Generate copyright year in fluid's about_panel

Copyright year "1998-XXXX" is now generated from current year.
This avoids editing the source code every year.

3 files changed, 33 insertions, 14 deletions

diff --git a/fluid/about_panel.cxx b/fluid/about_panel.cxx
index c9cd7b22a..d4ef95098 100644
--- a/fluid/about_panel.cxx
+++ b/fluid/about_panel.cxx
@@ -3,17 +3,17 @@
 //
 // About dialog for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2018 by Bill Spitzak and others.
+// Copyright 1998-2020 by Bill Spitzak and others.
 //
 // 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
+//     https://www.fltk.org/COPYING.php
 //
 // Please report all bugs and problems on the following page:
 //
-//     http://www.fltk.org/str.php
+//     https://www.fltk.org/str.php
 //
 
 // generated by Fast Light User Interface Designer (fluid) version 1.0400
@@ -265,6 +265,12 @@ static void cb_Close(Fl_Return_Button* o, void*) {
 }
 
 Fl_Double_Window* make_about_panel() {
+  static char cbuf[200] = "";
+    if (!cbuf[0]) {
+      time_t t = time(0);
+      struct tm *lt = localtime(&t);
+      sprintf(cbuf, "Copyright © 1998 - %d\nby Bill Spitzak and others", lt->tm_year+1900);
+    }
   { about_panel = new Fl_Double_Window(345, 180, "About FLUID");
     about_panel->color(FL_LIGHT1);
     about_panel->selection_color(FL_DARK1);
@@ -282,8 +288,10 @@ Fl_Double_Window* make_about_panel() {
       snprintf(about,sizeof(about),"FLTK User\nInterface Designer\nVersion %d.%d.%d",FL_MAJOR_VERSION,FL_MINOR_VERSION,FL_PATCH_VERSION);
       o->copy_label(about);
     } // Fl_Box* o
-    { Fl_Box* o = new Fl_Box(135, 90, 200, 45, "Copyright 1998-2018 by\nBill Spitzak and others");
+    { // Label edited dynamically:
+      Fl_Box* o = new Fl_Box(135, 90, 200, 45, "(Copyright)");
       o->align(Fl_Align(132|FL_ALIGN_INSIDE));
+      o->label(cbuf);
     } // Fl_Box* o
     { Fl_Button* o = new Fl_Button(115, 145, 123, 25, "View License...");
       o->labelcolor(FL_DARK_BLUE);
diff --git a/fluid/about_panel.fl b/fluid/about_panel.fl
index bb54debf6..be0003c72 100644
--- a/fluid/about_panel.fl
+++ b/fluid/about_panel.fl
@@ -7,29 +7,38 @@ comment {//
 //
 // About dialog for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2018 by Bill Spitzak and others.
+// Copyright 1998-2020 by Bill Spitzak and others.
 //
 // 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
+//     https://www.fltk.org/COPYING.php
 //
 // Please report all bugs and problems on the following page:
 //
-//     http://www.fltk.org/str.php
+//     https://www.fltk.org/str.php
 //
 } {in_source in_header
 }
 
+decl {\#include <time.h>} {public global
+}
+
 decl {void show_help(const char *name);} {public local
 }
 
 Function {make_about_panel()} {open
 } {
+  code {static char cbuf[200] = "";
+  if (!cbuf[0]) {
+    time_t t = time(0);
+    struct tm *lt = localtime(&t);
+    sprintf(cbuf, "Copyright © 1998 - %d\\nby Bill Spitzak and others", lt->tm_year+1900);
+  }} {}
   Fl_Window about_panel {
-    label {About FLUID} open selected
-    xywh {340 195 345 180} type Double color 50 selection_color 47 hide hotspot
+    label {About FLUID} open
+    xywh {340 190 345 180} type Double color 50 selection_color 47 hide hotspot
     code0 {\#include "../src/flstring.h"} non_modal
   } {
     Fl_Box {} {
@@ -45,9 +54,10 @@ Version x.x.x}
       code2 {o->copy_label(about);}
     }
     Fl_Box {} {
-      label {Copyright 1998-2018 by
-Bill Spitzak and others}
+      label {(Copyright)}
+      comment {Label edited dynamically:} selected
       xywh {135 90 200 45} align 148
+      code0 {o->label(cbuf);}
     }
     Fl_Button {} {
       label {View License...}
diff --git a/fluid/about_panel.h b/fluid/about_panel.h
index 3c8fd44e6..2a7c69903 100644
--- a/fluid/about_panel.h
+++ b/fluid/about_panel.h
@@ -3,17 +3,17 @@
 //
 // About dialog for the Fast Light Tool Kit (FLTK).
 //
-// Copyright 1998-2018 by Bill Spitzak and others.
+// Copyright 1998-2020 by Bill Spitzak and others.
 //
 // 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
+//     https://www.fltk.org/COPYING.php
 //
 // Please report all bugs and problems on the following page:
 //
-//     http://www.fltk.org/str.php
+//     https://www.fltk.org/str.php
 //
 
 // generated by Fast Light User Interface Designer (fluid) version 1.0400
@@ -21,6 +21,7 @@
 #ifndef about_panel_h
 #define about_panel_h
 #include <FL/Fl.H>
+#include <time.h>
 extern void show_help(const char *name); 
 #include <FL/Fl_Double_Window.H>
 #include "../src/flstring.h"