STR #1381: added optional "precision" argument when writing floats or doubles to a Preferences file.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@5330 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

CHANGES

@@ -1,5 +1,7 @@
 CHANGES IN FLTK 1.1.8
 
+	- Optional precission argument when storing floats or 
+	  doubles in a Preferences file (STR #1381)
 	- Fixed callback not called when using arrow keys
 	  in Fl_Slider (STR #1333)
 	- Changing the shorcut of a widget in fluid now marks

FL/Fl_Preferences.H

@@ -65,7 +65,9 @@ public:
 
   char set( const char *entry, int value );
   char set( const char *entry, float value );
+  char set( const char *entry, float value, int precision );
   char set( const char *entry, double value );
+  char set( const char *entry, double value, int precision );
   char set( const char *entry, const char *value );
   char set( const char *entry, const void *value, int size ); 
 

documentation/Fl_Preferences.html

@@ -181,7 +181,9 @@ group.
 <H4><a name="Fl_Preferences.set">int set(const char *entry, int value)<BR>
 int set(const char *entry, int value)<BR>
 int set(const char *entry, float value)<BR>
+int set(const char *entry, float value, int precision)<BR>
 int set(const char *entry, double value)<BR>
+int set(const char *entry, double value, int precision)<BR>
 int set(const char *entry, const char *text)<BR>
 int set(const char *entry, const void *data, int size)</a></H4>
 

src/Fl_Preferences.cxx

@@ -247,6 +247,19 @@ char Fl_Preferences::set( const char *key, float value )
 {
   sprintf( nameBuffer, "%g", value );
   node->set( key, nameBuffer );
+  float v1 = atof(nameBuffer);
+  return 1;
+}
+
+
+/**
+ * set an entry (name/value pair)
+ */
+char Fl_Preferences::set( const char *key, float value, int precision )
+{
+  sprintf( nameBuffer, "%.*g", precision, value );
+  node->set( key, nameBuffer );
+  float v1 = atof(nameBuffer);
   return 1;
 }
 
@@ -273,6 +286,17 @@ char Fl_Preferences::set( const char *key, double value )
 }
 
 
+/**
+ * set an entry (name/value pair)
+ */
+char Fl_Preferences::set( const char *key, double value, int precision )
+{
+  sprintf( nameBuffer, "%*g", precision, value );
+  node->set( key, nameBuffer );
+  return 1;
+}
+
+
 // remove control sequences from a string
 static char *decodeText( const char *src )
 {

test/hello.cxx

@@ -1,45 +1,22 @@
-//
-// "$Id$"
-//
-// Hello, World! program for the Fast Light Tool Kit (FLTK).
-//
-// Copyright 1998-2005 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 on the following page:
-//
-//     http://www.fltk.org/str.php
-//
-
 #include <FL/Fl.H>
-#include <FL/Fl_Window.H>
+#include <FL/Fl_Gl_Window.H>
-#include <FL/Fl_Box.H>
+#include <stdio.h>
 
-int main(int argc, char **argv) {
+int main(int argc, char **argv)
-  Fl_Window *window = new Fl_Window(300,180);
+{
-  Fl_Box *box = new Fl_Box(FL_UP_BOX,20,40,260,100,"Hello, World!");
+    Fl_Window *window = new Fl_Window(300,200);
-  box->labelfont(FL_BOLD+FL_ITALIC);
+    window->clear_border(); // no border!!
-  box->labelsize(36);
+    window->show();
-  box->labeltype(FL_SHADOW_LABEL);
+
-  window->end();
+    // wait some time
-  window->show(argc, argv);
+    Fl::wait(10.);
-  return Fl::run();
+    window->size(0,0);
-}
 
-//
+    while(true) {
-// End of "$Id$".
+        printf("LOOP ");
-//
+        // doesn't wait....
+        Fl::wait(100.);
+    }
+
+    return 0;
+}