File indexing completed on 2024-04-28 05:45:53

 /*
     SPDX-FileCopyrightText: 2008-2010 Volker Lanz <vl@fidra.de>
     SPDX-FileCopyrightText: 2010 Hugo Pereira Da Costa <hugo@oxygen-icons.org>
     SPDX-FileCopyrightText: 2012-2020 Andrius Štikonas <andrius@stikonas.eu
     SPDX-FileCopyrightText: 2015 Teo Mrnjavac <teo@kde.org>
     SPDX-FileCopyrightText: 2020 David Faure <faure@kde.org>
 
     SPDX-License-Identifier: GPL-3.0-or-later
 */
 
 #include "gui/partwidget.h"
 
 #include "core/partition.h"
 #include "fs/filesystem.h"
 #include "util/capacity.h"
 
 #include <QApplication>
 #include <QFontDatabase>
 #include <QPainter>
 #include <QStyleOptionButton>
 
 /** Creates a new PartWidget
     @param parent pointer to the parent widget
     @param p pointer to the Partition this widget will show. must not be nullptr.
 */
 PartWidget::PartWidget(QWidget* parent, Partition* p) :
     PartWidgetBase(parent),
     m_Partition(nullptr),
     m_Active(false)
 {
     setFont(QFontDatabase::systemFont(QFontDatabase::SmallestReadableFont));
     init(p);
     m_fileSystemColorCode = FileSystem::defaultColorCode;
 }
 
 void PartWidget::init(Partition* p)
 {
     m_Partition = p;
 
     if (partition())
         setToolTip(partition()->deviceNode() + QStringLiteral("\n") + partition()->fileSystem().name() + QStringLiteral(" ") + QString(Capacity::formatByteSize(partition()->capacity())));
     else
         setToolTip(QString());
 
     updateChildren();
 }
 
 /** Updates the widget's children */
 void PartWidget::updateChildren()
 {
     if (partition()) {
         for (const auto &w : childWidgets()) {
             w->setVisible(false);
             w->deleteLater();
             w->setParent(nullptr);
         }
 
         for (const auto &child : partition()->children()) {
             QWidget* w = new PartWidget(this, child);
             w->setVisible(true);
         }
 
         positionChildren(this, partition()->children(), childWidgets());
     }
 }
 
 void PartWidget::setFileSystemColorCode(const std::vector<QColor>& colorCode)
 {
     m_fileSystemColorCode = colorCode;
     repaint();
 }
 
 void PartWidget::resizeEvent(QResizeEvent*)
 {
     if (partition())
         positionChildren(this, partition()->children(), childWidgets());
 }
 
 QColor PartWidget::activeColor(const QColor& col) const
 {
     return isActive() ? col.darker(190) : col;
 }
 
 void PartWidget::paintEvent(QPaintEvent*)
 {
     if (partition() == nullptr)
         return;
 
     auto partitionCapacity = partition()->capacity();
     if (partitionCapacity <= 0)
         return;
 
     const int usedPercentage = static_cast<int>(partition()->used() * 100 / partitionCapacity);
     const int w = width() * usedPercentage / 100;
 
     QPainter painter(this);
     painter.setRenderHints(QPainter::Antialiasing);
 
     const QColor base = activeColor(m_fileSystemColorCode[ static_cast<int>(partition()->fileSystem().type()) ]);
     if (partition()->roles().has(PartitionRole::Extended)) {
         drawGradient(&painter, base, QRect(0, 0, width(), height()));
         return;
     }
 
     if (!partition()->roles().has(PartitionRole::Unallocated)) {
         const QColor dark = base.darker(105);
         const QColor light = base.lighter(120);
 
         // draw free space background
         drawGradient(&painter, light, QRect(0, 0, width(), height()), isActive());
 
         // draw used space in front of that
         drawGradient(&painter, dark, QRect(0, 0, w, height() - 1));
     } else
         drawGradient(&painter, base, QRect(0, 0, width(), height()), isActive());
 
     // draw name and size
     QString text = partition()->deviceNode().remove(QStringLiteral("/dev/")) + QStringLiteral("\n") + QString(Capacity::formatByteSize(partition()->capacity()));
 
     const QRect textRect(0, 0, width() - 1, height() - 1);
     const QRect boundingRect = painter.boundingRect(textRect, Qt::AlignCenter, text);
     if (boundingRect.x() > PartWidgetBase::borderWidth() && boundingRect.y() > PartWidgetBase::borderHeight()) {
         if (isActive())
             painter.setPen(Qt::white);
         painter.drawText(textRect, Qt::AlignCenter, text);
     }
 }
 
 void PartWidget::drawGradient(QPainter* painter, const QColor& color, const QRect& rect, bool active) const
 {
     if (rect.width() < 8)
         return;
 
     QStyleOptionButton option;
     option.initFrom(this);
     option.rect = rect;
     option.palette.setColor(QPalette::Button, color);
     option.palette.setColor(QPalette::Window, color);
     option.state |= QStyle::State_Raised;
     if (!active)
         option.state &= ~QStyle::State_MouseOver;
     else
         option.state |= QStyle::State_MouseOver;
 
     style()->drawControl(QStyle::CE_PushButtonBevel, &option, painter, this);
 }
 
 #include "moc_partwidget.cpp"