src/msw/brush.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #ifdef __GNUG__
  13 #pragma implementation "brush.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/brush.h"
  30 #endif
  31
  32 #include "wx/msw/private.h"
  33
  34 #include "assert.h"
  35
  36 #if !USE_SHARED_LIBRARIES
  37 IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)
  38 #endif
  39
  40 wxBrushRefData::wxBrushRefData(void)
  41 {
  42   m_style = wxSOLID;
  43 //  m_stipple = NULL ;
  44   m_hBrush = 0;
  45 }
  46
  47 wxBrushRefData::~wxBrushRefData(void)
  48 {
  49         if ( m_hBrush )
  50                 ::DeleteObject((HBRUSH) m_hBrush);
  51 }
  52
  53 // Brushes
  54 wxBrush::wxBrush(void)
  55 {
  56   if ( wxTheBrushList )
  57     wxTheBrushList->AddBrush(this);
  58 }
  59
  60 wxBrush::~wxBrush()
  61 {
  62     if (wxTheBrushList)
  63         wxTheBrushList->RemoveBrush(this);
  64 }
  65
  66 wxBrush::wxBrush(const wxColour& col, int Style)
  67 {
  68   m_refData = new wxBrushRefData;
  69
  70   M_BRUSHDATA->m_colour = col;
  71   M_BRUSHDATA->m_style = Style;
  72   M_BRUSHDATA->m_hBrush = 0;
  73
  74   RealizeResource();
  75
  76   if ( wxTheBrushList )
  77     wxTheBrushList->AddBrush(this);
  78 }
  79
  80 wxBrush::wxBrush(const wxString& col, int Style)
  81 {
  82   m_refData = new wxBrushRefData;
  83
  84   M_BRUSHDATA->m_colour = col;
  85   M_BRUSHDATA->m_style = Style;
  86   M_BRUSHDATA->m_hBrush = 0;
  87
  88   RealizeResource();
  89
  90   if ( wxTheBrushList )
  91     wxTheBrushList->AddBrush(this);
  92 }
  93
  94 wxBrush::wxBrush(const wxBitmap& stipple)
  95 {
  96   m_refData = new wxBrushRefData;
  97
  98   M_BRUSHDATA->m_style = wxSTIPPLE;
  99   M_BRUSHDATA->m_stipple = stipple;
 100   M_BRUSHDATA->m_hBrush = 0;
 101
 102   RealizeResource();
 103
 104   if ( wxTheBrushList )
 105     wxTheBrushList->AddBrush(this);
 106 }
 107
 108 bool wxBrush::RealizeResource(void)
 109 {
 110   if (M_BRUSHDATA && (M_BRUSHDATA->m_hBrush == 0))
 111   {
 112     if (M_BRUSHDATA->m_style==wxTRANSPARENT)
 113     {
 114       M_BRUSHDATA->m_hBrush = (WXHBRUSH) ::GetStockObject(NULL_BRUSH);
 115       return TRUE;
 116     }
 117     COLORREF ms_colour = 0 ;
 118
 119     ms_colour = M_BRUSHDATA->m_colour.GetPixel() ;
 120
 121     switch (M_BRUSHDATA->m_style)
 122     {
 123 /****
 124     // Don't reset cbrush, wxTRANSPARENT is handled by wxBrush::SelectBrush()
 125     // this could save (many) time if frequently switching from
 126     // wxSOLID to wxTRANSPARENT, because Create... is not always called!!
 127     //
 128     // NB August 95: now create and select a Null brush instead.
 129     // This could be optimized as above.
 130     case wxTRANSPARENT:
 131       M_BRUSHDATA->m_hBrush = NULL;  // Must always select a suitable background brush
 132                       // - could choose white always for a quick solution
 133       break;
 134 ***/
 135       case wxBDIAGONAL_HATCH:
 136         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_BDIAGONAL,ms_colour) ;
 137         break ;
 138       case wxCROSSDIAG_HATCH:
 139         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_DIAGCROSS,ms_colour) ;
 140         break ;
 141       case wxFDIAGONAL_HATCH:
 142         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_FDIAGONAL,ms_colour) ;
 143         break ;
 144       case wxCROSS_HATCH:
 145         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_CROSS,ms_colour) ;
 146         break ;
 147       case wxHORIZONTAL_HATCH:
 148         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_HORIZONTAL,ms_colour) ;
 149         break ;
 150       case wxVERTICAL_HATCH:
 151         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateHatchBrush(HS_VERTICAL,ms_colour) ;
 152         break ;
 153       case wxSTIPPLE:
 154         if (M_BRUSHDATA->m_stipple.Ok())
 155           M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreatePatternBrush((HBITMAP) M_BRUSHDATA->m_stipple.GetHBITMAP()) ;
 156         else
 157           M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateSolidBrush(ms_colour) ;
 158         break ;
 159       case wxSOLID:
 160       default:
 161         M_BRUSHDATA->m_hBrush = (WXHBRUSH) CreateSolidBrush(ms_colour) ;
 162         break;
 163     }
 164 #ifdef WXDEBUG_CREATE
 165     if (M_BRUSHDATA->m_hBrush==NULL) wxError("Cannot create brush","Internal error") ;
 166 #endif
 167     return TRUE;
 168   }
 169   else
 170     return FALSE;
 171 }
 172
 173 WXHANDLE wxBrush::GetResourceHandle(void)
 174 {
 175   return (WXHANDLE) M_BRUSHDATA->m_hBrush;
 176 }
 177
 178 bool wxBrush::FreeResource(bool force)
 179 {
 180   if (M_BRUSHDATA && (M_BRUSHDATA->m_hBrush != 0))
 181   {
 182     DeleteObject((HBRUSH) M_BRUSHDATA->m_hBrush);
 183     M_BRUSHDATA->m_hBrush = 0;
 184     return TRUE;
 185   }
 186   else return FALSE;
 187 }
 188
 189 /*
 190 bool wxBrush::UseResource(void)
 191 {
 192   IncrementResourceUsage();
 193   return TRUE;
 194 }
 195
 196 bool wxBrush::ReleaseResource(void)
 197 {
 198   DecrementResourceUsage();
 199   return TRUE;
 200 }
 201 */
 202
 203 bool wxBrush::IsFree(void)
 204 {
 205   return (M_BRUSHDATA && (M_BRUSHDATA->m_hBrush == 0));
 206 }
 207
 208 void wxBrush::SetColour(const wxColour& col)
 209 {
 210   if ( !M_BRUSHDATA )
 211         m_refData = new wxBrushRefData;
 212
 213   M_BRUSHDATA->m_colour = col;
 214
 215   if (FreeResource())
 216     RealizeResource();
 217 }
 218
 219 void wxBrush::SetColour(const wxString& col)
 220 {
 221   if ( !M_BRUSHDATA )
 222         m_refData = new wxBrushRefData;
 223
 224   M_BRUSHDATA->m_colour = col;
 225
 226   if (FreeResource())
 227     RealizeResource();
 228 }
 229
 230 void wxBrush::SetColour(const unsigned char r, const unsigned char g, const unsigned char b)
 231 {
 232   if ( !M_BRUSHDATA )
 233         m_refData = new wxBrushRefData;
 234
 235   M_BRUSHDATA->m_colour.Set(r, g, b);
 236
 237   if (FreeResource())
 238     RealizeResource();
 239 }
 240
 241 void wxBrush::SetStyle(int Style)
 242 {
 243   if ( !M_BRUSHDATA )
 244         m_refData = new wxBrushRefData;
 245
 246   M_BRUSHDATA->m_style = Style;
 247
 248   if (FreeResource())
 249     RealizeResource();
 250 }
 251
 252 void wxBrush::SetStipple(const wxBitmap& Stipple)
 253 {
 254   if ( !M_BRUSHDATA )
 255         m_refData = new wxBrushRefData;
 256
 257   M_BRUSHDATA->m_stipple = Stipple;
 258
 259   if (FreeResource())
 260     RealizeResource();
 261 }
 262
 263