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tier2/keybindings.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//===========================================================================//
+
+#include "tier2/keybindings.h"
+#include "tier2/tier2.h"
+#include "inputsystem/iinputsystem.h"
+#include "tier1/utlbuffer.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+
+
+//-----------------------------------------------------------------------------
+// Set a key binding
+//-----------------------------------------------------------------------------
+void CKeyBindings::SetBinding( ButtonCode_t code, const char *pBinding )
+{
+	if ( code == BUTTON_CODE_INVALID || code == KEY_NONE )
+		return;
+
+	// free old bindings
+	if ( !m_KeyInfo[code].IsEmpty() )
+	{
+		// Exactly the same, don't re-bind and fragment memory
+		if ( !Q_stricmp( m_KeyInfo[code], pBinding ) )
+			return;
+	}
+			
+	// allocate memory for new binding
+	m_KeyInfo[code] = pBinding;
+}
+
+void CKeyBindings::SetBinding( const char *pButtonName, const char *pBinding )
+{
+	ButtonCode_t code = g_pInputSystem->StringToButtonCode( pButtonName );
+	SetBinding( code, pBinding );
+}
+
+void CKeyBindings::Unbind( ButtonCode_t code )
+{
+	if ( code != KEY_NONE && code != BUTTON_CODE_INVALID )
+	{
+		m_KeyInfo[code] = "";
+	}
+}
+
+void CKeyBindings::Unbind( const char *pButtonName )
+{
+	ButtonCode_t code = g_pInputSystem->StringToButtonCode( pButtonName );
+	Unbind( code );
+}
+
+void CKeyBindings::UnbindAll()
+{
+	for ( int i = 0; i < BUTTON_CODE_LAST; i++ )
+	{
+		m_KeyInfo[i] = "";
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Count number of lines of bindings we'll be writing
+//-----------------------------------------------------------------------------
+int CKeyBindings::GetBindingCount( ) const
+{
+	int	nCount = 0;
+	for ( int i = 0; i < BUTTON_CODE_LAST; i++ )
+	{
+		if ( !m_KeyInfo[i].IsEmpty() )
+		{
+			nCount++;
+		}
+	}
+
+	return nCount;
+}
+
+
+//-----------------------------------------------------------------------------
+// Writes lines containing "bind key value"
+//-----------------------------------------------------------------------------
+void CKeyBindings::WriteBindings( CUtlBuffer &buf )
+{
+	for ( int i = 0; i < BUTTON_CODE_LAST; i++ )
+	{
+		if ( !m_KeyInfo[i].IsEmpty() )
+		{
+			const char *pButtonCode = g_pInputSystem->ButtonCodeToString( (ButtonCode_t)i );
+			buf.Printf( "bind \"%s\" \"%s\"\n", pButtonCode, m_KeyInfo[i].Get() );
+		}
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+// Returns the keyname to which a binding string is bound.  E.g., if 
+// TAB is bound to +use then searching for +use will return "TAB"
+//-----------------------------------------------------------------------------
+const char *CKeyBindings::ButtonNameForBinding( const char *pBinding )
+{
+	const char *pBind = pBinding;
+	if ( pBinding[0] == '+' )
+	{
+		++pBind;
+	}
+
+	for ( int i = 0; i < BUTTON_CODE_LAST; i++ )
+	{
+		if ( m_KeyInfo[i].IsEmpty() )
+			continue;
+
+		if ( m_KeyInfo[i][0] == '+' )
+		{
+			if ( !Q_stricmp( &m_KeyInfo[i].Get()[1], pBind ) )
+				return g_pInputSystem->ButtonCodeToString( (ButtonCode_t)i );
+		}
+		else
+		{
+			if ( !Q_stricmp( m_KeyInfo[i], pBind ) )
+				return g_pInputSystem->ButtonCodeToString( (ButtonCode_t)i );
+		}
+	}
+
+	return NULL;
+}
+
+const char *CKeyBindings::GetBindingForButton( ButtonCode_t code )
+{
+	if ( m_KeyInfo[code].IsEmpty() )
+		return NULL;
+
+	return m_KeyInfo[ code ];
+}
+
+
+