File indexing completed on 2025-02-02 10:58:40
0001 /* 0002 Large image displaying library. 0003 0004 Copyright (C) 2004 Maks Orlovich (maksim@kde.org) 0005 0006 Permission is hereby granted, free of charge, to any person obtaining a copy 0007 of this software and associated documentation files (the "Software"), to deal 0008 in the Software without restriction, including without limitation the rights 0009 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 0010 copies of the Software, and to permit persons to whom the Software is 0011 furnished to do so, subject to the following conditions: 0012 0013 The above copyright notice and this permission notice shall be included in 0014 all copies or substantial portions of the Software. 0015 0016 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 0017 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 0018 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 0019 AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN 0020 AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 0021 CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 0022 0023 */ 0024 0025 #include "updater.h" 0026 0027 #include <assert.h> 0028 0029 #include <QTimer> 0030 #include "image.h" 0031 0032 namespace khtmlImLoad 0033 { 0034 0035 /** 0036 We keep 10 separate tables for each of ten 100ms portions of a second. 0037 Each entry is scheduled to be delivered 5 slots ahead 0038 */ 0039 0040 Updater::Updater() 0041 { 0042 timePortion = 0; 0043 0044 updatePusher = new QTimer(this); 0045 connect(updatePusher, SIGNAL(timeout()), 0046 this, SLOT(pushUpdates())); 0047 } 0048 0049 void Updater::haveUpdates(Image *frame) 0050 { 0051 assert(frame); 0052 int schedulePortion = (timePortion + 1) % 10; 0053 frames[schedulePortion].append(frame); 0054 if (!updatePusher->isActive()) { 0055 updatePusher->start(100); 0056 } 0057 } 0058 0059 bool Updater::updatesPending() 0060 { 0061 for (int i = 0; i < 10; ++i) 0062 if (!frames[i].isEmpty()) { 0063 return true; 0064 } 0065 0066 return false; 0067 } 0068 0069 void Updater::destroyed(Image *frame) 0070 { 0071 for (int i = 0; i < 10; ++i) { 0072 int pos = frames[i].indexOf(frame); 0073 if (pos != -1) { 0074 frames[i].remove(pos); 0075 } 0076 } 0077 0078 if (!updatesPending()) { 0079 updatePusher->stop(); 0080 } 0081 } 0082 0083 void Updater::pushUpdates() 0084 { 0085 timePortion++; 0086 if (timePortion >= 10) { 0087 timePortion = 0; 0088 } 0089 0090 //Notify all images for the given slice. 0091 QVector<Image *>::const_iterator iter; 0092 for (iter = frames[timePortion].constBegin(); 0093 iter != frames[timePortion].constEnd(); ++iter) { 0094 (*iter)->notifyPerformUpdate(); 0095 } 0096 0097 //Dump the contents of the table, everything delivered 0098 frames[timePortion].clear(); 0099 0100 if (!updatesPending()) { 0101 updatePusher->stop(); 0102 } 0103 } 0104 0105 } 0106 0107 #include "moc_updater.cpp"