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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 : #include <svx/sdr/contact/viewobjectcontactofgraphic.hxx>
21 : #include <svx/sdr/contact/viewcontactofgraphic.hxx>
22 : #include <svx/svdograf.hxx>
23 : #include <svx/sdr/contact/objectcontact.hxx>
24 : #include <svx/svdmodel.hxx>
25 : #include <svx/svdpage.hxx>
26 :
27 : #include "eventhandler.hxx"
28 :
29 : namespace sdr
30 : {
31 : namespace event
32 : {
33 : class AsynchGraphicLoadingEvent : public BaseEvent
34 : {
35 : // the ViewContactOfGraphic to work with
36 : sdr::contact::ViewObjectContactOfGraphic& mrVOCOfGraphic;
37 :
38 : public:
39 : // basic constructor.
40 : AsynchGraphicLoadingEvent(EventHandler& rEventHandler, sdr::contact::ViewObjectContactOfGraphic& rVOCOfGraphic);
41 :
42 : // destructor
43 : virtual ~AsynchGraphicLoadingEvent();
44 :
45 : // the called method if the event is triggered
46 : virtual void ExecuteEvent() SAL_OVERRIDE;
47 : };
48 :
49 0 : AsynchGraphicLoadingEvent::AsynchGraphicLoadingEvent(
50 : EventHandler& rEventHandler, sdr::contact::ViewObjectContactOfGraphic& rVOCOfGraphic)
51 : : BaseEvent(rEventHandler),
52 0 : mrVOCOfGraphic(rVOCOfGraphic)
53 : {
54 0 : }
55 :
56 0 : AsynchGraphicLoadingEvent::~AsynchGraphicLoadingEvent()
57 : {
58 0 : mrVOCOfGraphic.forgetAsynchGraphicLoadingEvent(this);
59 0 : }
60 :
61 0 : void AsynchGraphicLoadingEvent::ExecuteEvent()
62 : {
63 0 : mrVOCOfGraphic.doAsynchGraphicLoading();
64 0 : }
65 : } // end of namespace event
66 : } // end of namespace sdr
67 :
68 :
69 :
70 : namespace sdr
71 : {
72 : namespace contact
73 : {
74 : // Test graphics state and eventually trigger a SwapIn event or an Asynchronous
75 : // load event. Return value gives info if SwapIn was triggered or not
76 92 : bool ViewObjectContactOfGraphic::impPrepareGraphicWithAsynchroniousLoading()
77 : {
78 92 : bool bRetval(false);
79 92 : SdrGrafObj& rGrafObj = getSdrGrafObj();
80 :
81 92 : if(rGrafObj.IsSwappedOut())
82 : {
83 0 : if(rGrafObj.IsLinkedGraphic())
84 : {
85 : // update graphic link
86 0 : rGrafObj.ImpUpdateGraphicLink();
87 : }
88 : else
89 : {
90 : // SwapIn needs to be done. Decide if it can be done asynchronious.
91 0 : bool bSwapInAsynchronious(false);
92 0 : ObjectContact& rObjectContact = GetObjectContact();
93 :
94 : // only when allowed from configuration
95 0 : if(rObjectContact.IsAsynchronGraphicsLoadingAllowed())
96 : {
97 : // direct output or vdev output (PageView buffering)
98 0 : if(rObjectContact.isOutputToWindow() || rObjectContact.isOutputToVirtualDevice())
99 : {
100 : // only when no metafile recording
101 0 : if(!rObjectContact.isOutputToRecordingMetaFile())
102 : {
103 : // allow asynchronious loading
104 0 : bSwapInAsynchronious = true;
105 : }
106 : }
107 : }
108 :
109 0 : if(bSwapInAsynchronious)
110 : {
111 : // maybe it's on the way, then do nothing
112 0 : if(!mpAsynchLoadEvent)
113 : {
114 : // Trigger asynchronious SwapIn.
115 0 : sdr::event::TimerEventHandler& rEventHandler = rObjectContact.GetEventHandler();
116 :
117 0 : mpAsynchLoadEvent = new sdr::event::AsynchGraphicLoadingEvent(rEventHandler, *this);
118 : }
119 : }
120 : else
121 : {
122 0 : if(rObjectContact.isOutputToPrinter() || rObjectContact.isOutputToPDFFile())
123 : {
124 : // #i76395# preview mechanism is only active if
125 : // swapin is called from inside paint preparation, so mbInsidePaint
126 : // has to be false to be able to print with high resolution
127 0 : rGrafObj.ForceSwapIn();
128 : }
129 : else
130 : {
131 : // SwapIn direct
132 0 : rGrafObj.mbInsidePaint = true;
133 0 : rGrafObj.ForceSwapIn();
134 0 : rGrafObj.mbInsidePaint = false;
135 : }
136 :
137 0 : bRetval = true;
138 : }
139 : }
140 : }
141 : else
142 : {
143 : // it is not swapped out, somehow it was loaded. In that case, forget
144 : // about an existing triggered event
145 92 : if(mpAsynchLoadEvent)
146 : {
147 : // just delete it, this will remove it from the EventHandler and
148 : // will trigger forgetAsynchGraphicLoadingEvent from the destructor
149 0 : delete mpAsynchLoadEvent;
150 : }
151 : }
152 :
153 92 : return bRetval;
154 : }
155 :
156 : // Test graphics state and eventually trigger a SwapIn event. Return value
157 : // gives info if SwapIn was triggered or not
158 0 : bool ViewObjectContactOfGraphic::impPrepareGraphicWithSynchroniousLoading()
159 : {
160 0 : bool bRetval(false);
161 0 : SdrGrafObj& rGrafObj = getSdrGrafObj();
162 :
163 0 : if(rGrafObj.IsSwappedOut())
164 : {
165 0 : if(rGrafObj.IsLinkedGraphic())
166 : {
167 : // update graphic link
168 0 : rGrafObj.ImpUpdateGraphicLink( false );
169 : }
170 : else
171 : {
172 0 : ObjectContact& rObjectContact = GetObjectContact();
173 :
174 0 : if(rObjectContact.isOutputToPrinter() || rObjectContact.isOutputToPDFFile())
175 : {
176 : // #i76395# preview mechanism is only active if
177 : // swapin is called from inside paint preparation, so mbInsidePaint
178 : // has to be false to be able to print with high resolution
179 0 : rGrafObj.ForceSwapIn();
180 : }
181 : else
182 : {
183 : // SwapIn direct
184 0 : rGrafObj.mbInsidePaint = true;
185 0 : rGrafObj.ForceSwapIn();
186 0 : rGrafObj.mbInsidePaint = false;
187 : }
188 :
189 0 : bRetval = true;
190 : }
191 : }
192 :
193 0 : return bRetval;
194 : }
195 :
196 : // This is the call from the asynch graphic loading. This may only be called from
197 : // AsynchGraphicLoadingEvent::ExecuteEvent(). Do load the graphics. The event will
198 : // be deleted (consumed) and forgetAsynchGraphicLoadingEvent will be called.
199 0 : void ViewObjectContactOfGraphic::doAsynchGraphicLoading()
200 : {
201 : DBG_ASSERT(mpAsynchLoadEvent, "ViewObjectContactOfGraphic::doAsynchGraphicLoading: I did not trigger a event, why am i called (?)");
202 :
203 : // swap it in
204 0 : SdrGrafObj& rGrafObj = getSdrGrafObj();
205 0 : rGrafObj.ForceSwapIn();
206 :
207 : // #i103720# forget event to avoid possible deletion by the following ActionChanged call
208 : // which may use createPrimitive2DSequence/impPrepareGraphicWithAsynchroniousLoading again.
209 : // Deletion is actally done by the scheduler who leaded to coming here
210 0 : mpAsynchLoadEvent = 0;
211 :
212 : // Invalidate all paint areas and check existing animation (which may have changed).
213 0 : GetViewContact().ActionChanged();
214 0 : }
215 :
216 : // This is the call from the destructor of the asynch graphic loading event.
217 : // No one else has to call this. It is needed to let this object forget about
218 : // the event. The parameter allows checking for the correct event.
219 0 : void ViewObjectContactOfGraphic::forgetAsynchGraphicLoadingEvent(sdr::event::AsynchGraphicLoadingEvent* pEvent)
220 : {
221 : (void) pEvent; // suppress warning
222 :
223 0 : if(mpAsynchLoadEvent)
224 : {
225 : OSL_ENSURE(!pEvent || mpAsynchLoadEvent == pEvent,
226 : "ViewObjectContactOfGraphic::forgetAsynchGraphicLoadingEvent: Forced to forget another event then i have scheduled (?)");
227 :
228 : // forget event
229 0 : mpAsynchLoadEvent = 0;
230 : }
231 0 : }
232 :
233 184 : SdrGrafObj& ViewObjectContactOfGraphic::getSdrGrafObj()
234 : {
235 184 : return static_cast< ViewContactOfGraphic& >(GetViewContact()).GetGrafObject();
236 : }
237 :
238 92 : drawinglayer::primitive2d::Primitive2DSequence ViewObjectContactOfGraphic::createPrimitive2DSequence(const DisplayInfo& rDisplayInfo) const
239 : {
240 : // prepare primitive generation with evtl. loading the graphic when it's swapped out
241 92 : SdrGrafObj& rGrafObj = const_cast< ViewObjectContactOfGraphic* >(this)->getSdrGrafObj();
242 92 : bool bDoAsynchronGraphicLoading(rGrafObj.GetModel() && rGrafObj.GetModel()->IsSwapGraphics());
243 92 : bool bSwapInDone(false);
244 92 : bool bSwapInExclusive(false);
245 :
246 92 : if( bDoAsynchronGraphicLoading && rGrafObj.IsSwappedOut() )
247 : {
248 : // sometimes it is needed that each graphic is completely available and swapped in
249 : // for these cases a ForceSwapIn is called later at the graphic object
250 0 : if ( rGrafObj.GetPage() && rGrafObj.GetPage()->IsMasterPage() )
251 : {
252 : // #i102380# force Swap-In for GraphicObjects on MasterPage to have a nicer visualisation
253 0 : bDoAsynchronGraphicLoading = false;
254 : }
255 0 : else if ( GetObjectContact().isOutputToPrinter()
256 0 : || GetObjectContact().isOutputToRecordingMetaFile()
257 0 : || GetObjectContact().isOutputToPDFFile() )
258 : {
259 0 : bDoAsynchronGraphicLoading = false;
260 0 : bSwapInExclusive = true;
261 : }
262 : }
263 92 : if( bDoAsynchronGraphicLoading )
264 : {
265 92 : bSwapInDone = const_cast< ViewObjectContactOfGraphic* >(this)->impPrepareGraphicWithAsynchroniousLoading();
266 : }
267 : else
268 : {
269 0 : bSwapInDone = const_cast< ViewObjectContactOfGraphic* >(this)->impPrepareGraphicWithSynchroniousLoading();
270 : }
271 :
272 : // get return value by calling parent
273 92 : drawinglayer::primitive2d::Primitive2DSequence xRetval = ViewObjectContactOfSdrObj::createPrimitive2DSequence(rDisplayInfo);
274 :
275 92 : if(xRetval.hasElements())
276 : {
277 : // #i103255# suppress when graphic needs draft visualisation and output
278 : // is for PDF export/Printer
279 92 : const ViewContactOfGraphic& rVCOfGraphic = static_cast< const ViewContactOfGraphic& >(GetViewContact());
280 :
281 92 : if(rVCOfGraphic.visualisationUsesDraft())
282 : {
283 0 : const ObjectContact& rObjectContact = GetObjectContact();
284 :
285 0 : if(rObjectContact.isOutputToPDFFile() || rObjectContact.isOutputToPrinter())
286 : {
287 0 : xRetval = drawinglayer::primitive2d::Primitive2DSequence();
288 : }
289 : }
290 : }
291 :
292 : // if swap in was forced only for printing metafile and pdf, swap out again
293 92 : if( bSwapInDone && bSwapInExclusive )
294 : {
295 0 : rGrafObj.ForceSwapOut();
296 : }
297 :
298 92 : return xRetval;
299 : }
300 :
301 92 : ViewObjectContactOfGraphic::ViewObjectContactOfGraphic(ObjectContact& rObjectContact, ViewContact& rViewContact)
302 : : ViewObjectContactOfSdrObj(rObjectContact, rViewContact),
303 92 : mpAsynchLoadEvent(0)
304 : {
305 92 : }
306 :
307 276 : ViewObjectContactOfGraphic::~ViewObjectContactOfGraphic()
308 : {
309 : // evtl. delete the asynch loading event
310 92 : if(mpAsynchLoadEvent)
311 : {
312 : // just delete it, this will remove it from the EventHandler and
313 : // will trigger forgetAsynchGraphicLoadingEvent from the destructor
314 0 : delete mpAsynchLoadEvent;
315 : }
316 184 : }
317 : } // end of namespace contact
318 : } // end of namespace sdr
319 :
320 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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