src/insets/insetcollapsable.C

   1 /**
   2  * \file insetcollapsable.C
   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 "debug.h"
  21 #include "dispatchresult.h"
  22 #include "FuncStatus.h"
  23 #include "LColor.h"
  24 #include "lyxlex.h"
  25 #include "funcrequest.h"
  26 #include "metricsinfo.h"
  27 #include "paragraph.h"
  28
  29 #include "frontends/font_metrics.h"
  30 #include "frontends/Painter.h"
  31 #include "frontends/LyXView.h"
  32
  33
  34 using lyx::graphics::PreviewLoader;
  35
  36 using std::endl;
  37 using std::string;
  38 using std::max;
  39 using std::min;
  40 using std::ostream;
  41
  42
  43 void leaveInset(LCursor & cur, InsetBase const & in)
  44 {
  45         for (size_t i = 0; i != cur.depth(); ++i) {
  46                 if (&cur[i].inset() == &in) {
  47                         cur.resize(i);
  48                         return;
  49                 }
  50         }
  51 }
  52
  53
  54 InsetCollapsable::InsetCollapsable
  55                 (BufferParams const & bp, CollapseStatus status)
  56         : InsetText(bp), label("Label"), status_(status), openinlined_(false)
  57 {
  58         setAutoBreakRows(true);
  59         setDrawFrame(true);
  60         setFrameColor(LColor::collapsableframe);
  61         setInsetName("Collapsable");
  62         setButtonLabel();
  63 }
  64
  65
  66 void InsetCollapsable::write(Buffer const & buf, ostream & os) const
  67 {
  68         os << "status ";
  69         switch (status_) {
  70         case Open:
  71                 os << "open";
  72                 break;
  73         case Collapsed:
  74                 os << "collapsed";
  75                 break;
  76         case Inlined:
  77                 os << "inlined";
  78                 break;
  79         }
  80         os << "\n";
  81         text_.write(buf, os);
  82 }
  83
  84
  85 void InsetCollapsable::read(Buffer const & buf, LyXLex & lex)
  86 {
  87         bool token_found = false;
  88         if (lex.isOK()) {
  89                 lex.next();
  90                 string const token = lex.getString();
  91                 if (token == "status") {
  92                         lex.next();
  93                         string const tmp_token = lex.getString();
  94
  95                         if (tmp_token == "inlined") {
  96                                 status_ = Inlined;
  97                                 token_found = true;
  98                         } else if (tmp_token == "collapsed") {
  99                                 status_ = Collapsed;
 100                                 token_found = true;
 101                         } else if (tmp_token == "open") {
 102                                 status_ = Open;
 103                                 token_found = true;
 104                         } else {
 105                                 lyxerr << "InsetCollapsable::read: Missing status!"
 106                                        << endl;
 107                                 // Take countermeasures
 108                                 lex.pushToken(token);
 109                         }
 110                 } else {
 111                         lyxerr << "InsetCollapsable::read: Missing 'status'-tag!"
 112                                    << endl;
 113                         // take countermeasures
 114                         lex.pushToken(token);
 115                 }
 116         }
 117         InsetText::read(buf, lex);
 118
 119         if (!token_found)
 120                 status_ = isOpen() ? Open : Collapsed;
 121
 122         setButtonLabel();
 123 }
 124
 125
 126 Dimension InsetCollapsable::dimensionCollapsed() const
 127 {
 128         Dimension dim;
 129         font_metrics::buttonText(label, labelfont_, dim.wid, dim.asc, dim.des);
 130         return dim;
 131 }
 132
 133
 134 void InsetCollapsable::metrics(MetricsInfo & mi, Dimension & dim) const
 135 {
 136         mi.base.textwidth -= 2 * TEXT_TO_INSET_OFFSET;
 137         if (status_ == Inlined) {
 138                 InsetText::metrics(mi, dim);
 139         } else {
 140                 dim = dimensionCollapsed();
 141                 if (status_ == Open) {
 142                         InsetText::metrics(mi, textdim_);
 143                         openinlined_ = (textdim_.wid + dim.wid <= mi.base.textwidth);
 144                         if (openinlined_) {
 145                                 dim.wid += textdim_.wid;
 146                                 dim.des = max(dim.des - textdim_.asc + dim.asc, textdim_.des);
 147                                 dim.asc = textdim_.asc;
 148                         } else {
 149                                 dim.des += textdim_.height() + TEXT_TO_BOTTOM_OFFSET;
 150                                 dim.wid = max(dim.wid, textdim_.wid);
 151                         }
 152                 }
 153         }
 154         dim.asc += TEXT_TO_INSET_OFFSET;
 155         dim.des += TEXT_TO_INSET_OFFSET;
 156         dim.wid += 2 * TEXT_TO_INSET_OFFSET;
 157         mi.base.textwidth += 2 * TEXT_TO_INSET_OFFSET;
 158         dim_ = dim;
 159 }
 160
 161
 162 void InsetCollapsable::draw(PainterInfo & pi, int x, int y) const
 163 {
 164         const int xx = x + TEXT_TO_INSET_OFFSET;
 165         if (status_ == Inlined) {
 166                 InsetText::draw(pi, xx, y);
 167         } else {
 168                 Dimension dimc = dimensionCollapsed();
 169                 int const top  = y - ascent() + TEXT_TO_INSET_OFFSET;
 170                 button_dim.x1 = xx + 0;
 171                 button_dim.x2 = xx + dimc.width();
 172                 button_dim.y1 = top;
 173                 button_dim.y2 = top + dimc.height();
 174
 175                 pi.pain.buttonText(xx, top + dimc.asc, label, labelfont_);
 176                 if (status_ == Open) {
 177                         int textx, texty;
 178                         if (openinlined_) {
 179                                 textx = xx + dimc.width();
 180                                 texty = top + textdim_.asc;
 181                         } else {
 182                                 textx = xx;
 183                                 texty = top + dimc.height() + textdim_.asc;
 184                         }
 185                         InsetText::draw(pi, textx, texty);
 186                 }
 187         }
 188         setPosCache(pi, x, y);
 189 }
 190
 191
 192 void InsetCollapsable::drawSelection(PainterInfo & pi, int x, int y) const
 193 {
 194         x += TEXT_TO_INSET_OFFSET;
 195         if (status_ == Open) {
 196                 if (openinlined_)
 197                         x += dimensionCollapsed().wid;
 198                 else
 199                         y += dimensionCollapsed().des + textdim_.asc;
 200         }
 201         if (status_ != Collapsed)
 202                 InsetText::drawSelection(pi, x, y);
 203 }
 204
 205
 206 void InsetCollapsable::getCursorPos
 207         (CursorSlice const & sl, int & x, int & y) const
 208 {
 209         if (status_ == Collapsed) {
 210                 x = xo();
 211                 y = yo();
 212                 return;
 213         }
 214
 215         InsetText::getCursorPos(sl, x, y);
 216         if (status_ == Open) {
 217                 if (openinlined_)
 218                         x += dimensionCollapsed().wid;
 219                 else
 220                         y += dimensionCollapsed().height() - ascent() + TEXT_TO_INSET_OFFSET + textdim_.asc;
 221         }
 222
 223         x += TEXT_TO_INSET_OFFSET;
 224 }
 225
 226
 227 InsetBase::EDITABLE InsetCollapsable::editable() const
 228 {
 229         return status_ != Collapsed ? HIGHLY_EDITABLE : IS_EDITABLE;
 230 }
 231
 232
 233 bool InsetCollapsable::descendable() const
 234 {
 235         return status_ != Collapsed;
 236 }
 237
 238
 239 bool InsetCollapsable::hitButton(FuncRequest const & cmd) const
 240 {
 241         return button_dim.contains(cmd.x, cmd.y);
 242 }
 243
 244
 245 string const InsetCollapsable::getNewLabel(string const & l) const
 246 {
 247         string label;
 248         pos_type const max_length = 15;
 249         pos_type const p_siz = paragraphs().begin()->size();
 250         pos_type const n = min(max_length, p_siz);
 251         pos_type i = 0;
 252         pos_type j = 0;
 253         for( ; i < n && j < p_siz; ++j) {
 254                 if (paragraphs().begin()->isInset(j))
 255                         continue;
 256                 label += paragraphs().begin()->getChar(j);
 257                 ++i;
 258         }
 259         if (paragraphs().size() > 1 || (i > 0 && j < p_siz)) {
 260                 label += "...";
 261         }
 262         return label.empty() ? l : label;
 263 }
 264
 265
 266 void InsetCollapsable::edit(LCursor & cur, bool left)
 267 {
 268         //lyxerr << "InsetCollapsable: edit left/right" << endl;
 269         cur.push(*this);
 270         InsetText::edit(cur, left);
 271         open();
 272 }
 273
 274
 275 InsetBase * InsetCollapsable::editXY(LCursor & cur, int x, int y) const
 276 {
 277         //lyxerr << "InsetCollapsable: edit xy" << endl;
 278         if (status_ == Collapsed) {
 279                 return const_cast<InsetCollapsable*>(this);
 280         }
 281         cur.push(const_cast<InsetCollapsable&>(*this));
 282         return InsetText::editXY(cur, x, y);
 283 }
 284
 285
 286 void InsetCollapsable::doDispatch(LCursor & cur, FuncRequest & cmd)
 287 {
 288         lyxerr << "InsetCollapsable::doDispatch (begin): cmd: " << cmd
 289                 << " cur: " << cur << " bvcur: " << cur.bv().cursor() << endl;
 290
 291         switch (cmd.action) {
 292         case LFUN_MOUSE_PRESS:
 293                 if (status_ == Inlined)
 294                         InsetText::doDispatch(cur, cmd);
 295                 else if (status_ == Open && !hitButton(cmd))
 296                         InsetText::doDispatch(cur, cmd);
 297                 else
 298                         cur.noUpdate();
 299                 break;
 300
 301         case LFUN_MOUSE_MOTION:
 302                 if (status_ == Inlined)
 303                         InsetText::doDispatch(cur, cmd);
 304                 else if (status_ == Open && !hitButton(cmd))
 305                         InsetText::doDispatch(cur, cmd);
 306                 else
 307                         cur.undispatched();
 308                 break;
 309
 310         case LFUN_MOUSE_RELEASE:
 311                 if (cmd.button() == mouse_button::button3) {
 312                         showInsetDialog(&cur.bv());
 313                         break;
 314                 }
 315
 316                 switch (status_) {
 317
 318                 case Collapsed:
 319                         lyxerr << "InsetCollapsable::lfunMouseRelease 1" << endl;
 320                         edit(cur, true);
 321                         cur.bv().cursor() = cur;
 322                         break;
 323
 324                 case Open: {
 325                         if (hitButton(cmd)) {
 326                                 lyxerr << "InsetCollapsable::lfunMouseRelease 2" << endl;
 327                                 setStatus(Collapsed);
 328                                 leaveInset(cur, *this);
 329                                 cur.bv().cursor() = cur;
 330                         } else {
 331                                 lyxerr << "InsetCollapsable::lfunMouseRelease 3" << endl;
 332                                 InsetText::doDispatch(cur, cmd);
 333                         }
 334                         break;
 335                 }
 336
 337                 case Inlined:
 338                         lyxerr << "InsetCollapsable::lfunMouseRelease 4" << endl;
 339                         InsetText::doDispatch(cur, cmd);
 340                         break;
 341                 }
 342                 break;
 343
 344         case LFUN_INSET_TOGGLE:
 345                 if (cmd.argument == "open")
 346                         setStatus(Open);
 347                 else if (cmd.argument == "close") {
 348                         setStatus(Collapsed);
 349                         leaveInset(cur, *this);
 350                 } else if (cmd.argument == "toggle"
 351                            || cmd.argument.empty()) {
 352                         if (isOpen()) {
 353                                 setStatus(Collapsed);
 354                                 leaveInset(cur, *this);
 355                         } else
 356                                 setStatus(Open);
 357                 } else // if assign or anything else
 358                         cur.undispatched();
 359                 cur.dispatched();
 360                 break;
 361
 362         default:
 363                 InsetText::doDispatch(cur, cmd);
 364                 break;
 365         }
 366 }
 367
 368
 369 bool InsetCollapsable::getStatus(LCursor & cur, FuncRequest const & cmd,
 370                 FuncStatus & flag) const
 371 {
 372         switch (cmd.action) {
 373
 374         case LFUN_INSET_TOGGLE:
 375                 if (cmd.argument == "open" || cmd.argument == "close" ||
 376                     cmd.argument == "toggle")
 377                         flag.enabled(true);
 378                 else
 379                         flag.enabled(false);
 380                 return true;
 381
 382         default:
 383                 return InsetText::getStatus(cur, cmd, flag);
 384         }
 385 }
 386
 387
 388 int InsetCollapsable::scroll(bool recursive) const
 389 {
 390         int sx = UpdatableInset::scroll(false);
 391
 392         if (recursive)
 393                 sx += InsetText::scroll(false);
 394
 395         return sx;
 396 }
 397
 398
 399 void InsetCollapsable::open()
 400 {
 401         if (status_ == Collapsed)   // ...but not inlined
 402                 setStatus(Open);
 403 }
 404
 405
 406 void InsetCollapsable::close()
 407 {
 408         setStatus(Collapsed);
 409 }
 410
 411
 412 void InsetCollapsable::setLabel(string const & l)
 413 {
 414         label = l;
 415 }
 416
 417
 418 void InsetCollapsable::setStatus(CollapseStatus status)
 419 {
 420         status_ = status;
 421         setButtonLabel();
 422 }
 423
 424
 425 void InsetCollapsable::setLabelFont(LyXFont & font)
 426 {
 427         labelfont_ = font;
 428 }
 429
 430
 431 void InsetCollapsable::scroll(BufferView & bv, double sx) const
 432 {
 433         UpdatableInset::scroll(bv, sx);
 434 }
 435
 436
 437 void InsetCollapsable::scroll(BufferView & bv, int offset) const
 438 {
 439         UpdatableInset::scroll(bv, offset);
 440 }