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 , EMPTY_MACROVALUE, 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 static wxGDIImage* ConvertImage( const wxGDIImage& bitmap )
 115 {
 116     bool isIcon = bitmap.IsKindOf( CLASSINFO(wxIcon) );
 117
 118     if( !isIcon )
 119     {
 120         wxASSERT_MSG( wxDynamicCast(&bitmap, wxBitmap),
 121                       _T("not an icon and not a bitmap?") );
 122
 123         const wxBitmap& bmp = (const wxBitmap&)bitmap;
 124         wxMask *mask = bmp.GetMask();
 125         if ( mask && mask->GetMaskBitmap() )
 126         {
 127             wxIcon* icon = new wxIcon;
 128             icon->CopyFromBitmap(bmp);
 129
 130             return icon;
 131         }
 132
 133         return new wxBitmap( bmp );
 134     }
 135
 136     // copying a bitmap is a cheap operation
 137     return new wxIcon( (const wxIcon&)bitmap );
 138 }
 139
 140 bool wxStaticBitmap::Create(wxWindow *parent,
 141                             wxWindowID id,
 142                             const wxGDIImage& bitmap,
 143                             const wxPoint& pos,
 144                             const wxSize& size,
 145                             long style,
 146                             const wxString& name)
 147 {
 148     if ( !CreateControl(parent, id, pos, size, style, wxDefaultValidator, name) )
 149         return false;
 150
 151     // we may have either bitmap or icon: if a bitmap with mask is passed, we
 152     // will transform it to an icon ourselves because otherwise the mask will
 153     // be ignored by Windows
 154     m_isIcon = bitmap.IsKindOf(CLASSINFO(wxIcon));
 155
 156     wxGDIImage *image = ConvertImage( bitmap );
 157     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 158
 159     // create the native control
 160     if ( !MSWCreateControl(_T("STATIC"), wxEmptyString, pos, size) )
 161     {
 162         // control creation failed
 163         return false;
 164     }
 165
 166     // no need to delete the new image
 167     SetImageNoCopy(image);
 168
 169     // GetBestSize will work properly now, so set the best size if needed
 170     SetBestSize(size);
 171
 172     return true;
 173 }
 174
 175 wxBorder wxStaticBitmap::GetDefaultBorder() const
 176 {
 177     return wxBORDER_NONE;
 178 }
 179
 180 WXDWORD wxStaticBitmap::MSWGetStyle(long style, WXDWORD *exstyle) const
 181 {
 182     WXDWORD msStyle = wxControl::MSWGetStyle(style, exstyle);
 183
 184     // what kind of control are we?
 185     msStyle |= m_isIcon ? SS_ICON : SS_BITMAP;
 186
 187     // we use SS_CENTERIMAGE to prevent the control from resizing the bitmap to
 188     // fit to its size -- this is unexpected and doesn't happen in other ports
 189     msStyle |= SS_CENTERIMAGE;
 190
 191     return msStyle;
 192 }
 193
 194 bool wxStaticBitmap::ImageIsOk() const
 195 {
 196     return m_image && m_image->Ok();
 197 }
 198
 199 void wxStaticBitmap::Free()
 200 {
 201     delete m_image;
 202
 203     m_image = NULL;
 204 }
 205
 206 wxSize wxStaticBitmap::DoGetBestSize() const
 207 {
 208     if ( ImageIsOk() )
 209         return wxSize(m_image->GetWidth(), m_image->GetHeight());
 210
 211     // this is completely arbitrary
 212     return wxSize(16, 16);
 213 }
 214
 215 void wxStaticBitmap::SetImage( const wxGDIImage* image )
 216 {
 217     wxGDIImage* convertedImage = ConvertImage( *image );
 218     SetImageNoCopy( convertedImage );
 219     InvalidateBestSize();
 220 }
 221
 222 void wxStaticBitmap::SetImageNoCopy( wxGDIImage* image)
 223 {
 224     Free();
 225
 226     m_isIcon = image->IsKindOf( CLASSINFO(wxIcon) );
 227     // the image has already been copied
 228     m_image = image;
 229
 230     int x, y;
 231     int w, h;
 232     GetPosition(&x, &y);
 233     GetSize(&w, &h);
 234
 235 #ifdef __WIN32__
 236     HANDLE handle = (HANDLE)m_image->GetHandle();
 237     LONG style = ::GetWindowLong( (HWND)GetHWND(), GWL_STYLE ) ;
 238     ::SetWindowLong( (HWND)GetHWND(), GWL_STYLE, ( style & ~( SS_BITMAP|SS_ICON ) ) |
 239                      ( m_isIcon ? SS_ICON : SS_BITMAP ) );
 240     ::SendMessage(GetHwnd(), STM_SETIMAGE,
 241                   m_isIcon ? IMAGE_ICON : IMAGE_BITMAP, (LPARAM)handle);
 242 #endif // Win32
 243
 244     if ( ImageIsOk() )
 245     {
 246         int width = image->GetWidth(),
 247             height = image->GetHeight();
 248         if ( width && height )
 249         {
 250             w = width;
 251             h = height;
 252
 253             ::MoveWindow(GetHwnd(), x, y, width, height, FALSE);
 254         }
 255     }
 256
 257     RECT rect;
 258     rect.left   = x;
 259     rect.top    = y;
 260     rect.right  = x + w;
 261     rect.bottom = y + h;
 262     ::InvalidateRect(GetHwndOf(GetParent()), &rect, TRUE);
 263 }
 264
 265 // We need this or the control can never be moved e.g. in Dialog Editor.
 266 WXLRESULT wxStaticBitmap::MSWWindowProc(WXUINT nMsg,
 267                                    WXWPARAM wParam,
 268                                    WXLPARAM lParam)
 269 {
 270 #ifndef __WXWINCE__
 271     // Ensure that static items get messages. Some controls don't like this
 272     // message to be intercepted (e.g. RichEdit), hence the tests.
 273     if ( nMsg == WM_NCHITTEST )
 274         return (long)HTCLIENT;
 275 #endif
 276
 277     return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
 278 }
 279
 280 #endif // wxUSE_STATBMP