src/msw/bmpbuttn.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        bmpbuttn.cpp
   3 // Purpose:     wxBitmapButton
   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 "bmpbuttn.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 "wx/bmpbuttn.h"
  25     #include "wx/log.h"
  26 #endif
  27
  28 #include "wx/msw/private.h"
  29
  30 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
  31
  32 #define BUTTON_HEIGHT_FACTOR (EDIT_CONTROL_FACTOR * 1.1)
  33
  34 bool wxBitmapButton::Create(wxWindow *parent, wxWindowID id, const wxBitmap& bitmap,
  35            const wxPoint& pos,
  36            const wxSize& size, long style,
  37            const wxValidator& validator,
  38            const wxString& name)
  39 {
  40   m_buttonBitmap = bitmap;
  41   SetName(name);
  42   SetValidator(validator);
  43
  44   parent->AddChild(this);
  45
  46   m_backgroundColour = parent->GetBackgroundColour() ;
  47   m_foregroundColour = parent->GetForegroundColour() ;
  48   m_windowStyle = style;
  49   m_marginX = 0;
  50   m_marginY = 0;
  51
  52   if ( style & wxBU_AUTODRAW )
  53   {
  54     m_marginX = wxDEFAULT_BUTTON_MARGIN;
  55     m_marginY = wxDEFAULT_BUTTON_MARGIN;
  56   }
  57
  58   int x = pos.x;
  59   int y = pos.y;
  60   int width = size.x;
  61   int height = size.y;
  62
  63   if (id == -1)
  64     m_windowId = NewControlId();
  65   else
  66     m_windowId = id;
  67
  68   if ( width == -1 && bitmap.Ok())
  69     width = bitmap.GetWidth() + 2*m_marginX;
  70
  71   if ( height == -1 && bitmap.Ok())
  72     height = bitmap.GetHeight() + 2*m_marginY;
  73
  74   m_hWnd = (WXHWND)CreateWindowEx
  75                    (
  76                     0,
  77                     wxT("BUTTON"),
  78                     wxT(""),
  79                     WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_OWNERDRAW ,
  80                     0, 0, 0, 0,
  81                     GetWinHwnd(parent),
  82                     (HMENU)m_windowId,
  83                     wxGetInstance(),
  84                     NULL
  85                    );
  86
  87   // Subclass again for purposes of dialog editing mode
  88   SubclassWin(m_hWnd);
  89
  90   SetFont(parent->GetFont()) ;
  91
  92   SetSize(x, y, width, height);
  93
  94   return TRUE;
  95 }
  96
  97 void wxBitmapButton::SetBitmapLabel(const wxBitmap& bitmap)
  98 {
  99   m_buttonBitmap = bitmap;
 100 }
 101
 102 bool wxBitmapButton::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 103 {
 104 #if defined(__WIN95__)
 105     long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 106     if (style & BS_BITMAP)
 107     {
 108         // Let default procedure draw the bitmap, which is defined
 109         // in the Windows resource.
 110         return FALSE;
 111     }
 112 #endif
 113
 114     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 115
 116     // choose the bitmap to use depending on the buttons state
 117     wxBitmap* bitmap;
 118
 119     UINT state = lpDIS->itemState;
 120     bool isSelected = (state & ODS_SELECTED) != 0;
 121     if ( isSelected && m_buttonBitmapSelected.Ok() )
 122         bitmap = &m_buttonBitmapSelected;
 123     else if ((state & ODS_FOCUS) && m_buttonBitmapFocus.Ok())
 124         bitmap = &m_buttonBitmapFocus;
 125     else if ((state & ODS_DISABLED) && m_buttonBitmapDisabled.Ok())
 126         bitmap = &m_buttonBitmapDisabled;
 127     else
 128         bitmap = &m_buttonBitmap;
 129
 130     if ( !bitmap->Ok() )
 131         return FALSE;
 132
 133     // draw it on the memory DC
 134     HDC hDC = lpDIS->hDC;
 135     HDC memDC = ::CreateCompatibleDC(hDC);
 136
 137     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 138
 139     if (!old)
 140     {
 141         wxLogLastError(_T("SelectObject"));
 142
 143         return FALSE;
 144     }
 145
 146     int x = lpDIS->rcItem.left;
 147     int y = lpDIS->rcItem.top;
 148     int width = lpDIS->rcItem.right - x;
 149     int height = lpDIS->rcItem.bottom - y;
 150
 151     int wBmp = bitmap->GetWidth(),
 152         hBmp = bitmap->GetHeight();
 153
 154     // Draw the face, if auto-drawing
 155     bool autoDraw = (GetWindowStyleFlag() & wxBU_AUTODRAW) != 0;
 156     if ( autoDraw )
 157     {
 158         DrawFace((WXHDC) hDC,
 159                  lpDIS->rcItem.left, lpDIS->rcItem.top,
 160                  lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 161                  isSelected);
 162     }
 163
 164     // Centre the bitmap in the control area
 165     int x1 = x + (width - wBmp) / 2;
 166     int y1 = y + (height - hBmp) / 2;
 167
 168     if ( isSelected && autoDraw )
 169     {
 170         x1++;
 171         y1++;
 172     }
 173
 174     BOOL ok;
 175     wxMask *mask = bitmap->GetMask();
 176     if ( mask )
 177     {
 178         // the fg ROP is applied for the pixels of the mask bitmap which are 1
 179         // (for a wxMask this means that this is a non transparent pixel), the
 180         // bg ROP is applied for all the others
 181         ok = ::MaskBlt(
 182                        hDC, x1, y1, wBmp, hBmp,                 // dst
 183                        memDC, 0, 0,                             // src
 184                        (HBITMAP)mask->GetMaskBitmap(), 0, 0,    // mask
 185                        MAKEROP4(SRCCOPY,                        // fg ROP
 186                                 SRCPAINT)                       // bg ROP
 187                       );
 188     }
 189     else
 190     {
 191         ok = ::BitBlt(hDC, x1, y1, wBmp, hBmp,  // dst
 192                       memDC, 0, 0,              // src
 193                       SRCCOPY);                 // ROP
 194     }
 195
 196     if ( !ok )
 197     {
 198         wxLogLastError(_T("Mask/BitBlt()"));
 199     }
 200
 201     if ( (state & ODS_DISABLED) && autoDraw )
 202     {
 203         DrawButtonDisable((WXHDC) hDC,
 204                           lpDIS->rcItem.left, lpDIS->rcItem.top,
 205                           lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 206                           TRUE);
 207     }
 208     else if ( (state & ODS_FOCUS) && autoDraw )
 209     {
 210         DrawButtonFocus((WXHDC) hDC,
 211                         lpDIS->rcItem.left,
 212                         lpDIS->rcItem.top,
 213                         lpDIS->rcItem.right,
 214                         lpDIS->rcItem.bottom,
 215                         isSelected);
 216     }
 217
 218     ::SelectObject(memDC, old);
 219
 220     ::DeleteDC(memDC);
 221
 222     return TRUE;
 223 }
 224
 225 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 226 {
 227     HPEN oldp;
 228     HBRUSH oldb ;
 229
 230     HPEN penBorder;
 231     HPEN penLight;
 232     HPEN penShadow;
 233     HBRUSH brushFace;
 234     COLORREF ms_color;
 235
 236     ms_color = GetSysColor(COLOR_WINDOWFRAME) ;
 237     penBorder = CreatePen(PS_SOLID,0,ms_color) ;
 238
 239     ms_color = GetSysColor(COLOR_BTNSHADOW) ;
 240     penShadow = CreatePen(PS_SOLID,0,ms_color) ;
 241
 242     ms_color = GetSysColor(COLOR_BTNHIGHLIGHT) ;
 243     penLight = CreatePen(PS_SOLID,0,ms_color) ;
 244
 245     ms_color = GetSysColor(COLOR_BTNFACE) ;
 246     brushFace = CreateSolidBrush(ms_color) ;
 247
 248     oldp = (HPEN) SelectObject( (HDC) dc, GetStockObject( NULL_PEN ) ) ;
 249     oldb = (HBRUSH) SelectObject( (HDC) dc, brushFace ) ;
 250     Rectangle( (HDC) dc, left, top, right, bottom ) ;
 251     SelectObject( (HDC) dc, penBorder) ;
 252     MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
 253     MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
 254     MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 255     MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 256
 257     SelectObject( (HDC) dc, penShadow) ;
 258     if (sel)
 259     {
 260         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 261         LineTo((HDC) dc,  left+1    ,top+1) ;
 262         LineTo((HDC) dc,  right-2   ,top+1) ;
 263     }
 264     else
 265     {
 266         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 267         LineTo((HDC) dc,  right-2   ,bottom-2) ;
 268         LineTo((HDC) dc,  right-2   ,top) ;
 269         MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL) ;
 270         LineTo((HDC) dc,  right-3   ,bottom-3) ;
 271         LineTo((HDC) dc,  right-3   ,top+1) ;
 272
 273         SelectObject( (HDC) dc, penLight) ;
 274
 275         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 276         LineTo((HDC) dc,  left+1    ,top+1) ;
 277         LineTo((HDC) dc,  right-2   ,top+1) ;
 278     }
 279     SelectObject((HDC) dc,oldp) ;
 280     SelectObject((HDC) dc,oldb) ;
 281
 282     DeleteObject(penBorder);
 283     DeleteObject(penLight);
 284     DeleteObject(penShadow);
 285     DeleteObject(brushFace);
 286 }
 287
 288 // VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
 289 #define FOCUS_MARGIN 3
 290
 291 void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 292 {
 293     RECT rect;
 294     rect.left = left;
 295     rect.top = top;
 296     rect.right = right;
 297     rect.bottom = bottom;
 298     InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN ) ;
 299     if ( sel )
 300         OffsetRect( &rect, 1, 1 ) ;
 301     DrawFocusRect( (HDC) dc, &rect ) ;
 302 }
 303
 304 extern HBRUSH wxDisableButtonBrush;
 305 void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
 306 {
 307     HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush ) ;
 308
 309     // VZ: what's this?? there is no such ROP AFAIK
 310 #ifdef __SALFORDC__
 311     DWORD dwRop = 0xFA0089L;
 312 #else
 313     DWORD dwRop = 0xFA0089UL;
 314 #endif
 315
 316     if ( with_marg )
 317     {
 318         left += m_marginX;
 319         top += m_marginY;
 320         right -= 2 * m_marginX;
 321         bottom -= 2 * m_marginY;
 322     }
 323
 324     ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
 325
 326     ::SelectObject( (HDC) dc, old ) ;
 327 }
 328
 329 void wxBitmapButton::SetDefault()
 330 {
 331     wxButton::SetDefault();
 332 }