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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #include "wx/brush.h"
  28
  29 #ifndef WX_PRECOMP
  30     #include "wx/list.h"
  31     #include "wx/utils.h"
  32     #include "wx/app.h"
  33 #endif // WX_PRECOMP
  34
  35 #include "wx/msw/private.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // private classes
  39 // ----------------------------------------------------------------------------
  40
  41 class WXDLLEXPORT wxBrushRefData: public wxGDIRefData
  42 {
  43 public:
  44     wxBrushRefData(const wxColour& colour = wxNullColour, int style = wxSOLID);
  45     wxBrushRefData(const wxBitmap& stipple);
  46     wxBrushRefData(const wxBrushRefData& data);
  47     virtual ~wxBrushRefData();
  48
  49     bool operator==(const wxBrushRefData& data) const;
  50
  51     HBRUSH GetHBRUSH();
  52     void Free();
  53
  54     const wxColour& GetColour() const { return m_colour; }
  55     int GetStyle() const { return m_style; }
  56     wxBitmap *GetStipple() { return &m_stipple; }
  57
  58     void SetColour(const wxColour& colour) { Free(); m_colour = colour; }
  59     void SetStyle(int style) { Free(); m_style = style; }
  60     void SetStipple(const wxBitmap& stipple) { Free(); DoSetStipple(stipple); }
  61
  62 private:
  63     void DoSetStipple(const wxBitmap& stipple);
  64
  65     int           m_style;
  66     wxBitmap      m_stipple;
  67     wxColour      m_colour;
  68     HBRUSH        m_hBrush;
  69
  70     // no assignment operator, the objects of this class are shared and never
  71     // assigned after being created once
  72     wxBrushRefData& operator=(const wxBrushRefData&);
  73 };
  74
  75 #define M_BRUSHDATA ((wxBrushRefData *)m_refData)
  76
  77 // ============================================================================
  78 // wxBrushRefData implementation
  79 // ============================================================================
  80
  81 IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)
  82
  83 // ----------------------------------------------------------------------------
  84 // wxBrushRefData ctors/dtor
  85 // ----------------------------------------------------------------------------
  86
  87 wxBrushRefData::wxBrushRefData(const wxColour& colour, int style)
  88               : m_colour(colour)
  89 {
  90     m_style = style;
  91
  92     m_hBrush = NULL;
  93 }
  94
  95 wxBrushRefData::wxBrushRefData(const wxBitmap& stipple)
  96 {
  97     DoSetStipple(stipple);
  98
  99     m_hBrush = NULL;
 100 }
 101
 102 wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
 103               : wxGDIRefData(),
 104                 m_stipple(data.m_stipple),
 105                 m_colour(data.m_colour)
 106 {
 107     m_style = data.m_style;
 108
 109     // we can't share HBRUSH, we'd need to create another one ourselves
 110     m_hBrush = NULL;
 111 }
 112
 113 wxBrushRefData::~wxBrushRefData()
 114 {
 115     Free();
 116 }
 117
 118 // ----------------------------------------------------------------------------
 119 // wxBrushRefData accesors
 120 // ----------------------------------------------------------------------------
 121
 122 bool wxBrushRefData::operator==(const wxBrushRefData& data) const
 123 {
 124     // don't compare HBRUSHes
 125     return m_style == data.m_style &&
 126            m_colour == data.m_colour &&
 127            m_stipple.IsRefTo(&data.m_stipple);
 128 }
 129
 130 void wxBrushRefData::DoSetStipple(const wxBitmap& stipple)
 131 {
 132     m_stipple = stipple;
 133     m_style = stipple.GetMask() ? wxSTIPPLE_MASK_OPAQUE : wxSTIPPLE;
 134 }
 135
 136 // ----------------------------------------------------------------------------
 137 // wxBrushRefData resource handling
 138 // ----------------------------------------------------------------------------
 139
 140 void wxBrushRefData::Free()
 141 {
 142     if ( m_hBrush )
 143     {
 144         ::DeleteObject(m_hBrush);
 145
 146         m_hBrush = NULL;
 147     }
 148 }
 149
 150 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
 151
 152 static int TranslateHatchStyle(int style)
 153 {
 154     switch ( style )
 155     {
 156         case wxBDIAGONAL_HATCH: return HS_BDIAGONAL;
 157         case wxCROSSDIAG_HATCH: return HS_DIAGCROSS;
 158         case wxFDIAGONAL_HATCH: return HS_FDIAGONAL;
 159         case wxCROSS_HATCH:     return HS_CROSS;
 160         case wxHORIZONTAL_HATCH:return HS_HORIZONTAL;
 161         case wxVERTICAL_HATCH:  return HS_VERTICAL;
 162         default:                return -1;
 163     }
 164 }
 165
 166 #endif // !__WXMICROWIN__ && !__WXWINCE__
 167
 168 HBRUSH wxBrushRefData::GetHBRUSH()
 169 {
 170     if ( !m_hBrush )
 171     {
 172 #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
 173         int hatchStyle = TranslateHatchStyle(m_style);
 174         if ( hatchStyle == -1 )
 175 #endif // !__WXMICROWIN__ && !__WXWINCE__
 176         {
 177             switch ( m_style )
 178             {
 179                 case wxTRANSPARENT:
 180                     m_hBrush = (HBRUSH)::GetStockObject(NULL_BRUSH);
 181                     break;
 182
 183                 case wxSTIPPLE:
 184                     m_hBrush = ::CreatePatternBrush(GetHbitmapOf(m_stipple));
 185                     break;
 186
 187                 case wxSTIPPLE_MASK_OPAQUE:
 188                     m_hBrush = ::CreatePatternBrush((HBITMAP)m_stipple.GetMask()
 189                                                         ->GetMaskBitmap());
 190                     break;
 191
 192                 default:
 193                     wxFAIL_MSG( _T("unknown brush style") );
 194                     // fall through
 195
 196                 case wxSOLID:
 197                     m_hBrush = ::CreateSolidBrush(m_colour.GetPixel());
 198                     break;
 199             }
 200         }
 201 #ifndef __WXWINCE__
 202         else // create a hatched brush
 203         {
 204             m_hBrush = ::CreateHatchBrush(hatchStyle, m_colour.GetPixel());
 205         }
 206 #endif
 207
 208         if ( !m_hBrush )
 209         {
 210             wxLogLastError(_T("CreateXXXBrush()"));
 211         }
 212     }
 213
 214     return m_hBrush;
 215 }
 216
 217 // ============================================================================
 218 // wxBrush implementation
 219 // ============================================================================
 220
 221 // ----------------------------------------------------------------------------
 222 // wxBrush ctors/dtor
 223 // ----------------------------------------------------------------------------
 224
 225 wxBrush::wxBrush()
 226 {
 227 }
 228
 229 wxBrush::wxBrush(const wxColour& col, int style)
 230 {
 231     m_refData = new wxBrushRefData(col, style);
 232 }
 233
 234 wxBrush::wxBrush(const wxBitmap& stipple)
 235 {
 236     m_refData = new wxBrushRefData(stipple);
 237 }
 238
 239 wxBrush::~wxBrush()
 240 {
 241 }
 242
 243 // ----------------------------------------------------------------------------
 244 // wxBrush house keeping stuff
 245 // ----------------------------------------------------------------------------
 246
 247 bool wxBrush::operator==(const wxBrush& brush) const
 248 {
 249     const wxBrushRefData *brushData = (wxBrushRefData *)brush.m_refData;
 250
 251     // an invalid brush is considered to be only equal to another invalid brush
 252     return m_refData ? (brushData && *M_BRUSHDATA == *brushData) : !brushData;
 253 }
 254
 255 wxObjectRefData *wxBrush::CreateRefData() const
 256 {
 257     return new wxBrushRefData;
 258 }
 259
 260 wxObjectRefData *wxBrush::CloneRefData(const wxObjectRefData *data) const
 261 {
 262     return new wxBrushRefData(*(const wxBrushRefData *)data);
 263 }
 264
 265 // ----------------------------------------------------------------------------
 266 // wxBrush accessors
 267 // ----------------------------------------------------------------------------
 268
 269 wxColour wxBrush::GetColour() const
 270 {
 271     wxCHECK_MSG( Ok(), wxNullColour, _T("invalid brush") );
 272
 273     return M_BRUSHDATA->GetColour();
 274 }
 275
 276 int wxBrush::GetStyle() const
 277 {
 278     wxCHECK_MSG( Ok(), 0, _T("invalid brush") );
 279
 280     return M_BRUSHDATA->GetStyle();
 281 }
 282
 283 wxBitmap *wxBrush::GetStipple() const
 284 {
 285     wxCHECK_MSG( Ok(), NULL, _T("invalid brush") );
 286
 287     return M_BRUSHDATA->GetStipple();
 288 }
 289
 290 WXHANDLE wxBrush::GetResourceHandle() const
 291 {
 292     wxCHECK_MSG( Ok(), FALSE, _T("invalid brush") );
 293
 294     return (WXHANDLE)M_BRUSHDATA->GetHBRUSH();
 295 }
 296
 297 // ----------------------------------------------------------------------------
 298 // wxBrush setters
 299 // ----------------------------------------------------------------------------
 300
 301 void wxBrush::SetColour(const wxColour& col)
 302 {
 303     AllocExclusive();
 304
 305     M_BRUSHDATA->SetColour(col);
 306 }
 307
 308 void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
 309 {
 310     AllocExclusive();
 311
 312     M_BRUSHDATA->SetColour(wxColour(r, g, b));
 313 }
 314
 315 void wxBrush::SetStyle(int style)
 316 {
 317     AllocExclusive();
 318
 319     M_BRUSHDATA->SetStyle(style);
 320 }
 321
 322 void wxBrush::SetStipple(const wxBitmap& stipple)
 323 {
 324     AllocExclusive();
 325
 326     M_BRUSHDATA->SetStipple(stipple);
 327 }