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 "FormGraphics.h"
  16 #include "ControlGraphics.h"
  17 #include "forms/form_graphics.h"
  18
  19 #include "controllers/helper_funcs.h"
  20
  21 #include "checkedwidgets.h"
  22 #include "input_validators.h"
  23 #include "Tooltips.h"
  24 #include "xforms_helpers.h"
  25 #include "xformsBC.h"
  26
  27 #include "lyxrc.h" // for lyxrc.display_graphics
  28
  29 #include "insets/insetgraphicsParams.h"
  30
  31 #include "frontends/Alert.h"
  32
  33 #include "support/lyxlib.h"  // for float_equal
  34 #include "support/tostr.h"
  35
  36 #include "lyx_forms.h"
  37
  38 using lyx::support::bformat;
  39 using lyx::support::float_equal;
  40 using lyx::support::getStringFromVector;
  41 using lyx::support::strToDbl;
  42 using lyx::support::strToInt;
  43 using lyx::support::token;
  44
  45 using std::endl;
  46
  47 using std::vector;
  48 using std::string;
  49
  50
  51 namespace {
  52
  53 // Bound the number of input characters
  54 int const SIZE_MAXDIGITS = 10;
  55 int const FILENAME_MAXCHARS = 1024;
  56
  57 string defaultUnit("cm");
  58
  59 #if FL_VERSION == 0 || (FL_REVISION == 0 && FL_FIXLEVEL < 2)
  60 bool const scalableTabfolders = false;
  61 #else
  62 bool const scalableTabfolders = true;
  63 #endif
  64
  65 } // namespace anon
  66
  67
  68 typedef FormController<ControlGraphics, FormView<FD_graphics> > base_class;
  69
  70 FormGraphics::FormGraphics(Dialog & parent)
  71         : base_class(parent, _("Graphics"), scalableTabfolders)
  72 {}
  73
  74
  75 void FormGraphics::redraw()
  76 {
  77         if (form() && form()->visible)
  78                 fl_redraw_form(form());
  79         else
  80                 return;
  81         FL_FORM * outer_form = fl_get_active_folder(dialog_->tabfolder);
  82         if (outer_form && outer_form->visible)
  83                 fl_redraw_form(outer_form);
  84 }
  85
  86
  87 void FormGraphics::build()
  88 {
  89         dialog_.reset(build_graphics(this));
  90
  91         // Manage the ok, apply, restore and cancel/close buttons
  92         bcview().setOK(dialog_->button_ok);
  93         bcview().setApply(dialog_->button_apply);
  94         bcview().setCancel(dialog_->button_close);
  95         bcview().setRestore(dialog_->button_restore);
  96
  97         // The file section.
  98         file_.reset(build_graphics_file(this));
  99
 100         // Disable for read-only documents.
 101         bcview().addReadOnly(file_->button_browse);
 102         bcview().addReadOnly(file_->check_aspectratio);
 103         bcview().addReadOnly(file_->check_draft);
 104         bcview().addReadOnly(file_->check_nounzip);
 105
 106         // Check validity of "length + unit" input.
 107         addCheckedGlueLength(bcview(), file_->input_width);
 108         addCheckedGlueLength(bcview(), file_->input_height);
 109
 110         // Trigger an input event for cut&paste with middle mouse button.
 111         setPrehandler(file_->input_filename);
 112         setPrehandler(file_->input_lyxscale);
 113         setPrehandler(file_->input_width);
 114         setPrehandler(file_->input_height);
 115
 116         // Activate ok/apply immediately upon input.
 117         fl_set_input_return(file_->input_filename, FL_RETURN_CHANGED);
 118         fl_set_input_return(file_->input_lyxscale, FL_RETURN_CHANGED);
 119         fl_set_input_return(file_->input_width, FL_RETURN_CHANGED);
 120         fl_set_input_return(file_->input_height, FL_RETURN_CHANGED);
 121
 122         fl_set_input_maxchars(file_->input_filename, FILENAME_MAXCHARS);
 123         fl_set_input_filter(file_->input_lyxscale, fl_unsigned_int_filter);
 124
 125         // Width default is scaling: use unsigned float filter.
 126         fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 127         fl_set_input_maxchars(file_->input_height, SIZE_MAXDIGITS);
 128
 129         string const display_List =
 130                 _("Default|Monochrome|Grayscale|Color|Do not display");
 131         fl_addto_choice(file_->choice_display, display_List.c_str());
 132
 133         string const width_list = bformat(_("Scale%%%%|%1$s"), choice_Length_All);
 134         fl_addto_choice(file_->choice_width, width_list.c_str());
 135
 136         fl_addto_choice(file_->choice_height, choice_Length_All.c_str());
 137
 138         // set up the tooltips for the filesection
 139         string str = _("The file you want to insert.");
 140         tooltips().init(file_->input_filename, str);
 141         str = _("Browse the directories.");
 142         tooltips().init(file_->button_browse, str);
 143
 144         str = _("Scale the image to inserted percentage value.");
 145         tooltips().init(file_->input_lyxscale, str);
 146         str = _("Select display mode for this image.");
 147         tooltips().init(file_->choice_display, str);
 148
 149         str = _("Set the image width to the inserted value.");
 150         tooltips().init(file_->input_width, str);
 151         // xgettext:no-c-format
 152         str = _("Select unit for width; Scale% for scaling whole image.");
 153         tooltips().init(file_->choice_width, str);
 154         str = _("Set the image height to the inserted value.");
 155         tooltips().init(file_->input_height, str);
 156         str = _("Select unit for height.");
 157         tooltips().init(file_->choice_height, str);
 158         str = _("Do not distort the image. "
 159                 "Keep image within \"width\" by \"height\" and obey "
 160                 "aspect ratio.");
 161         tooltips().init(file_->check_aspectratio, str);
 162         str = _("Pass a filename like \"file.eps.gz\" to the LaTeX output. "
 163                 "Useful when LaTeX should unzip the file. Needs an additional "
 164                 "file like \"file.eps.bb\" which holds the values for "
 165                 "the bounding box.");
 166         tooltips().init(file_->check_nounzip, str);
 167         str = _("Show image only as a rectangle of the original size.");
 168         tooltips().init(file_->check_draft, str);
 169
 170         // the bounding box selection
 171         bbox_.reset(build_graphics_bbox(this));
 172
 173         // disable for read-only documents
 174         bcview().addReadOnly(bbox_->button_getBB);
 175         bcview().addReadOnly(bbox_->check_clip);
 176
 177         // check validity of "length + unit" input
 178         addCheckedLyXLength(bcview(), bbox_->input_bb_x1, bbox_->text_X);
 179
 180         // trigger an input event for cut&paste with middle mouse button.
 181         setPrehandler(bbox_->input_bb_x0);
 182         setPrehandler(bbox_->input_bb_y0);
 183         setPrehandler(bbox_->input_bb_x1);
 184         setPrehandler(bbox_->input_bb_y1);
 185
 186         // for activate ok/apply immediately upon input
 187         fl_set_input_return(bbox_->input_bb_x0, FL_RETURN_CHANGED);
 188         fl_set_input_return(bbox_->input_bb_y0, FL_RETURN_CHANGED);
 189         fl_set_input_return(bbox_->input_bb_x1, FL_RETURN_CHANGED);
 190         fl_set_input_return(bbox_->input_bb_y1, FL_RETURN_CHANGED);
 191
 192         fl_set_input_filter(bbox_->input_bb_x0, fl_unsigned_float_filter);
 193         fl_set_input_filter(bbox_->input_bb_y0, fl_unsigned_float_filter);
 194         fl_set_input_filter(bbox_->input_bb_y1, fl_unsigned_float_filter);
 195
 196         string const bb_units = getStringFromVector(frnt::getBBUnits(), "|");
 197         fl_addto_choice(bbox_->choice_bb_units, bb_units.c_str());
 198
 199         // set up the tooltips for the bounding-box-section
 200         str = _("The lower left x-value of the bounding box.");
 201         tooltips().init(bbox_->input_bb_x0, str);
 202         str = _("The lower left y-value of the bounding box.");
 203         tooltips().init(bbox_->input_bb_y0, str);
 204         str = _("The upper right x-value of the bounding box; "
 205                 "only this input field allows length + unit, e.g. 5cm "
 206                 "and sets the unit for the other input fields.");
 207         tooltips().init(bbox_->input_bb_x1, str);
 208         str = _("The upper right y-value of the bounding box.");
 209         tooltips().init(bbox_->input_bb_y1, str);
 210         str = _("Select unit for the bounding box values.");
 211         tooltips().init(bbox_->choice_bb_units, str);
 212
 213         str = _("Read the image coordinates new from file. For (e)ps-file "
 214                 "the bounding box is read, otherwise the imagesize in pixels. "
 215                 "Default unit is \"bp\", the PostScript's b(ig) p(oint).");
 216         tooltips().init(bbox_->button_getBB, str);
 217
 218         str = _("Clip image to the bounding box values.");
 219         tooltips().init(bbox_->check_clip, str);
 220
 221         // the extra section
 222         extra_.reset(build_graphics_extra(this));
 223
 224         // disable for read-only documents
 225         bcview().addReadOnly(extra_->input_rotate_angle);
 226         bcview().addReadOnly(extra_->choice_origin);
 227         bcview().addReadOnly(extra_->check_subcaption);
 228         bcview().addReadOnly(extra_->input_special);
 229
 230         // trigger an input event for cut&paste with middle mouse button.
 231         setPrehandler(extra_->input_rotate_angle);
 232         setPrehandler(extra_->input_subcaption);
 233         setPrehandler(extra_->input_special);
 234
 235         fl_set_input_return(extra_->input_rotate_angle, FL_RETURN_CHANGED);
 236         fl_set_input_return(extra_->input_subcaption, FL_RETURN_CHANGED);
 237         fl_set_input_return(extra_->input_special, FL_RETURN_CHANGED);
 238
 239         fl_set_input_filter(extra_->input_rotate_angle, fl_float_filter);
 240
 241         using namespace frnt;
 242         vector<RotationOriginPair> origindata = getRotationOriginData();
 243
 244         // Store the identifiers for later
 245         origins_ = getSecond(origindata);
 246
 247         string const choice = getStringFromVector(getFirst(origindata), "|");
 248         fl_addto_choice(extra_->choice_origin, choice.c_str());
 249
 250         // set up the tooltips for the extra section
 251         str = _("Insert the rotation angle in degrees. "
 252                 "Positive value rotates anti-clockwise, "
 253                 "negative value clockwise.");
 254         tooltips().init(extra_->input_rotate_angle, str);
 255         str = _("Insert the point of origin for rotation.");
 256         tooltips().init(extra_->choice_origin, str);
 257         str = _("Enables use of subfigure with its own caption.");
 258         tooltips().init(extra_->check_subcaption, str);
 259         str = _("Insert the optional subfigure caption.");
 260         tooltips().init(extra_->input_subcaption, str);
 261         str = _("Add any additional LaTeX option, which is defined in the "
 262                 "graphicx-package and not mentioned in the gui's tabfolders.");
 263         tooltips().init(extra_->input_special, str);
 264
 265         // Enable the tabfolder to be rescaled correctly.
 266         if (scalableTabfolders)
 267                 fl_set_tabfolder_autofit(dialog_->tabfolder, FL_FIT);
 268
 269         // Stack tabs
 270         fl_addto_tabfolder(dialog_->tabfolder, _("File").c_str(),
 271                            file_->form);
 272         fl_addto_tabfolder(dialog_->tabfolder, _("Bounding Box").c_str(),
 273                            bbox_->form);
 274         fl_addto_tabfolder(dialog_->tabfolder, _("Extra").c_str(),
 275                            extra_->form);
 276
 277         // set the right default unit
 278         switch (lyxrc.default_papersize) {
 279         case PAPER_DEFAULT: break;
 280         case PAPER_USLETTER:
 281         case PAPER_LEGALPAPER:
 282         case PAPER_EXECUTIVEPAPER: defaultUnit = "in"; break;
 283         case PAPER_A3PAPER:
 284         case PAPER_A4PAPER:
 285         case PAPER_A5PAPER:
 286         case PAPER_B5PAPER: defaultUnit = "cm"; break;
 287         }
 288 }
 289
 290
 291 void FormGraphics::apply()
 292 {
 293         // Create the parameters structure and fill the data from the dialog.
 294         InsetGraphicsParams & igp = controller().params();
 295
 296         // the file section
 297         igp.filename.set(getString(file_->input_filename),
 298                          kernel().bufferFilepath());
 299
 300         igp.lyxscale = strToInt(getString(file_->input_lyxscale));
 301         if (igp.lyxscale == 0) {
 302                 igp.lyxscale = 100;
 303         }
 304
 305         switch (fl_get_choice(file_->choice_display)) {
 306         case 5:
 307                 igp.display = lyx::graphics::NoDisplay;
 308                 break;
 309         case 4:
 310                 igp.display = lyx::graphics::ColorDisplay;
 311                 break;
 312         case 3:
 313                 igp.display = lyx::graphics::GrayscaleDisplay;
 314                 break;
 315         case 2:
 316                 igp.display = lyx::graphics::MonochromeDisplay;
 317                 break;
 318         case 1:
 319                 igp.display = lyx::graphics::DefaultDisplay;
 320         }
 321
 322         // first item in choice_width means scaling
 323         if (fl_get_choice(file_->choice_width) == 1) {
 324                 igp.scale = strToDbl(getString(file_->input_width));
 325                 if (float_equal(igp.scale, 0.0, 0.05)) {
 326                         igp.scale = 100.0;
 327                 }
 328                 igp.width = LyXLength();
 329         } else {
 330                 igp.scale = 0.0;
 331                 igp.width = LyXLength(getLengthFromWidgets(file_->input_width,
 332                                                            file_->choice_width));
 333         }
 334         igp.height = LyXLength(getLengthFromWidgets(file_->input_height,
 335                                                     file_->choice_height));
 336         igp.keepAspectRatio = fl_get_button(file_->check_aspectratio);
 337
 338         igp.draft = fl_get_button(file_->check_draft);
 339         igp.noUnzip = fl_get_button(file_->check_nounzip);
 340
 341         // the bb section
 342         if (!controller().bbChanged) {
 343                 // don't write anything
 344                 igp.bb.erase();
 345         } else {
 346                 // allow length + unit input only for x1 input field
 347                 string x1_str = "0";
 348                 if (!getString(bbox_->input_bb_x1).empty()) {
 349                         x1_str = getLengthFromWidgets(bbox_->input_bb_x1,
 350                                                       bbox_->choice_bb_units);
 351                         LyXLength x1 = LyXLength(x1_str);
 352                         x1_str = x1.asString();
 353
 354                         string unit;
 355                         switch (x1.unit()) {
 356                         case LyXLength::IN:
 357                                 unit = "in";
 358                                 break;
 359                         case LyXLength::MM:
 360                                 unit = "mm";
 361                                 break;
 362                         case LyXLength::CM:
 363                                 unit = "cm";
 364                                 break;
 365                         case LyXLength::BP:
 366                         default:
 367                                 unit = "bp";
 368                         }
 369                         fl_set_choice_text(bbox_->choice_bb_units, unit.c_str());
 370                 }
 371
 372                 string bb;
 373                 if (getString(bbox_->input_bb_x0).empty())
 374                         bb = "0";
 375                 else
 376                         bb = getLengthFromWidgets(bbox_->input_bb_x0,
 377                                                   bbox_->choice_bb_units);
 378
 379                 bb += ' ';
 380
 381                 if (getString(bbox_->input_bb_y0).empty())
 382                         bb += '0';
 383                 else
 384                         bb += getLengthFromWidgets(bbox_->input_bb_y0,
 385                                                   bbox_->choice_bb_units);
 386
 387                 bb += ' ' + x1_str + ' ';
 388
 389                 if (getString(bbox_->input_bb_y1).empty())
 390                         bb += '0';
 391                 else
 392                         bb += getLengthFromWidgets(bbox_->input_bb_y1,
 393                                                    bbox_->choice_bb_units);
 394
 395                 igp.bb = bb;
 396         }
 397         igp.clip = fl_get_button(bbox_->check_clip);
 398
 399         // the extra section
 400         igp.rotateAngle = strToDbl(getString(extra_->input_rotate_angle));
 401
 402         // map angle into -360 (clock-wise) to +360 (counter clock-wise)
 403         while (igp.rotateAngle <= -360.0) {
 404                 igp.rotateAngle += 360.0;
 405         }
 406         while (igp.rotateAngle >=  360.0) {
 407                 igp.rotateAngle -= 360.0;
 408         }
 409         fl_set_input(extra_->input_rotate_angle, tostr(igp.rotateAngle).c_str());
 410
 411         int const origin_pos = fl_get_choice(extra_->choice_origin);
 412         if (origin_pos == 0) {
 413                 igp.rotateOrigin.erase();
 414         } else {
 415                 igp.rotateOrigin = origins_[origin_pos - 1];
 416         }
 417
 418         igp.subcaption = fl_get_button(extra_->check_subcaption);
 419         igp.subcaptionText = getString(extra_->input_subcaption);
 420
 421         igp.special = getString(extra_->input_special);
 422 }
 423
 424
 425 void FormGraphics::update() {
 426         // Update dialog with details from inset
 427         InsetGraphicsParams & igp = controller().params();
 428
 429         // the file section
 430         string const name =
 431                 igp.filename.outputFilename(kernel().bufferFilepath());
 432         fl_set_input(file_->input_filename, name.c_str());
 433         fl_set_input(file_->input_lyxscale, tostr(igp.lyxscale).c_str());
 434
 435         switch (igp.display) {
 436         case lyx::graphics::NoDisplay:
 437                 fl_set_choice(file_->choice_display, 5);
 438                 break;
 439         case lyx::graphics::ColorDisplay:
 440                 fl_set_choice(file_->choice_display, 4);
 441                 break;
 442         case lyx::graphics::GrayscaleDisplay:
 443                 fl_set_choice(file_->choice_display, 3);
 444                 break;
 445         case lyx::graphics::MonochromeDisplay:
 446                 fl_set_choice(file_->choice_display, 2);
 447                 break;
 448         case lyx::graphics::DefaultDisplay:
 449                 fl_set_choice(file_->choice_display, 1);
 450         }
 451
 452         // set width input fields according to scaling or width/height input
 453         if (!float_equal(igp.scale, 0.0, 0.05)) {
 454                 fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 455                 fl_set_input_maxchars(file_->input_width, 0);
 456                 fl_set_input(file_->input_width, tostr(igp.scale).c_str());
 457                 fl_set_choice(file_->choice_width, 1);
 458         } else {
 459                 fl_set_input_filter(file_->input_width, NULL);
 460                 fl_set_input_maxchars(file_->input_width, SIZE_MAXDIGITS);
 461                 updateWidgetsFromLength(file_->input_width, file_->choice_width,
 462                                         igp.width, defaultUnit);
 463         }
 464
 465         updateWidgetsFromLength(file_->input_height, file_->choice_height,
 466                                 igp.height, defaultUnit);
 467
 468         // disable height input in case of scaling
 469         bool const disable_height = !float_equal(igp.scale, 0.0, 0.05);
 470         setEnabled(file_->input_height, !disable_height);
 471         setEnabled(file_->choice_height, !disable_height);
 472
 473         fl_set_button(file_->check_aspectratio, igp.keepAspectRatio);
 474         fl_set_button(file_->check_draft, igp.draft);
 475         fl_set_button(file_->check_nounzip, igp.noUnzip);
 476
 477         // disable aspectratio button in case of scaling or one of width/height
 478         // is empty
 479         bool const disable_aspectRatio = disable_height ||
 480                                 getString(file_->input_width).empty() ||
 481                                 getString(file_->input_height).empty();
 482         setEnabled(file_->check_aspectratio, !disable_aspectRatio);
 483
 484         // the bb section
 485         // set the bounding box values, if exists. First we need the whole
 486         // path, because the controller knows nothing about the doc-dir
 487         updateBB(igp.filename.absFilename(), igp.bb);
 488         fl_set_button(bbox_->check_clip, igp.clip);
 489
 490         // the extra section
 491         fl_set_input(extra_->input_rotate_angle,
 492                      tostr(igp.rotateAngle).c_str());
 493
 494         int origin_pos;
 495         if (igp.rotateOrigin.empty()) {
 496                 origin_pos = 1;
 497         } else {
 498                 origin_pos = 1 + findPos(origins_, igp.rotateOrigin);
 499         }
 500         fl_set_choice(extra_->choice_origin, origin_pos);
 501
 502         fl_set_button(extra_->check_subcaption, igp.subcaption);
 503         fl_set_input(extra_->input_subcaption, igp.subcaptionText.c_str());
 504         setEnabled(extra_->input_subcaption,
 505                    fl_get_button(extra_->check_subcaption));
 506         fl_set_input(extra_->input_special, igp.special.c_str());
 507
 508         // open dialog in the file-tab, whenever filename is empty
 509         if (igp.filename.empty()) {
 510                 fl_set_folder(dialog_->tabfolder, file_->form);
 511         }
 512 }
 513
 514
 515 void FormGraphics::updateBB(string const & filename, string const & bb_inset)
 516 {
 517         // Update dialog with details from inset
 518         // set the bounding box values, if exists. First we need the whole
 519         // path, because the controller knows nothing about the doc-dir
 520         controller().bbChanged = false;
 521         if (bb_inset.empty()) {
 522                 lyxerr[Debug::GRAPHICS]
 523                         << "FormGraphics::updateBB() [no BoundingBox]" << endl;
 524                 string const bb = controller().readBB(filename);
 525                 if (!bb.empty()) {
 526                         // get the values from the file
 527                         // in this case we always have the point-unit
 528                         fl_set_input(bbox_->input_bb_x0,
 529                                      token(bb,' ',0).c_str());
 530                         fl_set_input(bbox_->input_bb_y0,
 531                                      token(bb,' ',1).c_str());
 532                         fl_set_input(bbox_->input_bb_x1,
 533                                      token(bb,' ',2).c_str());
 534                         fl_set_input(bbox_->input_bb_y1,
 535                                      token(bb,' ',3).c_str());
 536
 537                 } else {
 538                         // no bb from file
 539                         fl_set_input(bbox_->input_bb_x0, bb.c_str());
 540                         fl_set_input(bbox_->input_bb_y0, bb.c_str());
 541                         fl_set_input(bbox_->input_bb_x1, bb.c_str());
 542                         fl_set_input(bbox_->input_bb_y1, bb.c_str());
 543                 }
 544                 // "bp"
 545                 fl_set_choice(bbox_->choice_bb_units, 1);
 546
 547         } else {
 548                 // get the values from the inset
 549                 lyxerr[Debug::GRAPHICS]
 550                         << "FormGraphics::updateBB(): igp has BoundingBox"
 551                         << " ["<< bb_inset << "]" << endl;
 552                 controller().bbChanged = true;
 553
 554                 LyXLength anyLength;
 555                 anyLength = LyXLength(token(bb_inset,' ',0));
 556                 updateWidgetsFromLength(bbox_->input_bb_x0,
 557                                         bbox_->choice_bb_units,anyLength,"bp");
 558                 anyLength = LyXLength(token(bb_inset,' ',1));
 559                 updateWidgetsFromLength(bbox_->input_bb_y0,
 560                                         bbox_->choice_bb_units,anyLength,"bp");
 561                 anyLength = LyXLength(token(bb_inset,' ',2));
 562                 updateWidgetsFromLength(bbox_->input_bb_x1,
 563                                         bbox_->choice_bb_units,anyLength,"bp");
 564                 anyLength = LyXLength(token(bb_inset,' ',3));
 565                 updateWidgetsFromLength(bbox_->input_bb_y1,
 566                                         bbox_->choice_bb_units,anyLength,"bp");
 567         }
 568 }
 569
 570
 571 ButtonPolicy::SMInput FormGraphics::input(FL_OBJECT * ob, long)
 572 {
 573         // the file section
 574         if (ob == file_->button_browse) {
 575                 // Get the filename from the dialog
 576                 string const in_name = getString(file_->input_filename);
 577                 string const out_name = controller().Browse(in_name);
 578                 lyxerr[Debug::GRAPHICS]
 579                         << "[FormGraphics]out_name: " << out_name << endl;
 580                 if (out_name != in_name && !out_name.empty()) {
 581                         fl_set_input(file_->input_filename, out_name.c_str());
 582                 }
 583                 if (controller().isFilenameValid(out_name) &&
 584                     !controller().bbChanged) {
 585                         updateBB(out_name, string());
 586                 }
 587         } else if (ob == file_->input_width || ob == file_->input_height) {
 588                 // disable aspectratio button in case of scaling or one of
 589                 // width/height is empty
 590                 bool const disable = fl_get_choice(file_->choice_width) == 1 ||
 591                                     getString(file_->input_width).empty() ||
 592                                     getString(file_->input_height).empty();
 593                 setEnabled(file_->check_aspectratio, !disable);
 594         } else if (ob == file_->choice_width) {
 595                 // disable height input in case of scaling
 596                 bool const scaling = fl_get_choice(file_->choice_width) == 1;
 597                 setEnabled(file_->input_height, !scaling);
 598                 setEnabled(file_->choice_height, !scaling);
 599
 600                 // allow only integer intput for scaling; float otherwise
 601                 if (scaling) {
 602                         fl_set_input_filter(file_->input_width, fl_unsigned_float_filter);
 603                         fl_set_input_maxchars(file_->input_width, 0);
 604                 } else {
 605                         fl_set_input_filter(file_->input_width, NULL);
 606                         fl_set_input_maxchars(file_->input_width, SIZE_MAXDIGITS);
 607                 }
 608
 609                 // disable aspectratio button in case of scaling or height
 610                 // input is empty
 611                 bool const disable_aspectratio =
 612                         scaling || getString(file_->input_height).empty();
 613                 setEnabled(file_->check_aspectratio, !disable_aspectratio);
 614         // the bb section
 615         } else if (!controller().bbChanged &&
 616                    (ob == bbox_->check_clip  || ob == bbox_->choice_bb_units ||
 617                     ob == bbox_->input_bb_x0 || ob == bbox_->input_bb_y0 ||
 618                     ob == bbox_->input_bb_x1 || ob == bbox_->input_bb_y1)) {
 619                 controller().bbChanged = true;
 620         } else if (ob == bbox_->button_getBB) {
 621                 string const filename = getString(file_->input_filename);
 622                 if (!filename.empty()) {
 623                         string bb = controller().readBB(filename);
 624                         if (!bb.empty()) {
 625                                 fl_set_input(bbox_->input_bb_x0, token(bb,' ',0).c_str());
 626                                 fl_set_input(bbox_->input_bb_y0, token(bb,' ',1).c_str());
 627                                 fl_set_input(bbox_->input_bb_x1, token(bb,' ',2).c_str());
 628                                 fl_set_input(bbox_->input_bb_y1, token(bb,' ',3).c_str());
 629                                 fl_set_choice_text(bbox_->choice_bb_units, "bp");
 630                         }
 631                         controller().bbChanged = false;
 632                 } else {
 633                         fl_set_input(bbox_->input_bb_x0, "");
 634                         fl_set_input(bbox_->input_bb_y0, "");
 635                         fl_set_input(bbox_->input_bb_x1, "");
 636                         fl_set_input(bbox_->input_bb_y1, "");
 637                         fl_set_choice_text(bbox_->choice_bb_units, "bp");
 638                 }
 639         // the extra section
 640         } else if (ob == extra_->check_subcaption) {
 641                 setEnabled(extra_->input_subcaption,
 642                            fl_get_button(extra_->check_subcaption));
 643
 644         }
 645
 646         return ButtonPolicy::SMI_VALID;
 647 }