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Diffstat (limited to 'slideshow/source/engine/shapes/viewshape.hxx')
| -rw-r--r-- | slideshow/source/engine/shapes/viewshape.hxx | 319 |
1 files changed, 319 insertions, 0 deletions
diff --git a/slideshow/source/engine/shapes/viewshape.hxx b/slideshow/source/engine/shapes/viewshape.hxx new file mode 100644 index 000000000..c7e1d564c --- /dev/null +++ b/slideshow/source/engine/shapes/viewshape.hxx @@ -0,0 +1,319 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX +#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX + +#include <cppcanvas/renderer.hxx> +#include <cppcanvas/bitmap.hxx> + +#include <basegfx/range/b2drectangle.hxx> +#include <o3tl/typed_flags_set.hxx> + +#include <tools.hxx> +#include <shapeattributelayer.hxx> +#include <animatedsprite.hxx> +#include <viewlayer.hxx> +#include <doctreenode.hxx> + +#include <vector> +#include <memory> + +enum class UpdateFlags +{ + NONE = 0x00, + Transformation = 0x01, + Clip = 0x02, + Alpha = 0x04, + Position = 0x08, + Content = 0x10, + Force = 0x20, +}; +namespace o3tl { + template<> struct typed_flags<UpdateFlags> : is_typed_flags<UpdateFlags, 0x3f> {}; +} + + + +namespace slideshow::internal + { + /** This class is the viewable representation of a draw + document's XShape, associated to a specific View + + The class is able to render the associated XShape on + View implementations. + */ + class ViewShape + { + public: + /** Create a ViewShape for the given View + + @param rView + The associated View object. + */ + explicit ViewShape( const ViewLayerSharedPtr& rViewLayer ); + + ///Forbid copy construction + ViewShape(const ViewShape&) = delete; + /// Forbid copy assignment + ViewShape& operator=(const ViewShape&) = delete; + + /** Query the associated view layer of this shape + */ + const ViewLayerSharedPtr& getViewLayer() const; + + /** Query dimension of a safety border around the shape for AA + + If the view performs antialiasing, this method + calculates a safety border around the shape, in the + shape coordinate system, which is guaranteed to + include every pixel touched when rendering the shape. + */ + ::basegfx::B2DSize getAntialiasingBorder() const; + + + // animation methods + + + /** Notify the ViewShape that an animation starts now + + This method enters animation mode on the associate + target view. The shape can be animated in parallel on + different views. + */ + void enterAnimationMode(); + + /** Notify the ViewShape that it is no longer animated + + This methods ends animation mode on the associate + target view + */ + void leaveAnimationMode(); + + + // render methods + + + struct RenderArgs + { + /** Create render argument struct + + @param rOrigBounds + The initial shape bounds + + @param rUpdateBounds + The area covered by the shape + + @param rBounds + The current shape bounds + + @param rAttr + The current shape attribute set. Can be NULL, for + default attributes. Attention: stored as a reference, + thus, parameter object must stay valid! + + @param rSubsets + Vector of subset rendering ranges. Attention: + stored as a reference, thus, parameter object must + stay valid! + + @param nPrio + Shape priority + */ + RenderArgs( const ::basegfx::B2DRectangle& rOrigBounds, + const ::basegfx::B2DRectangle& rUpdateBounds, + const ::basegfx::B2DRectangle& rBounds, + const ::basegfx::B2DRectangle& rUnitBounds, + const ShapeAttributeLayerSharedPtr& rAttr, + const VectorOfDocTreeNodes& rSubsets, + double nPrio ) : + maOrigBounds( rOrigBounds ), + maUpdateBounds( rUpdateBounds ), + maBounds( rBounds ), + maUnitBounds( rUnitBounds ), + mrAttr( rAttr ), + mrSubsets( rSubsets ), + mnShapePriority( nPrio ) + { + } + + const ::basegfx::B2DRectangle maOrigBounds; + const ::basegfx::B2DRectangle maUpdateBounds; + const ::basegfx::B2DRectangle maBounds; + const ::basegfx::B2DRectangle maUnitBounds; + const ShapeAttributeLayerSharedPtr& mrAttr; + const VectorOfDocTreeNodes& mrSubsets; + const double mnShapePriority; + }; + + /** Update the ViewShape + + This method updates the ViewShape on the associated + view. If the shape is currently animated, the render + target is the sprite, otherwise the view's + canvas. This method does not render anything, if the + update flags are 0. + + @param rMtf + The metafile representation of the shape + + @param rArgs + Parameter structure, containing all necessary arguments + + @param nUpdateFlags + Bitmask of things to update. Use FORCE to force a repaint. + + @param bIsVisible + When false, the shape is fully invisible (and possibly + don't need to be painted) + + @return whether the rendering finished successfully. + */ + bool update( const GDIMetaFileSharedPtr& rMtf, + const RenderArgs& rArgs, + UpdateFlags nUpdateFlags, + bool bIsVisible ) const; + + /** Retrieve renderer for given canvas and metafile. + + If necessary, the renderer is created or updated for + the metafile and attribute layer. + + @return a renderer that renders to the given + destination canvas + */ + ::cppcanvas::RendererSharedPtr getRenderer( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas, + const GDIMetaFileSharedPtr& rMtf, + const ShapeAttributeLayerSharedPtr& rAttr ) const; + + + private: + struct RendererCacheEntry + { + RendererCacheEntry() : + mpDestinationCanvas(), + mpRenderer(), + mpMtf(), + mpLastBitmap(), + mpLastBitmapCanvas() + { + } + + const ::cppcanvas::CanvasSharedPtr& getDestinationCanvas() const + { + return mpDestinationCanvas; + } + + ::cppcanvas::CanvasSharedPtr mpDestinationCanvas; + ::cppcanvas::RendererSharedPtr mpRenderer; + GDIMetaFileSharedPtr mpMtf; + ::cppcanvas::BitmapSharedPtr mpLastBitmap; + ::cppcanvas::BitmapCanvasSharedPtr mpLastBitmapCanvas; + }; + + typedef ::std::vector< RendererCacheEntry > RendererCacheVector; + + + /** Prefetch Renderer for given canvas + */ + static bool prefetch( RendererCacheEntry& io_rCacheEntry, + const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas, + const GDIMetaFileSharedPtr& rMtf, + const ShapeAttributeLayerSharedPtr& rAttr ); + + /** Draw with prefetched Renderer to stored canvas + + This method draws prefetched Renderer to its + associated canvas (which happens to be mpLastCanvas). + */ + bool draw( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas, + const GDIMetaFileSharedPtr& rMtf, + const ShapeAttributeLayerSharedPtr& rAttr, + const ::basegfx::B2DHomMatrix& rTransform, + const ::basegfx::B2DPolyPolygon* pClip, + const VectorOfDocTreeNodes& rSubsets ) const; + + /** Render shape to an active sprite + */ + bool renderSprite( const ViewLayerSharedPtr& rViewLayer, + const GDIMetaFileSharedPtr& rMtf, + const ::basegfx::B2DRectangle& rOrigBounds, + const ::basegfx::B2DRectangle& rBounds, + const ::basegfx::B2DRectangle& rUnitBounds, + UpdateFlags nUpdateFlags, + const ShapeAttributeLayerSharedPtr& pAttr, + const VectorOfDocTreeNodes& rSubsets, + double nPrio, + bool bIsVisible ) const; + + /** Render shape to given canvas + */ + bool render( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas, + const GDIMetaFileSharedPtr& rMtf, + const ::basegfx::B2DRectangle& rBounds, + const ::basegfx::B2DRectangle& rUpdateBounds, + UpdateFlags nUpdateFlags, + const ShapeAttributeLayerSharedPtr& pAttr, + const VectorOfDocTreeNodes& rSubsets, + bool bIsVisible ) const; + + enum{ MAX_RENDER_CACHE_ENTRIES=2 }; + + /** Retrieve a valid iterator to renderer cache entry + + This method ensures that an internal limit of + MAX_RENDER_CACHE_ENTRIES is not exceeded. + + @param rDestinationCanvas + Destination canvas to retrieve cache entry for + + @return a valid iterator to a renderer cache entry for + the given canvas. The entry might be + default-constructed (if newly added) + */ + RendererCacheVector::iterator getCacheEntry( const ::cppcanvas::CanvasSharedPtr& rDestinationCanvas ) const; + + void invalidateRenderer() const; + + /** The view layer this object is part of. + + Needed for sprite creation + */ + ViewLayerSharedPtr mpViewLayer; + + /// A set of cached mtf/canvas combinations + mutable RendererCacheVector maRenderers; + + /// The sprite object + mutable AnimatedSpriteSharedPtr mpSprite; + + /// If true, render() calls go to the sprite + mutable bool mbAnimationMode; + + /// If true, shape needs full repaint (and the sprite a setup, if any) + mutable bool mbForceUpdate; + }; + + typedef ::std::shared_ptr< ViewShape > ViewShapeSharedPtr; + +} + +#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_SHAPES_VIEWSHAPE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |