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 // Resets bits in destination so new attributes aren't merged with mutually exclusive ones
 366 static bool wxResetIncompatibleBits(const int mask, const int srcFlags, int& destFlags, int& destBits)
 367 {
 368     if ((srcFlags & mask) && (destFlags & mask))
 369     {
 370         destBits &= ~mask;
 371         destFlags &= ~mask;
 372     }
 373
 374     return true;
 375 }
 376
 377 bool wxTextAttr::Apply(const wxTextAttr& style, const wxTextAttr* compareWith)
 378 {
 379     wxTextAttr& destStyle = (*this);
 380
 381     if (style.HasFontWeight())
 382     {
 383         if (!(compareWith && compareWith->HasFontWeight() && compareWith->GetFontWeight() == style.GetFontWeight()))
 384             destStyle.SetFontWeight(style.GetFontWeight());
 385     }
 386
 387     if (style.HasFontSize())
 388     {
 389         if (!(compareWith && compareWith->HasFontSize() && compareWith->GetFontSize() == style.GetFontSize()))
 390             destStyle.SetFontSize(style.GetFontSize());
 391     }
 392
 393     if (style.HasFontItalic())
 394     {
 395         if (!(compareWith && compareWith->HasFontItalic() && compareWith->GetFontStyle() == style.GetFontStyle()))
 396             destStyle.SetFontStyle(style.GetFontStyle());
 397     }
 398
 399     if (style.HasFontUnderlined())
 400     {
 401         if (!(compareWith && compareWith->HasFontUnderlined() && compareWith->GetFontUnderlined() == style.GetFontUnderlined()))
 402             destStyle.SetFontUnderlined(style.GetFontUnderlined());
 403     }
 404
 405     if (style.HasFontFaceName())
 406     {
 407         if (!(compareWith && compareWith->HasFontFaceName() && compareWith->GetFontFaceName() == style.GetFontFaceName()))
 408             destStyle.SetFontFaceName(style.GetFontFaceName());
 409     }
 410
 411     if (style.HasFontEncoding())
 412     {
 413         if (!(compareWith && compareWith->HasFontEncoding() && compareWith->GetFontEncoding() == style.GetFontEncoding()))
 414             destStyle.SetFontEncoding(style.GetFontEncoding());
 415     }
 416
 417     if (style.GetTextColour().Ok() && style.HasTextColour())
 418     {
 419         if (!(compareWith && compareWith->HasTextColour() && compareWith->GetTextColour() == style.GetTextColour()))
 420             destStyle.SetTextColour(style.GetTextColour());
 421     }
 422
 423     if (style.GetBackgroundColour().Ok() && style.HasBackgroundColour())
 424     {
 425         if (!(compareWith && compareWith->HasBackgroundColour() && compareWith->GetBackgroundColour() == style.GetBackgroundColour()))
 426             destStyle.SetBackgroundColour(style.GetBackgroundColour());
 427     }
 428
 429     if (style.HasAlignment())
 430     {
 431         if (!(compareWith && compareWith->HasAlignment() && compareWith->GetAlignment() == style.GetAlignment()))
 432             destStyle.SetAlignment(style.GetAlignment());
 433     }
 434
 435     if (style.HasTabs())
 436     {
 437         if (!(compareWith && compareWith->HasTabs() && TabsEq(compareWith->GetTabs(), style.GetTabs())))
 438             destStyle.SetTabs(style.GetTabs());
 439     }
 440
 441     if (style.HasLeftIndent())
 442     {
 443         if (!(compareWith && compareWith->HasLeftIndent() && compareWith->GetLeftIndent() == style.GetLeftIndent()
 444                           && compareWith->GetLeftSubIndent() == style.GetLeftSubIndent()))
 445             destStyle.SetLeftIndent(style.GetLeftIndent(), style.GetLeftSubIndent());
 446     }
 447
 448     if (style.HasRightIndent())
 449     {
 450         if (!(compareWith && compareWith->HasRightIndent() && compareWith->GetRightIndent() == style.GetRightIndent()))
 451             destStyle.SetRightIndent(style.GetRightIndent());
 452     }
 453
 454     if (style.HasParagraphSpacingAfter())
 455     {
 456         if (!(compareWith && compareWith->HasParagraphSpacingAfter() && compareWith->GetParagraphSpacingAfter() == style.GetParagraphSpacingAfter()))
 457             destStyle.SetParagraphSpacingAfter(style.GetParagraphSpacingAfter());
 458     }
 459
 460     if (style.HasParagraphSpacingBefore())
 461     {
 462         if (!(compareWith && compareWith->HasParagraphSpacingBefore() && compareWith->GetParagraphSpacingBefore() == style.GetParagraphSpacingBefore()))
 463             destStyle.SetParagraphSpacingBefore(style.GetParagraphSpacingBefore());
 464     }
 465
 466     if (style.HasLineSpacing())
 467     {
 468         if (!(compareWith && compareWith->HasLineSpacing() && compareWith->GetLineSpacing() == style.GetLineSpacing()))
 469             destStyle.SetLineSpacing(style.GetLineSpacing());
 470     }
 471
 472     if (style.HasCharacterStyleName())
 473     {
 474         if (!(compareWith && compareWith->HasCharacterStyleName() && compareWith->GetCharacterStyleName() == style.GetCharacterStyleName()))
 475             destStyle.SetCharacterStyleName(style.GetCharacterStyleName());
 476     }
 477
 478     if (style.HasParagraphStyleName())
 479     {
 480         if (!(compareWith && compareWith->HasParagraphStyleName() && compareWith->GetParagraphStyleName() == style.GetParagraphStyleName()))
 481             destStyle.SetParagraphStyleName(style.GetParagraphStyleName());
 482     }
 483
 484     if (style.HasListStyleName())
 485     {
 486         if (!(compareWith && compareWith->HasListStyleName() && compareWith->GetListStyleName() == style.GetListStyleName()))
 487             destStyle.SetListStyleName(style.GetListStyleName());
 488     }
 489
 490     if (style.HasBulletStyle())
 491     {
 492         if (!(compareWith && compareWith->HasBulletStyle() && compareWith->GetBulletStyle() == style.GetBulletStyle()))
 493             destStyle.SetBulletStyle(style.GetBulletStyle());
 494     }
 495
 496     if (style.HasBulletText())
 497     {
 498         if (!(compareWith && compareWith->HasBulletText() && compareWith->GetBulletText() == style.GetBulletText()))
 499         {
 500             destStyle.SetBulletText(style.GetBulletText());
 501             destStyle.SetBulletFont(style.GetBulletFont());
 502         }
 503     }
 504
 505     if (style.HasBulletNumber())
 506     {
 507         if (!(compareWith && compareWith->HasBulletNumber() && compareWith->GetBulletNumber() == style.GetBulletNumber()))
 508             destStyle.SetBulletNumber(style.GetBulletNumber());
 509     }
 510
 511     if (style.HasBulletName())
 512     {
 513         if (!(compareWith && compareWith->HasBulletName() && compareWith->GetBulletName() == style.GetBulletName()))
 514             destStyle.SetBulletName(style.GetBulletName());
 515     }
 516
 517     if (style.HasURL())
 518     {
 519         if (!(compareWith && compareWith->HasURL() && compareWith->GetURL() == style.GetURL()))
 520             destStyle.SetURL(style.GetURL());
 521     }
 522
 523     if (style.HasPageBreak())
 524     {
 525         if (!(compareWith && compareWith->HasPageBreak()))
 526             destStyle.SetPageBreak();
 527     }
 528
 529     if (style.HasTextEffects())
 530     {
 531         if (!(compareWith && compareWith->HasTextEffects() && compareWith->GetTextEffects() == style.GetTextEffects()))
 532         {
 533             int destBits = destStyle.GetTextEffects();
 534             int destFlags = destStyle.GetTextEffectFlags();
 535
 536             int srcBits = style.GetTextEffects();
 537             int srcFlags = style.GetTextEffectFlags();
 538
 539             // Reset incompatible bits in the destination
 540             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_SUPERSCRIPT|wxTEXT_ATTR_EFFECT_SUBSCRIPT), srcFlags, destFlags, destBits);
 541             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_CAPITALS|wxTEXT_ATTR_EFFECT_SMALL_CAPITALS), srcFlags, destFlags, destBits);
 542             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_STRIKETHROUGH|wxTEXT_ATTR_EFFECT_DOUBLE_STRIKETHROUGH), srcFlags, destFlags, destBits);
 543
 544             CombineBitlists(destBits, srcBits, destFlags, srcFlags);
 545
 546             destStyle.SetTextEffects(destBits);
 547             destStyle.SetTextEffectFlags(destFlags);
 548         }
 549     }
 550
 551     if (style.HasOutlineLevel())
 552     {
 553         if (!(compareWith && compareWith->HasOutlineLevel() && compareWith->GetOutlineLevel() == style.GetOutlineLevel()))
 554             destStyle.SetOutlineLevel(style.GetOutlineLevel());
 555     }
 556
 557     return true;
 558 }
 559
 560 /* static */
 561 wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr,
 562                                const wxTextAttr& attrDef,
 563                                const wxTextCtrlBase *text)
 564 {
 565     wxFont font;
 566     if (attr.HasFont())
 567         font = attr.GetFont();
 568
 569     if ( !font.Ok() )
 570     {
 571         if (attrDef.HasFont())
 572             font = attrDef.GetFont();
 573
 574         if ( text && !font.Ok() )
 575             font = text->GetFont();
 576     }
 577
 578     wxColour colFg = attr.GetTextColour();
 579     if ( !colFg.Ok() )
 580     {
 581         colFg = attrDef.GetTextColour();
 582
 583         if ( text && !colFg.Ok() )
 584             colFg = text->GetForegroundColour();
 585     }
 586
 587     wxColour colBg = attr.GetBackgroundColour();
 588     if ( !colBg.Ok() )
 589     {
 590         colBg = attrDef.GetBackgroundColour();
 591
 592         if ( text && !colBg.Ok() )
 593             colBg = text->GetBackgroundColour();
 594     }
 595
 596     wxTextAttr newAttr(colFg, colBg, font);
 597
 598     if (attr.HasAlignment())
 599         newAttr.SetAlignment(attr.GetAlignment());
 600     else if (attrDef.HasAlignment())
 601         newAttr.SetAlignment(attrDef.GetAlignment());
 602
 603     if (attr.HasTabs())
 604         newAttr.SetTabs(attr.GetTabs());
 605     else if (attrDef.HasTabs())
 606         newAttr.SetTabs(attrDef.GetTabs());
 607
 608     if (attr.HasLeftIndent())
 609         newAttr.SetLeftIndent(attr.GetLeftIndent(), attr.GetLeftSubIndent());
 610     else if (attrDef.HasLeftIndent())
 611         newAttr.SetLeftIndent(attrDef.GetLeftIndent(), attr.GetLeftSubIndent());
 612
 613     if (attr.HasRightIndent())
 614         newAttr.SetRightIndent(attr.GetRightIndent());
 615     else if (attrDef.HasRightIndent())
 616         newAttr.SetRightIndent(attrDef.GetRightIndent());
 617
 618     return newAttr;
 619 }
 620
 621 /// Compare tabs
 622 bool wxTextAttr::TabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2)
 623 {
 624     if (tabs1.GetCount() != tabs2.GetCount())
 625         return false;
 626
 627     size_t i;
 628     for (i = 0; i < tabs1.GetCount(); i++)
 629     {
 630         if (tabs1[i] != tabs2[i])
 631             return false;
 632     }
 633     return true;
 634 }
 635
 636 // Remove attributes
 637 bool wxTextAttr::RemoveStyle(wxTextAttr& destStyle, const wxTextAttr& style)
 638 {
 639     int flags = style.GetFlags();
 640     int destFlags = destStyle.GetFlags();
 641
 642     destStyle.SetFlags(destFlags & ~flags);
 643
 644     return true;
 645 }
 646
 647 /// Combine two bitlists, specifying the bits of interest with separate flags.
 648 bool wxTextAttr::CombineBitlists(int& valueA, int valueB, int& flagsA, int flagsB)
 649 {
 650     // We want to apply B's bits to A, taking into account each's flags which indicate which bits
 651     // are to be taken into account. A zero in B's bits should reset that bit in A but only if B's flags
 652     // indicate it.
 653
 654     // First, reset the 0 bits from B. We make a mask so we're only dealing with B's zero
 655     // bits at this point, ignoring any 1 bits in B or 0 bits in B that are not relevant.
 656     int valueA2 = ~(~valueB & flagsB) & valueA;
 657
 658     // Now combine the 1 bits.
 659     int valueA3 = (valueB & flagsB) | valueA2;
 660
 661     valueA = valueA3;
 662     flagsA = (flagsA | flagsB);
 663
 664     return true;
 665 }
 666
 667 /// Compare two bitlists
 668 bool wxTextAttr::BitlistsEqPartial(int valueA, int valueB, int flags)
 669 {
 670     int relevantBitsA = valueA & flags;
 671     int relevantBitsB = valueB & flags;
 672     return (relevantBitsA != relevantBitsB);
 673 }
 674
 675 /// Split into paragraph and character styles
 676 bool wxTextAttr::SplitParaCharStyles(const wxTextAttr& style, wxTextAttr& parStyle, wxTextAttr& charStyle)
 677 {
 678     wxTextAttr defaultCharStyle1(style);
 679     wxTextAttr defaultParaStyle1(style);
 680     defaultCharStyle1.SetFlags(defaultCharStyle1.GetFlags()&wxTEXT_ATTR_CHARACTER);
 681     defaultParaStyle1.SetFlags(defaultParaStyle1.GetFlags()&wxTEXT_ATTR_PARAGRAPH);
 682
 683     charStyle.Apply(defaultCharStyle1);
 684     parStyle.Apply(defaultParaStyle1);
 685
 686     return true;
 687 }
 688
 689 // apply styling to text range
 690 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
 691                               const wxTextAttr& WXUNUSED(style))
 692 {
 693     // to be implemented in derived classes
 694     return false;
 695 }
 696
 697 // get the styling at the given position
 698 bool wxTextCtrlBase::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style))
 699 {
 700     // to be implemented in derived classes
 701     return false;
 702 }
 703
 704 // change default text attributes
 705 bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)
 706 {
 707     // keep the old attributes if the new style doesn't specify them unless the
 708     // new style is empty - then reset m_defaultStyle (as there is no other way
 709     // to do it)
 710     if ( style.IsDefault() )
 711         m_defaultStyle = style;
 712     else
 713         m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this);
 714
 715     return true;
 716 }
 717
 718 // ----------------------------------------------------------------------------
 719 // file IO functions
 720 // ----------------------------------------------------------------------------
 721
 722 bool wxTextCtrlBase::DoLoadFile(const wxString& filename, int WXUNUSED(fileType))
 723 {
 724 #if wxUSE_FFILE
 725     wxFFile file(filename);
 726     if ( file.IsOpened() )
 727     {
 728         wxString text;
 729         if ( file.ReadAll(&text) )
 730         {
 731             SetValue(text);
 732
 733             DiscardEdits();
 734
 735             m_filename = filename;
 736
 737             return true;
 738         }
 739     }
 740
 741     wxLogError(_("File couldn't be loaded."));
 742 #endif // wxUSE_FFILE
 743
 744     return false;
 745 }
 746
 747 bool wxTextAreaBase::SaveFile(const wxString& filename, int fileType)
 748 {
 749     wxString filenameToUse = filename.empty() ? m_filename : filename;
 750     if ( filenameToUse.empty() )
 751     {
 752         // what kind of message to give? is it an error or a program bug?
 753         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 754
 755         return false;
 756     }
 757
 758     return DoSaveFile(filenameToUse, fileType);
 759 }
 760
 761 bool wxTextCtrlBase::DoSaveFile(const wxString& filename, int WXUNUSED(fileType))
 762 {
 763 #if wxUSE_FFILE
 764     wxFFile file(filename, _T("w"));
 765     if ( file.IsOpened() && file.Write(GetValue()) )
 766     {
 767         // if it worked, save for future calls
 768         m_filename = filename;
 769
 770         // it's not modified any longer
 771         DiscardEdits();
 772
 773         return true;
 774     }
 775 #endif // wxUSE_FFILE
 776
 777     wxLogError(_("The text couldn't be saved."));
 778
 779     return false;
 780 }
 781
 782 // ----------------------------------------------------------------------------
 783 // stream-like insertion operator
 784 // ----------------------------------------------------------------------------
 785
 786 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 787 {
 788     AppendText(s);
 789     return *TEXTCTRL(this);
 790 }
 791
 792 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 793 {
 794     return *this << wxString::Format("%.2f", d);
 795 }
 796
 797 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 798 {
 799     return *this << wxString::Format("%d", i);
 800 }
 801
 802 wxTextCtrl& wxTextCtrlBase::operator<<(long l)
 803 {
 804     return *this << wxString::Format("%ld", l);
 805 }
 806
 807 // ----------------------------------------------------------------------------
 808 // streambuf methods implementation
 809 // ----------------------------------------------------------------------------
 810
 811 #if wxHAS_TEXT_WINDOW_STREAM
 812
 813 int wxTextCtrlBase::overflow(int c)
 814 {
 815     AppendText((wxChar)c);
 816
 817     // return something different from EOF
 818     return 0;
 819 }
 820
 821 #endif // wxHAS_TEXT_WINDOW_STREAM
 822
 823 // ----------------------------------------------------------------------------
 824 // emulating key presses
 825 // ----------------------------------------------------------------------------
 826
 827 bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
 828 {
 829     // we have a native implementation for Win32 and so don't need this one
 830 #ifndef __WIN32__
 831     wxChar ch = 0;
 832     int keycode = event.GetKeyCode();
 833     switch ( keycode )
 834     {
 835         case WXK_NUMPAD0:
 836         case WXK_NUMPAD1:
 837         case WXK_NUMPAD2:
 838         case WXK_NUMPAD3:
 839         case WXK_NUMPAD4:
 840         case WXK_NUMPAD5:
 841         case WXK_NUMPAD6:
 842         case WXK_NUMPAD7:
 843         case WXK_NUMPAD8:
 844         case WXK_NUMPAD9:
 845             ch = (wxChar)(_T('0') + keycode - WXK_NUMPAD0);
 846             break;
 847
 848         case WXK_MULTIPLY:
 849         case WXK_NUMPAD_MULTIPLY:
 850             ch = _T('*');
 851             break;
 852
 853         case WXK_ADD:
 854         case WXK_NUMPAD_ADD:
 855             ch = _T('+');
 856             break;
 857
 858         case WXK_SUBTRACT:
 859         case WXK_NUMPAD_SUBTRACT:
 860             ch = _T('-');
 861             break;
 862
 863         case WXK_DECIMAL:
 864         case WXK_NUMPAD_DECIMAL:
 865             ch = _T('.');
 866             break;
 867
 868         case WXK_DIVIDE:
 869         case WXK_NUMPAD_DIVIDE:
 870             ch = _T('/');
 871             break;
 872
 873         case WXK_DELETE:
 874         case WXK_NUMPAD_DELETE:
 875             // delete the character at cursor
 876             {
 877                 const long pos = GetInsertionPoint();
 878                 if ( pos < GetLastPosition() )
 879                     Remove(pos, pos + 1);
 880             }
 881             break;
 882
 883         case WXK_BACK:
 884             // delete the character before the cursor
 885             {
 886                 const long pos = GetInsertionPoint();
 887                 if ( pos > 0 )
 888                     Remove(pos - 1, pos);
 889             }
 890             break;
 891
 892         default:
 893 #if wxUSE_UNICODE
 894             if ( event.GetUnicodeKey() )
 895             {
 896                 ch = event.GetUnicodeKey();
 897             }
 898             else
 899 #endif
 900             if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) )
 901             {
 902                 // FIXME this is not going to work for non letters...
 903                 if ( !event.ShiftDown() )
 904                 {
 905                     keycode = wxTolower(keycode);
 906                 }
 907
 908                 ch = (wxChar)keycode;
 909             }
 910             else
 911             {
 912                 ch = _T('\0');
 913             }
 914     }
 915
 916     if ( ch )
 917     {
 918         WriteText(ch);
 919
 920         return true;
 921     }
 922 #else // __WIN32__
 923     wxUnusedVar(event);
 924 #endif // !__WIN32__/__WIN32__
 925
 926     return false;
 927 }
 928
 929 // do the window-specific processing after processing the update event
 930 void wxTextCtrlBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 931 {
 932     // call inherited, but skip the wxControl's version, and call directly the
 933     // wxWindow's one instead, because the only reason why we are overriding this
 934     // function is that we want to use SetValue() instead of wxControl::SetLabel()
 935     wxWindowBase::DoUpdateWindowUI(event);
 936
 937     // update text
 938     if ( event.GetSetText() )
 939     {
 940         if ( event.GetText() != GetValue() )
 941             SetValue(event.GetText());
 942     }
 943 }
 944
 945 // ----------------------------------------------------------------------------
 946 // hit testing
 947 // ----------------------------------------------------------------------------
 948
 949 wxTextCtrlHitTestResult
 950 wxTextAreaBase::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
 951 {
 952     // implement in terms of the other overload as the native ports typically
 953     // can get the position and not (x, y) pair directly (although wxUniv
 954     // directly gets x and y -- and so overrides this method as well)
 955     long pos;
 956     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
 957
 958     if ( rc != wxTE_HT_UNKNOWN )
 959     {
 960         PositionToXY(pos, x, y);
 961     }
 962
 963     return rc;
 964 }
 965
 966 wxTextCtrlHitTestResult
 967 wxTextAreaBase::HitTest(const wxPoint& WXUNUSED(pt), long * WXUNUSED(pos)) const
 968 {
 969     // not implemented
 970     return wxTE_HT_UNKNOWN;
 971 }
 972
 973 // ----------------------------------------------------------------------------
 974 // events
 975 // ----------------------------------------------------------------------------
 976
 977 /* static */
 978 bool wxTextCtrlBase::SendTextUpdatedEvent(wxWindow *win)
 979 {
 980     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, win->GetId());
 981
 982     // do not do this as it could be very inefficient if the text control
 983     // contains a lot of text and we're not using ref-counted wxString
 984     // implementation -- instead, event.GetString() will query the control for
 985     // its current text if needed
 986     //event.SetString(win->GetValue());
 987
 988     event.SetEventObject(win);
 989     return win->GetEventHandler()->ProcessEvent(event);
 990 }
 991
 992 #else // !wxUSE_TEXTCTRL
 993
 994 // define this one even if !wxUSE_TEXTCTRL because it is also used by other
 995 // controls (wxComboBox and wxSpinCtrl)
 996
 997 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TEXT_UPDATED)
 998
 999 #endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL