xref: /trunk/main/canvas/source/vcl/canvas.cxx (revision cdf0e10c)
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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_canvas.hxx"
30 
31 #include <canvas/debug.hxx>
32 #include <canvas/verbosetrace.hxx>
33 #include <canvas/canvastools.hxx>
34 #include <tools/diagnose_ex.h>
35 
36 #include <com/sun/star/registry/XRegistryKey.hpp>
37 #include <com/sun/star/lang/XSingleServiceFactory.hpp>
38 #include <com/sun/star/lang/NoSupportException.hpp>
39 #include <com/sun/star/uno/XComponentContext.hpp>
40 
41 #include <vcl/canvastools.hxx>
42 #include <vcl/outdev.hxx>
43 #include <vcl/window.hxx>
44 #include <vcl/bitmapex.hxx>
45 
46 #include <basegfx/tools/canvastools.hxx>
47 
48 #include <algorithm>
49 
50 #include "canvas.hxx"
51 #include "windowoutdevholder.hxx"
52 
53 
54 using namespace ::com::sun::star;
55 
56 namespace vclcanvas
57 {
58     namespace
59     {
60         class OutDevHolder : public OutDevProvider,
61             private ::boost::noncopyable
62         {
63         public:
64             explicit OutDevHolder( OutputDevice& rOutDev ) :
65                 mrOutDev(rOutDev)
66             {}
67 
68         private:
69             virtual OutputDevice& 		getOutDev() { return mrOutDev; }
70             virtual const OutputDevice& getOutDev() const { return mrOutDev; }
71 
72             // TODO(Q2): Lifetime issue. This _only_ works reliably,
73             // if disposing the Canvas correctly disposes all
74             // entities which hold this pointer.
75             OutputDevice& mrOutDev;
76         };
77     }
78 
79     Canvas::Canvas( const uno::Sequence< uno::Any >&                aArguments,
80                     const uno::Reference< uno::XComponentContext >& rxContext ) :
81         maArguments(aArguments),
82         mxComponentContext( rxContext )
83     {
84     }
85 
86     void Canvas::initialize()
87     {
88         // #i64742# Only perform initialization when not in probe mode
89         if( maArguments.getLength() == 0 )
90             return;
91 
92         /* maArguments:
93            0: ptr to creating instance (Window or VirtualDevice)
94            1: SystemEnvData as a streamed Any (or empty for VirtualDevice)
95            2: current bounds of creating instance
96            3: bool, denoting always on top state for Window (always false for VirtualDevice)
97            4: XWindow for creating Window (or empty for VirtualDevice)
98            5: SystemGraphicsData as a streamed Any
99          */
100         tools::LocalGuard aGuard;
101 
102         VERBOSE_TRACE( "VCLCanvas::initialize called" );
103 
104         ENSURE_ARG_OR_THROW( maArguments.getLength() >= 6 &&
105                              maArguments[0].getValueTypeClass() == uno::TypeClass_HYPER,
106                              "Canvas::initialize: wrong number of arguments, or wrong types" );
107 
108         sal_Int64 nPtr = 0;
109         maArguments[0] >>= nPtr;
110 
111         OutputDevice* pOutDev = reinterpret_cast<OutputDevice*>(nPtr);
112         if( !pOutDev )
113             throw lang::NoSupportException(
114                 ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(
115                                      "Passed OutDev invalid!")),
116                 NULL);
117 
118         OutDevProviderSharedPtr pOutdevProvider( new OutDevHolder(*pOutDev) );
119 
120         // setup helper
121         maDeviceHelper.init( pOutdevProvider );
122         maCanvasHelper.init( *this,
123                              pOutdevProvider,
124                              true,   // OutDev state preservation
125                              false ); // no alpha on surface
126 
127         maArguments.realloc(0);
128     }
129 
130     Canvas::~Canvas()
131     {
132         OSL_TRACE( "Canvas destroyed" );
133     }
134 
135     void SAL_CALL Canvas::disposing()
136     {
137         tools::LocalGuard aGuard;
138 
139         mxComponentContext.clear();
140 
141         // forward to parent
142         CanvasBaseT::disposing();
143     }
144 
145     ::rtl::OUString SAL_CALL Canvas::getServiceName(  ) throw (::com::sun::star::uno::RuntimeException)
146     {
147         return ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( CANVAS_SERVICE_NAME ) );
148     }
149 
150     bool Canvas::repaint( const GraphicObjectSharedPtr&	rGrf,
151                           const rendering::ViewState&   viewState,
152                           const rendering::RenderState& renderState,
153                           const ::Point& 				rPt,
154                           const ::Size& 				rSz,
155                           const GraphicAttr&			rAttr ) const
156     {
157         tools::LocalGuard aGuard;
158 
159         return maCanvasHelper.repaint( rGrf, viewState, renderState, rPt, rSz, rAttr );
160     }
161 }
162