frontend/maingui.cpp

   1 // maingui.cpp
   2
   3 // Copyright (C) 2012-2014 by Werner Lemberg.
   4 //
   5 // This file is part of the ttfautohint library, and may only be used,
   6 // modified, and distributed under the terms given in `COPYING'.  By
   7 // continuing to use, modify, or distribute this file you indicate that you
   8 // have read `COPYING' and understand and accept it fully.
   9 //
  10 // The file `COPYING' mentioned in the previous paragraph is distributed
  11 // with the ttfautohint library.
  12
  13
  14 #include <config.h>
  15
  16 #include <string.h>
  17 #include <stdio.h>
  18 #include <errno.h>
  19
  20 #include <QtGui>
  21
  22 #include "info.h"
  23 #include "maingui.h"
  24
  25 #include <ttfautohint.h>
  26
  27
  28 // XXX Qt 4.8 bug: locale->quoteString("foo")
  29 //                 inserts wrongly encoded quote characters
  30 //                 into rich text QString
  31 #if HAVE_QT_QUOTESTRING
  32 #  define QUOTE_STRING(x) locale->quoteString(x)
  33 #  define QUOTE_STRING_LITERAL(x) locale->quoteString(x)
  34 #else
  35 #  define QUOTE_STRING(x) "\"" + x + "\""
  36 #  define QUOTE_STRING_LITERAL(x) "\"" x "\""
  37 #endif
  38
  39
  40 // Shorthand for `tr' using a local `TRDOMAIN'.
  41 #define Tr(text) QCoreApplication::translate(TRDOMAIN, text)
  42
  43
  44 // the available script tags and its descriptions are directly extracted
  45 // from `ttfautohint-scripts.h'
  46 typedef struct Script_Names_
  47 {
  48   const char* tag;
  49   const char* description;
  50 } Script_Names;
  51
  52 #undef SCRIPT
  53 #define SCRIPT(s, S, d, h, sc1, sc2, sc3) \
  54           {#s, d},
  55
  56 const Script_Names script_names[] =
  57 {
  58 #include <ttfautohint-scripts.h>
  59   {NULL, NULL}
  60 };
  61
  62
  63 Main_GUI::Main_GUI(bool horizontal_layout,
  64                    int range_min,
  65                    int range_max,
  66                    int limit,
  67                    bool gray,
  68                    bool gdi,
  69                    bool dw,
  70                    int increase,
  71                    const char* exceptions,
  72                    int stem_width,
  73                    bool ignore,
  74                    bool wincomp,
  75                    bool adjust,
  76                    bool composites,
  77                    bool no,
  78                    const char* dflt,
  79                    const char* fallback,
  80                    bool symb,
  81                    bool dh)
  82 : hinting_range_min(range_min),
  83   hinting_range_max(range_max),
  84   hinting_limit(limit),
  85   gray_strong_stem_width(gray),
  86   gdi_cleartype_strong_stem_width(gdi),
  87   dw_cleartype_strong_stem_width(dw),
  88   increase_x_height(increase),
  89   x_height_snapping_exceptions_string(exceptions),
  90   fallback_stem_width(stem_width),
  91   ignore_restrictions(ignore),
  92   windows_compatibility(wincomp),
  93   adjust_subglyphs(adjust),
  94   hint_composites(composites),
  95   no_info(no),
  96   symbol(symb),
  97   dehint(dh)
  98 {
  99   int i;
 100
 101   // map default script tag to an index,
 102   // replacing an invalid one with the default value
 103   int latn_script_idx = 0;
 104   for (i = 0; script_names[i].tag; i++)
 105   {
 106     if (!strcmp("latn", script_names[i].tag))
 107       latn_script_idx = i;
 108     if (!strcmp(dflt, script_names[i].tag))
 109       break;
 110   }
 111   default_script_idx = script_names[i].tag ? i : latn_script_idx;
 112
 113   // map fallback script tag to an index,
 114   // replacing an invalid one with the default value
 115   int none_script_idx = 0;
 116   for (i = 0; script_names[i].tag; i++)
 117   {
 118     if (!strcmp("none", script_names[i].tag))
 119       none_script_idx = i;
 120     if (!strcmp(fallback, script_names[i].tag))
 121       break;
 122   }
 123   fallback_script_idx = script_names[i].tag ? i : none_script_idx;
 124
 125   x_height_snapping_exceptions = NULL;
 126
 127   // if file watching is active, we regularly poll the file status
 128   timer = new QTimer(this);
 129   timer->setInterval(1000);
 130   fileinfo_input_file.setCaching(false);
 131   fileinfo_deltas_file.setCaching(false);
 132
 133   // XXX register translations somewhere and loop over them
 134   if (QLocale::system().name() == "en_US")
 135     locale = new QLocale;
 136   else
 137     locale = new QLocale(QLocale::C);
 138
 139   create_layout(horizontal_layout);
 140   create_connections();
 141   create_actions();
 142   create_menus();
 143   create_status_bar();
 144
 145   set_defaults();
 146   read_settings();
 147
 148   setUnifiedTitleAndToolBarOnMac(true);
 149 }
 150
 151
 152 Main_GUI::~Main_GUI()
 153 {
 154   number_set_free(x_height_snapping_exceptions);
 155 }
 156
 157
 158 // overloading
 159
 160 void
 161 Main_GUI::closeEvent(QCloseEvent* event)
 162 {
 163   write_settings();
 164   event->accept();
 165 }
 166
 167
 168 void
 169 Main_GUI::about()
 170 {
 171   QMessageBox::about(this,
 172                      tr("About TTFautohint"),
 173                      tr("<p>This is <b>TTFautohint</b> version %1<br>"
 174                         " Copyright %2 2011-2014<br>"
 175                         " by Werner Lemberg <tt>&lt;wl@gnu.org&gt;</tt></p>"
 176                         ""
 177                         "<p><b>TTFautohint</b> adds new auto-generated hints"
 178                         " to a TrueType font or TrueType collection.</p>"
 179                         ""
 180                         "<p>License:"
 181                         " <a href='http://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/FTL.TXT'>FreeType"
 182                         " License (FTL)</a> or"
 183                         " <a href='http://git.savannah.gnu.org/cgit/freetype/freetype2.git/tree/docs/GPLv2.TXT'>GNU"
 184                         " GPLv2</a></p>")
 185                         .arg(VERSION)
 186                         .arg(QChar(0xA9)));
 187 }
 188
 189
 190 void
 191 Main_GUI::browse_input()
 192 {
 193   // XXX remember last directory
 194   QString file = QFileDialog::getOpenFileName(
 195                    this,
 196                    tr("Open Input File"),
 197                    QDir::homePath(),
 198                    "");
 199   if (!file.isEmpty())
 200     input_line->setText(QDir::toNativeSeparators(file));
 201 }
 202
 203
 204 void
 205 Main_GUI::browse_output()
 206 {
 207   // XXX remember last directory
 208   QString file = QFileDialog::getSaveFileName(
 209                    this,
 210                    tr("Open Output File"),
 211                    QDir::homePath(),
 212                    "");
 213
 214   if (!file.isEmpty())
 215     output_line->setText(QDir::toNativeSeparators(file));
 216 }
 217
 218
 219 void
 220 Main_GUI::browse_deltas()
 221 {
 222   // XXX remember last directory
 223   QString file = QFileDialog::getOpenFileName(
 224                    this,
 225                    tr("Open Delta Exceptions File"),
 226                    QDir::homePath(),
 227                    "");
 228
 229   if (!file.isEmpty())
 230     deltas_line->setText(QDir::toNativeSeparators(file));
 231 }
 232
 233
 234 void
 235 Main_GUI::check_min()
 236 {
 237   int min = min_box->value();
 238   int max = max_box->value();
 239   int limit = limit_box->value();
 240   if (min > max)
 241     max_box->setValue(min);
 242   if (min > limit)
 243     limit_box->setValue(min);
 244 }
 245
 246
 247 void
 248 Main_GUI::check_max()
 249 {
 250   int min = min_box->value();
 251   int max = max_box->value();
 252   int limit = limit_box->value();
 253   if (max < min)
 254     min_box->setValue(max);
 255   if (max > limit)
 256     limit_box->setValue(max);
 257 }
 258
 259
 260 void
 261 Main_GUI::check_limit()
 262 {
 263   int min = min_box->value();
 264   int max = max_box->value();
 265   int limit = limit_box->value();
 266   if (limit < max)
 267     max_box->setValue(limit);
 268   if (limit < min)
 269     min_box->setValue(limit);
 270 }
 271
 272
 273 void
 274 Main_GUI::check_dehint()
 275 {
 276   if (dehint_box->isChecked())
 277   {
 278     min_label->setEnabled(false);
 279     min_box->setEnabled(false);
 280
 281     max_label->setEnabled(false);
 282     max_box->setEnabled(false);
 283
 284     default_label->setEnabled(false);
 285     default_box->setEnabled(false);
 286     fallback_label->setEnabled(false);
 287     fallback_box->setEnabled(false);
 288
 289     no_limit_box->setEnabled(false);
 290     limit_label->setEnabled(false);
 291     limit_box->setEnabled(false);
 292
 293     no_increase_box->setEnabled(false);
 294     increase_label->setEnabled(false);
 295     increase_box->setEnabled(false);
 296
 297     snapping_label->setEnabled(false);
 298     snapping_line->setEnabled(false);
 299
 300     default_stem_width_box->setEnabled(false);
 301     stem_width_label->setEnabled(false);
 302     stem_width_box->setEnabled(false);
 303
 304     wincomp_box->setEnabled(false);
 305     adjust_box->setEnabled(false);
 306     hint_box->setEnabled(false);
 307     symbol_box->setEnabled(false);
 308
 309     stem_label->setEnabled(false);
 310     gray_box->setEnabled(false);
 311     gdi_box->setEnabled(false);
 312     dw_box->setEnabled(false);
 313   }
 314   else
 315   {
 316     min_label->setEnabled(true);
 317     min_box->setEnabled(true);
 318
 319     max_label->setEnabled(true);
 320     max_box->setEnabled(true);
 321
 322     default_label->setEnabled(true);
 323     default_box->setEnabled(true);
 324     fallback_label->setEnabled(true);
 325     fallback_box->setEnabled(true);
 326
 327     no_limit_box->setEnabled(true);
 328     check_no_limit();
 329
 330     no_increase_box->setEnabled(true);
 331     check_no_increase();
 332
 333     snapping_label->setEnabled(true);
 334     snapping_line->setEnabled(true);
 335
 336     default_stem_width_box->setEnabled(true);
 337     check_default_stem_width();
 338
 339     wincomp_box->setEnabled(true);
 340     adjust_box->setEnabled(true);
 341     hint_box->setEnabled(true);
 342     symbol_box->setEnabled(true);
 343
 344     stem_label->setEnabled(true);
 345     gray_box->setEnabled(true);
 346     gdi_box->setEnabled(true);
 347     dw_box->setEnabled(true);
 348   }
 349 }
 350
 351
 352 void
 353 Main_GUI::check_no_limit()
 354 {
 355   if (no_limit_box->isChecked())
 356   {
 357     limit_label->setEnabled(false);
 358     limit_label->setText(limit_label_text);
 359     limit_box->setEnabled(false);
 360     no_limit_box->setText(no_limit_box_text_with_key);
 361   }
 362   else
 363   {
 364     limit_label->setEnabled(true);
 365     limit_label->setText(limit_label_text_with_key);
 366     limit_box->setEnabled(true);
 367     no_limit_box->setText(no_limit_box_text);
 368   }
 369 }
 370
 371
 372 void
 373 Main_GUI::check_no_increase()
 374 {
 375   if (no_increase_box->isChecked())
 376   {
 377     increase_label->setEnabled(false);
 378     increase_label->setText(increase_label_text);
 379     increase_box->setEnabled(false);
 380     no_increase_box->setText(no_increase_box_text_with_key);
 381   }
 382   else
 383   {
 384     increase_label->setEnabled(true);
 385     increase_label->setText(increase_label_text_with_key);
 386     increase_box->setEnabled(true);
 387     no_increase_box->setText(no_increase_box_text);
 388   }
 389 }
 390
 391
 392 void
 393 Main_GUI::check_default_stem_width()
 394 {
 395   if (default_stem_width_box->isChecked())
 396   {
 397     stem_width_label->setEnabled(false);
 398     stem_width_label->setText(stem_width_label_text);
 399     stem_width_box->setEnabled(false);
 400     default_stem_width_box->setText(default_stem_width_box_text_with_key);
 401   }
 402   else
 403   {
 404     stem_width_label->setEnabled(true);
 405     stem_width_label->setText(stem_width_label_text_with_key);
 406     stem_width_box->setEnabled(true);
 407     default_stem_width_box->setText(default_stem_width_box_text);
 408   }
 409 }
 410
 411
 412 void
 413 Main_GUI::check_run()
 414 {
 415   if (input_line->text().isEmpty() || output_line->text().isEmpty())
 416     run_button->setEnabled(false);
 417   else
 418     run_button->setEnabled(true);
 419 }
 420
 421
 422 void
 423 Main_GUI::absolute_input()
 424 {
 425   QString input_name = QDir::fromNativeSeparators(input_line->text());
 426   if (!input_name.isEmpty()
 427       && QDir::isRelativePath(input_name))
 428   {
 429     QDir cur_path(QDir::currentPath() + "/" + input_name);
 430     input_line->setText(QDir::toNativeSeparators(cur_path.absolutePath()));
 431   }
 432 }
 433
 434
 435 void
 436 Main_GUI::absolute_output()
 437 {
 438   QString output_name = QDir::fromNativeSeparators(output_line->text());
 439   if (!output_name.isEmpty()
 440       && QDir::isRelativePath(output_name))
 441   {
 442     QDir cur_path(QDir::currentPath() + "/" + output_name);
 443     output_line->setText(QDir::toNativeSeparators(cur_path.absolutePath()));
 444   }
 445 }
 446
 447
 448 void
 449 Main_GUI::absolute_deltas()
 450 {
 451   QString deltas_name = QDir::fromNativeSeparators(deltas_line->text());
 452   if (!deltas_name.isEmpty()
 453       && QDir::isRelativePath(deltas_name))
 454   {
 455     QDir cur_path(QDir::currentPath() + "/" + deltas_name);
 456     deltas_line->setText(QDir::toNativeSeparators(cur_path.absolutePath()));
 457   }
 458 }
 459
 460
 461 void
 462 Main_GUI::check_number_set()
 463 {
 464   QString text = snapping_line->text();
 465   QString qs;
 466
 467   // construct ASCII string from arbitrary Unicode data;
 468   // the idea is to accept, say, CJK fullwidth digits also
 469   for (int i = 0; i < text.size(); i++)
 470   {
 471     QChar c = text.at(i);
 472
 473     int digit = c.digitValue();
 474     if (digit >= 0)
 475       qs += QString::number(digit);
 476     else if (c.isSpace())
 477       qs += ' ';
 478     // U+30FC KATAGANA-HIRAGANA PROLONGED SOUND MARK is assigned
 479     // to the `-' key in some Japanese input methods
 480     else if (c.category() == QChar::Punctuation_Dash
 481              || c == QChar(0x30FC))
 482       qs += '-';
 483     // various Unicode COMMA characters,
 484     // including representation forms
 485     else if (c == QChar(',')
 486              || c == QChar(0x055D)
 487              || c == QChar(0x060C)
 488              || c == QChar(0x07F8)
 489              || c == QChar(0x1363)
 490              || c == QChar(0x1802)
 491              || c == QChar(0x1808)
 492              || c == QChar(0x3001)
 493              || c == QChar(0xA4FE)
 494              || c == QChar(0xA60D)
 495              || c == QChar(0xA6F5)
 496              || c == QChar(0xFE10)
 497              || c == QChar(0xFE11)
 498              || c == QChar(0xFE50)
 499              || c == QChar(0xFE51)
 500              || c == QChar(0xFF0C)
 501              || c == QChar(0xFF64))
 502       qs += ',';
 503     else
 504       qs += c; // we do error handling below
 505   }
 506
 507   if (x_height_snapping_exceptions)
 508     number_set_free(x_height_snapping_exceptions);
 509
 510   QByteArray str = qs.toLocal8Bit();
 511   const char* s = number_set_parse(str.constData(),
 512                                    &x_height_snapping_exceptions,
 513                                    6, 0x7FFF);
 514   if (s && *s)
 515   {
 516     statusBar()->setStyleSheet("color: red;");
 517     if (x_height_snapping_exceptions == NUMBERSET_ALLOCATION_ERROR)
 518       statusBar()->showMessage(
 519         tr("allocation error"));
 520     else if (x_height_snapping_exceptions == NUMBERSET_INVALID_CHARACTER)
 521       statusBar()->showMessage(
 522         tr("invalid character (use digits, dashes, commas, and spaces)"));
 523     else if (x_height_snapping_exceptions == NUMBERSET_OVERFLOW)
 524       statusBar()->showMessage(
 525         tr("overflow"));
 526     else if (x_height_snapping_exceptions == NUMBERSET_INVALID_RANGE)
 527       statusBar()->showMessage(
 528         tr("invalid range (minimum is 6, maximum is 32767)"));
 529     else if (x_height_snapping_exceptions == NUMBERSET_OVERLAPPING_RANGES)
 530       statusBar()->showMessage(
 531         tr("overlapping ranges"));
 532     else if (x_height_snapping_exceptions == NUMBERSET_NOT_ASCENDING)
 533       statusBar()->showMessage(
 534         tr("values und ranges must be specified in ascending order"));
 535
 536     snapping_line->setText(qs);
 537     snapping_line->setFocus(Qt::OtherFocusReason);
 538     snapping_line->setCursorPosition(s - str.constData());
 539
 540     x_height_snapping_exceptions = NULL;
 541   }
 542   else
 543   {
 544     // normalize if there is no error
 545     char* new_str = number_set_show(x_height_snapping_exceptions,
 546                                     6, 0x7FFF);
 547     snapping_line->setText(new_str);
 548     free(new_str);
 549   }
 550 }
 551
 552
 553 void
 554 Main_GUI::clear_status_bar()
 555 {
 556   statusBar()->clearMessage();
 557   statusBar()->setStyleSheet("");
 558 }
 559
 560
 561 int
 562 Main_GUI::check_filenames(const QString& input_name,
 563                           const QString& output_name,
 564                           const QString& deltas_name)
 565 {
 566   if (!QFile::exists(input_name))
 567   {
 568     QMessageBox::warning(
 569       this,
 570       "TTFautohint",
 571       tr("The file %1 cannot be found.")
 572          .arg(QUOTE_STRING(QDir::toNativeSeparators(input_name))),
 573       QMessageBox::Ok,
 574       QMessageBox::Ok);
 575     return 0;
 576   }
 577
 578   if (input_name == output_name)
 579   {
 580     QMessageBox::warning(
 581       this,
 582       "TTFautohint",
 583       tr("Input and output file names must be different."),
 584       QMessageBox::Ok,
 585       QMessageBox::Ok);
 586     return 0;
 587   }
 588
 589   // silently overwrite if watching is active
 590   if (QFile::exists(output_name) && !timer->isActive())
 591   {
 592     int ret = QMessageBox::warning(
 593                 this,
 594                 "TTFautohint",
 595                 tr("The file %1 already exists.\n"
 596                    "Overwrite?")
 597                    .arg(QUOTE_STRING(QDir::toNativeSeparators(output_name))),
 598                 QMessageBox::Yes | QMessageBox::No,
 599                 QMessageBox::No);
 600     if (ret == QMessageBox::No)
 601       return 0;
 602   }
 603
 604   if (!deltas_name.isEmpty() && !QFile::exists(deltas_name))
 605   {
 606     QMessageBox::warning(
 607       this,
 608       "TTFautohint",
 609       tr("The file %1 cannot be found.")
 610          .arg(QUOTE_STRING(QDir::toNativeSeparators(deltas_name))),
 611       QMessageBox::Ok,
 612       QMessageBox::Ok);
 613     return 0;
 614   }
 615
 616   return 1;
 617 }
 618
 619
 620 int
 621 Main_GUI::open_files(const QString& input_name,
 622                      FILE** in,
 623                      const QString& output_name,
 624                      FILE** out,
 625                      const QString& deltas_name,
 626                      FILE** deltas)
 627 {
 628   const int buf_len = 1024;
 629   char buf[buf_len];
 630
 631   *in = fopen(qPrintable(input_name), "rb");
 632   if (!*in)
 633   {
 634     strerror_r(errno, buf, buf_len);
 635     QMessageBox::warning(
 636       this,
 637       "TTFautohint",
 638       tr("The following error occurred while opening input file %1:\n")
 639          .arg(QUOTE_STRING(QDir::toNativeSeparators(input_name)))
 640         + QString::fromLocal8Bit(buf),
 641       QMessageBox::Ok,
 642       QMessageBox::Ok);
 643     return 0;
 644   }
 645
 646   *out = fopen(qPrintable(output_name), "wb");
 647   if (!*out)
 648   {
 649     strerror_r(errno, buf, buf_len);
 650     QMessageBox::warning(
 651       this,
 652       "TTFautohint",
 653       tr("The following error occurred while opening output file %1:\n")
 654          .arg(QUOTE_STRING(QDir::toNativeSeparators(output_name)))
 655         + QString::fromLocal8Bit(buf),
 656       QMessageBox::Ok,
 657       QMessageBox::Ok);
 658     return 0;
 659   }
 660
 661   if (!deltas_name.isEmpty())
 662   {
 663     *deltas = fopen(qPrintable(deltas_name), "r");
 664     if (!*deltas)
 665     {
 666       strerror_r(errno, buf, buf_len);
 667       QMessageBox::warning(
 668         this,
 669         "TTFautohint",
 670         tr("The following error occurred"
 671            " while opening delta exceptions file %1:\n")
 672            .arg(QUOTE_STRING(QDir::toNativeSeparators(deltas_name)))
 673           + QString::fromLocal8Bit(buf),
 674         QMessageBox::Ok,
 675         QMessageBox::Ok);
 676       return 0;
 677     }
 678   }
 679
 680   return 1;
 681 }
 682
 683
 684 void
 685 Main_GUI::check_watch()
 686 {
 687   if (!watch_box->isChecked())
 688     timer->stop();
 689   // the timer gets started in the `run' function
 690 }
 691
 692
 693 void
 694 Main_GUI::watch_files()
 695 {
 696   if (fileinfo_input_file.exists()
 697       && fileinfo_input_file.isReadable()
 698       && fileinfo_deltas_file.exists()
 699       && fileinfo_deltas_file.isReadable())
 700   {
 701     QDateTime modified_input = fileinfo_input_file.lastModified();
 702     QDateTime modified_deltas = fileinfo_deltas_file.lastModified();
 703     if (modified_input > datetime_input_file
 704         || modified_deltas > datetime_deltas_file)
 705       run(); // this function sets `datetime_XXX'
 706   }
 707   else
 708     run(); // let this routine handle all errors
 709 }
 710
 711
 712 extern "C" {
 713
 714 struct GUI_Progress_Data
 715 {
 716   long last_sfnt;
 717   bool begin;
 718   QProgressDialog* dialog;
 719 };
 720
 721
 722 #undef TRDOMAIN
 723 #define TRDOMAIN "GuiProgress"
 724
 725 int
 726 gui_progress(long curr_idx,
 727              long num_glyphs,
 728              long curr_sfnt,
 729              long num_sfnts,
 730              void* user)
 731 {
 732   GUI_Progress_Data* data = static_cast<GUI_Progress_Data*>(user);
 733
 734   if (num_sfnts > 1 && curr_sfnt != data->last_sfnt)
 735   {
 736     data->dialog->setLabelText(Tr("Auto-hinting subfont %1 of %2"
 737                                   " with %3 glyphs...")
 738                                   .arg(curr_sfnt + 1)
 739                                   .arg(num_sfnts)
 740                                   .arg(num_glyphs));
 741
 742     if (curr_sfnt + 1 == num_sfnts)
 743     {
 744       data->dialog->setAutoReset(true);
 745       data->dialog->setAutoClose(true);
 746     }
 747     else
 748     {
 749       data->dialog->setAutoReset(false);
 750       data->dialog->setAutoClose(false);
 751     }
 752
 753     data->last_sfnt = curr_sfnt;
 754     data->begin = true;
 755   }
 756
 757   if (data->begin)
 758   {
 759     if (num_sfnts == 1)
 760       data->dialog->setLabelText(Tr("Auto-hinting %1 glyphs...")
 761                                     .arg(num_glyphs));
 762     data->dialog->setMaximum(num_glyphs - 1);
 763
 764     data->begin = false;
 765   }
 766
 767   data->dialog->setValue(curr_idx);
 768
 769   if (data->dialog->wasCanceled())
 770     return 1;
 771
 772   return 0;
 773 }
 774
 775
 776 struct GUI_Error_Data
 777 {
 778   Main_GUI* gui;
 779   QLocale* locale;
 780   QString output_name;
 781   QString deltas_name;
 782   int* ignore_restrictions_p;
 783   bool retry;
 784 };
 785
 786
 787 #undef TRDOMAIN
 788 #define TRDOMAIN "GuiError"
 789
 790 void
 791 gui_error(TA_Error error,
 792           const char* error_string,
 793           unsigned int errlinenum,
 794           const char* errline,
 795           const char* errpos,
 796           void* user)
 797 {
 798   GUI_Error_Data* data = static_cast<GUI_Error_Data*>(user);
 799   QLocale* locale = data->locale; // for QUOTE_STRING_LITERAL
 800
 801   if (!error)
 802     return;
 803
 804   if (error == TA_Err_Canceled)
 805     ;
 806   else if (error == TA_Err_Invalid_FreeType_Version)
 807     QMessageBox::critical(
 808       data->gui,
 809       "TTFautohint",
 810       Tr("FreeType version 2.4.5 or higher is needed.\n"
 811          "Are you perhaps using a wrong FreeType DLL?"),
 812       QMessageBox::Ok,
 813       QMessageBox::Ok);
 814   else if (error == TA_Err_Invalid_Font_Type)
 815     QMessageBox::warning(
 816       data->gui,
 817       "TTFautohint",
 818       Tr("This font is not a valid font"
 819          " in SFNT format with TrueType outlines.\n"
 820          "In particular, CFF outlines are not supported."),
 821       QMessageBox::Ok,
 822       QMessageBox::Ok);
 823   else if (error == TA_Err_Already_Processed)
 824     QMessageBox::warning(
 825       data->gui,
 826       "TTFautohint",
 827       Tr("This font has already been processed by TTFautohint."),
 828       QMessageBox::Ok,
 829       QMessageBox::Ok);
 830   else if (error == TA_Err_Missing_Legal_Permission)
 831   {
 832     int yesno = QMessageBox::warning(
 833                   data->gui,
 834                   "TTFautohint",
 835                   Tr("Bit 1 in the %1 field of the %2 table is set:"
 836                      " This font must not be modified"
 837                      " without permission of the legal owner.\n"
 838                      "Do you have such a permission?")
 839                      .arg(QUOTE_STRING_LITERAL("fsType"))
 840                      .arg(QUOTE_STRING_LITERAL("OS/2")),
 841                   QMessageBox::Yes | QMessageBox::No,
 842                   QMessageBox::No);
 843     if (yesno == QMessageBox::Yes)
 844     {
 845       *data->ignore_restrictions_p = true;
 846       data->retry = true;
 847     }
 848   }
 849   else if (error == TA_Err_Missing_Unicode_CMap)
 850     QMessageBox::warning(
 851       data->gui,
 852       "TTFautohint",
 853       Tr("The input font doesn't contain a Unicode character map.\n"
 854          "Maybe you haven't set the %1 checkbox?")
 855          .arg(QUOTE_STRING_LITERAL(Tr("Symbol Font"))),
 856       QMessageBox::Ok,
 857       QMessageBox::Ok);
 858   else if (error == TA_Err_Missing_Symbol_CMap)
 859     QMessageBox::warning(
 860       data->gui,
 861       "TTFautohint",
 862       Tr("The input font does neither contain a symbol"
 863          " nor a character map."),
 864       QMessageBox::Ok,
 865       QMessageBox::Ok);
 866   else if (error == TA_Err_Missing_Glyph)
 867     QMessageBox::warning(
 868       data->gui,
 869       "TTFautohint",
 870       Tr("No glyph for a standard character"
 871          " to derive standard width and height.\n"
 872          "Please check the documentation for a list of"
 873          " script-specific standard characters.\n"
 874          "\n"
 875          "Set the %1 checkbox if you want to circumvent this test.")
 876          .arg(QUOTE_STRING_LITERAL(Tr("Symbol Font"))),
 877       QMessageBox::Ok,
 878       QMessageBox::Ok);
 879   else if (error >= 0x200 && error < 0x300)
 880     QMessageBox::warning(
 881       data->gui,
 882       "TTFautohint",
 883       QString::fromLocal8Bit("%1:%2:%3: %4 (0x%5)<br>"
 884                              "<tt>  %6<br>"
 885                              "  %7</tt>")
 886                              .arg(data->deltas_name)
 887                              .arg(errlinenum)
 888                              .arg(int(errpos - errline + 1))
 889                              .arg(error_string)
 890                              .arg(error, 2, 16, QLatin1Char('0'))
 891                              .arg(errline)
 892                              .arg('^', int(errpos - errline + 1))
 893                              .replace(" ", "&nbsp;"),
 894       QMessageBox::Ok,
 895       QMessageBox::Ok);
 896   else
 897     QMessageBox::warning(
 898       data->gui,
 899       "TTFautohint",
 900       Tr("Error code 0x%1 while autohinting font:\n")
 901          .arg(error, 2, 16, QLatin1Char('0'))
 902         + QString::fromLocal8Bit(error_string),
 903       QMessageBox::Ok,
 904       QMessageBox::Ok);
 905
 906   if (QFile::exists(data->output_name)
 907       && remove(qPrintable(data->output_name)))
 908   {
 909     const int buf_len = 1024;
 910     char buf[buf_len];
 911
 912     strerror_r(errno, buf, buf_len);
 913     QMessageBox::warning(
 914       data->gui,
 915       "TTFautohint",
 916       Tr("The following error occurred while removing output file %1:\n")
 917          .arg(QUOTE_STRING(QDir::toNativeSeparators(data->output_name)))
 918         + QString::fromLocal8Bit(buf),
 919       QMessageBox::Ok,
 920       QMessageBox::Ok);
 921   }
 922 }
 923
 924 } // extern "C"
 925
 926
 927 void
 928 Main_GUI::run()
 929 {
 930   statusBar()->clearMessage();
 931
 932   QString input_name = QDir::fromNativeSeparators(input_line->text());
 933   QString output_name = QDir::fromNativeSeparators(output_line->text());
 934   QString deltas_name = QDir::fromNativeSeparators(deltas_line->text());
 935   if (!check_filenames(input_name, output_name, deltas_name))
 936   {
 937     timer->stop();
 938     return;
 939   }
 940
 941   // we need C file descriptors for communication with TTF_autohint
 942   FILE* input;
 943   FILE* output;
 944   FILE* deltas;
 945
 946 again:
 947   if (!open_files(input_name, &input,
 948                   output_name, &output,
 949                   deltas_name, &deltas))
 950   {
 951     timer->stop();
 952     return;
 953   }
 954
 955   QProgressDialog dialog;
 956   dialog.setCancelButtonText(tr("Cancel"));
 957   dialog.setMinimumDuration(1000);
 958   dialog.setWindowModality(Qt::WindowModal);
 959
 960   TA_Info_Func info_func = info;
 961   GUI_Progress_Data gui_progress_data = {-1, true, &dialog};
 962   GUI_Error_Data gui_error_data = {this, locale, output_name, deltas_name,
 963                                    &ignore_restrictions, false};
 964   Info_Data info_data;
 965
 966   info_data.data = NULL; // must be deallocated after use
 967   info_data.data_wide = NULL; // must be deallocated after use
 968   info_data.data_len = 0;
 969   info_data.data_wide_len = 0;
 970
 971   info_data.hinting_range_min = min_box->value();
 972   info_data.hinting_range_max = max_box->value();
 973   info_data.hinting_limit = no_limit_box->isChecked()
 974                             ? 0
 975                             : limit_box->value();
 976
 977   info_data.gray_strong_stem_width = gray_box->isChecked();
 978   info_data.gdi_cleartype_strong_stem_width = gdi_box->isChecked();
 979   info_data.dw_cleartype_strong_stem_width = dw_box->isChecked();
 980
 981   info_data.increase_x_height = no_increase_box->isChecked()
 982                                 ? 0
 983                                 : increase_box->value();
 984   info_data.x_height_snapping_exceptions_string =
 985     qPrintable(x_height_snapping_exceptions_string);
 986   info_data.fallback_stem_width = default_stem_width_box->isChecked()
 987                                   ? 0
 988                                   : stem_width_box->value();
 989
 990   info_data.windows_compatibility = wincomp_box->isChecked();
 991   info_data.adjust_subglyphs = adjust_box->isChecked();
 992   info_data.hint_composites = hint_box->isChecked();
 993   info_data.symbol = symbol_box->isChecked();
 994   info_data.dehint = dehint_box->isChecked();
 995
 996   strncpy(info_data.default_script,
 997           script_names[default_box->currentIndex()].tag,
 998           sizeof (info_data.default_script));
 999   strncpy(info_data.fallback_script,
1000           script_names[fallback_box->currentIndex()].tag,
1001           sizeof (info_data.fallback_script));
1002
1003   if (info_box->isChecked())
1004   {
1005     int ret = build_version_string(&info_data);
1006     if (ret == 1)
1007       QMessageBox::information(
1008         this,
1009         "TTFautohint",
1010         tr("Can't allocate memory for <b>TTFautohint</b> options string"
1011            " in <i>name</i> table."),
1012         QMessageBox::Ok,
1013         QMessageBox::Ok);
1014     else if (ret == 2)
1015       QMessageBox::information(
1016         this,
1017         "TTFautohint",
1018         tr("<b>TTFautohint</b> options string"
1019            " in <i>name</i> table too long."),
1020         QMessageBox::Ok,
1021         QMessageBox::Ok);
1022   }
1023   else
1024     info_func = NULL;
1025
1026   if (info_data.symbol
1027       && info_data.fallback_stem_width
1028       && !strcmp(info_data.fallback_script, "none"))
1029     QMessageBox::information(
1030       this,
1031       "TTFautohint",
1032       tr("Setting a fallback stem width for a symbol font"
1033          " without setting a fallback script has no effect."),
1034       QMessageBox::Ok,
1035       QMessageBox::Ok);
1036
1037   fileinfo_input_file.setFile(input_name);
1038   fileinfo_deltas_file.setFile(deltas_name);
1039   datetime_input_file = fileinfo_input_file.lastModified();
1040   datetime_deltas_file = fileinfo_deltas_file.lastModified();
1041
1042   QByteArray snapping_string = snapping_line->text().toLocal8Bit();
1043
1044   TA_Error error =
1045     TTF_autohint("in-file, out-file, deltas-file,"
1046                  "hinting-range-min, hinting-range-max,"
1047                  "hinting-limit,"
1048                  "gray-strong-stem-width,"
1049                  "gdi-cleartype-strong-stem-width,"
1050                  "dw-cleartype-strong-stem-width,"
1051                  "progress-callback, progress-callback-data,"
1052                  "error-callback, error-callback-data,"
1053                  "info-callback, info-callback-data,"
1054                  "ignore-restrictions,"
1055                  "windows-compatibility,"
1056                  "adjust-subglyphs,"
1057                  "hint-composites,"
1058                  "increase-x-height,"
1059                  "x-height-snapping-exceptions, fallback-stem-width,"
1060                  "default-script, fallback-script,"
1061                  "symbol, dehint",
1062                  input, output, deltas,
1063                  info_data.hinting_range_min, info_data.hinting_range_max,
1064                  info_data.hinting_limit,
1065                  info_data.gray_strong_stem_width,
1066                  info_data.gdi_cleartype_strong_stem_width,
1067                  info_data.dw_cleartype_strong_stem_width,
1068                  gui_progress, &gui_progress_data,
1069                  gui_error, &gui_error_data,
1070                  info_func, &info_data,
1071                  ignore_restrictions,
1072                  info_data.windows_compatibility,
1073                  info_data.adjust_subglyphs,
1074                  info_data.hint_composites,
1075                  info_data.increase_x_height,
1076                  snapping_string.constData(), info_data.fallback_stem_width,
1077                  info_data.default_script, info_data.fallback_script,
1078                  info_data.symbol, info_data.dehint);
1079
1080   if (info_box->isChecked())
1081   {
1082     free(info_data.data);
1083     free(info_data.data_wide);
1084   }
1085
1086   fclose(input);
1087   fclose(output);
1088   if (deltas)
1089     fclose(deltas);
1090
1091   if (error)
1092   {
1093     // retry if there is a user request to do so (handled in `gui_error')
1094     if (gui_error_data.retry)
1095       goto again;
1096
1097     timer->stop();
1098   }
1099   else
1100   {
1101     statusBar()->showMessage(tr("Auto-hinting finished")
1102                              + " ("
1103                              + QDateTime::currentDateTime()
1104                                .toString(Qt::TextDate)
1105                              + ").");
1106
1107     // we have successfully processed a file;
1108     // start file watching now if requested
1109     if (watch_box->isChecked())
1110       timer->start();
1111   }
1112 }
1113
1114
1115 // XXX distances are specified in pixels,
1116 //     making the layout dependent on the output device resolution
1117 void
1118 Main_GUI::create_layout(bool horizontal_layout)
1119 {
1120   //
1121   // file stuff
1122   //
1123   QCompleter* completer = new QCompleter(this);
1124   QFileSystemModel* model = new QFileSystemModel(completer);
1125   model->setRootPath(QDir::rootPath());
1126   completer->setModel(model);
1127
1128   input_label = new QLabel(tr("&Input File:"));
1129   input_line = new Drag_Drop_Line_Edit(DRAG_DROP_TRUETYPE);
1130   input_button = new QPushButton(tr("Browse..."));
1131   input_label->setBuddy(input_line);
1132   // enforce rich text to get nice word wrapping
1133   input_label->setToolTip(
1134     tr("<b></b>The input file, either a TrueType font (TTF),"
1135        " TrueType collection (TTC), or a TrueType-based OpenType font."));
1136   input_line->setCompleter(completer);
1137
1138   output_label = new QLabel(tr("&Output File:"));
1139   output_line = new Drag_Drop_Line_Edit(DRAG_DROP_TRUETYPE);
1140   output_button = new QPushButton(tr("Browse..."));
1141   output_label->setBuddy(output_line);
1142   output_label->setToolTip(
1143     tr("<b></b>The output file, which will be essentially identical"
1144        " to the input font but will contain new, generated hints."));
1145   output_line->setCompleter(completer);
1146
1147   deltas_label = new QLabel(tr("Delta &Exception File:"));
1148   deltas_line = new Drag_Drop_Line_Edit(DRAG_DROP_ANY);
1149   deltas_button = new QPushButton(tr("Browse..."));
1150   deltas_label->setBuddy(deltas_line);
1151   deltas_label->setToolTip(
1152     tr("<p>An optional delta exceptions file to fine-tune point positions"
1153        " after hinting, using DELTAP TrueType instructions."
1154        "  This text file contains lines of the form<br>"
1155        "&nbsp;<br>"
1156        "&nbsp;&nbsp;[&nbsp;<i>subfont-idx</i>&nbsp;]"
1157        "&nbsp;&nbsp;<i>glyph-id</i>"
1158        "&nbsp;&nbsp;<tt>p</tt>&nbsp;<i>points</i>"
1159        "&nbsp;&nbsp;[&nbsp;<tt>x</tt>&nbsp;<i>shift</i>&nbsp;]"
1160        "&nbsp;&nbsp;[&nbsp;<tt>y</tt>&nbsp;<i>shift</i>&nbsp;]"
1161        "&nbsp;&nbsp;<tt>@</tt>&nbsp;<i>ppems</i><br>"
1162        "&nbsp;<br>"
1163        "<i>subfont-idx</i> gives the subfont index in a TTC,"
1164        " <i>glyph-id</i> is a glyph name or index,"
1165        " the x and y <i>shift</i> values are in the range [-1;1],"
1166        " rounded to multiples of 1/8px,"
1167        " <i>points</i> and <i>ppems</i> are ranges for point indices"
1168        " and ppem values as with x&nbsp;height snapping exceptions.<br>"
1169        "<tt>#</tt> starts a line comment, which gets ignored."
1170        "  Empty lines are ignored, too.</p>"
1171        ""
1172        "Example:<br>"
1173        "&nbsp;&nbsp;<tt>Adieresis p 3-6 y 0.25 @ 13</tt>"));
1174   deltas_line->setCompleter(completer);
1175
1176   //
1177   // minmax controls
1178   //
1179   min_label = new QLabel(tr("Hint Set Range Mi&nimum:"));
1180   min_box = new QSpinBox;
1181   min_label->setBuddy(min_box);
1182   min_label->setToolTip(
1183     tr("The minimum PPEM value of the range for which"
1184        " <b>TTFautohint</b> computes <i>hint sets</i>."
1185        " A hint set for a given PPEM value hints this size optimally."
1186        " The larger the range, the more hint sets are considered,"
1187        " usually increasing the size of the bytecode.<br>"
1188        "Note that changing this range doesn't influence"
1189        " the <i>gasp</i> table:"
1190        " Hinting is enabled for all sizes."));
1191   min_box->setKeyboardTracking(false);
1192   min_box->setRange(2, 10000);
1193
1194   max_label = new QLabel(tr("Hint Set Range Ma&ximum:"));
1195   max_box = new QSpinBox;
1196   max_label->setBuddy(max_box);
1197   max_label->setToolTip(
1198     tr("The maximum PPEM value of the range for which"
1199        " <b>TTFautohint</b> computes <i>hint sets</i>."
1200        " A hint set for a given PPEM value hints this size optimally."
1201        " The larger the range, the more hint sets are considered,"
1202        " usually increasing the size of the bytecode.<br>"
1203        "Note that changing this range doesn't influence"
1204        " the <i>gasp</i> table:"
1205        " Hinting is enabled for all sizes."));
1206   max_box->setKeyboardTracking(false);
1207   max_box->setRange(2, 10000);
1208
1209   //
1210   // OpenType default script
1211   //
1212   default_label = new QLabel(tr("Defa&ult Script:"));
1213   default_box = new QComboBox;
1214   default_label->setBuddy(default_box);
1215   default_label->setToolTip(
1216     tr("This sets the default script for OpenType features:"
1217        "  After applying all features that are handled specially"
1218        " (for example small caps or superscript glyphs),"
1219        " <b>TTFautohint</b> uses this value for the remaining features."));
1220   for (int i = 0; script_names[i].tag; i++)
1221   {
1222     // XXX: how to provide translations?
1223     default_box->insertItem(i,
1224                             QString("%1 (%2)")
1225                                     .arg(script_names[i].tag)
1226                                     .arg(script_names[i].description));
1227   }
1228
1229   //
1230   // hinting and fallback controls
1231   //
1232   fallback_label = new QLabel(tr("Fallback &Script:"));
1233   fallback_box = new QComboBox;
1234   fallback_label->setBuddy(fallback_box);
1235   fallback_label->setToolTip(
1236     tr("This sets the fallback script for glyphs"
1237        " that <b>TTFautohint</b> can't map to a script automatically."));
1238   for (int i = 0; script_names[i].tag; i++)
1239   {
1240     // XXX: how to provide translations?
1241     fallback_box->insertItem(i,
1242                              QString("%1 (%2)")
1243                                      .arg(script_names[i].tag)
1244                                      .arg(script_names[i].description));
1245   }
1246
1247   //
1248   // hinting limit
1249   //
1250   limit_label_text_with_key = tr("Hinting &Limit:");
1251   limit_label_text = tr("Hinting Limit:");
1252   limit_label = new QLabel(limit_label_text_with_key);
1253   limit_box = new QSpinBox;
1254   limit_label->setBuddy(limit_box);
1255   limit_label->setToolTip(
1256     tr("Switch off hinting for PPEM values exceeding this limit."
1257        " Changing this value does not influence the size of the bytecode.<br>"
1258        "Note that <b>TTFautohint</b> handles this feature"
1259        " in the output font's bytecode and not in the <i>gasp</i> table."));
1260   limit_box->setKeyboardTracking(false);
1261   limit_box->setRange(2, 10000);
1262
1263   no_limit_box_text_with_key = tr("No Hinting &Limit");
1264   no_limit_box_text = tr("No Hinting Limit");
1265   no_limit_box = new QCheckBox(no_limit_box_text, this);
1266   no_limit_box->setToolTip(
1267     tr("If switched on, <b>TTFautohint</b> adds no hinting limit"
1268        " to the bytecode.<br>"
1269        "For testing only."));
1270
1271   //
1272   // x height increase limit
1273   //
1274   increase_label_text_with_key = tr("x Height In&crease Limit:");
1275   increase_label_text = tr("x Height Increase Limit:");
1276   increase_label = new QLabel(increase_label_text_with_key);
1277   increase_box = new QSpinBox;
1278   increase_label->setBuddy(increase_box);
1279   increase_label->setToolTip(
1280     tr("For PPEM values in the range 5&nbsp;&lt; PPEM &lt;&nbsp;<i>n</i>,"
1281        " where <i>n</i> is the value selected by this spin box,"
1282        " round up the font's x&nbsp;height much more often than normally.<br>"
1283        "Use this if holes in letters like <i>e</i> get filled,"
1284        " for example."));
1285   increase_box->setKeyboardTracking(false);
1286   increase_box->setRange(6, 10000);
1287
1288   no_increase_box_text_with_key = tr("No x Height In&crease");
1289   no_increase_box_text = tr("No x Height Increase");
1290   no_increase_box = new QCheckBox(no_increase_box_text, this);
1291   no_increase_box->setToolTip(
1292     tr("If switched on,"
1293        " <b>TTFautohint</b> does not increase the x&nbsp;height."));
1294
1295   //
1296   // x height snapping exceptions
1297   //
1298   snapping_label = new QLabel(tr("x Height Snapping Excep&tions:"));
1299   snapping_line = new Tooltip_Line_Edit;
1300   snapping_label->setBuddy(snapping_line);
1301   snapping_label->setToolTip(
1302     tr("<p>A list of comma separated PPEM values or value ranges"
1303        " at which no x&nbsp;height snapping shall be applied"
1304        " (x&nbsp;height snapping usually slightly increases"
1305        " the size of all glyphs).</p>"
1306        ""
1307        "Examples:<br>"
1308        "&nbsp;&nbsp;<tt>2, 3-5, 12-17</tt><br>"
1309        "&nbsp;&nbsp;<tt>-20, 40-</tt>"
1310        " (meaning PPEM &le; 20 or PPEM &ge; 40)<br>"
1311        "&nbsp;&nbsp;<tt>-</tt> (meaning all possible PPEM values)"));
1312
1313   //
1314   // fallback stem width
1315   //
1316   stem_width_label_text_with_key = tr("Fall&back Stem Width:");
1317   stem_width_label_text = tr("Fallback Stem Width:");
1318   stem_width_label = new QLabel(stem_width_label_text_with_key);
1319   stem_width_box = new QSpinBox;
1320   stem_width_label->setBuddy(stem_width_box);
1321   stem_width_label->setToolTip(
1322     tr("Set horizontal stem width (in font units) for all scripts"
1323        " that lack proper standard characters in the font.<br>"
1324        "If not set, <b>TTFautohint</b> uses a hard-coded default value."));
1325   stem_width_box->setKeyboardTracking(false);
1326   stem_width_box->setRange(1, 10000);
1327
1328   default_stem_width_box_text_with_key = tr("Default Fall&back Stem Width");
1329   default_stem_width_box_text = tr("Default Fallback Stem Width");
1330   default_stem_width_box = new QCheckBox(default_stem_width_box_text, this);
1331   default_stem_width_box->setToolTip(
1332     tr("If switched on, <b>TTFautohint</b> uses a default value"
1333        " for the fallback stem width (50 font units at 2048 UPEM)."));
1334
1335   //
1336   // flags
1337   //
1338   wincomp_box = new QCheckBox(tr("Windows Com&patibility"), this);
1339   wincomp_box->setToolTip(
1340     tr("If switched on, add two artificial blue zones positioned at the"
1341        " <tt>usWinAscent</tt> and <tt>usWinDescent</tt> values"
1342        " (from the font's <i>OS/2</i> table)."
1343        "  This option, usually in combination"
1344        " with value <tt>-</tt> (a single dash)"
1345        " for the <i>x&nbsp;Height Snapping Exceptions</i> option,"
1346        " should be used if those two <i>OS/2</i> values are tight,"
1347        " and you are experiencing clipping during rendering."));
1348
1349   adjust_box = new QCheckBox(tr("Ad&just Subglyphs"), this);
1350   adjust_box->setToolTip(
1351     tr("If switched on, the original bytecode of the input font"
1352        " gets applied (at EM size, usually 2048ppem)"
1353        " to derive the glyph outlines for <b>TTFautohint</b>.<br>"
1354        "Use this option only if subglyphs"
1355        " are incorrectly scaled and shifted.<br>"
1356        "Note that the original bytecode will always be discarded."));
1357
1358   hint_box = new QCheckBox(tr("Hint Co&mposites")
1359                            + "                ", this); // make label wider
1360   hint_box->setToolTip(
1361     tr("If switched on, <b>TTFautohint</b> hints composite glyphs"
1362        " as a whole, including subglyphs."
1363        "  Otherwise, glyph components get hinted separately.<br>"
1364        "Deactivating this flag reduces the bytecode size enormously,"
1365        " however, it might yield worse results."));
1366
1367   symbol_box = new QCheckBox(tr("S&ymbol Font"), this);
1368   symbol_box->setToolTip(
1369     tr("If switched on, <b>TTFautohint</b> accepts fonts"
1370        " that don't contain a single standard character"
1371        " for any of the supported scripts.<br>"
1372        "Use this for symbol or dingbat fonts, for example."));
1373
1374   dehint_box = new QCheckBox(tr("&Dehint"), this);
1375   dehint_box->setToolTip(
1376     tr("If set, remove all hints from the font.<br>"
1377        "For testing only."));
1378
1379   info_box = new QCheckBox(tr("Add ttf&autohint Info"), this);
1380   info_box->setToolTip(
1381     tr("If switched on, information about <b>TTFautohint</b>"
1382        " and its calling parameters are added to the version string(s)"
1383        " (name ID&nbsp;5) in the <i>name</i> table."));
1384
1385   //
1386   // stem width and positioning
1387   //
1388   stem_label = new QLabel(tr("Stron&g Stem Width and Positioning:"));
1389   stem_label->setToolTip(
1390     tr("<b>TTFautohint</b> provides two different hinting algorithms"
1391        " that can be selected for various hinting modes."
1392        ""
1393        "<p><i>strong</i> (checkbox set):"
1394        " Position horizontal stems and snap stem widths"
1395        " to integer pixel values.  While making the output look crisper,"
1396        " outlines become more distorted.</p>"
1397        ""
1398        "<p><i>smooth</i> (checkbox not set):"
1399        " Use discrete values for horizontal stems and stem widths."
1400        "  This only slightly increases the contrast"
1401        " but avoids larger outline distortion.</p>"));
1402
1403   gray_box = new QCheckBox(tr("Grayscale"), this);
1404   gray_box->setToolTip(
1405     tr("<b></b>Grayscale rendering, no ClearType activated."));
1406   stem_label->setBuddy(gray_box);
1407
1408   gdi_box = new QCheckBox(tr("GDI ClearType"), this);
1409   gdi_box->setToolTip(
1410     tr("GDI ClearType rendering,"
1411        " introduced in 2000 for Windows XP.<br>"
1412        "The rasterizer version (as returned by the"
1413        " GETINFO bytecode instruction) is in the range"
1414        " 36&nbsp;&le; version &lt;&nbsp;38, and ClearType is enabled.<br>"
1415        "Along the vertical axis, this mode behaves like B/W rendering."));
1416
1417   dw_box = new QCheckBox(tr("DW ClearType"), this);
1418   dw_box->setToolTip(
1419     tr("DirectWrite ClearType rendering,"
1420        " introduced in 2008 for Windows Vista.<br>"
1421        "The rasterizer version (as returned by the"
1422        " GETINFO bytecode instruction) is &ge;&nbsp;38,"
1423        " ClearType is enabled, and subpixel positioning is enabled also.<br>"
1424        "Smooth rendering along the vertical axis."));
1425
1426   //
1427   // running
1428   //
1429   watch_box = new QCheckBox(tr("&Watch Input Files"), this);
1430   watch_box->setToolTip(
1431     tr("If switched on, <b>TTFautohint</b> automatically re-runs"
1432        " the hinting process as soon as an input file"
1433        " (either the font or the delta exceptions file) is modified.<br>"
1434        "Pressing the %1 button starts watching.<br>"
1435        "If an error occurs, watching stops and must be restarted"
1436        " with the %1 button.")
1437        .arg(QUOTE_STRING_LITERAL(tr("Run"))));
1438
1439   run_button = new QPushButton("    "
1440                                + tr("&Run")
1441                                + "    "); // make label wider
1442
1443   if (horizontal_layout)
1444     create_horizontal_layout();
1445   else
1446     create_vertical_layout();
1447 }
1448
1449
1450 // XXX distances are specified in pixels,
1451 //     making the layout dependent on the output device resolution
1452 void
1453 Main_GUI::create_vertical_layout()
1454 {
1455   // top area
1456   QGridLayout* file_layout = new QGridLayout;
1457
1458   file_layout->addWidget(input_label, 0, 0, Qt::AlignRight);
1459   file_layout->addWidget(input_line, 0, 1);
1460   file_layout->addWidget(input_button, 0, 2);
1461
1462   file_layout->setRowStretch(1, 1);
1463
1464   file_layout->addWidget(output_label, 2, 0, Qt::AlignRight);
1465   file_layout->addWidget(output_line, 2, 1);
1466   file_layout->addWidget(output_button, 2, 2);
1467
1468   file_layout->setRowStretch(3, 1);
1469
1470   file_layout->addWidget(deltas_label, 4, 0, Qt::AlignRight);
1471   file_layout->addWidget(deltas_line, 4, 1);
1472   file_layout->addWidget(deltas_button, 4, 2);
1473
1474   // bottom area
1475   QGridLayout* run_layout = new QGridLayout;
1476
1477   run_layout->addWidget(watch_box, 0, 1);
1478   run_layout->addWidget(run_button, 0, 3, Qt::AlignRight);
1479   run_layout->setColumnStretch(0, 1);
1480   run_layout->setColumnStretch(2, 2);
1481
1482   //
1483   // the whole gui
1484   //
1485   QGridLayout* gui_layout = new QGridLayout;
1486   QFrame* hline = new QFrame;
1487   hline->setFrameShape(QFrame::HLine);
1488   int row = 0; // this counter simplifies inserting new items
1489
1490   gui_layout->setRowMinimumHeight(row, 10); // XXX urgh, pixels...
1491   gui_layout->setRowStretch(row++, 1);
1492
1493   gui_layout->addLayout(file_layout, row, 0, row, -1);
1494   gui_layout->setRowStretch(row++, 1);
1495
1496   gui_layout->addWidget(hline, row, 0, row, -1);
1497   gui_layout->setRowStretch(row++, 1);
1498
1499   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1500   gui_layout->setRowStretch(row++, 1);
1501
1502   gui_layout->addWidget(min_label, row, 0, Qt::AlignRight);
1503   gui_layout->addWidget(min_box, row++, 1, Qt::AlignLeft);
1504   gui_layout->addWidget(max_label, row, 0, Qt::AlignRight);
1505   gui_layout->addWidget(max_box, row++, 1, Qt::AlignLeft);
1506
1507   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1508   gui_layout->setRowStretch(row++, 1);
1509
1510   gui_layout->addWidget(default_label, row, 0, Qt::AlignRight);
1511   gui_layout->addWidget(default_box, row++, 1, Qt::AlignLeft);
1512   gui_layout->addWidget(fallback_label, row, 0, Qt::AlignRight);
1513   gui_layout->addWidget(fallback_box, row++, 1, Qt::AlignLeft);
1514
1515   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1516   gui_layout->setRowStretch(row++, 1);
1517
1518   gui_layout->addWidget(limit_label, row, 0, Qt::AlignRight);
1519   gui_layout->addWidget(limit_box, row++, 1, Qt::AlignLeft);
1520   gui_layout->addWidget(no_limit_box, row++, 1);
1521
1522   gui_layout->addWidget(increase_label, row, 0, Qt::AlignRight);
1523   gui_layout->addWidget(increase_box, row++, 1, Qt::AlignLeft);
1524   gui_layout->addWidget(no_increase_box, row++, 1);
1525
1526   gui_layout->addWidget(snapping_label, row, 0, Qt::AlignRight);
1527   gui_layout->addWidget(snapping_line, row++, 1, Qt::AlignLeft);
1528
1529   gui_layout->addWidget(stem_width_label, row, 0, Qt::AlignRight);
1530   gui_layout->addWidget(stem_width_box, row++, 1, Qt::AlignLeft);
1531   gui_layout->addWidget(default_stem_width_box, row++, 1);
1532
1533   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1534   gui_layout->setRowStretch(row++, 1);
1535
1536   gui_layout->addWidget(wincomp_box, row++, 1);
1537   gui_layout->addWidget(adjust_box, row++, 1);
1538   gui_layout->addWidget(hint_box, row++, 1);
1539   gui_layout->addWidget(symbol_box, row++, 1);
1540   gui_layout->addWidget(dehint_box, row++, 1);
1541   gui_layout->addWidget(info_box, row++, 1);
1542
1543   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1544   gui_layout->setRowStretch(row++, 1);
1545
1546   gui_layout->addWidget(stem_label, row, 0, Qt::AlignRight);
1547   gui_layout->addWidget(gray_box, row++, 1);
1548   gui_layout->addWidget(gdi_box, row++, 1);
1549   gui_layout->addWidget(dw_box, row++, 1);
1550
1551   gui_layout->setRowMinimumHeight(row, 30); // XXX urgh, pixels...
1552   gui_layout->setRowStretch(row++, 1);
1553
1554   gui_layout->addLayout(run_layout, row, 0, row, -1);
1555
1556   // create dummy widget to register layout
1557   QWidget* main_widget = new QWidget;
1558   main_widget->setLayout(gui_layout);
1559   setCentralWidget(main_widget);
1560   setWindowTitle("TTFautohint");
1561 }
1562
1563
1564 // XXX distances are specified in pixels,
1565 //     making the layout dependent on the output device resolution
1566 void
1567 Main_GUI::create_horizontal_layout()
1568 {
1569   // top area
1570   QGridLayout* file_layout = new QGridLayout;
1571
1572   file_layout->addWidget(input_label, 0, 0, Qt::AlignRight);
1573   file_layout->addWidget(input_line, 0, 1);
1574   file_layout->addWidget(input_button, 0, 2);
1575
1576   file_layout->setRowStretch(1, 1);
1577
1578   file_layout->addWidget(output_label, 2, 0, Qt::AlignRight);
1579   file_layout->addWidget(output_line, 2, 1);
1580   file_layout->addWidget(output_button, 2, 2);
1581
1582   file_layout->setRowStretch(3, 1);
1583
1584   file_layout->addWidget(deltas_label, 4, 0, Qt::AlignRight);
1585   file_layout->addWidget(deltas_line, 4, 1);
1586   file_layout->addWidget(deltas_button, 4, 2);
1587
1588   // bottom area
1589   QGridLayout* run_layout = new QGridLayout;
1590
1591   run_layout->addWidget(watch_box, 0, 1);
1592   run_layout->addWidget(run_button, 0, 3, Qt::AlignRight);
1593   run_layout->setColumnStretch(0, 2);
1594   run_layout->setColumnStretch(2, 3);
1595   run_layout->setColumnStretch(4, 1);
1596
1597   //
1598   // the whole gui
1599   //
1600   QGridLayout* gui_layout = new QGridLayout;
1601   QFrame* hline = new QFrame;
1602   hline->setFrameShape(QFrame::HLine);
1603   int row = 0; // this counter simplifies inserting new items
1604
1605   // margin
1606   gui_layout->setColumnMinimumWidth(0, 10); // XXX urgh, pixels...
1607   gui_layout->setColumnStretch(0, 1);
1608
1609   // left
1610   gui_layout->setRowMinimumHeight(row, 10); // XXX urgh, pixels...
1611   gui_layout->setRowStretch(row++, 1);
1612
1613   gui_layout->addLayout(file_layout, row, 0, row, -1);
1614   gui_layout->setRowStretch(row++, 1);
1615
1616   gui_layout->addWidget(hline, row, 0, row, -1);
1617   gui_layout->setRowStretch(row++, 1);
1618
1619   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1620   gui_layout->setRowStretch(row++, 1);
1621
1622   gui_layout->addWidget(min_label, row, 1, Qt::AlignRight);
1623   gui_layout->addWidget(min_box, row++, 2, Qt::AlignLeft);
1624   gui_layout->addWidget(max_label, row, 1, Qt::AlignRight);
1625   gui_layout->addWidget(max_box, row++, 2, Qt::AlignLeft);
1626
1627   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1628   gui_layout->setRowStretch(row++, 1);
1629
1630   gui_layout->addWidget(default_label, row, 1, Qt::AlignRight);
1631   gui_layout->addWidget(default_box, row++, 2, Qt::AlignLeft);
1632   gui_layout->addWidget(fallback_label, row, 1, Qt::AlignRight);
1633   gui_layout->addWidget(fallback_box, row++, 2, Qt::AlignLeft);
1634
1635   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1636   gui_layout->setRowStretch(row++, 1);
1637
1638   gui_layout->addWidget(limit_label, row, 1, Qt::AlignRight);
1639   gui_layout->addWidget(limit_box, row++, 2, Qt::AlignLeft);
1640   gui_layout->addWidget(no_limit_box, row++, 2);
1641
1642   gui_layout->addWidget(increase_label, row, 1, Qt::AlignRight);
1643   gui_layout->addWidget(increase_box, row++, 2, Qt::AlignLeft);
1644   gui_layout->addWidget(no_increase_box, row++, 2);
1645
1646   gui_layout->addWidget(snapping_label, row, 1, Qt::AlignRight);
1647   gui_layout->addWidget(snapping_line, row++, 2, Qt::AlignLeft);
1648
1649   gui_layout->addWidget(stem_width_label, row, 1, Qt::AlignRight);
1650   gui_layout->addWidget(stem_width_box, row++, 2, Qt::AlignLeft);
1651   gui_layout->addWidget(default_stem_width_box, row++, 2);
1652
1653   gui_layout->setRowMinimumHeight(row, 30); // XXX urgh, pixels...
1654   gui_layout->setRowStretch(row++, 1);
1655
1656   gui_layout->addLayout(run_layout, row, 0, row, -1);
1657
1658   // column separator
1659   gui_layout->setColumnMinimumWidth(3, 20); // XXX urgh, pixels...
1660   gui_layout->setColumnStretch(3, 1);
1661
1662   // right
1663   row = 4;
1664   gui_layout->addWidget(wincomp_box, row++, 4);
1665   gui_layout->addWidget(adjust_box, row++, 4);
1666   gui_layout->addWidget(hint_box, row++, 4);
1667   gui_layout->addWidget(symbol_box, row++, 4);
1668   gui_layout->addWidget(dehint_box, row++, 4);
1669   gui_layout->addWidget(info_box, row++, 4);
1670
1671   gui_layout->setRowMinimumHeight(row, 20); // XXX urgh, pixels...
1672   gui_layout->setRowStretch(row++, 1);
1673
1674   gui_layout->addWidget(stem_label, row++, 4);
1675
1676   QGridLayout* stem_layout = new QGridLayout;
1677   stem_layout->setColumnMinimumWidth(0, 20); // XXX urgh, pixels...
1678   stem_layout->addWidget(gray_box, 0, 1);
1679   stem_layout->addWidget(gdi_box, 1, 1);
1680   stem_layout->addWidget(dw_box, 2, 1);
1681
1682   gui_layout->addLayout(stem_layout, row, 4, 3, 1);
1683   row += 3;
1684
1685   // margin
1686   gui_layout->setColumnMinimumWidth(5, 10); // XXX urgh, pixels...
1687   gui_layout->setColumnStretch(5, 1);
1688
1689   // create dummy widget to register layout
1690   QWidget* main_widget = new QWidget;
1691   main_widget->setLayout(gui_layout);
1692   setCentralWidget(main_widget);
1693   setWindowTitle("TTFautohint");
1694 }
1695
1696
1697 void
1698 Main_GUI::create_connections()
1699 {
1700   connect(input_button, SIGNAL(clicked()), this,
1701           SLOT(browse_input()));
1702   connect(output_button, SIGNAL(clicked()), this,
1703           SLOT(browse_output()));
1704   connect(deltas_button, SIGNAL(clicked()), this,
1705           SLOT(browse_deltas()));
1706
1707   connect(input_line, SIGNAL(textChanged(QString)), this,
1708           SLOT(check_run()));
1709   connect(output_line, SIGNAL(textChanged(QString)), this,
1710           SLOT(check_run()));
1711
1712   connect(input_line, SIGNAL(editingFinished()), this,
1713           SLOT(absolute_input()));
1714   connect(output_line, SIGNAL(editingFinished()), this,
1715           SLOT(absolute_output()));
1716   connect(deltas_line, SIGNAL(editingFinished()), this,
1717           SLOT(absolute_deltas()));
1718
1719   connect(min_box, SIGNAL(valueChanged(int)), this,
1720           SLOT(check_min()));
1721   connect(max_box, SIGNAL(valueChanged(int)), this,
1722           SLOT(check_max()));
1723
1724   connect(limit_box, SIGNAL(valueChanged(int)), this,
1725           SLOT(check_limit()));
1726   connect(no_limit_box, SIGNAL(clicked()), this,
1727           SLOT(check_no_limit()));
1728
1729   connect(no_increase_box, SIGNAL(clicked()), this,
1730           SLOT(check_no_increase()));
1731
1732   connect(snapping_line, SIGNAL(editingFinished()), this,
1733           SLOT(check_number_set()));
1734   connect(snapping_line, SIGNAL(textEdited(QString)), this,
1735           SLOT(clear_status_bar()));
1736
1737   connect(default_stem_width_box, SIGNAL(clicked()), this,
1738           SLOT(check_default_stem_width()));
1739
1740   connect(dehint_box, SIGNAL(clicked()), this,
1741           SLOT(check_dehint()));
1742
1743   connect(timer, SIGNAL(timeout()), this,
1744           SLOT(watch_files()));
1745
1746   connect(watch_box, SIGNAL(clicked()), this,
1747           SLOT(check_watch()));
1748
1749   connect(run_button, SIGNAL(clicked()), this,
1750           SLOT(run()));
1751 }
1752
1753
1754 void
1755 Main_GUI::create_actions()
1756 {
1757   exit_act = new QAction(tr("E&xit"), this);
1758   exit_act->setShortcuts(QKeySequence::Quit);
1759   connect(exit_act, SIGNAL(triggered()), this, SLOT(close()));
1760
1761   about_act = new QAction(tr("&About"), this);
1762   connect(about_act, SIGNAL(triggered()), this, SLOT(about()));
1763
1764   about_Qt_act = new QAction(tr("About &Qt"), this);
1765   connect(about_Qt_act, SIGNAL(triggered()), qApp, SLOT(aboutQt()));
1766 }
1767
1768
1769 void
1770 Main_GUI::create_menus()
1771 {
1772   file_menu = menuBar()->addMenu(tr("&File"));
1773   file_menu->addAction(exit_act);
1774
1775   help_menu = menuBar()->addMenu(tr("&Help"));
1776   help_menu->addAction(about_act);
1777   help_menu->addAction(about_Qt_act);
1778 }
1779
1780
1781 void
1782 Main_GUI::create_status_bar()
1783 {
1784   statusBar()->showMessage("");
1785 }
1786
1787
1788 void
1789 Main_GUI::set_defaults()
1790 {
1791   min_box->setValue(hinting_range_min);
1792   max_box->setValue(hinting_range_max);
1793
1794   default_box->setCurrentIndex(default_script_idx);
1795   fallback_box->setCurrentIndex(fallback_script_idx);
1796
1797   limit_box->setValue(hinting_limit ? hinting_limit : hinting_range_max);
1798   // handle command line option `--hinting-limit=0'
1799   if (!hinting_limit)
1800   {
1801     hinting_limit = max_box->value();
1802     no_limit_box->setChecked(true);
1803   }
1804
1805   increase_box->setValue(increase_x_height ? increase_x_height
1806                                            : TA_INCREASE_X_HEIGHT);
1807   // handle command line option `--increase-x-height=0'
1808   if (!increase_x_height)
1809   {
1810     increase_x_height = TA_INCREASE_X_HEIGHT;
1811     no_increase_box->setChecked(true);
1812   }
1813
1814   snapping_line->setText(x_height_snapping_exceptions_string);
1815
1816   if (fallback_stem_width)
1817     stem_width_box->setValue(fallback_stem_width);
1818   else
1819   {
1820     stem_width_box->setValue(50);
1821     default_stem_width_box->setChecked(true);
1822   }
1823
1824   if (windows_compatibility)
1825     wincomp_box->setChecked(true);
1826   if (adjust_subglyphs)
1827     adjust_box->setChecked(true);
1828   if (hint_composites)
1829     hint_box->setChecked(true);
1830   if (symbol)
1831     symbol_box->setChecked(true);
1832   if (dehint)
1833     dehint_box->setChecked(true);
1834   if (!no_info)
1835     info_box->setChecked(true);
1836
1837   if (gray_strong_stem_width)
1838     gray_box->setChecked(true);
1839   if (gdi_cleartype_strong_stem_width)
1840     gdi_box->setChecked(true);
1841   if (dw_cleartype_strong_stem_width)
1842     dw_box->setChecked(true);
1843
1844   run_button->setEnabled(false);
1845
1846   check_min();
1847   check_max();
1848   check_limit();
1849
1850   check_no_limit();
1851   check_no_increase();
1852   check_number_set();
1853
1854   // do this last since it disables almost everything
1855   check_dehint();
1856 }
1857
1858
1859 void
1860 Main_GUI::read_settings()
1861 {
1862   QSettings settings;
1863 //  QPoint pos = settings.value("pos", QPoint(200, 200)).toPoint();
1864 //  QSize size = settings.value("size", QSize(400, 400)).toSize();
1865 //  resize(size);
1866 //  move(pos);
1867 }
1868
1869
1870 void
1871 Main_GUI::write_settings()
1872 {
1873   QSettings settings;
1874 //  settings.setValue("pos", pos());
1875 //  settings.setValue("size", size());
1876 }
1877
1878 // end of maingui.cpp