/////////////////////////////////////////////////////////////////////////////
-// Name: xpmdecod.cpp
+// Name: src/common/xpmdecod.cpp
// Purpose: wxXPMDecoder
// Author: John Cristy, Vaclav Slavik
// RCS-ID: $Id$
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-# pragma hdrstop
+ #pragma hdrstop
#endif
+#if wxUSE_IMAGE && wxUSE_XPM
+
+#include "wx/xpmdecod.h"
+
#ifndef WX_PRECOMP
-# include "wx/defs.h"
+ #include "wx/intl.h"
+ #include "wx/log.h"
+ #include "wx/utils.h"
+ #include "wx/hashmap.h"
+ #include "wx/stream.h"
+ #include "wx/image.h"
+ #include "wx/palette.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)
{
if ( !stream.Read(buf, WXSIZEOF(buf)) )
return false;
- stream.SeekI(-(wxFileOffset)WXSIZEOF(buf), wxFromCurrent);
+ if (stream.SeekI(-(wxFileOffset)WXSIZEOF(buf), wxFromCurrent) == wxInvalidOffset)
+ return false;
return memcmp(buf, "/* XPM */", WXSIZEOF(buf)) == 0;
}
return wxNullImage;
}
- xpm_lines = new const char*[lines_cnt];
+ xpm_lines = new const char*[lines_cnt + 1];
xpm_lines[0] = xpm_buffer;
line = 1;
for (p = xpm_buffer; (*p != '\0') && (line < lines_cnt); p++)
}
}
+ xpm_lines[lines_cnt] = NULL;
+
/*
* Read the image:
*/
#define myRGB(r,g,b) ((wxUint32)r<<16|(wxUint32)g<<8|(wxUint32)b)
-static rgbRecord theRGBRecords[] =
+static const rgbRecord theRGBRecords[] =
{
{"aliceblue", myRGB(240, 248, 255)},
{"antiquewhite", myRGB(250, 235, 215)},
{"yellowgreen", myRGB(50, 216, 56)},
{NULL, myRGB(0, 0, 0)}
};
-static int numTheRGBRecords = 235;
+static const int numTheRGBRecords = 235;
static unsigned char ParseHexadecimal(char digit1, char digit2)
{
struct wxXPMColourMapData
{
+ wxXPMColourMapData() { R = G = B = 0; }
unsigned char R,G,B;
};
-WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap)
+WX_DECLARE_STRING_HASH_MAP(wxXPMColourMapData, wxXPMColourMap);
-wxImage wxXPMDecoder::ReadData(const char **xpm_data)
+wxImage wxXPMDecoder::ReadData(const char* const* xpm_data)
{
+ wxCHECK_MSG(xpm_data, wxNullImage, wxT("NULL XPM data") );
+
wxImage img;
int count;
unsigned width, height, colors_cnt, chars_per_pixel;
size_t i, j, i_key;
- wxChar key[64];
+ char key[64];
const char *clr_def;
- bool hasMask;
wxXPMColourMap clr_tbl;
wxXPMColourMap::iterator it;
wxString maskKey;
+ wxString keyString;
/*
* Read hints and initialize structures:
&width, &height, &colors_cnt, &chars_per_pixel);
if ( count != 4 || width * height * colors_cnt == 0 )
{
- wxLogError(_T("XPM: Not XPM data!"));
+ wxLogError(_("XPM: incorrect header format!"));
return wxNullImage;
}
// 8bit RGB...
wxCHECK_MSG(chars_per_pixel < 64, wxNullImage, wxT("XPM colormaps this large not supported."));
- img.Create(width, height);
- if ( !img.Ok() ) return img;
+ if (!img.Create(width, height, false))
+ return wxNullImage;
- img.SetMask(false);
- key[chars_per_pixel] = wxT('\0');
- hasMask = false;
+ key[chars_per_pixel] = '\0';
/*
* Create colour map:
*/
+ wxXPMColourMapData clr_data;
for (i = 0; i < colors_cnt; i++)
{
- wxXPMColourMapData clr_data = {255,0,255};
+ const char *xmpColLine = xpm_data[1 + i];
+
+ // we must have at least " x y" after the colour index, hence +5
+ if ( !xmpColLine || strlen(xmpColLine) < chars_per_pixel + 5 )
+ {
+ wxLogError(_("XPM: incorrect colour description in line %d"),
+ (int)(1 + i));
+ return wxNullImage;
+ }
for (i_key = 0; i_key < chars_per_pixel; i_key++)
- key[i_key] = (wxChar)xpm_data[1 + i][i_key];
- clr_def = ParseColor(xpm_data[1 + i] + chars_per_pixel);
+ key[i_key] = xmpColLine[i_key];
+ clr_def = ParseColor(xmpColLine + chars_per_pixel);
if ( clr_def == NULL )
{
- wxLogError(_("XPM: malformed colour definition '%s'!"),
- xpm_data[1+i]);
+ wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
+ xmpColLine, (int)(1 + i));
+ return wxNullImage;
}
- else
+
+ bool isNone = false;
+ if ( !GetRGBFromName(clr_def, &isNone,
+ &clr_data.R, &clr_data.G, &clr_data.B) )
{
- bool isNone = false;
- if ( !GetRGBFromName(clr_def, &isNone,
- &clr_data.R, &clr_data.G, &clr_data.B) )
- {
- wxLogError(_("XPM: malformed colour definition '%s'!"),
- xpm_data[1+i]);
- }
- else
- {
- if ( isNone )
- {
- img.SetMask(true);
- img.SetMaskColour(255, 0, 255);
- hasMask = true;
- maskKey = key;
- }
- }
+ wxLogError(_("XPM: malformed colour definition '%s' at line %d!"),
+ xmpColLine, (int)(1 + i));
+ return wxNullImage;
}
- clr_tbl[key] = clr_data;
+
+ keyString = key;
+ if ( isNone )
+ maskKey = keyString;
+
+ clr_tbl[keyString] = clr_data;
}
- /*
- * Modify colour entries with RGB = (255,0,255) to (255,0,254) if
- * mask colour is present (so that existing pixels with (255,0,255)
- * magenta colour are not incorrectly made transparent):
- */
- if (hasMask)
+ // deal with the mask: we must replace pseudo-colour "None" with the mask
+ // colour (which can be any colour not otherwise used in the image)
+ if (!maskKey.empty())
{
- for (it = clr_tbl.begin(); it != clr_tbl.end(); ++it)
+ wxLongToLongHashMap rgb_table;
+ long rgb;
+ const size_t n = clr_tbl.size();
+ wxXPMColourMap::const_iterator iter = clr_tbl.begin();
+ for (i = 0; i < n; ++i, ++iter)
{
- if (it->second.R == 255 && it->second.G == 0 &&
- it->second.B == 255 &&
- it->first != maskKey)
- {
- it->second.B = 254;
- }
+ const wxXPMColourMapData& data = iter->second;
+ rgb = (data.R << 16) + (data.G << 8) + data.B;
+ rgb_table[rgb];
}
+ for (rgb = 0; rgb <= 0xffffff && rgb_table.count(rgb); ++rgb)
+ ;
+ if (rgb > 0xffffff)
+ {
+ wxLogError(_("XPM: no colors left to use for mask!"));
+ return wxNullImage;
+ }
+
+ wxXPMColourMapData& maskData = clr_tbl[maskKey];
+ maskData.R = wxByte(rgb >> 16);
+ maskData.G = wxByte(rgb >> 8);
+ maskData.B = wxByte(rgb);
+
+ img.SetMaskColour(maskData.R, maskData.G, maskData.B);
}
/*
{
for (i = 0; i < width; i++, img_data += 3)
{
+ const char *xpmImgLine = xpm_data[1 + colors_cnt + j];
+ if ( !xpmImgLine || strlen(xpmImgLine) < width*chars_per_pixel )
+ {
+ wxLogError(_("XPM: truncated image data at line %d!"),
+ (int)(1 + colors_cnt + j));
+ return wxNullImage;
+ }
+
for (i_key = 0; i_key < chars_per_pixel; i_key++)
- key[i_key] = (wxChar)xpm_data[1 + colors_cnt + j]
- [chars_per_pixel * i + i_key];
- entry = clr_tbl.find(key);
+ {
+ key[i_key] = xpmImgLine[chars_per_pixel * i + i_key];
+ }
+
+ keyString = key;
+ entry = clr_tbl.find(keyString);
if ( entry == end )
{
wxLogError(_("XPM: Malformed pixel data!"));
// each remaining pixel if we don't bail out
return wxNullImage;
}
- else
- {
- img_data[0] = entry->second.R;
- img_data[1] = entry->second.G;
- img_data[2] = entry->second.B;
- }
+
+ img_data[0] = entry->second.R;
+ img_data[1] = entry->second.G;
+ img_data[2] = entry->second.B;
}
}
+#if wxUSE_PALETTE
+ unsigned char* r = new unsigned char[colors_cnt];
+ unsigned char* g = new unsigned char[colors_cnt];
+ unsigned char* b = new unsigned char[colors_cnt];
+ for (it = clr_tbl.begin(), i = 0; it != clr_tbl.end(); it++, i++)
+ {
+ r[i] = it->second.R;
+ g[i] = it->second.G;
+ b[i] = it->second.B;
+ }
+ wxASSERT(i == colors_cnt);
+ img.SetPalette(wxPalette(colors_cnt, r, g, b));
+ delete[] r;
+ delete[] g;
+ delete[] b;
+#endif // wxUSE_PALETTE
return img;
}
projects / wxWidgets.git / blobdiff