This commit was manufactured by cvs2svn to create branch 'start'.

[helm.git] / helm / DEVEL / lablgtkmathview / gMathView.ml

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+(* Copyright (C) 2000, Luca Padovani <luca.padovani@cs.unibo.it>.
+ *
+ * This file is part of lablgtkmathview, the Ocaml binding
+ * for the GtkMathView widget.
+ * 
+ * lablgtkmathview is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * lablgtkmathview 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with lablgtkmathview; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ * 
+ * For details, send a mail to the author.
+ *)
+
+open Gaux
+open Gtk
+open Gtk_mathview
+open GtkBase
+open GtkMathView
+open GObj
+
+exception ErrorLoadingFile of string;;
+exception ErrorWritingFile of string;;
+exception NoSelection;;
+
+class math_view_signals obj = object
+  inherit GContainer.container_signals obj
+  method clicked = GtkSignal.connect ~sgn:MathView.Signals.clicked obj ~after
+  method jump = GtkSignal.connect ~sgn:MathView.Signals.jump obj ~after
+  method selection_changed =
+  GtkSignal.connect ~sgn:MathView.Signals.selection_changed obj ~after
+end
+
+class math_view obj = object
+ inherit GContainer.container (obj : Gtk_mathview.math_view obj)
+ method connect = new math_view_signals obj
+ method load ~filename =
+  if not (MathView.load obj ~filename) then raise (ErrorLoadingFile filename)
+ method unload = MathView.unload obj
+ method get_selection = MathView.get_selection obj
+ method set_selection (node : Ominidom.o_mDOMNode option) = MathView.set_selection obj node
+ method get_width = MathView.get_width obj
+ method get_height = MathView.get_height obj
+ method get_top = MathView.get_top obj
+ method set_top = MathView.set_top obj
+ method set_adjustments =
+  fun adj1 adj2 ->
+   MathView.set_adjustments obj (GData.as_adjustment adj1)
+   (GData.as_adjustment adj2)
+ method get_hadjustment = new GData.adjustment (MathView.get_hadjustment obj)
+ method get_vadjustment = new GData.adjustment (MathView.get_vadjustment obj)
+ method get_buffer = MathView.get_buffer obj
+ method get_frame = new GBin.frame (MathView.get_frame obj)
+ method set_font_size = MathView.set_font_size obj
+ method get_font_size = MathView.get_font_size obj
+ method set_anti_aliasing = MathView.set_anti_aliasing obj
+ method get_anti_aliasing = MathView.get_anti_aliasing obj
+ method set_kerning = MathView.set_kerning obj
+ method get_kerning = MathView.get_kerning obj
+ method set_log_verbosity = MathView.set_log_verbosity obj
+ method get_log_verbosity = MathView.get_log_verbosity obj
+ method export_to_postscript
+       ?(width = 595) ?(height = 822) ?(x_margin = 72) ?(y_margin = 72)
+       ?(disable_colors = false) ~filename () =
+  let result = MathView.export_to_postscript obj
+       ~width ~height ~x_margin ~y_margin ~disable_colors ~filename
+  in
+  if not result then raise (ErrorWritingFile filename)
+ method get_font_manager_type = MathView.get_font_manager_type obj
+ method set_font_manager_type ~fm_type = MathView.set_font_manager_type obj ~fm_type
+end
+
+let math_view ?adjustmenth ?adjustmentv ?font_size ?font_manager ?border_width
+ ?width ?height ?packing ?show () =
+ let w =
+   MathView.create
+    ?adjustmenth:(may_map ~f:GData.as_adjustment adjustmenth)
+    ?adjustmentv:(may_map ~f:GData.as_adjustment adjustmentv)
+    ()
+ in
+  Container.set w ?border_width ?width ?height;
+ let mathview = pack_return (new math_view w) ~packing ~show in
+ begin
+    match font_size with
+    | Some size -> mathview#set_font_size size
+    | None      -> ()
+  end;
+  begin
+    match font_manager with
+    | Some manager -> mathview#set_font_manager_type ~fm_type:manager
+    | None         -> ()
+  end;
+  mathview
+;;