sdext/source/presenter/PresenterSlidePreview.hxx

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  31
  32 #ifndef SDEXT_PRESENTER_SLIDE_PREVIEW_HXX
  33 #define SDEXT_PRESENTER_SLIDE_PREVIEW_HXX
  34
  35 #include "PresenterController.hxx"
  36
  37 #include <boost/noncopyable.hpp>
  38 #include <com/sun/star/awt/XBitmap.hpp>
  39 #include <com/sun/star/awt/XDisplayBitmap.hpp>
  40 #include <com/sun/star/awt/XPaintListener.hpp>
  41 #include <com/sun/star/awt/XWindowListener.hpp>
  42 #include <com/sun/star/drawing/XDrawPage.hpp>
  43 #include <com/sun/star/drawing/XDrawView.hpp>
  44 #include <com/sun/star/drawing/XSlideRenderer.hpp>
  45 #include <com/sun/star/drawing/framework/XPane.hpp>
  46 #include <com/sun/star/drawing/framework/XView.hpp>
  47 #include <com/sun/star/lang/DisposedException.hpp>
  48 #include <com/sun/star/uno/XComponentContext.hpp>
  49 #include <cppuhelper/basemutex.hxx>
  50 #include <cppuhelper/compbase4.hxx>
  51 #include <rtl/ref.hxx>
  52
  53 namespace css = ::com::sun::star;
  54
  55 namespace sdext { namespace presenter {
  56
  57 namespace {
  58     typedef ::cppu::WeakComponentImplHelper4 <
  59         css::drawing::framework::XView,
  60         css::drawing::XDrawView,
  61         css::awt::XPaintListener,
  62         css::awt::XWindowListener
  63     > PresenterSlidePreviewInterfaceBase;
  64 }
  65
  66
  67 /** Static preview of a slide.  Typically used for the preview of the next
  68     slide.
  69     This implementation shows a preview of the slide given to the
  70     setCurrentSlide.  For showing the next slide the PresenterViewFactory
  71     uses a derived class that overloads the setCurrentSlide() method.
  72 */
  73 class PresenterSlidePreview
  74     : private ::boost::noncopyable,
  75       private ::cppu::BaseMutex,
  76       public PresenterSlidePreviewInterfaceBase
  77 {
  78 public:
  79     PresenterSlidePreview (
  80         const css::uno::Reference<css::uno::XComponentContext>& rxContext,
  81         const css::uno::Reference<css::drawing::framework::XResourceId>& rxViewId,
  82         const css::uno::Reference<css::drawing::framework::XPane>& rxAnchorPane,
  83         const ::rtl::Reference<PresenterController>& rpPresenterController);
  84     virtual ~PresenterSlidePreview (void);
  85     virtual void SAL_CALL disposing (void);
  86
  87
  88     // XResourceId
  89
  90     virtual css::uno::Reference<css::drawing::framework::XResourceId> SAL_CALL getResourceId (void)
  91         throw (css::uno::RuntimeException);
  92
  93     virtual sal_Bool SAL_CALL isAnchorOnly (void)
  94         throw (com::sun::star::uno::RuntimeException);
  95
  96     // XWindowListener
  97
  98     virtual void SAL_CALL windowResized (const css::awt::WindowEvent& rEvent)
  99         throw (css::uno::RuntimeException);
 100
 101     virtual void SAL_CALL windowMoved (const css::awt::WindowEvent& rEvent)
 102         throw (css::uno::RuntimeException);
 103
 104     virtual void SAL_CALL windowShown (const css::lang::EventObject& rEvent)
 105         throw (css::uno::RuntimeException);
 106
 107     virtual void SAL_CALL windowHidden (const css::lang::EventObject& rEvent)
 108         throw (css::uno::RuntimeException);
 109
 110
 111     // XPaintListener
 112
 113     virtual void SAL_CALL windowPaint (const css::awt::PaintEvent& rEvent)
 114         throw (css::uno::RuntimeException);
 115
 116
 117     // lang::XEventListener
 118     virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent)
 119         throw (css::uno::RuntimeException);
 120
 121
 122     // XDrawView
 123
 124     virtual void SAL_CALL setCurrentPage (
 125         const css::uno::Reference<css::drawing::XDrawPage>& rxSlide)
 126         throw (css::uno::RuntimeException);
 127
 128     virtual css::uno::Reference<css::drawing::XDrawPage> SAL_CALL getCurrentPage (void)
 129         throw (css::uno::RuntimeException);
 130
 131 protected:
 132     ::rtl::Reference<PresenterController> mpPresenterController;
 133
 134 private:
 135     css::uno::Reference<css::drawing::framework::XPane> mxPane;
 136     css::uno::Reference<css::drawing::framework::XResourceId> mxViewId;
 137     css::uno::Reference<css::drawing::XSlideRenderer> mxPreviewRenderer;
 138
 139     /** This Image holds the preview of the current slide.  After resize
 140         requests the image may be empty.  This results eventually in a call
 141         to ProvideSlide() in order to created a preview in the correct new
 142         size.
 143     */
 144     css::uno::Reference<css::rendering::XBitmap> mxPreview;
 145
 146     /**  The current slide for which a preview is displayed.  This may or
 147         may not be the same as the current slide of the PresenterView.
 148     */
 149     css::uno::Reference<css::drawing::XDrawPage> mxCurrentSlide;
 150     double mnSlideAspectRatio;
 151
 152     css::uno::Reference<css::awt::XWindow> mxWindow;
 153     css::uno::Reference<css::rendering::XCanvas> mxCanvas;
 154
 155     /** Set the given slide as the current slide of the called PresenterSlidePreview
 156         object.
 157     */
 158     void SetSlide (const css::uno::Reference<css::drawing::XDrawPage>& rxPage);
 159
 160     /** Paint the preview of the current slide centered in the window of the
 161         anchor pane.
 162     */
 163     void Paint (const css::awt::Rectangle& rBoundingBox);
 164
 165     /** React to a resize of the anchor pane.
 166     */
 167     void Resize (void);
 168
 169     /** This method throws a DisposedException when the object has already been
 170         disposed.
 171     */
 172     void ThrowIfDisposed (void) throw (css::lang::DisposedException);
 173 };
 174
 175 } } // end of namespace ::sd::presenter
 176
 177 #endif