src/unix/utilsx11.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/unix/utilsx11.cpp
   3 // Purpose:     Miscellaneous X11 functions
   4 // Author:      Mattia Barbon
   5 // Modified by:
   6 // Created:     25.03.02
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) wxWindows team
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #if defined(__WXX11__) || defined(__WXGTK__) || defined(__WXMOTIF__)
  13
  14 #include "wx/unix/utilsx11.h"
  15 #include "wx/iconbndl.h"
  16 #include "wx/image.h"
  17 #include "wx/icon.h"
  18
  19 #include <X11/Xlib.h>
  20 #include <X11/Xatom.h>
  21
  22 void wxSetIconsX11( WXDisplay* display, WXWindow window,
  23                     const wxIconBundle& ib )
  24 {
  25     size_t size = 0;
  26     size_t i, max = ib.m_icons.GetCount();
  27
  28     for( i = 0; i < max; ++i )
  29         size += 2 + ib.m_icons[i].GetWidth() * ib.m_icons[i].GetHeight();
  30
  31     Atom net_wm_icon = XInternAtom( (Display*)display, "_NET_WM_ICON", 0 );
  32
  33     if( size > 0 )
  34     {
  35         wxUint32* data = new wxUint32[size];
  36         wxUint32* ptr = data;
  37
  38         for( i = 0; i < max; ++i )
  39         {
  40             const wxImage image = ib.m_icons[i].ConvertToImage();
  41             int width = image.GetWidth(), height = image.GetHeight();
  42             unsigned char* imageData = image.GetData();
  43             unsigned char* imageDataEnd = imageData + ( width * height * 3 );
  44             bool hasMask = image.HasMask();
  45             unsigned char rMask, gMask, bMask;
  46             unsigned char r, g, b, a;
  47
  48             if( hasMask )
  49             {
  50                 rMask = image.GetMaskRed();
  51                 gMask = image.GetMaskGreen();
  52                 bMask = image.GetMaskBlue();
  53             }
  54
  55             *ptr++ = width;
  56             *ptr++ = height;
  57
  58             while( imageData < imageDataEnd ) {
  59                 r = imageData[0];
  60                 g = imageData[1];
  61                 b = imageData[2];
  62                 if( hasMask && r == rMask && g == gMask && b == bMask )
  63                     a = 0;
  64                 else
  65                     a = 255;
  66
  67                 *ptr++ = ( a << 24 ) | ( r << 16 ) | ( g << 8 ) | b;
  68
  69                 imageData += 3;
  70             }
  71         }
  72
  73         XChangeProperty( (Display*)display,
  74                          (Window)window,
  75                          net_wm_icon,
  76                          XA_CARDINAL, 32,
  77                          PropModeReplace,
  78                          (unsigned char*)data, size );
  79         delete[] data;
  80     }
  81     else
  82     {
  83         XDeleteProperty( (Display*)display,
  84                          (Window)window,
  85                          net_wm_icon );
  86     }
  87 }
  88
  89 #endif