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baldurk
65 lines
2.4 KiB
C++
65 lines
2.4 KiB
C++
/******************************************************************************
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* The MIT License (MIT)
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*
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* Copyright (c) 2017 Baldur Karlsson
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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******************************************************************************/
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#include "RDTreeView.h"
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#include <QPainter>
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RDTreeView::RDTreeView(QWidget *parent) : QTreeView(NULL)
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{
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}
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void RDTreeView::drawBranches(QPainter *painter, const QRect &rect, const QModelIndex &index) const
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{
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if(m_DrawBranches)
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{
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QTreeView::drawBranches(painter, rect, index);
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}
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else
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{
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// draw only the expand item, not the branches
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QRect primitive(0, rect.top(), indentation(), rect.height());
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// if root isn't decorated, skip
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if(!rootIsDecorated() && !index.parent().isValid())
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return;
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// if no children, nothing to render
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if(model()->rowCount(index) == 0)
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return;
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QStyleOptionViewItem opt = viewOptions();
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opt.rect = primitive;
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// unfortunately QStyle::State_Children doesn't render ONLY the
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// open-toggle-button, but the vertical line upwards to a previous sibling.
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// For consistency, draw one downwards too.
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opt.state = QStyle::State_Children | QStyle::State_Sibling;
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if(isExpanded(index))
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opt.state |= QStyle::State_Open;
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style()->drawPrimitive(QStyle::PE_IndicatorBranch, &opt, painter, this);
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}
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}
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