src/frontends/xforms/FormGraphics.C

   1 /**
   2  * \file FormGraphics.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Baruch Even
   7  * \author Herbert Voss
   8  * \author Rob Lahaye
   9  *
  10  * Full author contact details are available in file CREDITS
  11  */
  12
  13 #include <config.h>
  14
  15 #include "xformsBC.h"
  16 #include "ControlGraphics.h"
  17 #include "FormGraphics.h"
  18 #include "forms/form_graphics.h"
  19
  20 #include "checkedwidgets.h"
  21 #include "input_validators.h"
  22 #include "Tooltips.h"
  23 #include "xforms_helpers.h"
  24
  25 #include "debug.h" // for lyxerr
  26 #include "lyxrc.h" // for lyxrc.display_graphics
  27
  28 #include "insets/insetgraphicsParams.h"
  29
  30 #include "controllers/helper_funcs.h" // for getStringFromVector
  31
  32 #include "frontends/Alert.h"
  33
  34 #include "support/tostr.h"
  35 #include "support/lstrings.h"  // for strToDbl
  36 #include "support/lyxlib.h"  // for float_equal
  37 #include "support/filetools.h"  // for MakeAbsPath etc
  38
  39 #include "support/BoostFormat.h"
  40
  41 #include "lyx_forms.h"
  42
  43 using namespace lyx::support;
  44
  45 using std::endl;
  46 using std::vector;
  47
  48
  49 namespace {
  50
  51 // Bound the number of input characters
  52 int const SIZE_MAXDIGITS = 10;
  53 int const FILENAME_MAXCHARS = 1024;
  54
  55 string defaultUnit("cm");
  56
  57 #if FL_VERSION == 0 || (FL_REVISION == 0 && FL_FIXLEVEL < 2)
  58 bool const scalableTabfolders = false;
  59 #else
  60 bool const scalableTabfolders = true;
  61 #endif
  62
  63 } // namespace anon
  64
  65
  66 typedef FormController<ControlGraphics, FormView<FD_graphics> > base_class;
  67
  68 FormGraphics::FormGraphics(Dialog & parent)
  69         : base_class(parent, _("Graphics"), scalableTabfolders)
  70 {}
  71
  72
  73 void FormGraphics::redraw()
  74 {
  75         if (form() && form()->visible)
  76                 fl_redraw_form(form());
  77         else
  78                 return;
  79         FL_FORM * outer_form = fl_get_active_folder(dialog_->tabfolder);
  80         if (outer_form && outer_form->visible)
  81                 fl_redraw_form(outer_form);
  82 }
  83
  84
  85 void FormGraphics::build()
  86 {
  87         dialog_.reset(build_graphics(this));
  88
  89         // Manage the ok, apply, restore and cancel/close buttons
  90         bcview().setOK(dialog_->button_ok);
  91         bcview().setApply(dialog_->button_apply);
  92         bcview().setCancel(dialog_->button_close);
  93         bcview().setRestore(dialog_->button_restore);
  94
  95         // The file section.
  96         file_.reset(build_graphics_file(this));
  97
  98         // Disable for read-only documents.
  99         bcview().addReadOnly(file_->button_browse);
 100         bcview().addReadOnly(file_->check_aspectratio);
 101         bcview().addReadOnly(file_->check_draft);
 102         bcview().addReadOnly(file_->check_nounzip);
 103
 104         // Check validity of "length + unit" input.
 105         addCheckedGlueLength(bcview(), file_->input_width);
 106         addCheckedGlueLength(bcview(), file_->input_height);
 107
 108         // Trigger an input event for cut&paste with middle mouse button.
 109         setPrehandler(file_->input_filename);
 110         setPrehandler(file_->input_lyxscale);
 111         setPrehandler(file_->input_width);
 112         setPrehandler(file_->input_height);
 113
 114         // Activate ok/apply immediately upon input.
 115         fl_set_input_return(file_->input_filename, FL_RETURN_CHANGED);
 116         fl_set_input_return(file_->input_lyxscale, FL_RETURN_CHANGED);
 117         fl_set_input_return(file_->input_width, FL_RETURN_CHANGED);
 118         fl_set_input_return(file_->input_height, FL_RETURN_CHANGED);
 119
 120         fl_set_input_maxchars(file_->input_filename, FILENAME_MAXCHARS);
 121         fl_set_input_filter(file_->input_lyxscale, fl_unsigned_int_filter);
 122
 123         // Width default is scaling: use unsigned float filter.
 124         fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 125         fl_set_input_maxchars(file_->input_height, SIZE_MAXDIGITS);
 126
 127         string const display_List =
 128                 _("Default|Monochrome|Grayscale|Color|Do not display");
 129         fl_addto_choice(file_->choice_display, display_List.c_str());
 130
 131         string const width_list = bformat(_("Scale%%%%|%1$s"), choice_Length_All);
 132         fl_addto_choice(file_->choice_width, width_list.c_str());
 133
 134         fl_addto_choice(file_->choice_height, choice_Length_All.c_str());
 135
 136         // set up the tooltips for the filesection
 137         string str = _("The file you want to insert.");
 138         tooltips().init(file_->input_filename, str);
 139         str = _("Browse the directories.");
 140         tooltips().init(file_->button_browse, str);
 141
 142         str = _("Scale the image to inserted percentage value.");
 143         tooltips().init(file_->input_lyxscale, str);
 144         str = _("Select display mode for this image.");
 145         tooltips().init(file_->choice_display, str);
 146
 147         str = _("Set the image width to the inserted value.");
 148         tooltips().init(file_->input_width, str);
 149         // xgettext:no-c-format
 150         str = _("Select unit for width; Scale% for scaling whole image.");
 151         tooltips().init(file_->choice_width, str);
 152         str = _("Set the image height to the inserted value.");
 153         tooltips().init(file_->input_height, str);
 154         str = _("Select unit for height.");
 155         tooltips().init(file_->choice_height, str);
 156         str = _("Do not distort the image. "
 157                 "Keep image within \"width\" by \"height\" and obey "
 158                 "aspect ratio.");
 159         tooltips().init(file_->check_aspectratio, str);
 160         str = _("Pass a filename like \"file.eps.gz\" to the LaTeX output. "
 161                 "Useful when LaTeX should unzip the file. Needs an additional "
 162                 "file like \"file.eps.bb\" which holds the values for "
 163                 "the bounding box.");
 164         tooltips().init(file_->check_nounzip, str);
 165         str = _("Show image only as a rectangle of the original size.");
 166         tooltips().init(file_->check_draft, str);
 167
 168         // the bounding box selection
 169         bbox_.reset(build_graphics_bbox(this));
 170
 171         // disable for read-only documents
 172         bcview().addReadOnly(bbox_->button_getBB);
 173         bcview().addReadOnly(bbox_->check_clip);
 174
 175         // check validity of "length + unit" input
 176         addCheckedLyXLength(bcview(), bbox_->input_bb_x1, bbox_->text_X);
 177
 178         // trigger an input event for cut&paste with middle mouse button.
 179         setPrehandler(bbox_->input_bb_x0);
 180         setPrehandler(bbox_->input_bb_y0);
 181         setPrehandler(bbox_->input_bb_x1);
 182         setPrehandler(bbox_->input_bb_y1);
 183
 184         // for activate ok/apply immediately upon input
 185         fl_set_input_return(bbox_->input_bb_x0, FL_RETURN_CHANGED);
 186         fl_set_input_return(bbox_->input_bb_y0, FL_RETURN_CHANGED);
 187         fl_set_input_return(bbox_->input_bb_x1, FL_RETURN_CHANGED);
 188         fl_set_input_return(bbox_->input_bb_y1, FL_RETURN_CHANGED);
 189
 190         fl_set_input_filter(bbox_->input_bb_x0, fl_unsigned_float_filter);
 191         fl_set_input_filter(bbox_->input_bb_y0, fl_unsigned_float_filter);
 192         fl_set_input_filter(bbox_->input_bb_y1, fl_unsigned_float_filter);
 193
 194         string const bb_units = getStringFromVector(frnt::getBBUnits(), "|");
 195         fl_addto_choice(bbox_->choice_bb_units, bb_units.c_str());
 196
 197         // set up the tooltips for the bounding-box-section
 198         str = _("The lower left x-value of the bounding box.");
 199         tooltips().init(bbox_->input_bb_x0, str);
 200         str = _("The lower left y-value of the bounding box.");
 201         tooltips().init(bbox_->input_bb_y0, str);
 202         str = _("The upper right x-value of the bounding box; "
 203                 "only this input field allows length + unit, e.g. 5cm "
 204                 "and sets the unit for the other input fields.");
 205         tooltips().init(bbox_->input_bb_x1, str);
 206         str = _("The upper right y-value of the bounding box.");
 207         tooltips().init(bbox_->input_bb_y1, str);
 208         str = _("Select unit for the bounding box values.");
 209         tooltips().init(bbox_->choice_bb_units, str);
 210
 211         str = _("Read the image coordinates new from file. For (e)ps-file "
 212                 "the bounding box is read, otherwise the imagesize in pixels. "
 213                 "Default unit is \"bp\", the PostScript's b(ig) p(oint).");
 214         tooltips().init(bbox_->button_getBB, str);
 215
 216         str = _("Clip image to the bounding box values.");
 217         tooltips().init(bbox_->check_clip, str);
 218
 219         // the extra section
 220         extra_.reset(build_graphics_extra(this));
 221
 222         // disable for read-only documents
 223         bcview().addReadOnly(extra_->input_rotate_angle);
 224         bcview().addReadOnly(extra_->choice_origin);
 225         bcview().addReadOnly(extra_->check_subcaption);
 226         bcview().addReadOnly(extra_->input_special);
 227
 228         // trigger an input event for cut&paste with middle mouse button.
 229         setPrehandler(extra_->input_rotate_angle);
 230         setPrehandler(extra_->input_subcaption);
 231         setPrehandler(extra_->input_special);
 232
 233         fl_set_input_return(extra_->input_rotate_angle, FL_RETURN_CHANGED);
 234         fl_set_input_return(extra_->input_subcaption, FL_RETURN_CHANGED);
 235         fl_set_input_return(extra_->input_special, FL_RETURN_CHANGED);
 236
 237         fl_set_input_filter(extra_->input_rotate_angle, fl_float_filter);
 238
 239         using namespace frnt;
 240         vector<RotationOriginPair> origindata = getRotationOriginData();
 241
 242         // Store the identifiers for later
 243         origins_ = getSecond(origindata);
 244
 245         string const choice = getStringFromVector(getFirst(origindata), "|");
 246         fl_addto_choice(extra_->choice_origin, choice.c_str());
 247
 248         // set up the tooltips for the extra section
 249         str = _("Insert the rotation angle in degrees. "
 250                 "Positive value rotates anti-clockwise, "
 251                 "negative value clockwise.");
 252         tooltips().init(extra_->input_rotate_angle, str);
 253         str = _("Insert the point of origin for rotation.");
 254         tooltips().init(extra_->choice_origin, str);
 255         str = _("Enables use of subfigure with its own caption.");
 256         tooltips().init(extra_->check_subcaption, str);
 257         str = _("Insert the optional subfigure caption.");
 258         tooltips().init(extra_->input_subcaption, str);
 259         str = _("Add any additional LaTeX option, which is defined in the "
 260                 "graphicx-package and not mentioned in the gui's tabfolders.");
 261         tooltips().init(extra_->input_special, str);
 262
 263         // Enable the tabfolder to be rescaled correctly.
 264         if (scalableTabfolders)
 265                 fl_set_tabfolder_autofit(dialog_->tabfolder, FL_FIT);
 266
 267         // Stack tabs
 268         fl_addto_tabfolder(dialog_->tabfolder, _("File").c_str(),
 269                            file_->form);
 270         fl_addto_tabfolder(dialog_->tabfolder, _("Bounding Box").c_str(),
 271                            bbox_->form);
 272         fl_addto_tabfolder(dialog_->tabfolder, _("Extra").c_str(),
 273                            extra_->form);
 274
 275         // set the right default unit
 276         switch (lyxrc.default_papersize) {
 277         case PAPER_DEFAULT: break;
 278         case PAPER_USLETTER:
 279         case PAPER_LEGALPAPER:
 280         case PAPER_EXECUTIVEPAPER: defaultUnit = "in"; break;
 281         case PAPER_A3PAPER:
 282         case PAPER_A4PAPER:
 283         case PAPER_A5PAPER:
 284         case PAPER_B5PAPER: defaultUnit = "cm"; break;
 285         }
 286 }
 287
 288
 289 void FormGraphics::apply()
 290 {
 291         // Create the parameters structure and fill the data from the dialog.
 292         InsetGraphicsParams & igp = controller().params();
 293
 294         // the file section
 295         igp.filename.set(getString(file_->input_filename),
 296                          kernel().bufferFilepath());
 297
 298         igp.lyxscale = strToInt(getString(file_->input_lyxscale));
 299         if (igp.lyxscale == 0) {
 300                 igp.lyxscale = 100;
 301         }
 302
 303         switch (fl_get_choice(file_->choice_display)) {
 304         case 5:
 305                 igp.display = lyx::graphics::NoDisplay;
 306                 break;
 307         case 4:
 308                 igp.display = lyx::graphics::ColorDisplay;
 309                 break;
 310         case 3:
 311                 igp.display = lyx::graphics::GrayscaleDisplay;
 312                 break;
 313         case 2:
 314                 igp.display = lyx::graphics::MonochromeDisplay;
 315                 break;
 316         case 1:
 317                 igp.display = lyx::graphics::DefaultDisplay;
 318         }
 319
 320         // first item in choice_width means scaling
 321         if (fl_get_choice(file_->choice_width) == 1) {
 322                 igp.scale = strToDbl(getString(file_->input_width));
 323                 if (float_equal(igp.scale, 0.0, 0.05)) {
 324                         igp.scale = 100.0;
 325                 }
 326                 igp.width = LyXLength();
 327         } else {
 328                 igp.scale = 0.0;
 329                 igp.width = LyXLength(getLengthFromWidgets(file_->input_width,
 330                                                            file_->choice_width));
 331         }
 332         igp.height = LyXLength(getLengthFromWidgets(file_->input_height,
 333                                                     file_->choice_height));
 334         igp.keepAspectRatio = fl_get_button(file_->check_aspectratio);
 335
 336         igp.draft = fl_get_button(file_->check_draft);
 337         igp.noUnzip = fl_get_button(file_->check_nounzip);
 338
 339         // the bb section
 340         if (!controller().bbChanged) {
 341                 // don't write anything
 342                 igp.bb.erase();
 343         } else {
 344                 // allow length + unit input only for x1 input field
 345                 string x1_str = "0";
 346                 if (!getString(bbox_->input_bb_x1).empty()) {
 347                         x1_str = getLengthFromWidgets(bbox_->input_bb_x1,
 348                                                       bbox_->choice_bb_units);
 349                         LyXLength x1 = LyXLength(x1_str);
 350                         x1_str = x1.asString();
 351
 352                         string unit;
 353                         switch (x1.unit()) {
 354                         case LyXLength::IN:
 355                                 unit = "in";
 356                                 break;
 357                         case LyXLength::MM:
 358                                 unit = "mm";
 359                                 break;
 360                         case LyXLength::CM:
 361                                 unit = "cm";
 362                                 break;
 363                         case LyXLength::BP:
 364                         default:
 365                                 unit = "bp";
 366                         }
 367                         fl_set_choice_text(bbox_->choice_bb_units, unit.c_str());
 368                 }
 369
 370                 string bb;
 371                 if (getString(bbox_->input_bb_x0).empty())
 372                         bb = "0";
 373                 else
 374                         bb = getLengthFromWidgets(bbox_->input_bb_x0,
 375                                                   bbox_->choice_bb_units);
 376
 377                 bb += ' ';
 378
 379                 if (getString(bbox_->input_bb_y0).empty())
 380                         bb += '0';
 381                 else
 382                         bb += getLengthFromWidgets(bbox_->input_bb_y0,
 383                                                   bbox_->choice_bb_units);
 384
 385                 bb += ' ' + x1_str + ' ';
 386
 387                 if (getString(bbox_->input_bb_y1).empty())
 388                         bb += '0';
 389                 else
 390                         bb += getLengthFromWidgets(bbox_->input_bb_y1,
 391                                                    bbox_->choice_bb_units);
 392
 393                 igp.bb = bb;
 394         }
 395         igp.clip = fl_get_button(bbox_->check_clip);
 396
 397         // the extra section
 398         igp.rotateAngle = strToDbl(getString(extra_->input_rotate_angle));
 399
 400         // map angle into -360 (clock-wise) to +360 (counter clock-wise)
 401         while (igp.rotateAngle <= -360.0) {
 402                 igp.rotateAngle += 360.0;
 403         }
 404         while (igp.rotateAngle >=  360.0) {
 405                 igp.rotateAngle -= 360.0;
 406         }
 407         fl_set_input(extra_->input_rotate_angle, tostr(igp.rotateAngle).c_str());
 408
 409         int const origin_pos = fl_get_choice(extra_->choice_origin);
 410         if (origin_pos == 0) {
 411                 igp.rotateOrigin.erase();
 412         } else {
 413                 igp.rotateOrigin = origins_[origin_pos - 1];
 414         }
 415
 416         igp.subcaption = fl_get_button(extra_->check_subcaption);
 417         igp.subcaptionText = getString(extra_->input_subcaption);
 418
 419         igp.special = getString(extra_->input_special);
 420 }
 421
 422
 423 void FormGraphics::update() {
 424         // Update dialog with details from inset
 425         InsetGraphicsParams & igp = controller().params();
 426
 427         // the file section
 428         string const name =
 429                 igp.filename.outputFilename(kernel().bufferFilepath());
 430         fl_set_input(file_->input_filename, name.c_str());
 431         fl_set_input(file_->input_lyxscale, tostr(igp.lyxscale).c_str());
 432
 433         switch (igp.display) {
 434         case lyx::graphics::NoDisplay:
 435                 fl_set_choice(file_->choice_display, 5);
 436                 break;
 437         case lyx::graphics::ColorDisplay:
 438                 fl_set_choice(file_->choice_display, 4);
 439                 break;
 440         case lyx::graphics::GrayscaleDisplay:
 441                 fl_set_choice(file_->choice_display, 3);
 442                 break;
 443         case lyx::graphics::MonochromeDisplay:
 444                 fl_set_choice(file_->choice_display, 2);
 445                 break;
 446         case lyx::graphics::DefaultDisplay:
 447                 fl_set_choice(file_->choice_display, 1);
 448         }
 449
 450         // set width input fields according to scaling or width/height input
 451         if (!float_equal(igp.scale, 0.0, 0.05)) {
 452                 fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 453                 fl_set_input_maxchars(file_->input_width, 0);
 454                 fl_set_input(file_->input_width, tostr(igp.scale).c_str());
 455                 fl_set_choice(file_->choice_width, 1);
 456         } else {
 457                 fl_set_input_filter(file_->input_width, NULL);
 458                 fl_set_input_maxchars(file_->input_width, SIZE_MAXDIGITS);
 459                 updateWidgetsFromLength(file_->input_width, file_->choice_width,
 460                                         igp.width, defaultUnit);
 461         }
 462
 463         updateWidgetsFromLength(file_->input_height, file_->choice_height,
 464                                 igp.height, defaultUnit);
 465
 466         // disable height input in case of scaling
 467         bool const disable_height = !float_equal(igp.scale, 0.0, 0.05);
 468         setEnabled(file_->input_height, !disable_height);
 469         setEnabled(file_->choice_height, !disable_height);
 470
 471         fl_set_button(file_->check_aspectratio, igp.keepAspectRatio);
 472         fl_set_button(file_->check_draft, igp.draft);
 473         fl_set_button(file_->check_nounzip, igp.noUnzip);
 474
 475         // disable aspectratio button in case of scaling or one of width/height
 476         // is empty
 477         bool const disable_aspectRatio = disable_height ||
 478                                 getString(file_->input_width).empty() ||
 479                                 getString(file_->input_height).empty();
 480         setEnabled(file_->check_aspectratio, !disable_aspectRatio);
 481
 482         // the bb section
 483         // set the bounding box values, if exists. First we need the whole
 484         // path, because the controller knows nothing about the doc-dir
 485         updateBB(igp.filename.absFilename(), igp.bb);
 486         fl_set_button(bbox_->check_clip, igp.clip);
 487
 488         // the extra section
 489         fl_set_input(extra_->input_rotate_angle,
 490                      tostr(igp.rotateAngle).c_str());
 491
 492         int origin_pos;
 493         if (igp.rotateOrigin.empty()) {
 494                 origin_pos = 1;
 495         } else {
 496                 origin_pos = 1 + findPos(origins_, igp.rotateOrigin);
 497         }
 498         fl_set_choice(extra_->choice_origin, origin_pos);
 499
 500         fl_set_button(extra_->check_subcaption, igp.subcaption);
 501         fl_set_input(extra_->input_subcaption, igp.subcaptionText.c_str());
 502         setEnabled(extra_->input_subcaption,
 503                    fl_get_button(extra_->check_subcaption));
 504         fl_set_input(extra_->input_special, igp.special.c_str());
 505
 506         // open dialog in the file-tab, whenever filename is empty
 507         if (igp.filename.empty()) {
 508                 fl_set_folder(dialog_->tabfolder, file_->form);
 509         }
 510 }
 511
 512
 513 void FormGraphics::updateBB(string const & filename, string const & bb_inset)
 514 {
 515         // Update dialog with details from inset
 516         // set the bounding box values, if exists. First we need the whole
 517         // path, because the controller knows nothing about the doc-dir
 518         controller().bbChanged = false;
 519         if (bb_inset.empty()) {
 520                 lyxerr[Debug::GRAPHICS]
 521                         << "FormGraphics::updateBB() [no BoundingBox]" << endl;
 522                 string const bb = controller().readBB(filename);
 523                 if (!bb.empty()) {
 524                         // get the values from the file
 525                         // in this case we always have the point-unit
 526                         fl_set_input(bbox_->input_bb_x0,
 527                                      token(bb,' ',0).c_str());
 528                         fl_set_input(bbox_->input_bb_y0,
 529                                      token(bb,' ',1).c_str());
 530                         fl_set_input(bbox_->input_bb_x1,
 531                                      token(bb,' ',2).c_str());
 532                         fl_set_input(bbox_->input_bb_y1,
 533                                      token(bb,' ',3).c_str());
 534
 535                 } else {
 536                         // no bb from file
 537                         fl_set_input(bbox_->input_bb_x0, bb.c_str());
 538                         fl_set_input(bbox_->input_bb_y0, bb.c_str());
 539                         fl_set_input(bbox_->input_bb_x1, bb.c_str());
 540                         fl_set_input(bbox_->input_bb_y1, bb.c_str());
 541                 }
 542                 // "bp"
 543                 fl_set_choice(bbox_->choice_bb_units, 1);
 544
 545         } else {
 546                 // get the values from the inset
 547                 lyxerr[Debug::GRAPHICS]
 548                         << "FormGraphics::updateBB(): igp has BoundingBox"
 549                         << " ["<< bb_inset << "]" << endl;
 550                 controller().bbChanged = true;
 551
 552                 LyXLength anyLength;
 553                 anyLength = LyXLength(token(bb_inset,' ',0));
 554                 updateWidgetsFromLength(bbox_->input_bb_x0,
 555                                         bbox_->choice_bb_units,anyLength,"bp");
 556                 anyLength = LyXLength(token(bb_inset,' ',1));
 557                 updateWidgetsFromLength(bbox_->input_bb_y0,
 558                                         bbox_->choice_bb_units,anyLength,"bp");
 559                 anyLength = LyXLength(token(bb_inset,' ',2));
 560                 updateWidgetsFromLength(bbox_->input_bb_x1,
 561                                         bbox_->choice_bb_units,anyLength,"bp");
 562                 anyLength = LyXLength(token(bb_inset,' ',3));
 563                 updateWidgetsFromLength(bbox_->input_bb_y1,
 564                                         bbox_->choice_bb_units,anyLength,"bp");
 565         }
 566 }
 567
 568
 569 ButtonPolicy::SMInput FormGraphics::input(FL_OBJECT * ob, long)
 570 {
 571         // the file section
 572         if (ob == file_->button_browse) {
 573                 // Get the filename from the dialog
 574                 string const in_name = getString(file_->input_filename);
 575                 string const out_name = controller().Browse(in_name);
 576                 lyxerr[Debug::GRAPHICS]
 577                         << "[FormGraphics]out_name: " << out_name << endl;
 578                 if (out_name != in_name && !out_name.empty()) {
 579                         fl_set_input(file_->input_filename, out_name.c_str());
 580                 }
 581                 if (controller().isFilenameValid(out_name) &&
 582                     !controller().bbChanged) {
 583                         updateBB(out_name, string());
 584                 }
 585         } else if (ob == file_->input_width || ob == file_->input_height) {
 586                 // disable aspectratio button in case of scaling or one of
 587                 // width/height is empty
 588                 bool const disable = fl_get_choice(file_->choice_width) == 1 ||
 589                                     getString(file_->input_width).empty() ||
 590                                     getString(file_->input_height).empty();
 591                 setEnabled(file_->check_aspectratio, !disable);
 592         } else if (ob == file_->choice_width) {
 593                 // disable height input in case of scaling
 594                 bool const scaling = fl_get_choice(file_->choice_width) == 1;
 595                 setEnabled(file_->input_height, !scaling);
 596                 setEnabled(file_->choice_height, !scaling);
 597
 598                 // allow only integer intput for scaling; float otherwise
 599                 if (scaling) {
 600                         fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 601                         fl_set_input_maxchars(file_->input_width, 0);
 602                 } else {
 603                         fl_set_input_filter(file_->input_width, NULL);
 604                         fl_set_input_maxchars(file_->input_width, SIZE_MAXDIGITS);
 605                 }
 606
 607                 // disable aspectratio button in case of scaling or height
 608                 // input is empty
 609                 bool const disable_aspectratio =
 610                         scaling || getString(file_->input_height).empty();
 611                 setEnabled(file_->check_aspectratio, !disable_aspectratio);
 612         // the bb section
 613         } else if (!controller().bbChanged &&
 614                    (ob == bbox_->check_clip  || ob == bbox_->choice_bb_units ||
 615                     ob == bbox_->input_bb_x0 || ob == bbox_->input_bb_y0 ||
 616                     ob == bbox_->input_bb_x1 || ob == bbox_->input_bb_y1)) {
 617                 controller().bbChanged = true;
 618         } else if (ob == bbox_->button_getBB) {
 619                 string const filename = getString(file_->input_filename);
 620                 if (!filename.empty()) {
 621                         string bb = controller().readBB(filename);
 622                         if (!bb.empty()) {
 623                                 fl_set_input(bbox_->input_bb_x0, token(bb,' ',0).c_str());
 624                                 fl_set_input(bbox_->input_bb_y0, token(bb,' ',1).c_str());
 625                                 fl_set_input(bbox_->input_bb_x1, token(bb,' ',2).c_str());
 626                                 fl_set_input(bbox_->input_bb_y1, token(bb,' ',3).c_str());
 627                                 fl_set_choice_text(bbox_->choice_bb_units, "bp");
 628                         }
 629                         controller().bbChanged = false;
 630                 } else {
 631                         fl_set_input(bbox_->input_bb_x0, "");
 632                         fl_set_input(bbox_->input_bb_y0, "");
 633                         fl_set_input(bbox_->input_bb_x1, "");
 634                         fl_set_input(bbox_->input_bb_y1, "");
 635                         fl_set_choice_text(bbox_->choice_bb_units, "bp");
 636                 }
 637         // the extra section
 638         } else if (ob == extra_->check_subcaption) {
 639                 setEnabled(extra_->input_subcaption,
 640                            fl_get_button(extra_->check_subcaption));
 641
 642         }
 643
 644         return ButtonPolicy::SMI_VALID;
 645 }