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