85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2021 Olive Team
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This program 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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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "nodeviewitemconnector.h"
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#include <QApplication>
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#include <QFontMetrics>
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#include <QPalette>
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#include <QPen>
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#include "nodeviewitem.h"
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namespace olive {
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NodeViewItemConnector::NodeViewItemConnector(bool is_output, QGraphicsItem *parent) :
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QGraphicsPolygonItem(parent),
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output_(is_output)
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{
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QColor c = qApp->palette().text().color();
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setPen(QPen(c, NodeViewItem::DefaultItemBorder()));
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setBrush(c);
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}
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void NodeViewItemConnector::SetFlowDirection(NodeViewCommon::FlowDirection dir)
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{
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QFont f;
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QFontMetricsF fm(f);
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int triangle_sz = fm.height()/2;
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int triangle_sz_half = triangle_sz / 2;
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QPolygonF p;
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p.resize(3);
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switch (dir) {
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case NodeViewCommon::kLeftToRight:
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// Triangle pointing right
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p[0] = QPointF(0, -triangle_sz_half);
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p[1] = QPointF(triangle_sz_half, 0);
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p[2] = QPointF(0, triangle_sz_half);
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break;
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case NodeViewCommon::kTopToBottom:
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// Triangle pointing down
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p[0] = QPointF(-triangle_sz_half, 0);
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p[1] = QPointF(0, triangle_sz_half);
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p[2] = QPointF(triangle_sz_half, 0);
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break;
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case NodeViewCommon::kBottomToTop:
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// Triangle pointing up
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p[0] = QPointF(-triangle_sz_half, 0);
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p[1] = QPointF(0, -triangle_sz_half);
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p[2] = QPointF(triangle_sz_half, 0);
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break;
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case NodeViewCommon::kRightToLeft:
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// Triangle pointing left
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p[0] = QPointF(0, -triangle_sz_half);
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p[1] = QPointF(-triangle_sz_half, 0);
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p[2] = QPointF(0, triangle_sz_half);
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break;
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case NodeViewCommon::kInvalidDirection:
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break;
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}
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setPolygon(p);
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}
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}
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