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Current view: top level - slideshow/source/engine/shapes - viewshape.hxx (source / functions) Hit Total Coverage
Test: commit e02a6cb2c3e2b23b203b422e4e0680877f232636 Lines: 0 11 0.0 %
Date: 2014-04-14 Functions: 0 8 0.0 %
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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SLIDESHOW_VIEWSHAPE_HXX
      21             : #define INCLUDED_SLIDESHOW_VIEWSHAPE_HXX
      22             : 
      23             : #include <cppcanvas/renderer.hxx>
      24             : #include <cppcanvas/bitmap.hxx>
      25             : 
      26             : #include <basegfx/range/b2drectangle.hxx>
      27             : #include <basegfx/polygon/b2dpolygon.hxx>
      28             : 
      29             : #include <boost/shared_ptr.hpp>
      30             : #include <boost/utility.hpp>
      31             : 
      32             : #include "tools.hxx"
      33             : #include "shapeattributelayer.hxx"
      34             : #include "animatedsprite.hxx"
      35             : #include "viewlayer.hxx"
      36             : #include "doctreenode.hxx"
      37             : 
      38             : #include <vector>
      39             : 
      40             : 
      41             : namespace slideshow
      42             : {
      43             :     namespace internal
      44             :     {
      45             :         /** This class is the viewable representation of a draw
      46             :             document's XShape, associated to a specific View
      47             : 
      48             :             The class is able to render the associated XShape on
      49             :             View implementations.
      50             :          */
      51           0 :         class ViewShape : private boost::noncopyable
      52             :         {
      53             :         public:
      54             :             /** Create a ViewShape for the given View
      55             : 
      56             :                 @param rView
      57             :                 The associated View object.
      58             :              */
      59             :             explicit ViewShape( const ViewLayerSharedPtr& rViewLayer );
      60             : 
      61             :             /** Query the associated view layer of this shape
      62             :              */
      63             :             ViewLayerSharedPtr getViewLayer() const;
      64             : 
      65             :             /** Query dimension of a safety border around the shape for AA
      66             : 
      67             :                 If the view performs antialiasing, this method
      68             :                 calculates a safety border around the shape, in the
      69             :                 shape coordinate system, which is guaranteed to
      70             :                 include every pixel touched when rendering the shape.
      71             :              */
      72             :             ::basegfx::B2DSize getAntialiasingBorder() const;
      73             : 
      74             : 
      75             :             // animation methods
      76             : 
      77             : 
      78             :             /** Notify the ViewShape that an animation starts now
      79             : 
      80             :                 This method enters animation mode on the associate
      81             :                 target view. The shape can be animated in parallel on
      82             :                 different views.
      83             : 
      84             :                 @return whether the mode change finished successfully.
      85             :              */
      86             :             bool enterAnimationMode();
      87             : 
      88             :             /** Notify the ViewShape that it is no longer animated
      89             : 
      90             :                 This methods ends animation mode on the associate
      91             :                 target view
      92             :              */
      93             :             void leaveAnimationMode();
      94             : 
      95             :             /** Query whether the ViewShape is currently animated
      96             : 
      97             :                 This method checks whether the ViewShape is currently in
      98             :                 animation mode.
      99             :              */
     100           0 :             bool isBackgroundDetached() const { return mbAnimationMode; }
     101             : 
     102             : 
     103             :             // render methods
     104             : 
     105             : 
     106             :             enum UpdateFlags
     107             :             {
     108             :                 NONE=           0,
     109             :                 TRANSFORMATION= 1,
     110             :                 CLIP=           2,
     111             :                 ALPHA=          4,
     112             :                 POSITION=       8,
     113             :                 CONTENT=        16,
     114             :                 FORCE=          32
     115             :             };
     116             : 
     117             :             struct RenderArgs
     118             :             {
     119             :                 /** Create render argument struct
     120             : 
     121             :                     @param rOrigBounds
     122             :                     The initial shape bounds
     123             : 
     124             :                     @param rUpdateBounds
     125             :                     The area covered by the shape
     126             : 
     127             :                     @param rBounds
     128             :                     The current shape bounds
     129             : 
     130             :                     @param rAttr
     131             :                     The current shape attribute set. Can be NULL, for
     132             :                     default attributes. Attention: stored as a reference,
     133             :                     thus, parameter object must stay valid!
     134             : 
     135             :                     @param rSubsets
     136             :                     Vector of subset rendering ranges. Attention:
     137             :                     stored as a reference, thus, parameter object must
     138             :                     stay valid!
     139             : 
     140             :                     @param nPrio
     141             :                     Shape priority
     142             :                 */
     143           0 :                 RenderArgs( const ::basegfx::B2DRectangle&      rOrigBounds,
     144             :                             const ::basegfx::B2DRectangle&      rUpdateBounds,
     145             :                             const ::basegfx::B2DRectangle&      rBounds,
     146             :                             const ::basegfx::B2DRectangle&      rUnitBounds,
     147             :                             const ShapeAttributeLayerSharedPtr& rAttr,
     148             :                             const VectorOfDocTreeNodes&         rSubsets,
     149             :                             double                              nPrio ) :
     150             :                     maOrigBounds( rOrigBounds ),
     151             :                     maUpdateBounds( rUpdateBounds ),
     152             :                     maBounds( rBounds ),
     153             :                     maUnitBounds( rUnitBounds ),
     154             :                     mrAttr( rAttr ),
     155             :                     mrSubsets( rSubsets ),
     156           0 :                     mnShapePriority( nPrio )
     157             :                 {
     158           0 :                 }
     159             : 
     160             :                 const ::basegfx::B2DRectangle       maOrigBounds;
     161             :                 const ::basegfx::B2DRectangle       maUpdateBounds;
     162             :                 const ::basegfx::B2DRectangle       maBounds;
     163             :                 const ::basegfx::B2DRectangle       maUnitBounds;
     164             :                 const ShapeAttributeLayerSharedPtr& mrAttr;
     165             :                 const VectorOfDocTreeNodes&         mrSubsets;
     166             :                 const double                        mnShapePriority;
     167             :             };
     168             : 
     169             :             /** Update the ViewShape
     170             : 
     171             :                 This method updates the ViewShape on the associated
     172             :                 view. If the shape is currently animated, the render
     173             :                 target is the sprite, otherwise the view's
     174             :                 canvas. This method does not render anything, if the
     175             :                 update flags are 0.
     176             : 
     177             :                 @param rMtf
     178             :                 The metafile representation of the shape
     179             : 
     180             :                 @param rArgs
     181             :                 Parameter structure, containing all necessary arguments
     182             : 
     183             :                 @param nUpdateFlags
     184             :                 Bitmask of things to update. Use FORCE to force a repaint.
     185             : 
     186             :                 @param bIsVisible
     187             :                 When false, the shape is fully invisible (and possibly
     188             :                 don't need to be painted)
     189             : 
     190             :                 @return whether the rendering finished successfully.
     191             :             */
     192             :             bool update( const GDIMetaFileSharedPtr&    rMtf,
     193             :                          const RenderArgs&              rArgs,
     194             :                          int                            nUpdateFlags,
     195             :                          bool                           bIsVisible ) const;
     196             : 
     197             :             /** Retrieve renderer for given canvas and metafile.
     198             : 
     199             :                 If necessary, the renderer is created or updated for
     200             :                 the metafile and attribute layer.
     201             : 
     202             :                 @return a renderer that renders to the given
     203             :                 destination canvas
     204             :              */
     205             :             ::cppcanvas::RendererSharedPtr getRenderer( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas,
     206             :                                                         const GDIMetaFileSharedPtr&         rMtf,
     207             :                                                         const ShapeAttributeLayerSharedPtr& rAttr ) const;
     208             : 
     209             : 
     210             :         private:
     211           0 :             struct RendererCacheEntry
     212             :             {
     213           0 :                 RendererCacheEntry() :
     214             :                     mpDestinationCanvas(),
     215             :                     mpRenderer(),
     216             :                     mpMtf(),
     217             :                     mpLastBitmap(),
     218           0 :                     mpLastBitmapCanvas()
     219             :                 {
     220           0 :                 }
     221             : 
     222           0 :                 ::cppcanvas::CanvasSharedPtr getDestinationCanvas() const
     223             :                 {
     224           0 :                     return mpDestinationCanvas;
     225             :                 }
     226             : 
     227             :                 ::cppcanvas::CanvasSharedPtr        mpDestinationCanvas;
     228             :                 ::cppcanvas::RendererSharedPtr      mpRenderer;
     229             :                 GDIMetaFileSharedPtr                mpMtf;
     230             :                 ::cppcanvas::BitmapSharedPtr        mpLastBitmap;
     231             :                 ::cppcanvas::BitmapCanvasSharedPtr  mpLastBitmapCanvas;
     232             :             };
     233             : 
     234             :             typedef ::std::vector< RendererCacheEntry > RendererCacheVector;
     235             : 
     236             : 
     237             :             /** Prefetch Renderer for given canvas
     238             :              */
     239             :             bool prefetch( RendererCacheEntry&                  io_rCacheEntry,
     240             :                            const ::cppcanvas::CanvasSharedPtr&  rDestinationCanvas,
     241             :                            const GDIMetaFileSharedPtr&          rMtf,
     242             :                            const ShapeAttributeLayerSharedPtr&  rAttr ) const;
     243             : 
     244             :             /** Draw with prefetched Renderer to stored canvas
     245             : 
     246             :                 This method draws prefetched Renderer to its
     247             :                 associated canvas (which happens to be mpLastCanvas).
     248             :              */
     249             :             bool draw( const ::cppcanvas::CanvasSharedPtr&  rDestinationCanvas,
     250             :                        const GDIMetaFileSharedPtr&          rMtf,
     251             :                        const ShapeAttributeLayerSharedPtr&  rAttr,
     252             :                        const ::basegfx::B2DHomMatrix&       rTransform,
     253             :                        const ::basegfx::B2DPolyPolygon*     pClip,
     254             :                        const VectorOfDocTreeNodes&          rSubsets ) const;
     255             : 
     256             :             /** Render shape to an active sprite
     257             :              */
     258             :             bool renderSprite( const ViewLayerSharedPtr&            rViewLayer,
     259             :                                const GDIMetaFileSharedPtr&          rMtf,
     260             :                                const ::basegfx::B2DRectangle&       rOrigBounds,
     261             :                                const ::basegfx::B2DRectangle&       rBounds,
     262             :                                const ::basegfx::B2DRectangle&       rUnitBounds,
     263             :                                int                                  nUpdateFlags,
     264             :                                const ShapeAttributeLayerSharedPtr&  pAttr,
     265             :                                const VectorOfDocTreeNodes&          rSubsets,
     266             :                                double                               nPrio,
     267             :                                bool                                 bIsVisible ) const;
     268             : 
     269             :             /** Render shape to given canvas
     270             :              */
     271             :             bool render( const ::cppcanvas::CanvasSharedPtr&    rDestinationCanvas,
     272             :                          const GDIMetaFileSharedPtr&            rMtf,
     273             :                          const ::basegfx::B2DRectangle&         rBounds,
     274             :                          const ::basegfx::B2DRectangle&         rUpdateBounds,
     275             :                          int                                    nUpdateFlags,
     276             :                          const ShapeAttributeLayerSharedPtr&    pAttr,
     277             :                          const VectorOfDocTreeNodes&            rSubsets,
     278             :                          bool                                   bIsVisible ) const;
     279             : 
     280             :             /** Calc sprite size in pixel
     281             : 
     282             :                 Converts user coordinate system to device pixel, and
     283             :                 adds antialiasing border.
     284             : 
     285             :                 @param rUserSize
     286             :                 Size of the sprite in user coordinate system (doc coordinates)
     287             :              */
     288             :             ::basegfx::B2DSize calcSpriteSizePixel( const ::basegfx::B2DSize& rUserSize ) const;
     289             : 
     290             :             enum{ MAX_RENDER_CACHE_ENTRIES=2 };
     291             : 
     292             :             /** Retrieve a valid iterator to renderer cache entry
     293             : 
     294             :                 This method ensures that an internal limit of
     295             :                 MAX_RENDER_CACHE_ENTRIES is not exceeded.
     296             : 
     297             :                 @param rDestinationCanvas
     298             :                 Destination canvas to retrieve cache entry for
     299             : 
     300             :                 @return a valid iterator to a renderer cache entry for
     301             :                 the given canvas. The entry might be
     302             :                 default-constructed (if newly added)
     303             :              */
     304             :             RendererCacheVector::iterator getCacheEntry( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas ) const;
     305             : 
     306             :             void invalidateRenderer() const;
     307             : 
     308             :             /** The view layer this object is part of.
     309             : 
     310             :                 Needed for sprite creation
     311             :             */
     312             :             ViewLayerSharedPtr                          mpViewLayer;
     313             : 
     314             :             /// A set of cached mtf/canvas combinations
     315             :             mutable RendererCacheVector                 maRenderers;
     316             : 
     317             :             /// The sprite object
     318             :             mutable AnimatedSpriteSharedPtr             mpSprite;
     319             : 
     320             :             /// If true, render() calls go to the sprite
     321             :             mutable bool                                mbAnimationMode;
     322             : 
     323             :             /// If true, shape needs full repaint (and the sprite a setup, if any)
     324             :             mutable bool                                mbForceUpdate;
     325             :         };
     326             : 
     327             :         typedef ::boost::shared_ptr< ViewShape > ViewShapeSharedPtr;
     328             : 
     329             :     }
     330             : }
     331             : 
     332             : #endif /* INCLUDED_SLIDESHOW_VIEWSHAPE_HXX */
     333             : 
     334             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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