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buttonHandle.I
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218 lines (199 loc) · 8.1 KB
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// Filename: buttonHandle.I
// Created by: drose (01Mar00)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) Carnegie Mellon University. All rights reserved.
//
// All use of this software is subject to the terms of the revised BSD
// license. You should have received a copy of this license along
// with this source code in a file named "LICENSE."
//
////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Constructor
// Access: Published
// Description: The default constructor must do nothing, because we
// can't guarantee ordering of static initializers. If
// the constructor tried to initialize its value, it
// might happen after the value had already been set
// previously by another static initializer!
////////////////////////////////////////////////////////////////////
INLINE ButtonHandle::
ButtonHandle() {
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Constructor
// Access: Published
// Description: Constructs a ButtonHandle with the corresponding
// index number, which may have been returned by an
// earlier call to ButtonHandle::get_index().
////////////////////////////////////////////////////////////////////
INLINE ButtonHandle::
ButtonHandle(int index) : _index(index) {
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Copy Constructor
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE ButtonHandle::
ButtonHandle(const ButtonHandle ©) : _index(copy._index) {
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Equality Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator == (const ButtonHandle &other) const {
return (_index == other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Inequality Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator != (const ButtonHandle &other) const {
return (_index != other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Ordering Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator < (const ButtonHandle &other) const {
return (_index < other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Ordering Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator <= (const ButtonHandle &other) const {
return (_index <= other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Ordering Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator > (const ButtonHandle &other) const {
return (_index > other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::Ordering Operator
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
operator >= (const ButtonHandle &other) const {
return (_index >= other._index);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::compare_to
// Access: Published
// Description: Sorts ButtonHandles arbitrarily (according to <, >,
// etc.). Returns a number less than 0 if this type
// sorts before the other one, greater than zero if it
// sorts after, 0 if they are equivalent.
////////////////////////////////////////////////////////////////////
INLINE int ButtonHandle::
compare_to(const ButtonHandle &other) const {
return _index - other._index;
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::get_hash
// Access: Published
// Description: Returns a hash code suitable for phash_map.
////////////////////////////////////////////////////////////////////
INLINE size_t ButtonHandle::
get_hash() const {
return (size_t)_index;
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::has_ascii_equivalent
// Access: Published
// Description: Returns true if the button was created with an ASCII
// equivalent code (e.g. for a standard keyboard
// button).
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
has_ascii_equivalent() const {
return (_index > 0 && _index < 128);
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::get_ascii_equivalent
// Access: Published
// Description: Returns the character code associated with the
// button, or '\0' if no ASCII code was associated.
////////////////////////////////////////////////////////////////////
INLINE char ButtonHandle::
get_ascii_equivalent() const {
return has_ascii_equivalent() ? (char)_index : '\0';
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::matches
// Access: Published
// Description: Returns true if this ButtonHandle is the same as the
// other one, or if the other one is an alias for this
// one. (Does not return true if this button is an
// alias for the other one, however.)
//
// This is a more general comparison than operator ==.
////////////////////////////////////////////////////////////////////
INLINE bool ButtonHandle::
matches(const ButtonHandle &other) const {
return ((*this) == other ||
(other != ButtonHandle::none() &&
get_alias() == other));
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::get_index
// Access: Published
// Description: Returns the integer index associated with this
// ButtonHandle. Each different ButtonHandle will have a
// different index. However, you probably shouldn't be
// using this method; you should just treat the
// ButtonHandles as opaque classes. This is provided
// for the convenience of non-C++ scripting languages to
// build a hashtable of ButtonHandles.
////////////////////////////////////////////////////////////////////
INLINE int ButtonHandle::
get_index() const {
return _index;
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::output
// Access: Published
// Description:
////////////////////////////////////////////////////////////////////
INLINE void ButtonHandle::
output(ostream &out) const {
out << get_name();
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::none
// Access: Published, Static
// Description: Returns a special zero-valued ButtonHandle that is
// used to indicate no button.
////////////////////////////////////////////////////////////////////
INLINE ButtonHandle ButtonHandle::
none() {
return _none;
}
////////////////////////////////////////////////////////////////////
// Function: ButtonHandle::operator bool
// Access: Published
// Description: ButtonHandle::none() evaluates to false, everything
// else evaluates to true.
////////////////////////////////////////////////////////////////////
INLINE ButtonHandle::
operator bool () const {
return (_index != 0);
}