src/msw/pen.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        msw/pen.cpp
   3 // Purpose:     wxPen
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13 #pragma implementation "pen.h"
  14 #endif
  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 <stdio.h>
  25 #include "wx/setup.h"
  26 #include "wx/list.h"
  27 #include "wx/utils.h"
  28 #include "wx/app.h"
  29 #include "wx/pen.h"
  30 #endif
  31
  32 #include "wx/msw/private.h"
  33 #include "assert.h"
  34
  35 IMPLEMENT_DYNAMIC_CLASS(wxPen, wxGDIObject)
  36
  37 wxPenRefData::wxPenRefData()
  38 {
  39   m_style = wxSOLID;
  40   m_width = 1;
  41   m_join = wxJOIN_ROUND ;
  42   m_cap = wxCAP_ROUND ;
  43   m_nbDash = 0 ;
  44   m_dash = (wxMSWDash*)NULL;
  45   m_hPen = 0;
  46 }
  47
  48 wxPenRefData::wxPenRefData(const wxPenRefData& data)
  49 {
  50     m_style = data.m_style;
  51     m_width = data.m_width;
  52     m_join = data.m_join;
  53     m_cap = data.m_cap;
  54     m_nbDash = data.m_nbDash;
  55     m_dash = data.m_dash;
  56     m_colour = data.m_colour;
  57     m_hPen = 0;
  58 }
  59
  60 wxPenRefData::~wxPenRefData()
  61 {
  62         if ( m_hPen )
  63                 ::DeleteObject((HPEN) m_hPen);
  64 }
  65
  66 // Pens
  67
  68 wxPen::wxPen()
  69 {
  70   if (wxThePenList)
  71     wxThePenList->AddPen(this);
  72 }
  73
  74 wxPen::~wxPen()
  75 {
  76     if (wxThePenList)
  77         wxThePenList->RemovePen(this);
  78 }
  79
  80 // Should implement Create
  81 wxPen::wxPen(const wxColour& col, int Width, int Style)
  82 {
  83   m_refData = new wxPenRefData;
  84
  85   M_PENDATA->m_colour = col;
  86 //  M_PENDATA->m_stipple = NULL;
  87   M_PENDATA->m_width = Width;
  88   M_PENDATA->m_style = Style;
  89   M_PENDATA->m_join = wxJOIN_ROUND ;
  90   M_PENDATA->m_cap = wxCAP_ROUND ;
  91   M_PENDATA->m_nbDash = 0 ;
  92   M_PENDATA->m_dash = (wxMSWDash*)NULL;
  93   M_PENDATA->m_hPen = 0 ;
  94
  95 #ifndef __WIN32__
  96   // In Windows, only a pen of width = 1 can be dotted or dashed!
  97   if ((Style == wxDOT) || (Style == wxLONG_DASH) ||
  98       (Style == wxSHORT_DASH) || (Style == wxDOT_DASH) ||
  99       (Style == wxUSER_DASH))
 100     M_PENDATA->m_width = 1;
 101 #else
 102 /***
 103   DWORD vers = GetVersion() ;
 104   WORD  high = HIWORD(vers) ; // high bit=0 for NT, 1 for Win32s
 105   // Win32s doesn't support wide dashed pens
 106
 107   if ((high&0x8000)!=0)
 108 ***/
 109   if (wxGetOsVersion()==wxWIN32S)
 110   {
 111     // In Windows, only a pen of width = 1 can be dotted or dashed!
 112     if ((Style == wxDOT) || (Style == wxLONG_DASH) ||
 113         (Style == wxSHORT_DASH) || (Style == wxDOT_DASH) ||
 114         (Style == wxUSER_DASH))
 115       M_PENDATA->m_width = 1;
 116   }
 117 #endif
 118   RealizeResource();
 119
 120   if ( wxThePenList )
 121     wxThePenList->AddPen(this);
 122 }
 123
 124 wxPen::wxPen(const wxBitmap& stipple, int Width)
 125 {
 126     m_refData = new wxPenRefData;
 127
 128 //  M_PENDATA->m_colour = col;
 129     M_PENDATA->m_stipple = stipple;
 130     M_PENDATA->m_width = Width;
 131     M_PENDATA->m_style = wxSTIPPLE;
 132     M_PENDATA->m_join = wxJOIN_ROUND ;
 133     M_PENDATA->m_cap = wxCAP_ROUND ;
 134     M_PENDATA->m_nbDash = 0 ;
 135     M_PENDATA->m_dash = (wxMSWDash*)NULL;
 136     M_PENDATA->m_hPen = 0 ;
 137
 138     RealizeResource();
 139
 140     if (wxThePenList)
 141        wxThePenList->AddPen(this);
 142 }
 143
 144 bool wxPen::RealizeResource()
 145 {
 146    if (M_PENDATA && (M_PENDATA->m_hPen == 0))
 147    {
 148        if (M_PENDATA->m_style==wxTRANSPARENT)
 149        {
 150            M_PENDATA->m_hPen = (WXHPEN) ::GetStockObject(NULL_PEN);
 151            return TRUE;
 152        }
 153
 154        COLORREF ms_colour = 0;
 155        ms_colour = M_PENDATA->m_colour.GetPixel();
 156
 157        // Join style, Cap style, Pen Stippling only on Win32.
 158        // Currently no time to find equivalent on Win3.1, sorry
 159        // [if such equiv exist!!]
 160 #ifdef __WIN32__
 161        if (M_PENDATA->m_join==wxJOIN_ROUND        &&
 162            M_PENDATA->m_cap==wxCAP_ROUND          &&
 163            M_PENDATA->m_style!=wxUSER_DASH        &&
 164            M_PENDATA->m_style!=wxSTIPPLE          &&
 165            M_PENDATA->m_width <= 1)
 166        {
 167            M_PENDATA->m_hPen =
 168              (WXHPEN) CreatePen( wx2msPenStyle(M_PENDATA->m_style),
 169                                  M_PENDATA->m_width,
 170                                  ms_colour );
 171        }
 172        else
 173        {
 174            DWORD ms_style = PS_GEOMETRIC | wx2msPenStyle(M_PENDATA->m_style);
 175
 176            switch(M_PENDATA->m_join)
 177            {
 178                case wxJOIN_BEVEL: ms_style |= PS_JOIN_BEVEL; break;
 179                case wxJOIN_MITER: ms_style |= PS_JOIN_MITER; break;
 180                default:
 181                case wxJOIN_ROUND: ms_style |= PS_JOIN_ROUND; break;
 182            }
 183
 184            switch(M_PENDATA->m_cap)
 185            {
 186                case wxCAP_PROJECTING: ms_style |= PS_ENDCAP_SQUARE;  break;
 187                case wxCAP_BUTT:       ms_style |= PS_ENDCAP_FLAT;    break;
 188                default:
 189                case wxCAP_ROUND:      ms_style |= PS_ENDCAP_ROUND;   break;
 190            }
 191
 192            LOGBRUSH logb;
 193
 194            switch(M_PENDATA->m_style)
 195            {
 196                case wxSTIPPLE:
 197                    logb.lbStyle = BS_PATTERN ;
 198                    if (M_PENDATA->m_stipple.Ok())
 199                        logb.lbHatch = (LONG)M_PENDATA->m_stipple.GetHBITMAP();
 200                    else
 201                        logb.lbHatch = (LONG)0;
 202                    break;
 203                case wxBDIAGONAL_HATCH:
 204                    logb.lbStyle = BS_HATCHED;
 205                    logb.lbHatch = HS_BDIAGONAL;
 206                    break;
 207                case wxCROSSDIAG_HATCH:
 208                    logb.lbStyle = BS_HATCHED;
 209                    logb.lbHatch = HS_DIAGCROSS;
 210                    break;
 211                case wxFDIAGONAL_HATCH:
 212                    logb.lbStyle = BS_HATCHED;
 213                    logb.lbHatch = HS_FDIAGONAL;
 214                    break;
 215                case wxCROSS_HATCH:
 216                    logb.lbStyle = BS_HATCHED;
 217                    logb.lbHatch = HS_CROSS;
 218                    break;
 219                case wxHORIZONTAL_HATCH:
 220                    logb.lbStyle = BS_HATCHED;
 221                    logb.lbHatch = HS_HORIZONTAL;
 222                    break;
 223                case wxVERTICAL_HATCH:
 224                    logb.lbStyle = BS_HATCHED;
 225                    logb.lbHatch = HS_VERTICAL;
 226                    break;
 227                default:
 228                    logb.lbStyle = BS_SOLID;
 229 #ifdef __WXDEBUG__
 230                    // this should be unnecessary (it's unused) but suppresses the Purigy
 231                    // messages about uninitialized memory read
 232                    logb.lbHatch = 0;
 233 #endif
 234                    break;
 235            }
 236
 237            logb.lbColor = ms_colour;
 238
 239            wxMSWDash *real_dash;
 240            if (M_PENDATA->m_style==wxUSER_DASH && M_PENDATA->m_nbDash && M_PENDATA->m_dash)
 241            {
 242                real_dash = new wxMSWDash[M_PENDATA->m_nbDash];
 243                int i;
 244                for (i=0; i<M_PENDATA->m_nbDash; i++)
 245                    real_dash[i] = M_PENDATA->m_dash[i] * M_PENDATA->m_width;
 246            }
 247            else
 248            {
 249                real_dash = (wxMSWDash*)NULL;
 250            }
 251
 252            // Win32s doesn't have ExtCreatePen function...
 253            if (wxGetOsVersion()==wxWINDOWS_NT || wxGetOsVersion()==wxWIN95)
 254            {
 255                M_PENDATA->m_hPen =
 256                  (WXHPEN) ExtCreatePen( ms_style,
 257                                         M_PENDATA->m_width,
 258                                         &logb,
 259                                         M_PENDATA->m_style == wxUSER_DASH
 260                                           ? M_PENDATA->m_nbDash
 261                                           : 0,
 262                                         (LPDWORD)real_dash );
 263            }
 264            else
 265            {
 266                M_PENDATA->m_hPen =
 267                   (WXHPEN) CreatePen( wx2msPenStyle(M_PENDATA->m_style),
 268                                       M_PENDATA->m_width,
 269                                       ms_colour );
 270            }
 271
 272            if (real_dash)
 273                delete [] real_dash;
 274        }
 275 #else
 276        M_PENDATA->m_hPen =
 277          (WXHPEN) CreatePen( wx2msPenStyle(M_PENDATA->m_style),
 278                              M_PENDATA->m_width,
 279                              ms_colour );
 280 #endif
 281 #ifdef WXDEBUG_CREATE
 282        if (M_PENDATA->m_hPen==0)
 283            wxError("Cannot create pen","Internal error") ;
 284 #endif
 285        return TRUE;
 286     }
 287     return FALSE;
 288 }
 289
 290 WXHANDLE wxPen::GetResourceHandle()
 291 {
 292         if ( !M_PENDATA )
 293                 return 0;
 294         else
 295                 return (WXHANDLE)M_PENDATA->m_hPen;
 296 }
 297
 298 bool wxPen::FreeResource(bool WXUNUSED(force))
 299 {
 300   if (M_PENDATA && (M_PENDATA->m_hPen != 0))
 301   {
 302     DeleteObject((HPEN) M_PENDATA->m_hPen);
 303     M_PENDATA->m_hPen = 0;
 304     return TRUE;
 305   }
 306   else return FALSE;
 307 }
 308
 309 bool wxPen::IsFree() const
 310 {
 311   return (M_PENDATA && M_PENDATA->m_hPen == 0);
 312 }
 313
 314 void wxPen::Unshare()
 315 {
 316         // Don't change shared data
 317         if (!m_refData)
 318     {
 319                 m_refData = new wxPenRefData();
 320         }
 321     else
 322     {
 323                 wxPenRefData* ref = new wxPenRefData(*(wxPenRefData*)m_refData);
 324                 UnRef();
 325                 m_refData = ref;
 326         }
 327 }
 328
 329 void wxPen::SetColour(const wxColour& col)
 330 {
 331     Unshare();
 332
 333     M_PENDATA->m_colour = col;
 334
 335     RealizeResource();
 336 }
 337
 338 void wxPen::SetColour(unsigned char r, unsigned char g, unsigned char b)
 339 {
 340     Unshare();
 341
 342     M_PENDATA->m_colour.Set(r, g, b);
 343
 344     RealizeResource();
 345 }
 346
 347 void wxPen::SetWidth(int Width)
 348 {
 349     Unshare();
 350
 351     M_PENDATA->m_width = Width;
 352
 353     RealizeResource();
 354 }
 355
 356 void wxPen::SetStyle(int Style)
 357 {
 358     Unshare();
 359
 360     M_PENDATA->m_style = Style;
 361
 362     RealizeResource();
 363 }
 364
 365 void wxPen::SetStipple(const wxBitmap& Stipple)
 366 {
 367     Unshare();
 368
 369     M_PENDATA->m_stipple = Stipple;
 370     M_PENDATA->m_style = wxSTIPPLE;
 371
 372     RealizeResource();
 373 }
 374
 375 void wxPen::SetDashes(int nb_dashes, const wxDash *Dash)
 376 {
 377     Unshare();
 378
 379     M_PENDATA->m_nbDash = nb_dashes;
 380     M_PENDATA->m_dash = (wxMSWDash *)Dash;
 381
 382     RealizeResource();
 383 }
 384
 385 void wxPen::SetJoin(int Join)
 386 {
 387     Unshare();
 388
 389     M_PENDATA->m_join = Join;
 390
 391     RealizeResource();
 392 }
 393
 394 void wxPen::SetCap(int Cap)
 395 {
 396     Unshare();
 397
 398     M_PENDATA->m_cap = Cap;
 399
 400     RealizeResource();
 401 }
 402
 403 int wx2msPenStyle(int wx_style)
 404 {
 405     int cstyle;
 406     switch (wx_style)
 407     {
 408        case wxDOT:
 409            cstyle = PS_DOT;
 410            break;
 411
 412        case wxDOT_DASH:
 413            cstyle = PS_DASHDOT;
 414            break;
 415
 416        case wxSHORT_DASH:
 417        case wxLONG_DASH:
 418            cstyle = PS_DASH;
 419            break;
 420
 421        case wxTRANSPARENT:
 422            cstyle = PS_NULL;
 423            break;
 424
 425        case wxUSER_DASH:
 426 #ifdef __WIN32__
 427            // Win32s doesn't have PS_USERSTYLE
 428            if (wxGetOsVersion()==wxWINDOWS_NT || wxGetOsVersion()==wxWIN95)
 429                cstyle = PS_USERSTYLE;
 430            else
 431                cstyle = PS_DOT; // We must make a choice... This is mine!
 432 #else
 433            cstyle = PS_DASH;
 434 #endif
 435            break;
 436        case wxSOLID:
 437        default:
 438            cstyle = PS_SOLID;
 439            break;
 440    }
 441    return cstyle;
 442 }
 443