src/common/textcmn.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/textcmn.cpp
   3 // Purpose:     implementation of platform-independent functions of wxTextCtrl
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     13.07.99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWidgets team
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // for compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20     #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24     #include "wx/event.h"
  25 #endif // WX_PRECOMP
  26
  27 #if wxUSE_TEXTCTRL
  28
  29 #include "wx/textctrl.h"
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/intl.h"
  33     #include "wx/log.h"
  34 #endif // WX_PRECOMP
  35
  36 #include "wx/ffile.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // macros
  40 // ----------------------------------------------------------------------------
  41
  42 // we don't have any objects of type wxTextCtrlBase in the program, only
  43 // wxTextCtrl, so this cast is safe
  44 #define TEXTCTRL(ptr)   ((wxTextCtrl *)(ptr))
  45
  46 // ============================================================================
  47 // implementation
  48 // ============================================================================
  49
  50 IMPLEMENT_DYNAMIC_CLASS(wxTextUrlEvent, wxCommandEvent)
  51
  52 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
  53 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_ENTER)
  54 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_URL)
  55 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_MAXLEN)
  56
  57 IMPLEMENT_ABSTRACT_CLASS(wxTextCtrlBase, wxControl)
  58
  59 // ============================================================================
  60 // wxTextAttr implementation
  61 // ============================================================================
  62
  63 wxTextAttr::wxTextAttr(const wxColour& colText,
  64                const wxColour& colBack,
  65                const wxFont& font,
  66                wxTextAttrAlignment alignment): m_textAlignment(alignment), m_colText(colText), m_colBack(colBack)
  67 {
  68     Init();
  69
  70     if (m_colText.Ok()) m_flags |= wxTEXT_ATTR_TEXT_COLOUR;
  71     if (m_colBack.Ok()) m_flags |= wxTEXT_ATTR_BACKGROUND_COLOUR;
  72     if (alignment != wxTEXT_ALIGNMENT_DEFAULT)
  73         m_flags |= wxTEXT_ATTR_ALIGNMENT;
  74
  75     GetFontAttributes(font);
  76 }
  77
  78 // Initialisation
  79 void wxTextAttr::Init()
  80 {
  81     m_textAlignment = wxTEXT_ALIGNMENT_DEFAULT;
  82     m_flags = 0;
  83     m_leftIndent = 0;
  84     m_leftSubIndent = 0;
  85     m_rightIndent = 0;
  86
  87     m_fontSize = 12;
  88     m_fontStyle = wxNORMAL;
  89     m_fontWeight = wxNORMAL;
  90     m_fontUnderlined = false;
  91     m_fontEncoding = wxFONTENCODING_DEFAULT;
  92
  93     m_paragraphSpacingAfter = 0;
  94     m_paragraphSpacingBefore = 0;
  95     m_lineSpacing = 0;
  96     m_bulletStyle = wxTEXT_ATTR_BULLET_STYLE_NONE;
  97     m_textEffects = wxTEXT_ATTR_EFFECT_NONE;
  98     m_textEffectFlags = wxTEXT_ATTR_EFFECT_NONE;
  99     m_outlineLevel = 0;
 100     m_bulletNumber = 0;
 101 }
 102
 103 // Copy
 104 void wxTextAttr::Copy(const wxTextAttr& attr)
 105 {
 106     m_colText = attr.m_colText;
 107     m_colBack = attr.m_colBack;
 108     m_textAlignment = attr.m_textAlignment;
 109     m_leftIndent = attr.m_leftIndent;
 110     m_leftSubIndent = attr.m_leftSubIndent;
 111     m_rightIndent = attr.m_rightIndent;
 112     m_tabs = attr.m_tabs;
 113     m_flags = attr.m_flags;
 114
 115     m_fontSize = attr.m_fontSize;
 116     m_fontStyle = attr.m_fontStyle;
 117     m_fontWeight = attr.m_fontWeight;
 118     m_fontUnderlined = attr.m_fontUnderlined;
 119     m_fontFaceName = attr.m_fontFaceName;
 120     m_fontEncoding = attr.m_fontEncoding;
 121     m_textEffects = attr.m_textEffects;
 122     m_textEffectFlags = attr.m_textEffectFlags;
 123
 124     m_paragraphSpacingAfter = attr.m_paragraphSpacingAfter;
 125     m_paragraphSpacingBefore = attr.m_paragraphSpacingBefore;
 126     m_lineSpacing = attr.m_lineSpacing;
 127     m_characterStyleName = attr.m_characterStyleName;
 128     m_paragraphStyleName = attr.m_paragraphStyleName;
 129     m_listStyleName = attr.m_listStyleName;
 130     m_bulletStyle = attr.m_bulletStyle;
 131     m_bulletNumber = attr.m_bulletNumber;
 132     m_bulletText = attr.m_bulletText;
 133     m_bulletFont = attr.m_bulletFont;
 134     m_bulletName = attr.m_bulletName;
 135     m_outlineLevel = attr.m_outlineLevel;
 136
 137     m_urlTarget = attr.m_urlTarget;
 138 }
 139
 140 // operators
 141 void wxTextAttr::operator= (const wxTextAttr& attr)
 142 {
 143     Copy(attr);
 144 }
 145
 146 // Equality test
 147 bool wxTextAttr::operator== (const wxTextAttr& attr) const
 148 {
 149     return  GetFlags() == attr.GetFlags() &&
 150
 151             GetTextColour() == attr.GetTextColour() &&
 152             GetBackgroundColour() == attr.GetBackgroundColour() &&
 153
 154             GetAlignment() == attr.GetAlignment() &&
 155             GetLeftIndent() == attr.GetLeftIndent() &&
 156             GetLeftSubIndent() == attr.GetLeftSubIndent() &&
 157             GetRightIndent() == attr.GetRightIndent() &&
 158             TabsEq(GetTabs(), attr.GetTabs()) &&
 159
 160             GetParagraphSpacingAfter() == attr.GetParagraphSpacingAfter() &&
 161             GetParagraphSpacingBefore() == attr.GetParagraphSpacingBefore() &&
 162             GetLineSpacing() == attr.GetLineSpacing() &&
 163             GetCharacterStyleName() == attr.GetCharacterStyleName() &&
 164             GetParagraphStyleName() == attr.GetParagraphStyleName() &&
 165             GetListStyleName() == attr.GetListStyleName() &&
 166
 167             GetBulletStyle() == attr.GetBulletStyle() &&
 168             GetBulletText() == attr.GetBulletText() &&
 169             GetBulletNumber() == attr.GetBulletNumber() &&
 170             GetBulletFont() == attr.GetBulletFont() &&
 171             GetBulletName() == attr.GetBulletName() &&
 172
 173             GetTextEffects() == attr.GetTextEffects() &&
 174             GetTextEffectFlags() == attr.GetTextEffectFlags() &&
 175
 176             GetOutlineLevel() == attr.GetOutlineLevel() &&
 177
 178             GetFontSize() == attr.GetFontSize() &&
 179             GetFontStyle() == attr.GetFontStyle() &&
 180             GetFontWeight() == attr.GetFontWeight() &&
 181             GetFontUnderlined() == attr.GetFontUnderlined() &&
 182             GetFontFaceName() == attr.GetFontFaceName() &&
 183             GetFontEncoding() == attr.GetFontEncoding() &&
 184
 185             GetURL() == attr.GetURL();
 186 }
 187
 188 // Partial equality test taking flags into account
 189 bool wxTextAttr::EqPartial(const wxTextAttr& attr, int flags) const
 190 {
 191     if ((flags & wxTEXT_ATTR_TEXT_COLOUR) && GetTextColour() != attr.GetTextColour())
 192         return false;
 193
 194     if ((flags & wxTEXT_ATTR_BACKGROUND_COLOUR) && GetBackgroundColour() != attr.GetBackgroundColour())
 195         return false;
 196
 197     if ((flags & wxTEXT_ATTR_FONT_FACE) &&
 198         GetFontFaceName() != attr.GetFontFaceName())
 199         return false;
 200
 201     if ((flags & wxTEXT_ATTR_FONT_SIZE) &&
 202         GetFontSize() != attr.GetFontSize())
 203         return false;
 204
 205     if ((flags & wxTEXT_ATTR_FONT_WEIGHT) &&
 206         GetFontWeight() != attr.GetFontWeight())
 207         return false;
 208
 209     if ((flags & wxTEXT_ATTR_FONT_ITALIC) &&
 210         GetFontStyle() != attr.GetFontStyle())
 211         return false;
 212
 213     if ((flags & wxTEXT_ATTR_FONT_UNDERLINE) &&
 214         GetFontUnderlined() != attr.GetFontUnderlined())
 215         return false;
 216
 217     if ((flags & wxTEXT_ATTR_FONT_ENCODING) &&
 218         GetFontEncoding() != attr.GetFontEncoding())
 219         return false;
 220
 221     if ((flags & wxTEXT_ATTR_URL) && GetURL() != attr.GetURL())
 222         return false;
 223
 224     if ((flags & wxTEXT_ATTR_ALIGNMENT) && GetAlignment() != attr.GetAlignment())
 225         return false;
 226
 227     if ((flags & wxTEXT_ATTR_LEFT_INDENT) &&
 228         ((GetLeftIndent() != attr.GetLeftIndent()) || (GetLeftSubIndent() != attr.GetLeftSubIndent())))
 229         return false;
 230
 231     if ((flags & wxTEXT_ATTR_RIGHT_INDENT) &&
 232         (GetRightIndent() != attr.GetRightIndent()))
 233         return false;
 234
 235     if ((flags & wxTEXT_ATTR_PARA_SPACING_AFTER) &&
 236         (GetParagraphSpacingAfter() != attr.GetParagraphSpacingAfter()))
 237         return false;
 238
 239     if ((flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) &&
 240         (GetParagraphSpacingBefore() != attr.GetParagraphSpacingBefore()))
 241         return false;
 242
 243     if ((flags & wxTEXT_ATTR_LINE_SPACING) &&
 244         (GetLineSpacing() != attr.GetLineSpacing()))
 245         return false;
 246
 247     if ((flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&
 248         (GetCharacterStyleName() != attr.GetCharacterStyleName()))
 249         return false;
 250
 251     if ((flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&
 252         (GetParagraphStyleName() != attr.GetParagraphStyleName()))
 253         return false;
 254
 255     if ((flags & wxTEXT_ATTR_LIST_STYLE_NAME) &&
 256         (GetListStyleName() != attr.GetListStyleName()))
 257         return false;
 258
 259     if ((flags & wxTEXT_ATTR_BULLET_STYLE) &&
 260         (GetBulletStyle() != attr.GetBulletStyle()))
 261          return false;
 262
 263     if ((flags & wxTEXT_ATTR_BULLET_NUMBER) &&
 264         (GetBulletNumber() != attr.GetBulletNumber()))
 265          return false;
 266
 267     if ((flags & wxTEXT_ATTR_BULLET_TEXT) &&
 268         (GetBulletText() != attr.GetBulletText()) &&
 269         (GetBulletFont() != attr.GetBulletFont()))
 270          return false;
 271
 272     if ((flags & wxTEXT_ATTR_BULLET_NAME) &&
 273         (GetBulletName() != attr.GetBulletName()))
 274          return false;
 275
 276     if ((flags & wxTEXT_ATTR_TABS) &&
 277         !TabsEq(GetTabs(), attr.GetTabs()))
 278         return false;
 279
 280     if ((flags & wxTEXT_ATTR_PAGE_BREAK) &&
 281         (HasPageBreak() != attr.HasPageBreak()))
 282          return false;
 283
 284     if (flags & wxTEXT_ATTR_EFFECTS)
 285     {
 286         if (HasTextEffects() != attr.HasTextEffects())
 287             return false;
 288         if (!BitlistsEqPartial(GetTextEffects(), attr.GetTextEffects(), attr.GetTextEffectFlags()))
 289             return false;
 290     }
 291
 292     if ((flags & wxTEXT_ATTR_OUTLINE_LEVEL) &&
 293         (GetOutlineLevel() != attr.GetOutlineLevel()))
 294          return false;
 295
 296     return true;
 297 }
 298
 299 // Create font from font attributes.
 300 wxFont wxTextAttr::GetFont() const
 301 {
 302     if ( !HasFont() )
 303         return wxNullFont;
 304
 305     int fontSize = 10;
 306     if (HasFontSize())
 307         fontSize = GetFontSize();
 308
 309     int fontStyle = wxNORMAL;
 310     if (HasFontItalic())
 311         fontStyle = GetFontStyle();
 312
 313     int fontWeight = wxNORMAL;
 314     if (HasFontWeight())
 315         fontWeight = GetFontWeight();
 316
 317     bool underlined = false;
 318     if (HasFontUnderlined())
 319         underlined = GetFontUnderlined();
 320
 321     wxString fontFaceName;
 322     if (HasFontFaceName())
 323         fontFaceName = GetFontFaceName();
 324
 325     wxFontEncoding encoding = wxFONTENCODING_DEFAULT;
 326     if (HasFontEncoding())
 327         encoding = GetFontEncoding();
 328
 329     wxFont font(fontSize, wxDEFAULT, fontStyle, fontWeight, underlined, fontFaceName, encoding);
 330 #ifdef __WXMAC__
 331     font.SetNoAntiAliasing(true);
 332 #endif
 333     return font;
 334 }
 335
 336 // Get attributes from font.
 337 bool wxTextAttr::GetFontAttributes(const wxFont& font, int flags)
 338 {
 339     if (!font.Ok())
 340         return false;
 341
 342     if (flags & wxTEXT_ATTR_FONT_SIZE)
 343         m_fontSize = font.GetPointSize();
 344
 345     if (flags & wxTEXT_ATTR_FONT_ITALIC)
 346         m_fontStyle = font.GetStyle();
 347
 348     if (flags & wxTEXT_ATTR_FONT_WEIGHT)
 349         m_fontWeight = font.GetWeight();
 350
 351     if (flags & wxTEXT_ATTR_FONT_UNDERLINE)
 352         m_fontUnderlined = font.GetUnderlined();
 353
 354     if (flags & wxTEXT_ATTR_FONT_FACE)
 355         m_fontFaceName = font.GetFaceName();
 356
 357     if (flags & wxTEXT_ATTR_FONT_ENCODING)
 358         m_fontEncoding = font.GetEncoding();
 359
 360     m_flags |= flags;
 361
 362     return true;
 363 }
 364
 365 bool wxTextAttr::Apply(const wxTextAttr& style, const wxTextAttr* compareWith)
 366 {
 367     wxTextAttr& destStyle = (*this);
 368
 369     if (style.HasFontWeight())
 370     {
 371         if (!(compareWith && compareWith->HasFontWeight() && compareWith->GetFontWeight() == style.GetFontWeight()))
 372             destStyle.SetFontWeight(style.GetFontWeight());
 373     }
 374
 375     if (style.HasFontSize())
 376     {
 377         if (!(compareWith && compareWith->HasFontSize() && compareWith->GetFontSize() == style.GetFontSize()))
 378             destStyle.SetFontSize(style.GetFontSize());
 379     }
 380
 381     if (style.HasFontItalic())
 382     {
 383         if (!(compareWith && compareWith->HasFontItalic() && compareWith->GetFontStyle() == style.GetFontStyle()))
 384             destStyle.SetFontStyle(style.GetFontStyle());
 385     }
 386
 387     if (style.HasFontUnderlined())
 388     {
 389         if (!(compareWith && compareWith->HasFontUnderlined() && compareWith->GetFontUnderlined() == style.GetFontUnderlined()))
 390             destStyle.SetFontUnderlined(style.GetFontUnderlined());
 391     }
 392
 393     if (style.HasFontFaceName())
 394     {
 395         if (!(compareWith && compareWith->HasFontFaceName() && compareWith->GetFontFaceName() == style.GetFontFaceName()))
 396             destStyle.SetFontFaceName(style.GetFontFaceName());
 397     }
 398
 399     if (style.HasFontEncoding())
 400     {
 401         if (!(compareWith && compareWith->HasFontEncoding() && compareWith->GetFontEncoding() == style.GetFontEncoding()))
 402             destStyle.SetFontEncoding(style.GetFontEncoding());
 403     }
 404
 405     if (style.GetTextColour().Ok() && style.HasTextColour())
 406     {
 407         if (!(compareWith && compareWith->HasTextColour() && compareWith->GetTextColour() == style.GetTextColour()))
 408             destStyle.SetTextColour(style.GetTextColour());
 409     }
 410
 411     if (style.GetBackgroundColour().Ok() && style.HasBackgroundColour())
 412     {
 413         if (!(compareWith && compareWith->HasBackgroundColour() && compareWith->GetBackgroundColour() == style.GetBackgroundColour()))
 414             destStyle.SetBackgroundColour(style.GetBackgroundColour());
 415     }
 416
 417     if (style.HasAlignment())
 418     {
 419         if (!(compareWith && compareWith->HasAlignment() && compareWith->GetAlignment() == style.GetAlignment()))
 420             destStyle.SetAlignment(style.GetAlignment());
 421     }
 422
 423     if (style.HasTabs())
 424     {
 425         if (!(compareWith && compareWith->HasTabs() && TabsEq(compareWith->GetTabs(), style.GetTabs())))
 426             destStyle.SetTabs(style.GetTabs());
 427     }
 428
 429     if (style.HasLeftIndent())
 430     {
 431         if (!(compareWith && compareWith->HasLeftIndent() && compareWith->GetLeftIndent() == style.GetLeftIndent()
 432                           && compareWith->GetLeftSubIndent() == style.GetLeftSubIndent()))
 433             destStyle.SetLeftIndent(style.GetLeftIndent(), style.GetLeftSubIndent());
 434     }
 435
 436     if (style.HasRightIndent())
 437     {
 438         if (!(compareWith && compareWith->HasRightIndent() && compareWith->GetRightIndent() == style.GetRightIndent()))
 439             destStyle.SetRightIndent(style.GetRightIndent());
 440     }
 441
 442     if (style.HasParagraphSpacingAfter())
 443     {
 444         if (!(compareWith && compareWith->HasParagraphSpacingAfter() && compareWith->GetParagraphSpacingAfter() == style.GetParagraphSpacingAfter()))
 445             destStyle.SetParagraphSpacingAfter(style.GetParagraphSpacingAfter());
 446     }
 447
 448     if (style.HasParagraphSpacingBefore())
 449     {
 450         if (!(compareWith && compareWith->HasParagraphSpacingBefore() && compareWith->GetParagraphSpacingBefore() == style.GetParagraphSpacingBefore()))
 451             destStyle.SetParagraphSpacingBefore(style.GetParagraphSpacingBefore());
 452     }
 453
 454     if (style.HasLineSpacing())
 455     {
 456         if (!(compareWith && compareWith->HasLineSpacing() && compareWith->GetLineSpacing() == style.GetLineSpacing()))
 457             destStyle.SetLineSpacing(style.GetLineSpacing());
 458     }
 459
 460     if (style.HasCharacterStyleName())
 461     {
 462         if (!(compareWith && compareWith->HasCharacterStyleName() && compareWith->GetCharacterStyleName() == style.GetCharacterStyleName()))
 463             destStyle.SetCharacterStyleName(style.GetCharacterStyleName());
 464     }
 465
 466     if (style.HasParagraphStyleName())
 467     {
 468         if (!(compareWith && compareWith->HasParagraphStyleName() && compareWith->GetParagraphStyleName() == style.GetParagraphStyleName()))
 469             destStyle.SetParagraphStyleName(style.GetParagraphStyleName());
 470     }
 471
 472     if (style.HasListStyleName())
 473     {
 474         if (!(compareWith && compareWith->HasListStyleName() && compareWith->GetListStyleName() == style.GetListStyleName()))
 475             destStyle.SetListStyleName(style.GetListStyleName());
 476     }
 477
 478     if (style.HasBulletStyle())
 479     {
 480         if (!(compareWith && compareWith->HasBulletStyle() && compareWith->GetBulletStyle() == style.GetBulletStyle()))
 481             destStyle.SetBulletStyle(style.GetBulletStyle());
 482     }
 483
 484     if (style.HasBulletText())
 485     {
 486         if (!(compareWith && compareWith->HasBulletText() && compareWith->GetBulletText() == style.GetBulletText()))
 487         {
 488             destStyle.SetBulletText(style.GetBulletText());
 489             destStyle.SetBulletFont(style.GetBulletFont());
 490         }
 491     }
 492
 493     if (style.HasBulletNumber())
 494     {
 495         if (!(compareWith && compareWith->HasBulletNumber() && compareWith->GetBulletNumber() == style.GetBulletNumber()))
 496             destStyle.SetBulletNumber(style.GetBulletNumber());
 497     }
 498
 499     if (style.HasBulletName())
 500     {
 501         if (!(compareWith && compareWith->HasBulletName() && compareWith->GetBulletName() == style.GetBulletName()))
 502             destStyle.SetBulletName(style.GetBulletName());
 503     }
 504
 505     if (style.HasURL())
 506     {
 507         if (!(compareWith && compareWith->HasURL() && compareWith->GetURL() == style.GetURL()))
 508             destStyle.SetURL(style.GetURL());
 509     }
 510
 511     if (style.HasPageBreak())
 512     {
 513         if (!(compareWith && compareWith->HasPageBreak()))
 514             destStyle.SetPageBreak();
 515     }
 516
 517     if (style.HasTextEffects())
 518     {
 519         if (!(compareWith && compareWith->HasTextEffects() && compareWith->GetTextEffects() == style.GetTextEffects()))
 520         {
 521             int destBits = destStyle.GetTextEffects();
 522             int destFlags = destStyle.GetTextEffectFlags();
 523
 524             int srcBits = style.GetTextEffects();
 525             int srcFlags = style.GetTextEffectFlags();
 526
 527             CombineBitlists(destBits, srcBits, destFlags, srcFlags);
 528
 529             destStyle.SetTextEffects(destBits);
 530             destStyle.SetTextEffectFlags(destFlags);
 531         }
 532     }
 533
 534     if (style.HasOutlineLevel())
 535     {
 536         if (!(compareWith && compareWith->HasOutlineLevel() && compareWith->GetOutlineLevel() == style.GetOutlineLevel()))
 537             destStyle.SetOutlineLevel(style.GetOutlineLevel());
 538     }
 539
 540     return true;
 541 }
 542
 543 /* static */
 544 wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr,
 545                                const wxTextAttr& attrDef,
 546                                const wxTextCtrlBase *text)
 547 {
 548     wxFont font;
 549     if (attr.HasFont())
 550         font = attr.GetFont();
 551
 552     if ( !font.Ok() )
 553     {
 554         if (attrDef.HasFont())
 555             font = attrDef.GetFont();
 556
 557         if ( text && !font.Ok() )
 558             font = text->GetFont();
 559     }
 560
 561     wxColour colFg = attr.GetTextColour();
 562     if ( !colFg.Ok() )
 563     {
 564         colFg = attrDef.GetTextColour();
 565
 566         if ( text && !colFg.Ok() )
 567             colFg = text->GetForegroundColour();
 568     }
 569
 570     wxColour colBg = attr.GetBackgroundColour();
 571     if ( !colBg.Ok() )
 572     {
 573         colBg = attrDef.GetBackgroundColour();
 574
 575         if ( text && !colBg.Ok() )
 576             colBg = text->GetBackgroundColour();
 577     }
 578
 579     wxTextAttr newAttr(colFg, colBg, font);
 580
 581     if (attr.HasAlignment())
 582         newAttr.SetAlignment(attr.GetAlignment());
 583     else if (attrDef.HasAlignment())
 584         newAttr.SetAlignment(attrDef.GetAlignment());
 585
 586     if (attr.HasTabs())
 587         newAttr.SetTabs(attr.GetTabs());
 588     else if (attrDef.HasTabs())
 589         newAttr.SetTabs(attrDef.GetTabs());
 590
 591     if (attr.HasLeftIndent())
 592         newAttr.SetLeftIndent(attr.GetLeftIndent(), attr.GetLeftSubIndent());
 593     else if (attrDef.HasLeftIndent())
 594         newAttr.SetLeftIndent(attrDef.GetLeftIndent(), attr.GetLeftSubIndent());
 595
 596     if (attr.HasRightIndent())
 597         newAttr.SetRightIndent(attr.GetRightIndent());
 598     else if (attrDef.HasRightIndent())
 599         newAttr.SetRightIndent(attrDef.GetRightIndent());
 600
 601     return newAttr;
 602 }
 603
 604 /// Compare tabs
 605 bool wxTextAttr::TabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2)
 606 {
 607     if (tabs1.GetCount() != tabs2.GetCount())
 608         return false;
 609
 610     size_t i;
 611     for (i = 0; i < tabs1.GetCount(); i++)
 612     {
 613         if (tabs1[i] != tabs2[i])
 614             return false;
 615     }
 616     return true;
 617 }
 618
 619 // Remove attributes
 620 bool wxTextAttr::RemoveStyle(wxTextAttr& destStyle, const wxTextAttr& style)
 621 {
 622     int flags = style.GetFlags();
 623     int destFlags = destStyle.GetFlags();
 624
 625     destStyle.SetFlags(destFlags & ~flags);
 626
 627     return true;
 628 }
 629
 630 /// Combine two bitlists, specifying the bits of interest with separate flags.
 631 bool wxTextAttr::CombineBitlists(int& valueA, int valueB, int& flagsA, int flagsB)
 632 {
 633     // We want to apply B's bits to A, taking into account each's flags which indicate which bits
 634     // are to be taken into account. A zero in B's bits should reset that bit in A but only if B's flags
 635     // indicate it.
 636
 637     // First, reset the 0 bits from B. We make a mask so we're only dealing with B's zero
 638     // bits at this point, ignoring any 1 bits in B or 0 bits in B that are not relevant.
 639     int valueA2 = ~(~valueB & flagsB) & valueA;
 640
 641     // Now combine the 1 bits.
 642     int valueA3 = (valueB & flagsB) | valueA2;
 643
 644     valueA = valueA3;
 645     flagsA = (flagsA | flagsB);
 646
 647     return true;
 648 }
 649
 650 /// Compare two bitlists
 651 bool wxTextAttr::BitlistsEqPartial(int valueA, int valueB, int flags)
 652 {
 653     int relevantBitsA = valueA & flags;
 654     int relevantBitsB = valueB & flags;
 655     return (relevantBitsA != relevantBitsB);
 656 }
 657
 658 /// Split into paragraph and character styles
 659 bool wxTextAttr::SplitParaCharStyles(const wxTextAttr& style, wxTextAttr& parStyle, wxTextAttr& charStyle)
 660 {
 661     wxTextAttr defaultCharStyle1(style);
 662     wxTextAttr defaultParaStyle1(style);
 663     defaultCharStyle1.SetFlags(defaultCharStyle1.GetFlags()&wxTEXT_ATTR_CHARACTER);
 664     defaultParaStyle1.SetFlags(defaultParaStyle1.GetFlags()&wxTEXT_ATTR_PARAGRAPH);
 665
 666     charStyle.Apply(defaultCharStyle1);
 667     parStyle.Apply(defaultParaStyle1);
 668
 669     return true;
 670 }
 671
 672 // apply styling to text range
 673 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
 674                               const wxTextAttr& WXUNUSED(style))
 675 {
 676     // to be implemented in derived classes
 677     return false;
 678 }
 679
 680 // get the styling at the given position
 681 bool wxTextCtrlBase::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style))
 682 {
 683     // to be implemented in derived classes
 684     return false;
 685 }
 686
 687 // change default text attributes
 688 bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)
 689 {
 690     // keep the old attributes if the new style doesn't specify them unless the
 691     // new style is empty - then reset m_defaultStyle (as there is no other way
 692     // to do it)
 693     if ( style.IsDefault() )
 694         m_defaultStyle = style;
 695     else
 696         m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this);
 697
 698     return true;
 699 }
 700
 701 // ----------------------------------------------------------------------------
 702 // file IO functions
 703 // ----------------------------------------------------------------------------
 704
 705 bool wxTextCtrlBase::DoLoadFile(const wxString& filename, int WXUNUSED(fileType))
 706 {
 707 #if wxUSE_FFILE
 708     wxFFile file(filename);
 709     if ( file.IsOpened() )
 710     {
 711         wxString text;
 712         if ( file.ReadAll(&text) )
 713         {
 714             SetValue(text);
 715
 716             DiscardEdits();
 717
 718             m_filename = filename;
 719
 720             return true;
 721         }
 722     }
 723
 724     wxLogError(_("File couldn't be loaded."));
 725 #endif // wxUSE_FFILE
 726
 727     return false;
 728 }
 729
 730 bool wxTextAreaBase::SaveFile(const wxString& filename, int fileType)
 731 {
 732     wxString filenameToUse = filename.empty() ? m_filename : filename;
 733     if ( filenameToUse.empty() )
 734     {
 735         // what kind of message to give? is it an error or a program bug?
 736         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 737
 738         return false;
 739     }
 740
 741     return DoSaveFile(filenameToUse, fileType);
 742 }
 743
 744 bool wxTextCtrlBase::DoSaveFile(const wxString& filename, int WXUNUSED(fileType))
 745 {
 746 #if wxUSE_FFILE
 747     wxFFile file(filename, _T("w"));
 748     if ( file.IsOpened() && file.Write(GetValue()) )
 749     {
 750         // if it worked, save for future calls
 751         m_filename = filename;
 752
 753         // it's not modified any longer
 754         DiscardEdits();
 755
 756         return true;
 757     }
 758 #endif // wxUSE_FFILE
 759
 760     wxLogError(_("The text couldn't be saved."));
 761
 762     return false;
 763 }
 764
 765 // ----------------------------------------------------------------------------
 766 // stream-like insertion operator
 767 // ----------------------------------------------------------------------------
 768
 769 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 770 {
 771     AppendText(s);
 772     return *TEXTCTRL(this);
 773 }
 774
 775 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 776 {
 777     return *this << wxString::Format("%.2f", d);
 778 }
 779
 780 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 781 {
 782     return *this << wxString::Format("%d", i);
 783 }
 784
 785 wxTextCtrl& wxTextCtrlBase::operator<<(long l)
 786 {
 787     return *this << wxString::Format("%ld", l);
 788 }
 789
 790 // ----------------------------------------------------------------------------
 791 // streambuf methods implementation
 792 // ----------------------------------------------------------------------------
 793
 794 #if wxHAS_TEXT_WINDOW_STREAM
 795
 796 int wxTextCtrlBase::overflow(int c)
 797 {
 798     AppendText((wxChar)c);
 799
 800     // return something different from EOF
 801     return 0;
 802 }
 803
 804 #endif // wxHAS_TEXT_WINDOW_STREAM
 805
 806 // ----------------------------------------------------------------------------
 807 // emulating key presses
 808 // ----------------------------------------------------------------------------
 809
 810 bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
 811 {
 812     // we have a native implementation for Win32 and so don't need this one
 813 #ifndef __WIN32__
 814     wxChar ch = 0;
 815     int keycode = event.GetKeyCode();
 816     switch ( keycode )
 817     {
 818         case WXK_NUMPAD0:
 819         case WXK_NUMPAD1:
 820         case WXK_NUMPAD2:
 821         case WXK_NUMPAD3:
 822         case WXK_NUMPAD4:
 823         case WXK_NUMPAD5:
 824         case WXK_NUMPAD6:
 825         case WXK_NUMPAD7:
 826         case WXK_NUMPAD8:
 827         case WXK_NUMPAD9:
 828             ch = (wxChar)(_T('0') + keycode - WXK_NUMPAD0);
 829             break;
 830
 831         case WXK_MULTIPLY:
 832         case WXK_NUMPAD_MULTIPLY:
 833             ch = _T('*');
 834             break;
 835
 836         case WXK_ADD:
 837         case WXK_NUMPAD_ADD:
 838             ch = _T('+');
 839             break;
 840
 841         case WXK_SUBTRACT:
 842         case WXK_NUMPAD_SUBTRACT:
 843             ch = _T('-');
 844             break;
 845
 846         case WXK_DECIMAL:
 847         case WXK_NUMPAD_DECIMAL:
 848             ch = _T('.');
 849             break;
 850
 851         case WXK_DIVIDE:
 852         case WXK_NUMPAD_DIVIDE:
 853             ch = _T('/');
 854             break;
 855
 856         case WXK_DELETE:
 857         case WXK_NUMPAD_DELETE:
 858             // delete the character at cursor
 859             {
 860                 const long pos = GetInsertionPoint();
 861                 if ( pos < GetLastPosition() )
 862                     Remove(pos, pos + 1);
 863             }
 864             break;
 865
 866         case WXK_BACK:
 867             // delete the character before the cursor
 868             {
 869                 const long pos = GetInsertionPoint();
 870                 if ( pos > 0 )
 871                     Remove(pos - 1, pos);
 872             }
 873             break;
 874
 875         default:
 876 #if wxUSE_UNICODE
 877             if ( event.GetUnicodeKey() )
 878             {
 879                 ch = event.GetUnicodeKey();
 880             }
 881             else
 882 #endif
 883             if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) )
 884             {
 885                 // FIXME this is not going to work for non letters...
 886                 if ( !event.ShiftDown() )
 887                 {
 888                     keycode = wxTolower(keycode);
 889                 }
 890
 891                 ch = (wxChar)keycode;
 892             }
 893             else
 894             {
 895                 ch = _T('\0');
 896             }
 897     }
 898
 899     if ( ch )
 900     {
 901         WriteText(ch);
 902
 903         return true;
 904     }
 905 #else // __WIN32__
 906     wxUnusedVar(event);
 907 #endif // !__WIN32__/__WIN32__
 908
 909     return false;
 910 }
 911
 912 // do the window-specific processing after processing the update event
 913 void wxTextCtrlBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 914 {
 915     // call inherited, but skip the wxControl's version, and call directly the
 916     // wxWindow's one instead, because the only reason why we are overriding this
 917     // function is that we want to use SetValue() instead of wxControl::SetLabel()
 918     wxWindowBase::DoUpdateWindowUI(event);
 919
 920     // update text
 921     if ( event.GetSetText() )
 922     {
 923         if ( event.GetText() != GetValue() )
 924             SetValue(event.GetText());
 925     }
 926 }
 927
 928 // ----------------------------------------------------------------------------
 929 // hit testing
 930 // ----------------------------------------------------------------------------
 931
 932 wxTextCtrlHitTestResult
 933 wxTextAreaBase::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
 934 {
 935     // implement in terms of the other overload as the native ports typically
 936     // can get the position and not (x, y) pair directly (although wxUniv
 937     // directly gets x and y -- and so overrides this method as well)
 938     long pos;
 939     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
 940
 941     if ( rc != wxTE_HT_UNKNOWN )
 942     {
 943         PositionToXY(pos, x, y);
 944     }
 945
 946     return rc;
 947 }
 948
 949 wxTextCtrlHitTestResult
 950 wxTextAreaBase::HitTest(const wxPoint& WXUNUSED(pt), long * WXUNUSED(pos)) const
 951 {
 952     // not implemented
 953     return wxTE_HT_UNKNOWN;
 954 }
 955
 956 // ----------------------------------------------------------------------------
 957 // events
 958 // ----------------------------------------------------------------------------
 959
 960 /* static */
 961 bool wxTextCtrlBase::SendTextUpdatedEvent(wxWindow *win)
 962 {
 963     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, win->GetId());
 964
 965     // do not do this as it could be very inefficient if the text control
 966     // contains a lot of text and we're not using ref-counted wxString
 967     // implementation -- instead, event.GetString() will query the control for
 968     // its current text if needed
 969     //event.SetString(win->GetValue());
 970
 971     event.SetEventObject(win);
 972     return win->GetEventHandler()->ProcessEvent(event);
 973 }
 974
 975 #else // !wxUSE_TEXTCTRL
 976
 977 // define this one even if !wxUSE_TEXTCTRL because it is also used by other
 978 // controls (wxComboBox and wxSpinCtrl)
 979
 980 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
 981
 982 #endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL