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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0+ OR GPL-3.0 WITH Qt-GPL-exception-1.0
#include "opendocumentstreeview.h"
#include <utils/utilsicons.h>
#include <QApplication>
#include <QHeaderView>
#include <QPainter>
#include <QStyledItemDelegate>
namespace Core {
namespace Internal {
class OpenDocumentsDelegate : public QStyledItemDelegate
{
public:
explicit OpenDocumentsDelegate(QObject *parent = nullptr);
void setCloseButtonVisible(bool visible);
void handlePressed(const QModelIndex &index);
void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const override;
mutable QModelIndex pressedIndex;
bool closeButtonVisible = true;
};
OpenDocumentsDelegate::OpenDocumentsDelegate(QObject *parent)
: QStyledItemDelegate(parent)
{
}
void OpenDocumentsDelegate::setCloseButtonVisible(bool visible)
{
closeButtonVisible = visible;
}
void OpenDocumentsDelegate::handlePressed(const QModelIndex &index)
{
if (index.column() == 1)
pressedIndex = index;
}
void OpenDocumentsDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
if (option.state & QStyle::State_MouseOver) {
if ((QApplication::mouseButtons() & Qt::LeftButton) == 0)
pressedIndex = QModelIndex();
QBrush brush = option.palette.alternateBase();
if (index == pressedIndex)
brush = option.palette.dark();
painter->fillRect(option.rect, brush);
}
QStyledItemDelegate::paint(painter, option, index);
if (closeButtonVisible && index.column() == 1 && option.state & QStyle::State_MouseOver) {
const QIcon icon = (option.state & QStyle::State_Selected) ?
Utils::Icons::CLOSE_BACKGROUND.icon()
: Utils::Icons::CLOSE_FOREGROUND.icon();
QRect iconRect(option.rect.right() - option.rect.height(),
option.rect.top(),
option.rect.height(),
option.rect.height());
icon.paint(painter, iconRect, Qt::AlignRight | Qt::AlignVCenter);
}
}
} // namespace Internal
OpenDocumentsTreeView::OpenDocumentsTreeView(QWidget *parent) :
Utils::TreeView(parent)
{
m_delegate = new Internal::OpenDocumentsDelegate(this);
setItemDelegate(m_delegate);
setRootIsDecorated(false);
setUniformRowHeights(true);
setTextElideMode(Qt::ElideMiddle);
setFrameStyle(QFrame::NoFrame);
setAttribute(Qt::WA_MacShowFocusRect, false);
setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
viewport()->setAttribute(Qt::WA_Hover);
setSelectionMode(QAbstractItemView::SingleSelection);
setSelectionBehavior(QAbstractItemView::SelectRows);
setActivationMode(Utils::SingleClickActivation);
installEventFilter(this);
viewport()->installEventFilter(this);
connect(this, &OpenDocumentsTreeView::pressed,
m_delegate, &Internal::OpenDocumentsDelegate::handlePressed);
}
void OpenDocumentsTreeView::setModel(QAbstractItemModel *model)
{
Utils::TreeView::setModel(model);
header()->hide();
header()->setStretchLastSection(false);
header()->setSectionResizeMode(0, QHeaderView::Stretch);
header()->setSectionResizeMode(1, QHeaderView::Fixed);
header()->setMinimumSectionSize(0);
header()->resizeSection(1, 16);
}
void OpenDocumentsTreeView::setCloseButtonVisible(bool visible)
{
m_delegate->setCloseButtonVisible(visible);
}
bool OpenDocumentsTreeView::eventFilter(QObject *obj, QEvent *event)
{
if (obj == this && event->type() == QEvent::KeyPress
&& currentIndex().isValid()) {
auto ke = static_cast<QKeyEvent*>(event);
if ((ke->key() == Qt::Key_Delete
|| ke->key() == Qt::Key_Backspace)
&& ke->modifiers() == 0) {
emit closeActivated(currentIndex());
}
} else if (obj == viewport()
&& event->type() == QEvent::MouseButtonRelease) {
auto me = static_cast<QMouseEvent*>(event);
if (me->button() == Qt::MiddleButton
&& me->modifiers() == Qt::NoModifier) {
QModelIndex index = indexAt(me->pos());
if (index.isValid()) {
emit closeActivated(index);
return true;
}
}
}
return false;
}
} // namespace Core
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