xpmdecod.cpp
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CPP
795 行
/////////////////////////////////////////////////////////////////////////////
// Name: xpmdecod.cpp
// Purpose: wxXPMDecoder
// Author: John Cristy, Vaclav Slavik
// RCS-ID: $Id: xpmdecod.cpp,v 1.43.2.2 2006/01/18 16:32:46 JS Exp $
// Copyright: (c) John Cristy, 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. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
* Also contains some pieces from libxpm and its modification for win32 by
* HeDu <hedu@cul-ipn.uni-kiel.de>:
*
* Copyright (C) 1989-95 GROUPE BULL
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software 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 the Software.
*
* 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
* GROUPE BULL 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 THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of GROUPE BULL shall not be
* used in advertising or otherwise to promote the sale, use or other dealings
* in this Software without prior written authorization from GROUPE BULL.
*/
#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
#pragma implementation "xpmdecod.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/stream.h"
#include "wx/image.h"
#include "wx/utils.h"
#include "wx/log.h"
#include "wx/hashmap.h"
#include "wx/intl.h"
#include <string.h>
#include <ctype.h>
#include "wx/xpmdecod.h"
#if wxUSE_STREAMS
bool wxXPMDecoder::CanRead(wxInputStream& stream)
{
unsigned char buf[9];
if ( !stream.Read(buf, WXSIZEOF(buf)) )
return false;
stream.SeekI(-(wxFileOffset)WXSIZEOF(buf), wxFromCurrent);
return memcmp(buf, "/* XPM */", WXSIZEOF(buf)) == 0;
}
wxImage wxXPMDecoder::ReadFile(wxInputStream& stream)
{
size_t length = stream.GetSize();
wxCHECK_MSG( length != 0, wxNullImage,
wxT("Cannot read XPM from stream of unknown size") );
// use a smart buffer to be sure to free memory even when we return on
// error
wxCharBuffer buffer(length);
char *xpm_buffer = (char *)buffer.data();
if ( stream.Read(xpm_buffer, length).GetLastError() == wxSTREAM_READ_ERROR )
return wxNullImage;
xpm_buffer[length] = '\0';
/*
* Remove comments from the file:
*/
char *p, *q;
for (p = xpm_buffer; *p != '\0'; p++)
{
if ( (*p == '"') || (*p == '\'') )
{
if (*p == '"')
{
for (p++; *p != '\0'; p++)
if ( (*p == '"') && (*(p - 1) != '\\') )
break;
}
else // *p == '\''
{
for (p++; *p != '\0'; p++)
if ( (*p == '\'') && (*(p - 1) != '\\') )
break;
}
if (*p == '\0')
break;
continue;
}
if ( (*p != '/') || (*(p + 1) != '*') )
continue;
for (q = p + 2; *q != '\0'; q++)
{
if ( (*q == '*') && (*(q + 1) == '/') )
break;
}
// memmove allows overlaps (unlike strcpy):
size_t cpylen = strlen(q + 2) + 1;
memmove(p, q + 2, cpylen);
}
/*
* Remove unquoted characters:
*/
size_t i = 0;
for (p = xpm_buffer; *p != '\0'; p++)
{
if ( *p != '"' )
continue;
for (q = p + 1; *q != '\0'; q++)
if (*q == '"')
break;
strncpy(xpm_buffer + i, p + 1, q - p - 1);
i += q - p - 1;
xpm_buffer[i++] = '\n';
p = q + 1;
}
xpm_buffer[i] = '\0';
/*
* Create array of lines and convert \n's to \0's:
*/
const char **xpm_lines;
size_t lines_cnt = 0;
size_t line;
for (p = xpm_buffer; *p != '\0'; p++)
{
if ( *p == '\n' )
lines_cnt++;
}
if ( !lines_cnt )
{
// this doesn't really look an XPM image
return wxNullImage;
}
xpm_lines = new const char*[lines_cnt];
xpm_lines[0] = xpm_buffer;
line = 1;
for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
{
if ( *p == '\n' )
{
xpm_lines[line] = p + 1;
*p = '\0';
line++;
}
}
/*
* Read the image:
*/
wxImage img = ReadData(xpm_lines);
delete[] xpm_lines;
return img;
}
#endif // wxUSE_STREAMS
/*****************************************************************************\
* rgbtab.h *
* *
* A hard coded rgb.txt. To keep it short I removed all colornames with *
* trailing numbers, Blue3 etc, except the GrayXX. Sorry Grey-lovers I prefer *
* Gray ;-). But Grey is recognized on lookups, only on save Gray will be *
* used, maybe you want to do some substitue there too. *
* *
* To save memory the RGBs are coded in one long value, as done by the RGB *
* macro. *
* *
* Developed by HeDu 3/94 (hedu@cul-ipn.uni-kiel.de) *
\*****************************************************************************/
typedef struct
{
const char *name;
wxUint32 rgb;
} rgbRecord;
#define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
static rgbRecord theRGBRecords[] =
{
{"aliceblue", myRGB(240, 248, 255)},
{"antiquewhite", myRGB(250, 235, 215)},
{"aquamarine", myRGB(50, 191, 193)},
{"azure", myRGB(240, 255, 255)},
{"beige", myRGB(245, 245, 220)},
{"bisque", myRGB(255, 228, 196)},
{"black", myRGB(0, 0, 0)},
{"blanchedalmond", myRGB(255, 235, 205)},
{"blue", myRGB(0, 0, 255)},
{"blueviolet", myRGB(138, 43, 226)},
{"brown", myRGB(165, 42, 42)},
{"burlywood", myRGB(222, 184, 135)},
{"cadetblue", myRGB(95, 146, 158)},
{"chartreuse", myRGB(127, 255, 0)},
{"chocolate", myRGB(210, 105, 30)},
{"coral", myRGB(255, 114, 86)},
{"cornflowerblue", myRGB(34, 34, 152)},
{"cornsilk", myRGB(255, 248, 220)},
{"cyan", myRGB(0, 255, 255)},
{"darkgoldenrod", myRGB(184, 134, 11)},
{"darkgreen", myRGB(0, 86, 45)},
{"darkkhaki", myRGB(189, 183, 107)},
{"darkolivegreen", myRGB(85, 86, 47)},
{"darkorange", myRGB(255, 140, 0)},
{"darkorchid", myRGB(139, 32, 139)},
{"darksalmon", myRGB(233, 150, 122)},
{"darkseagreen", myRGB(143, 188, 143)},
{"darkslateblue", myRGB(56, 75, 102)},
{"darkslategray", myRGB(47, 79, 79)},
{"darkturquoise", myRGB(0, 166, 166)},
{"darkviolet", myRGB(148, 0, 211)},
{"deeppink", myRGB(255, 20, 147)},
{"deepskyblue", myRGB(0, 191, 255)},
{"dimgray", myRGB(84, 84, 84)},
{"dodgerblue", myRGB(30, 144, 255)},
{"firebrick", myRGB(142, 35, 35)},
{"floralwhite", myRGB(255, 250, 240)},
{"forestgreen", myRGB(80, 159, 105)},
{"gainsboro", myRGB(220, 220, 220)},
{"ghostwhite", myRGB(248, 248, 255)},
{"gold", myRGB(218, 170, 0)},
{"goldenrod", myRGB(239, 223, 132)},
{"gray", myRGB(126, 126, 126)},
{"gray0", myRGB(0, 0, 0)},
{"gray1", myRGB(3, 3, 3)},
{"gray10", myRGB(26, 26, 26)},
{"gray100", myRGB(255, 255, 255)},
{"gray11", myRGB(28, 28, 28)},
{"gray12", myRGB(31, 31, 31)},
{"gray13", myRGB(33, 33, 33)},
{"gray14", myRGB(36, 36, 36)},
{"gray15", myRGB(38, 38, 38)},
{"gray16", myRGB(41, 41, 41)},
{"gray17", myRGB(43, 43, 43)},
{"gray18", myRGB(46, 46, 46)},
{"gray19", myRGB(48, 48, 48)},
{"gray2", myRGB(5, 5, 5)},
{"gray20", myRGB(51, 51, 51)},
{"gray21", myRGB(54, 54, 54)},
{"gray22", myRGB(56, 56, 56)},
{"gray23", myRGB(59, 59, 59)},
{"gray24", myRGB(61, 61, 61)},
{"gray25", myRGB(64, 64, 64)},
{"gray26", myRGB(66, 66, 66)},
{"gray27", myRGB(69, 69, 69)},
{"gray28", myRGB(71, 71, 71)},
{"gray29", myRGB(74, 74, 74)},
{"gray3", myRGB(8, 8, 8)},
{"gray30", myRGB(77, 77, 77)},
{"gray31", myRGB(79, 79, 79)},
{"gray32", myRGB(82, 82, 82)},
{"gray33", myRGB(84, 84, 84)},
{"gray34", myRGB(87, 87, 87)},
{"gray35", myRGB(89, 89, 89)},
{"gray36", myRGB(92, 92, 92)},
{"gray37", myRGB(94, 94, 94)},
{"gray38", myRGB(97, 97, 97)},
{"gray39", myRGB(99, 99, 99)},
{"gray4", myRGB(10, 10, 10)},
{"gray40", myRGB(102, 102, 102)},
{"gray41", myRGB(105, 105, 105)},
{"gray42", myRGB(107, 107, 107)},
{"gray43", myRGB(110, 110, 110)},
{"gray44", myRGB(112, 112, 112)},
{"gray45", myRGB(115, 115, 115)},
{"gray46", myRGB(117, 117, 117)},
{"gray47", myRGB(120, 120, 120)},
{"gray48", myRGB(122, 122, 122)},
{"gray49", myRGB(125, 125, 125)},
{"gray5", myRGB(13, 13, 13)},
{"gray50", myRGB(127, 127, 127)},
{"gray51", myRGB(130, 130, 130)},
{"gray52", myRGB(133, 133, 133)},
{"gray53", myRGB(135, 135, 135)},
{"gray54", myRGB(138, 138, 138)},
{"gray55", myRGB(140, 140, 140)},
{"gray56", myRGB(143, 143, 143)},
{"gray57", myRGB(145, 145, 145)},
{"gray58", myRGB(148, 148, 148)},
{"gray59", myRGB(150, 150, 150)},
{"gray6", myRGB(15, 15, 15)},
{"gray60", myRGB(153, 153, 153)},
{"gray61", myRGB(156, 156, 156)},
{"gray62", myRGB(158, 158, 158)},
{"gray63", myRGB(161, 161, 161)},
{"gray64", myRGB(163, 163, 163)},
{"gray65", myRGB(166, 166, 166)},
{"gray66", myRGB(168, 168, 168)},
{"gray67", myRGB(171, 171, 171)},
{"gray68", myRGB(173, 173, 173)},
{"gray69", myRGB(176, 176, 176)},
{"gray7", myRGB(18, 18, 18)},
{"gray70", myRGB(179, 179, 179)},
{"gray71", myRGB(181, 181, 181)},
{"gray72", myRGB(184, 184, 184)},
{"gray73", myRGB(186, 186, 186)},
{"gray74", myRGB(189, 189, 189)},
{"gray75", myRGB(191, 191, 191)},
{"gray76", myRGB(194, 194, 194)},
{"gray77", myRGB(196, 196, 196)},
{"gray78", myRGB(199, 199, 199)},
{"gray79", myRGB(201, 201, 201)},
{"gray8", myRGB(20, 20, 20)},
{"gray80", myRGB(204, 204, 204)},
{"gray81", myRGB(207, 207, 207)},
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