- the mathql interpreter is not helm-dependent any more

[helm.git] / helm / DEVEL / lablgtkmathview / ml_gtk_mathview.c

diff --git a/helm/DEVEL/lablgtkmathview/ml_gtk_mathview.c b/helm/DEVEL/lablgtkmathview/ml_gtk_mathview.c
index 2c3d80c8112a86aec568d818b0c52a5048015e95..9a7f98fcf4e2a14a3d97473dc6a1276792399237 100644 (file)
--- a/helm/DEVEL/lablgtkmathview/ml_gtk_mathview.c
+++ b/helm/DEVEL/lablgtkmathview/ml_gtk_mathview.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 2000, Luca Padovani <luca.padovani@cs.unibo.it>.
+/* Copyright (C) 2000-2003, Luca Padovani <luca.padovani@cs.unibo.it>,
+ *                          Claudio Sacerdoti Coen <sacerdot@cs.unibo.it>.
  *
  * This file is part of lablgtkmathview, the Ocaml binding
  * for the GtkMathView widget.
@@ -46,10 +47,13 @@
 #define FontManagerId_val(val) Int_val(val)
 #define Val_FontManagerId(val) Val_int(val)
 
-// As ML_1, but the result is optional
+/* As ML_1, but the result is optional */
 #define OML_1(cname, conv1, conv) \
 value ml_##cname (value arg1) { return Val_option_ptr((cname (conv1 (arg1))),conv); }
-// As ML_2, but the second argument is optional
+/* As ML_3, but the result is optional */
+#define OML_3(cname, conv1, conv2, conv3, conv) \
+value ml_##cname (value arg1, value arg2, value arg3) { return Val_option_ptr((cname (conv1 (arg1), conv2 (arg2), conv3 (arg3))),conv); }
+/* As ML_2, but the second argument is optional */
 #define ML_2O(cname, conv1, conv2, conv) \
 value ml_##cname (value arg1, value arg2) \
 { return conv (cname (conv1(arg1), ptr_val_option(arg2,conv2))); }
@@ -76,6 +80,17 @@ value_of_font_manager_id(FontManagerId id)
   }
 }
 
+value Val_Element_ref(GdomeElement* elem)
+{
+  if (elem != NULL)
+    {
+      GdomeException exc = 0;
+      gdome_el_ref(elem, &exc);
+      g_assert(exc == 0);
+    }
+  return Val_Element(elem);
+}
+
 ML_2 (gtk_math_view_new,GtkAdjustment_val, GtkAdjustment_val, Val_GtkWidget_sink)
 ML_1 (gtk_math_view_freeze, GtkMathView_val, Unit)
 ML_1 (gtk_math_view_thaw, GtkMathView_val, Unit)
@@ -85,6 +100,7 @@ ML_1 (gtk_math_view_unload, GtkMathView_val, Unit)
 ML_2 (gtk_math_view_select, GtkMathView_val, Element_val, Unit)
 ML_2 (gtk_math_view_unselect, GtkMathView_val, Element_val, Unit)
 ML_2 (gtk_math_view_is_selected, GtkMathView_val, Element_val, Val_bool)
+OML_3 (gtk_math_view_get_element_at, GtkMathView_val, Int_val, Int_val, Val_Element)
 ML_1 (gtk_math_view_get_width, GtkMathView_val, Val_int)
 ML_1 (gtk_math_view_get_height, GtkMathView_val, Val_int)
 ML_3 (gtk_math_view_set_top, GtkMathView_val, Int_val, Int_val, Unit)
@@ -93,6 +109,7 @@ ML_1 (gtk_math_view_get_hadjustment, GtkMathView_val, Val_GtkWidget)
 ML_1 (gtk_math_view_get_vadjustment, GtkMathView_val, Val_GtkWidget)
 ML_1 (gtk_math_view_get_buffer, GtkMathView_val, Val_GdkPixmap)
 ML_1 (gtk_math_view_get_frame, GtkMathView_val, Val_GtkWidget)
+ML_1 (gtk_math_view_get_drawing_area, GtkMathView_val, Val_GtkWidget)
 ML_2 (gtk_math_view_set_font_size, GtkMathView_val, Int_val, Unit)
 ML_1 (gtk_math_view_get_font_size, GtkMathView_val, Val_int)
 ML_2 (gtk_math_view_set_anti_aliasing, GtkMathView_val, Bool_val, Unit)
@@ -140,15 +157,30 @@ value ml_gtk_math_view_get_top (value arg1)
    gtk_math_view_get_top(GtkMathView_val (arg1), &x, &y);
    result = alloc(2, 0);
    Store_field(result, 0, Val_int(x));
-   Store_field(result, 0, Val_int(y));
+   Store_field(result, 1, Val_int(y));
    CAMLreturn (result);
 }
 
+/*
+value ml_gtk_math_view_get_element_coords (value arg1, value arg2)
+{
+  CAMLparam2(arg1, arg2);
+  CAMLlocal1 (result);
+  int x, y;
+  gtk_math_view_get_element_coords(GtkMathView_val (arg1), Element_val(arg2), &x, &y);
+  result = alloc(2, 0);
+  Store_field(result, 0, Val_int(x));
+  Store_field(result, 1, Val_int(y));
+  CAMLreturn (result);
+}
+*/
+
 value ml_gtk_math_view_gdome_element_of_boxed_option (value arg1)
 {
    CAMLparam1(arg1);
 
-   GdomeElement* nr;
+   GdomeException exc = 0;
+   GdomeElement* nr = NULL;
    CAMLlocal1 (res);
 
    if (arg1==Val_int(0)) {
@@ -156,7 +188,8 @@ value ml_gtk_math_view_gdome_element_of_boxed_option (value arg1)
    } else {
       nr = (GdomeElement*) Field(Field(arg1,0),1);
    }
-   res = Val_Element(nr);
+
+   res = Val_Element_ref(nr);
    if (res==Val_int(0)) {
       assert(0);
    }
@@ -175,8 +208,12 @@ value ml_gtk_math_view_gdome_element_option_of_boxed_option (value arg1)
    if (arg1==Val_int(0)) {
       res=Val_unit;
    } else {
-      res = Val_option_ptr((GdomeElement*) Field(Field(arg1,0),1),Val_Element);
+      GdomeException exc = 0;
+      GdomeElement* elem = (GdomeElement*) Field(Field(arg1,0),1);
+      assert(elem != NULL);
+      res = Val_option_ptr(elem, Val_Element_ref);
    }
 
    CAMLreturn(res);
 }
+