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
 182         wxColour colBg = GetBackgroundColour();
 183         HBRUSH hbrBackground =
 184             ::CreateSolidBrush(RGB(colBg.Red(), colBg.Green(), colBg.Blue()));
 185         HBRUSH hbrOld = (HBRUSH)::SelectObject(hDC, hbrBackground);
 186
 187         ok = ::MaskBlt(
 188                        hDC, x1, y1, wBmp, hBmp,                 // dst
 189                        memDC, 0, 0,                             // src
 190                        (HBITMAP)mask->GetMaskBitmap(), 0, 0,    // mask
 191                        MAKEROP4(SRCCOPY,                        // fg ROP
 192                                 PATCOPY)                        // bg ROP
 193                       );
 194
 195         ::SelectObject(hDC, hbrOld);
 196         ::DeleteObject(hbrBackground);
 197     }
 198     else
 199     {
 200         ok = ::BitBlt(hDC, x1, y1, wBmp, hBmp,  // dst
 201                       memDC, 0, 0,              // src
 202                       SRCCOPY);                 // ROP
 203     }
 204
 205     if ( !ok )
 206     {
 207         wxLogLastError(_T("Mask/BitBlt()"));
 208     }
 209
 210     if ( (state & ODS_DISABLED) && autoDraw )
 211     {
 212         DrawButtonDisable((WXHDC) hDC,
 213                           lpDIS->rcItem.left, lpDIS->rcItem.top,
 214                           lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 215                           TRUE);
 216     }
 217     else if ( (state & ODS_FOCUS) && autoDraw )
 218     {
 219         DrawButtonFocus((WXHDC) hDC,
 220                         lpDIS->rcItem.left,
 221                         lpDIS->rcItem.top,
 222                         lpDIS->rcItem.right,
 223                         lpDIS->rcItem.bottom,
 224                         isSelected);
 225     }
 226
 227     ::SelectObject(memDC, old);
 228
 229     ::DeleteDC(memDC);
 230
 231     return TRUE;
 232 }
 233
 234 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 235 {
 236     HPEN oldp;
 237     HBRUSH oldb ;
 238
 239     HPEN penBorder;
 240     HPEN penLight;
 241     HPEN penShadow;
 242     HBRUSH brushFace;
 243     COLORREF ms_color;
 244
 245     ms_color = GetSysColor(COLOR_WINDOWFRAME) ;
 246     penBorder = CreatePen(PS_SOLID,0,ms_color) ;
 247
 248     ms_color = GetSysColor(COLOR_BTNSHADOW) ;
 249     penShadow = CreatePen(PS_SOLID,0,ms_color) ;
 250
 251     ms_color = GetSysColor(COLOR_BTNHIGHLIGHT) ;
 252     penLight = CreatePen(PS_SOLID,0,ms_color) ;
 253
 254     ms_color = GetSysColor(COLOR_BTNFACE) ;
 255     brushFace = CreateSolidBrush(ms_color) ;
 256
 257     oldp = (HPEN) SelectObject( (HDC) dc, GetStockObject( NULL_PEN ) ) ;
 258     oldb = (HBRUSH) SelectObject( (HDC) dc, brushFace ) ;
 259     Rectangle( (HDC) dc, left, top, right, bottom ) ;
 260     SelectObject( (HDC) dc, penBorder) ;
 261     MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
 262     MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
 263     MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 264     MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 265
 266     SelectObject( (HDC) dc, penShadow) ;
 267     if (sel)
 268     {
 269         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 270         LineTo((HDC) dc,  left+1    ,top+1) ;
 271         LineTo((HDC) dc,  right-2   ,top+1) ;
 272     }
 273     else
 274     {
 275         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 276         LineTo((HDC) dc,  right-2   ,bottom-2) ;
 277         LineTo((HDC) dc,  right-2   ,top) ;
 278         MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL) ;
 279         LineTo((HDC) dc,  right-3   ,bottom-3) ;
 280         LineTo((HDC) dc,  right-3   ,top+1) ;
 281
 282         SelectObject( (HDC) dc, penLight) ;
 283
 284         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 285         LineTo((HDC) dc,  left+1    ,top+1) ;
 286         LineTo((HDC) dc,  right-2   ,top+1) ;
 287     }
 288     SelectObject((HDC) dc,oldp) ;
 289     SelectObject((HDC) dc,oldb) ;
 290
 291     DeleteObject(penBorder);
 292     DeleteObject(penLight);
 293     DeleteObject(penShadow);
 294     DeleteObject(brushFace);
 295 }
 296
 297 // VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
 298 #define FOCUS_MARGIN 3
 299
 300 void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 301 {
 302     RECT rect;
 303     rect.left = left;
 304     rect.top = top;
 305     rect.right = right;
 306     rect.bottom = bottom;
 307     InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN ) ;
 308     if ( sel )
 309         OffsetRect( &rect, 1, 1 ) ;
 310     DrawFocusRect( (HDC) dc, &rect ) ;
 311 }
 312
 313 extern HBRUSH wxDisableButtonBrush;
 314 void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
 315 {
 316     HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush ) ;
 317
 318     // VZ: what's this?? there is no such ROP AFAIK
 319 #ifdef __SALFORDC__
 320     DWORD dwRop = 0xFA0089L;
 321 #else
 322     DWORD dwRop = 0xFA0089UL;
 323 #endif
 324
 325     if ( with_marg )
 326     {
 327         left += m_marginX;
 328         top += m_marginY;
 329         right -= 2 * m_marginX;
 330         bottom -= 2 * m_marginY;
 331     }
 332
 333     ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
 334
 335     ::SelectObject( (HDC) dc, old ) ;
 336 }
 337
 338 void wxBitmapButton::SetDefault()
 339 {
 340     wxButton::SetDefault();
 341 }