Added XBM, XPM, and PNM image file classes.

The pixmap_browser demo now supports all image formats via Fl_Shared_Image.

Dropped image file stuff from image demo.

Added Fl_Tiled_Image class, which tiles an Fl_Image, useful for tiling a
background image in groups.

Added tiled_image demo.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@1725 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 129 insertions, 0 deletions

diff --git a/src/Fl_XPM_Image.cxx b/src/Fl_XPM_Image.cxx
new file mode 100644
index 000000000..d29429599
--- /dev/null
+++ b/src/Fl_XPM_Image.cxx
@@ -0,0 +1,129 @@
+//
+// "$Id: Fl_XPM_Image.cxx,v 1.1.2.1 2001/11/24 18:07:57 easysw Exp $"
+//
+// Fl_XPM_Image routines.
+//
+// Copyright 1997-2001 by Bill Spitzak and others.
+//
+// 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 to "fltk-bugs@fltk.org".
+//
+// Contents:
+//
+//
+
+//
+// Include necessary header files...
+//
+
+#include <FL/Fl.H>
+#include <FL/Fl_XPM_Image.H>
+#include "config.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.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;
+}
+
+#define MAXSIZE 2048
+#define INITIALLINES 256
+
+Fl_XPM_Image::Fl_XPM_Image(const char *name) : Fl_Pixmap((char *const*)0) {
+  FILE *f;
+
+  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;
+  while (fgets(buffer,MAXSIZE+20,f)) {
+    if (buffer[0] != '\"') continue;
+    char *myp = buffer;
+    char *q = buffer+1;
+    while (*q != '\"' && myp < buffer+MAXSIZE) {
+      if (*q == '\\') switch (*++q) {
+      case '\r':
+      case '\n':
+	fgets(q,(buffer+MAXSIZE+20)-q,f); break;
+      case 0:
+	break;
+      case 'x': {
+	q++;
+	int n = 0;
+	for (int x = 0; x < 3; x++) {
+	  int d = hexdigit(*q);
+	  if (d > 15) break;
+	  n = (n<<4)+d;
+	  q++;
+	}
+	*myp++ = n;
+      } break;
+      default: {
+	int c = *q++;
+	if (c>='0' && c<='7') {
+	  c -= '0';
+	  for (int x=0; x<2; x++) {
+	    int d = hexdigit(*q);
+	    if (d>7) break;
+	    c = (c<<3)+d;
+	    q++;
+	  }
+	}
+	*myp++ = c;
+      } break;
+      } else {
+	*myp++ = *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++;
+  }
+
+  fclose(f);
+
+  data(new_data, i);
+  measure();
+}
+
+
+//
+// End of "$Id: Fl_XPM_Image.cxx,v 1.1.2.1 2001/11/24 18:07:57 easysw Exp $".
+//