comparison: src/MessageLog.cc
src/MessageLog.cc
- changeset 629
- b75c6cce02e2
- child 632
- 63e6243b880c
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| 628:6b13e4c2e97b | 629:b75c6cce02e2 |
|---|---|
| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2013, 2014 Santeri Piippo | |
| 4 * | |
| 5 * This program is free software: you can redistribute it and/or modify | |
| 6 * it under the terms of the GNU General Public License as published by | |
| 7 * the Free Software Foundation, either version 3 of the License, or | |
| 8 * (at your option) any later version. | |
| 9 * | |
| 10 * This program is distributed in the hope that it will be useful, | |
| 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 * GNU General Public License for more details. | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License | |
| 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 17 */ | |
| 18 | |
| 19 #include <QTimer> | |
| 20 #include <QDate> | |
| 21 #include "MessageLog.h" | |
| 22 #include "GLRenderer.h" | |
| 23 #include "MainWindow.h" | |
| 24 #include "moc_MessageLog.cpp" | |
| 25 | |
| 26 static const int g_maxMessages = 5; | |
| 27 static const int g_expiry = 5; | |
| 28 static const int g_fadeTime = 500; // msecs | |
| 29 | |
| 30 // ============================================================================= | |
| 31 // ----------------------------------------------------------------------------- | |
| 32 MessageManager::MessageManager (QObject* parent) : | |
| 33 QObject (parent) | |
| 34 { | |
| 35 m_ticker = new QTimer; | |
| 36 m_ticker->start (100); | |
| 37 connect (m_ticker, SIGNAL (timeout()), this, SLOT (tick())); | |
| 38 } | |
| 39 | |
| 40 // ============================================================================= | |
| 41 // ----------------------------------------------------------------------------- | |
| 42 MessageManager::Line::Line (QString text) : | |
| 43 text (text), | |
| 44 alpha (1.0f), | |
| 45 expiry (QDateTime::currentDateTime().addSecs (g_expiry)) {} | |
| 46 | |
| 47 // ============================================================================= | |
| 48 // Check this line's expiry and update alpha accordingly. Returns true if the | |
| 49 // line is to still stick around, false if it expired. 'changed' is updated to | |
| 50 // whether the line has somehow changed since the last update. | |
| 51 // ----------------------------------------------------------------------------- | |
| 52 bool MessageManager::Line::update (bool& changed) | |
| 53 { | |
| 54 changed = false; | |
| 55 QDateTime now = QDateTime::currentDateTime(); | |
| 56 int msec = now.msecsTo (expiry); | |
| 57 | |
| 58 if (now >= expiry) | |
| 59 { | |
| 60 // Message line has expired | |
| 61 changed = true; | |
| 62 return false; | |
| 63 } | |
| 64 | |
| 65 if (msec <= g_fadeTime) | |
| 66 { | |
| 67 // Message line has not expired but is fading out | |
| 68 alpha = ( (float) msec) / g_fadeTime; | |
| 69 changed = true; | |
| 70 } | |
| 71 | |
| 72 return true; | |
| 73 } | |
| 74 | |
| 75 // ============================================================================= | |
| 76 // Add a line to the message manager. | |
| 77 // ----------------------------------------------------------------------------- | |
| 78 void MessageManager::addLine (QString line) | |
| 79 { | |
| 80 // If there's too many entries, pop the excess out | |
| 81 while (m_lines.size() >= g_maxMessages) | |
| 82 m_lines.removeFirst(); | |
| 83 | |
| 84 m_lines << Line (line); | |
| 85 | |
| 86 // Update the renderer view | |
| 87 if (getRenderer()) | |
| 88 getRenderer()->update(); | |
| 89 } | |
| 90 | |
| 91 // ============================================================================= | |
| 92 // Ticks the message manager. All lines are ticked and the renderer scene is | |
| 93 // redrawn if something changed. | |
| 94 // ----------------------------------------------------------------------------- | |
| 95 void MessageManager::tick() | |
| 96 { | |
| 97 if (m_lines.isEmpty()) | |
| 98 return; | |
| 99 | |
| 100 bool changed = false; | |
| 101 | |
| 102 for (int i = 0; i < m_lines.size(); ++i) | |
| 103 { | |
| 104 bool lineChanged; | |
| 105 | |
| 106 if (!m_lines[i].update (lineChanged)) | |
| 107 m_lines.removeAt (i--); | |
| 108 | |
| 109 changed |= lineChanged; | |
| 110 } | |
| 111 | |
| 112 if (changed && getRenderer()) | |
| 113 getRenderer()->update(); | |
| 114 } | |
| 115 | |
| 116 // ============================================================================= | |
| 117 // ----------------------------------------------------------------------------- | |
| 118 const QList<MessageManager::Line>& MessageManager::getLines() const | |
| 119 { | |
| 120 return m_lines; | |
| 121 } | |
| 122 | |
| 123 // ============================================================================= | |
| 124 // log() interface - format the argument list and add the resulting string to | |
| 125 // the main message manager. | |
| 126 // ----------------------------------------------------------------------------- | |
| 127 void DoLog (std::initializer_list<StringFormatArg> args) | |
| 128 { | |
| 129 const QString msg = DoFormat (args); | |
| 130 | |
| 131 for (QString& a : msg.split ("\n", QString::SkipEmptyParts)) | |
| 132 { | |
| 133 if (g_win) | |
| 134 g_win->addMessage (a); | |
| 135 | |
| 136 // Also print it to stdout | |
| 137 fprint (stdout, "%1\n", a); | |
| 138 } | |
| 139 } |
