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
  43 #if wxUSE_VALIDATORS
  44   SetValidator(validator);
  45 #endif // wxUSE_VALIDATORS
  46
  47   parent->AddChild(this);
  48
  49   m_backgroundColour = parent->GetBackgroundColour();
  50   m_foregroundColour = parent->GetForegroundColour();
  51   m_windowStyle = style;
  52   m_marginX = 0;
  53   m_marginY = 0;
  54
  55   if ( style & wxBU_AUTODRAW )
  56   {
  57     m_marginX = wxDEFAULT_BUTTON_MARGIN;
  58     m_marginY = wxDEFAULT_BUTTON_MARGIN;
  59   }
  60
  61   int x = pos.x;
  62   int y = pos.y;
  63   int width = size.x;
  64   int height = size.y;
  65
  66   if (id == -1)
  67     m_windowId = NewControlId();
  68   else
  69     m_windowId = id;
  70
  71   if ( width == -1 && bitmap.Ok())
  72     width = bitmap.GetWidth() + 2*m_marginX;
  73
  74   if ( height == -1 && bitmap.Ok())
  75     height = bitmap.GetHeight() + 2*m_marginY;
  76
  77   m_hWnd = (WXHWND)CreateWindowEx
  78                    (
  79                     0,
  80                     wxT("BUTTON"),
  81                     wxT(""),
  82                     WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_OWNERDRAW ,
  83                     0, 0, 0, 0,
  84                     GetWinHwnd(parent),
  85                     (HMENU)m_windowId,
  86                     wxGetInstance(),
  87                     NULL
  88                    );
  89
  90   // Subclass again for purposes of dialog editing mode
  91   SubclassWin(m_hWnd);
  92
  93   SetFont(parent->GetFont());
  94
  95   SetSize(x, y, width, height);
  96
  97   return TRUE;
  98 }
  99
 100 void wxBitmapButton::SetBitmapLabel(const wxBitmap& bitmap)
 101 {
 102   m_buttonBitmap = bitmap;
 103 }
 104
 105 bool wxBitmapButton::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 106 {
 107 #if defined(__WIN95__)
 108     long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 109     if (style & BS_BITMAP)
 110     {
 111         // Let default procedure draw the bitmap, which is defined
 112         // in the Windows resource.
 113         return FALSE;
 114     }
 115 #endif
 116
 117     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 118
 119     // choose the bitmap to use depending on the buttons state
 120     wxBitmap* bitmap;
 121
 122     UINT state = lpDIS->itemState;
 123     bool isSelected = (state & ODS_SELECTED) != 0;
 124     if ( isSelected && m_buttonBitmapSelected.Ok() )
 125         bitmap = &m_buttonBitmapSelected;
 126     else if ((state & ODS_FOCUS) && m_buttonBitmapFocus.Ok())
 127         bitmap = &m_buttonBitmapFocus;
 128     else if ((state & ODS_DISABLED) && m_buttonBitmapDisabled.Ok())
 129         bitmap = &m_buttonBitmapDisabled;
 130     else
 131         bitmap = &m_buttonBitmap;
 132
 133     if ( !bitmap->Ok() )
 134         return FALSE;
 135
 136     // draw it on the memory DC
 137     HDC hDC = lpDIS->hDC;
 138     HDC memDC = ::CreateCompatibleDC(hDC);
 139
 140     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 141
 142     if (!old)
 143     {
 144         wxLogLastError(_T("SelectObject"));
 145
 146         return FALSE;
 147     }
 148
 149     int x = lpDIS->rcItem.left;
 150     int y = lpDIS->rcItem.top;
 151     int width = lpDIS->rcItem.right - x;
 152     int height = lpDIS->rcItem.bottom - y;
 153
 154     int wBmp = bitmap->GetWidth(),
 155         hBmp = bitmap->GetHeight();
 156
 157     // Draw the face, if auto-drawing
 158     bool autoDraw = (GetWindowStyleFlag() & wxBU_AUTODRAW) != 0;
 159     if ( autoDraw )
 160     {
 161         DrawFace((WXHDC) hDC,
 162                  lpDIS->rcItem.left, lpDIS->rcItem.top,
 163                  lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 164                  isSelected);
 165     }
 166
 167     // Centre the bitmap in the control area
 168     int x1 = x + (width - wBmp) / 2;
 169     int y1 = y + (height - hBmp) / 2;
 170
 171     if ( isSelected && autoDraw )
 172     {
 173         x1++;
 174         y1++;
 175     }
 176
 177     BOOL ok;
 178
 179     // no MaskBlt() under Win16
 180 #ifdef __WIN32__
 181     wxMask *mask = bitmap->GetMask();
 182     if ( mask )
 183     {
 184         // the fg ROP is applied for the pixels of the mask bitmap which are 1
 185         // (for a wxMask this means that this is a non transparent pixel), the
 186         // bg ROP is applied for all the others
 187
 188         HBRUSH hbrBackground =
 189             ::CreateSolidBrush(wxColourToRGB(GetBackgroundColour()));
 190         HBRUSH hbrOld = (HBRUSH)::SelectObject(hDC, hbrBackground);
 191
 192         ok = ::MaskBlt(
 193                        hDC, x1, y1, wBmp, hBmp,                 // dst
 194                        memDC, 0, 0,                             // src
 195                        (HBITMAP)mask->GetMaskBitmap(), 0, 0,    // mask
 196                        MAKEROP4(SRCCOPY,                        // fg ROP
 197                                 PATCOPY)                        // bg ROP
 198                       );
 199
 200         ::SelectObject(hDC, hbrOld);
 201         ::DeleteObject(hbrBackground);
 202     }
 203     else
 204     {
 205         // this will make the check below fail and BitBlt() will be used if
 206         // MaskBlt() is not supported (for example, under Win95)
 207         ok = FALSE;
 208     }
 209
 210     if ( !ok )
 211 #endif // Win32
 212     {
 213         ok = ::BitBlt(hDC, x1, y1, wBmp, hBmp,  // dst
 214                       memDC, 0, 0,              // src
 215                       SRCCOPY);                 // ROP
 216     }
 217
 218     if ( !ok )
 219     {
 220         wxLogLastError(_T("Mask/BitBlt()"));
 221     }
 222
 223     if ( (state & ODS_DISABLED) && autoDraw )
 224     {
 225         DrawButtonDisable((WXHDC) hDC,
 226                           lpDIS->rcItem.left, lpDIS->rcItem.top,
 227                           lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 228                           TRUE);
 229     }
 230     else if ( (state & ODS_FOCUS) && autoDraw )
 231     {
 232         DrawButtonFocus((WXHDC) hDC,
 233                         lpDIS->rcItem.left,
 234                         lpDIS->rcItem.top,
 235                         lpDIS->rcItem.right,
 236                         lpDIS->rcItem.bottom,
 237                         isSelected);
 238     }
 239
 240     ::SelectObject(memDC, old);
 241
 242     ::DeleteDC(memDC);
 243
 244     return TRUE;
 245 }
 246
 247 // GRG Feb/2000, support for bmp buttons with Win95/98 standard LNF
 248
 249 #if defined(__WIN95__)
 250
 251 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 252 {
 253     HPEN oldp;
 254     HPEN penHiLight;
 255     HPEN penLight;
 256     HPEN penShadow;
 257     HPEN penDkShadow;
 258     HBRUSH brushFace;
 259
 260     // create needed pens and brush
 261     penHiLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DHILIGHT));
 262     penLight    = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DLIGHT));
 263     penShadow   = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DSHADOW));
 264     penDkShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_3DDKSHADOW));
 265     brushFace   = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
 266
 267     // draw the rectangle
 268     RECT rect;
 269     rect.left   = left;
 270     rect.right  = right;
 271     rect.top    = top;
 272     rect.bottom = bottom;
 273     FillRect((HDC) dc, &rect, brushFace);
 274
 275     // draw the border
 276     oldp = (HPEN) SelectObject( (HDC) dc, sel? penDkShadow : penHiLight);
 277     MoveToEx((HDC) dc, left, top, NULL); LineTo((HDC) dc, right-1, top);
 278     MoveToEx((HDC) dc, left, top+1, NULL); LineTo((HDC) dc, left, bottom-1);
 279
 280     SelectObject( (HDC) dc, sel? penShadow : penLight);
 281     MoveToEx((HDC) dc, left+1, top+1, NULL); LineTo((HDC) dc, right-2, top+1);
 282     MoveToEx((HDC) dc, left+1, top+2, NULL); LineTo((HDC) dc, left+1, bottom-2);
 283
 284     SelectObject( (HDC) dc, sel? penLight : penShadow);
 285     MoveToEx((HDC) dc, left+1, bottom-2, NULL); LineTo((HDC) dc, right-1, bottom-2);
 286     MoveToEx((HDC) dc, right-2, bottom-3, NULL); LineTo((HDC) dc, right-2, top);
 287
 288     SelectObject( (HDC) dc, sel? penHiLight : penDkShadow);
 289     MoveToEx((HDC) dc, left, bottom-1, NULL); LineTo((HDC) dc, right+2, bottom-1);
 290     MoveToEx((HDC) dc, right-1, bottom-2, NULL); LineTo((HDC) dc, right-1, top-1);
 291
 292     // delete allocated resources
 293     SelectObject((HDC) dc,oldp);
 294     DeleteObject(penHiLight);
 295     DeleteObject(penLight);
 296     DeleteObject(penShadow);
 297     DeleteObject(penDkShadow);
 298     DeleteObject(brushFace);
 299 }
 300
 301 #else
 302
 303 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 304 {
 305     HPEN oldp;
 306     HPEN penBorder;
 307     HPEN penLight;
 308     HPEN penShadow;
 309     HBRUSH brushFace;
 310
 311     // create needed pens and brush
 312     penBorder = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_WINDOWFRAME));
 313     penShadow = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));
 314     penLight  = CreatePen(PS_SOLID, 0, GetSysColor(COLOR_BTNHIGHLIGHT));
 315     brushFace = CreateSolidBrush(COLOR_BTNFACE);
 316
 317     // draw the rectangle
 318     RECT rect;
 319     rect.left   = left;
 320     rect.right  = right;
 321     rect.top    = top;
 322     rect.bottom = bottom;
 323     FillRect((HDC) dc, &rect, brushFace);
 324
 325     // draw the border
 326     oldp = (HPEN) SelectObject( (HDC) dc, penBorder);
 327     MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
 328     MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
 329     MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 330     MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 331
 332     SelectObject( (HDC) dc, penShadow);
 333     if (sel)
 334     {
 335         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
 336         LineTo((HDC) dc,  left+1    ,top+1);
 337         LineTo((HDC) dc,  right-2   ,top+1);
 338     }
 339     else
 340     {
 341         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
 342         LineTo((HDC) dc,  right-2   ,bottom-2);
 343         LineTo((HDC) dc,  right-2   ,top);
 344
 345         MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL);
 346         LineTo((HDC) dc,  right-3   ,bottom-3);
 347         LineTo((HDC) dc,  right-3   ,top+1);
 348
 349         SelectObject( (HDC) dc, penLight);
 350
 351         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL);
 352         LineTo((HDC) dc,  left+1    ,top+1);
 353         LineTo((HDC) dc,  right-2   ,top+1);
 354     }
 355
 356     // delete allocated resources
 357     SelectObject((HDC) dc,oldp);
 358     DeleteObject(penBorder);
 359     DeleteObject(penLight);
 360     DeleteObject(penShadow);
 361     DeleteObject(brushFace);
 362 }
 363
 364 #endif // defined(__WIN95__)
 365
 366
 367 // VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
 368 #define FOCUS_MARGIN 3
 369
 370 void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 371 {
 372     RECT rect;
 373     rect.left = left;
 374     rect.top = top;
 375     rect.right = right;
 376     rect.bottom = bottom;
 377     InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN );
 378
 379     // GRG: the focus rectangle should not move when the button is pushed!
 380 /*
 381     if ( sel )
 382         OffsetRect( &rect, 1, 1 );
 383 */
 384     DrawFocusRect( (HDC) dc, &rect );
 385 }
 386
 387 extern HBRUSH wxDisableButtonBrush;
 388 void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
 389 {
 390     HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush );
 391
 392     // VZ: what's this?? there is no such ROP AFAIK
 393 #ifdef __SALFORDC__
 394     DWORD dwRop = 0xFA0089L;
 395 #else
 396     DWORD dwRop = 0xFA0089UL;
 397 #endif
 398
 399     if ( with_marg )
 400     {
 401         left += m_marginX;
 402         top += m_marginY;
 403         right -= 2 * m_marginX;
 404         bottom -= 2 * m_marginY;
 405     }
 406
 407     ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
 408
 409     ::SelectObject( (HDC) dc, old );
 410 }
 411
 412 void wxBitmapButton::SetDefault()
 413 {
 414     wxButton::SetDefault();
 415 }