xref: /aoo42x/main/canvas/inc/canvas/base/graphicdevicebase.hxx (revision 07a3d7f1)

/**************************************************************
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/



#ifndef INCLUDED_CANVAS_GRAPHICDEVICEBASE_HXX
#define INCLUDED_CANVAS_GRAPHICDEVICEBASE_HXX

#include <rtl/ref.hxx>
#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/util/XUpdatable.hpp>
#include <com/sun/star/rendering/XGraphicDevice.hpp>
#include <com/sun/star/rendering/XColorSpace.hpp>

#include <canvas/parametricpolypolygon.hxx>
#include <canvas/propertysethelper.hxx>


/* Definition of GraphicDeviceBase class */

namespace canvas
{
    /** Helper template base class for XGraphicDevice implementations.

    	This base class provides partial implementations of the
    	XGraphicDevice-related interface, such as XColorSpace.

        This template basically interposes itself between the full
        interface you implement (i.e. not restricted to XGraphicDevice
        etc.). The problem with UNO partial interface implementation
        actually is, that you cannot do it the plain way, since
        deriving from a common base subclass always introduces the
        whole set of pure virtuals, that your baseclass helper just
        overrided) and your implementation class. You then only have
        to implement the functionality <em>besides</em>
        XGraphicDevice. If you want to support the optional debug
        XUpdatable interface, also add that to the base classes
        (client code will call the corresponding update() method,
        whenever a burst of animations is over).

        <pre>
        Example:
        typedef ::cppu::WeakComponentImplHelper5< ::com::sun::star::rendering::XGraphicDevice,
        										  ::com::sun::star::rendering::XColorSpace,
        										  ::com::sun::star::rendering::XPropertySet,
                                                  ::com::sun::star::lang::XServiceInfo,
                                                  ::com::sun::star::lang::XServiceName > GraphicDeviceBase_Base;
	    typedef ::canvas::internal::GraphicDeviceBase< GraphicDeviceBase, DeviceHelper > ExampleDevice_Base;

	    class ExampleDevice : public ExampleDevice_Base
		{
		};
        </pre>

        @tpl Base
        Base class to use, most probably one of the
        WeakComponentImplHelperN templates with the appropriate
        interfaces. At least XGraphicDevice should be among them (why else
        would you use this template, then?). Base class must have an
        Base( const Mutex& ) constructor (like the
        WeakComponentImplHelperN templates have). As the very least,
        the base class must be derived from uno::XInterface, as some
        error reporting mechanisms rely on that.

        @tpl DeviceHelper
        Device helper implementation for the backend in question. This
        object will be held as a member of this template class, and
        basically gets forwarded all XGraphicDevice API calls that
        could not be handled generically.

        @tpl Mutex
        Lock strategy to use. Defaults to using the
        BaseMutexHelper-provided lock.  Every time one of the methods is
        entered, an object of type Mutex is created with m_aMutex as
        the sole parameter, and destroyed again when the method scope
        is left.

        @tpl UnambiguousBase
        Optional unambiguous base class for XInterface of Base. It's
        sometimes necessary to specify this parameter, e.g. if Base
        derives from multiple UNO interface (were each provides its
        own version of XInterface, making the conversion ambiguous)
     */
    template< class Base,
              class DeviceHelper,
              class Mutex=::osl::MutexGuard,
              class UnambiguousBase=::com::sun::star::uno::XInterface > class GraphicDeviceBase :
        public Base
    {
    public:
        typedef Base 			  BaseType;
        typedef DeviceHelper	  DeviceHelperType;
        typedef Mutex			  MutexType;
        typedef UnambiguousBase	  UnambiguousBaseType;
        typedef GraphicDeviceBase ThisType;

        typedef ::rtl::Reference< GraphicDeviceBase > Reference;

        GraphicDeviceBase() :
            maDeviceHelper(),
            maPropHelper(),
            mbDumpScreenContent(false)
        {
            maPropHelper.initProperties( PropertySetHelper::MakeMap
                                         ("HardwareAcceleration",
                                          boost::bind(&DeviceHelper::isAccelerated,
                                                      boost::ref(maDeviceHelper)))
                                         ("DeviceHandle",
                                          boost::bind(&DeviceHelper::getDeviceHandle,
                                                      boost::ref(maDeviceHelper)))
                                         ("SurfaceHandle",
                                          boost::bind(&DeviceHelper::getSurfaceHandle,
                                                      boost::ref(maDeviceHelper)))
                                         ("DumpScreenContent",
                                          boost::bind(&ThisType::getDumpScreenContent,
                                                      this),
                                          boost::bind(&ThisType::setDumpScreenContent,
                                                      this,
                                                      _1)));
        }

#if defined __SUNPRO_CC
        using Base::disposing;
#endif
        virtual void SAL_CALL disposing()
        {
            MutexType aGuard( BaseType::m_aMutex );

            maDeviceHelper.disposing();

            // pass on to base class
            cppu::WeakComponentImplHelperBase::disposing();
        }

        // XGraphicDevice
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBufferController > SAL_CALL getBufferController(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            return ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBufferController >();
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XColorSpace > SAL_CALL getDeviceColorSpace(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.getColorSpace();
        }

        virtual ::com::sun::star::geometry::RealSize2D SAL_CALL getPhysicalResolution(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.getPhysicalResolution();
        }

        virtual ::com::sun::star::geometry::RealSize2D SAL_CALL getPhysicalSize(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.getPhysicalSize();
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XLinePolyPolygon2D > SAL_CALL createCompatibleLinePolyPolygon( const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealPoint2D > >& points ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createCompatibleLinePolyPolygon( this, points );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBezierPolyPolygon2D > SAL_CALL createCompatibleBezierPolyPolygon( const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealBezierSegment2D > >& points ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createCompatibleBezierPolyPolygon( this, points );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > SAL_CALL createCompatibleBitmap( const ::com::sun::star::geometry::IntegerSize2D& size ) throw (::com::sun::star::lang::IllegalArgumentException,
                                                                                                                                                                                         ::com::sun::star::uno::RuntimeException)
        {
            tools::verifyBitmapSize(size,
                                    BOOST_CURRENT_FUNCTION,
                                    static_cast< UnambiguousBaseType* >(this));

            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createCompatibleBitmap( this, size );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > SAL_CALL createVolatileBitmap( const ::com::sun::star::geometry::IntegerSize2D& size ) throw (::com::sun::star::lang::IllegalArgumentException,
                                                                                                                                                                                               ::com::sun::star::uno::RuntimeException)
        {
            tools::verifyBitmapSize(size,
                                    BOOST_CURRENT_FUNCTION,
                                    static_cast< UnambiguousBaseType* >(this));

            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createVolatileBitmap( this, size );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > SAL_CALL createCompatibleAlphaBitmap( const ::com::sun::star::geometry::IntegerSize2D& size ) throw (::com::sun::star::lang::IllegalArgumentException,
                                                                                                                                                                                              ::com::sun::star::uno::RuntimeException)
        {
            tools::verifyBitmapSize(size,
                                    BOOST_CURRENT_FUNCTION,
                                    static_cast< UnambiguousBaseType* >(this));

            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createCompatibleAlphaBitmap( this, size );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > SAL_CALL createVolatileAlphaBitmap( const ::com::sun::star::geometry::IntegerSize2D& size ) throw (::com::sun::star::lang::IllegalArgumentException,
                                                                                                                                                                                                    ::com::sun::star::uno::RuntimeException)
        {
            tools::verifyBitmapSize(size,
                                    BOOST_CURRENT_FUNCTION,
                                    static_cast< UnambiguousBaseType* >(this));

            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.createVolatileAlphaBitmap( this, size );
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory > SAL_CALL getParametricPolyPolygonFactory(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            return this;
        }

        virtual ::sal_Bool SAL_CALL hasFullScreenMode(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.hasFullScreenMode();
        }

        virtual ::sal_Bool SAL_CALL enterFullScreenMode( ::sal_Bool bEnter ) throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            return maDeviceHelper.enterFullScreenMode( bEnter );
        }

        // XMultiServiceFactory
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > SAL_CALL createInstance( const ::rtl::OUString& aServiceSpecifier ) throw (::com::sun::star::uno::Exception, ::com::sun::star::uno::RuntimeException)
        {
            return ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XParametricPolyPolygon2D >(
                ParametricPolyPolygon::create(this,
                                              aServiceSpecifier,
                                              ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any >()));
        }

        virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > SAL_CALL createInstanceWithArguments( const ::rtl::OUString& aServiceSpecifier, const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Any >& Arguments ) throw (::com::sun::star::uno::Exception, ::com::sun::star::uno::RuntimeException)
        {
            return ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XParametricPolyPolygon2D >(
                ParametricPolyPolygon::create(this,
                                              aServiceSpecifier,
                                              Arguments));
        }

        virtual ::com::sun::star::uno::Sequence< ::rtl::OUString > SAL_CALL getAvailableServiceNames(  ) throw (::com::sun::star::uno::RuntimeException)
        {
            return ParametricPolyPolygon::getAvailableServiceNames();
        }


        // XUpdatable
        virtual void SAL_CALL update() throw (com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );

            if( mbDumpScreenContent )
                maDeviceHelper.dumpScreenContent();
        }


        // XPropertySet
        virtual ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertySetInfo > SAL_CALL getPropertySetInfo() throw (::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            return maPropHelper.getPropertySetInfo();
        }

        virtual void SAL_CALL setPropertyValue( const ::rtl::OUString&            aPropertyName,
                                                const ::com::sun::star::uno::Any& aValue ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                  ::com::sun::star::beans::PropertyVetoException,
                                                                                                  ::com::sun::star::lang::IllegalArgumentException,
                                                                                                  ::com::sun::star::lang::WrappedTargetException,
                                                                                                  ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            maPropHelper.setPropertyValue( aPropertyName, aValue );
        }

        virtual ::com::sun::star::uno::Any SAL_CALL getPropertyValue( const ::rtl::OUString& aPropertyName ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                                    ::com::sun::star::lang::WrappedTargetException,
                                                                                                                    ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            return maPropHelper.getPropertyValue( aPropertyName );
        }

        virtual void SAL_CALL addPropertyChangeListener( const ::rtl::OUString& aPropertyName,
                                                         const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& xListener ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                                                                                        ::com::sun::star::lang::WrappedTargetException,
                                                                                                                                                                        ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            maPropHelper.addPropertyChangeListener( aPropertyName,
                                                    xListener );
        }

        virtual void SAL_CALL removePropertyChangeListener( const ::rtl::OUString& aPropertyName,
                                                            const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XPropertyChangeListener >& xListener ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                                                                                           ::com::sun::star::lang::WrappedTargetException,
                                                                                                                                                                           ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            maPropHelper.removePropertyChangeListener( aPropertyName,
                                                       xListener );
        }

        virtual void SAL_CALL addVetoableChangeListener( const ::rtl::OUString& aPropertyName,
                                                         const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XVetoableChangeListener >& xListener ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                                                                                        ::com::sun::star::lang::WrappedTargetException,
                                                                                                                                                                        ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            maPropHelper.addVetoableChangeListener( aPropertyName,
                                                    xListener );
        }

        virtual void SAL_CALL removeVetoableChangeListener( const ::rtl::OUString& aPropertyName,
                                                            const ::com::sun::star::uno::Reference< ::com::sun::star::beans::XVetoableChangeListener >& xListener ) throw (::com::sun::star::beans::UnknownPropertyException,
                                                                                                                                                                           ::com::sun::star::lang::WrappedTargetException,
                                                                                                                                                                           ::com::sun::star::uno::RuntimeException)
        {
            MutexType aGuard( BaseType::m_aMutex );
            maPropHelper.removeVetoableChangeListener( aPropertyName,
                                                       xListener );
        }

    protected:
        ~GraphicDeviceBase() {} // we're a ref-counted UNO class. _We_ destroy ourselves.

        ::com::sun::star::uno::Any getDumpScreenContent() const
        {
            return ::com::sun::star::uno::makeAny( mbDumpScreenContent );
        }

        void setDumpScreenContent( const ::com::sun::star::uno::Any& rAny )
        {
            // TODO(Q1): this was mbDumpScreenContent =
            // rAny.get<bool>(), only that gcc3.3 wouldn't eat it
            rAny >>= mbDumpScreenContent;
        }

        DeviceHelperType  maDeviceHelper;
        PropertySetHelper maPropHelper;
        bool              mbDumpScreenContent;

    private:
        GraphicDeviceBase( const GraphicDeviceBase& );
        GraphicDeviceBase& operator=( const GraphicDeviceBase& );
    };
}

#endif /* INCLUDED_CANVAS_GRAPHICDEVICEBASE_HXX */