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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef _HELPPOPUPWINDOW_HXX_
#define _HELPPOPUPWINDOW_HXX_
#include <sal/types.h>
#include <rtl/ustring.hxx>
#include <osl/mutex.hxx>
#define WIN32_LEAN_AND_MEAN
#if defined _MSC_VER
#pragma warning(push, 1)
#endif
#include <windows.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif
//---------------------------------------------
// declaration
//---------------------------------------------
/*
A simple popup window similary to the one the
windows help (using WinHelp) creates when called
with the option HELP_CONTEXTPOPUP.
The interface is very simple but necessary for our
needs.
The window automaticaly calculates the necessary
dimensions of the window and a appropriate show
position based on the position the client provides.
When the user click any mouse button or hits any key
the window closes itself and disappears.
*/
class CHelpPopupWindow
{
public:
/*
The client may set some parameter of the window.
When the client omits to set one or more values
a default value will be taken.
The values are in pixel.
*/
CHelpPopupWindow(
HINSTANCE hInstance,
HWND hwndParent );
/*
dtor
*/
~CHelpPopupWindow( );
/*
The client may set the text the window is showing
on next activation.
*/
void SAL_CALL setText( const OUString& aHelpText );
/*
Shows the window with the text that was last set.
The posistion is the preferred position. The window
may itself show at a slightly different position
if it fits not at the preferred position.
*/
void SAL_CALL show( sal_Int32 x, sal_Int32 y );
HWND SAL_CALL setParent( HWND hwndNewParent );
private:
void SAL_CALL onPaint( HWND, HDC );
void SAL_CALL onNcDestroy();
void SAL_CALL onCreate( HWND );
POINT SAL_CALL calcUpperLeftCorner( );
void SAL_CALL calcWindowRect( LPRECT lprect );
void SAL_CALL adjustWindowSize( sal_Int32*, sal_Int32* );
void SAL_CALL adjustWindowPos( sal_Int32 x, sal_Int32 y, sal_Int32 cx, sal_Int32 cy );
ATOM SAL_CALL RegisterWindowClass( );
void SAL_CALL UnregisterWindowClass( );
static LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
private:
sal_Int32 m_hMargins;
sal_Int32 m_vMargins;
sal_Int32 m_avCharWidth;
sal_Int32 m_avCharHeight;
HWND m_hwnd;
HWND m_hwndParent;
HINSTANCE m_hInstance;
sal_Bool m_bWndClassRegistered;
OUString m_HelpText;
HBITMAP m_hBitmapShadow;
HBRUSH m_hBrushShadow;
// the window class has to be registered only
// once per process, so multiple instance of this class
// share the registered window class
static ATOM s_ClassAtom;
static osl::Mutex s_Mutex;
static sal_Int32 s_RegisterWndClassCount;
// prevent copy and assignment
private:
CHelpPopupWindow( const CHelpPopupWindow& );
CHelpPopupWindow& operator=( const CHelpPopupWindow& );
};
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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