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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 :
21 : // must be first
22 : #include <canvas/debug.hxx>
23 :
24 : #include <com/sun/star/awt/Rectangle.hpp>
25 : #include <com/sun/star/beans/XPropertySet.hpp>
26 : #include <com/sun/star/awt/FontWeight.hpp>
27 : #include <rtl/logfile.hxx>
28 :
29 : #include <vcl/metaact.hxx>
30 : #include <vcl/gdimtf.hxx>
31 :
32 : #include <basegfx/numeric/ftools.hxx>
33 :
34 : #include <boost/bind.hpp>
35 :
36 : #include <cmath> // for trigonometry and fabs
37 : #include <algorithm>
38 : #include <functional>
39 : #include <limits>
40 :
41 : #include "backgroundshape.hxx"
42 : #include "slideshowexceptions.hxx"
43 : #include "slideshowcontext.hxx"
44 : #include "gdimtftools.hxx"
45 : #include "shape.hxx"
46 : #include "viewbackgroundshape.hxx"
47 :
48 :
49 : using namespace ::com::sun::star;
50 :
51 :
52 : namespace slideshow
53 : {
54 : namespace internal
55 : {
56 : /** Representation of a draw document's background shape.
57 :
58 : This class implements the Shape interface for the
59 : background shape. Since the background shape is neither
60 : animatable nor attributable, those more specialized
61 : derivations of the Shape interface are not implemented
62 : here.
63 :
64 : @attention this class is to be treated 'final', i.e. one
65 : should not derive from it.
66 : */
67 0 : class BackgroundShape : public Shape
68 : {
69 : public:
70 : /** Create the background shape.
71 :
72 : This method creates a shape that handles the
73 : peculiarities of the draw API regarding background
74 : content.
75 : */
76 : BackgroundShape( const ::com::sun::star::uno::Reference<
77 : ::com::sun::star::drawing::XDrawPage >& xDrawPage,
78 : const ::com::sun::star::uno::Reference<
79 : ::com::sun::star::drawing::XDrawPage >& xMasterPage,
80 : const SlideShowContext& rContext ); // throw ShapeLoadFailedException;
81 :
82 : virtual ::com::sun::star::uno::Reference<
83 : ::com::sun::star::drawing::XShape > getXShape() const;
84 :
85 : // View layer methods
86 : //------------------------------------------------------------------
87 :
88 : virtual void addViewLayer( const ViewLayerSharedPtr& rNewLayer,
89 : bool bRedrawLayer );
90 : virtual bool removeViewLayer( const ViewLayerSharedPtr& rNewLayer );
91 : virtual bool clearAllViewLayers();
92 :
93 :
94 : // attribute methods
95 : //------------------------------------------------------------------
96 :
97 : virtual ::basegfx::B2DRectangle getBounds() const;
98 : virtual ::basegfx::B2DRectangle getDomBounds() const;
99 : virtual ::basegfx::B2DRectangle getUpdateArea() const;
100 : virtual bool isVisible() const;
101 : virtual double getPriority() const;
102 : virtual bool isBackgroundDetached() const;
103 :
104 :
105 : // render methods
106 : //------------------------------------------------------------------
107 :
108 : virtual bool update() const;
109 : virtual bool render() const;
110 : virtual bool isContentChanged() const;
111 :
112 : private:
113 : /// The metafile actually representing the Shape
114 : GDIMetaFileSharedPtr mpMtf;
115 :
116 : // The attributes of this Shape
117 : ::basegfx::B2DRectangle maBounds; // always needed for rendering
118 :
119 : /// the list of active view shapes (one for each registered view layer)
120 : typedef ::std::vector< ViewBackgroundShapeSharedPtr > ViewBackgroundShapeVector;
121 : ViewBackgroundShapeVector maViewShapes;
122 : };
123 :
124 :
125 : ////////////////////////////////////////////////////////////////////////////////
126 :
127 :
128 0 : BackgroundShape::BackgroundShape( const uno::Reference< drawing::XDrawPage >& xDrawPage,
129 : const uno::Reference< drawing::XDrawPage >& xMasterPage,
130 : const SlideShowContext& rContext ) :
131 : mpMtf(),
132 : maBounds(),
133 0 : maViewShapes()
134 : {
135 : uno::Reference< beans::XPropertySet > xPropSet( xDrawPage,
136 0 : uno::UNO_QUERY_THROW );
137 0 : GDIMetaFileSharedPtr pMtf( new GDIMetaFile() );
138 :
139 : // first try the page background (overrides
140 : // masterpage background), then try masterpage
141 0 : if( !getMetaFile( uno::Reference<lang::XComponent>(xDrawPage, uno::UNO_QUERY),
142 0 : xDrawPage, *pMtf, MTF_LOAD_BACKGROUND_ONLY,
143 0 : rContext.mxComponentContext ) &&
144 : !getMetaFile( uno::Reference<lang::XComponent>(xMasterPage, uno::UNO_QUERY),
145 0 : xDrawPage, *pMtf, MTF_LOAD_BACKGROUND_ONLY,
146 0 : rContext.mxComponentContext ))
147 : {
148 0 : throw ShapeLoadFailedException();
149 : }
150 :
151 : // there is a special background shape, add it
152 : // as the first one
153 : // ---------------------------------------------------
154 :
155 0 : sal_Int32 nDocWidth=0;
156 0 : sal_Int32 nDocHeight=0;
157 0 : xPropSet->getPropertyValue( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("Width") ) ) >>= nDocWidth;
158 0 : xPropSet->getPropertyValue( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM("Height") ) ) >>= nDocHeight;
159 :
160 0 : mpMtf = pMtf;
161 0 : maBounds = ::basegfx::B2DRectangle( 0,0,nDocWidth, nDocHeight );
162 0 : }
163 :
164 0 : uno::Reference< drawing::XShape > BackgroundShape::getXShape() const
165 : {
166 : // no real XShape representative
167 0 : return uno::Reference< drawing::XShape >();
168 : }
169 :
170 0 : void BackgroundShape::addViewLayer( const ViewLayerSharedPtr& rNewLayer,
171 : bool bRedrawLayer )
172 : {
173 0 : ViewBackgroundShapeVector::iterator aEnd( maViewShapes.end() );
174 :
175 : // already added?
176 0 : if( ::std::find_if( maViewShapes.begin(),
177 : aEnd,
178 : ::boost::bind<bool>(
179 : ::std::equal_to< ViewLayerSharedPtr >(),
180 : ::boost::bind( &ViewBackgroundShape::getViewLayer,
181 : _1 ),
182 0 : ::boost::cref( rNewLayer ) ) ) != aEnd )
183 : {
184 : // yes, nothing to do
185 0 : return;
186 : }
187 :
188 : maViewShapes.push_back(
189 : ViewBackgroundShapeSharedPtr(
190 : new ViewBackgroundShape( rNewLayer,
191 0 : maBounds ) ) );
192 :
193 : // render the Shape on the newly added ViewLayer
194 0 : if( bRedrawLayer )
195 0 : maViewShapes.back()->render( mpMtf );
196 : }
197 :
198 0 : bool BackgroundShape::removeViewLayer( const ViewLayerSharedPtr& rLayer )
199 : {
200 0 : const ViewBackgroundShapeVector::iterator aEnd( maViewShapes.end() );
201 :
202 : OSL_ENSURE( ::std::count_if(maViewShapes.begin(),
203 : aEnd,
204 : ::boost::bind<bool>(
205 : ::std::equal_to< ViewLayerSharedPtr >(),
206 : ::boost::bind( &ViewBackgroundShape::getViewLayer,
207 : _1 ),
208 : ::boost::cref( rLayer ) ) ) < 2,
209 : "BackgroundShape::removeViewLayer(): Duplicate ViewLayer entries!" );
210 :
211 0 : ViewBackgroundShapeVector::iterator aIter;
212 :
213 0 : if( (aIter=::std::remove_if( maViewShapes.begin(),
214 : aEnd,
215 : ::boost::bind<bool>(
216 : ::std::equal_to< ViewLayerSharedPtr >(),
217 : ::boost::bind( &ViewBackgroundShape::getViewLayer,
218 : _1 ),
219 0 : ::boost::cref( rLayer ) ) )) == aEnd )
220 : {
221 : // view layer seemingly was not added, failed
222 0 : return false;
223 : }
224 :
225 : // actually erase from container
226 0 : maViewShapes.erase( aIter, aEnd );
227 :
228 0 : return true;
229 : }
230 :
231 0 : bool BackgroundShape::clearAllViewLayers()
232 : {
233 0 : maViewShapes.clear();
234 0 : return true;
235 : }
236 :
237 0 : ::basegfx::B2DRectangle BackgroundShape::getBounds() const
238 : {
239 0 : return maBounds;
240 : }
241 :
242 0 : ::basegfx::B2DRectangle BackgroundShape::getDomBounds() const
243 : {
244 0 : return maBounds;
245 : }
246 :
247 0 : ::basegfx::B2DRectangle BackgroundShape::getUpdateArea() const
248 : {
249 : // TODO(F1): Need to expand background, too, when
250 : // antialiasing?
251 :
252 : // no transformation etc. possible for background shape
253 0 : return maBounds;
254 : }
255 :
256 0 : bool BackgroundShape::isVisible() const
257 : {
258 0 : return true;
259 : }
260 :
261 0 : double BackgroundShape::getPriority() const
262 : {
263 0 : return 0.0; // lowest prio, we're the background
264 : }
265 :
266 0 : bool BackgroundShape::update() const
267 : {
268 0 : return render();
269 : }
270 :
271 0 : bool BackgroundShape::render() const
272 : {
273 : RTL_LOGFILE_CONTEXT( aLog, "::presentation::internal::BackgroundShape::render()" );
274 : RTL_LOGFILE_CONTEXT_TRACE1( aLog, "::presentation::internal::BackgroundShape: 0x%X", this );
275 :
276 : // gcc again...
277 0 : const ::basegfx::B2DRectangle& rCurrBounds( BackgroundShape::getBounds() );
278 :
279 0 : if( rCurrBounds.getRange().equalZero() )
280 : {
281 : // zero-sized shapes are effectively invisible,
282 : // thus, we save us the rendering...
283 0 : return true;
284 : }
285 :
286 : // redraw all view shapes, by calling their render() method
287 0 : if( ::std::count_if( maViewShapes.begin(),
288 : maViewShapes.end(),
289 : ::boost::bind( &ViewBackgroundShape::render,
290 : _1,
291 0 : ::boost::cref( mpMtf ) ) )
292 0 : != static_cast<ViewBackgroundShapeVector::difference_type>(maViewShapes.size()) )
293 : {
294 : // at least one of the ViewBackgroundShape::render() calls did return
295 : // false - update failed on at least one ViewLayer
296 0 : return false;
297 : }
298 :
299 0 : return true;
300 : }
301 :
302 0 : bool BackgroundShape::isContentChanged() const
303 : {
304 0 : return false;
305 : }
306 :
307 0 : bool BackgroundShape::isBackgroundDetached() const
308 : {
309 0 : return false; // we're not animatable
310 : }
311 :
312 : //////////////////////////////////////////////////////////
313 :
314 0 : ShapeSharedPtr createBackgroundShape(
315 : const uno::Reference< drawing::XDrawPage >& xDrawPage,
316 : const uno::Reference< drawing::XDrawPage >& xMasterPage,
317 : const SlideShowContext& rContext )
318 : {
319 : return ShapeSharedPtr(
320 : new BackgroundShape(
321 : xDrawPage,
322 : xMasterPage,
323 0 : rContext ));
324 : }
325 : }
326 0 : }
327 :
328 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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