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269
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1 /****************************************************************************
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2 **
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
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4 ** Contact: Nokia Corporation (qt-info@nokia.com)
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5 **
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6 ** This file is part of the examples of the Qt Toolkit.
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7 **
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8 ** $QT_BEGIN_LICENSE:LGPL$
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9 ** Commercial Usage
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10 ** Licensees holding valid Qt Commercial licenses may use this file in
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11 ** accordance with the Qt Commercial License Agreement provided with the
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12 ** Software or, alternatively, in accordance with the terms contained in
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13 ** a written agreement between you and Nokia.
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14 **
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15 ** GNU Lesser General Public License Usage
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16 ** Alternatively, this file may be used under the terms of the GNU Lesser
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17 ** General Public License version 2.1 as published by the Free Software
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18 ** Foundation and appearing in the file LICENSE.LGPL included in the
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19 ** packaging of this file. Please review the following information to
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20 ** ensure the GNU Lesser General Public License version 2.1 requirements
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21 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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22 **
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23 ** In addition, as a special exception, Nokia gives you certain
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24 ** additional rights. These rights are described in the Nokia Qt LGPL
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25 ** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
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26 ** package.
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27 **
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28 ** GNU General Public License Usage
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29 ** Alternatively, this file may be used under the terms of the GNU
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30 ** General Public License version 3.0 as published by the Free Software
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31 ** Foundation and appearing in the file LICENSE.GPL included in the
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32 ** packaging of this file. Please review the following information to
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33 ** ensure the GNU General Public License version 3.0 requirements will be
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34 ** met: http://www.gnu.org/copyleft/gpl.html.
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35 **
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36 ** If you are unsure which license is appropriate for your use, please
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37 ** contact the sales department at http://www.qtsoftware.com/contact.
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38 ** $QT_END_LICENSE$
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39 **
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40 ****************************************************************************/
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41
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42 /****************************************************************************
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43 **
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44 ** Translated from Qt/C++ to QtD/D by Jason Addison
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45 ** Date: 2009 09 13
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46 ** Contact: jraddison@gmail.com
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47 **
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48 ****************************************************************************/
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49
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50
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51 import qt.gui.QMainWindow;
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52 import qt.gui.QAction;
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53 import qt.gui.QMenu;
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54 import qt.gui.QTextEdit;
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55 import qt.gui.QFileDialog;
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56 import qt.gui.QMessageBox;
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57 import qt.core.QSettings;
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58 import qt.core.QTextStream;
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59
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60 version(Tango)
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61 {
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62 import tango.text.Util;
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63 import Int = tango.text.convert.Integer;
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64 }
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65 else
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66 {
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67 import std.string;
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68 import std.conv;
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69 }
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70 class MainWindow : public QMainWindow
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71 {
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72 // Q_OBJECT
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73
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74 public:
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75 this()
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76 {
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77 init();
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78 setCurrentFile("");
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79 }
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80
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81 this(string fileName)
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82 {
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83 init();
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84 loadFile(fileName);
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85 }
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86
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87 protected:
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88
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89 void closeEvent(QCloseEvent event)
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90 {
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91 if (maybeSave()) {
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92 writeSettings();
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93 event.accept();
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94 } else {
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95 event.ignore();
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96 }
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97 }
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98
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99 private: // slots
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100
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101 void newFile()
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102 {
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103 MainWindow other = new MainWindow;
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104 other.move(x() + 40, y() + 40);
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105 other.show();
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106 }
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107
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108 void open()
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109 {
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110 scope fileName = QFileDialog.getOpenFileName(this);
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111 if (fileName) {
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112 MainWindow existing = findMainWindow(fileName);
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113 if (existing) {
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114 existing.show();
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115 existing.raise();
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116 existing.activateWindow();
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117 return;
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118 }
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119 if (isUntitled && textEdit.document().isEmpty()
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120 && !isWindowModified()) {
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121 loadFile(fileName);
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122 } else {
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123 MainWindow other = new MainWindow(fileName);
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124 if (other.isUntitled) {
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125 delete other;
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126 return;
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127 }
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128 other.move(x() + 40, y() + 40);
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129 other.show();
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130 }
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131 }
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132 }
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133
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134 bool save()
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135 {
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136 if (isUntitled) {
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137 return saveAs();
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138 } else {
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139 return saveFile(curFile);
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140 }
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141 }
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142
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143 bool saveAs()
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144 {
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145 string fileName = QFileDialog.getSaveFileName(this, tr("Save As"),
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146 curFile);
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147 if (!fileName)
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148 return false;
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149
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150 return saveFile(fileName);
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151 }
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152
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153 void about()
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154 {
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155 QMessageBox.about(this, tr("About SDI"),
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156 tr("The <b>SDI</b> example demonstrates how to write single " ~
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157 "document interface applications using Qt."));
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158 }
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159
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160 void documentWasModified()
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161 {
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162 setWindowModified(true);
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163 }
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164
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165 private:
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166
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167 void init()
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168 {
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169 setAttribute(Qt.WA_DeleteOnClose);
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170
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171 isUntitled = true;
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172
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173 textEdit = new QTextEdit;
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174 setCentralWidget(textEdit);
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175
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176 createActions();
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177 createMenus();
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178 createToolBars();
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179 createStatusBar();
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180
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181 readSettings();
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182
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183 textEdit.document().contentsChanged.connect(&this.documentWasModified);
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184
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185 setUnifiedTitleAndToolBarOnMac(true);
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186 }
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187
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188 void createActions()
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189 {
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190 newAct = new QAction(new QIcon(":/images/new.png"), tr("&New"), this);
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191 newAct.setShortcuts(QKeySequence.New);
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192 newAct.setStatusTip(tr("Create a new file"));
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193 newAct.triggered.connect(&this.newFile);
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194
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195 openAct = new QAction(new QIcon(":/images/open.png"), tr("&Open..."), this);
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196 openAct.setShortcuts(QKeySequence.Open);
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197 openAct.setStatusTip(tr("Open an existing file"));
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198 openAct.triggered.connect(&this.open);
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199
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200 saveAct = new QAction(new QIcon(":/images/save.png"), tr("&Save"), this);
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201 saveAct.setShortcuts(QKeySequence.Save);
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202 saveAct.setStatusTip(tr("Save the document to disk"));
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203 saveAct.triggered.connect(&this.save);
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204
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205 saveAsAct = new QAction(tr("Save &As..."), this);
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206 saveAsAct.setShortcuts(QKeySequence.SaveAs);
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207 saveAsAct.setStatusTip(tr("Save the document under a new name"));
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208 saveAsAct.triggered.connect(&this.saveAs);
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209
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210 closeAct = new QAction(tr("&Close"), this);
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211 closeAct.setShortcut(tr("Ctrl+W"));
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212 closeAct.setStatusTip(tr("Close this window"));
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213 closeAct.triggered.connect(&this.close);
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214
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215 exitAct = new QAction(tr("E&xit"), this);
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216 exitAct.setShortcut(tr("Ctrl+Q"));
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217 exitAct.setStatusTip(tr("Exit the application"));
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218 exitAct.triggered.connect(&QApplication.closeAllWindows);
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219
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220 cutAct = new QAction(new QIcon(":/images/cut.png"), tr("Cu&t"), this);
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221 cutAct.setShortcuts(QKeySequence.Cut);
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222 cutAct.setStatusTip(tr("Cut the current selection's contents to the " ~
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223 "clipboard"));
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224 cutAct.triggered.connect(&textEdit.cut);
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225
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226 copyAct = new QAction(new QIcon(":/images/copy.png"), tr("&Copy"), this);
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227 copyAct.setShortcuts(QKeySequence.Copy);
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228 copyAct.setStatusTip(tr("Copy the current selection's contents to the " ~
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229 "clipboard"));
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230 copyAct.triggered.connect(&textEdit.copy);
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231
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232 pasteAct = new QAction(new QIcon(":/images/paste.png"), tr("&Paste"), this);
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233 pasteAct.setShortcuts(QKeySequence.Paste);
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234 pasteAct.setStatusTip(tr("Paste the clipboard's contents into the current " ~
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235 "selection"));
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236 pasteAct.triggered.connect(&textEdit.paste);
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237
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238 aboutAct = new QAction(tr("&About"), this);
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239 aboutAct.setStatusTip(tr("Show the application's About box"));
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240 aboutAct.triggered.connect(&this.about);
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241
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242 aboutQtAct = new QAction(tr("About &Qt"), this);
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243 aboutQtAct.setStatusTip(tr("Show the Qt library's About box"));
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244 aboutQtAct.triggered.connect(&QApplication.aboutQt);
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245
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246 cutAct.setEnabled(false);
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247 copyAct.setEnabled(false);
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248
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249 // QtD bug????
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250 // only one of the following statements can be included
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251 // otherwise the app crashes when a MainWindow is closeda
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278
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252 textEdit.copyAvailable.connect(&cutAct.setEnabled);
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269
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253 textEdit.copyAvailable.connect(©Act.setEnabled);
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254 }
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255
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256 void createMenus()
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257 {
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258 fileMenu = menuBar.addMenu(tr("&File"));
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259 fileMenu.addAction(newAct);
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260 fileMenu.addAction(openAct);
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261 fileMenu.addAction(saveAct);
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262 fileMenu.addAction(saveAsAct);
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263 fileMenu.addSeparator();
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264 fileMenu.addAction(closeAct);
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265 fileMenu.addAction(exitAct);
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266
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267 editMenu = menuBar.addMenu(tr("&Edit"));
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268 editMenu.addAction(cutAct);
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269 editMenu.addAction(copyAct);
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270 editMenu.addAction(pasteAct);
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271
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272 menuBar().addSeparator();
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273
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274 helpMenu = menuBar.addMenu(tr("&Help"));
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275 helpMenu.addAction(aboutAct);
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276 helpMenu.addAction(aboutQtAct);
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277 }
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278
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279 void createToolBars()
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280 {
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281 fileToolBar = addToolBar(tr("File"));
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282 fileToolBar.addAction(newAct);
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283 fileToolBar.addAction(openAct);
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284 fileToolBar.addAction(saveAct);
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285
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286 editToolBar = addToolBar(tr("Edit"));
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287 editToolBar.addAction(cutAct);
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288 editToolBar.addAction(copyAct);
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289 editToolBar.addAction(pasteAct);
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290 }
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291
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292 void createStatusBar()
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293 {
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294 statusBar.showMessage(tr("Ready"));
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295 }
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296
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297 void readSettings()
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298 {
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299 scope QSettings settings = new QSettings("Trolltech", "SDI Example");
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300 scope QPoint pos = settings.value("pos", new QVariant(QPoint(200, 200))).toPoint();
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301 scope QSize size = settings.value("size", new QVariant(QSize(400, 400))).toSize();
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302 move(pos);
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303 resize(size);
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304 }
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305
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306 void writeSettings()
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307 {
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308 QSettings settings = new QSettings("Trolltech", "SDI Example");
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309 settings.setValue("pos", new QVariant(pos()));
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310 settings.setValue("size", new QVariant(size()));
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311 }
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312
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313 bool maybeSave()
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314 {
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315 if (textEdit.document().isModified()) {
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316 QMessageBox.StandardButton ret;
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317 ret = QMessageBox.warning(this, tr("SDI"),
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318 tr("The document has been modified.\n" ~
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319 "Do you want to save your changes?"),
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320 QMessageBox.Save | QMessageBox.Discard
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321 | QMessageBox.Cancel);
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322 if (ret == QMessageBox.Save)
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323 return save();
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324 else if (ret == QMessageBox.Cancel)
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325 return false;
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326 }
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327 return true;
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328 }
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329
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330 void loadFile(string fileName)
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331 {
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332 scope file = new QFile(fileName);
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333 if (!file.open(QFile.ReadOnly | QFile.Text)) {
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334 QMessageBox.warning(this, tr("SDI"),
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335 tr("Cannot read file " ~
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336 fileName ~ ":\n" ~
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337 file.errorString ~ "."));
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338 return;
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339 }
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340
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341 scope inStream = new QTextStream(file);
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342 QApplication.setOverrideCursor(new QCursor(Qt.WaitCursor));
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343 textEdit.setPlainText(inStream.readAll());
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344 QApplication.restoreOverrideCursor();
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345
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346 setCurrentFile(fileName);
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347 statusBar.showMessage(tr("File loaded"), 2000);
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348 }
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349
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350 bool saveFile(string fileName)
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351 {
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352 scope file = new QFile(fileName);
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353 if (!file.open(QFile.WriteOnly | QFile.Text)) {
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354 QMessageBox.warning(this, tr("SDI"),
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355 tr("Cannot write file " ~
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356 fileName ~ ":\n" ~
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357 file.errorString ~ "."));
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358 return false;
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359 }
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360
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361 scope outStream = new QTextStream(file);
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362 QApplication.setOverrideCursor(new QCursor(Qt.WaitCursor));
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363 outStream.writeString(textEdit.toPlainText());
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364 QApplication.restoreOverrideCursor();
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365
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366 setCurrentFile(fileName);
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367 statusBar.showMessage("Saved '" ~ fileName ~ "'", 2000);
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368 return true;
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369 }
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370
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371 void setCurrentFile(string fileName)
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372 {
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373 static int sequenceNumber = 1;
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374
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375 isUntitled = fileName == null;
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376 if (isUntitled) {
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377 version(Tango)
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378 curFile = tr("document" ~ Int.toString(sequenceNumber++) ~ ".txt");
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379 else
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380 curFile = tr("document" ~ to!(string)(sequenceNumber++) ~ ".txt");
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381 } else {
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382 scope qfi = new QFileInfo(fileName);
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383 curFile = qfi.canonicalFilePath;
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384 }
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385
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386 textEdit.document().setModified(false);
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387 setWindowModified(false);
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388
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389 setWindowTitle(strippedName(curFile) ~ "[*] - " ~ tr("SDI"));
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390 }
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391
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392 string strippedName(string fullFileName)
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393 {
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394 scope qfi = new QFileInfo(fullFileName);
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395 return qfi.fileName();
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396 }
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397
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398 MainWindow findMainWindow(string fileName)
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399 {
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400 scope qfi = new QFileInfo(fileName);
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401 string canonicalFilePath = qfi.canonicalFilePath();
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402
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403 foreach (QWidget widget; QApplication.topLevelWidgets) {
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404 MainWindow mainWin = cast(MainWindow)(widget);
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405 if (mainWin && mainWin.curFile == canonicalFilePath)
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406 return mainWin;
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407 }
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408 return null;
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409 }
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410
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411 QTextEdit textEdit;
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412 string curFile;
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413 bool isUntitled;
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414
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415 QMenu fileMenu;
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416 QMenu editMenu;
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417 QMenu helpMenu;
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418 QToolBar fileToolBar;
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419 QToolBar editToolBar;
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420
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421 QAction newAct;
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422 QAction openAct;
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423 QAction saveAct;
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424 QAction saveAsAct;
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425 QAction closeAct;
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426 QAction exitAct;
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427 QAction cutAct;
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428 QAction copyAct;
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429 QAction pasteAct;
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430 QAction aboutAct;
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431 QAction aboutQtAct;
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432 };
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