src/msw/xpmhand.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        xpmhand.cpp
   3 // Purpose:     wxBitmap: XPM handler and constructors
   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 #ifdef __GNUG__
  13 #pragma implementation "xpmhand.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #ifdef __BORLANDC__
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24 #include <stdio.h>
  25 #include "wx/setup.h"
  26 #include "wx/list.h"
  27 #include "wx/utils.h"
  28 #include "wx/app.h"
  29 #include "wx/palette.h"
  30 #include "wx/dcmemory.h"
  31 #include "wx/bitmap.h"
  32 #include "wx/icon.h"
  33 #endif
  34
  35 #include "wx/msw/private.h"
  36 #include "wx/log.h"
  37
  38 #include "assert.h"
  39
  40 #if wxUSE_XPM_IN_MSW
  41 #define FOR_MSW 1
  42 #include "../xpm/xpm34.h"
  43 #endif
  44
  45 #include "wx/xpmhand.h"
  46 #include "wx/msw/dib.h"
  47
  48 IMPLEMENT_DYNAMIC_CLASS(wxXPMFileHandler, wxBitmapHandler)
  49
  50 bool wxXPMFileHandler::LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
  51     int desiredWidth, int desiredHeight)
  52 {
  53 #if wxUSE_XPM_IN_MSW
  54     XImage *ximage;
  55     XpmAttributes xpmAttr;
  56     HDC     dc;
  57
  58     M_BITMAPHANDLERDATA->m_ok = FALSE;
  59     dc = CreateCompatibleDC(NULL);
  60     if (dc)
  61     {
  62       xpmAttr.valuemask = XpmReturnPixels;
  63       int errorStatus = XpmReadFileToImage(&dc, wxMBSTRINGCAST name.fn_str(), &ximage, (XImage **) NULL, &xpmAttr);
  64       DeleteDC(dc);
  65       if (errorStatus == XpmSuccess)
  66       {
  67         M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
  68
  69         BITMAP  bm;
  70         GetObject((HBITMAP)M_BITMAPHANDLERDATA->m_hBitmap, sizeof(bm), (LPSTR) & bm);
  71
  72         M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
  73         M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
  74         M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
  75         M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
  76         XpmFreeAttributes(&xpmAttr);
  77         XImageFree(ximage);
  78
  79         M_BITMAPHANDLERDATA->m_ok = TRUE;
  80         return TRUE;
  81       }
  82       else
  83       {
  84         M_BITMAPHANDLERDATA->m_ok = FALSE;
  85         return FALSE;
  86       }
  87     }
  88 #endif
  89
  90     return FALSE;
  91 }
  92
  93 bool wxXPMFileHandler::SaveFile(wxBitmap *bitmap, const wxString& name, int type, const wxPalette *palette)
  94 {
  95 #if wxUSE_XPM_IN_MSW
  96     HDC     dc = NULL;
  97
  98     XImage  ximage;
  99
 100     dc = CreateCompatibleDC(NULL);
 101     if (dc)
 102     {
 103         if (SelectObject(dc, (HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap))
 104         {
 105             /* for following SetPixel */
 106             /* fill the XImage struct 'by hand' */
 107             ximage.width = M_BITMAPHANDLERDATA->m_width;
 108             ximage.height = M_BITMAPHANDLERDATA->m_height;
 109             ximage.depth = M_BITMAPHANDLERDATA->m_depth;
 110             ximage.bitmap = (HBITMAP)M_BITMAPHANDLERDATA->m_hBitmap;
 111             int errorStatus = XpmWriteFileFromImage(&dc, wxMBSTRINGCAST name.fn_str(),
 112                 &ximage, (XImage *) NULL, (XpmAttributes *) NULL);
 113
 114             if (dc)
 115                 DeleteDC(dc);
 116
 117             if (errorStatus == XpmSuccess)
 118                 return TRUE;    /* no error */
 119             else
 120                 return FALSE;
 121         } else return FALSE;
 122     } else return FALSE;
 123 #else
 124     return FALSE;
 125 #endif
 126 }
 127
 128 IMPLEMENT_DYNAMIC_CLASS(wxXPMDataHandler, wxBitmapHandler)
 129
 130 bool wxXPMDataHandler::Create(wxBitmap *bitmap, void *data, long flags, int width, int height, int depth)
 131 {
 132 #if wxUSE_XPM_IN_MSW
 133   XImage *ximage;
 134   int     ErrorStatus;
 135   XpmAttributes xpmAttr;
 136   HDC     dc;
 137
 138   M_BITMAPHANDLERDATA->m_ok = FALSE;
 139   M_BITMAPHANDLERDATA->m_numColors = 0;
 140
 141   dc = CreateCompatibleDC(NULL);  /* memory DC */
 142
 143   if (dc)
 144   {
 145     xpmAttr.valuemask = XpmReturnInfos; /* get infos back */
 146     ErrorStatus = XpmCreateImageFromData(&dc, (char **)data,
 147          &ximage, (XImage **) NULL, &xpmAttr);
 148
 149     if (ErrorStatus == XpmSuccess)
 150     {
 151       /* ximage is malloced and contains bitmap and attributes */
 152       M_BITMAPHANDLERDATA->m_hBitmap = (WXHBITMAP) ximage->bitmap;
 153
 154       BITMAP  bm;
 155       GetObject((HBITMAP) M_BITMAPHANDLERDATA->m_hBitmap, sizeof(bm), (LPSTR) & bm);
 156
 157       M_BITMAPHANDLERDATA->m_width = (bm.bmWidth);
 158       M_BITMAPHANDLERDATA->m_height = (bm.bmHeight);
 159       M_BITMAPHANDLERDATA->m_depth = (bm.bmPlanes * bm.bmBitsPixel);
 160       M_BITMAPHANDLERDATA->m_numColors = xpmAttr.npixels;
 161       XpmFreeAttributes(&xpmAttr);
 162
 163       XImageFree(ximage); // releases the malloc, but does not detroy
 164                           // the bitmap
 165       M_BITMAPHANDLERDATA->m_ok = TRUE;
 166       DeleteDC(dc);
 167
 168       return TRUE;
 169     }
 170     else
 171     {
 172       M_BITMAPHANDLERDATA->m_ok = FALSE;
 173 //    XpmDebugError(ErrorStatus, NULL);
 174       DeleteDC(dc);
 175       return FALSE;
 176     }
 177   }
 178 #endif
 179
 180   return FALSE;
 181 }
 182