include/canvas/base/bitmapcanvasbase.hxx

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  19
  20 #ifndef INCLUDED_CANVAS_BASE_BITMAPCANVASBASE_HXX
  21 #define INCLUDED_CANVAS_BASE_BITMAPCANVASBASE_HXX
  22
  23 #include <canvas/base/canvasbase.hxx>
  24 #include <com/sun/star/rendering/XBitmapCanvas.hpp>
  25
  26 namespace canvas
  27 {
  28     /** Helper template to handle XBitmapCanvas method forwarding to
  29         BitmapCanvasHelper
  30
  31         Use this helper to handle the XBitmapCanvas part of your
  32         implementation.
  33
  34         @tpl Base
  35         Base class to use, most probably one of the
  36         WeakComponentImplHelperN templates with the appropriate
  37         interfaces. At least XBitmapCanvas should be among them (why
  38         else would you use this template, then?). Base class must have
  39         an Base( const Mutex& ) constructor (like the
  40         WeakComponentImplHelperN templates have).
  41
  42         @tpl CanvasHelper
  43         Canvas helper implementation for the backend in question
  44
  45         @tpl Mutex
  46         Lock strategy to use. Defaults to using the
  47         OBaseMutex-provided lock.  Every time one of the methods is
  48         entered, an object of type Mutex is created with m_aMutex as
  49         the sole parameter, and destroyed again when the method scope
  50         is left.
  51
  52         @tpl UnambiguousBase
  53         Optional unambiguous base class for XInterface of Base. It's
  54         sometimes necessary to specify this parameter, e.g. if Base
  55         derives from multiple UNO interface (were each provides its
  56         own version of XInterface, making the conversion ambiguous)
  57
  58         @see CanvasBase for further contractual requirements towards
  59         the CanvasHelper type, and some examples.
  60      */
  61     template< class Base,
  62               class CanvasHelper,
  63               class Mutex=::osl::MutexGuard,
  64               class UnambiguousBase=::com::sun::star::uno::XInterface > class BitmapCanvasBase :
  65         public CanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase >
  66     {
  67     public:
  68         typedef CanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase >    BaseType;
  69
  70         // XBitmap
  71         virtual ::com::sun::star::geometry::IntegerSize2D SAL_CALL getSize(  ) throw (::com::sun::star::uno::RuntimeException) SAL_OVERRIDE
  72         {
  73             typename BaseType::MutexType aGuard( BaseType::m_aMutex );
  74
  75             return BaseType::maCanvasHelper.getSize();
  76         }
  77
  78         virtual sal_Bool SAL_CALL hasAlpha(  ) throw (::com::sun::star::uno::RuntimeException) SAL_OVERRIDE
  79         {
  80             return sal_True;
  81         }
  82
  83         virtual ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > SAL_CALL getScaledBitmap( const ::com::sun::star::geometry::RealSize2D& newSize,
  84                                                                                                                    sal_Bool                                      beFast ) throw (css::uno::RuntimeException, std::exception) SAL_OVERRIDE
  85         {
  86             typename BaseType::MutexType aGuard( BaseType::m_aMutex );
  87
  88             return BaseType::maCanvasHelper.getScaledBitmap( newSize, beFast );
  89         }
  90
  91     };
  92
  93     template< class Base,
  94               class CanvasHelper,
  95               class Mutex=::osl::MutexGuard,
  96               class UnambiguousBase=::com::sun::star::uno::XInterface > class BitmapCanvasBase2 :
  97         public BitmapCanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase >
  98     {
  99         typedef BitmapCanvasBase< Base, CanvasHelper, Mutex, UnambiguousBase >
 100             BaseType;
 101
 102     public:
 103         // XBitmapCanvas
 104         virtual void SAL_CALL copyRect( const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmapCanvas >&   sourceCanvas,
 105                                         const ::com::sun::star::geometry::RealRectangle2D&                                      sourceRect,
 106                                         const ::com::sun::star::rendering::ViewState&                                           sourceViewState,
 107                                         const ::com::sun::star::rendering::RenderState&                                         sourceRenderState,
 108                                         const ::com::sun::star::geometry::RealRectangle2D&                                      destRect,
 109                                         const ::com::sun::star::rendering::ViewState&                                           destViewState,
 110                                         const ::com::sun::star::rendering::RenderState&                                         destRenderState ) throw (::com::sun::star::lang::IllegalArgumentException,
 111                                                                                                                                                          ::com::sun::star::uno::RuntimeException) SAL_OVERRIDE
 112         {
 113             tools::verifyArgs(sourceCanvas, sourceRect, sourceViewState, sourceRenderState,
 114                               destRect, destViewState, destRenderState,
 115                               BOOST_CURRENT_FUNCTION,
 116                               static_cast< typename BaseType::UnambiguousBaseType* >(this));
 117
 118             typename BaseType::BaseType::MutexType aGuard( BaseType::m_aMutex );
 119
 120             BaseType::BaseType::mbSurfaceDirty = true;
 121         }
 122     };
 123 }
 124
 125 #endif // INCLUDED_CANVAS_BASE_BITMAPCANVASBASE_HXX
 126
 127 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */