last_state_pressed = xke->state;
 359                 retval = view->getLyXFunc()
 360                         ->processKeyEvent(static_cast<XEvent*>(xev));
 361         }
 362         else if (static_cast<XEvent*>(xev)->type == KeyRelease
 363                  && view->bufferview->focus()
 364                  && view->bufferview->active())
 365 {
 366                 last_time_released = xke->time;
 367                 last_key_released = xke->keycode;
 368                 last_state_released = xke->state;
 369         }
 370
 371         if (last_key_released == last_key_pressed
 372             && last_state_released == last_state_pressed
 373             && last_time_released == last_time_pressed) {
 374                 // When the diff between last_time_released and
 375                 // last_time_pressed is 0, that sinifies an autoreapeat
 376                 // at least on my system. It like some feedback from
 377                 // others, especially from user running LyX remote.
 378                 //lyxerr << "Syncing - purging X events." << endl;
 379                 XSync(fl_get_display(), 1);
 380                 // This purge make f.ex. scrolling stop imidiatly when
 381                 // releaseing the PageDown button. The question is if this
 382                 // purging of XEvents can cause any harm...after some testing
 383                 // I can see no problems, but I'd like other reports too.
 384         }
 385         return retval;
 386 }
 387
 388
 389 // wrapper for the above
 390 extern "C" int C_LyXView_KeyPressMask_raw_callback(FL_FORM * fl, void * xev)
 391 {
 392         return LyXView::KeyPressMask_raw_callback(fl, xev);
 393 }
 394
 395
 396 // Updates the title of the window with the filename of the current document
 397 void LyXView::updateWindowTitle()
 398 {
 399         static string last_title = "LyX";
 400         string title = "LyX";
 401
 402         if (view()->available()) {
 403                 string cur_title = buffer()->fileName();
 404                 if (!cur_title.empty()){
 405                         title += ": " + OnlyFilename(cur_title);
 406                         if (!buffer()->isLyxClean())
 407                                 title += _(" (Changed)");
 408                         if (buffer()->isReadonly())
 409                                 title += _(" (read only)");
 410                 }
 411         }
 412         // Don't update title if it's the same as last time
 413         if (title != last_title) {
 414                 fl_set_form_title(_form, title.c_str());
 415                 last_title = title;
 416         }
 417 }