Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 151 insertions, 0 deletions

diff --git a/src/Fl_Menu_add.cxx b/src/Fl_Menu_add.cxx
new file mode 100644
index 000000000..1aee7517a
--- /dev/null
+++ b/src/Fl_Menu_add.cxx
@@ -0,0 +1,151 @@
+// Fl_Menu_add.C
+
+// Methods to alter the menu in an Fl_Menu_ widget.
+// This code is seperated so that it is not linked in if not used.
+
+// These functions are for emulation of Forms and for dynamically
+// changing the menus.  They are in this source file so they are
+// not linked in if not used, which is what will happen if the
+// the program only uses constant menu tables.
+
+// Not at all guaranteed to be Forms compatable, especially with any
+// string with a % sign in it!
+
+#include <FL/Fl_Menu_.H>
+#include <string.h>
+#include <stdlib.h>
+
+int fl_old_shortcut(const char* s) {
+  if (!s || !*s) return 0;
+  int n = 0;
+  if (*s == '#') {n |= FL_ALT; s++;}
+  if (*s == '+') {n |= FL_SHIFT; s++;}
+  if (*s == '^') {n |= FL_CTRL; s++;}
+  return n | *s;
+}
+
+int Fl_Menu_Item::add(
+  const char *text,
+  int shortcut,
+  Fl_Callback *cb,	
+  void *data,
+  int flags)
+{
+  Fl_Menu_Item *m;
+  const char *p;
+  char *q;
+  char buf[1024];
+
+  int size = this->size();
+  int flags1 = 0;
+  char* item;
+
+  m = this;
+
+  for (;;) {    /* do all the supermenus: */
+
+    /* fill in the buf with name, changing \x to x: */
+    q = buf;
+    for (p=text; *p && *p != '/'; *q++ = *p++) if (*p=='\\') p++;
+    *q = 0;
+
+    item = buf;
+    if (*item == '_') {item++; flags1 = FL_MENU_DIVIDER;}
+    if (*p != '/') break; /* not a menu title */
+    text = p+1;	/* point at item title */
+
+    /* find a matching menu title: */
+    for (; m->text; m = m->next())
+      if (m->flags&FL_SUBMENU && !strcmp(item,m->text)) break;
+
+    if (!m->text) { /* create a new menu */
+      memmove(m+2,m,sizeof(Fl_Menu_Item)*(this+size-m));
+      m->text = strdup(item);
+      m->shortcut_ = 0;
+      m->callback_ = 0;
+      m->user_data_ = 0;
+      m->flags = FL_SUBMENU|flags1;
+      m->labeltype_ = m->labelfont_ = m->labelsize_ = m->labelcolor_ = 0;
+      (m+1)->text = 0;
+      size += 2;
+    }
+    m++;	/* go into the menu */
+    flags1 = 0;
+  }
+
+  /* find a matching menu item: */
+  for (; m->text; m = m->next())
+    if (!strcmp(m->text,item)) break;
+
+  if (!m->text) {	/* add a new menu item */
+    memmove(m+1,m,sizeof(Fl_Menu_Item)*(this+size-m));
+    size++;
+    m->text = strdup(item);
+  }
+
+  /* fill it in */
+  m->shortcut_ = shortcut;
+  m->callback_ = cb;
+  m->user_data_ = data;
+  m->flags = flags|flags1;
+  m->labeltype_ = m->labelfont_ = m->labelsize_ = m->labelcolor_ = 0;
+
+  return m-this;
+}
+
+// this is really lame, it will crash if this many items are added:
+#define FL_MENU_MAXITEMS	128
+
+int Fl_Menu_::add(const char *t, int s, Fl_Callback *c,void *v,int f) {
+  if (!menu_) {
+    value_ = menu_ = new Fl_Menu_Item[FL_MENU_MAXITEMS+1];
+    alloc = 1;
+    menu_[0].text = 0;
+  }
+  return menu_->add(t,s,c,v,f);
+}
+
+int Fl_Menu_::add(const char *str) {
+  char buf[128];
+  int r = 0;
+  while (*str) {
+    int shortcut = 0;
+    char *c;
+    for (c = buf; *str && *str != '|'; str++) {
+      if (*str == '\t') {*c++ = 0; shortcut = fl_old_shortcut(str);}
+      else *c++ = *str;
+    }
+    *c = 0;
+    r = add(buf, shortcut, 0, 0, 0);
+    if (*str) str++;
+  }
+  return r;
+}
+
+void Fl_Menu_::replace(int i, const char *str) {
+  if (i<0 || i>=size()) return;
+  if (alloc) free((void *)menu_[i].text);
+  menu_[i].text = strdup(str);
+}
+
+void Fl_Menu_::remove(int i) {
+  int n = size();
+  if (i<0 || i>=n) return;
+  if (alloc) free((void *)menu_[i].text);
+  memmove(&menu_[i],&menu_[i+1],(n-i)*sizeof(Fl_Menu_Item));
+}
+
+void Fl_Menu_::clear() {
+  for (int i = size(); i--;)
+    if (menu_[i].text) free((void*)menu_[i].text);
+  if (alloc) {
+    delete[] menu_;
+    menu_ = 0;
+    alloc = 0;
+  } else if (menu_) {
+    menu_[0].text = 0;
+    value_ = menu_;
+  }
+}
+
+// end of Fl_Menu_.C