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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 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the tools module of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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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 #include "qvfbx11view.h" |
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43 #include "x11keyfaker.h" |
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44 #include <qevent.h> |
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45 #include <QX11Info> |
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46 #include <QTimer> |
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47 #include <QProcess> |
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48 #include <QDebug> |
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49 #include <QUuid> |
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50 #include <QDataStream> |
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51 #include <QTemporaryFile> |
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52 #include <X11/Xlib.h> |
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53 |
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54 QT_BEGIN_NAMESPACE |
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55 |
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56 QVFbX11View::QVFbX11View |
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57 (int id, int w, int h, int d, Rotation r, QWidget *parent) |
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58 : QVFbAbstractView(parent) |
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59 { |
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60 this->id = id; |
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61 this->w = w; |
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62 this->h = h; |
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63 this->d = d; |
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64 this->rotation = r; |
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65 this->gr = 1.0; |
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66 this->gg = 1.0; |
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67 this->gb = 1.0; |
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68 this->touchscreen = false; |
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69 this->lcd = false; |
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70 this->keyFaker = 0; |
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71 this->xnest = 0; |
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72 this->serverAuthFile = 0; |
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73 this->shutdown = false; |
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74 |
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75 // Try to find Xephyr, as it is better than Xnest in many ways. |
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76 if (QFile::exists("/usr/bin/Xephyr")) |
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77 xserver = "/usr/bin/Xephyr"; |
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78 else if (QFile::exists("/usr/local/bin/Xephyr")) |
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79 xserver = "/usr/local/bin/Xephyr"; |
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80 else if (QFile::exists("/usr/X11R6/bin/Xephyr")) |
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81 xserver = "/usr/X11R6/bin/Xephyr"; |
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82 else |
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83 xserver = "Xnest"; |
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84 } |
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85 |
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86 QVFbX11View::~QVFbX11View() |
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87 { |
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88 shutdown = true; |
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89 if (xnest) { |
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90 xnest->terminate(); |
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91 xnestStopped(); |
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92 } |
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93 } |
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94 |
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95 int QVFbX11View::displayId() const |
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96 { |
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97 return id; |
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98 } |
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99 |
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100 int QVFbX11View::displayWidth() const |
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101 { |
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102 return ( (int)rotation & 0x01 ) ? h : w; |
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103 } |
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104 |
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105 int QVFbX11View::displayHeight() const |
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106 { |
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107 return ( (int)rotation & 0x01 ) ? w : h; |
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108 } |
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109 |
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110 int QVFbX11View::displayDepth() const |
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111 { |
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112 return d; |
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113 } |
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114 |
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115 QVFbX11View::Rotation QVFbX11View::displayRotation() const |
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116 { |
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117 return rotation; |
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118 } |
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119 |
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120 void QVFbX11View::skinKeyPressEvent(int code, const QString&, bool) |
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121 { |
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122 if (keyFaker) |
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123 keyFaker->sendKeyEvent(code, true); |
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124 } |
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125 |
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126 void QVFbX11View::skinKeyReleaseEvent(int code, const QString&, bool) |
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127 { |
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128 if (keyFaker) |
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129 keyFaker->sendKeyEvent(code, false); |
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130 } |
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131 |
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132 void QVFbX11View::setGamma(double gr, double gg, double gb) |
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133 { |
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134 // We remember the values, but don't do anything with them. |
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135 this->gr = gr; |
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136 this->gg = gg; |
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137 this->gb = gb; |
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138 } |
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139 |
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140 double QVFbX11View::gammaRed() const |
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141 { |
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142 return gr; |
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143 } |
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144 |
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145 double QVFbX11View::gammaGreen() const |
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146 { |
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147 return gg; |
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148 } |
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149 |
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150 double QVFbX11View::gammaBlue() const |
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151 { |
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152 return gb; |
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153 } |
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154 |
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155 void QVFbX11View::getGamma(int, QRgb& rgb) |
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156 { |
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157 rgb = qRgb(255, 255, 255); |
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158 } |
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159 |
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160 bool QVFbX11View::touchScreenEmulation() const |
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161 { |
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162 return touchscreen; |
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163 } |
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164 |
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165 bool QVFbX11View::lcdScreenEmulation() const |
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166 { |
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167 return lcd; |
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168 } |
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169 |
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170 int QVFbX11View::rate() |
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171 { |
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172 // We don't support refresh rates, so return a default value. |
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173 return 30; |
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174 } |
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175 |
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176 bool QVFbX11View::animating() const |
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177 { |
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178 // We don't support animation. |
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179 return false; |
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180 } |
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181 |
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182 QImage QVFbX11View::image() const |
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183 { |
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184 // We don't support image capture. |
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185 return QImage(); |
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186 } |
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187 |
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188 void QVFbX11View::setRate(int) |
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189 { |
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190 // We don't support rate adjustments. |
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191 } |
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192 |
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193 |
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194 double QVFbX11View::zoomH() const |
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195 { |
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196 // Zoom is not possible with Xnest. |
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197 return 1.0; |
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198 } |
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199 |
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200 double QVFbX11View::zoomV() const |
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201 { |
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202 // Zoom is not possible with Xnest. |
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203 return 1.0; |
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204 } |
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205 |
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206 QSize QVFbX11View::sizeHint() const |
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207 { |
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208 return QSize(w, h); |
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209 } |
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210 |
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211 void QVFbX11View::setTouchscreenEmulation( bool flag ) |
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212 { |
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213 touchscreen = flag; |
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214 } |
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215 |
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216 void QVFbX11View::setLcdScreenEmulation( bool flag ) |
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217 { |
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218 lcd = flag; |
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219 } |
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220 |
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221 void QVFbX11View::setZoom( double, double ) |
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222 { |
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223 // Zoom is not possible with Xnest. |
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224 } |
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225 |
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226 void QVFbX11View::setRotation( Rotation ) |
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227 { |
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228 // Rotation is not possible with Xnest. |
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229 } |
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230 |
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231 void QVFbX11View::startAnimation( const QString& ) |
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232 { |
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233 // Animation is not supported. |
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234 } |
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235 |
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236 void QVFbX11View::stopAnimation() |
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237 { |
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238 // Animation is not supported. |
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239 } |
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240 |
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241 // Generate a 16-byte magic cookie string. |
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242 static QString generateMagicCookie() |
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243 { |
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244 static const char hexchars[] = "0123456789abcdef"; |
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245 QUuid uuid = QUuid::createUuid(); |
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246 QByteArray ba; |
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247 QDataStream stream(&ba, QIODevice::WriteOnly); |
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248 stream << uuid; |
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249 QString value; |
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250 foreach ( char ch, ba ) { |
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251 value += QChar( hexchars[(ch >> 4) & 0x0F] ); |
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252 value += QChar( hexchars[ch & 0x0F] ); |
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253 } |
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254 return value; |
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255 } |
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256 |
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257 void QVFbX11View::showEvent(QShowEvent *e) |
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258 { |
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259 if (!xnest) |
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260 startXnest(); |
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261 QWidget::showEvent(e); |
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262 } |
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263 |
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264 void QVFbX11View::keyPressEvent(QKeyEvent *e) |
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265 { |
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266 if (keyFaker) |
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267 keyFaker->sendKeyEvent(e->key(), true); |
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268 QWidget::keyPressEvent(e); |
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269 } |
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270 |
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271 void QVFbX11View::keyReleaseEvent(QKeyEvent *e) |
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272 { |
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273 if (keyFaker) |
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274 keyFaker->sendKeyEvent(e->key(), false); |
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275 QWidget::keyReleaseEvent(e); |
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276 } |
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277 |
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278 void QVFbX11View::startXnest() |
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279 { |
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280 // Add authentication credentials to the XAUTHORITY file. |
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281 QString cookie = generateMagicCookie(); |
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282 QStringList xauthargs; |
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283 xauthargs += "add"; |
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284 xauthargs += ":" + QString::number(displayId()); |
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285 xauthargs += "MIT-MAGIC-COOKIE-1"; |
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286 xauthargs += cookie; |
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287 if (QProcess::execute("xauth", xauthargs) != 0) |
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288 qWarning() << "xauth: failed to add Xnest client authentication credentials"; |
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289 |
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290 // Write the credentials to another authentication file for the server. |
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291 serverAuthFile = new QTemporaryFile(this); |
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292 QString authFilename; |
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293 if (serverAuthFile->open()) { |
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294 authFilename = serverAuthFile->fileName(); |
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295 serverAuthFile->close(); |
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296 xauthargs.clear(); |
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297 xauthargs += "-f"; |
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298 xauthargs += authFilename; |
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299 xauthargs += "add"; |
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300 xauthargs += ":" + QString::number(displayId()); |
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301 xauthargs += "MIT-MAGIC-COOKIE-1"; |
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302 xauthargs += cookie; |
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303 if (QProcess::execute("xauth", xauthargs) != 0) |
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304 qWarning() << "xauth: failed to add Xnest server authentication credentials"; |
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305 } |
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306 |
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307 // Create a raw X11 window to act as the Xnest's root window. |
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308 // We cannot use winId() directly because qvfb is already |
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309 // selecting for events that Xnest wants to select for. |
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310 WId root = XCreateSimpleWindow |
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311 (QX11Info::display(), winId(), 0, 0, w, h, 0, |
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312 BlackPixel(QX11Info::display(), QX11Info::appScreen()), |
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313 BlackPixel(QX11Info::display(), QX11Info::appScreen())); |
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314 XMapWindow(QX11Info::display(), root); |
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315 |
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316 // Warn the user if the visual number looks wrong. Xnest expects |
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317 // its root window to be on the default visual. |
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318 if (QX11Info::appVisual() != DefaultVisual(QX11Info::display(), QX11Info::appScreen())) { |
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319 qWarning() << "*** Qt is not using the default visual. Xnest may fail " |
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320 "with a BadMatch error."; |
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321 qWarning() << "*** If it fails, then restart qvfb with \" -visual" |
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322 << DefaultVisual(QX11Info::display(), QX11Info::appScreen()) |
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323 ->visualid << "\""; |
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324 } |
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325 |
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326 // Make sure the root window is in the X server before Xnest starts. |
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327 XSync(QX11Info::display(), False); |
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328 |
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329 // Start the Xnest process. |
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330 xnest = new QProcess(this); |
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331 connect(xnest, SIGNAL(error(QProcess::ProcessError)), |
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332 this, SLOT(xnestStopped())); |
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333 connect(xnest, SIGNAL(finished(int,QProcess::ExitStatus)), |
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334 this, SLOT(xnestStopped())); |
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335 QStringList args; |
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336 args += "-auth"; |
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337 args += authFilename; |
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338 if (!xserver.contains("Xephyr")) { |
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339 args += "-geometry"; |
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340 args += QString::number(w) + "x" + QString::number(h) + "+0+0"; |
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341 args += "-depth"; |
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342 args += QString::number(d); |
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343 } |
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344 args += "-br"; // Start Xnest with a black background. |
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345 args += "-parent"; |
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346 args += "0x" + QString::number(root, 16); |
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347 args += ":" + QString::number(displayId()); |
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348 xnest->setProcessChannelMode(QProcess::ForwardedChannels); |
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349 xnest->start(xserver, args); |
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350 //qDebug() << args; |
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351 |
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352 QTimer::singleShot(200, this, SLOT(startKeyFaker())); |
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353 } |
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354 |
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355 void QVFbX11View::xnestStopped() |
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356 { |
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357 if (!shutdown) { |
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358 if (xnest && xnest->error() == QProcess::FailedToStart) |
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359 qWarning() << xserver << "could not be started"; |
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360 else |
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361 qWarning() << xserver << "stopped unexpectedly"; |
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362 } |
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363 if (keyFaker) { |
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364 delete keyFaker; |
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365 keyFaker = 0; |
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366 } |
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367 if (xnest) { |
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368 xnest->deleteLater(); |
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369 xnest = 0; |
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370 |
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371 QStringList xauthargs; |
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372 xauthargs += "remove"; |
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373 xauthargs += ":" + QString::number(displayId()); |
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374 if (QProcess::execute("xauth", xauthargs) != 0) |
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375 qWarning() << "xauth: failed to remove Xnest authentication credentials"; |
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376 } |
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377 if (serverAuthFile) { |
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378 delete serverAuthFile; |
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379 serverAuthFile = 0; |
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380 } |
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381 } |
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382 |
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383 void QVFbX11View::startKeyFaker() |
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384 { |
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385 if (!keyFaker && xnest) |
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386 keyFaker = new X11KeyFaker(":" + QString::number(displayId()), this); |
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387 } |
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388 |
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389 QT_END_NAMESPACE |