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 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_STATBMP
  28
  29 #include "wx/window.h"
  30 #include "wx/msw/private.h"
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/icon.h"
  34     #include "wx/statbmp.h"
  35 #endif
  36
  37 #include "wx/sysopt.h"
  38
  39 #include <stdio.h>
  40
  41 // ---------------------------------------------------------------------------
  42 // macors
  43 // ---------------------------------------------------------------------------
  44
  45 #if wxUSE_EXTENDED_RTTI
  46 WX_DEFINE_FLAGS( wxStaticBitmapStyle )
  47
  48 wxBEGIN_FLAGS( wxStaticBitmapStyle )
  49     // new style border flags, we put them first to
  50     // use them for streaming out
  51     wxFLAGS_MEMBER(wxBORDER_SIMPLE)
  52     wxFLAGS_MEMBER(wxBORDER_SUNKEN)
  53     wxFLAGS_MEMBER(wxBORDER_DOUBLE)
  54     wxFLAGS_MEMBER(wxBORDER_RAISED)
  55     wxFLAGS_MEMBER(wxBORDER_STATIC)
  56     wxFLAGS_MEMBER(wxBORDER_NONE)
  57
  58     // old style border flags
  59     wxFLAGS_MEMBER(wxSIMPLE_BORDER)
  60     wxFLAGS_MEMBER(wxSUNKEN_BORDER)
  61     wxFLAGS_MEMBER(wxDOUBLE_BORDER)
  62     wxFLAGS_MEMBER(wxRAISED_BORDER)
  63     wxFLAGS_MEMBER(wxSTATIC_BORDER)
  64     wxFLAGS_MEMBER(wxBORDER)
  65
  66     // standard window styles
  67     wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
  68     wxFLAGS_MEMBER(wxCLIP_CHILDREN)
  69     wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
  70     wxFLAGS_MEMBER(wxWANTS_CHARS)
  71     wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
  72     wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
  73     wxFLAGS_MEMBER(wxVSCROLL)
  74     wxFLAGS_MEMBER(wxHSCROLL)
  75
  76 wxEND_FLAGS( wxStaticBitmapStyle )
  77
  78 IMPLEMENT_DYNAMIC_CLASS_XTI(wxStaticBitmap, wxControl,"wx/statbmp.h")
  79
  80 wxBEGIN_PROPERTIES_TABLE(wxStaticBitmap)
  81     wxPROPERTY_FLAGS( WindowStyle , wxStaticBitmapStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE, 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
  82 wxEND_PROPERTIES_TABLE()
  83
  84 wxBEGIN_HANDLERS_TABLE(wxStaticBitmap)
  85 wxEND_HANDLERS_TABLE()
  86
  87 wxCONSTRUCTOR_5( wxStaticBitmap, wxWindow* , Parent , wxWindowID , Id , wxBitmap, Bitmap, wxPoint , Position , wxSize , Size )
  88
  89 #else
  90 IMPLEMENT_DYNAMIC_CLASS(wxStaticBitmap, wxControl)
  91 #endif
  92
  93 /*
  94     TODO PROPERTIES :
  95         bitmap
  96 */
  97
  98 // ===========================================================================
  99 // implementation
 100 // ===========================================================================
 101
 102 // ---------------------------------------------------------------------------
 103 // wxStaticBitmap
 104 // ---------------------------------------------------------------------------
 105
 106 // we may have either bitmap or icon: if a bitmap with mask is passed, we
 107 // will transform it to an icon ourselves because otherwise the mask will
 108 // be ignored by Windows
 109 // note that this function will create a new object every time
 110 // it is called even if the image needs no conversion
 111
 112 static wxGDIImage* ConvertImage( const wxGDIImage& bitmap )
 113 {
 114     bool isIcon = bitmap.IsKindOf( CLASSINFO(wxIcon) );
 115
 116     if( !isIcon )
 117     {
 118         wxASSERT_MSG( wxDynamicCast(&bitmap, wxBitmap),
 119                       _T("not an icon and not a bitmap?") );
 120
 121         const wxBitmap& bmp = (const wxBitmap&)bitmap;
 122         wxMask *mask = bmp.GetMask();
 123         if ( mask && mask->GetMaskBitmap() )
 124         {
 125             wxIcon* icon = new wxIcon;
 126             icon->CopyFromBitmap(bmp);
 127
 128             return icon;
 129         }
 130
 131         return new wxBitmap( bmp );
 132     }
 133
 134     // copying a bitmap is a cheap operation
 135     return new wxIcon( (const wxIcon&)bitmap );
 136 }
 137
 138 bool wxStaticBitmap::Create(wxWindow *parent,
 139                             wxWindowID id,
 140                             const wxGDIImage& bitmap,
 141                             const wxPoint& pos,
 142                             const wxSize& size,
 143                             long style,
 144                             const wxString& name)
 145 {
 146     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
 147         return false;
 148
 149     // we may have either bitmap or icon: if a bitmap with mask is passed, we
 150     // will transform it to an icon ourselves because otherwise the mask will
 151     // be ignored by Windows
 152     m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
 153
 154     wxGDIImage *image = ConvertImage( bitmap );
 155     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 156
 157     // create the native control
 158     if ( !MSWCreateControl(_T("STATIC"), wxEmptyString, pos, size) )
 159     {
 160         // control creation failed
 161         return false;
 162     }
 163
 164     // no need to delete the new image
 165     SetImageNoCopy(image);
 166
 167     // GetBestSize will work properly now, so set the best size if needed
 168     SetBestSize(size);
 169
 170     return true;
 171 }
 172
 173 wxBorder wxStaticBitmap::GetDefaultBorder() const
 174 {
 175     return wxBORDER_NONE;
 176 }
 177
 178 WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
 179 {
 180     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 181
 182     // what kind of control are we?
 183     msStyle |= m_isIcon ? SS_ICON : SS_BITMAP;
 184
 185     // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
 186     // fit to its size -- this is unexpected and doesn't happen in other ports
 187     //
 188     // and SS_NOTIFY is necessary to receive mouse events
 189     msStyle |= SS_CENTERIMAGE | SS_NOTIFY;
 190
 191     return msStyle;
 192 }
 193
 194 bool wxStaticBitmap::ImageIsOk() const
 195 {
 196     return m_image && m_image->Ok();
 197 }
 198
 199 wxIcon wxStaticBitmap::GetIcon() const
 200 {
 201     wxCHECK_MSG( m_image, wxIcon(), _T("no image in wxStaticBitmap") );
 202
 203     // we can't ask for an icon if all we have is a bitmap
 204     wxCHECK_MSG( m_isIcon, wxIcon(), _T("no icon in this wxStaticBitmap") );
 205
 206     return *(wxIcon *)m_image;
 207 }
 208
 209 wxBitmap wxStaticBitmap::GetBitmap() const
 210 {
 211     if ( m_isIcon )
 212     {
 213         // don't fail because we might have replaced the bitmap with icon
 214         // ourselves internally in ConvertImage() to keep the transparency but
 215         // the user code doesn't know about it so it still can use GetBitmap()
 216         // to retrieve the bitmap
 217         return wxBitmap(GetIcon());
 218     }
 219     else // we have a bitmap
 220     {
 221         wxCHECK_MSG( m_image, wxBitmap(), _T("no image in wxStaticBitmap") );
 222
 223         return *(wxBitmap *)m_image;
 224     }
 225 }
 226
 227 void wxStaticBitmap::Free()
 228 {
 229     delete m_image;
 230
 231     m_image = NULL;
 232 }
 233
 234 wxSize wxStaticBitmap::DoGetBestSize() const
 235 {
 236     if ( ImageIsOk() )
 237     {
 238         wxSize best(m_image->GetWidth(), m_image->GetHeight());
 239         CacheBestSize(best);
 240         return best;
 241     }
 242
 243     // this is completely arbitrary
 244     return wxSize(16, 16);
 245 }
 246
 247 void wxStaticBitmap::SetImage( const wxGDIImage* image )
 248 {
 249     wxGDIImage* convertedImage = ConvertImage( *image );
 250     SetImageNoCopy( convertedImage );
 251     InvalidateBestSize();
 252 }
 253
 254 void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)
 255 {
 256     Free();
 257
 258     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 259     // the image has already been copied
 260     m_image = image;
 261
 262     int x, y;
 263     int w, h;
 264     GetPosition(&x, &y);
 265     GetSize(&w, &h);
 266
 267 #ifdef __WIN32__
 268     HANDLE handle = (HANDLE)m_image->GetHandle();
 269     LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
 270     ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
 271                      ( m_isIcon ? SS_ICON : SS_BITMAP ) );
 272     HGDIOBJ oldHandle = (HGDIOBJ)::SendMessage(GetHwnd(), STM_SETIMAGE,
 273                   m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
 274     // detect if this is still the handle we passed before or
 275     // if the static-control made a copy of the bitmap!
 276     if (m_currentHandle != 0 && oldHandle != (HGDIOBJ) m_currentHandle)
 277     {
 278         // the static control made a copy and we are responsible for deleting it
 279         DeleteObject((HGDIOBJ) oldHandle);
 280     }
 281     m_currentHandle = (WXHANDLE)handle;
 282 #endif // Win32
 283
 284     if ( ImageIsOk() )
 285     {
 286         int width = image->GetWidth(),
 287             height = image->GetHeight();
 288         if ( width && height )
 289         {
 290             w = width;
 291             h = height;
 292
 293             ::MoveWindow(GetHwnd(), x, y, width, height, FALSE);
 294         }
 295     }
 296
 297     RECT rect;
 298     rect.left   = x;
 299     rect.top    = y;
 300     rect.right  = x + w;
 301     rect.bottom = y + h;
 302     ::InvalidateRect(GetHwndOf(GetParent()), &rect, TRUE);
 303 }
 304
 305 #endif // wxUSE_STATBMP
 306