Fl_File_Icon.cxx

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//
// "$Id$"
//
// Fl_File_Icon routines.
//
// KDE icon code donated by Maarten De Boer.
//
// Copyright 1999-2010 by Michael Sweet.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file.  If this
// file is missing or damaged, see the license at:
//
//     http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
//     http://www.fltk.org/str.php
//
// Contents:
//
//   Fl_File_Icon::Fl_File_Icon()       - Create a new file icon.
//   Fl_File_Icon::~Fl_File_Icon()      - Remove a file icon.
//   Fl_File_Icon::add()               - Add data to an icon.
//   Fl_File_Icon::find()              - Find an icon based upon a given file.
//   Fl_File_Icon::draw()              - Draw an icon.
//   Fl_File_Icon::label()             - Set the widgets label to an icon.
//   Fl_File_Icon::labeltype()         - Draw the icon label.
//
 
//
// Include necessary header files...
//
 
#include <stdio.h>
#include <stdlib.h>
#include <FL/fl_utf8.h>
#include "flstring.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#if (defined(WIN32) && ! defined(__CYGWIN__)) || defined(__EMX__)
#  include <io.h>
#  define F_OK  0
#else
#  include <unistd.h>
#endif /* WIN32 || __EMX__ */
 
#include <FL/Fl_File_Icon.H>
#include <FL/Fl_Widget.H>
#include <FL/fl_draw.H>
#include <FL/filename.H>
 
 
//
// Define missing POSIX/XPG4 macros as needed...
//
 
#ifndef S_ISDIR
#  define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK)
#  define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR)
#  define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#  define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO)
#  define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
#endif /* !S_ISDIR */
 
 
//
// Icon cache...
//
 
Fl_File_Icon    *Fl_File_Icon::first_ = (Fl_File_Icon *)0;
 
 
Fl_File_Icon::Fl_File_Icon(const char *p,   /* I - Filename pattern */
                       int        t,    /* I - File type */
               int        nd,   /* I - Number of data values */
               short      *d)   /* I - Data values */
{
  // Initialize the pattern and type...
  pattern_ = p;
  type_    = t;
 
  // Copy icon data as needed...
  if (nd)
  {
    num_data_   = nd;
    alloc_data_ = nd + 1;
    data_       = (short *)calloc(sizeof(short), nd + 1);
    memcpy(data_, d, nd * sizeof(short));
  }
  else
  {
    num_data_   = 0;
    alloc_data_ = 0;
  }
 
  // And add the icon to the list of icons...
  next_  = first_;
  first_ = this;
}
 
 
Fl_File_Icon::~Fl_File_Icon() {
  Fl_File_Icon  *current,   // Current icon in list
        *prev;      // Previous icon in list
 
 
  // Find the icon in the list...
  for (current = first_, prev = (Fl_File_Icon *)0;
       current != this && current != (Fl_File_Icon *)0;
       prev = current, current = current->next_) {/*empty*/}
 
  // Remove the icon from the list as needed...
  if (current)
  {
    if (prev)
      prev->next_ = current->next_;
    else
      first_ = current->next_;
  }
 
  // Free any memory used...
  if (alloc_data_)
    free(data_);
}
 
 
short *             // O - Pointer to new data value
Fl_File_Icon::add(short d)  // I - Data to add
{
  short *dptr;          // Pointer to new data value
 
 
  // Allocate/reallocate memory as needed
  if ((num_data_ + 1) >= alloc_data_)
  {
    alloc_data_ += 128;
 
    if (alloc_data_ == 128)
      dptr = (short *)malloc(sizeof(short) * alloc_data_);
    else
      dptr = (short *)realloc(data_, sizeof(short) * alloc_data_);
 
    if (dptr == NULL)
      return (NULL);
 
    data_ = dptr;
  }
 
  // Store the new data value and return
  data_[num_data_++] = d;
  data_[num_data_]   = END;
 
  return (data_ + num_data_ - 1);
}
 
 
Fl_File_Icon *              // O - Matching file icon or NULL
Fl_File_Icon::find(const char *filename,// I - Name of file */
                   int        filetype) // I - Enumerated file type
{
  Fl_File_Icon  *current;       // Current file in list
#ifndef WIN32
  struct stat   fileinfo;       // Information on file
#endif // !WIN32
  const char    *name;          // Base name of filename
 
 
  // Get file information if needed...
  if (filetype == ANY)
  {
#ifdef WIN32
    if (filename[strlen(filename) - 1] == '/')
      filetype = DIRECTORY;
    else if (fl_filename_isdir(filename))
      filetype = DIRECTORY;
    else
      filetype = PLAIN;
#else
    if (!fl_stat(filename, &fileinfo))
    {
      if (S_ISDIR(fileinfo.st_mode))
        filetype = DIRECTORY;
#  ifdef S_IFIFO
      else if (S_ISFIFO(fileinfo.st_mode))
        filetype = FIFO;
#  endif // S_IFIFO
#  if defined(S_ICHR) && defined(S_IBLK)
      else if (S_ISCHR(fileinfo.st_mode) || S_ISBLK(fileinfo.st_mode))
        filetype = DEVICE;
#  endif // S_ICHR && S_IBLK
#  ifdef S_ILNK
      else if (S_ISLNK(fileinfo.st_mode))
        filetype = LINK;
#  endif // S_ILNK
      else
        filetype = PLAIN;
    }
    else
      filetype = PLAIN;
#endif // WIN32
  }
 
  // Look at the base name in the filename
  name = fl_filename_name(filename);
 
  // Loop through the available file types and return any match that
  // is found...
  for (current = first_; current != (Fl_File_Icon *)0; current = current->next_)
    if ((current->type_ == filetype || current->type_ == ANY) &&
        (fl_filename_match(filename, current->pattern_) ||
     fl_filename_match(name, current->pattern_)))
      break;
 
  // Return the match (if any)...
  return (current);
}
 
void
Fl_File_Icon::draw(int      x,      // I - Upper-lefthand X
               int      y,      // I - Upper-lefthand Y
           int      w,      // I - Width of bounding box
           int      h,      // I - Height of bounding box
               Fl_Color ic,     // I - Icon color...
               int      active) // I - Active or inactive?
{
  Fl_Color  c,      // Current color
        oc;     // Outline color
  short     *d,     // Pointer to data
        *dend;      // End of data...
  short     *prim;      // Pointer to start of primitive...
  double    scale;      // Scale of icon
 
 
  // Don't try to draw a NULL array!
  if (num_data_ == 0)
    return;
 
  // Setup the transform matrix as needed...
  scale = w < h ? w : h;
 
  fl_push_matrix();
  fl_translate((float)x + 0.5 * ((float)w - scale),
               (float)y + 0.5 * ((float)h + scale));
  fl_scale(scale, -scale);
 
  // Loop through the array until we see an unmatched END...
  d    = data_;
  dend = data_ + num_data_;
  prim = NULL;
  c    = ic;
 
  if (active)
    fl_color(c);
  else
    fl_color(fl_inactive(c));
 
  while (d < dend)
    switch (*d)
    {
      case END :
          if (prim)
            switch (*prim)
        {
          case LINE :
          fl_end_line();
          break;
 
          case CLOSEDLINE :
          fl_end_loop();
          break;
 
          case POLYGON :
          fl_end_complex_polygon();
          break;
 
          case OUTLINEPOLYGON :
          fl_end_complex_polygon();
 
              oc = (Fl_Color)((((unsigned short *)prim)[1] << 16) | 
                          ((unsigned short *)prim)[2]);
                  if (active)
          {
                    if (oc == FL_ICON_COLOR)
              fl_color(ic);
            else
              fl_color(oc);
          }
          else
          {
                    if (oc == FL_ICON_COLOR)
              fl_color(fl_inactive(ic));
            else
              fl_color(fl_inactive(oc));
          }
 
          fl_begin_loop();
 
          prim += 3;
          while (*prim == VERTEX)
          {
            fl_vertex(prim[1] * 0.0001, prim[2] * 0.0001);
            prim += 3;
          }
 
              fl_end_loop();
          fl_color(c);
          break;
        }
 
          prim = NULL;
      d ++;
      break;
 
      case COLOR :
          c = (Fl_Color)((((unsigned short *)d)[1] << 16) | 
                       ((unsigned short *)d)[2]);
 
          if (c == FL_ICON_COLOR)
        c = ic;
 
          if (!active)
        c = fl_inactive(c);
 
          fl_color(c);
      d += 3;
      break;
 
      case LINE :
          prim = d;
      d ++;
      fl_begin_line();
      break;
 
      case CLOSEDLINE :
          prim = d;
      d ++;
      fl_begin_loop();
      break;
 
      case POLYGON :
          prim = d;
      d ++;
      fl_begin_complex_polygon();
      break;
 
      case OUTLINEPOLYGON :
          prim = d;
      d += 3;
      fl_begin_complex_polygon();
      break;
 
      case VERTEX :
          if (prim)
        fl_vertex(d[1] * 0.0001, d[2] * 0.0001);
      d += 3;
      break;
 
      default : // Ignore invalid data...
          d ++;
    }
 
  // If we still have an open primitive, close it...
  if (prim)
    switch (*prim)
    {
      case LINE :
      fl_end_line();
      break;
 
      case CLOSEDLINE :
      fl_end_loop();
      break;
 
      case POLYGON :
      fl_end_polygon();
      break;
 
      case OUTLINEPOLYGON :
      fl_end_polygon();
 
          oc = (Fl_Color)((((unsigned short *)prim)[1] << 16) | 
                      ((unsigned short *)prim)[2]);
          if (active)
      {
            if (oc == FL_ICON_COLOR)
          fl_color(ic);
        else
          fl_color(oc);
      }
      else
      {
            if (oc == FL_ICON_COLOR)
          fl_color(fl_inactive(ic));
        else
          fl_color(fl_inactive(oc));
      }
 
      fl_begin_loop();
 
      prim += 3;
      while (*prim == VERTEX)
      {
        fl_vertex(prim[1] * 0.0001, prim[2] * 0.0001);
        prim += 3;
      }
 
          fl_end_loop();
      fl_color(c);
      break;
    }
 
  // Restore the transform matrix
  fl_pop_matrix();
}
 
void Fl_File_Icon::label(Fl_Widget *w)  // I - Widget to label
{
  Fl::set_labeltype(_FL_ICON_LABEL, labeltype, 0);
  w->label(_FL_ICON_LABEL, (const char*)this);
}
 
 
void
Fl_File_Icon::labeltype(const Fl_Label *o,  // I - Label data
                    int            x,   // I - X position of label
            int            y,   // I - Y position of label
            int            w,   // I - Width of label
            int            h,   // I - Height of label
            Fl_Align       a)   // I - Label alignment (not used)
{
  Fl_File_Icon *icon;           // Pointer to icon data
 
 
  (void)a;
 
  icon = (Fl_File_Icon *)(o->value);
  if (icon) icon->draw(x, y, w, h, (Fl_Color)(o->color));
}
 
 
//
// End of "$Id$".
//