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///////////////////////////////////////////////////////////////////////////// |
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// Name: src/common/imagxpm.cpp |
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// Purpose: wxXPMHandler |
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// Author: Vaclav Slavik, Robert Roebling |
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// RCS-ID: $Id: imagxpm.cpp 53477 2008-05-07 07:28:57Z JS $ |
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// Copyright: (c) 2001 Vaclav Slavik |
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// Licence: wxWindows licence |
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///////////////////////////////////////////////////////////////////////////// |
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|
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/* |
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|
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This file is partially based on source code of ImageMagick by John Cristy. Its |
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license is as follows: |
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|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% % |
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% % |
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% % |
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% X X PPPP M M % |
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% X X P P MM MM % |
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% X PPPP M M M % |
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% X X P M M % |
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% X X P M M % |
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% % |
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% % |
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% Read/Write ImageMagick Image Format. % |
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% % |
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% % |
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% Software Design % |
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% John Cristy % |
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% July 1992 % |
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% % |
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% % |
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% Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated % |
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% to making software imaging solutions freely available. % |
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% % |
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% Permission is hereby granted, free of charge, to any person obtaining a % |
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% copy of this software and associated documentation files ("ImageMagick"), % |
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% to deal in ImageMagick without restriction, including without limitation % |
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% the rights to use, copy, modify, merge, publish, distribute, sublicense, % |
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% and/or sell copies of ImageMagick, and to permit persons to whom the % |
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% ImageMagick is furnished to do so, subject to the following conditions: % |
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% % |
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% The above copyright notice and this permission notice shall be included in % |
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% all copies or substantial portions of ImageMagick. % |
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% % |
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% The software is provided "as is", without warranty of any kind, express or % |
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% implied, including but not limited to the warranties of merchantability, % |
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% fitness for a particular purpose and noninfringement. In no event shall % |
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% ImageMagick Studio be liable for any claim, damages or other liability, % |
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% whether in an action of contract, tort or otherwise, arising from, out of % |
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% or in connection with ImageMagick or the use or other dealings in % |
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% ImageMagick. % |
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% % |
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% Except as contained in this notice, the name of the ImageMagick Studio % |
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% shall not be used in advertising or otherwise to promote the sale, use or % |
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% other dealings in ImageMagick without prior written authorization from the % |
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% ImageMagick Studio. % |
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% % |
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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% |
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% |
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*/ |
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|
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// For compilers that support precompilation, includes "wx.h". |
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#include "wx/wxprec.h" |
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|
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#ifdef __BORLANDC__ |
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#pragma hdrstop |
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#endif |
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|
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#if wxUSE_XPM |
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|
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#ifndef WX_PRECOMP |
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#include "wx/log.h" |
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#include "wx/intl.h" |
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#include "wx/utils.h" |
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#endif |
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|
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#include "wx/imagxpm.h" |
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#include "wx/wfstream.h" |
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#include "wx/xpmdecod.h" |
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|
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IMPLEMENT_DYNAMIC_CLASS(wxXPMHandler,wxImageHandler) |
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|
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//----------------------------------------------------------------------------- |
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// wxXPMHandler |
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//----------------------------------------------------------------------------- |
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|
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#if wxUSE_STREAMS |
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|
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bool wxXPMHandler::LoadFile(wxImage *image, |
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wxInputStream& stream, |
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bool WXUNUSED(verbose), int WXUNUSED(index)) |
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{ |
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wxXPMDecoder decoder; |
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|
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wxImage img = decoder.ReadFile(stream); |
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if ( !img.Ok() ) |
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return false; |
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*image = img; |
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return true; |
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} |
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|
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bool wxXPMHandler::SaveFile(wxImage * image, |
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wxOutputStream& stream, bool WXUNUSED(verbose)) |
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{ |
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// 1. count colours: |
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#define MaxCixels 92 |
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static const char Cixel[MaxCixels+1] = |
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" .XoO+@#$%&*=-;:>,<1234567890qwertyuipasdfghjk" |
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"lzxcvbnmMNBVCZASDFGHJKLPIUYTREWQ!~^/()_`'][{}|"; |
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int i, j, k; |
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|
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wxImageHistogram histogram; |
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int cols = int(image->ComputeHistogram(histogram)); |
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|
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int chars_per_pixel = 1; |
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for ( k = MaxCixels; cols > k; k *= MaxCixels) |
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chars_per_pixel++; |
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|
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// 2. write the header: |
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wxString sName; |
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if ( image->HasOption(wxIMAGE_OPTION_FILENAME) ) |
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{ |
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wxSplitPath(image->GetOption(wxIMAGE_OPTION_FILENAME), |
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NULL, &sName, NULL); |
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sName << wxT("_xpm"); |
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} |
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|
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if ( !sName.empty() ) |
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sName = wxString(wxT("/* XPM */\nstatic const char *")) + sName; |
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else |
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sName = wxT("/* XPM */\nstatic const char *xpm_data"); |
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stream.Write( (const char*) sName.ToAscii(), sName.Len() ); |
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|
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char tmpbuf[200]; |
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// VS: 200b is safe upper bound for anything produced by sprintf below |
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// (<101 bytes the string, neither %i can expand into more than 10 chars) |
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sprintf(tmpbuf, |
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"[] = {\n" |
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"/* columns rows colors chars-per-pixel */\n" |
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"\"%i %i %i %i\",\n", |
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image->GetWidth(), image->GetHeight(), cols, chars_per_pixel); |
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stream.Write(tmpbuf, strlen(tmpbuf)); |
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|
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// 3. create color symbols table: |
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char *symbols_data = new char[cols * (chars_per_pixel+1)]; |
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char **symbols = new char*[cols]; |
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|
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// 2a. find mask colour: |
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unsigned long mask_key = 0x1000000 /*invalid RGB value*/; |
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if (image->HasMask()) |
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mask_key = (image->GetMaskRed() << 16) | |
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(image->GetMaskGreen() << 8) | image->GetMaskBlue(); |
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|
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// 2b. generate colour table: |
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for (wxImageHistogram::iterator entry = histogram.begin(); |
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entry != histogram.end(); ++entry ) |
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{ |
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unsigned long index = entry->second.index; |
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symbols[index] = symbols_data + index * (chars_per_pixel+1); |
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char *sym = symbols[index]; |
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|
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for (j = 0; j < chars_per_pixel; j++) |
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{ |
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sym[j] = Cixel[index % MaxCixels]; |
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index /= MaxCixels; |
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} |
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sym[j] = '\0'; |
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|
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unsigned long key = entry->first; |
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|
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if (key == 0) |
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sprintf( tmpbuf, "\"%s c Black\",\n", sym); |
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else if (key == mask_key) |
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sprintf( tmpbuf, "\"%s c None\",\n", sym); |
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else |
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{ |
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wxByte r = wxByte(key >> 16); |
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wxByte g = wxByte(key >> 8); |
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wxByte b = wxByte(key); |
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sprintf(tmpbuf, "\"%s c #%02X%02X%02X\",\n", sym, r, g, b); |
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} |
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stream.Write( tmpbuf, strlen(tmpbuf) ); |
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} |
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|
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stream.Write("/* pixels */\n", 13); |
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|
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unsigned char *data = image->GetData(); |
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for (j = 0; j < image->GetHeight(); j++) |
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{ |
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char tmp_c; |
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tmp_c = '\"'; stream.Write(&tmp_c, 1); |
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for (i = 0; i < image->GetWidth(); i++, data += 3) |
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{ |
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unsigned long key = (data[0] << 16) | (data[1] << 8) | (data[2]); |
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stream.Write(symbols[histogram[key].index], chars_per_pixel); |
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} |
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tmp_c = '\"'; stream.Write(&tmp_c, 1); |
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if ( j + 1 < image->GetHeight() ) |
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{ |
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tmp_c = ','; stream.Write(&tmp_c, 1); |
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} |
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tmp_c = '\n'; stream.Write(&tmp_c, 1); |
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} |
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stream.Write("};\n", 3 ); |
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|
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// Clean up: |
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delete[] symbols; |
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delete[] symbols_data; |
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|
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return true; |
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} |
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|
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bool wxXPMHandler::DoCanRead(wxInputStream& stream) |
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{ |
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wxXPMDecoder decoder; |
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return decoder.CanRead(stream); |
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} |
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|
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#endif // wxUSE_STREAMS |
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|
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#endif // wxUSE_XPM |
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