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 #if !USE_SHARED_LIBRARY
  31 IMPLEMENT_DYNAMIC_CLASS(wxBitmapButton, wxButton)
  32 #endif
  33
  34 #define BUTTON_HEIGHT_FACTOR (EDIT_CONTROL_FACTOR * 1.1)
  35
  36 bool wxBitmapButton::Create(wxWindow *parent, wxWindowID id, const wxBitmap& bitmap,
  37            const wxPoint& pos,
  38            const wxSize& size, long style,
  39            const wxValidator& validator,
  40            const wxString& name)
  41 {
  42   m_buttonBitmap = bitmap;
  43   SetName(name);
  44   SetValidator(validator);
  45
  46   parent->AddChild(this);
  47
  48   m_backgroundColour = parent->GetBackgroundColour() ;
  49   m_foregroundColour = parent->GetForegroundColour() ;
  50   m_windowStyle = style;
  51   m_marginX = 0;
  52   m_marginY = 0;
  53
  54   if ( style & wxBU_AUTODRAW )
  55   {
  56     m_marginX = wxDEFAULT_BUTTON_MARGIN;
  57     m_marginY = wxDEFAULT_BUTTON_MARGIN;
  58   }
  59
  60   int x = pos.x;
  61   int y = pos.y;
  62   int width = size.x;
  63   int height = size.y;
  64
  65   if (id == -1)
  66     m_windowId = NewControlId();
  67   else
  68     m_windowId = id;
  69
  70   if ( width == -1 && bitmap.Ok())
  71     width = bitmap.GetWidth() + 2*m_marginX;
  72
  73   if ( height == -1 && bitmap.Ok())
  74     height = bitmap.GetHeight() + 2*m_marginY;
  75
  76   m_hWnd = (WXHWND)CreateWindowEx
  77                    (
  78                     0,
  79                     wxT("BUTTON"),
  80                     wxT(""),
  81                     WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_OWNERDRAW ,
  82                     0, 0, 0, 0,
  83                     GetWinHwnd(parent),
  84                     (HMENU)m_windowId,
  85                     wxGetInstance(),
  86                     NULL
  87                    );
  88
  89   // Subclass again for purposes of dialog editing mode
  90   SubclassWin(m_hWnd);
  91
  92   SetFont(parent->GetFont()) ;
  93
  94   SetSize(x, y, width, height);
  95
  96   return TRUE;
  97 }
  98
  99 void wxBitmapButton::SetBitmapLabel(const wxBitmap& bitmap)
 100 {
 101   m_buttonBitmap = bitmap;
 102 }
 103
 104 bool wxBitmapButton::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 105 {
 106 #if defined(__WIN95__)
 107     long style = GetWindowLong((HWND) GetHWND(), GWL_STYLE);
 108     if (style & BS_BITMAP)
 109     {
 110         // Let default procedure draw the bitmap, which is defined
 111         // in the Windows resource.
 112         return FALSE;
 113     }
 114 #endif
 115
 116     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 117
 118     // choose the bitmap to use depending on the buttons state
 119     wxBitmap* bitmap;
 120
 121     UINT state = lpDIS->itemState;
 122     bool isSelected = (state & ODS_SELECTED) != 0;
 123     if ( isSelected && m_buttonBitmapSelected.Ok() )
 124         bitmap = &m_buttonBitmapSelected;
 125     else if ((state & ODS_FOCUS) && m_buttonBitmapFocus.Ok())
 126         bitmap = &m_buttonBitmapFocus;
 127     else if ((state & ODS_DISABLED) && m_buttonBitmapDisabled.Ok())
 128         bitmap = &m_buttonBitmapDisabled;
 129     else
 130         bitmap = &m_buttonBitmap;
 131
 132     if ( !bitmap->Ok() )
 133         return FALSE;
 134
 135     // draw it on the memory DC
 136     HDC hDC = lpDIS->hDC;
 137     HDC memDC = ::CreateCompatibleDC(hDC);
 138
 139     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 140
 141     if (!old)
 142     {
 143         wxLogLastError(_T("SelectObject"));
 144
 145         return FALSE;
 146     }
 147
 148     int x = lpDIS->rcItem.left;
 149     int y = lpDIS->rcItem.top;
 150     int width = lpDIS->rcItem.right - x;
 151     int height = lpDIS->rcItem.bottom - y;
 152
 153     int wBmp = bitmap->GetWidth(),
 154         hBmp = bitmap->GetHeight();
 155
 156     // Draw the face, if auto-drawing
 157     bool autoDraw = (GetWindowStyleFlag() & wxBU_AUTODRAW) != 0;
 158     if ( autoDraw )
 159     {
 160         DrawFace((WXHDC) hDC,
 161                  lpDIS->rcItem.left, lpDIS->rcItem.top,
 162                  lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 163                  isSelected);
 164     }
 165
 166     // Centre the bitmap in the control area
 167     int x1 = x + (width - wBmp) / 2;
 168     int y1 = y + (height - hBmp) / 2;
 169
 170     if ( isSelected && autoDraw )
 171     {
 172         x1++;
 173         y1++;
 174     }
 175
 176     BOOL ok;
 177     wxMask *mask = bitmap->GetMask();
 178     if ( mask )
 179     {
 180         // the fg ROP is applied for the pixels of the mask bitmap which are 1
 181         // (for a wxMask this means that this is a non transparent pixel), the
 182         // bg ROP is applied for all the others
 183         ok = ::MaskBlt(
 184                        hDC, x1, y1, wBmp, hBmp,                 // dst
 185                        memDC, 0, 0,                             // src
 186                        (HBITMAP)mask->GetMaskBitmap(), 0, 0,    // mask
 187                        MAKEROP4(SRCCOPY,                        // fg ROP
 188                                 SRCPAINT)                       // bg ROP
 189                       );
 190     }
 191     else
 192     {
 193         ok = ::BitBlt(hDC, x1, y1, wBmp, hBmp,  // dst
 194                       memDC, 0, 0,              // src
 195                       SRCCOPY);                 // ROP
 196     }
 197
 198     if ( !ok )
 199     {
 200         wxLogLastError(_T("Mask/BitBlt()"));
 201     }
 202
 203     if ( (state & ODS_DISABLED) && autoDraw )
 204     {
 205         DrawButtonDisable((WXHDC) hDC,
 206                           lpDIS->rcItem.left, lpDIS->rcItem.top,
 207                           lpDIS->rcItem.right, lpDIS->rcItem.bottom,
 208                           TRUE);
 209     }
 210     else if ( (state & ODS_FOCUS) && autoDraw )
 211     {
 212         DrawButtonFocus((WXHDC) hDC,
 213                         lpDIS->rcItem.left,
 214                         lpDIS->rcItem.top,
 215                         lpDIS->rcItem.right,
 216                         lpDIS->rcItem.bottom,
 217                         isSelected);
 218     }
 219
 220     ::SelectObject(memDC, old);
 221
 222     ::DeleteDC(memDC);
 223
 224     return TRUE;
 225 }
 226
 227 void wxBitmapButton::DrawFace( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 228 {
 229     HPEN oldp;
 230     HBRUSH oldb ;
 231
 232     HPEN penBorder;
 233     HPEN penLight;
 234     HPEN penShadow;
 235     HBRUSH brushFace;
 236     COLORREF ms_color;
 237
 238     ms_color = GetSysColor(COLOR_WINDOWFRAME) ;
 239     penBorder = CreatePen(PS_SOLID,0,ms_color) ;
 240
 241     ms_color = GetSysColor(COLOR_BTNSHADOW) ;
 242     penShadow = CreatePen(PS_SOLID,0,ms_color) ;
 243
 244     ms_color = GetSysColor(COLOR_BTNHIGHLIGHT) ;
 245     penLight = CreatePen(PS_SOLID,0,ms_color) ;
 246
 247     ms_color = GetSysColor(COLOR_BTNFACE) ;
 248     brushFace = CreateSolidBrush(ms_color) ;
 249
 250     oldp = (HPEN) SelectObject( (HDC) dc, GetStockObject( NULL_PEN ) ) ;
 251     oldb = (HBRUSH) SelectObject( (HDC) dc, brushFace ) ;
 252     Rectangle( (HDC) dc, left, top, right, bottom ) ;
 253     SelectObject( (HDC) dc, penBorder) ;
 254     MoveToEx((HDC) dc,left+1,top,NULL);LineTo((HDC) dc,right-1,top);
 255     MoveToEx((HDC) dc,left,top+1,NULL);LineTo((HDC) dc,left,bottom-1);
 256     MoveToEx((HDC) dc,left+1,bottom-1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 257     MoveToEx((HDC) dc,right-1,top+1,NULL);LineTo((HDC) dc,right-1,bottom-1);
 258
 259     SelectObject( (HDC) dc, penShadow) ;
 260     if (sel)
 261     {
 262         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 263         LineTo((HDC) dc,  left+1    ,top+1) ;
 264         LineTo((HDC) dc,  right-2   ,top+1) ;
 265     }
 266     else
 267     {
 268         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 269         LineTo((HDC) dc,  right-2   ,bottom-2) ;
 270         LineTo((HDC) dc,  right-2   ,top) ;
 271         MoveToEx((HDC) dc,left+2    ,bottom-3   ,NULL) ;
 272         LineTo((HDC) dc,  right-3   ,bottom-3) ;
 273         LineTo((HDC) dc,  right-3   ,top+1) ;
 274
 275         SelectObject( (HDC) dc, penLight) ;
 276
 277         MoveToEx((HDC) dc,left+1    ,bottom-2   ,NULL) ;
 278         LineTo((HDC) dc,  left+1    ,top+1) ;
 279         LineTo((HDC) dc,  right-2   ,top+1) ;
 280     }
 281     SelectObject((HDC) dc,oldp) ;
 282     SelectObject((HDC) dc,oldb) ;
 283
 284     DeleteObject(penBorder);
 285     DeleteObject(penLight);
 286     DeleteObject(penShadow);
 287     DeleteObject(brushFace);
 288 }
 289
 290 // VZ: should be at the very least less than wxDEFAULT_BUTTON_MARGIN
 291 #define FOCUS_MARGIN 3
 292
 293 void wxBitmapButton::DrawButtonFocus( WXHDC dc, int left, int top, int right, int bottom, bool sel )
 294 {
 295     RECT rect;
 296     rect.left = left;
 297     rect.top = top;
 298     rect.right = right;
 299     rect.bottom = bottom;
 300     InflateRect( &rect, - FOCUS_MARGIN, - FOCUS_MARGIN ) ;
 301     if ( sel )
 302         OffsetRect( &rect, 1, 1 ) ;
 303     DrawFocusRect( (HDC) dc, &rect ) ;
 304 }
 305
 306 extern HBRUSH wxDisableButtonBrush;
 307 void wxBitmapButton::DrawButtonDisable( WXHDC dc, int left, int top, int right, int bottom, bool with_marg )
 308 {
 309     HBRUSH  old = (HBRUSH) SelectObject( (HDC) dc, wxDisableButtonBrush ) ;
 310
 311     // VZ: what's this?? there is no such ROP AFAIK
 312 #ifdef __SALFORDC__
 313     DWORD dwRop = 0xFA0089L;
 314 #else
 315     DWORD dwRop = 0xFA0089UL;
 316 #endif
 317
 318     if ( with_marg )
 319     {
 320         left += m_marginX;
 321         top += m_marginY;
 322         right -= 2 * m_marginX;
 323         bottom -= 2 * m_marginY;
 324     }
 325
 326     ::PatBlt( (HDC) dc, left, top, right, bottom, dwRop);
 327
 328     ::SelectObject( (HDC) dc, old ) ;
 329 }
 330
 331 void wxBitmapButton::SetDefault()
 332 {
 333     wxButton::SetDefault();
 334 }