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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Assistant module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "openpageswidget.h"
#include "centralwidget.h"
#include "openpagesmodel.h"
#include "tracer.h"
#include <QtWidgets/QApplication>
#include <QtWidgets/QHeaderView>
#include <QtGui/QKeyEvent>
#include <QtGui/QMouseEvent>
#include <QtWidgets/QMenu>
#include <QtGui/QPainter>
QT_BEGIN_NAMESPACE
OpenPagesDelegate::OpenPagesDelegate(QObject *parent)
: QStyledItemDelegate(parent)
{
TRACE_OBJ
}
void OpenPagesDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
TRACE_OBJ
if (option.state & QStyle::State_MouseOver) {
QT_WARNING_PUSH
QT_WARNING_DISABLE_DEPRECATED
if ((QApplication::mouseButtons() & Qt::LeftButton) == 0)
pressedIndex = QModelIndex();
QT_WARNING_POP
QBrush brush = option.palette.alternateBase();
if (index == pressedIndex)
brush = option.palette.dark();
painter->fillRect(option.rect, brush);
}
QStyledItemDelegate::paint(painter, option, index);
if (index.column() == 1 && index.model()->rowCount() > 1
&& option.state & QStyle::State_MouseOver) {
QIcon icon((option.state & QStyle::State_Selected)
? ":/qt-project.org/assistant/images/closebutton.png"
: ":/qt-project.org/assistant/images/darkclosebutton.png");
const 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);
}
}
// -- OpenPagesWidget
OpenPagesWidget::OpenPagesWidget(OpenPagesModel *model)
: m_allowContextMenu(true)
{
TRACE_OBJ
setModel(model);
setIndentation(0);
setItemDelegate((m_delegate = new OpenPagesDelegate(this)));
setTextElideMode(Qt::ElideMiddle);
setAttribute(Qt::WA_MacShowFocusRect, false);
viewport()->setAttribute(Qt::WA_Hover);
setSelectionBehavior(QAbstractItemView::SelectRows);
setSelectionMode(QAbstractItemView::SingleSelection);
header()->hide();
header()->setStretchLastSection(false);
header()->setSectionResizeMode(0, QHeaderView::Stretch);
header()->setSectionResizeMode(1, QHeaderView::Fixed);
header()->resizeSection(1, 18);
installEventFilter(this);
setUniformRowHeights(true);
setContextMenuPolicy(Qt::CustomContextMenu);
connect(this, &QAbstractItemView::clicked,
this, &OpenPagesWidget::handleClicked);
connect(this, &QAbstractItemView::pressed,
this, &OpenPagesWidget::handlePressed);
connect(this, &QWidget::customContextMenuRequested,
this, &OpenPagesWidget::contextMenuRequested);
}
OpenPagesWidget::~OpenPagesWidget()
{
TRACE_OBJ
}
void OpenPagesWidget::selectCurrentPage()
{
TRACE_OBJ
const QModelIndex ¤t =
model()->index(CentralWidget::instance()->currentIndex(), 0);
QItemSelectionModel * const selModel = selectionModel();
selModel->select(current,
QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
selModel->clearSelection();
setCurrentIndex(current);
scrollTo(currentIndex());
}
void OpenPagesWidget::allowContextMenu(bool ok)
{
TRACE_OBJ
m_allowContextMenu = ok;
}
void OpenPagesWidget::contextMenuRequested(QPoint pos)
{
TRACE_OBJ
QModelIndex index = indexAt(pos);
if (!index.isValid() || !m_allowContextMenu)
return;
if (index.column() == 1)
index = index.sibling(index.row(), 0);
QMenu contextMenu;
QAction *closeEditor = contextMenu.addAction(tr("Close %1").arg(index.data()
.toString()));
QAction *closeOtherEditors = contextMenu.addAction(tr("Close All Except %1")
.arg(index.data().toString()));
if (model()->rowCount() == 1) {
closeEditor->setEnabled(false);
closeOtherEditors->setEnabled(false);
}
QAction *action = contextMenu.exec(mapToGlobal(pos));
if (action == closeEditor)
emit closePage(index);
else if (action == closeOtherEditors)
emit closePagesExcept(index);
}
void OpenPagesWidget::handlePressed(const QModelIndex &index)
{
TRACE_OBJ
if (index.column() == 0)
emit setCurrentPage(index);
if (index.column() == 1)
m_delegate->pressedIndex = index;
}
void OpenPagesWidget::handleClicked(const QModelIndex &index)
{
TRACE_OBJ
// implemented here to handle the funky close button and to work around a
// bug in item views where the delegate wouldn't get the QStyle::State_MouseOver
if (index.column() == 1) {
if (model()->rowCount() > 1)
emit closePage(index);
QWidget *vp = viewport();
const QPoint &cursorPos = QCursor::pos();
QMouseEvent e(QEvent::MouseMove, vp->mapFromGlobal(cursorPos), cursorPos,
Qt::NoButton, {}, {});
QCoreApplication::sendEvent(vp, &e);
}
}
bool OpenPagesWidget::eventFilter(QObject *obj, QEvent *event)
{
TRACE_OBJ
if (obj != this)
return QWidget::eventFilter(obj, event);
if (event->type() == QEvent::KeyPress) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (currentIndex().isValid() && ke->modifiers() == 0) {
const int key = ke->key();
if (key == Qt::Key_Return || key == Qt::Key_Enter
|| key == Qt::Key_Space) {
emit setCurrentPage(currentIndex());
} else if ((key == Qt::Key_Delete || key == Qt::Key_Backspace)
&& model()->rowCount() > 1) {
emit closePage(currentIndex());
}
}
} else if (event->type() == QEvent::KeyRelease) {
QKeyEvent *ke = static_cast<QKeyEvent*>(event);
if (ke->modifiers() == 0
&& (ke->key() == Qt::Key_Up || ke->key() == Qt::Key_Down)) {
emit setCurrentPage(currentIndex());
}
}
return QWidget::eventFilter(obj, event);
}
QT_END_NAMESPACE
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