LibreOffice Module canvas (master)  1
cairo_cachedbitmap.cxx
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19 
20 #include <sal/config.h>
21 
22 #include <com/sun/star/rendering/XCanvas.hpp>
23 #include <com/sun/star/rendering/RepaintResult.hpp>
24 #include <utility>
25 #include <tools/diagnose_ex.h>
26 
27 #include "cairo_cachedbitmap.hxx"
28 #include "cairo_repainttarget.hxx"
29 
30 
31 using namespace ::cairo;
32 using namespace ::com::sun::star;
33 
34 namespace cairocanvas
35 {
37  const rendering::ViewState& rUsedViewState,
38  rendering::RenderState aUsedRenderState,
39  const uno::Reference< rendering::XCanvas >& rTarget ) :
40  CachedPrimitiveBase( rUsedViewState, rTarget ),
41  mpSurface(std::move( pSurface )),
42  maRenderState(std::move( aUsedRenderState ))
43  {}
44 
45  void SAL_CALL CachedBitmap::disposing()
46  {
47  ::osl::MutexGuard aGuard( m_aMutex );
48 
49  mpSurface.reset();
50  CachedPrimitiveBase::disposing();
51  }
52 
53  ::sal_Int8 CachedBitmap::doRedraw( const rendering::ViewState& rNewState,
54  const rendering::ViewState& /*rOldState*/,
55  const uno::Reference< rendering::XCanvas >& rTargetCanvas,
56  bool bSameViewTransform )
57  {
58  ENSURE_OR_THROW( bSameViewTransform,
59  "CachedBitmap::doRedraw(): base called with changed view transform "
60  "(told otherwise during construction)" );
61 
62  RepaintTarget* pTarget = dynamic_cast< RepaintTarget* >(rTargetCanvas.get());
63 
64  ENSURE_OR_THROW( pTarget,
65  "CachedBitmap::redraw(): cannot cast target to RepaintTarget" );
66 
67  if( !pTarget->repaint( mpSurface,
68  rNewState,
69  maRenderState ) )
70  {
71  // target failed to repaint
72  return rendering::RepaintResult::FAILED;
73  }
74 
75  return rendering::RepaintResult::REDRAWN;
76  }
77 }
78 
79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
signed char sal_Int8
Target interface for XCachedPrimitive implementations.
CachedBitmap(::cairo::SurfaceSharedPtr pSurface, const css::rendering::ViewState &rUsedViewState, css::rendering::RenderState aUsedRenderState, const css::uno::Reference< css::rendering::XCanvas > &rTarget)
Create an XCachedPrimitive for given GraphicObject.
FilterGroup & rTarget
virtual void SAL_CALL disposing() override
Dispose all internal references.
mutable::osl::Mutex m_aMutex
sal::systools::COMReference< surface_type > mpSurface
std::shared_ptr< Surface > SurfaceSharedPtr
const css::rendering::RenderState maRenderState
virtual bool repaint(const ::cairo::SurfaceSharedPtr &pSurface, const css::rendering::ViewState &viewState, const css::rendering::RenderState &renderState)=0
::cairo::SurfaceSharedPtr mpSurface
#define ENSURE_OR_THROW(c, m)
virtual ::sal_Int8 doRedraw(const css::rendering::ViewState &rNewState, const css::rendering::ViewState &rOldState, const css::uno::Reference< css::rendering::XCanvas > &rTargetCanvas, bool bSameViewTransform) override
Actually perform the requested redraw.