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 // Copyright:   (c) Julian Smart
   8 // Licence:     wxWindows licence
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // For compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/list.h"
  28     #include "wx/utils.h"
  29     #include "wx/app.h"
  30     #include "wx/icon.h"
  31     #include "wx/bitmap.h"
  32     #include "wx/log.h"
  33 #endif
  34
  35 #include "wx/msw/private.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // wxWin macros
  39 // ----------------------------------------------------------------------------
  40
  41 IMPLEMENT_DYNAMIC_CLASS(wxIcon, wxGDIObject)
  42
  43 // ============================================================================
  44 // implementation
  45 // ============================================================================
  46
  47 // ----------------------------------------------------------------------------
  48 // wxIconRefData
  49 // ----------------------------------------------------------------------------
  50
  51 void wxIconRefData::Free()
  52 {
  53     if ( m_hIcon )
  54     {
  55 #ifndef __WXMICROWIN__
  56         ::DestroyIcon((HICON) m_hIcon);
  57 #endif
  58
  59         m_hIcon = 0;
  60     }
  61 }
  62
  63 // ----------------------------------------------------------------------------
  64 // wxIcon
  65 // ----------------------------------------------------------------------------
  66
  67 wxIcon::wxIcon(const char bits[], int width, int height)
  68 {
  69     wxBitmap bmp(bits, width, height);
  70     CopyFromBitmap(bmp);
  71 }
  72
  73 wxIcon::wxIcon(const wxString& iconfile,
  74                wxBitmapType type,
  75                int desiredWidth,
  76                int desiredHeight)
  77
  78 {
  79     LoadFile(iconfile, type, desiredWidth, desiredHeight);
  80 }
  81
  82 wxIcon::wxIcon(const wxIconLocation& loc)
  83 {
  84     // wxICOFileHandler accepts names in the format "filename;index"
  85     wxString fullname = loc.GetFileName();
  86     if ( loc.GetIndex() )
  87     {
  88         fullname << wxT(';') << loc.GetIndex();
  89     }
  90     //else: 0 is default
  91
  92     LoadFile(fullname, wxBITMAP_TYPE_ICO);
  93 }
  94
  95 wxIcon::~wxIcon()
  96 {
  97 }
  98
  99 wxObjectRefData *wxIcon::CloneRefData(const wxObjectRefData *dataOrig) const
 100 {
 101     const wxIconRefData *
 102         data = static_cast<const wxIconRefData *>(dataOrig);
 103     if ( !data )
 104         return NULL;
 105
 106     // we don't have to copy m_hIcon because we're only called from SetHICON()
 107     // which overwrites m_hIcon anyhow currently
 108     //
 109     // and if we're called from SetWidth/Height/Depth(), it doesn't make sense
 110     // to copy it neither as the handle would be inconsistent with the new size
 111     return new wxIconRefData(*data);
 112 }
 113
 114 void wxIcon::CopyFromBitmap(const wxBitmap& bmp)
 115 {
 116 #ifndef __WXMICROWIN__
 117     HICON hicon = wxBitmapToHICON(bmp);
 118     if ( !hicon )
 119     {
 120         wxLogLastError(wxT("CreateIconIndirect"));
 121     }
 122     else
 123     {
 124         SetHICON((WXHICON)hicon);
 125         SetSize(bmp.GetWidth(), bmp.GetHeight());
 126     }
 127 #endif // __WXMICROWIN__
 128 }
 129
 130 void wxIcon::CreateIconFromXpm(const char* const* data)
 131 {
 132     wxBitmap bmp(data);
 133     CopyFromBitmap(bmp);
 134 }
 135
 136 bool wxIcon::LoadFile(const wxString& filename,
 137                       wxBitmapType type,
 138                       int desiredWidth, int desiredHeight)
 139 {
 140     UnRef();
 141
 142     wxGDIImageHandler *handler = FindHandler(type);
 143
 144     if ( !handler )
 145     {
 146         // load via wxBitmap which, in turn, uses wxImage allowing us to
 147         // support more formats
 148         wxBitmap bmp;
 149         if ( !bmp.LoadFile(filename, type) )
 150             return false;
 151
 152         CopyFromBitmap(bmp);
 153         return true;
 154     }
 155
 156     return handler->Load(this, filename, type, desiredWidth, desiredHeight);
 157 }
 158
 159 bool wxIcon::CreateFromHICON(WXHICON icon)
 160 {
 161     SetHICON(icon);
 162     if ( !IsOk() )
 163         return false;
 164
 165     SetSize(wxGetHiconSize(icon));
 166
 167     return true;
 168 }