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/*
* SPDX-FileCopyrightText: 2012 Peter Penz <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <QApplication>
#include "kstandarditemlistview.h"
#include "kstandarditemlistwidget.h"
#include <KIconLoader>
KStandardItemListView::KStandardItemListView(QGraphicsWidget *parent)
: KItemListView(parent)
, m_itemLayout(DetailsLayout)
{
setAcceptDrops(true);
setScrollOrientation(Qt::Vertical);
setVisibleRoles({"text"});
setAlternateBackgrounds(true);
}
KStandardItemListView::~KStandardItemListView() = default;
void KStandardItemListView::setItemLayout(ItemLayout layout)
{
if (m_itemLayout == layout) {
return;
}
beginTransaction();
const ItemLayout previous = m_itemLayout;
m_itemLayout = layout;
// keep the leading padding option unchanged here
setHighlightEntireRow(itemLayoutHighlightEntireRow(layout));
setSupportsItemExpanding(itemLayoutSupportsItemExpanding(layout));
setScrollOrientation(layout == CompactLayout ? Qt::Horizontal : Qt::Vertical);
onItemLayoutChanged(layout, previous);
endTransaction();
}
KStandardItemListView::ItemLayout KStandardItemListView::itemLayout() const
{
return m_itemLayout;
}
KItemListWidgetCreatorBase *KStandardItemListView::defaultWidgetCreator() const
{
return new KItemListWidgetCreator<KStandardItemListWidget>();
}
KItemListGroupHeaderCreatorBase *KStandardItemListView::defaultGroupHeaderCreator() const
{
return new KItemListGroupHeaderCreator<KStandardItemListGroupHeader>();
}
void KStandardItemListView::initializeItemListWidget(KItemListWidget *item)
{
KStandardItemListWidget *standardItemListWidget = qobject_cast<KStandardItemListWidget *>(item);
Q_ASSERT(standardItemListWidget);
switch (itemLayout()) {
case IconsLayout:
standardItemListWidget->setLayout(KStandardItemListWidget::IconsLayout);
break;
case CompactLayout:
standardItemListWidget->setLayout(KStandardItemListWidget::CompactLayout);
break;
case DetailsLayout:
standardItemListWidget->setLayout(KStandardItemListWidget::DetailsLayout);
break;
default:
Q_ASSERT(false);
break;
}
standardItemListWidget->setHighlightEntireRow(highlightEntireRow());
standardItemListWidget->setSupportsItemExpanding(supportsItemExpanding());
}
bool KStandardItemListView::itemSizeHintUpdateRequired(const QSet<QByteArray> &changedRoles) const
{
// The only thing that can modify the item's size hint is the amount of space
// needed to display the text for the visible roles.
// Even if the icons have a different size they are always aligned within
// the area defined by KItemStyleOption.iconSize and hence result in no
// change of the item-size.
const auto roles = visibleRoles();
for (const QByteArray &role : roles) {
if (changedRoles.contains(role)) {
return true;
}
}
return false;
}
bool KStandardItemListView::itemLayoutHighlightEntireRow(ItemLayout layout) const
{
return layout == DetailsLayout;
}
bool KStandardItemListView::itemLayoutSupportsItemExpanding(ItemLayout layout) const
{
return layout == DetailsLayout;
}
qreal KStandardItemListView::scrollSingleStep() const
{
if (itemLayout() == DetailsLayout) {
// We want each scroll in details view mode to move by some number of complete rows.
const int rowsPerFullScroll = qCeil((KItemListView::scrollSingleStep() * QApplication::wheelScrollLines()) / itemSize().height());
return (rowsPerFullScroll * itemSize().height()) / QApplication::wheelScrollLines();
}
return KItemListView::scrollSingleStep();
}
void KStandardItemListView::onItemLayoutChanged(ItemLayout current, ItemLayout previous)
{
Q_UNUSED(current)
Q_UNUSED(previous)
updateLayoutOfVisibleItems();
}
void KStandardItemListView::onScrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous)
{
Q_UNUSED(current)
Q_UNUSED(previous)
updateLayoutOfVisibleItems();
}
void KStandardItemListView::onSupportsItemExpandingChanged(bool supportsExpanding)
{
Q_UNUSED(supportsExpanding)
updateLayoutOfVisibleItems();
}
void KStandardItemListView::polishEvent()
{
switch (m_itemLayout) {
case IconsLayout:
applyDefaultStyleOption(style()->pixelMetric(QStyle::PM_LargeIconSize), 2, 4, 8);
break;
case CompactLayout:
applyDefaultStyleOption(style()->pixelMetric(QStyle::PM_SmallIconSize), 2, 8, 0);
break;
case DetailsLayout:
applyDefaultStyleOption(style()->pixelMetric(QStyle::PM_SmallIconSize), 2, 0, 0);
break;
default:
Q_ASSERT(false);
break;
}
QGraphicsWidget::polishEvent();
}
void KStandardItemListView::applyDefaultStyleOption(int iconSize, int padding, int horizontalMargin, int verticalMargin)
{
KItemListStyleOption option = styleOption();
if (option.iconSize < 0) {
option.iconSize = iconSize;
}
if (option.padding < 0) {
option.padding = padding;
}
if (option.horizontalMargin < 0) {
option.horizontalMargin = horizontalMargin;
}
if (option.verticalMargin < 0) {
option.verticalMargin = verticalMargin;
}
setStyleOption(option);
}
void KStandardItemListView::updateLayoutOfVisibleItems()
{
if (model()) {
const auto widgets = visibleItemListWidgets();
for (KItemListWidget *widget : widgets) {
initializeItemListWidget(widget);
}
}
}
#include "moc_kstandarditemlistview.cpp"
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