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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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