1 | /* $Id: UIFilmContainer.cpp 76553 2019-01-01 01:45:53Z 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 | #ifdef VBOX_WITH_PRECOMPILED_HEADERS
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19 | # include <precomp.h>
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20 | #else /* !VBOX_WITH_PRECOMPILED_HEADERS */
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21 |
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22 | /* Qt includes: */
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23 | # include <QCheckBox>
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24 | # include <QHBoxLayout>
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25 | # include <QPainter>
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26 | # include <QScrollArea>
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27 | # include <QScrollBar>
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28 | # include <QStyle>
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29 | # include <QVBoxLayout>
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30 |
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31 | /* GUI includes: */
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32 | # include "UIFilmContainer.h"
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33 |
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34 | #endif /* !VBOX_WITH_PRECOMPILED_HEADERS */
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35 |
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36 |
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37 | /** QWidget subclass providing GUI with UIFilmContainer item prototype.
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38 | * @todo Rename to something more suitable like UIScreenThumbnail. */
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39 | class UIFilm : public QIWithRetranslateUI<QWidget>
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40 | {
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41 | Q_OBJECT;
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42 |
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43 | public:
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44 |
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45 | /** Constructs film widget passing @a pParent to the base-class.
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46 | * @param iScreenIndex Brings the guest-screen index this film referencing.
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47 | * @param fEnabled Brings whether the guest-screen mentioned above is enabled. */
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48 | UIFilm(int iScreenIndex, BOOL fEnabled, QWidget *pParent = 0);
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49 |
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50 | /** Returns whether guest-screen is enabled. */
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51 | bool checked() const;
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52 |
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53 | protected:
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54 |
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55 | /** Handles translation event. */
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56 | virtual void retranslateUi() /* override */;
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57 |
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58 | /** Handles paint @a pEvent. */
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59 | virtual void paintEvent(QPaintEvent *pEvent) /* override */;
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60 |
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61 | /** Returns minimum size-hint. */
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62 | virtual QSize minimumSizeHint() const /* override */;
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63 |
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64 | private:
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65 |
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66 | /** Prepares all. */
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67 | void prepare();
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68 | /** Prepares layout. */
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69 | void prepareLayout();
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70 | /** Prepares check-box. */
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71 | void prepareCheckBox();
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72 |
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73 | /** Holds the guest-screen index. */
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74 | int m_iScreenIndex;
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75 | /** Holds whether guest-screen was enabled. */
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76 | BOOL m_fWasEnabled;
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77 |
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78 | /** Holds the main-layout instance. */
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79 | QVBoxLayout *m_pMainLayout;
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80 | /** Holds the check-box instance. */
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81 | QCheckBox *m_pCheckBox;
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82 | };
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83 |
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84 |
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85 | /*********************************************************************************************************************************
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86 | * Class UIFilm implementation. *
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87 | *********************************************************************************************************************************/
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88 |
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89 | UIFilm::UIFilm(int iScreenIndex, BOOL fEnabled, QWidget *pParent /* = 0*/)
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90 | : QIWithRetranslateUI<QWidget>(pParent)
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91 | , m_iScreenIndex(iScreenIndex)
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92 | , m_fWasEnabled(fEnabled)
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93 | , m_pCheckBox(0)
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94 | {
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95 | /* Prepare: */
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96 | prepare();
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97 | }
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98 |
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99 | bool UIFilm::checked() const
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100 | {
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101 | /* Is the check-box currently checked? */
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102 | return m_pCheckBox->isChecked();
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103 | }
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104 |
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105 | void UIFilm::retranslateUi()
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106 | {
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107 | /* Translate check-box: */
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108 | m_pCheckBox->setText(QApplication::translate("UIMachineSettingsDisplay", "Screen %1").arg(m_iScreenIndex + 1));
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109 | m_pCheckBox->setWhatsThis(QApplication::translate("UIMachineSettingsDisplay", "When checked, enables video recording for screen %1.").arg(m_iScreenIndex + 1));
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110 | }
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111 |
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112 | void UIFilm::paintEvent(QPaintEvent *)
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113 | {
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114 | /* Compose painting rectangle: */
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115 | const QRect rect(1, 1, width() - 2, height() - 2);
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116 |
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117 | /* Create painter: */
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118 | QPainter painter(this);
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119 | painter.setRenderHint(QPainter::Antialiasing);
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120 |
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121 | /* Configure painter clipping: */
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122 | QPainterPath path;
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123 | int iDiameter = 6;
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124 | QSizeF arcSize(2 * iDiameter, 2 * iDiameter);
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125 | path.moveTo(rect.x() + iDiameter, rect.y());
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126 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-iDiameter, 0), 90, 90);
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127 | path.lineTo(path.currentPosition().x(), rect.height() - iDiameter);
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128 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(0, -iDiameter), 180, 90);
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129 | path.lineTo(rect.width() - iDiameter, path.currentPosition().y());
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130 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-iDiameter, -2 * iDiameter), 270, 90);
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131 | path.lineTo(path.currentPosition().x(), rect.y() + iDiameter);
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132 | path.arcTo(QRectF(path.currentPosition(), arcSize).translated(-2 * iDiameter, -iDiameter), 0, 90);
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133 | path.closeSubpath();
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134 |
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135 | /* Get current background color: */
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136 | QColor currentColor(palette().color(backgroundRole()));
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137 |
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138 | /* Fill with background: */
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139 | painter.setClipPath(path);
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140 | QColor newColor1 = currentColor;
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141 | QColor newColor2 = currentColor.darker(125);
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142 | QLinearGradient headerGradient(rect.topLeft(), rect.bottomRight());
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143 | headerGradient.setColorAt(0, newColor1);
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144 | headerGradient.setColorAt(1, newColor2);
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145 | painter.fillRect(rect, headerGradient);
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146 |
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147 | /* Stroke with border: */
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148 | QColor strokeColor = currentColor.darker(150);
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149 | painter.setClipping(false);
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150 | painter.strokePath(path, strokeColor);
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151 | }
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152 |
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153 | QSize UIFilm::minimumSizeHint() const
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154 | {
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155 | /* Return 16:9 aspect-ratio msh: */
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156 | QSize msh = QWidget::minimumSizeHint();
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157 | return QSize(msh.width(), (msh.width() * 9) / 16);
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158 | }
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159 |
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160 | void UIFilm::prepare()
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161 | {
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162 | /* Prepare layout: */
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163 | prepareLayout();
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164 | /* Prepare check-box: */
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165 | prepareCheckBox();
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166 |
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167 | /* Apply language settings: */
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168 | retranslateUi();
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169 | }
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170 |
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171 | void UIFilm::prepareLayout()
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172 | {
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173 | /* Create layout: */
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174 | m_pMainLayout = new QVBoxLayout(this);
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175 | if (m_pMainLayout)
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176 | {
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177 | /* Configure layout: */
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178 | #ifdef VBOX_WS_MAC
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179 | m_pMainLayout->setContentsMargins(10, 10, 15, 10);
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180 | #endif
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181 |
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182 | /* Add strech: */
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183 | m_pMainLayout->addStretch();
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184 | }
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185 | }
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186 |
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187 | void UIFilm::prepareCheckBox()
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188 | {
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189 | /* Create check-box: */
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190 | m_pCheckBox = new QCheckBox;
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191 | if (m_pCheckBox)
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192 | {
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193 | /* Configure check-box: */
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194 | m_pCheckBox->setChecked(static_cast<bool>(m_fWasEnabled));
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195 | /* Configure font: */
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196 | QFont currentFont = m_pCheckBox->font();
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197 | #ifdef VBOX_WS_MAC
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198 | currentFont.setPointSize(currentFont.pointSize() - 2);
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199 | #else
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200 | currentFont.setPointSize(currentFont.pointSize() - 1);
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201 | #endif
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202 | m_pCheckBox->setFont(currentFont);
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203 |
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204 | /* Insert into layout: */
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205 | m_pMainLayout->insertWidget(0, m_pCheckBox);
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206 | }
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207 | }
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208 |
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209 |
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210 | /*********************************************************************************************************************************
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211 | * Class UIFilmContainer implementation. *
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212 | *********************************************************************************************************************************/
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213 |
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214 | UIFilmContainer::UIFilmContainer(QWidget *pParent /* = 0*/)
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215 | : QWidget(pParent)
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216 | , m_pMainLayout(0)
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217 | , m_pScroller(0)
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218 | {
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219 | /* Prepare: */
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220 | prepare();
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221 | }
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222 |
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223 | QVector<BOOL> UIFilmContainer::value() const
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224 | {
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225 | /* Enumerate all the existing widgets: */
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226 | QVector<BOOL> value;
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227 | foreach (UIFilm *pWidget, m_widgets)
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228 | value << static_cast<BOOL>(pWidget->checked());
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229 |
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230 | /* Return value: */
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231 | return value;
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232 | }
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233 |
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234 | void UIFilmContainer::setValue(const QVector<BOOL> &value)
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235 | {
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236 | /* Cleanup viewport/widget list: */
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237 | delete m_pScroller->takeWidget();
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238 | m_widgets.clear();
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239 |
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240 | /* Create widget: */
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241 | QWidget *pWidget = new QWidget;
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242 | if (pWidget)
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243 | {
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244 | /* Create widget-layout: */
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245 | QHBoxLayout *pWidgetLayout = new QHBoxLayout(pWidget);
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246 | if (pWidgetLayout)
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247 | {
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248 | /* Configure widget-layout: */
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249 | pWidgetLayout->setMargin(0);
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250 | #ifdef VBOX_WS_MAC
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251 | pWidgetLayout->setSpacing(5);
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252 | #else
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253 | pWidgetLayout->setSpacing(qApp->style()->pixelMetric(QStyle::PM_LayoutHorizontalSpacing) / 2);
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254 | #endif
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255 |
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256 | /* Create new films according passed vector: */
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257 | for (int iScreenIndex = 0; iScreenIndex < value.size(); ++iScreenIndex)
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258 | {
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259 | /* Create new film: */
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260 | UIFilm *pFilm = new UIFilm(iScreenIndex, value[iScreenIndex]);
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261 | if (pFilm)
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262 | {
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263 | /* Add film into the widget list: */
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264 | m_widgets << pFilm;
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265 |
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266 | /* Add into layout: */
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267 | pWidgetLayout->addWidget(pFilm);
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268 | }
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269 | }
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270 | }
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271 |
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272 | /* Assign scroller with widget: */
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273 | m_pScroller->setWidget(pWidget);
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274 | /* Reconfigure scroller widget: */
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275 | m_pScroller->widget()->setAutoFillBackground(false);
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276 | /* And adjust that widget geometry: */
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277 | QSize msh = m_pScroller->widget()->minimumSizeHint();
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278 | int iMinimumHeight = msh.height();
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279 | m_pScroller->viewport()->setFixedHeight(iMinimumHeight);
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280 | }
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281 | }
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282 |
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283 | void UIFilmContainer::prepare()
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284 | {
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285 | /* Prepare layout: */
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286 | prepareLayout();
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287 | /* Prepare scroller: */
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288 | prepareScroller();
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289 |
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290 | /* Append with 'default' value: */
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291 | setValue(QVector<BOOL>() << true);
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292 | }
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293 |
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294 | void UIFilmContainer::prepareLayout()
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295 | {
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296 | /* Create layout: */
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297 | m_pMainLayout = new QVBoxLayout(this);
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298 | if (m_pMainLayout)
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299 | {
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300 | /* Configure layout: */
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301 | m_pMainLayout->setMargin(0);
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302 | m_pMainLayout->setSpacing(0);
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303 | }
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304 | }
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305 |
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306 | void UIFilmContainer::prepareScroller()
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307 | {
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308 | /* Create scroller: */
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309 | m_pScroller = new QScrollArea;
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310 | if (m_pScroller)
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311 | {
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312 | /* Configure scroller: */
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313 | m_pScroller->setFrameShape(QFrame::NoFrame);
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314 | m_pScroller->viewport()->setAutoFillBackground(false);
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315 | m_pScroller->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
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316 | m_pScroller->setSizePolicy(QSizePolicy::Ignored, QSizePolicy::Fixed);
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317 |
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318 | /* Add into layout: */
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319 | m_pMainLayout->addWidget(m_pScroller);
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320 | }
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321 | }
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322 |
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323 |
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324 | #include "UIFilmContainer.moc"
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