Rainer and Edzard, thanx for the inspiration. I really prefer the XPM format. (expect the downside it is not compressed ;-( )
The best solution in my case was to combine both of your ideas. So i expanded Fl_XPM_image and added the functionality to pass a pointer for the XPM image data. One easy step away by replacing fgets() with 'memgets()'. Maybe its useful for 1.3 too. mk --- my_XPM_Image.h --- // // "$Id: my_XPM_Image.h,v 1.2 2012/02/08 22:14:56 mattes Exp $" // // XPM image header file for the Fast Light Tool Kit (FLTK). // // Copyright 1998-2005 by Bill Spitzak and others. // Copyright 2012 by mattes // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 // USA. // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // #ifndef my_XPM_Image_H #define my_XPM_Image_H # include "FL/Fl_Pixmap.H" class FL_EXPORT my_XPM_Image : public Fl_Pixmap { public: my_XPM_Image(const char* filename, void *vxpm, int xlen ); }; #endif // !my_XPM_Image ------------------------- --- my_XPM_Image.cpp --- // "$Id: my_XPM_Image.cpp,v 1.3 2012/02/08 23:42:57 mattes Exp $" // // Fl_XPM_Image routines. // // Copyright 1997-2005 by Bill Spitzak and others. // Copyright 2012 by mattes // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the Free Software // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 // USA. // // Please report all bugs and problems on the following page: // // http://www.fltk.org/str.php // // Contents: // // // // Include necessary header files... // #include <FL/Fl.H> #include <FL/Fl_XPM_Image.H> #include <stdio.h> #include <stdlib.h> #include <ctype.h> //isdigit #include <string.h> //memcpy #include "my_XPM_Image.h" // // 'hexdigit()' - Convert a hex digit to an integer. // static int hexdigit(int x) { // I - Hex digit... if (isdigit(x)) return x-'0'; if (isupper(x)) return x-'A'+10; if (islower(x)) return x-'a'+10; return 20; } static char* memgets( void **xptr,int *xlen, char *buf,int bufsize ) { // emulate fgets() func by reading the data from memory buffer // return string by string // xptr = filepointer to the next string // xlen = remaing len of data in buffer char *mptr = (char *) *xptr; int mlen = *xlen; // find next '\n' const char *s = strchr(mptr, '\n'); if ( s == NULL ) return NULL; int l = s - mptr +1; //+1 for CR if ( l > bufsize-1 ) l = bufsize-1; // don't overrun buf (limit memcpy to bufsize) memcpy ( buf, mptr, l ); buf[l] = '\0'; //terminate buffer // update xptr mptr += l; mlen -= l; *xptr = mptr; *xlen = mlen; return buf; } #define MAXSIZE 2048 #define INITIALLINES 256 my_XPM_Image::my_XPM_Image( const char *name, void *vxpm,int xlen) : Fl_Pixmap((char *const*)0 ) { FILE *f = NULL; void *xpmptr = vxpm; int xpmlen = xlen; if ( vxpm == NULL || xlen <= 0) { if ((f = fopen(name, "rb")) == NULL) return; } // read all the c-strings out of the file: char** new_data = new char *[INITIALLINES]; char** temp_data; int malloc_size = INITIALLINES; char buffer[MAXSIZE+20]; int i = 0; int frsize = 0; //while (fgets(buffer,MAXSIZE+20,f)) { while ( 1 ) { char *cs = NULL; if ( vxpm == NULL || xlen <= 0) { cs = fgets(buffer,MAXSIZE+20,f); } else { cs = memgets( &xpmptr, &xpmlen, buffer, MAXSIZE+20 ); } if ( cs == NULL ) break; frsize += strlen(buffer); if (buffer[0] != '\"') continue; char *myp = buffer; char *q = buffer+1; while (*q != '\"' && myp < buffer+MAXSIZE) { if (*q == '\\') switch (*++q) { case '\r': case '\n': if ( vxpm == NULL || xlen <= 0) { fgets(buffer,MAXSIZE+20,f); } else { memgets( &xpmptr, &xpmlen, buffer, MAXSIZE+20 ); } case 0: break; case 'x': { q++; int n = 0; for (int x = 0; x < 3; x++) { int xd = hexdigit(*q); if (xd > 15) break; n = (n<<4)+xd; q++; } *myp++ = n; } break; default: { int c = *q++; if (c>='0' && c<='7') { c -= '0'; for (int x=0; x<2; x++) { int xd = hexdigit(*q); if (xd>7) break; c = (c<<3)+xd; q++; } } *myp++ = c; } break; } else { *myp++ = *q++; } // if(q } //while(q *myp++ = 0; if (i >= malloc_size) { temp_data = new char *[malloc_size + INITIALLINES]; memcpy(temp_data, new_data, sizeof(char *) * malloc_size); delete[] new_data; new_data = temp_data; malloc_size += INITIALLINES; } new_data[i] = new char[myp-buffer+1]; memcpy(new_data[i], buffer,myp-buffer); new_data[i][myp-buffer] = 0; i++; } //while fgets if ( f ) fclose(f); data((const char **)new_data, i); alloc_data = 1; measure(); } _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
