kwin/clients/oxygen/oxygenshadowcache.h
Hugo Pereira Da Costa 9eec5543bf Moved all shadow handling into global cache oxygenShadowCache. This allows to share same
shadow tilesets between clients, thus reducing the memory usage; to simplify the oxygenclient
class; and leave room for optimizing active/inactive shadow transitions. The global class is
declared using K_GLOBAL_STATIC_WITH_ARGS.

Also cleaned-up unnecessary headers.


svn path=/trunk/KDE/kdebase/workspace/; revision=1025063
2009-09-17 22:40:06 +00:00

137 lines
3.8 KiB
C++

#ifndef oxygenshadowcache_h
#define oxygenshadowcache_h
//////////////////////////////////////////////////////////////////////////////
// oxygenshadowcache.h
// handles caching of TileSet objects to draw shadows
// -------------------
//
// Copyright (c) 2009 Hugo Pereira Da Costa <hugo.pereira@free.fr>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.
//////////////////////////////////////////////////////////////////////////////
#include <QCache>
#include "oxygenshadowconfiguration.h"
#include "lib/tileset.h"
namespace Oxygen
{
class OxygenClient;
class OxygenShadowCache
{
public:
//! constructor
OxygenShadowCache( int maxIndex );
//! destructor
virtual ~OxygenShadowCache( void )
{}
//! invalidate caches
void invalidateCaches( void )
{
shadowCache_.clear();
}
//! returns true if provided shadow configuration changes with respect to stored
/*!
use OxygenShadowConfiguration::colorRole() to decide whether it should be stored
as active or inactive
*/
bool shadowConfigurationChanged( const OxygenShadowConfiguration& ) const;
//! set shadowConfiguration
/*!
use OxygenShadowConfiguration::colorRole() to decide whether it should be stored
as active or inactive
*/
void setShadowConfiguration( const OxygenShadowConfiguration& );
//! shadow size
qreal shadowSize( void ) const
{ return qMax( activeShadowConfiguration_.shadowSize(), inactiveShadowConfiguration_.shadowSize() ); }
//! get shadow matching client
TileSet* tileSet( const OxygenClient* );
//! get shadow matching client and animation index
TileSet* tileSet( const OxygenClient*, int );
//! Key class to be used into QCache
class Key
{
public:
//! explicit constructor
explicit Key( void ):
active(false),
useOxygenShadows(false),
isShade(false),
hasNoBorder(false),
hasTitleOutline(false)
{}
//! hash function
int hash( void ) const;
bool active;
bool useOxygenShadows;
bool isShade;
bool hasNoBorder;
bool hasTitleOutline;
};
private:
//! complex pixmap (when needed)
QPixmap shadowPixmap( const OxygenClient*, bool active ) const;
//! simple pixmap
QPixmap simpleShadowPixmap( const QColor&, const OxygenClient*, bool active ) const;
private:
//! max index
/*! it is used to set caches max cost, and calculate animation opacity */
int maxIndex_;
//! shadow configuration
OxygenShadowConfiguration activeShadowConfiguration_;
//! shadow configuration
OxygenShadowConfiguration inactiveShadowConfiguration_;
//! cache
typedef QCache<int, TileSet> TileSetCache;
//! active shadow cache
TileSetCache shadowCache_;
};
}
#endif