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 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_UPDATED, wxCommandEvent );
  53 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_ENTER, wxCommandEvent );
  54 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_URL, wxTextUrlEvent );
  55 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_MAXLEN, wxCommandEvent );
  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 = wxFONTSTYLE_NORMAL;
  89     m_fontWeight = wxFONTWEIGHT_NORMAL;
  90     m_fontUnderlined = false;
  91     m_fontEncoding = wxFONTENCODING_DEFAULT;
  92     m_fontFamily = wxFONTFAMILY_DEFAULT;
  93
  94     m_paragraphSpacingAfter = 0;
  95     m_paragraphSpacingBefore = 0;
  96     m_lineSpacing = 0;
  97     m_bulletStyle = wxTEXT_ATTR_BULLET_STYLE_NONE;
  98     m_textEffects = wxTEXT_ATTR_EFFECT_NONE;
  99     m_textEffectFlags = wxTEXT_ATTR_EFFECT_NONE;
 100     m_outlineLevel = 0;
 101     m_bulletNumber = 0;
 102 }
 103
 104 // Copy
 105 void wxTextAttr::Copy(const wxTextAttr& attr)
 106 {
 107     m_colText = attr.m_colText;
 108     m_colBack = attr.m_colBack;
 109     m_textAlignment = attr.m_textAlignment;
 110     m_leftIndent = attr.m_leftIndent;
 111     m_leftSubIndent = attr.m_leftSubIndent;
 112     m_rightIndent = attr.m_rightIndent;
 113     m_tabs = attr.m_tabs;
 114     m_flags = attr.m_flags;
 115
 116     m_fontSize = attr.m_fontSize;
 117     m_fontStyle = attr.m_fontStyle;
 118     m_fontWeight = attr.m_fontWeight;
 119     m_fontUnderlined = attr.m_fontUnderlined;
 120     m_fontFaceName = attr.m_fontFaceName;
 121     m_fontEncoding = attr.m_fontEncoding;
 122     m_fontFamily = attr.m_fontFamily;
 123     m_textEffects = attr.m_textEffects;
 124     m_textEffectFlags = attr.m_textEffectFlags;
 125
 126     m_paragraphSpacingAfter = attr.m_paragraphSpacingAfter;
 127     m_paragraphSpacingBefore = attr.m_paragraphSpacingBefore;
 128     m_lineSpacing = attr.m_lineSpacing;
 129     m_characterStyleName = attr.m_characterStyleName;
 130     m_paragraphStyleName = attr.m_paragraphStyleName;
 131     m_listStyleName = attr.m_listStyleName;
 132     m_bulletStyle = attr.m_bulletStyle;
 133     m_bulletNumber = attr.m_bulletNumber;
 134     m_bulletText = attr.m_bulletText;
 135     m_bulletFont = attr.m_bulletFont;
 136     m_bulletName = attr.m_bulletName;
 137     m_outlineLevel = attr.m_outlineLevel;
 138
 139     m_urlTarget = attr.m_urlTarget;
 140 }
 141
 142 // operators
 143 void wxTextAttr::operator= (const wxTextAttr& attr)
 144 {
 145     Copy(attr);
 146 }
 147
 148 // Equality test
 149 bool wxTextAttr::operator== (const wxTextAttr& attr) const
 150 {
 151     return  GetFlags() == attr.GetFlags() &&
 152
 153             GetTextColour() == attr.GetTextColour() &&
 154             GetBackgroundColour() == attr.GetBackgroundColour() &&
 155
 156             GetAlignment() == attr.GetAlignment() &&
 157             GetLeftIndent() == attr.GetLeftIndent() &&
 158             GetLeftSubIndent() == attr.GetLeftSubIndent() &&
 159             GetRightIndent() == attr.GetRightIndent() &&
 160             TabsEq(GetTabs(), attr.GetTabs()) &&
 161
 162             GetParagraphSpacingAfter() == attr.GetParagraphSpacingAfter() &&
 163             GetParagraphSpacingBefore() == attr.GetParagraphSpacingBefore() &&
 164             GetLineSpacing() == attr.GetLineSpacing() &&
 165             GetCharacterStyleName() == attr.GetCharacterStyleName() &&
 166             GetParagraphStyleName() == attr.GetParagraphStyleName() &&
 167             GetListStyleName() == attr.GetListStyleName() &&
 168
 169             GetBulletStyle() == attr.GetBulletStyle() &&
 170             GetBulletText() == attr.GetBulletText() &&
 171             GetBulletNumber() == attr.GetBulletNumber() &&
 172             GetBulletFont() == attr.GetBulletFont() &&
 173             GetBulletName() == attr.GetBulletName() &&
 174
 175             GetTextEffects() == attr.GetTextEffects() &&
 176             GetTextEffectFlags() == attr.GetTextEffectFlags() &&
 177
 178             GetOutlineLevel() == attr.GetOutlineLevel() &&
 179
 180             GetFontSize() == attr.GetFontSize() &&
 181             GetFontStyle() == attr.GetFontStyle() &&
 182             GetFontWeight() == attr.GetFontWeight() &&
 183             GetFontUnderlined() == attr.GetFontUnderlined() &&
 184             GetFontFaceName() == attr.GetFontFaceName() &&
 185             GetFontEncoding() == attr.GetFontEncoding() &&
 186             GetFontFamily() == attr.GetFontFamily() &&
 187
 188             GetURL() == attr.GetURL();
 189 }
 190
 191 // Partial equality test taking flags into account
 192 bool wxTextAttr::EqPartial(const wxTextAttr& attr, int flags) const
 193 {
 194     if ((flags & wxTEXT_ATTR_TEXT_COLOUR) && GetTextColour() != attr.GetTextColour())
 195         return false;
 196
 197     if ((flags & wxTEXT_ATTR_BACKGROUND_COLOUR) && GetBackgroundColour() != attr.GetBackgroundColour())
 198         return false;
 199
 200     if ((flags & wxTEXT_ATTR_FONT_FACE) &&
 201         GetFontFaceName() != attr.GetFontFaceName())
 202         return false;
 203
 204     if ((flags & wxTEXT_ATTR_FONT_SIZE) &&
 205         GetFontSize() != attr.GetFontSize())
 206         return false;
 207
 208     if ((flags & wxTEXT_ATTR_FONT_WEIGHT) &&
 209         GetFontWeight() != attr.GetFontWeight())
 210         return false;
 211
 212     if ((flags & wxTEXT_ATTR_FONT_ITALIC) &&
 213         GetFontStyle() != attr.GetFontStyle())
 214         return false;
 215
 216     if ((flags & wxTEXT_ATTR_FONT_UNDERLINE) &&
 217         GetFontUnderlined() != attr.GetFontUnderlined())
 218         return false;
 219
 220     if ((flags & wxTEXT_ATTR_FONT_ENCODING) &&
 221         GetFontEncoding() != attr.GetFontEncoding())
 222         return false;
 223
 224     if ((flags & wxTEXT_ATTR_FONT_FAMILY) &&
 225         GetFontFamily() != attr.GetFontFamily())
 226         return false;
 227
 228     if ((flags & wxTEXT_ATTR_URL) && GetURL() != attr.GetURL())
 229         return false;
 230
 231     if ((flags & wxTEXT_ATTR_ALIGNMENT) && GetAlignment() != attr.GetAlignment())
 232         return false;
 233
 234     if ((flags & wxTEXT_ATTR_LEFT_INDENT) &&
 235         ((GetLeftIndent() != attr.GetLeftIndent()) || (GetLeftSubIndent() != attr.GetLeftSubIndent())))
 236         return false;
 237
 238     if ((flags & wxTEXT_ATTR_RIGHT_INDENT) &&
 239         (GetRightIndent() != attr.GetRightIndent()))
 240         return false;
 241
 242     if ((flags & wxTEXT_ATTR_PARA_SPACING_AFTER) &&
 243         (GetParagraphSpacingAfter() != attr.GetParagraphSpacingAfter()))
 244         return false;
 245
 246     if ((flags & wxTEXT_ATTR_PARA_SPACING_BEFORE) &&
 247         (GetParagraphSpacingBefore() != attr.GetParagraphSpacingBefore()))
 248         return false;
 249
 250     if ((flags & wxTEXT_ATTR_LINE_SPACING) &&
 251         (GetLineSpacing() != attr.GetLineSpacing()))
 252         return false;
 253
 254     if ((flags & wxTEXT_ATTR_CHARACTER_STYLE_NAME) &&
 255         (GetCharacterStyleName() != attr.GetCharacterStyleName()))
 256         return false;
 257
 258     if ((flags & wxTEXT_ATTR_PARAGRAPH_STYLE_NAME) &&
 259         (GetParagraphStyleName() != attr.GetParagraphStyleName()))
 260         return false;
 261
 262     if ((flags & wxTEXT_ATTR_LIST_STYLE_NAME) &&
 263         (GetListStyleName() != attr.GetListStyleName()))
 264         return false;
 265
 266     if ((flags & wxTEXT_ATTR_BULLET_STYLE) &&
 267         (GetBulletStyle() != attr.GetBulletStyle()))
 268          return false;
 269
 270     if ((flags & wxTEXT_ATTR_BULLET_NUMBER) &&
 271         (GetBulletNumber() != attr.GetBulletNumber()))
 272          return false;
 273
 274     if ((flags & wxTEXT_ATTR_BULLET_TEXT) &&
 275         (GetBulletText() != attr.GetBulletText()) &&
 276         (GetBulletFont() != attr.GetBulletFont()))
 277          return false;
 278
 279     if ((flags & wxTEXT_ATTR_BULLET_NAME) &&
 280         (GetBulletName() != attr.GetBulletName()))
 281          return false;
 282
 283     if ((flags & wxTEXT_ATTR_TABS) &&
 284         !TabsEq(GetTabs(), attr.GetTabs()))
 285         return false;
 286
 287     if ((flags & wxTEXT_ATTR_PAGE_BREAK) &&
 288         (HasPageBreak() != attr.HasPageBreak()))
 289          return false;
 290
 291     if (flags & wxTEXT_ATTR_EFFECTS)
 292     {
 293         if (HasTextEffects() != attr.HasTextEffects())
 294             return false;
 295         if (!BitlistsEqPartial(GetTextEffects(), attr.GetTextEffects(), attr.GetTextEffectFlags()))
 296             return false;
 297     }
 298
 299     if ((flags & wxTEXT_ATTR_OUTLINE_LEVEL) &&
 300         (GetOutlineLevel() != attr.GetOutlineLevel()))
 301          return false;
 302
 303     return true;
 304 }
 305
 306 // Create font from font attributes.
 307 wxFont wxTextAttr::GetFont() const
 308 {
 309     if ( !HasFont() )
 310         return wxNullFont;
 311
 312     int fontSize = 10;
 313     if (HasFontSize())
 314         fontSize = GetFontSize();
 315
 316     int fontStyle = wxNORMAL;
 317     if (HasFontItalic())
 318         fontStyle = GetFontStyle();
 319
 320     int fontWeight = wxNORMAL;
 321     if (HasFontWeight())
 322         fontWeight = GetFontWeight();
 323
 324     bool underlined = false;
 325     if (HasFontUnderlined())
 326         underlined = GetFontUnderlined();
 327
 328     wxString fontFaceName;
 329     if (HasFontFaceName())
 330         fontFaceName = GetFontFaceName();
 331
 332     wxFontEncoding encoding = wxFONTENCODING_DEFAULT;
 333     if (HasFontEncoding())
 334         encoding = GetFontEncoding();
 335
 336     int fontFamily = wxFONTFAMILY_DEFAULT;
 337     if (HasFontFamily())
 338         fontFamily = GetFontFamily();
 339
 340     wxFont font(fontSize, fontFamily, fontStyle, fontWeight, underlined, fontFaceName, encoding);
 341 #ifdef __WXMAC__
 342     font.SetNoAntiAliasing(true);
 343 #endif
 344     return font;
 345 }
 346
 347 // Get attributes from font.
 348 bool wxTextAttr::GetFontAttributes(const wxFont& font, int flags)
 349 {
 350     if (!font.Ok())
 351         return false;
 352
 353     if (flags & wxTEXT_ATTR_FONT_SIZE)
 354         m_fontSize = font.GetPointSize();
 355
 356     if (flags & wxTEXT_ATTR_FONT_ITALIC)
 357         m_fontStyle = font.GetStyle();
 358
 359     if (flags & wxTEXT_ATTR_FONT_WEIGHT)
 360         m_fontWeight = font.GetWeight();
 361
 362     if (flags & wxTEXT_ATTR_FONT_UNDERLINE)
 363         m_fontUnderlined = font.GetUnderlined();
 364
 365     if (flags & wxTEXT_ATTR_FONT_FACE)
 366         m_fontFaceName = font.GetFaceName();
 367
 368     if (flags & wxTEXT_ATTR_FONT_ENCODING)
 369         m_fontEncoding = font.GetEncoding();
 370
 371     if (flags & wxTEXT_ATTR_FONT_FAMILY)
 372         m_fontFamily = font.GetFamily();
 373
 374     m_flags |= flags;
 375
 376     return true;
 377 }
 378
 379 // Resets bits in destination so new attributes aren't merged with mutually exclusive ones
 380 static bool wxResetIncompatibleBits(const int mask, const int srcFlags, int& destFlags, int& destBits)
 381 {
 382     if ((srcFlags & mask) && (destFlags & mask))
 383     {
 384         destBits &= ~mask;
 385         destFlags &= ~mask;
 386     }
 387
 388     return true;
 389 }
 390
 391 bool wxTextAttr::Apply(const wxTextAttr& style, const wxTextAttr* compareWith)
 392 {
 393     wxTextAttr& destStyle = (*this);
 394
 395     if (style.HasFontWeight())
 396     {
 397         if (!(compareWith && compareWith->HasFontWeight() && compareWith->GetFontWeight() == style.GetFontWeight()))
 398             destStyle.SetFontWeight(style.GetFontWeight());
 399     }
 400
 401     if (style.HasFontSize())
 402     {
 403         if (!(compareWith && compareWith->HasFontSize() && compareWith->GetFontSize() == style.GetFontSize()))
 404             destStyle.SetFontSize(style.GetFontSize());
 405     }
 406
 407     if (style.HasFontItalic())
 408     {
 409         if (!(compareWith && compareWith->HasFontItalic() && compareWith->GetFontStyle() == style.GetFontStyle()))
 410             destStyle.SetFontStyle(style.GetFontStyle());
 411     }
 412
 413     if (style.HasFontUnderlined())
 414     {
 415         if (!(compareWith && compareWith->HasFontUnderlined() && compareWith->GetFontUnderlined() == style.GetFontUnderlined()))
 416             destStyle.SetFontUnderlined(style.GetFontUnderlined());
 417     }
 418
 419     if (style.HasFontFaceName())
 420     {
 421         if (!(compareWith && compareWith->HasFontFaceName() && compareWith->GetFontFaceName() == style.GetFontFaceName()))
 422             destStyle.SetFontFaceName(style.GetFontFaceName());
 423     }
 424
 425     if (style.HasFontEncoding())
 426     {
 427         if (!(compareWith && compareWith->HasFontEncoding() && compareWith->GetFontEncoding() == style.GetFontEncoding()))
 428             destStyle.SetFontEncoding(style.GetFontEncoding());
 429     }
 430
 431     if (style.HasFontFamily())
 432     {
 433         if (!(compareWith && compareWith->HasFontFamily() && compareWith->GetFontFamily() == style.GetFontFamily()))
 434             destStyle.SetFontFamily(style.GetFontFamily());
 435     }
 436
 437     if (style.GetTextColour().Ok() && style.HasTextColour())
 438     {
 439         if (!(compareWith && compareWith->HasTextColour() && compareWith->GetTextColour() == style.GetTextColour()))
 440             destStyle.SetTextColour(style.GetTextColour());
 441     }
 442
 443     if (style.GetBackgroundColour().Ok() && style.HasBackgroundColour())
 444     {
 445         if (!(compareWith && compareWith->HasBackgroundColour() && compareWith->GetBackgroundColour() == style.GetBackgroundColour()))
 446             destStyle.SetBackgroundColour(style.GetBackgroundColour());
 447     }
 448
 449     if (style.HasAlignment())
 450     {
 451         if (!(compareWith && compareWith->HasAlignment() && compareWith->GetAlignment() == style.GetAlignment()))
 452             destStyle.SetAlignment(style.GetAlignment());
 453     }
 454
 455     if (style.HasTabs())
 456     {
 457         if (!(compareWith && compareWith->HasTabs() && TabsEq(compareWith->GetTabs(), style.GetTabs())))
 458             destStyle.SetTabs(style.GetTabs());
 459     }
 460
 461     if (style.HasLeftIndent())
 462     {
 463         if (!(compareWith && compareWith->HasLeftIndent() && compareWith->GetLeftIndent() == style.GetLeftIndent()
 464                           && compareWith->GetLeftSubIndent() == style.GetLeftSubIndent()))
 465             destStyle.SetLeftIndent(style.GetLeftIndent(), style.GetLeftSubIndent());
 466     }
 467
 468     if (style.HasRightIndent())
 469     {
 470         if (!(compareWith && compareWith->HasRightIndent() && compareWith->GetRightIndent() == style.GetRightIndent()))
 471             destStyle.SetRightIndent(style.GetRightIndent());
 472     }
 473
 474     if (style.HasParagraphSpacingAfter())
 475     {
 476         if (!(compareWith && compareWith->HasParagraphSpacingAfter() && compareWith->GetParagraphSpacingAfter() == style.GetParagraphSpacingAfter()))
 477             destStyle.SetParagraphSpacingAfter(style.GetParagraphSpacingAfter());
 478     }
 479
 480     if (style.HasParagraphSpacingBefore())
 481     {
 482         if (!(compareWith && compareWith->HasParagraphSpacingBefore() && compareWith->GetParagraphSpacingBefore() == style.GetParagraphSpacingBefore()))
 483             destStyle.SetParagraphSpacingBefore(style.GetParagraphSpacingBefore());
 484     }
 485
 486     if (style.HasLineSpacing())
 487     {
 488         if (!(compareWith && compareWith->HasLineSpacing() && compareWith->GetLineSpacing() == style.GetLineSpacing()))
 489             destStyle.SetLineSpacing(style.GetLineSpacing());
 490     }
 491
 492     if (style.HasCharacterStyleName())
 493     {
 494         if (!(compareWith && compareWith->HasCharacterStyleName() && compareWith->GetCharacterStyleName() == style.GetCharacterStyleName()))
 495             destStyle.SetCharacterStyleName(style.GetCharacterStyleName());
 496     }
 497
 498     if (style.HasParagraphStyleName())
 499     {
 500         if (!(compareWith && compareWith->HasParagraphStyleName() && compareWith->GetParagraphStyleName() == style.GetParagraphStyleName()))
 501             destStyle.SetParagraphStyleName(style.GetParagraphStyleName());
 502     }
 503
 504     if (style.HasListStyleName())
 505     {
 506         if (!(compareWith && compareWith->HasListStyleName() && compareWith->GetListStyleName() == style.GetListStyleName()))
 507             destStyle.SetListStyleName(style.GetListStyleName());
 508     }
 509
 510     if (style.HasBulletStyle())
 511     {
 512         if (!(compareWith && compareWith->HasBulletStyle() && compareWith->GetBulletStyle() == style.GetBulletStyle()))
 513             destStyle.SetBulletStyle(style.GetBulletStyle());
 514     }
 515
 516     if (style.HasBulletText())
 517     {
 518         if (!(compareWith && compareWith->HasBulletText() && compareWith->GetBulletText() == style.GetBulletText()))
 519         {
 520             destStyle.SetBulletText(style.GetBulletText());
 521             destStyle.SetBulletFont(style.GetBulletFont());
 522         }
 523     }
 524
 525     if (style.HasBulletNumber())
 526     {
 527         if (!(compareWith && compareWith->HasBulletNumber() && compareWith->GetBulletNumber() == style.GetBulletNumber()))
 528             destStyle.SetBulletNumber(style.GetBulletNumber());
 529     }
 530
 531     if (style.HasBulletName())
 532     {
 533         if (!(compareWith && compareWith->HasBulletName() && compareWith->GetBulletName() == style.GetBulletName()))
 534             destStyle.SetBulletName(style.GetBulletName());
 535     }
 536
 537     if (style.HasURL())
 538     {
 539         if (!(compareWith && compareWith->HasURL() && compareWith->GetURL() == style.GetURL()))
 540             destStyle.SetURL(style.GetURL());
 541     }
 542
 543     if (style.HasPageBreak())
 544     {
 545         if (!(compareWith && compareWith->HasPageBreak()))
 546             destStyle.SetPageBreak();
 547     }
 548
 549     if (style.HasTextEffects())
 550     {
 551         if (!(compareWith && compareWith->HasTextEffects() && compareWith->GetTextEffects() == style.GetTextEffects()))
 552         {
 553             int destBits = destStyle.GetTextEffects();
 554             int destFlags = destStyle.GetTextEffectFlags();
 555
 556             int srcBits = style.GetTextEffects();
 557             int srcFlags = style.GetTextEffectFlags();
 558
 559             // Reset incompatible bits in the destination
 560             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_SUPERSCRIPT|wxTEXT_ATTR_EFFECT_SUBSCRIPT), srcFlags, destFlags, destBits);
 561             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_CAPITALS|wxTEXT_ATTR_EFFECT_SMALL_CAPITALS), srcFlags, destFlags, destBits);
 562             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_STRIKETHROUGH|wxTEXT_ATTR_EFFECT_DOUBLE_STRIKETHROUGH), srcFlags, destFlags, destBits);
 563
 564             CombineBitlists(destBits, srcBits, destFlags, srcFlags);
 565
 566             destStyle.SetTextEffects(destBits);
 567             destStyle.SetTextEffectFlags(destFlags);
 568         }
 569     }
 570
 571     if (style.HasOutlineLevel())
 572     {
 573         if (!(compareWith && compareWith->HasOutlineLevel() && compareWith->GetOutlineLevel() == style.GetOutlineLevel()))
 574             destStyle.SetOutlineLevel(style.GetOutlineLevel());
 575     }
 576
 577     return true;
 578 }
 579
 580 /* static */
 581 wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr,
 582                                const wxTextAttr& attrDef,
 583                                const wxTextCtrlBase *text)
 584 {
 585     wxFont font;
 586     if (attr.HasFont())
 587         font = attr.GetFont();
 588
 589     if ( !font.Ok() )
 590     {
 591         if (attrDef.HasFont())
 592             font = attrDef.GetFont();
 593
 594         if ( text && !font.Ok() )
 595             font = text->GetFont();
 596     }
 597
 598     wxColour colFg = attr.GetTextColour();
 599     if ( !colFg.Ok() )
 600     {
 601         colFg = attrDef.GetTextColour();
 602
 603         if ( text && !colFg.Ok() )
 604             colFg = text->GetForegroundColour();
 605     }
 606
 607     wxColour colBg = attr.GetBackgroundColour();
 608     if ( !colBg.Ok() )
 609     {
 610         colBg = attrDef.GetBackgroundColour();
 611
 612         if ( text && !colBg.Ok() )
 613             colBg = text->GetBackgroundColour();
 614     }
 615
 616     wxTextAttr newAttr(colFg, colBg, font);
 617
 618     if (attr.HasAlignment())
 619         newAttr.SetAlignment(attr.GetAlignment());
 620     else if (attrDef.HasAlignment())
 621         newAttr.SetAlignment(attrDef.GetAlignment());
 622
 623     if (attr.HasTabs())
 624         newAttr.SetTabs(attr.GetTabs());
 625     else if (attrDef.HasTabs())
 626         newAttr.SetTabs(attrDef.GetTabs());
 627
 628     if (attr.HasLeftIndent())
 629         newAttr.SetLeftIndent(attr.GetLeftIndent(), attr.GetLeftSubIndent());
 630     else if (attrDef.HasLeftIndent())
 631         newAttr.SetLeftIndent(attrDef.GetLeftIndent(), attr.GetLeftSubIndent());
 632
 633     if (attr.HasRightIndent())
 634         newAttr.SetRightIndent(attr.GetRightIndent());
 635     else if (attrDef.HasRightIndent())
 636         newAttr.SetRightIndent(attrDef.GetRightIndent());
 637
 638     return newAttr;
 639 }
 640
 641 /// Compare tabs
 642 bool wxTextAttr::TabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2)
 643 {
 644     if (tabs1.GetCount() != tabs2.GetCount())
 645         return false;
 646
 647     size_t i;
 648     for (i = 0; i < tabs1.GetCount(); i++)
 649     {
 650         if (tabs1[i] != tabs2[i])
 651             return false;
 652     }
 653     return true;
 654 }
 655
 656 // Remove attributes
 657 bool wxTextAttr::RemoveStyle(wxTextAttr& destStyle, const wxTextAttr& style)
 658 {
 659     int flags = style.GetFlags();
 660     int destFlags = destStyle.GetFlags();
 661
 662     destStyle.SetFlags(destFlags & ~flags);
 663
 664     return true;
 665 }
 666
 667 /// Combine two bitlists, specifying the bits of interest with separate flags.
 668 bool wxTextAttr::CombineBitlists(int& valueA, int valueB, int& flagsA, int flagsB)
 669 {
 670     // We want to apply B's bits to A, taking into account each's flags which indicate which bits
 671     // are to be taken into account. A zero in B's bits should reset that bit in A but only if B's flags
 672     // indicate it.
 673
 674     // First, reset the 0 bits from B. We make a mask so we're only dealing with B's zero
 675     // bits at this point, ignoring any 1 bits in B or 0 bits in B that are not relevant.
 676     int valueA2 = ~(~valueB & flagsB) & valueA;
 677
 678     // Now combine the 1 bits.
 679     int valueA3 = (valueB & flagsB) | valueA2;
 680
 681     valueA = valueA3;
 682     flagsA = (flagsA | flagsB);
 683
 684     return true;
 685 }
 686
 687 /// Compare two bitlists
 688 bool wxTextAttr::BitlistsEqPartial(int valueA, int valueB, int flags)
 689 {
 690     int relevantBitsA = valueA & flags;
 691     int relevantBitsB = valueB & flags;
 692     return (relevantBitsA != relevantBitsB);
 693 }
 694
 695 /// Split into paragraph and character styles
 696 bool wxTextAttr::SplitParaCharStyles(const wxTextAttr& style, wxTextAttr& parStyle, wxTextAttr& charStyle)
 697 {
 698     wxTextAttr defaultCharStyle1(style);
 699     wxTextAttr defaultParaStyle1(style);
 700     defaultCharStyle1.SetFlags(defaultCharStyle1.GetFlags()&wxTEXT_ATTR_CHARACTER);
 701     defaultParaStyle1.SetFlags(defaultParaStyle1.GetFlags()&wxTEXT_ATTR_PARAGRAPH);
 702
 703     charStyle.Apply(defaultCharStyle1);
 704     parStyle.Apply(defaultParaStyle1);
 705
 706     return true;
 707 }
 708
 709 // apply styling to text range
 710 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
 711                               const wxTextAttr& WXUNUSED(style))
 712 {
 713     // to be implemented in derived classes
 714     return false;
 715 }
 716
 717 // get the styling at the given position
 718 bool wxTextCtrlBase::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style))
 719 {
 720     // to be implemented in derived classes
 721     return false;
 722 }
 723
 724 // change default text attributes
 725 bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)
 726 {
 727     // keep the old attributes if the new style doesn't specify them unless the
 728     // new style is empty - then reset m_defaultStyle (as there is no other way
 729     // to do it)
 730     if ( style.IsDefault() )
 731         m_defaultStyle = style;
 732     else
 733         m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this);
 734
 735     return true;
 736 }
 737
 738 // ----------------------------------------------------------------------------
 739 // file IO functions
 740 // ----------------------------------------------------------------------------
 741
 742 bool wxTextCtrlBase::DoLoadFile(const wxString& filename, int WXUNUSED(fileType))
 743 {
 744 #if wxUSE_FFILE
 745     wxFFile file(filename);
 746     if ( file.IsOpened() )
 747     {
 748         wxString text;
 749         if ( file.ReadAll(&text) )
 750         {
 751             SetValue(text);
 752
 753             DiscardEdits();
 754
 755             m_filename = filename;
 756
 757             return true;
 758         }
 759     }
 760
 761     wxLogError(_("File couldn't be loaded."));
 762 #endif // wxUSE_FFILE
 763
 764     return false;
 765 }
 766
 767 bool wxTextAreaBase::SaveFile(const wxString& filename, int fileType)
 768 {
 769     wxString filenameToUse = filename.empty() ? m_filename : filename;
 770     if ( filenameToUse.empty() )
 771     {
 772         // what kind of message to give? is it an error or a program bug?
 773         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 774
 775         return false;
 776     }
 777
 778     return DoSaveFile(filenameToUse, fileType);
 779 }
 780
 781 bool wxTextCtrlBase::DoSaveFile(const wxString& filename, int WXUNUSED(fileType))
 782 {
 783 #if wxUSE_FFILE
 784     wxFFile file(filename, _T("w"));
 785     if ( file.IsOpened() && file.Write(GetValue()) )
 786     {
 787         // if it worked, save for future calls
 788         m_filename = filename;
 789
 790         // it's not modified any longer
 791         DiscardEdits();
 792
 793         return true;
 794     }
 795 #endif // wxUSE_FFILE
 796
 797     wxLogError(_("The text couldn't be saved."));
 798
 799     return false;
 800 }
 801
 802 // ----------------------------------------------------------------------------
 803 // stream-like insertion operator
 804 // ----------------------------------------------------------------------------
 805
 806 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 807 {
 808     AppendText(s);
 809     return *TEXTCTRL(this);
 810 }
 811
 812 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 813 {
 814     return *this << wxString::Format("%.2f", d);
 815 }
 816
 817 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 818 {
 819     return *this << wxString::Format("%d", i);
 820 }
 821
 822 wxTextCtrl& wxTextCtrlBase::operator<<(long l)
 823 {
 824     return *this << wxString::Format("%ld", l);
 825 }
 826
 827 // ----------------------------------------------------------------------------
 828 // streambuf methods implementation
 829 // ----------------------------------------------------------------------------
 830
 831 #if wxHAS_TEXT_WINDOW_STREAM
 832
 833 int wxTextCtrlBase::overflow(int c)
 834 {
 835     AppendText((wxChar)c);
 836
 837     // return something different from EOF
 838     return 0;
 839 }
 840
 841 #endif // wxHAS_TEXT_WINDOW_STREAM
 842
 843 // ----------------------------------------------------------------------------
 844 // emulating key presses
 845 // ----------------------------------------------------------------------------
 846
 847 bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
 848 {
 849     // we have a native implementation for Win32 and so don't need this one
 850 #ifndef __WIN32__
 851     wxChar ch = 0;
 852     int keycode = event.GetKeyCode();
 853     switch ( keycode )
 854     {
 855         case WXK_NUMPAD0:
 856         case WXK_NUMPAD1:
 857         case WXK_NUMPAD2:
 858         case WXK_NUMPAD3:
 859         case WXK_NUMPAD4:
 860         case WXK_NUMPAD5:
 861         case WXK_NUMPAD6:
 862         case WXK_NUMPAD7:
 863         case WXK_NUMPAD8:
 864         case WXK_NUMPAD9:
 865             ch = (wxChar)(_T('0') + keycode - WXK_NUMPAD0);
 866             break;
 867
 868         case WXK_MULTIPLY:
 869         case WXK_NUMPAD_MULTIPLY:
 870             ch = _T('*');
 871             break;
 872
 873         case WXK_ADD:
 874         case WXK_NUMPAD_ADD:
 875             ch = _T('+');
 876             break;
 877
 878         case WXK_SUBTRACT:
 879         case WXK_NUMPAD_SUBTRACT:
 880             ch = _T('-');
 881             break;
 882
 883         case WXK_DECIMAL:
 884         case WXK_NUMPAD_DECIMAL:
 885             ch = _T('.');
 886             break;
 887
 888         case WXK_DIVIDE:
 889         case WXK_NUMPAD_DIVIDE:
 890             ch = _T('/');
 891             break;
 892
 893         case WXK_DELETE:
 894         case WXK_NUMPAD_DELETE:
 895             // delete the character at cursor
 896             {
 897                 const long pos = GetInsertionPoint();
 898                 if ( pos < GetLastPosition() )
 899                     Remove(pos, pos + 1);
 900             }
 901             break;
 902
 903         case WXK_BACK:
 904             // delete the character before the cursor
 905             {
 906                 const long pos = GetInsertionPoint();
 907                 if ( pos > 0 )
 908                     Remove(pos - 1, pos);
 909             }
 910             break;
 911
 912         default:
 913 #if wxUSE_UNICODE
 914             if ( event.GetUnicodeKey() )
 915             {
 916                 ch = event.GetUnicodeKey();
 917             }
 918             else
 919 #endif
 920             if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) )
 921             {
 922                 // FIXME this is not going to work for non letters...
 923                 if ( !event.ShiftDown() )
 924                 {
 925                     keycode = wxTolower(keycode);
 926                 }
 927
 928                 ch = (wxChar)keycode;
 929             }
 930             else
 931             {
 932                 ch = _T('\0');
 933             }
 934     }
 935
 936     if ( ch )
 937     {
 938         WriteText(ch);
 939
 940         return true;
 941     }
 942 #else // __WIN32__
 943     wxUnusedVar(event);
 944 #endif // !__WIN32__/__WIN32__
 945
 946     return false;
 947 }
 948
 949 // do the window-specific processing after processing the update event
 950 void wxTextCtrlBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 951 {
 952     // call inherited, but skip the wxControl's version, and call directly the
 953     // wxWindow's one instead, because the only reason why we are overriding this
 954     // function is that we want to use SetValue() instead of wxControl::SetLabel()
 955     wxWindowBase::DoUpdateWindowUI(event);
 956
 957     // update text
 958     if ( event.GetSetText() )
 959     {
 960         if ( event.GetText() != GetValue() )
 961             SetValue(event.GetText());
 962     }
 963 }
 964
 965 // ----------------------------------------------------------------------------
 966 // hit testing
 967 // ----------------------------------------------------------------------------
 968
 969 wxTextCtrlHitTestResult
 970 wxTextAreaBase::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
 971 {
 972     // implement in terms of the other overload as the native ports typically
 973     // can get the position and not (x, y) pair directly (although wxUniv
 974     // directly gets x and y -- and so overrides this method as well)
 975     long pos;
 976     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
 977
 978     if ( rc != wxTE_HT_UNKNOWN )
 979     {
 980         PositionToXY(pos, x, y);
 981     }
 982
 983     return rc;
 984 }
 985
 986 wxTextCtrlHitTestResult
 987 wxTextAreaBase::HitTest(const wxPoint& WXUNUSED(pt), long * WXUNUSED(pos)) const
 988 {
 989     // not implemented
 990     return wxTE_HT_UNKNOWN;
 991 }
 992
 993 // ----------------------------------------------------------------------------
 994 // events
 995 // ----------------------------------------------------------------------------
 996
 997 /* static */
 998 bool wxTextCtrlBase::SendTextUpdatedEvent(wxWindow *win)
 999 {
1000     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, win->GetId());
1001
1002     // do not do this as it could be very inefficient if the text control
1003     // contains a lot of text and we're not using ref-counted wxString
1004     // implementation -- instead, event.GetString() will query the control for
1005     // its current text if needed
1006     //event.SetString(win->GetValue());
1007
1008     event.SetEventObject(win);
1009     return win->GetEventHandler()->ProcessEvent(event);
1010 }
1011
1012 #else // !wxUSE_TEXTCTRL
1013
1014 // define this one even if !wxUSE_TEXTCTRL because it is also used by other
1015 // controls (wxComboBox and wxSpinCtrl)
1016
1017 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_UPDATED, wxCommandEvent );
1018
1019 #endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL