--- /dev/null
+/////////////////////////////////////////////////////////////////////////////
+// Name: imagxpm.cpp
+// Purpose: wxXPMHandler
+// Author: Vaclav Slavik
+// RCS-ID: $Id$
+// Copyright: (c) 2001 Vaclav Slavik
+// Licence: wxWindows licence
+/////////////////////////////////////////////////////////////////////////////
+
+/*
+
+This file is partially based on source code of ImageMagick by John Cristy. Its
+license is as follows:
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% %
+% %
+% %
+% X X PPPP M M %
+% X X P P MM MM %
+% X PPPP M M M %
+% X X P M M %
+% X X P M M %
+% %
+% %
+% Read/Write ImageMagick Image Format. %
+% %
+% %
+% Software Design %
+% John Cristy %
+% July 1992 %
+% %
+% %
+% Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated %
+% to making software imaging solutions freely available. %
+% %
+% Permission is hereby granted, free of charge, to any person obtaining a %
+% copy of this software and associated documentation files ("ImageMagick"), %
+% to deal in ImageMagick without restriction, including without limitation %
+% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
+% and/or sell copies of ImageMagick, and to permit persons to whom the %
+% ImageMagick is furnished to do so, subject to the following conditions: %
+% %
+% The above copyright notice and this permission notice shall be included in %
+% all copies or substantial portions of ImageMagick. %
+% %
+% The software is provided "as is", without warranty of any kind, express or %
+% implied, including but not limited to the warranties of merchantability, %
+% fitness for a particular purpose and noninfringement. In no event shall %
+% ImageMagick Studio be liable for any claim, damages or other liability, %
+% whether in an action of contract, tort or otherwise, arising from, out of %
+% or in connection with ImageMagick or the use or other dealings in %
+% ImageMagick. %
+% %
+% Except as contained in this notice, the name of the ImageMagick Studio %
+% shall not be used in advertising or otherwise to promote the sale, use or %
+% other dealings in ImageMagick without prior written authorization from the %
+% ImageMagick Studio. %
+% %
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+*/
+
+#ifdef __GNUG__
+#pragma implementation "imagxpm.h"
+#endif
+
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifdef __BORLANDC__
+# pragma hdrstop
+#endif
+
+#ifndef WX_PRECOMP
+# include "wx/defs.h"
+#endif
+
+#if wxUSE_IMAGE && wxUSE_XPM
+
+#include "wx/imagxpm.h"
+#include "wx/wfstream.h"
+#include "wx/log.h"
+#include "wx/intl.h"
+#include "wx/utils.h"
+
+
+IMPLEMENT_DYNAMIC_CLASS(wxXPMHandler,wxImageHandler)
+
+//-----------------------------------------------------------------------------
+// wxXPMHandler
+//-----------------------------------------------------------------------------
+
+#if wxUSE_STREAMS
+
+bool wxXPMHandler::LoadFile(wxImage *WXUNUSED(image),
+ wxInputStream& WXUNUSED(stream),
+ bool verbose, int WXUNUSED(index))
+{
+ if (verbose)
+ wxLogDebug(_("XPM: the handler is write-only!"));
+ return FALSE;
+}
+
+bool wxXPMHandler::SaveFile(wxImage * image,
+ wxOutputStream& stream, bool verbose)
+{
+ wxString tmp;
+ char tmp_c;
+
+ // 1. count colours:
+ #define MaxCixels 92
+ static const char Cixel[MaxCixels+1] =
+ " .XoO+@#$%&*=-;:>,<1234567890qwertyuipasdfghjk"
+ "lzxcvbnmMNBVCZASDFGHJKLPIUYTREWQ!~^/()_`'][{}|";
+ int chars_per_pixel;
+ int cols;
+ int i, j, k;
+
+ cols = image->CountColours();
+ chars_per_pixel = 1;
+ for ( k = MaxCixels; cols > k; k *= MaxCixels)
+ chars_per_pixel++;
+
+ // 2. write the header:
+ tmp.Printf("/* XPM */\n"
+ "static char *xpm_data[] = {\n"
+ "/* columns rows colors chars-per-pixel */\n"
+ "\"%i %i %i %i\",\n",
+ image->GetWidth(), image->GetHeight(), cols, chars_per_pixel);
+ stream.Write(tmp.mb_str(), tmp.Length());
+
+ // 3. create color symbols table:
+ wxHashTable table(wxKEY_INTEGER);
+ image->ComputeHistogram(table);
+
+ char *symbols_data = new char[cols * (chars_per_pixel+1)];
+ char **symbols = new char*[cols];
+
+ // 2a. find mask colour:
+ long mask_key = -1;
+ if (image->HasMask())
+ mask_key = (image->GetMaskRed() << 16) |
+ (image->GetMaskGreen() << 8) | image->GetMaskBlue();
+
+ // 2b. generate colour table:
+ table.BeginFind();
+ wxNode *node = NULL;
+ while ((node = table.Next()) != NULL)
+ {
+ wxHNode *hnode = (wxHNode*) node->GetData();
+ long index = hnode->index;
+ symbols[index] = symbols_data + index * (chars_per_pixel+1);
+ char *sym = symbols[index];
+
+ k = index % MaxCixels;
+ sym[0] = Cixel[k];
+ for (j = 1; j < chars_per_pixel; j++)
+ {
+ k = ((index - k) / MaxCixels) % MaxCixels;
+ sym[j] = Cixel[k];
+ }
+ sym[j] = '\0';
+
+ long key = node->GetKeyInteger();
+
+ if (key == 0)
+ tmp.Printf(wxT("\"%s c Black\",\n"), sym);
+ else if (key == mask_key)
+ tmp.Printf(wxT("\"%s c None\",\n"), sym);
+ else
+ tmp.Printf(wxT("\"%s c #%s%s%s\",\n"), sym,
+ wxDecToHex((unsigned char)(key >> 16)).c_str(),
+ wxDecToHex((unsigned char)(key >> 8)).c_str(),
+ wxDecToHex((unsigned char)(key)).c_str());
+ stream.Write(tmp.mb_str(), tmp.Length());
+ }
+
+ tmp = wxT("/* pixels */\n");
+ stream.Write(tmp.mb_str(), tmp.Length());
+
+ unsigned char *data = image->GetData();
+ for (j = 0; j < image->GetHeight(); j++)
+ {
+ tmp_c = '\"'; stream.Write(&tmp_c, 1);
+ for (i = 0; i < image->GetWidth(); i++, data += 3)
+ {
+ unsigned long key = (data[0] << 16) | (data[1] << 8) | (data[2]);
+ wxHNode *hnode = (wxHNode*) table.Get(key);
+ stream.Write(symbols[hnode->index], chars_per_pixel);
+ }
+ tmp_c = '\"'; stream.Write(&tmp_c, 1);
+ if ( j + 1 < image->GetHeight() )
+ {
+ tmp_c = ','; stream.Write(&tmp_c, 1);
+ }
+ tmp_c = '\n'; stream.Write(&tmp_c, 1);
+ }
+ tmp = wxT("};\n");
+ stream.Write(tmp.mb_str(), 3);
+
+ delete[] symbols;
+ delete[] symbols_data;
+
+ return TRUE;
+}
+
+bool wxXPMHandler::DoCanRead(wxInputStream& stream)
+{
+ unsigned char buf[9];
+
+ stream.Read(buf, 9);
+ stream.SeekI(-9, wxFromCurrent);
+
+ return (memcmp(buf, "/* XPM */", 9) == 0);
+}
+
+#endif // wxUSE_STREAMS
+
+#endif // wxUSE_XPM && wxUSE_IMAGE
projects / wxWidgets.git / commitdiff
