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19 
20 #ifndef INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERSLIDEPREVIEW_HXX
21 #define INCLUDED_SDEXT_SOURCE_PRESENTER_PRESENTERSLIDEPREVIEW_HXX
22 
23 #include "PresenterController.hxx"
24 
25 #include <com/sun/star/awt/XPaintListener.hpp>
26 #include <com/sun/star/awt/XWindowListener.hpp>
27 #include <com/sun/star/drawing/XDrawPage.hpp>
28 #include <com/sun/star/drawing/XDrawView.hpp>
29 #include <com/sun/star/drawing/XSlideRenderer.hpp>
30 #include <com/sun/star/drawing/framework/XPane.hpp>
31 #include <com/sun/star/drawing/framework/XView.hpp>
32 #include <com/sun/star/uno/XComponentContext.hpp>
33 #include <cppuhelper/basemutex.hxx>
34 #include <cppuhelper/compbase.hxx>
35 #include <rtl/ref.hxx>
36 
37 namespace sdext::presenter {
38 
39 typedef ::cppu::WeakComponentImplHelper <
40     css::drawing::framework::XView,
41     css::drawing::XDrawView,
42     css::awt::XPaintListener,
43     css::awt::XWindowListener
44 > PresenterSlidePreviewInterfaceBase;
45 
46 /** Static preview of a slide.  Typically used for the preview of the next
47     slide.
48     This implementation shows a preview of the slide given to the
49     setCurrentSlide.  For showing the next slide the PresenterViewFactory
50     uses a derived class that overrides the setCurrentSlide() method.
51 */
52 class PresenterSlidePreview
53     : private ::cppu::BaseMutex,
54       public PresenterSlidePreviewInterfaceBase
55 {
56 public:
57     PresenterSlidePreview (
58         const css::uno::Reference<css::uno::XComponentContext>& rxContext,
59         const css::uno::Reference<css::drawing::framework::XResourceId>& rxViewId,
60         const css::uno::Reference<css::drawing::framework::XPane>& rxAnchorPane,
61         const ::rtl::Reference<PresenterController>& rpPresenterController);
62     virtual ~PresenterSlidePreview() override;
63     PresenterSlidePreview(const PresenterSlidePreview&) = delete;
64     PresenterSlidePreview& operator=(const PresenterSlidePreview&) = delete;
65     virtual void SAL_CALL disposing() override;
66 
67     // XResourceId
68 
69     virtual css::uno::Reference<css::drawing::framework::XResourceId> SAL_CALL getResourceId() override;
70 
71     virtual sal_Bool SAL_CALL isAnchorOnly() override;
72 
73     // XWindowListener
74 
75     virtual void SAL_CALL windowResized (const css::awt::WindowEvent& rEvent) override;
76 
77     virtual void SAL_CALL windowMoved (const css::awt::WindowEvent& rEvent) override;
78 
79     virtual void SAL_CALL windowShown (const css::lang::EventObject& rEvent) override;
80 
81     virtual void SAL_CALL windowHidden (const css::lang::EventObject& rEvent) override;
82 
83     // XPaintListener
84 
85     virtual void SAL_CALL windowPaint (const css::awt::PaintEvent& rEvent) override;
86 
87     // lang::XEventListener
88     virtual void SAL_CALL disposing (const css::lang::EventObject& rEvent) override;
89 
90     // XDrawView
91 
92     virtual void SAL_CALL setCurrentPage (
93         const css::uno::Reference<css::drawing::XDrawPage>& rxSlide) override;
94 
95     virtual css::uno::Reference<css::drawing::XDrawPage> SAL_CALL getCurrentPage() override;
96 
97 protected:
98     ::rtl::Reference<PresenterController> mpPresenterController;
99 
100 private:
101     css::uno::Reference<css::drawing::framework::XResourceId> mxViewId;
102     css::uno::Reference<css::drawing::XSlideRenderer> mxPreviewRenderer;
103 
104     /** This Image holds the preview of the current slide.  After resize
105         requests the image may be empty.  This results eventually in a call
106         to ProvideSlide() in order to created a preview in the correct new
107         size.
108     */
109     css::uno::Reference<css::rendering::XBitmap> mxPreview;
110     std::shared_ptr<PresenterBitmapContainer> mpBitmaps;
111 
112     /**  The current slide for which a preview is displayed.  This may or
113         may not be the same as the current slide of the PresenterView.
114     */
115     css::uno::Reference<css::drawing::XDrawPage> mxCurrentSlide;
116     double mnSlideAspectRatio;
117 
118     css::uno::Reference<css::awt::XWindow> mxWindow;
119     css::uno::Reference<css::rendering::XCanvas> mxCanvas;
120 
121     /** Set the given slide as the current slide of the called PresenterSlidePreview
122         object.
123     */
124     void SetSlide (const css::uno::Reference<css::drawing::XDrawPage>& rxPage);
125 
126     /** Paint the preview of the current slide centered in the window of the
127         anchor pane.
128     */
129     void Paint (const css::awt::Rectangle& rBoundingBox);
130 
131     /** React to a resize of the anchor pane.
132     */
133     void Resize();
134 
135     /** @throws css::lang::DisposedException when the object has already been
136         disposed.
137     */
138     void ThrowIfDisposed();
139 };
140 
141 } // end of namespace ::sd::presenter
142 
143 #endif
144 
145 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
146