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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** 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.
**
****************************************************************************/
#include "iconcheckboxitemdelegate.h"
#include <qmath.h>
#include "navigatorview.h"
#include "navigatortreeview.h"
#include "navigatortreemodel.h"
#include "qproxystyle.h"
#include <metainfo.h>
#include <theme.h>
#include <utils/qtcassert.h>
#include <QLineEdit>
#include <QPen>
#include <QPixmapCache>
#include <QMouseEvent>
#include <QPainter>
namespace QmlDesigner {
IconCheckboxItemDelegate::IconCheckboxItemDelegate(QObject *parent, const QIcon &icon)
: QStyledItemDelegate(parent),
m_icon(icon)
{}
QSize IconCheckboxItemDelegate::sizeHint(const QStyleOptionViewItem & /*option*/,
const QModelIndex & /*modelIndex*/) const
{
return {15, 20};
}
static bool isChecked(const QModelIndex &modelIndex)
{
return modelIndex.model()->data(modelIndex, Qt::CheckStateRole) == Qt::Checked;
}
static bool isThisOrAncestorLocked(const QModelIndex &modelIndex)
{
return modelIndex.model()->data(modelIndex, ItemOrAncestorLocked).toBool();
}
static ModelNode getModelNode(const QModelIndex &modelIndex)
{
return modelIndex.model()->data(modelIndex, ModelNodeRole).value<ModelNode>();
}
static bool rowIsPropertyRole(const QAbstractItemModel *model, const QModelIndex &modelIndex)
{
return model->data(modelIndex, RowIsPropertyRole).toBool();
}
void IconCheckboxItemDelegate::paint(QPainter *painter,
const QStyleOptionViewItem &styleOption,
const QModelIndex &modelIndex) const
{
QIcon::Mode mode = QIcon::Mode::Normal;
if (styleOption.state & QStyle::State_MouseOver && !isThisOrAncestorLocked(modelIndex)) {
painter->fillRect(styleOption.rect.adjusted(0, delegateMargin, 0, -delegateMargin),
Theme::getColor(Theme::Color::DSnavigatorItemBackgroundHover));
mode = QIcon::Mode::Active; // hover
}
if (styleOption.state & QStyle::State_Selected) {
NavigatorTreeView::drawSelectionBackground(painter, styleOption);
mode = QIcon::Mode::Selected;
}
bool isVisibilityIcon = modelIndex.column() != NavigatorTreeModel::ColumnType::Visibility;
// We need to invert the check status if visibility icon
bool checked = isVisibilityIcon ? isChecked(modelIndex) : !isChecked(modelIndex);
if (!(styleOption.state & QStyle::State_MouseOver) && !checked)
return;
if (rowIsPropertyRole(modelIndex.model(), modelIndex) || getModelNode(modelIndex).isRootNode())
return; // Do not paint icons for property rows or root node
QWindow *window = dynamic_cast<QWidget*>(painter->device())->window()->windowHandle();
QTC_ASSERT(window, return);
const QSize iconSize(16, 16);
const QPoint iconPosition(styleOption.rect.left() + (styleOption.rect.width() - iconSize.width()) / 2,
styleOption.rect.top() + 2 + delegateMargin);
const QIcon::State state = isChecked(modelIndex) ? QIcon::State::On : QIcon::State::Off;
const QPixmap iconPixmap = m_icon.pixmap(window, iconSize, mode, state);
painter->save();
if (isThisOrAncestorLocked(modelIndex))
painter->setOpacity(0.5);
painter->drawPixmap(iconPosition, iconPixmap);
painter->restore();
}
bool IconCheckboxItemDelegate::editorEvent(QEvent *event,
QAbstractItemModel *model,
const QStyleOptionViewItem &option,
const QModelIndex &index)
{
Q_ASSERT(event);
Q_ASSERT(model);
// make sure that the item is checkable
Qt::ItemFlags flags = model->flags(index);
if (!(flags & Qt::ItemIsUserCheckable) || !(option.state & QStyle::State_Enabled)
|| !(flags & Qt::ItemIsEnabled))
return false;
// make sure that we have a check state
QVariant value = index.data(Qt::CheckStateRole);
if (!value.isValid())
return false;
// make sure that we have the right event type
if ((event->type() == QEvent::MouseButtonRelease)
|| (event->type() == QEvent::MouseButtonDblClick)
|| (event->type() == QEvent::MouseButtonPress)) {
QMouseEvent *me = static_cast<QMouseEvent*>(event);
if (me->button() != Qt::LeftButton || !option.rect.contains(me->pos()))
return false;
if ((event->type() == QEvent::MouseButtonPress)
|| (event->type() == QEvent::MouseButtonDblClick))
return true;
} else if (event->type() == QEvent::KeyPress) {
if (static_cast<QKeyEvent*>(event)->key() != Qt::Key_Space
&& static_cast<QKeyEvent*>(event)->key() != Qt::Key_Select)
return false;
} else {
return false;
}
Qt::CheckState state = static_cast<Qt::CheckState>(value.toInt());
if (flags & Qt::ItemIsUserTristate)
state = ((Qt::CheckState)((state + 1) % 3));
else
state = (state == Qt::Checked) ? Qt::Unchecked : Qt::Checked;
return model->setData(index, state, Qt::CheckStateRole);
}
} // namespace QmlDesigner
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