Port from KIconLoader::drawOverlays to KIconUtils::addOverlays

[dolphin.git] / src / kitemviews / kitemlistwidget.cpp

diff --git a/src/kitemviews/kitemlistwidget.cpp b/src/kitemviews/kitemlistwidget.cpp
index ef4c1f797a36156c5bf4120839ccf0407bb4c0fd..4c9f259861104b141f6a624b2bda788767ec08f2 100644 (file)
--- a/src/kitemviews/kitemlistwidget.cpp
+++ b/src/kitemviews/kitemlistwidget.cpp
@@ -1,66 +1,72 @@
-/***************************************************************************
- *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
- *                                                                         *
- *   Based on the Itemviews NG project from Trolltech Labs:                *
- *   http://qt.gitorious.org/qt-labs/itemviews-ng                          *
- *                                                                         *
- *   This program is free software; you can redistribute it and/or modify  *
- *   it under the terms of the GNU General Public License as published by  *
- *   the Free Software Foundation; either version 2 of the License, or     *
- *   (at your option) any later version.                                   *
- *                                                                         *
- *   This program is distributed in the hope that it will be useful,       *
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
- *   GNU General Public License for more details.                          *
- *                                                                         *
- *   You should have received a copy of the GNU General Public License     *
- *   along with this program; if not, write to the                         *
- *   Free Software Foundation, Inc.,                                       *
- *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
- ***************************************************************************/
+/*
+ * SPDX-FileCopyrightText: 2011 Peter Penz <peter.penz19@gmail.com>
+ *
+ * Based on the Itemviews NG project from Trolltech Labs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */

 
 #include "kitemlistwidget.h"
 
 #include "kitemlistview.h"
 
 #include "kitemlistwidget.h"
 
 #include "kitemlistview.h"

-#include "kitemmodelbase.h"
+#include "private/kitemlistselectiontoggle.h"

 
 

-#include <KDebug>
+#include <KConfigGroup>
+#include <KSharedConfig>

 
 

+#include <QApplication>

 #include <QPainter>
 #include <QPropertyAnimation>
 #include <QPainter>
 #include <QPropertyAnimation>

-#include <QStyle>

 #include <QStyleOption>
 
 #include <QStyleOption>
 

-KItemListWidget::KItemListWidget(QGraphicsItem* parent) :
-    QGraphicsWidget(parent, 0),
-    m_index(-1),
-    m_selected(false),
-    m_current(false),
-    m_hovered(false),
-    m_data(),
-    m_visibleRoles(),
-    m_visibleRolesSizes(),
-    m_styleOption(),
-    m_hoverOpacity(0),
-    m_hoverCache(0),
-    m_hoverAnimation(0)
+KItemListWidgetInformant::KItemListWidgetInformant()

 {
 }
 
 {
 }
 

+KItemListWidgetInformant::~KItemListWidgetInformant()
+{
+}
+
+KItemListWidget::KItemListWidget(KItemListWidgetInformant *informant, QGraphicsItem *parent)
+    : QGraphicsWidget(parent)
+    , m_informant(informant)
+    , m_index(-1)
+    , m_selected(false)
+    , m_current(false)
+    , m_hovered(false)
+    , m_expansionAreaHovered(false)
+    , m_alternateBackground(false)
+    , m_enabledSelectionToggle(false)
+    , m_data()
+    , m_visibleRoles()
+    , m_columnWidths()
+    , m_sidePadding(0)
+    , m_styleOption()
+    , m_siblingsInfo()
+    , m_hoverOpacity(0)
+    , m_hoverCache(nullptr)
+    , m_hoverSequenceIndex(0)
+    , m_selectionToggle(nullptr)
+    , m_editedRole()
+    , m_iconSize(-1)
+{
+    connect(&m_hoverSequenceTimer, &QTimer::timeout, this, &KItemListWidget::slotHoverSequenceTimerTimeout);
+}
+

 KItemListWidget::~KItemListWidget()
 {
 KItemListWidget::~KItemListWidget()
 {

-    clearCache();
+    clearHoverCache();

 }
 
 void KItemListWidget::setIndex(int index)
 {
     if (m_index != index) {
 }
 
 void KItemListWidget::setIndex(int index)
 {
     if (m_index != index) {

-        if (m_hoverAnimation) {
-            m_hoverAnimation->stop();
-            m_hoverOpacity = 0;
-        }
-        clearCache();
+        delete m_selectionToggle;
+        m_selectionToggle = nullptr;
+
+        m_hoverOpacity = 0;
+
+        clearHoverCache();

 
         m_index = index;
     }
 
         m_index = index;
     }


@@ -71,19 +77,19 @@ int KItemListWidget::index() const
     return m_index;
 }
 
     return m_index;
 }
 

-void KItemListWidget::setData(const QHash<QByteArray, QVariant>& data,
-                              const QSet<QByteArray>& roles)
+void KItemListWidget::setData(const QHash<QByteArray, QVariant> &data, const QSet<QByteArray> &roles)

 {
 {

-    clearCache();
+    clearHoverCache();

     if (roles.isEmpty()) {
         m_data = data;
         dataChanged(m_data);
     } else {
     if (roles.isEmpty()) {
         m_data = data;
         dataChanged(m_data);
     } else {

-        foreach (const QByteArray& role, roles) {
+        for (const QByteArray &role : roles) {

             m_data[role] = data[role];
         }
         dataChanged(m_data, roles);
     }
             m_data[role] = data[role];
         }
         dataChanged(m_data, roles);
     }

+    update();

 }
 
 QHash<QByteArray, QVariant> KItemListWidget::data() const
 }
 
 QHash<QByteArray, QVariant> KItemListWidget::data() const


@@ -91,79 +97,120 @@ QHash<QByteArray, QVariant> KItemListWidget::data() const
     return m_data;
 }
 
     return m_data;
 }
 

-void KItemListWidget::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
+void KItemListWidget::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget)

 {
 {

-    Q_UNUSED(option);
+    Q_UNUSED(option)

 
 

-    const QRect hoverBounds = hoverBoundingRect().toRect();
-    if (m_selected) {
-        QStyleOptionViewItemV4 viewItemOption;
-        viewItemOption.initFrom(widget);
-        viewItemOption.rect = hoverBounds;
-        viewItemOption.state = QStyle::State_Enabled | QStyle::State_Selected | QStyle::State_Item;
-        viewItemOption.viewItemPosition = QStyleOptionViewItemV4::OnlyOne;
-        widget->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &viewItemOption, painter, widget);
+    if (m_alternateBackground) {
+        QColor backgroundColor = m_styleOption.palette.color(QPalette::AlternateBase);
+        if (!widget->hasFocus()) {
+            QColor baseColor = m_styleOption.palette.color(QPalette::Base);
+            if (baseColor.lightnessF() > 0.5) {
+                // theme seems light
+                backgroundColor = backgroundColor.lighter(101);
+            } else {
+                // theme seems dark
+                backgroundColor = backgroundColor.darker(101);
+            }
+        }
+
+        const QRectF backgroundRect(0, 0, size().width(), size().height());
+        painter->fillRect(backgroundRect, backgroundColor);

     }
 
     }
 

-    if (m_hoverOpacity <= 0.0) {
-        return;
+    if (m_selected && m_editedRole.isEmpty()) {
+        const QStyle::State activeState(isActiveWindow() && widget->hasFocus() ? QStyle::State_Active : 0);
+        drawItemStyleOption(painter, widget, activeState | QStyle::State_Enabled | QStyle::State_Selected | QStyle::State_Item);

     }
 
     }
 

-    if (!m_hoverCache) {
-        m_hoverCache = new QPixmap(hoverBounds.size());
-        m_hoverCache->fill(Qt::transparent);
+    if (m_current && m_editedRole.isEmpty()) {
+        QStyleOptionFocusRect focusRectOption;
+        initStyleOption(&focusRectOption);
+        focusRectOption.rect = textFocusRect().toRect();
+        focusRectOption.state = QStyle::State_Enabled | QStyle::State_Item | QStyle::State_KeyboardFocusChange;
+        if (m_selected && widget->hasFocus()) {
+            focusRectOption.state |= QStyle::State_Selected;
+        }
+
+        style()->drawPrimitive(QStyle::PE_FrameFocusRect, &focusRectOption, painter, widget);
+    }

 
 

-        QPainter pixmapPainter(m_hoverCache);
+    if (m_hoverOpacity > 0.0) {
+        if (!m_hoverCache) {
+            // Initialize the m_hoverCache pixmap to improve the drawing performance
+            // when fading the hover background
+            m_hoverCache = new QPixmap(size().toSize());
+            m_hoverCache->fill(Qt::transparent);

 
 

-        QStyleOptionViewItemV4 viewItemOption;
-        viewItemOption.initFrom(widget);
-        viewItemOption.rect = QRect(0, 0, hoverBounds.width(), hoverBounds.height());
-        viewItemOption.state = QStyle::State_Enabled | QStyle::State_MouseOver | QStyle::State_Item;
-        viewItemOption.viewItemPosition = QStyleOptionViewItemV4::OnlyOne;
+            QPainter pixmapPainter(m_hoverCache);
+            const QStyle::State activeState(isActiveWindow() && widget->hasFocus() ? QStyle::State_Active | QStyle::State_Enabled : 0);
+            drawItemStyleOption(&pixmapPainter, widget, activeState | QStyle::State_MouseOver | QStyle::State_Item);
+        }

 
 

-        widget->style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &viewItemOption, &pixmapPainter, widget);
+        const qreal opacity = painter->opacity();
+        painter->setOpacity(m_hoverOpacity * opacity);
+        painter->drawPixmap(0, 0, *m_hoverCache);
+        painter->setOpacity(opacity);

     }
     }

-
-    const qreal opacity = painter->opacity();
-    painter->setOpacity(m_hoverOpacity * opacity);
-    painter->drawPixmap(hoverBounds.topLeft(), *m_hoverCache);
-    painter->setOpacity(opacity);

 }
 
 }
 

-void KItemListWidget::setVisibleRoles(const QHash<QByteArray, int>& roles)
+void KItemListWidget::setVisibleRoles(const QList<QByteArray> &roles)

 {
 {

-    const QHash<QByteArray, int> previousRoles = m_visibleRoles;
+    const QList<QByteArray> previousRoles = m_visibleRoles;

     m_visibleRoles = roles;
     m_visibleRoles = roles;

+

     visibleRolesChanged(roles, previousRoles);
     visibleRolesChanged(roles, previousRoles);

+    update();

 }
 
 }
 

-QHash<QByteArray, int> KItemListWidget::visibleRoles() const
+QList<QByteArray> KItemListWidget::visibleRoles() const

 {
     return m_visibleRoles;
 }
 
 {
     return m_visibleRoles;
 }
 

-void KItemListWidget::setVisibleRolesSizes(const QHash<QByteArray, QSizeF> rolesSizes)
+void KItemListWidget::setColumnWidth(const QByteArray &role, qreal width)

 {
 {

-    const QHash<QByteArray, QSizeF> previousRolesSizes = m_visibleRolesSizes;
-    m_visibleRolesSizes = rolesSizes;
-    visibleRolesSizesChanged(rolesSizes, previousRolesSizes);
+    const qreal previousWidth = m_columnWidths.value(role);
+    if (previousWidth != width) {
+        m_columnWidths.insert(role, width);
+        columnWidthChanged(role, width, previousWidth);
+        update();
+    }
+}
+
+qreal KItemListWidget::columnWidth(const QByteArray &role) const
+{
+    return m_columnWidths.value(role);

 }
 
 }
 

-QHash<QByteArray, QSizeF> KItemListWidget::visibleRolesSizes() const
+qreal KItemListWidget::sidePadding() const

 {
 {

-    return m_visibleRolesSizes;
+    return m_sidePadding;

 }
 
 }
 

-void KItemListWidget::setStyleOption(const KItemListStyleOption& option)
+void KItemListWidget::setSidePadding(qreal width)

 {
 {

+    if (m_sidePadding != width) {
+        m_sidePadding = width;
+        sidePaddingChanged(width);
+        update();
+    }
+}
+
+void KItemListWidget::setStyleOption(const KItemListStyleOption &option)
+{
+    if (m_styleOption == option) {
+        return;
+    }
+

     const KItemListStyleOption previous = m_styleOption;
     const KItemListStyleOption previous = m_styleOption;

-    clearCache();
+    clearHoverCache();

     m_styleOption = option;
     m_styleOption = option;

-

     styleOptionChanged(option, previous);
     styleOptionChanged(option, previous);

+    update();

 }
 
 }
 

-const KItemListStyleOption& KItemListWidget::styleOption() const
+const KItemListStyleOption &KItemListWidget::styleOption() const

 {
     return m_styleOption;
 }
 {
     return m_styleOption;
 }


@@ -172,6 +219,9 @@ void KItemListWidget::setSelected(bool selected)
 {
     if (m_selected != selected) {
         m_selected = selected;
 {
     if (m_selected != selected) {
         m_selected = selected;

+        if (m_selectionToggle) {
+            m_selectionToggle->setChecked(selected);
+        }

         selectedChanged(selected);
         update();
     }
         selectedChanged(selected);
         update();
     }


@@ -204,22 +254,34 @@ void KItemListWidget::setHovered(bool hovered)
 
     m_hovered = hovered;
 
 
     m_hovered = hovered;
 

-    if (!m_hoverAnimation) {
-        m_hoverAnimation = new QPropertyAnimation(this, "hoverOpacity", this);
-        m_hoverAnimation->setDuration(200);
-    }
-    m_hoverAnimation->stop();
+    m_hoverSequenceIndex = 0;

 
     if (hovered) {
 
     if (hovered) {

-        m_hoverAnimation->setEndValue(1.0);
+        setHoverOpacity(1.0);
+
+        if (m_enabledSelectionToggle && !(QApplication::mouseButtons() & Qt::LeftButton)) {
+            initializeSelectionToggle();
+        }
+
+        hoverSequenceStarted();
+
+        const KConfigGroup globalConfig(KSharedConfig::openConfig(), QStringLiteral("PreviewSettings"));
+        const int interval = globalConfig.readEntry("HoverSequenceInterval", 700);
+
+        m_hoverSequenceTimer.start(interval);

     } else {
     } else {

-        m_hoverAnimation->setEndValue(0.0);
-    }
+        setHoverOpacity(0.0);
+
+        if (m_selectionToggle) {
+            m_selectionToggle->deleteLater();
+            m_selectionToggle = nullptr;
+        }

 
 

-    m_hoverAnimation->start();
+        hoverSequenceEnded();
+        m_hoverSequenceTimer.stop();
+    }

 
     hoveredChanged(hovered);
 
     hoveredChanged(hovered);

-

     update();
 }
 
     update();
 }
 


@@ -228,16 +290,118 @@ bool KItemListWidget::isHovered() const
     return m_hovered;
 }
 
     return m_hovered;
 }
 

-bool KItemListWidget::contains(const QPointF& point) const
+void KItemListWidget::setExpansionAreaHovered(bool hovered)
+{
+    if (hovered == m_expansionAreaHovered) {
+        return;
+    }
+    m_expansionAreaHovered = hovered;
+    update();
+}
+
+bool KItemListWidget::expansionAreaHovered() const
+{
+    return m_expansionAreaHovered;
+}
+
+void KItemListWidget::setHoverPosition(const QPointF &pos)
+{
+    if (m_selectionToggle) {
+        m_selectionToggle->setHovered(selectionToggleRect().contains(pos));
+    }
+}
+
+void KItemListWidget::setAlternateBackground(bool enable)
+{
+    if (m_alternateBackground != enable) {
+        m_alternateBackground = enable;
+        alternateBackgroundChanged(enable);
+        update();
+    }
+}
+
+bool KItemListWidget::alternateBackground() const
+{
+    return m_alternateBackground;
+}
+
+void KItemListWidget::setEnabledSelectionToggle(bool enable)
+{
+    if (m_enabledSelectionToggle != enable) {
+        m_enabledSelectionToggle = enable;
+
+        // We want the change to take effect immediately.
+        if (m_enabledSelectionToggle) {
+            if (m_hovered) {
+                initializeSelectionToggle();
+            }
+        } else if (m_selectionToggle) {
+            m_selectionToggle->deleteLater();
+            m_selectionToggle = nullptr;
+        }
+
+        update();
+    }
+}
+
+bool KItemListWidget::enabledSelectionToggle() const
+{
+    return m_enabledSelectionToggle;
+}
+
+void KItemListWidget::setSiblingsInformation(const QBitArray &siblings)
+{
+    const QBitArray previous = m_siblingsInfo;
+    m_siblingsInfo = siblings;
+    siblingsInformationChanged(m_siblingsInfo, previous);
+    update();
+}
+
+QBitArray KItemListWidget::siblingsInformation() const

 {
 {

-    return hoverBoundingRect().contains(point) ||
-           expansionToggleRect().contains(point) ||
-           selectionToggleRect().contains(point);
+    return m_siblingsInfo;

 }
 
 }
 

-QRectF KItemListWidget::hoverBoundingRect() const
+void KItemListWidget::setEditedRole(const QByteArray &role)

 {
 {

-    return QRectF(QPointF(0, 0), size());
+    if (m_editedRole != role) {
+        const QByteArray previous = m_editedRole;
+        m_editedRole = role;
+        editedRoleChanged(role, previous);
+    }
+}
+
+QByteArray KItemListWidget::editedRole() const
+{
+    return m_editedRole;
+}
+
+void KItemListWidget::setIconSize(int iconSize)
+{
+    if (m_iconSize != iconSize) {
+        const int previousIconSize = m_iconSize;
+        m_iconSize = iconSize;
+        iconSizeChanged(iconSize, previousIconSize);
+    }
+}
+
+int KItemListWidget::iconSize() const
+{
+    return m_iconSize;
+}
+
+bool KItemListWidget::contains(const QPointF &point) const
+{
+    if (!QGraphicsWidget::contains(point)) {
+        return false;
+    }
+
+    return iconRect().contains(point) || textRect().contains(point) || expansionToggleRect().contains(point) || selectionToggleRect().contains(point);
+}
+
+QRectF KItemListWidget::textFocusRect() const
+{
+    return textRect();

 }
 
 QRectF KItemListWidget::selectionToggleRect() const
 }
 
 QRectF KItemListWidget::selectionToggleRect() const


@@ -250,57 +414,130 @@ QRectF KItemListWidget::expansionToggleRect() const
     return QRectF();
 }
 
     return QRectF();
 }
 

-void KItemListWidget::dataChanged(const QHash<QByteArray, QVariant>& current,
-                                  const QSet<QByteArray>& roles)
+QPixmap KItemListWidget::createDragPixmap(const QStyleOptionGraphicsItem *option, QWidget *widget)

 {
 {

-    Q_UNUSED(current);
-    Q_UNUSED(roles);
-    update();
+    QPixmap pixmap(size().toSize() * widget->devicePixelRatio());
+    pixmap.setDevicePixelRatio(widget->devicePixelRatio());
+    pixmap.fill(Qt::transparent);
+
+    QPainter painter(&pixmap);
+
+    const bool oldAlternateBackground = m_alternateBackground;
+    const bool wasSelected = m_selected;
+    const bool wasHovered = m_hovered;
+
+    setAlternateBackground(false);
+    setHovered(false);
+
+    paint(&painter, option, widget);
+
+    setAlternateBackground(oldAlternateBackground);
+    setSelected(wasSelected);
+    setHovered(wasHovered);
+
+    return pixmap;

 }
 
 }
 

-void KItemListWidget::visibleRolesChanged(const QHash<QByteArray, int>& current,
-                                          const QHash<QByteArray, int>& previous)
+void KItemListWidget::startActivateSoonAnimation(int timeUntilActivation)

 {
 {

-    Q_UNUSED(current);
-    Q_UNUSED(previous);
-    update();
+    Q_UNUSED(timeUntilActivation)

 }
 
 }
 

-void KItemListWidget::visibleRolesSizesChanged(const QHash<QByteArray, QSizeF>& current,
-                                               const QHash<QByteArray, QSizeF>& previous)
+void KItemListWidget::dataChanged(const QHash<QByteArray, QVariant> &current, const QSet<QByteArray> &roles)

 {
 {

-    Q_UNUSED(current);
-    Q_UNUSED(previous);
-    update();
+    Q_UNUSED(current)
+    Q_UNUSED(roles)

 }
 
 }
 

-void KItemListWidget::styleOptionChanged(const KItemListStyleOption& current,
-                                         const KItemListStyleOption& previous)
+void KItemListWidget::visibleRolesChanged(const QList<QByteArray> &current, const QList<QByteArray> &previous)

 {
 {

-    Q_UNUSED(current);
-    Q_UNUSED(previous);
-    update();
+    Q_UNUSED(current)
+    Q_UNUSED(previous)
+}
+
+void KItemListWidget::columnWidthChanged(const QByteArray &role, qreal current, qreal previous)
+{
+    Q_UNUSED(role)
+    Q_UNUSED(current)
+    Q_UNUSED(previous)
+}
+
+void KItemListWidget::sidePaddingChanged(qreal width)
+{
+    Q_UNUSED(width)
+}
+
+void KItemListWidget::styleOptionChanged(const KItemListStyleOption &current, const KItemListStyleOption &previous)
+{
+    Q_UNUSED(previous)
+
+    // set the initial value of m_iconSize if not set
+    if (m_iconSize == -1) {
+        m_iconSize = current.iconSize;
+    }

 }
 
 void KItemListWidget::currentChanged(bool current)
 {
 }
 
 void KItemListWidget::currentChanged(bool current)
 {

-    Q_UNUSED(current);
+    Q_UNUSED(current)

 }
 
 void KItemListWidget::selectedChanged(bool selected)
 {
 }
 
 void KItemListWidget::selectedChanged(bool selected)
 {

-    Q_UNUSED(selected);
+    Q_UNUSED(selected)

 }
 
 void KItemListWidget::hoveredChanged(bool hovered)
 {
 }
 
 void KItemListWidget::hoveredChanged(bool hovered)
 {

-    Q_UNUSED(hovered);
+    Q_UNUSED(hovered)
+}
+
+void KItemListWidget::alternateBackgroundChanged(bool enabled)
+{
+    Q_UNUSED(enabled)
+}
+
+void KItemListWidget::siblingsInformationChanged(const QBitArray &current, const QBitArray &previous)
+{
+    Q_UNUSED(current)
+    Q_UNUSED(previous)

 }
 
 }
 

-void KItemListWidget::resizeEvent(QGraphicsSceneResizeEvent* event)
+void KItemListWidget::editedRoleChanged(const QByteArray &current, const QByteArray &previous)
+{
+    Q_UNUSED(current)
+    Q_UNUSED(previous)
+}
+
+void KItemListWidget::iconSizeChanged(int current, int previous)
+{
+    Q_UNUSED(current)
+    Q_UNUSED(previous)
+}
+
+void KItemListWidget::resizeEvent(QGraphicsSceneResizeEvent *event)

 {
     QGraphicsWidget::resizeEvent(event);
 {
     QGraphicsWidget::resizeEvent(event);

-    clearCache();
+    clearHoverCache();
+
+    if (m_selectionToggle) {
+        const QRectF &toggleRect = selectionToggleRect();
+        m_selectionToggle->setPos(toggleRect.topLeft());
+        m_selectionToggle->resize(toggleRect.size());
+    }
+}
+
+void KItemListWidget::hoverSequenceStarted()
+{
+}
+
+void KItemListWidget::hoverSequenceIndexChanged(int sequenceIndex)
+{
+    Q_UNUSED(sequenceIndex);
+}
+
+void KItemListWidget::hoverSequenceEnded()
+{

 }
 
 qreal KItemListWidget::hoverOpacity() const
 }
 
 qreal KItemListWidget::hoverOpacity() const


@@ -308,16 +545,62 @@ qreal KItemListWidget::hoverOpacity() const
     return m_hoverOpacity;
 }
 
     return m_hoverOpacity;
 }
 

+int KItemListWidget::hoverSequenceIndex() const
+{
+    return m_hoverSequenceIndex;
+}
+
+void KItemListWidget::slotHoverSequenceTimerTimeout()
+{
+    m_hoverSequenceIndex++;
+    hoverSequenceIndexChanged(m_hoverSequenceIndex);
+}
+
+void KItemListWidget::initializeSelectionToggle()
+{
+    Q_ASSERT(m_enabledSelectionToggle);
+
+    if (!m_selectionToggle) {
+        m_selectionToggle = new KItemListSelectionToggle(this);
+    }
+
+    const QRectF toggleRect = selectionToggleRect();
+    m_selectionToggle->setPos(toggleRect.topLeft());
+    m_selectionToggle->resize(toggleRect.size());
+
+    m_selectionToggle->setChecked(isSelected());
+}
+

 void KItemListWidget::setHoverOpacity(qreal opacity)
 {
     m_hoverOpacity = opacity;
 void KItemListWidget::setHoverOpacity(qreal opacity)
 {
     m_hoverOpacity = opacity;

+    if (m_selectionToggle) {
+        m_selectionToggle->setOpacity(opacity);
+    }
+
+    if (m_hoverOpacity <= 0.0) {
+        delete m_hoverCache;
+        m_hoverCache = nullptr;
+    }
+

     update();
 }
 
     update();
 }
 

-void KItemListWidget::clearCache()
+void KItemListWidget::clearHoverCache()

 {
     delete m_hoverCache;
 {
     delete m_hoverCache;

-    m_hoverCache = 0;
+    m_hoverCache = nullptr;
+}
+
+void KItemListWidget::drawItemStyleOption(QPainter *painter, QWidget *widget, QStyle::State styleState)
+{
+    QStyleOptionViewItem viewItemOption;
+    initStyleOption(&viewItemOption);
+    viewItemOption.state = styleState;
+    viewItemOption.viewItemPosition = QStyleOptionViewItem::OnlyOne;
+    viewItemOption.showDecorationSelected = true;
+    viewItemOption.rect = selectionRect().toRect();
+    style()->drawPrimitive(QStyle::PE_PanelItemViewItem, &viewItemOption, painter, widget);

 }
 
 }
 

-#include "kitemlistwidget.moc"
+#include "moc_kitemlistwidget.cpp"