1 | /* $Id: UIFilmContainer.cpp 76606 2019-01-02 05:40:39Z vboxsync $ */
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2 | /** @file
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3 | * VBox Qt GUI - UIFilmContainer class implementation.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2013-2019 Oracle Corporation
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | */
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17 |
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18 | /* Qt includes: */
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19 | #include <QCheckBox>
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20 | #include <QHBoxLayout>
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21 | #include <QPainter>
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22 | #include <QScrollArea>
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23 | #include <QScrollBar>
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24 | #include <QStyle>
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25 | #include <QVBoxLayout>
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26 |
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27 | /* GUI includes: */
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28 | #include "UIFilmContainer.h"
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29 |
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30 |
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31 | /** QWidget subclass providing GUI with UIFilmContainer item prototype.
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32 | * @todo Rename to something more suitable like UIScreenThumbnail. */
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33 | class UIFilm : public QIWithRetranslateUI<QWidget>
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34 | {
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35 | Q_OBJECT;
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36 |
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37 | public:
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38 |
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39 | /** Constructs film widget passing @a pParent to the base-class.
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40 | * @param iScreenIndex Brings the guest-screen index this film referencing.
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41 | * @param fEnabled Brings whether the guest-screen mentioned above is enabled. */
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42 | UIFilm(int iScreenIndex, BOOL fEnabled, QWidget *pParent = 0);
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43 |
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44 | /** Returns whether guest-screen is enabled. */
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45 | bool checked() const;
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46 |
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47 | protected:
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48 |
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49 | /** Handles translation event. */
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50 | virtual void retranslateUi() /* override */;
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51 |
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52 | /** Handles paint @a pEvent. */
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53 | virtual void paintEvent(QPaintEvent *pEvent) /* override */;
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54 |
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55 | /** Returns minimum size-hint. */
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56 | virtual QSize minimumSizeHint() const /* override */;
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57 |
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58 | private:
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59 |
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60 | /** Prepares all. */
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61 | void prepare();
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62 | /** Prepares layout. */
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63 | void prepareLayout();
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64 | /** Prepares check-box. */
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65 | void prepareCheckBox();
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66 |
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67 | /** Holds the guest-screen index. */
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68 | int m_iScreenIndex;
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69 | /** Holds whether guest-screen was enabled. */
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70 | BOOL m_fWasEnabled;
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71 |
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72 | /** Holds the main-layout instance. */
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73 | QVBoxLayout *m_pMainLayout;
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74 | /** Holds the check-box instance. */
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75 | QCheckBox *m_pCheckBox;
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76 | };
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77 |
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78 |
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79 | /*********************************************************************************************************************************
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80 | * Class UIFilm implementation. *
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81 | *********************************************************************************************************************************/
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82 |
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83 | UIFilm::UIFilm(int iScreenIndex, BOOL fEnabled, QWidget *pParent /* = 0*/)
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84 | : QIWithRetranslateUI<QWidget>(pParent)
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85 | , m_iScreenIndex(iScreenIndex)
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86 | , m_fWasEnabled(fEnabled)
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87 | , m_pCheckBox(0)
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88 | {
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89 | /* Prepare: */
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90 | prepare();
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91 | }
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92 |
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93 | bool UIFilm::checked() const
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94 | {
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95 | /* Is the check-box currently checked? */
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96 | return m_pCheckBox->isChecked();
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97 | }
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98 |
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99 | void UIFilm::retranslateUi()
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100 | {
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101 | /* Translate check-box: */
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102 | m_pCheckBox->setText(QApplication::translate("UIMachineSettingsDisplay", "Screen %1").arg(m_iScreenIndex + 1));
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103 | m_pCheckBox->setWhatsThis(QApplication::translate("UIMachineSettingsDisplay", "When checked, enables video recording for screen %1.").arg(m_iScreenIndex + 1));
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104 | }
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105 |
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106 | void UIFilm::paintEvent(QPaintEvent *)
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107 | {
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108 | /* Compose painting rectangle: */
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109 | const QRect rect(1, 1, width() - 2, height() - 2);
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110 |
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111 | /* Create painter: */
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112 | QPainter painter(this);
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113 | painter.setRenderHint(QPainter::Antialiasing);
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114 |
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115 | /* Configure painter clipping: */
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116 | QPainterPath path;
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117 | int iDiameter = 6;
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118 | QSizeF arcSize(2 * iDiameter, 2 * iDiameter);
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119 | path.moveTo(rect.x() + iDiameter, rect.y());
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120 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-iDiameter, 0), 90, 90);
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121 | path.lineTo(path.currentPosition().x(), rect.height() - iDiameter);
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122 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(0, -iDiameter), 180, 90);
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123 | path.lineTo(rect.width() - iDiameter, path.currentPosition().y());
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124 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-iDiameter, -2 * iDiameter), 270, 90);
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125 | path.lineTo(path.currentPosition().x(), rect.y() + iDiameter);
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126 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-2 * iDiameter, -iDiameter), 0, 90);
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127 | path.closeSubpath();
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128 |
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129 | /* Get current background color: */
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130 | QColor currentColor(palette().color(backgroundRole()));
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131 |
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132 | /* Fill with background: */
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133 | painter.setClipPath(path);
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134 | QColor newColor1 = currentColor;
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135 | QColor newColor2 = currentColor.darker(125);
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136 | QLinearGradient headerGradient(rect.topLeft(), rect.bottomRight());
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137 | headerGradient.setColorAt(0, newColor1);
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138 | headerGradient.setColorAt(1, newColor2);
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139 | painter.fillRect(rect, headerGradient);
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140 |
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141 | /* Stroke with border: */
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142 | QColor strokeColor = currentColor.darker(150);
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143 | painter.setClipping(false);
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144 | painter.strokePath(path, strokeColor);
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145 | }
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146 |
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147 | QSize UIFilm::minimumSizeHint() const
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148 | {
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149 | /* Return 16:9 aspect-ratio msh: */
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150 | QSize msh = QWidget::minimumSizeHint();
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151 | return QSize(msh.width(), (msh.width() * 9) / 16);
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152 | }
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153 |
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154 | void UIFilm::prepare()
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155 | {
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156 | /* Prepare layout: */
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157 | prepareLayout();
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158 | /* Prepare check-box: */
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159 | prepareCheckBox();
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160 |
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161 | /* Apply language settings: */
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162 | retranslateUi();
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163 | }
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164 |
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165 | void UIFilm::prepareLayout()
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166 | {
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167 | /* Create layout: */
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168 | m_pMainLayout = new QVBoxLayout(this);
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169 | if (m_pMainLayout)
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170 | {
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171 | /* Configure layout: */
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172 | #ifdef VBOX_WS_MAC
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173 | m_pMainLayout->setContentsMargins(10, 10, 15, 10);
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174 | #endif
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175 |
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176 | /* Add strech: */
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177 | m_pMainLayout->addStretch();
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178 | }
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179 | }
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180 |
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181 | void UIFilm::prepareCheckBox()
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182 | {
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183 | /* Create check-box: */
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184 | m_pCheckBox = new QCheckBox;
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185 | if (m_pCheckBox)
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186 | {
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187 | /* Configure check-box: */
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188 | m_pCheckBox->setChecked(static_cast<bool>(m_fWasEnabled));
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189 | /* Configure font: */
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190 | QFont currentFont = m_pCheckBox->font();
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191 | #ifdef VBOX_WS_MAC
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192 | currentFont.setPointSize(currentFont.pointSize() - 2);
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193 | #else
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194 | currentFont.setPointSize(currentFont.pointSize() - 1);
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195 | #endif
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196 | m_pCheckBox->setFont(currentFont);
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197 |
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198 | /* Insert into layout: */
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199 | m_pMainLayout->insertWidget(0, m_pCheckBox);
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200 | }
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201 | }
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202 |
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203 |
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204 | /*********************************************************************************************************************************
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205 | * Class UIFilmContainer implementation. *
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206 | *********************************************************************************************************************************/
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207 |
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208 | UIFilmContainer::UIFilmContainer(QWidget *pParent /* = 0*/)
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209 | : QWidget(pParent)
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210 | , m_pMainLayout(0)
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211 | , m_pScroller(0)
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212 | {
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213 | /* Prepare: */
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214 | prepare();
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215 | }
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216 |
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217 | QVector<BOOL> UIFilmContainer::value() const
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218 | {
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219 | /* Enumerate all the existing widgets: */
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220 | QVector<BOOL> value;
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221 | foreach (UIFilm *pWidget, m_widgets)
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222 | value << static_cast<BOOL>(pWidget->checked());
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223 |
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224 | /* Return value: */
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225 | return value;
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226 | }
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227 |
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228 | void UIFilmContainer::setValue(const QVector<BOOL> &value)
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229 | {
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230 | /* Cleanup viewport/widget list: */
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231 | delete m_pScroller->takeWidget();
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232 | m_widgets.clear();
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233 |
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234 | /* Create widget: */
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235 | QWidget *pWidget = new QWidget;
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236 | if (pWidget)
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237 | {
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238 | /* Create widget-layout: */
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239 | QHBoxLayout *pWidgetLayout = new QHBoxLayout(pWidget);
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240 | if (pWidgetLayout)
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241 | {
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242 | /* Configure widget-layout: */
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243 | pWidgetLayout->setMargin(0);
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244 | #ifdef VBOX_WS_MAC
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245 | pWidgetLayout->setSpacing(5);
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246 | #else
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247 | pWidgetLayout->setSpacing(qApp->style()->pixelMetric(QStyle::PM_LayoutHorizontalSpacing) / 2);
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248 | #endif
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249 |
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250 | /* Create new films according passed vector: */
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251 | for (int iScreenIndex = 0; iScreenIndex < value.size(); ++iScreenIndex)
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252 | {
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253 | /* Create new film: */
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254 | UIFilm *pFilm = new UIFilm(iScreenIndex, value[iScreenIndex]);
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255 | if (pFilm)
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256 | {
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257 | /* Add film into the widget list: */
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258 | m_widgets << pFilm;
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259 |
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260 | /* Add into layout: */
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261 | pWidgetLayout->addWidget(pFilm);
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262 | }
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263 | }
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264 | }
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265 |
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266 | /* Assign scroller with widget: */
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267 | m_pScroller->setWidget(pWidget);
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268 | /* Reconfigure scroller widget: */
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269 | m_pScroller->widget()->setAutoFillBackground(false);
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270 | /* And adjust that widget geometry: */
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271 | QSize msh = m_pScroller->widget()->minimumSizeHint();
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272 | int iMinimumHeight = msh.height();
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273 | m_pScroller->viewport()->setFixedHeight(iMinimumHeight);
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274 | }
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275 | }
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276 |
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277 | void UIFilmContainer::prepare()
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278 | {
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279 | /* Prepare layout: */
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280 | prepareLayout();
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281 | /* Prepare scroller: */
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282 | prepareScroller();
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283 |
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284 | /* Append with 'default' value: */
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285 | setValue(QVector<BOOL>() << true);
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286 | }
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287 |
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288 | void UIFilmContainer::prepareLayout()
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289 | {
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290 | /* Create layout: */
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291 | m_pMainLayout = new QVBoxLayout(this);
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292 | if (m_pMainLayout)
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293 | {
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294 | /* Configure layout: */
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295 | m_pMainLayout->setMargin(0);
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296 | m_pMainLayout->setSpacing(0);
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297 | }
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298 | }
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299 |
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300 | void UIFilmContainer::prepareScroller()
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301 | {
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302 | /* Create scroller: */
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303 | m_pScroller = new QScrollArea;
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304 | if (m_pScroller)
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305 | {
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306 | /* Configure scroller: */
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307 | m_pScroller->setFrameShape(QFrame::NoFrame);
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308 | m_pScroller->viewport()->setAutoFillBackground(false);
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309 | m_pScroller->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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310 | m_pScroller->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
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311 |
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312 | /* Add into layout: */
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313 | m_pMainLayout->addWidget(m_pScroller);
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314 | }
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315 | }
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316 |
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317 |
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318 | #include "UIFilmContainer.moc"
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