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datamodel/clipboardmanager.cpp

@@ -0,0 +1,169 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================
+
+#include "clipboardmanager.h"
+#include "datamodel.h"
+#include "tier1/KeyValues.h"
+
+#ifndef _LINUX
+#define USE_WINDOWS_CLIPBOARD
+#endif
+
+#if defined( USE_WINDOWS_CLIPBOARD )
+#include <windows.h>
+#endif
+
+CClipboardManager::CClipboardManager( ) :
+	m_pfnCleanup( NULL )
+{
+}
+
+CClipboardManager::~CClipboardManager()
+{
+	EmptyClipboard( false );
+}
+
+void CClipboardManager::EmptyClipboard( bool bClearWindowsClipboard )
+{
+	// Call optional cleanup function if there is one...
+	if ( m_pfnCleanup )
+	{
+		m_pfnCleanup->ReleaseClipboardData( m_Data );
+	}
+	int c = m_Data.Count();
+	for ( int i = 0; i < c; ++i )
+	{
+		m_Data[ i ]->deleteThis();
+	}
+	m_Data.RemoveAll();
+	m_pfnCleanup = NULL;
+
+#if defined( USE_WINDOWS_CLIPBOARD )
+	if ( bClearWindowsClipboard )
+	{
+		if ( ::OpenClipboard( ::GetDesktopWindow() ) )
+		{
+			::EmptyClipboard();
+			::CloseClipboard();
+		}
+	}
+#endif
+}
+
+void CClipboardManager::SetClipboardData( CUtlVector< KeyValues * >& data, IClipboardCleanup *pfnOptionalCleanuFunction )
+{
+	EmptyClipboard( true );
+	m_Data = data;
+	m_pfnCleanup = pfnOptionalCleanuFunction;
+
+#if defined( USE_WINDOWS_CLIPBOARD )
+	if ( m_Data.Count() >= 0 )
+	{
+		// Only stick the first item's data into the clipboard
+		char const *text = m_Data[ 0 ]->GetString( "text", "" );
+		if ( text && text[ 0 ] )
+		{
+			int textLen = Q_strlen( text );
+
+			if ( ::OpenClipboard( ::GetDesktopWindow() ) )
+			{
+				HANDLE hmem = ::GlobalAlloc(GMEM_MOVEABLE, textLen + 1);
+				if (hmem)
+				{
+					void *ptr = ::GlobalLock( hmem );
+					if ( ptr  )
+					{
+						Q_memset( ptr, 0, textLen + 1 );
+						Q_memcpy( ptr, text, textLen );
+						::GlobalUnlock( hmem );
+
+						::SetClipboardData( CF_TEXT, hmem );
+					}
+				}
+				::CloseClipboard();
+			}
+		}
+	}
+#endif
+}
+
+void CClipboardManager::AddToClipboardData( KeyValues *add )
+{
+	m_Data.AddToTail( add );
+#if defined( USE_WINDOWS_CLIPBOARD )
+	if ( m_Data.Count() >= 0 )
+	{
+		// Only stick the first item's data into the clipboard
+		char const *text = m_Data[ 0 ]->GetString( "text", "" );
+		if ( text && text[ 0 ] )
+		{
+			int textLen = Q_strlen( text );
+
+
+			if ( ::OpenClipboard( ::GetDesktopWindow() ) )
+			{
+				::EmptyClipboard();
+
+				HANDLE hmem = ::GlobalAlloc(GMEM_MOVEABLE, textLen + 1);
+				if (hmem)
+				{
+					void *ptr = ::GlobalLock( hmem );
+					if ( ptr  )
+					{
+						Q_memset( ptr, 0, textLen + 1 );
+						Q_memcpy( ptr, text, textLen );
+						::GlobalUnlock( hmem );
+
+						::SetClipboardData( CF_TEXT, hmem );
+					}
+				}
+				::CloseClipboard();
+			}
+		}
+	}
+#endif
+}
+
+void CClipboardManager::GetClipboardData( CUtlVector< KeyValues * >& data )
+{
+	data.RemoveAll();
+	data = m_Data;
+#if defined( USE_WINDOWS_CLIPBOARD )
+	if ( data.Count() == 0 )
+	{
+		// See if windows has some text since we didn't have any internally
+		if ( ::OpenClipboard( ::GetDesktopWindow() ) )
+		{
+			HANDLE hmem = ::GetClipboardData( CF_TEXT );
+			if ( hmem )
+			{
+				int len = GlobalSize( hmem );
+				if ( len > 0 )
+				{
+					void *ptr = GlobalLock(hmem);
+					if ( ptr )
+					{
+						char buf[ 8192 ];
+						len = min( len, 8191 );
+						Q_memcpy( buf, ( char * )ptr, len );
+						buf[ 8191 ] = 0;
+						GlobalUnlock(hmem);
+
+						KeyValues *newData = new KeyValues( "ClipBoard", "text", buf );
+						data.AddToTail( newData );
+					}
+				}
+			}
+			::CloseClipboard();
+		}
+	}
+#endif
+}
+
+bool CClipboardManager::HasClipboardData() const
+{
+	return m_Data.Count() > 0 ? true : false;
+}