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 #endif
  26
  27 #include "wx/msw/private.h"
  28
  29 #if !USE_SHARED_LIBRARY
  30 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
  31 #endif
  32
  33 #define BUTTON_HEIGHT_FACTOR (EDIT_CONTROL_FACTOR * 1.1)
  34
  35 bool wxBitmapButton::Create(wxWindow *parent, wxWindowID id, const wxBitmap& bitmap,
  36            const wxPoint& pos,
  37            const wxSize& size, long style,
  38            const wxValidator& validator,
  39            const wxString& name)
  40 {
  41   m_buttonBitmap = bitmap;
  42   SetName(name);
  43   SetValidator(validator);
  44
  45   parent->AddChild(this);
  46
  47   m_backgroundColour = parent->GetBackgroundColour() ;
  48   m_foregroundColour = parent->GetForegroundColour() ;
  49   m_windowStyle = style;
  50   m_marginX = 0;
  51   m_marginY = 0;
  52
  53   if ( style & wxBU_AUTODRAW )
  54   {
  55     m_marginX = wxDEFAULT_BUTTON_MARGIN;
  56     m_marginY = wxDEFAULT_BUTTON_MARGIN;
  57   }
  58
  59   int x = pos.x;
  60   int y = pos.y;
  61   int width = size.x;
  62   int height = size.y;
  63
  64   if (id == -1)
  65     m_windowId = NewControlId();
  66   else
  67     m_windowId = id;
  68
  69   if ( width == -1 && bitmap.Ok())
  70     width = bitmap.GetWidth() + 2*m_marginX;
  71
  72   if ( height == -1 && bitmap.Ok())
  73     height = bitmap.GetHeight() + 2*m_marginY;
  74
  75   m_hWnd = (WXHWND)CreateWindowEx
  76                    (
  77                     0,
  78                     wxT("BUTTON"),
  79                     wxT(""),
  80                     WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_OWNERDRAW ,
  81                     0, 0, 0, 0,
  82                     GetWinHwnd(parent),
  83                     (HMENU)m_windowId,
  84                     wxGetInstance(),
  85                     NULL
  86                    );
  87
  88   // Subclass again for purposes of dialog editing mode
  89   SubclassWin(m_hWnd);
  90
  91   SetFont(parent->GetFont()) ;
  92
  93   SetSize(x, y, width, height);
  94
  95   return TRUE;
  96 }
  97
  98 void wxBitmapButton::SetBitmapLabel(const wxBitmap& bitmap)
  99 {
 100   m_buttonBitmap = bitmap;
 101 }
 102
 103 bool wxBitmapButton::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 104 {
 105 #if defined(__WIN95__)
 106     long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 107     if (style & BS_BITMAP)
 108     {
 109         // Let default procedure draw the bitmap, which is defined
 110         // in the Windows resource.
 111         return FALSE;
 112     }
 113 #endif
 114
 115     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 116
 117     // choose the bitmap to use depending on the buttons state
 118     wxBitmap* bitmap;
 119
 120     UINT state = lpDIS->itemState;
 121     bool isSelected = (state & ODS_SELECTED) != 0;
 122     if ( isSelected && m_buttonBitmapSelected.Ok() )
 123         bitmap = &m_buttonBitmapSelected;
 124     else if ((state & ODS_FOCUS) && m_buttonBitmapFocus.Ok())
 125         bitmap = &m_buttonBitmapFocus;
 126     else if ((state & ODS_DISABLED) && m_buttonBitmapDisabled.Ok())
 127         bitmap = &m_buttonBitmapDisabled;
 128     else
 129         bitmap = &m_buttonBitmap;
 130
 131     if ( !bitmap->Ok() )
 132         return FALSE;
 133
 134     // draw it on the memory DC
 135     HDC hDC = lpDIS->hDC;
 136     HDC memDC = ::CreateCompatibleDC(hDC);
 137
 138     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 139
 140     if (!old)
 141     {
 142         wxLogLastError(_T("SelectObject"));
 143
 144         return FALSE;
 145     }
 146
 147     int x = lpDIS->rcItem.left;
 148     int y = lpDIS->rcItem.top;
 149     int width = lpDIS->rcItem.right - x;
 150     int height = lpDIS->rcItem.bottom - y;
 151
 152     int wBmp = bitmap->GetWidth(),
 153         hBmp = bitmap->GetHeight();
 154
 155     // Draw the face, if auto-drawing
 156     bool autoDraw = (GetWindowStyleFlag() & wxBU_AUTODRAW) != 0;
 157     if ( autoDraw )
 158     {
 159         DrawFace((WXHDC) hDC,
 160                  lpDIS->rcItem.left, lpDIS->rcItem.top,
 161                  lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 162                  isSelected);
 163     }
 164
 165     // Centre the bitmap in the control area
 166     int x1 = x + (width - wBmp) / 2;
 167     int y1 = y + (height - hBmp) / 2;
 168
 169     if ( isSelected && autoDraw )
 170     {
 171         x1++;
 172         y1++;
 173     }
 174
 175     BOOL ok;
 176     wxMask *mask = bitmap->GetMask();
 177     if ( mask )
 178     {
 179         // the fg ROP is applied for the pixels of the mask bitmap which are 1
 180         // (for a wxMask this means that this is a non transparent pixel), the
 181         // bg ROP is applied for all the others
 182         ok = ::MaskBlt(
 183                        hDC, x1, y1, wBmp, hBmp,                 // dst
 184                        memDC, 0, 0,                             // src
 185                        (HBITMAP)mask->GetMaskBitmap(), 0, 0,    // mask
 186                        MAKEROP4(SRCCOPY,                        // fg ROP
 187                                 SRCPAINT)                       // bg ROP
 188                       );
 189     }
 190     else
 191     {
 192         ok = ::BitBlt(hDC, x1, y1, wBmp, hBmp,  // dst
 193                       memDC, 0, 0,              // src
 194                       SRCCOPY);                 // ROP
 195     }
 196
 197     if ( !ok )
 198     {
 199         wxLogLastError(_T("Mask/BitBlt()"));
 200     }
 201
 202     if ( (state & ODS_DISABLED) && autoDraw )
 203     {
 204         DrawButtonDisable((WXHDC) hDC,
 205                           lpDIS->rcItem.left, lpDIS->rcItem.top,
 206                           lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 207                           TRUE);
 208     }
 209     else if ( (state & ODS_FOCUS) && autoDraw )
 210     {
 211         DrawButtonFocus((WXHDC) hDC,
 212                         lpDIS->rcItem.left,
 213                         lpDIS->rcItem.top,
 214                         lpDIS->rcItem.right,
 215                         lpDIS->rcItem.bottom,
 216                         isSelected);
 217     }
 218
 219     ::SelectObject(memDC, old);
 220
 221     ::DeleteDC(memDC);
 222
 223     return TRUE;
 224 }
 225
 226 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 227 {
 228     HPEN oldp;
 229     HBRUSH oldb ;
 230
 231     HPEN penBorder;
 232     HPEN penLight;
 233     HPEN penShadow;
 234     HBRUSH brushFace;
 235     COLORREF ms_color;
 236
 237     ms_color = GetSysColor(COLOR_WINDOWFRAME) ;
 238     penBorder = CreatePen(PS_SOLID,0,ms_color) ;
 239
 240     ms_color = GetSysColor(COLOR_BTNSHADOW) ;
 241     penShadow = CreatePen(PS_SOLID,0,ms_color) ;
 242
 243     ms_color = GetSysColor(COLOR_BTNHIGHLIGHT) ;
 244     penLight = CreatePen(PS_SOLID,0,ms_color) ;
 245
 246     ms_color = GetSysColor(COLOR_BTNFACE) ;
 247     brushFace = CreateSolidBrush(ms_color) ;
 248
 249     oldp = (HPEN) SelectObject( (HDC) dc, GetStockObject( NULL_PEN ) ) ;
 250     oldb = (HBRUSH) SelectObject( (HDC) dc, brushFace ) ;
 251     Rectangle( (HDC) dc, left, top, right, bottom ) ;
 252     SelectObject( (HDC) dc, penBorder) ;
 253     MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
 254     MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
 255     MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 256     MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 257
 258     SelectObject( (HDC) dc, penShadow) ;
 259     if (sel)
 260     {
 261         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 262         LineTo((HDC) dc,  left+1    ,top+1) ;
 263         LineTo((HDC) dc,  right-2   ,top+1) ;
 264     }
 265     else
 266     {
 267         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 268         LineTo((HDC) dc,  right-2   ,bottom-2) ;
 269         LineTo((HDC) dc,  right-2   ,top) ;
 270         MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL) ;
 271         LineTo((HDC) dc,  right-3   ,bottom-3) ;
 272         LineTo((HDC) dc,  right-3   ,top+1) ;
 273
 274         SelectObject( (HDC) dc, penLight) ;
 275
 276         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 277         LineTo((HDC) dc,  left+1    ,top+1) ;
 278         LineTo((HDC) dc,  right-2   ,top+1) ;
 279     }
 280     SelectObject((HDC) dc,oldp) ;
 281     SelectObject((HDC) dc,oldb) ;
 282
 283     DeleteObject(penBorder);
 284     DeleteObject(penLight);
 285     DeleteObject(penShadow);
 286     DeleteObject(brushFace);
 287 }
 288
 289 // VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
 290 #define FOCUS_MARGIN 3
 291
 292 void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 293 {
 294     RECT rect;
 295     rect.left = left;
 296     rect.top = top;
 297     rect.right = right;
 298     rect.bottom = bottom;
 299     InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN ) ;
 300     if ( sel )
 301         OffsetRect( &rect, 1, 1 ) ;
 302     DrawFocusRect( (HDC) dc, &rect ) ;
 303 }
 304
 305 extern HBRUSH wxDisableButtonBrush;
 306 void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
 307 {
 308     HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush ) ;
 309
 310     // VZ: what's this?? there is no such ROP AFAIK
 311 #ifdef __SALFORDC__
 312     DWORD dwRop = 0xFA0089L;
 313 #else
 314     DWORD dwRop = 0xFA0089UL;
 315 #endif
 316
 317     if ( with_marg )
 318     {
 319         left += m_marginX;
 320         top += m_marginY;
 321         right -= 2 * m_marginX;
 322         bottom -= 2 * m_marginY;
 323     }
 324
 325     ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
 326
 327     ::SelectObject( (HDC) dc, old ) ;
 328 }
 329
 330 void wxBitmapButton::SetDefault()
 331 {
 332     wxButton::SetDefault();
 333 }