Reorganized Fluid Template feature (STR #3336).

CHANGES.txt

@@ -145,6 +145,7 @@ Changes in FLTK 1.4.0					Released: ??? ?? 2019
   Bug Fixes
 
   - (add new items here)
+  - Reorganized Fluid Template feature (STR #3336).
   - Updated Fluid documentation and image (STR #3328).
   - Duplicating Widget Class in Fluid no longer crashes (STR #3445).
   - Fl_Check_Browser::add(item) now accepts NULL (STR #3498).

documentation/src/fluid.dox

@@ -16,6 +16,7 @@ Subchapters:
 \li \ref fluid_compiling_fl_files
 \li \ref fluid_tutorial
 \li \ref fluid_references
+\li \ref fluid_templates
 \li \ref fluid_i18n
 \li \ref fluid_limitations
 
@@ -1445,6 +1446,33 @@ RGB or grayscale data to the source file. PNG images can provide
 a full alpha channel for partial transparency, and FLTK supports
 this as best as possible on each platform.
 
+\section fluid_templates FLUID Templates
+
+\par
+Fluid can store a number of project templates. Project templates
+are great for storing often used boilerplate code for fast access.
+A common use would be projects with readily prepared copyright 
+messages.
+
+\par
+A sample template for FLTK projects is included with Fluid.
+
+\par
+Choose "File > New From Template..." to create a new project
+based on a template file. In the template dialog, select one of
+the existing templates.  All occurrences of the word 
+"@INSTANCE@" in the template are replaced with the text in 
+the "Instance" field. To create the new project click "New".
+
+\par
+To add your current project as a new template, choose 
+"File > Save As Template...", fill in a name, and click "Save".
+
+\par
+To delete a template, open the template dialog using 
+"New from Template" or "Save As Template", the select any 
+existing template, and click "Delete Template".
+
 \section fluid_i18n Internationalization with FLUID
 
 FLUID supports internationalization (I18N for short) of label

fluid/fluid.cxx

@@ -581,13 +581,21 @@ void new_cb(Fl_Widget *, void *v) {
                       "Save", "Don't Save"))
     {
       case 0 : /* Cancel */
-          return;
+        return;
       case 1 : /* Save */
-          save_cb(NULL, NULL);
-	  if (modflag) return;	// Didn't save!
+        save_cb(NULL, NULL);
+        if (modflag) return;  // Didn't save!
     }
   }
 
+  // Clear the current data...
+  delete_all();
+  set_filename(NULL);
+}
+
+void new_from_template_cb(Fl_Widget *w, void *v) {
+  new_cb(w, v);
+
   // Setup the template panel...
   if (!template_panel) make_template_panel();
 
@@ -602,17 +610,17 @@ void new_cb(Fl_Widget *, void *v) {
   template_instance->deactivate();
   template_instance->value("");
 
-  template_delete->hide();
+  template_delete->show();
 
   template_submit->label("New");
   template_submit->deactivate();
 
   template_panel->label("New");
 
-  if ( template_browser->size() == 1 ) { // only one item?
+  //if ( template_browser->size() == 1 ) { // only one item?
     template_browser->value(1);          // select it
     template_browser->do_callback();
-  }
+  //}
 
   // Show the panel and wait for the user to do something...
   template_panel->show();
@@ -622,10 +630,6 @@ void new_cb(Fl_Widget *, void *v) {
   int item = template_browser->value();
   if (item < 1) return;
 
-  // Clear the current data...
-  delete_all();
-  set_filename(NULL);
-
   // Load the template, if any...
   const char *tname = (const char *)template_browser->data(item);
 
@@ -1041,14 +1045,15 @@ void toggle_sourceview_cb(Fl_Double_Window *, void *);
 
 Fl_Menu_Item Main_Menu[] = {
 {"&File",0,0,0,FL_SUBMENU},
-  {"&New...", FL_COMMAND+'n', new_cb, 0},
+  {"&New", FL_COMMAND+'n', new_cb, 0},
   {"&Open...", FL_COMMAND+'o', open_cb, 0},
   {"&Insert...", FL_COMMAND+'i', open_cb, (void*)1, FL_MENU_DIVIDER},
   {"&Save", FL_COMMAND+'s', save_cb, 0},
   {"Save &As...", FL_COMMAND+FL_SHIFT+'s', save_cb, (void*)1},
   {"Sa&ve A Copy...", 0, save_cb, (void*)2},
-  {"Save &Template...", 0, save_template_cb},
   {"&Revert...", 0, revert_cb, 0, FL_MENU_DIVIDER},
+  {"New &From Template...", FL_COMMAND+'N', new_from_template_cb, 0},
+  {"Save As &Template...", 0, save_template_cb, 0, FL_MENU_DIVIDER},
   {"&Print...", FL_COMMAND+'p', print_menu_cb},
   {"Write &Code...", FL_COMMAND+FL_SHIFT+'c', write_cb, 0},
   {"&Write Strings...", FL_COMMAND+FL_SHIFT+'w', write_strings_cb, 0, FL_MENU_DIVIDER},

fluid/template_panel.cxx

@@ -220,6 +220,30 @@ void template_load() {
   fluid_prefs.getUserdataPath(path, sizeof(path));
   strlcat(path, "templates", sizeof(path));
   
+  int sample_templates_generated = 0;
+  fluid_prefs.get("sample_templates_generated", sample_templates_generated, 0);
+  
+  if (!sample_templates_generated) {
+    strcpy(filename, path);
+    strcat(filename, "/FLTK_License.fl");
+    FILE *f = fopen(filename, "wb");
+    if (f) {
+      fputs(
+  "# data file for the Fltk User Interface Designer (fluid)\nversion 1.0400\nheader_name {.h}\n"
+  "code_name {.cxx}\ncomment {//\n// \"$Id$\"\n//\n// @INSTANCE@ for the Fast Light Tool Kit (FLT"
+  "K).\n//\n// Copyright 1998-2019 by Bill Spitzak and others.\n//\n// This library is free sof"
+  "tware. Distribution and use rights are outlined in\n// the file \"COPYING\" which should have "
+  "been included with this file.  If this\n// file is missing or damaged, see the license at:\n"
+  "//\n//     http://www.fltk.org/COPYING.php\n//\n// Please report all bugs and problems on th"
+  "e following page:\n//\n//     http://www.fltk.org/str.php\n//\n} {selected in_source in_head"
+  "er\n}\n\ncomment {\n//\n// End of \"$Id$\".\n//} {in_source in_header\n}\n", f);
+      fclose(f);
+    }
+    sample_templates_generated = 1;
+    fluid_prefs.set("sample_templates_generated", sample_templates_generated);
+    fluid_prefs.flush();
+  }
+  
   num_files = fl_filename_list(path, &files);
   
   for (i = 0; i < num_files; i ++) {

fluid/template_panel.fl

@@ -129,7 +129,7 @@ if (img) {
       callback {if (strlen(template_name->value())) {
   template_submit->activate();
   if (Fl::event_key() == FL_Enter) template_panel->hide();
-} else template_submit->deactivate();} selected
+} else template_submit->deactivate();}
       xywh {198 288 252 25} labelfont 1 when 3 textfont 4
     }
     Fl_Input template_instance {
@@ -206,7 +206,7 @@ template_browser->remove(item);
 template_browser->do_callback();} {}
 }
 
-Function {template_load()} {return_type void
+Function {template_load()} {open return_type void
 } {
   code {int i;
 char name[1024], filename[1024], path[1024], *ptr;
@@ -216,6 +216,30 @@ int num_files;
 fluid_prefs.getUserdataPath(path, sizeof(path));
 strlcat(path, "templates", sizeof(path));
 
+int sample_templates_generated = 0;
+fluid_prefs.get("sample_templates_generated", sample_templates_generated, 0);
+
+if (!sample_templates_generated) {
+  strcpy(filename, path);
+  strcat(filename, "/FLTK_License.fl");
+  FILE *f = fopen(filename, "wb");
+  if (f) {
+    fputs(
+"\# data file for the Fltk User Interface Designer (fluid)\\nversion 1.0400\\nheader_name {.h}\\n"
+"code_name {.cxx}\\ncomment {//\\n// \\"$Id$\\"\\n//\\n// @INSTANCE@ for the Fast Light Tool Kit (FLT"
+"K).\\n//\\n// Copyright 1998-2019 by Bill Spitzak and others.\\n//\\n// This library is free sof"
+"tware. Distribution and use rights are outlined in\\n// the file \\"COPYING\\" which should have "
+"been included with this file.  If this\\n// file is missing or damaged, see the license at:\\n"
+"//\\n//     http://www.fltk.org/COPYING.php\\n//\\n// Please report all bugs and problems on th"
+"e following page:\\n//\\n//     http://www.fltk.org/str.php\\n//\\n} {selected in_source in_head"
+"er\\n}\\n\\ncomment {\\n//\\n// End of \\"$Id$\\".\\n//} {in_source in_header\\n}\\n", f);
+    fclose(f);
+  }
+  sample_templates_generated = 1;
+  fluid_prefs.set("sample_templates_generated", sample_templates_generated);
+  fluid_prefs.flush();
+}
+
 num_files = fl_filename_list(path, &files);
 
 for (i = 0; i < num_files; i ++) {
@@ -237,7 +261,8 @@ for (i = 0; i < num_files; i ++) {
   free(files[i]);
 }
 
-if (num_files > 0) free(files);} {}
+if (num_files > 0) free(files);} {selected
+  }
 }
 
 comment {