src/insets/InsetCollapsable.cpp

   1 /**
   2  * \file InsetCollapsable.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Alejandro Aguilar Sierra
   7  * \author Jürgen Vigna
   8  * \author Lars Gullik Bjønnes
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "InsetCollapsable.h"
  16
  17 #include "Buffer.h"
  18 #include "BufferView.h"
  19 #include "Cursor.h"
  20 #include "Dimension.h"
  21 #include "FuncRequest.h"
  22 #include "FuncStatus.h"
  23 #include "InsetLayout.h"
  24 #include "Lexer.h"
  25 #include "MetricsInfo.h"
  26 #include "OutputParams.h"
  27
  28 #include "frontends/FontMetrics.h"
  29 #include "frontends/Painter.h"
  30
  31 #include "support/debug.h"
  32 #include "support/docstream.h"
  33 #include "support/gettext.h"
  34 #include "support/lassert.h"
  35 #include "support/lstrings.h"
  36 #include "support/RefChanger.h"
  37
  38 using namespace std;
  39
  40
  41 namespace lyx {
  42
  43 InsetCollapsable::InsetCollapsable(Buffer * buf, InsetText::UsePlain ltype)
  44         : InsetText(buf, ltype), status_(Open)
  45 {
  46         setDrawFrame(true);
  47         setFrameColor(Color_collapsableframe);
  48 }
  49
  50
  51 // The sole purpose of this copy constructor is to make sure
  52 // that the view_ map is not copied and remains empty.
  53 InsetCollapsable::InsetCollapsable(InsetCollapsable const & rhs)
  54         : InsetText(rhs),
  55           status_(rhs.status_),
  56           labelstring_(rhs.labelstring_)
  57 {}
  58
  59
  60 InsetCollapsable::~InsetCollapsable()
  61 {
  62         map<BufferView const *, View>::iterator it = view_.begin();
  63         map<BufferView const *, View>::iterator end = view_.end();
  64         for (; it != end; ++it)
  65                 if (it->second.mouse_hover_)
  66                         it->first->clearLastInset(this);
  67 }
  68
  69
  70 InsetCollapsable::CollapseStatus InsetCollapsable::status(BufferView const & bv) const
  71 {
  72         if (decoration() == InsetLayout::CONGLOMERATE)
  73                 return status_;
  74         return view_[&bv].auto_open_ ? Open : status_;
  75 }
  76
  77
  78 InsetCollapsable::Geometry InsetCollapsable::geometry(BufferView const & bv) const
  79 {
  80         switch (decoration()) {
  81         case InsetLayout::CLASSIC:
  82                 if (status(bv) == Open)
  83                         return view_[&bv].openinlined_ ? LeftButton : TopButton;
  84                 return ButtonOnly;
  85
  86         case InsetLayout::MINIMALISTIC:
  87                 return status(bv) == Open ? NoButton : ButtonOnly ;
  88
  89         case InsetLayout::CONGLOMERATE:
  90                 return status(bv) == Open ? SubLabel : Corners ;
  91
  92         case InsetLayout::DEFAULT:
  93                 break; // this shouldn't happen
  94         }
  95
  96         // dummy return value to shut down a warning,
  97         // this is dead code.
  98         return NoButton;
  99 }
 100
 101
 102 docstring InsetCollapsable::toolTip(BufferView const & bv, int x, int y) const
 103 {
 104         Dimension const dim = dimensionCollapsed(bv);
 105         if (geometry(bv) == NoButton)
 106                 return translateIfPossible(getLayout().labelstring());
 107         if (x > xo(bv) + dim.wid || y > yo(bv) + dim.des || isOpen(bv))
 108                 return docstring();
 109
 110         return toolTipText();
 111 }
 112
 113
 114 void InsetCollapsable::write(ostream & os) const
 115 {
 116         os << "status ";
 117         switch (status_) {
 118         case Open:
 119                 os << "open";
 120                 break;
 121         case Collapsed:
 122                 os << "collapsed";
 123                 break;
 124         }
 125         os << "\n";
 126         text().write(os);
 127 }
 128
 129
 130 void InsetCollapsable::read(Lexer & lex)
 131 {
 132         lex.setContext("InsetCollapsable::read");
 133         string tmp_token;
 134         status_ = Collapsed;
 135         lex >> "status" >> tmp_token;
 136         if (tmp_token == "open")
 137                 status_ = Open;
 138
 139         InsetText::read(lex);
 140         setButtonLabel();
 141 }
 142
 143
 144 Dimension InsetCollapsable::dimensionCollapsed(BufferView const & bv) const
 145 {
 146         Dimension dim;
 147         FontInfo labelfont(getLabelfont());
 148         labelfont.realize(sane_font);
 149         theFontMetrics(labelfont).buttonText(
 150                 buttonLabel(bv), dim.wid, dim.asc, dim.des);
 151         return dim;
 152 }
 153
 154
 155 void InsetCollapsable::metrics(MetricsInfo & mi, Dimension & dim) const
 156 {
 157         view_[mi.base.bv].auto_open_ = mi.base.bv->cursor().isInside(this);
 158
 159         FontInfo tmpfont = mi.base.font;
 160         mi.base.font = getFont();
 161         mi.base.font.realize(tmpfont);
 162
 163         BufferView const & bv = *mi.base.bv;
 164
 165         switch (geometry(bv)) {
 166         case NoButton:
 167                 InsetText::metrics(mi, dim);
 168                 break;
 169         case Corners:
 170                 InsetText::metrics(mi, dim);
 171                 dim.des -= 3;
 172                 dim.asc -= 1;
 173                 break;
 174         case SubLabel: {
 175                 InsetText::metrics(mi, dim);
 176                 // consider width of the inset label
 177                 FontInfo font(getLabelfont());
 178                 font.realize(sane_font);
 179                 font.decSize();
 180                 font.decSize();
 181                 int w = 0;
 182                 int a = 0;
 183                 int d = 0;
 184                 theFontMetrics(font).rectText(buttonLabel(bv), w, a, d);
 185                 dim.des += a + d;
 186                 break;
 187                 }
 188         case TopButton:
 189         case LeftButton:
 190         case ButtonOnly:
 191                 if (hasFixedWidth()){
 192                         int const mindim = view_[&bv].button_dim_.x2 - view_[&bv].button_dim_.x1;
 193                         if (mi.base.textwidth < mindim)
 194                                 mi.base.textwidth = mindim;
 195                 }
 196                 dim = dimensionCollapsed(bv);
 197                 if (geometry(bv) == TopButton || geometry(bv) == LeftButton) {
 198                         Dimension textdim;
 199                         InsetText::metrics(mi, textdim);
 200                         view_[&bv].openinlined_ = (textdim.wid + dim.wid) < mi.base.textwidth;
 201                         if (view_[&bv].openinlined_) {
 202                                 // Correct for button width.
 203                                 dim.wid += textdim.wid;
 204                                 dim.des = max(dim.des - textdim.asc + dim.asc, textdim.des);
 205                                 dim.asc = textdim.asc;
 206                         } else {
 207                                 dim.des += textdim.height() + TEXT_TO_INSET_OFFSET;
 208                                 dim.wid = max(dim.wid, textdim.wid);
 209                         }
 210                 }
 211                 break;
 212         }
 213
 214         mi.base.font = tmpfont;
 215 }
 216
 217
 218 bool InsetCollapsable::setMouseHover(BufferView const * bv, bool mouse_hover)
 219         const
 220 {
 221         view_[bv].mouse_hover_ = mouse_hover;
 222         return true;
 223 }
 224
 225
 226 void InsetCollapsable::draw(PainterInfo & pi, int x, int y) const
 227 {
 228         BufferView const & bv = *pi.base.bv;
 229
 230         view_[&bv].auto_open_ = bv.cursor().isInside(this);
 231
 232         Changer dummy = pi.base.font.change(getFont(), true);
 233
 234         // Draw button first -- top, left or only
 235         Dimension dimc = dimensionCollapsed(bv);
 236
 237         if (geometry(bv) == TopButton ||
 238             geometry(bv) == LeftButton ||
 239             geometry(bv) == ButtonOnly) {
 240                 view_[&bv].button_dim_.x1 = x + 0;
 241                 view_[&bv].button_dim_.x2 = x + dimc.width();
 242                 view_[&bv].button_dim_.y1 = y - dimc.asc;
 243                 view_[&bv].button_dim_.y2 = y + dimc.des;
 244
 245                 FontInfo labelfont = getLabelfont();
 246                 labelfont.setColor(labelColor());
 247                 pi.pain.buttonText(x, y, buttonLabel(bv), labelfont,
 248                                    view_[&bv].mouse_hover_);
 249                 // Draw the change tracking cue on the label, unless RowPainter already
 250                 // takes care of it.
 251                 if (canPaintChange(bv))
 252                         pi.change_.paintCue(pi, x, y, x + dimc.width(), labelfont);
 253         } else {
 254                 view_[&bv].button_dim_.x1 = 0;
 255                 view_[&bv].button_dim_.y1 = 0;
 256                 view_[&bv].button_dim_.x2 = 0;
 257                 view_[&bv].button_dim_.y2 = 0;
 258         }
 259
 260         Dimension const textdim = InsetText::dimension(bv);
 261         int const baseline = y;
 262         int textx, texty;
 263         Geometry g = geometry(bv);
 264         switch (g) {
 265         case LeftButton:
 266         case TopButton: {
 267                 if (g == LeftButton) {
 268                         textx = x + dimc.width();
 269                         texty = baseline;
 270                 } else {
 271                         textx = x;
 272                         texty = baseline + dimc.des + textdim.asc;
 273                 }
 274                 // Do not draw the cue for INSERTED -- it is already in the button and
 275                 // that's enough.
 276                 Changer dummy = make_change(pi.change_, Change(),
 277                                             pi.change_.type == Change::INSERTED);
 278                 InsetText::draw(pi, textx, texty);
 279                 break;
 280         }
 281         case ButtonOnly:
 282                 break;
 283         case NoButton:
 284                 textx = x;
 285                 texty = baseline;
 286                 InsetText::draw(pi, textx, texty);
 287                 break;
 288         case SubLabel:
 289         case Corners:
 290                 textx = x;
 291                 texty = baseline;
 292                 {       // We will take care of the frame and the change tracking cue
 293                         // ourselves, below.
 294                         Changer dummy = make_change(pi.change_, Change());
 295                         const_cast<InsetCollapsable *>(this)->setDrawFrame(false);
 296                         InsetText::draw(pi, textx, texty);
 297                         const_cast<InsetCollapsable *>(this)->setDrawFrame(true);
 298                 }
 299
 300                 int desc = textdim.descent();
 301                 if (g == Corners)
 302                         desc -= 3;
 303
 304                 // Colour the frame according to the change type. (Like for tables.)
 305                 Color colour = pi.change_.changed() ? pi.change_.color()
 306                                                     : Color_foreground;
 307                 const int xx1 = x + TEXT_TO_INSET_OFFSET - 1;
 308                 const int xx2 = x + textdim.wid - TEXT_TO_INSET_OFFSET + 1;
 309                 pi.pain.line(xx1, y + desc - 4,
 310                              xx1, y + desc, colour);
 311                 if (status_ == Open)
 312                         pi.pain.line(xx1, y + desc,
 313                                      xx2, y + desc, colour);
 314                 else {
 315                         // Make status_ value visible:
 316                         pi.pain.line(xx1, y + desc,
 317                                      xx1 + 4, y + desc, colour);
 318                         pi.pain.line(xx2 - 4, y + desc,
 319                                      xx2, y + desc, colour);
 320                 }
 321                 pi.pain.line(x + textdim.wid - 3, y + desc, x + textdim.wid - 3,
 322                              y + desc - 4, colour);
 323
 324                 // the label below the text. Can be toggled.
 325                 if (g == SubLabel) {
 326                         FontInfo font(getLabelfont());
 327                         if (pi.change_.changed())
 328                                 font.setPaintColor(colour);
 329                         font.realize(sane_font);
 330                         font.decSize();
 331                         font.decSize();
 332                         int w = 0;
 333                         int a = 0;
 334                         int d = 0;
 335                         theFontMetrics(font).rectText(buttonLabel(bv), w, a, d);
 336                         int const ww = max(textdim.wid, w);
 337                         pi.pain.rectText(x + (ww - w) / 2, y + desc + a,
 338                                 buttonLabel(bv), font, Color_none, Color_none);
 339                 }
 340
 341                 int const y1 = y - textdim.asc + 3;
 342                 // a visual cue when the cursor is inside the inset
 343                 Cursor const & cur = bv.cursor();
 344                 if (cur.isInside(this)) {
 345                         pi.pain.line(xx1, y1 + 4, xx1, y1, colour);
 346                         pi.pain.line(xx1 + 4, y1, xx1, y1, colour);
 347                         pi.pain.line(xx2, y1 + 4, xx2, y1, colour);
 348                         pi.pain.line(xx2 - 4, y1, xx2, y1, colour);
 349                 }
 350                 // Strike through the inset if deleted and not already handled by
 351                 // RowPainter.
 352                 if (pi.change_.deleted() && canPaintChange(bv))
 353                         pi.change_.paintCue(pi, xx1, y1, xx2, y + desc);
 354                 break;
 355         }
 356 }
 357
 358
 359 void InsetCollapsable::cursorPos(BufferView const & bv,
 360                 CursorSlice const & sl, bool boundary, int & x, int & y) const
 361 {
 362         if (geometry(bv) == ButtonOnly)
 363                 status_ = Open;
 364
 365         InsetText::cursorPos(bv, sl, boundary, x, y);
 366         Dimension const textdim = InsetText::dimension(bv);
 367
 368         switch (geometry(bv)) {
 369         case LeftButton:
 370                 x += dimensionCollapsed(bv).wid;
 371                 break;
 372         case TopButton: {
 373                 y += dimensionCollapsed(bv).des + textdim.asc;
 374                 break;
 375         }
 376         case NoButton:
 377         case SubLabel:
 378         case Corners:
 379                 // Do nothing
 380                 break;
 381         case ButtonOnly:
 382                 // Cannot get here
 383                 break;
 384         }
 385 }
 386
 387
 388 bool InsetCollapsable::editable() const
 389 {
 390         switch (decoration()) {
 391         case InsetLayout::CLASSIC:
 392         case InsetLayout::MINIMALISTIC:
 393                 return status_ == Open;
 394         default:
 395                 return true;
 396         }
 397 }
 398
 399
 400 bool InsetCollapsable::descendable(BufferView const & bv) const
 401 {
 402         return geometry(bv) != ButtonOnly;
 403 }
 404
 405
 406 bool InsetCollapsable::clickable(BufferView const & bv, int x, int y) const
 407 {
 408         return view_[&bv].button_dim_.contains(x, y);
 409 }
 410
 411
 412 docstring const InsetCollapsable::getNewLabel(docstring const & l) const
 413 {
 414         docstring label;
 415         pos_type const max_length = 15;
 416         pos_type const p_siz = paragraphs().begin()->size();
 417         pos_type const n = min(max_length, p_siz);
 418         pos_type i = 0;
 419         pos_type j = 0;
 420         for (; i < n && j < p_siz; ++j) {
 421                 if (paragraphs().begin()->isInset(j))
 422                         continue;
 423                 label += paragraphs().begin()->getChar(j);
 424                 ++i;
 425         }
 426         if (paragraphs().size() > 1 || (i > 0 && j < p_siz)) {
 427                 label += "...";
 428         }
 429         return label.empty() ? l : label;
 430 }
 431
 432
 433 void InsetCollapsable::edit(Cursor & cur, bool front, EntryDirection entry_from)
 434 {
 435         //lyxerr << "InsetCollapsable: edit left/right" << endl;
 436         cur.push(*this);
 437         InsetText::edit(cur, front, entry_from);
 438 }
 439
 440
 441 Inset * InsetCollapsable::editXY(Cursor & cur, int x, int y)
 442 {
 443         //lyxerr << "InsetCollapsable: edit xy" << endl;
 444         if (geometry(cur.bv()) == ButtonOnly
 445             || (view_[&cur.bv()].button_dim_.contains(x, y)
 446                 && geometry(cur.bv()) != NoButton))
 447                 return this;
 448         cur.push(*this);
 449         return InsetText::editXY(cur, x, y);
 450 }
 451
 452
 453 void InsetCollapsable::doDispatch(Cursor & cur, FuncRequest & cmd)
 454 {
 455         //lyxerr << "InsetCollapsable::doDispatch (begin): cmd: " << cmd
 456         //      << " cur: " << cur << " bvcur: " << cur.bv().cursor() << endl;
 457
 458         bool const hitButton = clickable(cur.bv(), cmd.x(), cmd.y());
 459
 460         switch (cmd.action()) {
 461         case LFUN_MOUSE_PRESS:
 462                 if (hitButton) {
 463                         switch (cmd.button()) {
 464                         case mouse_button::button1:
 465                         case mouse_button::button3:
 466                                 // Pass the command to the enclosing InsetText,
 467                                 // so that the cursor gets set.
 468                                 cur.undispatched();
 469                                 break;
 470                         case mouse_button::none:
 471                         case mouse_button::button2:
 472                         case mouse_button::button4:
 473                         case mouse_button::button5:
 474                                 // Nothing to do.
 475                                 cur.noScreenUpdate();
 476                                 break;
 477                         }
 478                 } else if (geometry(cur.bv()) != ButtonOnly)
 479                         InsetText::doDispatch(cur, cmd);
 480                 else
 481                         cur.undispatched();
 482                 break;
 483
 484         case LFUN_MOUSE_MOTION:
 485         case LFUN_MOUSE_DOUBLE:
 486         case LFUN_MOUSE_TRIPLE:
 487                 if (hitButton)
 488                         cur.noScreenUpdate();
 489                 else if (geometry(cur.bv()) != ButtonOnly)
 490                         InsetText::doDispatch(cur, cmd);
 491                 else
 492                         cur.undispatched();
 493                 break;
 494
 495         case LFUN_MOUSE_RELEASE:
 496                 if (!hitButton) {
 497                         // The mouse click has to be within the inset!
 498                         if (geometry(cur.bv()) != ButtonOnly)
 499                                 InsetText::doDispatch(cur, cmd);
 500                         else
 501                                 cur.undispatched();
 502                         break;
 503                 }
 504                 if (cmd.button() != mouse_button::button1) {
 505                         // Nothing to do.
 506                         cur.noScreenUpdate();
 507                         break;
 508                 }
 509                 // if we are selecting, we do not want to
 510                 // toggle the inset.
 511                 if (cur.selection())
 512                         break;
 513                 // Left button is clicked, the user asks to
 514                 // toggle the inset visual state.
 515                 cur.dispatched();
 516                 cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 517                 if (geometry(cur.bv()) == ButtonOnly) {
 518                         setStatus(cur, Open);
 519                         edit(cur, true);
 520                 }
 521                 else
 522                         setStatus(cur, Collapsed);
 523                 cur.bv().cursor() = cur;
 524                 break;
 525
 526         case LFUN_INSET_TOGGLE:
 527                 if (cmd.argument() == "open")
 528                         setStatus(cur, Open);
 529                 else if (cmd.argument() == "close")
 530                         setStatus(cur, Collapsed);
 531                 else if (cmd.argument() == "toggle" || cmd.argument().empty())
 532                         if (status_ == Open)
 533                                 setStatus(cur, Collapsed);
 534                         else
 535                                 setStatus(cur, Open);
 536                 else // if assign or anything else
 537                         cur.undispatched();
 538                 cur.dispatched();
 539                 break;
 540
 541         default:
 542                 InsetText::doDispatch(cur, cmd);
 543                 break;
 544         }
 545 }
 546
 547
 548 bool InsetCollapsable::getStatus(Cursor & cur, FuncRequest const & cmd,
 549                 FuncStatus & flag) const
 550 {
 551         switch (cmd.action()) {
 552         case LFUN_INSET_TOGGLE:
 553                 if (cmd.argument() == "open")
 554                         flag.setEnabled(status_ != Open);
 555                 else if (cmd.argument() == "close")
 556                         flag.setEnabled(status_ == Open);
 557                 else if (cmd.argument() == "toggle" || cmd.argument().empty()) {
 558                         flag.setEnabled(true);
 559                         flag.setOnOff(status_ == Open);
 560                 } else
 561                         flag.setEnabled(false);
 562                 return true;
 563
 564         default:
 565                 return InsetText::getStatus(cur, cmd, flag);
 566         }
 567 }
 568
 569
 570 void InsetCollapsable::setLabel(docstring const & l)
 571 {
 572         labelstring_ = l;
 573 }
 574
 575
 576 docstring const InsetCollapsable::buttonLabel(BufferView const & bv) const
 577 {
 578         InsetLayout const & il = getLayout();
 579         docstring const label = labelstring_.empty() ?
 580                 translateIfPossible(il.labelstring()) : labelstring_;
 581         if (!il.contentaslabel() || geometry(bv) != ButtonOnly)
 582                 return label;
 583         return getNewLabel(label);
 584 }
 585
 586
 587 void InsetCollapsable::setStatus(Cursor & cur, CollapseStatus status)
 588 {
 589         status_ = status;
 590         setButtonLabel();
 591         if (status_ == Collapsed)
 592                 cur.leaveInset(*this);
 593 }
 594
 595
 596 InsetLayout::InsetDecoration InsetCollapsable::decoration() const
 597 {
 598         InsetLayout::InsetDecoration const dec = getLayout().decoration();
 599         return dec == InsetLayout::DEFAULT ? InsetLayout::CLASSIC : dec;
 600 }
 601
 602
 603 string InsetCollapsable::contextMenu(BufferView const & bv, int x,
 604         int y) const
 605 {
 606         string context_menu = contextMenuName();
 607         string const it_context_menu = InsetText::contextMenuName();
 608         if (decoration() == InsetLayout::CONGLOMERATE)
 609                 return context_menu + ";" + it_context_menu;
 610
 611         string const ic_context_menu = InsetCollapsable::contextMenuName();
 612         if (ic_context_menu != context_menu)
 613                 context_menu += ";" + ic_context_menu;
 614
 615         if (geometry(bv) == NoButton)
 616                 return context_menu + ";" + it_context_menu;
 617
 618         Dimension dim = dimensionCollapsed(bv);
 619         if (x < xo(bv) + dim.wid && y < yo(bv) + dim.des)
 620                 return context_menu;
 621
 622         return it_context_menu;
 623 }
 624
 625
 626 string InsetCollapsable::contextMenuName() const
 627 {
 628         if (decoration() == InsetLayout::CONGLOMERATE)
 629                 return "context-conglomerate";
 630         else
 631                 return "context-collapsable";
 632 }
 633
 634
 635 bool InsetCollapsable::canPaintChange(BufferView const & bv) const
 636 {
 637         // return false to let RowPainter draw the change tracking cue consistently
 638         // with the surrounding text, when the inset is inline: for buttons, for
 639         // non-allowMultiPar insets.
 640         switch (geometry(bv)) {
 641         case Corners:
 642         case SubLabel:
 643                 return allowMultiPar();
 644         case ButtonOnly:
 645                 return false;
 646         default:
 647                 break;
 648         }
 649         return true;
 650 }
 651
 652
 653 } // namespace lyx