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129 lines
5.0 KiB
C++
129 lines
5.0 KiB
C++
//##################################################################################################
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//
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// Custom Visualization Core library
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// Copyright (C) Ceetron Solutions AS
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//
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// This library may be used under the terms of either the GNU General Public License or
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// the GNU Lesser General Public License as follows:
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//
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// GNU General Public License Usage
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// This library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>>
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// for more details.
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//
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// GNU Lesser General Public License Usage
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU Lesser General Public License at <<http://www.gnu.org/licenses/lgpl-2.1.html>>
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// for more details.
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//
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//##################################################################################################
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#include "cafPdmUiCheckBoxDelegate.h"
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#include <QApplication>
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#include <QMouseEvent>
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namespace caf
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{
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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PdmUiCheckBoxDelegate::PdmUiCheckBoxDelegate(QObject* pParent)
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: QStyledItemDelegate(pParent)
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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PdmUiCheckBoxDelegate::~PdmUiCheckBoxDelegate()
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void PdmUiCheckBoxDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
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{
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QStyleOptionViewItemV4 viewItemOption(option);
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const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
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QRect newRect = QStyle::alignedRect(option.direction, Qt::AlignCenter,
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QSize(option.decorationSize.width() + 5,option.decorationSize.height()),
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QRect(option.rect.x() + textMargin, option.rect.y(),
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option.rect.width() - (2 * textMargin), option.rect.height()));
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viewItemOption.rect = newRect;
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QStyledItemDelegate::paint(painter, viewItemOption, index);
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}
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//--------------------------------------------------------------------------------------------------
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/// Returns true to avoid other factories to produce editors for a check box
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//--------------------------------------------------------------------------------------------------
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bool PdmUiCheckBoxDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem &option, const QModelIndex &index)
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{
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Q_ASSERT(event);
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Q_ASSERT(model);
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// make sure that the item is checkable
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Qt::ItemFlags flags = model->flags(index);
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if (!(flags & Qt::ItemIsUserCheckable) || !(flags & Qt::ItemIsEnabled))
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return false;
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// make sure that we have a check state
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QVariant value = index.data(Qt::CheckStateRole);
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if (!value.isValid())
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return false;
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// make sure that we have the right event type
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if (event->type() == QEvent::MouseButtonRelease)
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{
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const int textMargin = QApplication::style()->pixelMetric(QStyle::PM_FocusFrameHMargin) + 1;
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QRect checkRect = QStyle::alignedRect(option.direction, Qt::AlignCenter,
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option.decorationSize,
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QRect(option.rect.x() + (2 * textMargin), option.rect.y(),
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option.rect.width() - (2 * textMargin),
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option.rect.height()));
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if (!checkRect.contains(static_cast<QMouseEvent*>(event)->pos()))
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return true;
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}
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else if (event->type() == QEvent::KeyPress)
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{
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if (static_cast<QKeyEvent*>(event)->key() != Qt::Key_Space && static_cast<QKeyEvent*>(event)->key() != Qt::Key_Select)
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return true;
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}
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else
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{
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return true;
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}
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Qt::CheckState state = (static_cast<Qt::CheckState>(value.toInt()) == Qt::Checked ? Qt::Unchecked : Qt::Checked);
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return model->setData(index, state, Qt::CheckStateRole);
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}
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} // end namespace caf
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