src/msw/icon.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/icon.cpp
   3 // Purpose:     wxIcon class
   4 // Author:      Julian Smart
   5 // Modified by: 20.11.99 (VZ): don't derive from wxBitmap any more
   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 #ifndef WX_PRECOMP
  28     #include "wx/list.h"
  29     #include "wx/utils.h"
  30     #include "wx/app.h"
  31     #include "wx/icon.h"
  32     #include "wx/bitmap.h"
  33     #include "wx/log.h"
  34 #endif
  35
  36 #include "wx/msw/private.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // wxWin macros
  40 // ----------------------------------------------------------------------------
  41
  42 IMPLEMENT_DYNAMIC_CLASS(wxIcon, wxGDIObject)
  43
  44 // ============================================================================
  45 // implementation
  46 // ============================================================================
  47
  48 // ----------------------------------------------------------------------------
  49 // wxIconRefData
  50 // ----------------------------------------------------------------------------
  51
  52 void wxIconRefData::Free()
  53 {
  54     if ( m_hIcon )
  55     {
  56 #ifndef __WXMICROWIN__
  57         ::DestroyIcon((HICON) m_hIcon);
  58 #endif
  59
  60         m_hIcon = 0;
  61     }
  62 }
  63
  64 // ----------------------------------------------------------------------------
  65 // wxIcon
  66 // ----------------------------------------------------------------------------
  67
  68 wxIcon::wxIcon(const char bits[], int width, int height)
  69 {
  70     wxBitmap bmp(bits, width, height);
  71     CopyFromBitmap(bmp);
  72 }
  73
  74 wxIcon::wxIcon(const wxString& iconfile,
  75                wxBitmapType type,
  76                int desiredWidth,
  77                int desiredHeight)
  78
  79 {
  80     LoadFile(iconfile, type, desiredWidth, desiredHeight);
  81 }
  82
  83 wxIcon::wxIcon(const wxIconLocation& loc)
  84 {
  85     // wxICOFileHandler accepts names in the format "filename;index"
  86     wxString fullname = loc.GetFileName();
  87     if ( loc.GetIndex() )
  88     {
  89         fullname << _T(';') << loc.GetIndex();
  90     }
  91     //else: 0 is default
  92
  93     LoadFile(fullname, wxBITMAP_TYPE_ICO);
  94 }
  95
  96 wxIcon::~wxIcon()
  97 {
  98 }
  99
 100 wxObjectRefData *wxIcon::CloneRefData(const wxObjectRefData *dataOrig) const
 101 {
 102     const wxIconRefData *
 103         data = static_cast<const wxIconRefData *>(dataOrig);
 104     if ( !data )
 105         return NULL;
 106
 107     // we don't have to copy m_hIcon because we're only called from SetHICON()
 108     // which overwrites m_hIcon anyhow currently
 109     //
 110     // and if we're called from SetWidth/Height/Depth(), it doesn't make sense
 111     // to copy it neither as the handle would be inconsistent with the new size
 112     return new wxIconRefData(*data);
 113 }
 114
 115 void wxIcon::CopyFromBitmap(const wxBitmap& bmp)
 116 {
 117 #ifndef __WXMICROWIN__
 118     HICON hicon = wxBitmapToHICON(bmp);
 119     if ( !hicon )
 120     {
 121         wxLogLastError(wxT("CreateIconIndirect"));
 122     }
 123     else
 124     {
 125         SetHICON((WXHICON)hicon);
 126         SetSize(bmp.GetWidth(), bmp.GetHeight());
 127     }
 128 #endif // __WXMICROWIN__
 129 }
 130
 131 void wxIcon::CreateIconFromXpm(const char* const* data)
 132 {
 133     wxBitmap bmp(data);
 134     CopyFromBitmap(bmp);
 135 }
 136
 137 bool wxIcon::LoadFile(const wxString& filename,
 138                       wxBitmapType type,
 139                       int desiredWidth, int desiredHeight)
 140 {
 141     UnRef();
 142
 143     wxGDIImageHandler *handler = FindHandler(type);
 144
 145     if ( !handler )
 146     {
 147         // load via wxBitmap which, in turn, uses wxImage allowing us to
 148         // support more formats
 149         wxBitmap bmp;
 150         if ( !bmp.LoadFile(filename, type) )
 151             return false;
 152
 153         CopyFromBitmap(bmp);
 154         return true;
 155     }
 156
 157     return handler->Load(this, filename, type, desiredWidth, desiredHeight);
 158 }