X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/60d8e88654bc14d7c7016f1f8281a26656dc3b10..f54e5c1a4f6952c62ed4480f7d26feddc20f98ba:/src/common/xpmdecod.cpp diff --git a/src/common/xpmdecod.cpp b/src/common/xpmdecod.cpp index e30022e8c7..54e54c5221 100644 --- a/src/common/xpmdecod.cpp +++ b/src/common/xpmdecod.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: xpmdecod.cpp +// Name: src/common/xpmdecod.cpp // Purpose: wxXPMDecoder // Author: John Cristy, Vaclav Slavik // RCS-ID: $Id$ @@ -90,35 +90,30 @@ license is as follows: * 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 + #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 - #include -#include "wx/xpmdecod.h" - #if wxUSE_STREAMS bool wxXPMDecoder::CanRead(wxInputStream& stream) { @@ -127,7 +122,8 @@ 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; } @@ -221,7 +217,7 @@ wxImage wxXPMDecoder::ReadFile(wxInputStream& stream) 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++) @@ -234,6 +230,8 @@ wxImage wxXPMDecoder::ReadFile(wxInputStream& stream) } } + xpm_lines[lines_cnt] = NULL; + /* * Read the image: */ @@ -269,7 +267,7 @@ typedef struct #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)}, @@ -508,7 +506,7 @@ static rgbRecord theRGBRecords[] = {"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) { @@ -655,22 +653,25 @@ static const char *ParseColor(const char *data) struct wxXPMColourMapData { + wxXPMColourMapData() { R = G = B = 0; } unsigned char R,G,B; }; 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: @@ -680,7 +681,7 @@ wxImage wxXPMDecoder::ReadData(const char **xpm_data) &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; } @@ -689,68 +690,82 @@ wxImage wxXPMDecoder::ReadData(const char **xpm_data) // 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); } /* @@ -765,10 +780,21 @@ wxImage wxXPMDecoder::ReadData(const char **xpm_data) { 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!")); @@ -779,15 +805,29 @@ wxImage wxXPMDecoder::ReadData(const char **xpm_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; }