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utils/vmpi/vmpi_service_ui/shell_icon_mgr.cpp

@@ -0,0 +1,187 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "stdafx.h"
+#include "shell_icon_mgr.h"
+#include "tier1/strtools.h"
+#include "tier0/dbg.h"
+#include "shellapi.h"
+
+
+#define SHELLICONMGR_CLASSNAME	"VMPI_ShellIconMgr"
+
+
+
+CShellIconMgr::CShellIconMgr()
+{
+	m_hWnd = NULL;
+	m_hWndClass = NULL;
+	m_uTaskbarRestart = (UINT)-1;
+	m_iCurIconResourceID = 0;
+	m_pHelper = NULL;
+}
+
+
+CShellIconMgr::~CShellIconMgr()
+{
+	Term();
+}
+
+
+bool CShellIconMgr::Init( 
+	IShellIconMgrHelper *pHelper, 
+	const char *pToolTip, 
+	int iCallbackMessage, 
+	int iIconResourceID )
+{
+	Term();
+
+	m_pHelper = pHelper;
+	m_iCallbackMessage = iCallbackMessage;
+	m_pToolTip = pToolTip;
+	
+	// Create the window class.
+	WNDCLASS wndclass;
+	memset( &wndclass, 0, sizeof( wndclass ) );
+	wndclass.lpfnWndProc = &CShellIconMgr::StaticWindowProc;
+	wndclass.hInstance = (HINSTANCE)pHelper->GetHInstance();
+	wndclass.hIcon = NULL;
+	wndclass.hCursor = LoadCursor( NULL, IDC_ARROW );
+	wndclass.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH );
+	wndclass.lpszMenuName = NULL;
+	wndclass.lpszClassName = SHELLICONMGR_CLASSNAME;
+	m_hWndClass = RegisterClass( &wndclass );
+	if ( !m_hWndClass )
+	{
+		Assert( false );
+		Warning( "RegisterClass failed.\n" );
+		Term();
+		return false;
+	}
+
+
+	// Create the window.
+	m_hWnd = CreateWindow(
+		SHELLICONMGR_CLASSNAME,
+		SHELLICONMGR_CLASSNAME,
+		WS_DISABLED,	// we only want shell notify messages
+		0, 0, 0, 0,		// position
+		NULL,			// parent
+		NULL,			// menu
+		pHelper->GetHInstance(),	// hInstance
+		this			// lpParam
+		);
+	if ( !m_hWnd )
+	{
+		Assert( false );
+		Warning( "CreateWindow failed.\n" );
+		Term();
+		return false;
+	}
+
+	m_uTaskbarRestart = RegisterWindowMessage( TEXT( "TaskbarCreated" ) );
+	SetWindowLong( m_hWnd, GWL_USERDATA, (LONG)this );
+	UpdateWindow( m_hWnd );
+
+	// Don't handle errors here because the taskbar may not be created yet if we are a service.
+	m_iCurIconResourceID = iIconResourceID;
+	CreateTrayIcon();
+	return true;
+}
+
+
+void CShellIconMgr::Term()
+{
+	if ( m_hWndClass )
+	{
+		UnregisterClass( SHELLICONMGR_CLASSNAME, m_pHelper->GetHInstance() );
+		m_hWndClass = NULL;
+	}
+
+	if ( m_hWnd )
+	{
+		// Remove the shell icon if there is one.
+		NOTIFYICONDATA data;
+		memset( &data, 0, sizeof( data ) );
+		data.cbSize = sizeof( data );
+		data.hWnd = m_hWnd;
+		Shell_NotifyIcon( NIM_DELETE, &data );
+		
+		DestroyWindow( m_hWnd );
+		m_hWnd = NULL;
+	}
+}
+
+
+void CShellIconMgr::ChangeIcon( int iIconResourceID )
+{
+	NOTIFYICONDATA data;
+	
+	memset( &data, 0, sizeof( data ) );
+	data.cbSize = sizeof( data );
+	data.uFlags = NIF_ICON;
+	data.hWnd = m_hWnd;
+	data.hIcon = LoadIcon( m_pHelper->GetHInstance(), MAKEINTRESOURCE( iIconResourceID ) );
+	
+	Shell_NotifyIcon( NIM_MODIFY, &data );
+	
+	m_iCurIconResourceID = iIconResourceID;
+}
+
+
+void CShellIconMgr::CreateTrayIcon()
+{
+	// Now create the shell icon.
+	NOTIFYICONDATA data;
+	
+	memset( &data, 0, sizeof( data ) );
+	data.cbSize = sizeof( data );
+	data.uFlags = NIF_ICON | NIF_TIP | NIF_MESSAGE;
+	data.uCallbackMessage = m_iCallbackMessage;
+	data.hWnd = m_hWnd;
+	data.hIcon = LoadIcon( m_pHelper->GetHInstance(), MAKEINTRESOURCE( m_iCurIconResourceID ) );
+	Q_strncpy( data.szTip, m_pToolTip, sizeof( data.szTip ) );
+
+	Shell_NotifyIcon( NIM_ADD, &data );
+}
+
+
+LRESULT CShellIconMgr::WindowProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam )
+{
+	if ( hWnd != m_hWnd )
+	{
+		return DefWindowProc( hWnd, uMsg, wParam, lParam );
+	}
+
+	if ( uMsg == m_uTaskbarRestart )
+	{
+		CreateTrayIcon();
+		return 0;
+	}
+
+	return m_pHelper->WindowProc( hWnd, uMsg, wParam, lParam );
+}
+
+
+LRESULT CShellIconMgr::StaticWindowProc(
+	HWND hwnd,      // handle to window
+	UINT uMsg,      // message identifier
+	WPARAM wParam,  // first message parameter
+	LPARAM lParam   // second message parameter
+	)
+{
+	CShellIconMgr *pMgr = (CShellIconMgr*)GetWindowLong( hwnd, GWL_USERDATA );
+	if ( pMgr )
+	{
+		return pMgr->WindowProc( hwnd, uMsg, wParam, lParam );
+	}
+	else
+	{
+		return DefWindowProc( hwnd, uMsg, wParam, lParam );
+	}
+}
+