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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 examples 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 /**************************************************************************** |
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43 ** |
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44 ** This is a simple QGLWidget displaying an openGL wireframe box |
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45 ** |
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46 ** The OpenGL code is mostly borrowed from Brian Pauls "spin" example |
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47 ** in the Mesa distribution |
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48 ** |
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49 ****************************************************************************/ |
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50 |
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51 #include "glbox.h" |
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52 #include <QAxAggregated> |
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53 #include <QUuid> |
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54 //! [0] |
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55 #include <objsafe.h> |
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56 //! [0] |
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57 |
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58 #if defined(Q_CC_MSVC) |
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59 #pragma warning(disable:4305) // init: truncation from const double to float |
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60 #endif |
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61 |
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62 /*! |
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63 Create a GLBox widget |
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64 */ |
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65 |
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66 GLBox::GLBox( QWidget* parent, const char* name ) |
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67 : QGLWidget( parent ) |
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68 { |
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69 xRot = yRot = zRot = 0.0; // default object rotation |
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70 scale = 1.25; // default object scale |
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71 object = 0; |
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72 } |
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73 |
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74 |
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75 /*! |
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76 Release allocated resources |
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77 */ |
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78 |
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79 GLBox::~GLBox() |
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80 { |
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81 makeCurrent(); |
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82 glDeleteLists( object, 1 ); |
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83 } |
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84 |
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85 |
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86 /*! |
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87 Paint the box. The actual openGL commands for drawing the box are |
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88 performed here. |
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89 */ |
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90 |
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91 void GLBox::paintGL() |
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92 { |
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93 glClear( GL_COLOR_BUFFER_BIT ); |
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94 |
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95 glLoadIdentity(); |
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96 glTranslatef( 0.0, 0.0, -10.0 ); |
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97 glScalef( scale, scale, scale ); |
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98 |
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99 glRotatef( xRot, 1.0, 0.0, 0.0 ); |
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100 glRotatef( yRot, 0.0, 1.0, 0.0 ); |
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101 glRotatef( zRot, 0.0, 0.0, 1.0 ); |
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102 |
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103 glCallList( object ); |
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104 } |
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105 |
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106 |
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107 /*! |
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108 Set up the OpenGL rendering state, and define display list |
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109 */ |
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110 |
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111 void GLBox::initializeGL() |
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112 { |
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113 qglClearColor(Qt::black); // Let OpenGL clear to black |
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114 object = makeObject(); // Generate an OpenGL display list |
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115 glShadeModel( GL_FLAT ); |
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116 } |
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117 |
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118 |
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119 |
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120 /*! |
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121 Set up the OpenGL view port, matrix mode, etc. |
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122 */ |
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123 |
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124 void GLBox::resizeGL( int w, int h ) |
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125 { |
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126 glViewport( 0, 0, (GLint)w, (GLint)h ); |
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127 glMatrixMode( GL_PROJECTION ); |
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128 glLoadIdentity(); |
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129 glFrustum( -1.0, 1.0, -1.0, 1.0, 5.0, 15.0 ); |
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130 glMatrixMode( GL_MODELVIEW ); |
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131 } |
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132 |
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133 |
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134 /*! |
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135 Generate an OpenGL display list for the object to be shown, i.e. the box |
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136 */ |
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137 |
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138 GLuint GLBox::makeObject() |
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139 { |
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140 GLuint list; |
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141 |
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142 list = glGenLists( 1 ); |
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143 |
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144 glNewList( list, GL_COMPILE ); |
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145 |
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146 qglColor(Qt::white); // Shorthand for glColor3f or glIndex |
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147 |
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148 glLineWidth( 2.0 ); |
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149 |
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150 glBegin( GL_LINE_LOOP ); |
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151 glVertex3f( 1.0, 0.5, -0.4 ); |
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152 glVertex3f( 1.0, -0.5, -0.4 ); |
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153 glVertex3f( -1.0, -0.5, -0.4 ); |
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154 glVertex3f( -1.0, 0.5, -0.4 ); |
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155 glEnd(); |
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156 |
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157 glBegin( GL_LINE_LOOP ); |
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158 glVertex3f( 1.0, 0.5, 0.4 ); |
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159 glVertex3f( 1.0, -0.5, 0.4 ); |
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160 glVertex3f( -1.0, -0.5, 0.4 ); |
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161 glVertex3f( -1.0, 0.5, 0.4 ); |
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162 glEnd(); |
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163 |
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164 glBegin( GL_LINES ); |
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165 glVertex3f( 1.0, 0.5, -0.4 ); glVertex3f( 1.0, 0.5, 0.4 ); |
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166 glVertex3f( 1.0, -0.5, -0.4 ); glVertex3f( 1.0, -0.5, 0.4 ); |
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167 glVertex3f( -1.0, -0.5, -0.4 ); glVertex3f( -1.0, -0.5, 0.4 ); |
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168 glVertex3f( -1.0, 0.5, -0.4 ); glVertex3f( -1.0, 0.5, 0.4 ); |
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169 glEnd(); |
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170 |
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171 glEndList(); |
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172 |
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173 return list; |
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174 } |
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175 |
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176 |
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177 /*! |
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178 Set the rotation angle of the object to \e degrees around the X axis. |
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179 */ |
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180 |
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181 void GLBox::setXRotation( int degrees ) |
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182 { |
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183 xRot = (GLfloat)(degrees % 360); |
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184 updateGL(); |
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185 } |
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186 |
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187 |
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188 /*! |
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189 Set the rotation angle of the object to \e degrees around the Y axis. |
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190 */ |
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191 |
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192 void GLBox::setYRotation( int degrees ) |
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193 { |
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194 yRot = (GLfloat)(degrees % 360); |
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195 updateGL(); |
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196 } |
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197 |
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198 |
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199 /*! |
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200 Set the rotation angle of the object to \e degrees around the Z axis. |
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201 */ |
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202 |
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203 void GLBox::setZRotation( int degrees ) |
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204 { |
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205 zRot = (GLfloat)(degrees % 360); |
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206 updateGL(); |
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207 } |
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208 |
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209 //! [1] |
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210 class ObjectSafetyImpl : public QAxAggregated, |
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211 public IObjectSafety |
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212 { |
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213 public: |
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214 //! [1] //! [2] |
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215 ObjectSafetyImpl() {} |
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216 |
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217 long queryInterface( const QUuid &iid, void **iface ) |
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218 { |
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219 *iface = 0; |
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220 if ( iid == IID_IObjectSafety ) |
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221 *iface = (IObjectSafety*)this; |
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222 else |
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223 return E_NOINTERFACE; |
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224 |
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225 AddRef(); |
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226 return S_OK; |
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227 } |
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228 |
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229 //! [2] //! [3] |
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230 QAXAGG_IUNKNOWN; |
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231 |
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232 //! [3] //! [4] |
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233 HRESULT WINAPI GetInterfaceSafetyOptions( REFIID riid, DWORD *pdwSupportedOptions, DWORD *pdwEnabledOptions ) |
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234 { |
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235 *pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER; |
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236 *pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA | INTERFACESAFE_FOR_UNTRUSTED_CALLER; |
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237 return S_OK; |
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238 } |
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239 HRESULT WINAPI SetInterfaceSafetyOptions( REFIID riid, DWORD pdwSupportedOptions, DWORD pdwEnabledOptions ) |
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240 { |
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241 return S_OK; |
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242 } |
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243 }; |
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244 //! [4] //! [5] |
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245 |
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246 QAxAggregated *GLBox::createAggregate() |
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247 { |
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248 return new ObjectSafetyImpl(); |
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249 } |
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250 //! [5] |