1 /**************************************************************
2 *
3 * Licensed to the Apache Software Foundation (ASF) under one
4 * or more contributor license agreements. See the NOTICE file
5 * distributed with this work for additional information
6 * regarding copyright ownership. The ASF licenses this file
7 * to you under the Apache License, Version 2.0 (the
8 * "License"); you may not use this file except in compliance
9 * with the License. You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing,
14 * software distributed under the License is distributed on an
15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16 * KIND, either express or implied. See the License for the
17 * specific language governing permissions and limitations
18 * under the License.
19 *
20 *************************************************************/
21
22
23
24 #include "precompiled_sd.hxx"
25
26 #include "CanvasUpdateRequester.hxx"
27 #include <vcl/svapp.hxx>
28 #include <com/sun/star/lang/XComponent.hpp>
29
30 using namespace ::com::sun::star;
31 using namespace ::com::sun::star::uno;
32 using ::rtl::OUString;
33
34 namespace sd { namespace presenter {
35
36 //===== CanvasUpdateRequester::Deleter ========================================
37
38 class CanvasUpdateRequester::Deleter
39 {
40 public:
operator ()(CanvasUpdateRequester * pObject)41 void operator() (CanvasUpdateRequester* pObject) { delete pObject; }
42 };
43
44
45
46
47 //===== CanvasUpdateRequester =================================================
48
49 CanvasUpdateRequester::RequesterMap CanvasUpdateRequester::maRequesterMap;
50
Instance(const Reference<rendering::XSpriteCanvas> & rxSharedCanvas)51 ::boost::shared_ptr<CanvasUpdateRequester> CanvasUpdateRequester::Instance (
52 const Reference<rendering::XSpriteCanvas>& rxSharedCanvas)
53 {
54 RequesterMap::const_iterator iRequester;
55 for (iRequester=maRequesterMap.begin(); iRequester!=maRequesterMap.end(); ++iRequester)
56 {
57 if (iRequester->first == rxSharedCanvas)
58 return iRequester->second;
59 }
60
61 // No requester for the given canvas found. Create a new one.
62 ::boost::shared_ptr<CanvasUpdateRequester> pRequester (
63 new CanvasUpdateRequester(rxSharedCanvas), Deleter());
64 maRequesterMap.push_back(RequesterMap::value_type(rxSharedCanvas,pRequester));
65 return pRequester;
66 }
67
68
69
70
CanvasUpdateRequester(const Reference<rendering::XSpriteCanvas> & rxCanvas)71 CanvasUpdateRequester::CanvasUpdateRequester (
72 const Reference<rendering::XSpriteCanvas>& rxCanvas)
73 : mxCanvas(rxCanvas),
74 mnUserEventId(0),
75 mbUpdateFlag(sal_False)
76 {
77 Reference<lang::XComponent> xComponent (mxCanvas, UNO_QUERY);
78 if (xComponent.is())
79 {
80 //xComponent->addEventListener(this);
81 }
82 }
83
84
85
86
~CanvasUpdateRequester(void)87 CanvasUpdateRequester::~CanvasUpdateRequester (void)
88 {
89 if (mnUserEventId != 0)
90 Application::RemoveUserEvent(mnUserEventId);
91 }
92
93
94
95
RequestUpdate(const sal_Bool bUpdateAll)96 void CanvasUpdateRequester::RequestUpdate (const sal_Bool bUpdateAll)
97 {
98 if (mnUserEventId == 0)
99 {
100 mbUpdateFlag = bUpdateAll;
101 mnUserEventId = Application::PostUserEvent(LINK(this, CanvasUpdateRequester, Callback));
102 }
103 else
104 {
105 mbUpdateFlag |= bUpdateAll;
106 }
107 }
108
109
110
IMPL_LINK(CanvasUpdateRequester,Callback,void *,EMPTYARG)111 IMPL_LINK(CanvasUpdateRequester, Callback, void*, EMPTYARG)
112 {
113 mnUserEventId = 0;
114 if (mxCanvas.is())
115 {
116 mxCanvas->updateScreen(mbUpdateFlag);
117 mbUpdateFlag = sal_False;
118 }
119 return 0;
120 }
121
122
123 } } // end of namespace ::sd::presenter
124