src/msw/statbmp.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        statbmp.cpp
   3 // Purpose:     wxStaticBitmap
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "statbmp.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_STATBMP
  32
  33 #include "wx/window.h"
  34 #include "wx/msw/private.h"
  35
  36 #ifndef WX_PRECOMP
  37     #include "wx/icon.h"
  38     #include "wx/statbmp.h"
  39 #endif
  40
  41 #include <stdio.h>
  42
  43 // ---------------------------------------------------------------------------
  44 // macors
  45 // ---------------------------------------------------------------------------
  46
  47 #if wxUSE_EXTENDED_RTTI
  48 WX_DEFINE_FLAGS( wxStaticBitmapStyle )
  49
  50 wxBEGIN_FLAGS( wxStaticBitmapStyle )
  51     // new style border flags, we put them first to
  52     // use them for streaming out
  53     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  54     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  55     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  56     wxFLAGS_MEMBER(wxBORDER_RAISED)
  57     wxFLAGS_MEMBER(wxBORDER_STATIC)
  58     wxFLAGS_MEMBER(wxBORDER_NONE)
  59
  60     // old style border flags
  61     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  62     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  63     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  64     wxFLAGS_MEMBER(wxRAISED_BORDER)
  65     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  66     wxFLAGS_MEMBER(wxBORDER)
  67
  68     // standard window styles
  69     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  70     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  71     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  72     wxFLAGS_MEMBER(wxWANTS_CHARS)
  73     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  74     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  75     wxFLAGS_MEMBER(wxVSCROLL)
  76     wxFLAGS_MEMBER(wxHSCROLL)
  77
  78 wxEND_FLAGS( wxStaticBitmapStyle )
  79
  80 IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBitmap, wxControl,"wx/statbmp.h")
  81
  82 wxBEGIN_PROPERTIES_TABLE(wxStaticBitmap)
  83     wxPROPERTY_FLAGS( WindowStyle , wxStaticBitmapStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  84 wxEND_PROPERTIES_TABLE()
  85
  86 wxBEGIN_HANDLERS_TABLE(wxStaticBitmap)
  87 wxEND_HANDLERS_TABLE()
  88
  89 wxCONSTRUCTOR_5( wxStaticBitmap, wxWindow* , Parent , wxWindowID , Id , wxBitmap, Bitmap, wxPoint , Position , wxSize , Size )
  90
  91 #else
  92 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  93 #endif
  94
  95 /*
  96         TODO PROPERTIES :
  97                 bitmap
  98 */
  99
 100 // ===========================================================================
 101 // implementation
 102 // ===========================================================================
 103
 104 // ---------------------------------------------------------------------------
 105 // wxStaticBitmap
 106 // ---------------------------------------------------------------------------
 107
 108 // we may have either bitmap or icon: if a bitmap with mask is passed, we
 109 // will transform it to an icon ourselves because otherwise the mask will
 110 // be ignored by Windows
 111 // note that this function will create a new object every time
 112 // it is called even if the image needs no conversion
 113
 114 #ifndef __WIN16__
 115
 116 static wxGDIImage* ConvertImage( const wxGDIImage& bitmap )
 117 {
 118     bool isIcon = bitmap.IsKindOf( CLASSINFO(wxIcon) );
 119
 120     if( !isIcon )
 121     {
 122         wxASSERT_MSG( wxDynamicCast(&bitmap, wxBitmap),
 123                       _T("not an icon and not a bitmap?") );
 124
 125         const wxBitmap& bmp = (const wxBitmap&)bitmap;
 126         wxMask *mask = bmp.GetMask();
 127         if ( mask && mask->GetMaskBitmap() )
 128         {
 129             wxIcon* icon = new wxIcon;
 130             icon->CopyFromBitmap(bmp);
 131
 132             return icon;
 133         }
 134
 135         return new wxBitmap( bmp );
 136     }
 137
 138     // copying a bitmap is a cheap operation
 139     return new wxIcon( (const wxIcon&)bitmap );
 140 }
 141
 142 #endif
 143
 144 bool wxStaticBitmap::Create(wxWindow *parent,
 145                             wxWindowID id,
 146                             const wxGDIImage& bitmap,
 147                             const wxPoint& pos,
 148                             const wxSize& size,
 149                             long style,
 150                             const wxString& name)
 151 {
 152     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
 153         return FALSE;
 154
 155     // we may have either bitmap or icon: if a bitmap with mask is passed, we
 156     // will transform it to an icon ourselves because otherwise the mask will
 157     // be ignored by Windows
 158     wxGDIImage *image = (wxGDIImage *)NULL;
 159     m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
 160
 161 #ifdef __WIN16__
 162     wxASSERT_MSG( !m_isIcon, "Icons are not supported in wxStaticBitmap under WIN16." );
 163     image = &bitmap;
 164 #else // Win32
 165     image = ConvertImage( bitmap );
 166     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 167 #endif // Win16/32
 168
 169     // create the native control
 170     if ( !MSWCreateControl(
 171 #ifdef __WIN32__
 172                            _T("STATIC"),
 173 #else // Win16
 174                            _T("BUTTON"),
 175 #endif // Win32/16
 176                            wxEmptyString, pos, size) )
 177     {
 178         // control creation failed
 179         return FALSE;
 180     }
 181
 182     // no need to delete the new image
 183     SetImageNoCopy(image);
 184
 185     return TRUE;
 186 }
 187
 188 wxBorder wxStaticBitmap::GetDefaultBorder() const
 189 {
 190     return wxBORDER_NONE;
 191 }
 192
 193 WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
 194 {
 195     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 196
 197 #ifdef __WIN32__
 198     // what kind of control are we?
 199     msStyle |= m_isIcon ? SS_ICON : SS_BITMAP;
 200
 201     // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
 202     // fit to its size -- this is unexpected and doesn't happen in other ports
 203     msStyle |= SS_CENTERIMAGE;
 204 #else // Win16
 205     msStyle |= BS_OWNERDRAW;
 206 #endif // Win32/16
 207
 208     return msStyle;
 209 }
 210
 211 bool wxStaticBitmap::ImageIsOk() const
 212 {
 213     return m_image && m_image->Ok();
 214 }
 215
 216 void wxStaticBitmap::Free()
 217 {
 218     delete m_image;
 219
 220     m_image = NULL;
 221 }
 222
 223 wxSize wxStaticBitmap::DoGetBestSize() const
 224 {
 225     // reuse the current size (as wxWindow does) instead of using some
 226     // arbitrary default size (as wxControl, our immediate base class, does)
 227     return wxWindow::DoGetBestSize();
 228 }
 229
 230 void wxStaticBitmap::SetImage( const wxGDIImage* image )
 231 {
 232     wxGDIImage* convertedImage = ConvertImage( *image );
 233     SetImageNoCopy( convertedImage );
 234 }
 235
 236 void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)
 237 {
 238     Free();
 239
 240     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 241     // the image has already been copied
 242     m_image = image;
 243
 244     int x, y;
 245     int w, h;
 246     GetPosition(&x, &y);
 247     GetSize(&w, &h);
 248
 249 #ifdef __WIN32__
 250     HANDLE handle = (HANDLE)m_image->GetHandle();
 251     LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
 252     ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
 253                      ( m_isIcon ? SS_ICON : SS_BITMAP ) );
 254     ::SendMessage(GetHwnd(), STM_SETIMAGE,
 255                   m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
 256 #endif // Win32
 257
 258     if ( ImageIsOk() )
 259     {
 260         int width = image->GetWidth(),
 261             height = image->GetHeight();
 262         if ( width && height )
 263         {
 264             w = width;
 265             h = height;
 266
 267             ::MoveWindow(GetHwnd(), x, y, width, height, FALSE);
 268         }
 269     }
 270
 271     RECT rect;
 272     rect.left   = x;
 273     rect.top    = y;
 274     rect.right  = x + w;
 275     rect.bottom = y + h;
 276     InvalidateRect(GetHwndOf(GetParent()), &rect, TRUE);
 277 }
 278
 279 // under Win32 we use the standard static control style for this
 280 #ifdef __WIN16__
 281 bool wxStaticBitmap::MSWOnDraw(WXDRAWITEMSTRUCT *item)
 282 {
 283     LPDRAWITEMSTRUCT lpDIS = (LPDRAWITEMSTRUCT) item;
 284
 285     wxCHECK_MSG( !m_isIcon, FALSE, _T("icons not supported in wxStaticBitmap") );
 286
 287     wxBitmap* bitmap = (wxBitmap *)m_image;
 288     if ( !bitmap->Ok() )
 289         return FALSE;
 290
 291     HDC hDC = lpDIS->hDC;
 292     HDC memDC = ::CreateCompatibleDC(hDC);
 293
 294     HBITMAP old = (HBITMAP) ::SelectObject(memDC, (HBITMAP) bitmap->GetHBITMAP());
 295
 296     if (!old)
 297         return FALSE;
 298
 299     int x = lpDIS->rcItem.left;
 300     int y = lpDIS->rcItem.top;
 301     int width = lpDIS->rcItem.right - x;
 302     int height = lpDIS->rcItem.bottom - y;
 303
 304     // Centre the bitmap in the control area
 305     int x1 = (int) (x + ((width - bitmap->GetWidth()) / 2));
 306     int y1 = (int) (y + ((height - bitmap->GetHeight()) / 2));
 307
 308     ::BitBlt(hDC, x1, y1, bitmap->GetWidth(), bitmap->GetHeight(), memDC, 0, 0, SRCCOPY);
 309
 310     ::SelectObject(memDC, old);
 311
 312     ::DeleteDC(memDC);
 313
 314     return TRUE;
 315 }
 316 #endif // Win16
 317
 318 // We need this or the control can never be moved e.g. in Dialog Editor.
 319 long wxStaticBitmap::MSWWindowProc(WXUINT nMsg,
 320                                    WXWPARAM wParam,
 321                                    WXLPARAM lParam)
 322 {
 323 #ifndef __WXWINCE__
 324     // Ensure that static items get messages. Some controls don't like this
 325     // message to be intercepted (e.g. RichEdit), hence the tests.
 326     if ( nMsg == WM_NCHITTEST )
 327         return (long)HTCLIENT;
 328 #endif
 329
 330     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
 331 }
 332
 333 #endif // wxUSE_STATBMP