src/panels/places/placesitemlistwidget.cpp

   1 /*
   2  * SPDX-FileCopyrightText: 2012 Peter Penz <peter.penz19@gmail.com>
   3  *
   4  * SPDX-License-Identifier: GPL-2.0-or-later
   5  */
   6
   7 #include "placesitemlistwidget.h"
   8
   9 #include <QDebug>
  10
  11 #include <QGraphicsView>
  12 #include <QStyleOption>
  13
  14 #include <KDiskFreeSpaceInfo>
  15 #include <KMountPoint>
  16
  17 #define CAPACITYBAR_HEIGHT 2
  18 #define CAPACITYBAR_MARGIN 2
  19
  20
  21 PlacesItemListWidget::PlacesItemListWidget(KItemListWidgetInformant* informant, QGraphicsItem* parent) :
  22     KStandardItemListWidget(informant, parent)
  23     , m_isMountPoint(false)
  24     , m_drawCapacityBar(false)
  25     , m_capacityBarRatio(0)
  26 {
  27 }
  28
  29 PlacesItemListWidget::~PlacesItemListWidget()
  30 {
  31 }
  32
  33 bool PlacesItemListWidget::isHidden() const
  34 {
  35     return data().value("isHidden").toBool() ||
  36            data().value("isGroupHidden").toBool();
  37 }
  38
  39 QPalette::ColorRole PlacesItemListWidget::normalTextColorRole() const
  40 {
  41     return QPalette::WindowText;
  42 }
  43
  44 void PlacesItemListWidget::updateCapacityBar()
  45 {
  46     const bool isDevice = !data().value("udi").toString().isEmpty();
  47     const QUrl url = data().value("url").toUrl();
  48     if (isDevice && url.isLocalFile()) {
  49         const QString mountPointPath = url.toLocalFile();
  50         qDebug() << "url:" << mountPointPath;
  51         KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(mountPointPath);
  52         m_isMountPoint = (mp && mp->mountPoint() == mountPointPath);
  53         qDebug() << "    isMountPoint:" << m_isMountPoint;
  54         if (m_isMountPoint) {
  55             const KDiskFreeSpaceInfo info = KDiskFreeSpaceInfo::freeSpaceInfo(mountPointPath);
  56             m_drawCapacityBar = info.size() != 0;
  57             m_capacityBarRatio = (qreal)info.used() / (qreal)info.size();
  58             qDebug() << "    capacityBarRatio:" << m_capacityBarRatio << "(" << info.used() << "/" << info.size() << ")";
  59
  60             // update();
  61             return;
  62         }
  63     }
  64
  65     // else
  66     resetCapacityBar();
  67 }
  68
  69 void PlacesItemListWidget::resetCapacityBar()
  70 {
  71     m_isMountPoint = false;
  72     m_drawCapacityBar = false;
  73     m_capacityBarRatio = 0;
  74 }
  75
  76 void PlacesItemListWidget::polishEvent()
  77 {
  78     updateCapacityBar();
  79
  80     QGraphicsWidget::polishEvent();
  81 }
  82
  83 void PlacesItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
  84 {
  85     KStandardItemListWidget::paint(painter, option, widget);
  86
  87     if (m_drawCapacityBar) {
  88         const TextInfo* textInfo = m_textInfo.value("text");
  89         if (textInfo) { // See KStandarItemListWidget::paint() for info on why we check textInfo.
  90             painter->save();
  91
  92             QRect capacityRect(
  93                 textInfo->pos.x(),
  94                 option->rect.top() + option->rect.height() - CAPACITYBAR_HEIGHT - CAPACITYBAR_MARGIN,
  95                 qMin((qreal)option->rect.width(), selectionRect().width()) - (textInfo->pos.x() - option->rect.left()),
  96                 CAPACITYBAR_HEIGHT
  97             );
  98
  99             const QPalette pal = palette();
 100             const QPalette::ColorGroup group = isActiveWindow() ? QPalette::Active : QPalette::Inactive;
 101             // QColor bgColor = QColor::fromRgb(230, 230, 230);
 102             // QColor outlineColor = QColor::fromRgb(208, 208, 208);
 103             // QColor bgColor = QColor::fromRgb(0, 230, 0);
 104             // QColor outlineColor = QColor::fromRgb(208, 0, 0, 127);
 105             // QColor normalUsedColor = QColor::fromRgb(38, 160, 218);
 106             // QColor dangerUsedColor = QColor::fromRgb(218, 38, 38);
 107             // QColor bgColor = pal.base().color().darker(130);
 108             // QColor outlineColor = pal.base().color().darker(150);
 109
 110             QPalette::ColorRole role;
 111             // role = isSelected() ? QPalette::Highlight : QPalette::Window;
 112             // QColor bgColor = styleOption().palette.color(group, role).darker(150);
 113             // QColor outlineColor = styleOption().palette.color(group, role).darker(170);
 114             QColor bgColor = isSelected()
 115                 ? styleOption().palette.color(group, QPalette::Highlight).darker(180)
 116                 : styleOption().palette.color(group, QPalette::Window).darker(120);
 117
 118             role = isSelected() ? QPalette::HighlightedText : QPalette::Highlight;
 119             QColor normalUsedColor = styleOption().palette.color(group, role);
 120
 121             QColor dangerUsedColor = QColor::fromRgb(218, 38, 38);
 122
 123             // Background
 124             painter->fillRect(capacityRect, bgColor);
 125
 126             // Outline
 127             // const QRect outlineRect(capacityRect.x(), capacityRect.y(), capacityRect.width() - 1, capacityRect.height() - 1);
 128             // painter->setPen(outlineColor);
 129             // painter->drawRect(outlineRect);
 130
 131             // Fill
 132             const QRect fillRect(capacityRect.x(), capacityRect.y(), capacityRect.width() * m_capacityBarRatio, capacityRect.height());
 133             if (m_capacityBarRatio < 0.95) { // Fill
 134                 painter->fillRect(fillRect, normalUsedColor);
 135             } else {
 136                 painter->fillRect(fillRect, dangerUsedColor);
 137             }
 138
 139             painter->restore();
 140         }
 141     }
 142 }