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     return font;
 342 }
 343
 344 // Get attributes from font.
 345 bool wxTextAttr::GetFontAttributes(const wxFont& font, int flags)
 346 {
 347     if (!font.Ok())
 348         return false;
 349
 350     if (flags & wxTEXT_ATTR_FONT_SIZE)
 351         m_fontSize = font.GetPointSize();
 352
 353     if (flags & wxTEXT_ATTR_FONT_ITALIC)
 354         m_fontStyle = font.GetStyle();
 355
 356     if (flags & wxTEXT_ATTR_FONT_WEIGHT)
 357         m_fontWeight = font.GetWeight();
 358
 359     if (flags & wxTEXT_ATTR_FONT_UNDERLINE)
 360         m_fontUnderlined = font.GetUnderlined();
 361
 362     if (flags & wxTEXT_ATTR_FONT_FACE)
 363         m_fontFaceName = font.GetFaceName();
 364
 365     if (flags & wxTEXT_ATTR_FONT_ENCODING)
 366         m_fontEncoding = font.GetEncoding();
 367
 368     if (flags & wxTEXT_ATTR_FONT_FAMILY)
 369         m_fontFamily = font.GetFamily();
 370
 371     m_flags |= flags;
 372
 373     return true;
 374 }
 375
 376 // Resets bits in destination so new attributes aren't merged with mutually exclusive ones
 377 static bool wxResetIncompatibleBits(const int mask, const int srcFlags, int& destFlags, int& destBits)
 378 {
 379     if ((srcFlags & mask) && (destFlags & mask))
 380     {
 381         destBits &= ~mask;
 382         destFlags &= ~mask;
 383     }
 384
 385     return true;
 386 }
 387
 388 bool wxTextAttr::Apply(const wxTextAttr& style, const wxTextAttr* compareWith)
 389 {
 390     wxTextAttr& destStyle = (*this);
 391
 392     if (style.HasFontWeight())
 393     {
 394         if (!(compareWith && compareWith->HasFontWeight() && compareWith->GetFontWeight() == style.GetFontWeight()))
 395             destStyle.SetFontWeight(style.GetFontWeight());
 396     }
 397
 398     if (style.HasFontSize())
 399     {
 400         if (!(compareWith && compareWith->HasFontSize() && compareWith->GetFontSize() == style.GetFontSize()))
 401             destStyle.SetFontSize(style.GetFontSize());
 402     }
 403
 404     if (style.HasFontItalic())
 405     {
 406         if (!(compareWith && compareWith->HasFontItalic() && compareWith->GetFontStyle() == style.GetFontStyle()))
 407             destStyle.SetFontStyle(style.GetFontStyle());
 408     }
 409
 410     if (style.HasFontUnderlined())
 411     {
 412         if (!(compareWith && compareWith->HasFontUnderlined() && compareWith->GetFontUnderlined() == style.GetFontUnderlined()))
 413             destStyle.SetFontUnderlined(style.GetFontUnderlined());
 414     }
 415
 416     if (style.HasFontFaceName())
 417     {
 418         if (!(compareWith && compareWith->HasFontFaceName() && compareWith->GetFontFaceName() == style.GetFontFaceName()))
 419             destStyle.SetFontFaceName(style.GetFontFaceName());
 420     }
 421
 422     if (style.HasFontEncoding())
 423     {
 424         if (!(compareWith && compareWith->HasFontEncoding() && compareWith->GetFontEncoding() == style.GetFontEncoding()))
 425             destStyle.SetFontEncoding(style.GetFontEncoding());
 426     }
 427
 428     if (style.HasFontFamily())
 429     {
 430         if (!(compareWith && compareWith->HasFontFamily() && compareWith->GetFontFamily() == style.GetFontFamily()))
 431             destStyle.SetFontFamily(style.GetFontFamily());
 432     }
 433
 434     if (style.GetTextColour().Ok() && style.HasTextColour())
 435     {
 436         if (!(compareWith && compareWith->HasTextColour() && compareWith->GetTextColour() == style.GetTextColour()))
 437             destStyle.SetTextColour(style.GetTextColour());
 438     }
 439
 440     if (style.GetBackgroundColour().Ok() && style.HasBackgroundColour())
 441     {
 442         if (!(compareWith && compareWith->HasBackgroundColour() && compareWith->GetBackgroundColour() == style.GetBackgroundColour()))
 443             destStyle.SetBackgroundColour(style.GetBackgroundColour());
 444     }
 445
 446     if (style.HasAlignment())
 447     {
 448         if (!(compareWith && compareWith->HasAlignment() && compareWith->GetAlignment() == style.GetAlignment()))
 449             destStyle.SetAlignment(style.GetAlignment());
 450     }
 451
 452     if (style.HasTabs())
 453     {
 454         if (!(compareWith && compareWith->HasTabs() && TabsEq(compareWith->GetTabs(), style.GetTabs())))
 455             destStyle.SetTabs(style.GetTabs());
 456     }
 457
 458     if (style.HasLeftIndent())
 459     {
 460         if (!(compareWith && compareWith->HasLeftIndent() && compareWith->GetLeftIndent() == style.GetLeftIndent()
 461                           && compareWith->GetLeftSubIndent() == style.GetLeftSubIndent()))
 462             destStyle.SetLeftIndent(style.GetLeftIndent(), style.GetLeftSubIndent());
 463     }
 464
 465     if (style.HasRightIndent())
 466     {
 467         if (!(compareWith && compareWith->HasRightIndent() && compareWith->GetRightIndent() == style.GetRightIndent()))
 468             destStyle.SetRightIndent(style.GetRightIndent());
 469     }
 470
 471     if (style.HasParagraphSpacingAfter())
 472     {
 473         if (!(compareWith && compareWith->HasParagraphSpacingAfter() && compareWith->GetParagraphSpacingAfter() == style.GetParagraphSpacingAfter()))
 474             destStyle.SetParagraphSpacingAfter(style.GetParagraphSpacingAfter());
 475     }
 476
 477     if (style.HasParagraphSpacingBefore())
 478     {
 479         if (!(compareWith && compareWith->HasParagraphSpacingBefore() && compareWith->GetParagraphSpacingBefore() == style.GetParagraphSpacingBefore()))
 480             destStyle.SetParagraphSpacingBefore(style.GetParagraphSpacingBefore());
 481     }
 482
 483     if (style.HasLineSpacing())
 484     {
 485         if (!(compareWith && compareWith->HasLineSpacing() && compareWith->GetLineSpacing() == style.GetLineSpacing()))
 486             destStyle.SetLineSpacing(style.GetLineSpacing());
 487     }
 488
 489     if (style.HasCharacterStyleName())
 490     {
 491         if (!(compareWith && compareWith->HasCharacterStyleName() && compareWith->GetCharacterStyleName() == style.GetCharacterStyleName()))
 492             destStyle.SetCharacterStyleName(style.GetCharacterStyleName());
 493     }
 494
 495     if (style.HasParagraphStyleName())
 496     {
 497         if (!(compareWith && compareWith->HasParagraphStyleName() && compareWith->GetParagraphStyleName() == style.GetParagraphStyleName()))
 498             destStyle.SetParagraphStyleName(style.GetParagraphStyleName());
 499     }
 500
 501     if (style.HasListStyleName())
 502     {
 503         if (!(compareWith && compareWith->HasListStyleName() && compareWith->GetListStyleName() == style.GetListStyleName()))
 504             destStyle.SetListStyleName(style.GetListStyleName());
 505     }
 506
 507     if (style.HasBulletStyle())
 508     {
 509         if (!(compareWith && compareWith->HasBulletStyle() && compareWith->GetBulletStyle() == style.GetBulletStyle()))
 510             destStyle.SetBulletStyle(style.GetBulletStyle());
 511     }
 512
 513     if (style.HasBulletText())
 514     {
 515         if (!(compareWith && compareWith->HasBulletText() && compareWith->GetBulletText() == style.GetBulletText()))
 516         {
 517             destStyle.SetBulletText(style.GetBulletText());
 518             destStyle.SetBulletFont(style.GetBulletFont());
 519         }
 520     }
 521
 522     if (style.HasBulletNumber())
 523     {
 524         if (!(compareWith && compareWith->HasBulletNumber() && compareWith->GetBulletNumber() == style.GetBulletNumber()))
 525             destStyle.SetBulletNumber(style.GetBulletNumber());
 526     }
 527
 528     if (style.HasBulletName())
 529     {
 530         if (!(compareWith && compareWith->HasBulletName() && compareWith->GetBulletName() == style.GetBulletName()))
 531             destStyle.SetBulletName(style.GetBulletName());
 532     }
 533
 534     if (style.HasURL())
 535     {
 536         if (!(compareWith && compareWith->HasURL() && compareWith->GetURL() == style.GetURL()))
 537             destStyle.SetURL(style.GetURL());
 538     }
 539
 540     if (style.HasPageBreak())
 541     {
 542         if (!(compareWith && compareWith->HasPageBreak()))
 543             destStyle.SetPageBreak();
 544     }
 545
 546     if (style.HasTextEffects())
 547     {
 548         if (!(compareWith && compareWith->HasTextEffects() && compareWith->GetTextEffects() == style.GetTextEffects()))
 549         {
 550             int destBits = destStyle.GetTextEffects();
 551             int destFlags = destStyle.GetTextEffectFlags();
 552
 553             int srcBits = style.GetTextEffects();
 554             int srcFlags = style.GetTextEffectFlags();
 555
 556             // Reset incompatible bits in the destination
 557             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_SUPERSCRIPT|wxTEXT_ATTR_EFFECT_SUBSCRIPT), srcFlags, destFlags, destBits);
 558             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_CAPITALS|wxTEXT_ATTR_EFFECT_SMALL_CAPITALS), srcFlags, destFlags, destBits);
 559             wxResetIncompatibleBits((wxTEXT_ATTR_EFFECT_STRIKETHROUGH|wxTEXT_ATTR_EFFECT_DOUBLE_STRIKETHROUGH), srcFlags, destFlags, destBits);
 560
 561             CombineBitlists(destBits, srcBits, destFlags, srcFlags);
 562
 563             destStyle.SetTextEffects(destBits);
 564             destStyle.SetTextEffectFlags(destFlags);
 565         }
 566     }
 567
 568     if (style.HasOutlineLevel())
 569     {
 570         if (!(compareWith && compareWith->HasOutlineLevel() && compareWith->GetOutlineLevel() == style.GetOutlineLevel()))
 571             destStyle.SetOutlineLevel(style.GetOutlineLevel());
 572     }
 573
 574     return true;
 575 }
 576
 577 /* static */
 578 wxTextAttr wxTextAttr::Combine(const wxTextAttr& attr,
 579                                const wxTextAttr& attrDef,
 580                                const wxTextCtrlBase *text)
 581 {
 582     wxFont font;
 583     if (attr.HasFont())
 584         font = attr.GetFont();
 585
 586     if ( !font.Ok() )
 587     {
 588         if (attrDef.HasFont())
 589             font = attrDef.GetFont();
 590
 591         if ( text && !font.Ok() )
 592             font = text->GetFont();
 593     }
 594
 595     wxColour colFg = attr.GetTextColour();
 596     if ( !colFg.Ok() )
 597     {
 598         colFg = attrDef.GetTextColour();
 599
 600         if ( text && !colFg.Ok() )
 601             colFg = text->GetForegroundColour();
 602     }
 603
 604     wxColour colBg = attr.GetBackgroundColour();
 605     if ( !colBg.Ok() )
 606     {
 607         colBg = attrDef.GetBackgroundColour();
 608
 609         if ( text && !colBg.Ok() )
 610             colBg = text->GetBackgroundColour();
 611     }
 612
 613     wxTextAttr newAttr(colFg, colBg, font);
 614
 615     if (attr.HasAlignment())
 616         newAttr.SetAlignment(attr.GetAlignment());
 617     else if (attrDef.HasAlignment())
 618         newAttr.SetAlignment(attrDef.GetAlignment());
 619
 620     if (attr.HasTabs())
 621         newAttr.SetTabs(attr.GetTabs());
 622     else if (attrDef.HasTabs())
 623         newAttr.SetTabs(attrDef.GetTabs());
 624
 625     if (attr.HasLeftIndent())
 626         newAttr.SetLeftIndent(attr.GetLeftIndent(), attr.GetLeftSubIndent());
 627     else if (attrDef.HasLeftIndent())
 628         newAttr.SetLeftIndent(attrDef.GetLeftIndent(), attr.GetLeftSubIndent());
 629
 630     if (attr.HasRightIndent())
 631         newAttr.SetRightIndent(attr.GetRightIndent());
 632     else if (attrDef.HasRightIndent())
 633         newAttr.SetRightIndent(attrDef.GetRightIndent());
 634
 635     return newAttr;
 636 }
 637
 638 /// Compare tabs
 639 bool wxTextAttr::TabsEq(const wxArrayInt& tabs1, const wxArrayInt& tabs2)
 640 {
 641     if (tabs1.GetCount() != tabs2.GetCount())
 642         return false;
 643
 644     size_t i;
 645     for (i = 0; i < tabs1.GetCount(); i++)
 646     {
 647         if (tabs1[i] != tabs2[i])
 648             return false;
 649     }
 650     return true;
 651 }
 652
 653 // Remove attributes
 654 bool wxTextAttr::RemoveStyle(wxTextAttr& destStyle, const wxTextAttr& style)
 655 {
 656     int flags = style.GetFlags();
 657     int destFlags = destStyle.GetFlags();
 658
 659     destStyle.SetFlags(destFlags & ~flags);
 660
 661     return true;
 662 }
 663
 664 /// Combine two bitlists, specifying the bits of interest with separate flags.
 665 bool wxTextAttr::CombineBitlists(int& valueA, int valueB, int& flagsA, int flagsB)
 666 {
 667     // We want to apply B's bits to A, taking into account each's flags which indicate which bits
 668     // are to be taken into account. A zero in B's bits should reset that bit in A but only if B's flags
 669     // indicate it.
 670
 671     // First, reset the 0 bits from B. We make a mask so we're only dealing with B's zero
 672     // bits at this point, ignoring any 1 bits in B or 0 bits in B that are not relevant.
 673     int valueA2 = ~(~valueB & flagsB) & valueA;
 674
 675     // Now combine the 1 bits.
 676     int valueA3 = (valueB & flagsB) | valueA2;
 677
 678     valueA = valueA3;
 679     flagsA = (flagsA | flagsB);
 680
 681     return true;
 682 }
 683
 684 /// Compare two bitlists
 685 bool wxTextAttr::BitlistsEqPartial(int valueA, int valueB, int flags)
 686 {
 687     int relevantBitsA = valueA & flags;
 688     int relevantBitsB = valueB & flags;
 689     return (relevantBitsA != relevantBitsB);
 690 }
 691
 692 /// Split into paragraph and character styles
 693 bool wxTextAttr::SplitParaCharStyles(const wxTextAttr& style, wxTextAttr& parStyle, wxTextAttr& charStyle)
 694 {
 695     wxTextAttr defaultCharStyle1(style);
 696     wxTextAttr defaultParaStyle1(style);
 697     defaultCharStyle1.SetFlags(defaultCharStyle1.GetFlags()&wxTEXT_ATTR_CHARACTER);
 698     defaultParaStyle1.SetFlags(defaultParaStyle1.GetFlags()&wxTEXT_ATTR_PARAGRAPH);
 699
 700     charStyle.Apply(defaultCharStyle1);
 701     parStyle.Apply(defaultParaStyle1);
 702
 703     return true;
 704 }
 705
 706 // apply styling to text range
 707 bool wxTextCtrlBase::SetStyle(long WXUNUSED(start), long WXUNUSED(end),
 708                               const wxTextAttr& WXUNUSED(style))
 709 {
 710     // to be implemented in derived classes
 711     return false;
 712 }
 713
 714 // get the styling at the given position
 715 bool wxTextCtrlBase::GetStyle(long WXUNUSED(position), wxTextAttr& WXUNUSED(style))
 716 {
 717     // to be implemented in derived classes
 718     return false;
 719 }
 720
 721 // change default text attributes
 722 bool wxTextCtrlBase::SetDefaultStyle(const wxTextAttr& style)
 723 {
 724     // keep the old attributes if the new style doesn't specify them unless the
 725     // new style is empty - then reset m_defaultStyle (as there is no other way
 726     // to do it)
 727     if ( style.IsDefault() )
 728         m_defaultStyle = style;
 729     else
 730         m_defaultStyle = wxTextAttr::Combine(style, m_defaultStyle, this);
 731
 732     return true;
 733 }
 734
 735 // ----------------------------------------------------------------------------
 736 // file IO functions
 737 // ----------------------------------------------------------------------------
 738
 739 bool wxTextCtrlBase::DoLoadFile(const wxString& filename, int WXUNUSED(fileType))
 740 {
 741 #if wxUSE_FFILE
 742     wxFFile file(filename);
 743     if ( file.IsOpened() )
 744     {
 745         wxString text;
 746         if ( file.ReadAll(&text) )
 747         {
 748             SetValue(text);
 749
 750             DiscardEdits();
 751
 752             m_filename = filename;
 753
 754             return true;
 755         }
 756     }
 757
 758     wxLogError(_("File couldn't be loaded."));
 759 #endif // wxUSE_FFILE
 760
 761     return false;
 762 }
 763
 764 bool wxTextAreaBase::SaveFile(const wxString& filename, int fileType)
 765 {
 766     wxString filenameToUse = filename.empty() ? m_filename : filename;
 767     if ( filenameToUse.empty() )
 768     {
 769         // what kind of message to give? is it an error or a program bug?
 770         wxLogDebug(wxT("Can't save textctrl to file without filename."));
 771
 772         return false;
 773     }
 774
 775     return DoSaveFile(filenameToUse, fileType);
 776 }
 777
 778 bool wxTextCtrlBase::DoSaveFile(const wxString& filename, int WXUNUSED(fileType))
 779 {
 780 #if wxUSE_FFILE
 781     wxFFile file(filename, wxT("w"));
 782     if ( file.IsOpened() && file.Write(GetValue()) )
 783     {
 784         // if it worked, save for future calls
 785         m_filename = filename;
 786
 787         // it's not modified any longer
 788         DiscardEdits();
 789
 790         return true;
 791     }
 792 #endif // wxUSE_FFILE
 793
 794     wxLogError(_("The text couldn't be saved."));
 795
 796     return false;
 797 }
 798
 799 // ----------------------------------------------------------------------------
 800 // stream-like insertion operator
 801 // ----------------------------------------------------------------------------
 802
 803 wxTextCtrl& wxTextCtrlBase::operator<<(const wxString& s)
 804 {
 805     AppendText(s);
 806     return *TEXTCTRL(this);
 807 }
 808
 809 wxTextCtrl& wxTextCtrlBase::operator<<(double d)
 810 {
 811     return *this << wxString::Format("%.2f", d);
 812 }
 813
 814 wxTextCtrl& wxTextCtrlBase::operator<<(int i)
 815 {
 816     return *this << wxString::Format("%d", i);
 817 }
 818
 819 wxTextCtrl& wxTextCtrlBase::operator<<(long l)
 820 {
 821     return *this << wxString::Format("%ld", l);
 822 }
 823
 824 // ----------------------------------------------------------------------------
 825 // streambuf methods implementation
 826 // ----------------------------------------------------------------------------
 827
 828 #if wxHAS_TEXT_WINDOW_STREAM
 829
 830 int wxTextCtrlBase::overflow(int c)
 831 {
 832     AppendText((wxChar)c);
 833
 834     // return something different from EOF
 835     return 0;
 836 }
 837
 838 #endif // wxHAS_TEXT_WINDOW_STREAM
 839
 840 // ----------------------------------------------------------------------------
 841 // emulating key presses
 842 // ----------------------------------------------------------------------------
 843
 844 bool wxTextCtrlBase::EmulateKeyPress(const wxKeyEvent& event)
 845 {
 846     // we have a native implementation for Win32 and so don't need this one
 847 #ifndef __WIN32__
 848     wxChar ch = 0;
 849     int keycode = event.GetKeyCode();
 850     switch ( keycode )
 851     {
 852         case WXK_NUMPAD0:
 853         case WXK_NUMPAD1:
 854         case WXK_NUMPAD2:
 855         case WXK_NUMPAD3:
 856         case WXK_NUMPAD4:
 857         case WXK_NUMPAD5:
 858         case WXK_NUMPAD6:
 859         case WXK_NUMPAD7:
 860         case WXK_NUMPAD8:
 861         case WXK_NUMPAD9:
 862             ch = (wxChar)(wxT('0') + keycode - WXK_NUMPAD0);
 863             break;
 864
 865         case WXK_MULTIPLY:
 866         case WXK_NUMPAD_MULTIPLY:
 867             ch = wxT('*');
 868             break;
 869
 870         case WXK_ADD:
 871         case WXK_NUMPAD_ADD:
 872             ch = wxT('+');
 873             break;
 874
 875         case WXK_SUBTRACT:
 876         case WXK_NUMPAD_SUBTRACT:
 877             ch = wxT('-');
 878             break;
 879
 880         case WXK_DECIMAL:
 881         case WXK_NUMPAD_DECIMAL:
 882             ch = wxT('.');
 883             break;
 884
 885         case WXK_DIVIDE:
 886         case WXK_NUMPAD_DIVIDE:
 887             ch = wxT('/');
 888             break;
 889
 890         case WXK_DELETE:
 891         case WXK_NUMPAD_DELETE:
 892             // delete the character at cursor
 893             {
 894                 const long pos = GetInsertionPoint();
 895                 if ( pos < GetLastPosition() )
 896                     Remove(pos, pos + 1);
 897             }
 898             break;
 899
 900         case WXK_BACK:
 901             // delete the character before the cursor
 902             {
 903                 const long pos = GetInsertionPoint();
 904                 if ( pos > 0 )
 905                     Remove(pos - 1, pos);
 906             }
 907             break;
 908
 909         default:
 910 #if wxUSE_UNICODE
 911             if ( event.GetUnicodeKey() )
 912             {
 913                 ch = event.GetUnicodeKey();
 914             }
 915             else
 916 #endif
 917             if ( keycode < 256 && keycode >= 0 && wxIsprint(keycode) )
 918             {
 919                 // FIXME this is not going to work for non letters...
 920                 if ( !event.ShiftDown() )
 921                 {
 922                     keycode = wxTolower(keycode);
 923                 }
 924
 925                 ch = (wxChar)keycode;
 926             }
 927             else
 928             {
 929                 ch = wxT('\0');
 930             }
 931     }
 932
 933     if ( ch )
 934     {
 935         WriteText(ch);
 936
 937         return true;
 938     }
 939 #else // __WIN32__
 940     wxUnusedVar(event);
 941 #endif // !__WIN32__/__WIN32__
 942
 943     return false;
 944 }
 945
 946 // do the window-specific processing after processing the update event
 947 void wxTextCtrlBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
 948 {
 949     // call inherited, but skip the wxControl's version, and call directly the
 950     // wxWindow's one instead, because the only reason why we are overriding this
 951     // function is that we want to use SetValue() instead of wxControl::SetLabel()
 952     wxWindowBase::DoUpdateWindowUI(event);
 953
 954     // update text
 955     if ( event.GetSetText() )
 956     {
 957         if ( event.GetText() != GetValue() )
 958             SetValue(event.GetText());
 959     }
 960 }
 961
 962 // ----------------------------------------------------------------------------
 963 // hit testing
 964 // ----------------------------------------------------------------------------
 965
 966 wxTextCtrlHitTestResult
 967 wxTextAreaBase::HitTest(const wxPoint& pt, wxTextCoord *x, wxTextCoord *y) const
 968 {
 969     // implement in terms of the other overload as the native ports typically
 970     // can get the position and not (x, y) pair directly (although wxUniv
 971     // directly gets x and y -- and so overrides this method as well)
 972     long pos;
 973     wxTextCtrlHitTestResult rc = HitTest(pt, &pos);
 974
 975     if ( rc != wxTE_HT_UNKNOWN )
 976     {
 977         PositionToXY(pos, x, y);
 978     }
 979
 980     return rc;
 981 }
 982
 983 wxTextCtrlHitTestResult
 984 wxTextAreaBase::HitTest(const wxPoint& WXUNUSED(pt), long * WXUNUSED(pos)) const
 985 {
 986     // not implemented
 987     return wxTE_HT_UNKNOWN;
 988 }
 989
 990 // ----------------------------------------------------------------------------
 991 // events
 992 // ----------------------------------------------------------------------------
 993
 994 /* static */
 995 bool wxTextCtrlBase::SendTextUpdatedEvent(wxWindow *win)
 996 {
 997     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, win->GetId());
 998
 999     // do not do this as it could be very inefficient if the text control
1000     // contains a lot of text and we're not using ref-counted wxString
1001     // implementation -- instead, event.GetString() will query the control for
1002     // its current text if needed
1003     //event.SetString(win->GetValue());
1004
1005     event.SetEventObject(win);
1006     return win->GetEventHandler()->ProcessEvent(event);
1007 }
1008
1009 #else // !wxUSE_TEXTCTRL
1010
1011 // define this one even if !wxUSE_TEXTCTRL because it is also used by other
1012 // controls (wxComboBox and wxSpinCtrl)
1013
1014 wxDEFINE_EVENT( wxEVT_COMMAND_TEXT_UPDATED, wxCommandEvent );
1015
1016 #endif // wxUSE_TEXTCTRL/!wxUSE_TEXTCTRL