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