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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef SD_SLIDESORTER_VIEW_FONT_PROVIDER_HXX
#define SD_SLIDESORTER_VIEW_FONT_PROVIDER_HXX
#include "tools/SdGlobalResourceContainer.hxx"
#include <boost/shared_ptr.hpp>
#include <vcl/mapmod.hxx>
class Font;
class OutputDevice;
class VclWindowEvent;
namespace sd { namespace slidesorter { namespace view {
/** This simple singleton class provides fonts that are scaled so that they
have a fixed height on the given device regardless of its map mode.
*/
class FontProvider
: public SdGlobalResource
{
public:
typedef ::boost::shared_ptr<Font> SharedFontPointer;
/** Return the single instance of this class. Throws a RuntimeException
when no instance can be created.
*/
static FontProvider& Instance (void);
/** Return a font that is scaled according to the current map mode of
the given device. Repeated calls with a device, not necessarily the
same device, with the same map mode will return the same font. The
first call with a different map mode will release the old font and
create a new one that is correctly scaled.
*/
SharedFontPointer GetFont (const OutputDevice& rDevice);
/** Call this method to tell an object to release its currently used
font. The next call to GetFont() will then create a new one.
Typically called after a DataChange event when for instance a system
font has been modified.
*/
void Invalidate (void);
private:
static FontProvider* mpInstance;
/** The font that was created by a previous call to GetFont(). It is
replaced by another one only when GetFont() is called with a device
with a different map mode or by a call to Invalidate().
*/
SharedFontPointer maFont;
/** The mape mode for which maFont was created.
*/
MapMode maMapMode;
FontProvider (void);
virtual ~FontProvider (void);
// Copy constructor is not implemented.
FontProvider (const FontProvider&);
// Assignment operator is not implemented.
FontProvider& operator= (const FontProvider&);
};
} } } // end of namespace ::sd::slidesorter::view
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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