src/msw/brush.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/brush.cpp
   3 // Purpose:     wxBrush
   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 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 #ifdef __GNUG__
  17 #pragma implementation "brush.h"
  18 #endif
  19
  20 // ----------------------------------------------------------------------------
  21 // headers
  22 // ----------------------------------------------------------------------------
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/list.h"
  33     #include "wx/utils.h"
  34     #include "wx/app.h"
  35     #include "wx/brush.h"
  36 #endif // WX_PRECOMP
  37
  38 #include "wx/msw/private.h"
  39
  40 // ----------------------------------------------------------------------------
  41 // private classes
  42 // ----------------------------------------------------------------------------
  43
  44 class WXDLLEXPORT wxBrushRefData: public wxGDIRefData
  45 {
  46 public:
  47     wxBrushRefData(const wxColour& colour = wxNullColour, int style = wxSOLID);
  48     wxBrushRefData(const wxBitmap& stipple);
  49     wxBrushRefData(const wxBrushRefData& data);
  50     virtual ~wxBrushRefData();
  51
  52     bool operator==(const wxBrushRefData& data) const;
  53
  54     HBRUSH GetHBRUSH();
  55     void Free();
  56
  57     const wxColour& GetColour() const { return m_colour; }
  58     int GetStyle() const { return m_style; }
  59     wxBitmap *GetStipple() { return &m_stipple; }
  60
  61     void SetColour(const wxColour& colour) { Free(); m_colour = colour; }
  62     void SetStyle(int style) { Free(); m_style = style; }
  63     void SetStipple(const wxBitmap& stipple) { Free(); DoSetStipple(stipple); }
  64
  65 private:
  66     void DoSetStipple(const wxBitmap& stipple);
  67
  68     int           m_style;
  69     wxBitmap      m_stipple;
  70     wxColour      m_colour;
  71     HBRUSH        m_hBrush;
  72
  73     // no assignment operator, the objects of this class are shared and never
  74     // assigned after being created once
  75     wxBrushRefData& operator=(const wxBrushRefData&);
  76 };
  77
  78 #define M_BRUSHDATA ((wxBrushRefData *)m_refData)
  79
  80 // ============================================================================
  81 // wxBrushRefData implementation
  82 // ============================================================================
  83
  84 IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)
  85
  86 // ----------------------------------------------------------------------------
  87 // wxBrushRefData ctors/dtor
  88 // ----------------------------------------------------------------------------
  89
  90 wxBrushRefData::wxBrushRefData(const wxColour& colour, int style)
  91               : m_colour(colour)
  92 {
  93     m_style = style;
  94
  95     m_hBrush = NULL;
  96 }
  97
  98 wxBrushRefData::wxBrushRefData(const wxBitmap& stipple)
  99 {
 100     DoSetStipple(stipple);
 101
 102     m_hBrush = NULL;
 103 }
 104
 105 wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
 106               : m_stipple(data.m_stipple),
 107                 m_colour(data.m_colour)
 108 {
 109     m_style = data.m_style;
 110
 111     // we can't share HBRUSH, we'd need to create another one ourselves
 112     m_hBrush = NULL;
 113 }
 114
 115 wxBrushRefData::~wxBrushRefData()
 116 {
 117     Free();
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // wxBrushRefData accesors
 122 // ----------------------------------------------------------------------------
 123
 124 bool wxBrushRefData::operator==(const wxBrushRefData& data) const
 125 {
 126     // don't compare HBRUSHes
 127     return m_style == data.m_style &&
 128            m_colour == data.m_colour &&
 129            m_stipple == data.m_stipple;
 130 }
 131
 132 void wxBrushRefData::DoSetStipple(const wxBitmap& stipple)
 133 {
 134     m_stipple = stipple;
 135     m_style = stipple.GetMask() ? wxSTIPPLE_MASK_OPAQUE : wxSTIPPLE;
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139 // wxBrushRefData resource handling
 140 // ----------------------------------------------------------------------------
 141
 142 void wxBrushRefData::Free()
 143 {
 144     if ( m_hBrush )
 145     {
 146         ::DeleteObject(m_hBrush);
 147
 148         m_hBrush = NULL;
 149     }
 150 }
 151
 152 static int TransllateHatchStyle(int style)
 153 {
 154     switch ( style )
 155     {
 156 #ifndef __WXMICROWIN__
 157         case wxBDIAGONAL_HATCH: return HS_BDIAGONAL;
 158         case wxCROSSDIAG_HATCH: return HS_DIAGCROSS;
 159         case wxFDIAGONAL_HATCH: return HS_FDIAGONAL;
 160         case wxCROSS_HATCH:     return HS_CROSS;
 161         case wxHORIZONTAL_HATCH:return HS_HORIZONTAL;
 162         case wxVERTICAL_HATCH:  return HS_VERTICAL;
 163 #endif // __WXMICROWIN__
 164         default:                return -1;
 165     }
 166 }
 167
 168 HBRUSH wxBrushRefData::GetHBRUSH()
 169 {
 170     if ( !m_hBrush )
 171     {
 172         int hatchStyle = TransllateHatchStyle(m_style);
 173         if ( hatchStyle == -1 )
 174         {
 175             switch ( m_style )
 176             {
 177                 case wxTRANSPARENT:
 178                     m_hBrush = (HBRUSH)::GetStockObject(NULL_BRUSH);
 179                     break;
 180
 181                 case wxSTIPPLE:
 182                     m_hBrush = ::CreatePatternBrush(GetHbitmapOf(m_stipple));
 183                     break;
 184
 185                 case wxSTIPPLE_MASK_OPAQUE:
 186                     m_hBrush = ::CreatePatternBrush((HBITMAP)m_stipple.GetMask()
 187                                                         ->GetMaskBitmap());
 188                     break;
 189
 190                 default:
 191                     wxFAIL_MSG( _T("unknown brush style") );
 192                     // fall through
 193
 194                 case wxSOLID:
 195                     m_hBrush = ::CreateSolidBrush(m_colour.GetPixel());
 196                     break;
 197             }
 198         }
 199         else // create a hatched brush
 200         {
 201             m_hBrush = ::CreateHatchBrush(hatchStyle, m_colour.GetPixel());
 202         }
 203
 204         if ( !m_hBrush )
 205         {
 206             wxLogLastError(_T("CreateXXXBrush()"));
 207         }
 208     }
 209
 210     return m_hBrush;
 211 }
 212
 213 // ============================================================================
 214 // wxBrush implementation
 215 // ============================================================================
 216
 217 // ----------------------------------------------------------------------------
 218 // wxBrush ctors/dtor
 219 // ----------------------------------------------------------------------------
 220
 221 wxBrush::wxBrush()
 222 {
 223 }
 224
 225 wxBrush::wxBrush(const wxColour& col, int style)
 226 {
 227     m_refData = new wxBrushRefData(col, style);
 228 }
 229
 230 wxBrush::wxBrush(const wxBitmap& stipple)
 231 {
 232     m_refData = new wxBrushRefData(stipple);
 233 }
 234
 235 wxBrush::~wxBrush()
 236 {
 237 }
 238
 239 // ----------------------------------------------------------------------------
 240 // wxBrush house keeping stuff
 241 // ----------------------------------------------------------------------------
 242
 243 wxBrush& wxBrush::operator=(const wxBrush& brush)
 244 {
 245     if ( *this != brush )
 246     {
 247         Ref(brush);
 248     }
 249
 250     return *this;
 251 }
 252
 253 bool wxBrush::operator==(const wxBrush& brush) const
 254 {
 255     const wxBrushRefData *brushData = (wxBrushRefData *)brush.m_refData;
 256
 257     // an invalid brush is considered to be only equal to another invalid brush
 258     return m_refData ? (brushData && *M_BRUSHDATA == *brushData) : !brushData;
 259 }
 260
 261 wxObjectRefData *wxBrush::CreateRefData() const
 262 {
 263     return new wxBrushRefData;
 264 }
 265
 266 wxObjectRefData *wxBrush::CloneRefData(const wxObjectRefData *data) const
 267 {
 268     return new wxBrushRefData(*(const wxBrushRefData *)data);
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // wxBrush accessors
 273 // ----------------------------------------------------------------------------
 274
 275 wxColour wxBrush::GetColour() const
 276 {
 277     wxCHECK_MSG( Ok(), wxNullColour, _T("invalid brush") );
 278
 279     return M_BRUSHDATA->GetColour();
 280 }
 281
 282 int wxBrush::GetStyle() const
 283 {
 284     wxCHECK_MSG( Ok(), 0, _T("invalid brush") );
 285
 286     return M_BRUSHDATA->GetStyle();
 287 }
 288
 289 wxBitmap *wxBrush::GetStipple() const
 290 {
 291     wxCHECK_MSG( Ok(), NULL, _T("invalid brush") );
 292
 293     return M_BRUSHDATA->GetStipple();
 294 }
 295
 296 WXHANDLE wxBrush::GetResourceHandle() const
 297 {
 298     wxCHECK_MSG( Ok(), FALSE, _T("invalid brush") );
 299
 300     return (WXHANDLE)M_BRUSHDATA->GetHBRUSH();
 301 }
 302
 303 // ----------------------------------------------------------------------------
 304 // wxBrush setters
 305 // ----------------------------------------------------------------------------
 306
 307 void wxBrush::SetColour(const wxColour& col)
 308 {
 309     AllocExclusive();
 310
 311     M_BRUSHDATA->SetColour(col);
 312 }
 313
 314 void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
 315 {
 316     AllocExclusive();
 317
 318     M_BRUSHDATA->SetColour(wxColour(r, g, b));
 319 }
 320
 321 void wxBrush::SetStyle(int style)
 322 {
 323     AllocExclusive();
 324
 325     M_BRUSHDATA->SetStyle(style);
 326 }
 327
 328 void wxBrush::SetStipple(const wxBitmap& stipple)
 329 {
 330     AllocExclusive();
 331
 332     M_BRUSHDATA->SetStipple(stipple);
 333 }
 334
 335