Fluid Source Code preview panel with automatic refresh and selected object code highlighting.

git-svn-id: file:///fltk/svn/fltk/branches/branch-1.1@4630 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 149 insertions, 1 deletions

diff --git a/fluid/fluid.cxx b/fluid/fluid.cxx
index 789d1bac0..cf52c3260 100644
--- a/fluid/fluid.cxx
+++ b/fluid/fluid.cxx
@@ -381,6 +381,14 @@ void exit_cb(Fl_Widget *,void *) {
     save_position(widgetbin_panel,"widgetbin_pos");
     delete widgetbin_panel;
   }
+  if (sourceview_panel) {
+    Fl_Preferences svp(fluid_prefs, "sourceview");
+    svp.set("autorefresh", sv_autorefresh->value());
+    svp.set("autoposition", sv_autoposition->value());
+    svp.set("tab", sv_tab->find(sv_tab->value()));
+    save_position(sourceview_panel,"sourceview_pos");
+    delete sourceview_panel;
+  }
   if (about_panel)
     delete about_panel;
   if (help_dialog)
@@ -1550,6 +1558,7 @@ void print_cb(Fl_Return_Button *, void *) {
 extern Fl_Menu_Item New_Menu[];
 
 void toggle_widgetbin_cb(Fl_Widget *, void *);
+void toggle_sourceview_cb(Fl_Double_Window *, void *);
 
 Fl_Menu_Item Main_Menu[] = {
 {"&File",0,0,0,FL_SUBMENU},
@@ -1596,7 +1605,9 @@ Fl_Menu_Item Main_Menu[] = {
   {"Ung&roup", FL_F+8, ungroup_cb,0, FL_MENU_DIVIDER},
   {"Hide O&verlays",FL_CTRL+FL_SHIFT+'o',toggle_overlays},
 #define WIDGETBIN_ITEM 41
-  {"Show Widget &Bin...",FL_ALT+'b',toggle_widgetbin_cb, 0, FL_MENU_DIVIDER},
+  {"Show Widget &Bin...",FL_ALT+'b',toggle_widgetbin_cb},
+#define SOURCEVIEW_ITEM 42
+  {"Show Source Code...",FL_ALT+FL_SHIFT+'s', (Fl_Callback*)toggle_sourceview_cb, 0, FL_MENU_DIVIDER},
   {"Pro&ject Settings...",FL_ALT+'p',show_project_cb},
   {"GU&I Settings...",FL_ALT+FL_SHIFT+'p',show_settings_cb},
   {0},
@@ -1688,6 +1699,37 @@ void toggle_widgetbin_cb(Fl_Widget *, void *) {
 }
 
 
+void toggle_sourceview_cb(Fl_Double_Window *, void *) {
+  if (!sourceview_panel) {
+    make_sourceview();
+    sourceview_panel->callback((Fl_Callback*)toggle_sourceview_cb);
+    Fl_Preferences svp(fluid_prefs, "sourceview");
+    int autorefresh;
+    svp.get("autorefresh", autorefresh, 1);
+    sv_autorefresh->value(autorefresh);
+    int autoposition;
+    svp.get("autoposition", autoposition, 1);
+    sv_autoposition->value(autoposition);
+    int tab;
+    svp.get("tab", tab, 0);
+    if (tab>=0 && tab<sv_tab->children()) sv_tab->value(sv_tab->child(tab));
+    if (!position_window(sourceview_panel,"sourceview_pos", 0, 320, 120, 550, 500)) return;
+  }
+
+  if (sourceview_panel->visible()) {
+    sourceview_panel->hide();
+    Main_Menu[SOURCEVIEW_ITEM].label("Show Source Code...");
+  } else {
+    sourceview_panel->show();
+    Main_Menu[SOURCEVIEW_ITEM].label("Hide Source Code...");
+    update_sourceview_cb(0,0);
+  }
+}
+
+void toggle_sourceview_b_cb(Fl_Button*, void *) {
+  toggle_sourceview_cb(0,0);
+}
+
 void make_main_window() {
   fluid_prefs.get("snap", snap, 1);
   fluid_prefs.get("gridx", gridx, 5);
@@ -1933,6 +1975,102 @@ void set_filename(const char *c) {
   set_modflag(modflag);
 }
 
+//
+// The Source View system offers an immediate preview of the code 
+// files that will be generated by FLUID. It also marks the code
+// generated for the last selected item in the header and the source
+// file.
+//
+// Can we patent this?  ;-)  - Matt, mm@matthiasm.com
+//
+
+//
+// Update the header and source code highlighting depending on the
+// currently selected object
+//
+void update_sourceview_position()
+{
+  if (sv_autoposition->value()==0) 
+    return;
+  if (sourceview_panel && sourceview_panel->visible() && Fl_Type::current) {
+    int pos0, pos1;
+    if (sv_source->visible_r()) {
+      pos0 = Fl_Type::current->code_line;
+      pos1 = Fl_Type::current->code_line_end;
+      if (pos0>=0) {
+        if (pos1<pos0)
+          pos1 = pos0;
+        sv_source->buffer()->highlight(pos0, pos1);
+        int line = sv_source->buffer()->count_lines(0, pos0);
+        sv_source->scroll(line, 0);
+      }
+    }
+    if (sv_header->visible_r()) {
+      pos0 = Fl_Type::current->header_line;
+      pos1 = Fl_Type::current->header_line_end;
+      if (pos0>=0) {
+        if (pos1<pos0)
+          pos1 = pos0;
+        sv_header->buffer()->highlight(pos0, pos1);
+        int line = sv_header->buffer()->count_lines(0, pos0);
+        sv_header->scroll(line, 0);
+      }
+    }
+  }
+}
+
+void update_sourceview_position_cb(Fl_Tabs*, void*) 
+{
+  update_sourceview_position();
+}
+
+static char *sv_source_filename = 0;
+static char *sv_header_filename = 0;
+
+//
+// Generate a header and source file in a temporary directory and
+// load those into the Code Viewer widgets.
+//
+void update_sourceview_cb(Fl_Button*, void*) 
+{
+  // generate space for the source and header file filenames
+  if (!sv_source_filename) {
+    sv_source_filename = (char*)malloc(FL_PATH_MAX);
+    fluid_prefs.getUserdataPath(sv_source_filename, FL_PATH_MAX);
+    strlcat(sv_source_filename, "source_view_tmp.cxx", FL_PATH_MAX);
+  }
+  if (!sv_header_filename) {
+    sv_header_filename = (char*)malloc(FL_PATH_MAX);
+    fluid_prefs.getUserdataPath(sv_header_filename, FL_PATH_MAX);
+    strlcat(sv_header_filename, "source_view_tmp.h", FL_PATH_MAX);
+  }
+  // generate the code and load the files
+  if (sourceview_panel && sourceview_panel->visible())
+  {
+    write_sourceview = 1;
+    // generate files
+    if (write_code(sv_source_filename, sv_header_filename)) 
+    {
+      // load file into source editor
+      int pos = sv_source->top_line();
+      sv_source->buffer()->loadfile(sv_source_filename);
+      sv_source->scroll(pos, 0);
+      // load file into header editor
+      pos = sv_header->top_line();
+      sv_header->buffer()->loadfile(sv_header_filename);
+      sv_header->scroll(pos, 0);
+      // update the source code highlighting
+      update_sourceview_position();
+    }
+    write_sourceview = 0;
+  }
+}
+
+void update_sourceview_timer(void*) 
+{
+  update_sourceview_cb(0,0);
+}
+
 // Set the "modified" flag and update the title of the main window...
 void set_modflag(int mf) {
   const char	*basename;
@@ -1953,6 +2091,15 @@ void set_modflag(int mf) {
       main_window->label(title);
     } else main_window->label(basename);
   }
+  // if the UI was modified in any way, update the Source View panel
+  if (sourceview_panel && sourceview_panel->visible() && sv_autorefresh->value())
+  {
+    // we will only update ealiest 0.5 seconds after the last change, and only
+    // if no other change was made, so dragging a widget will not generate any
+    // CPU load
+    Fl::remove_timeout(update_sourceview_timer, 0);
+    Fl::add_timeout(0.5, update_sourceview_timer, 0);
+  }
 
   // Enable/disable the Save menu item...
   if (modflag) Main_Menu[SAVE_ITEM].activate();
@@ -2030,6 +2177,7 @@ int main(int argc,char **argv) {
     position_window(main_window,"main_window_pos", 1, 10, 30, WINWIDTH, WINHEIGHT );
     main_window->show(argc,argv);
     toggle_widgetbin_cb(0,0);
+    toggle_sourceview_cb(0,0);
     if (!c && openlast_button->value() && absolute_history[0][0]) {
       // Open previous file when no file specified...
       open_history_cb(0, absolute_history[0]);