151 lines
3.2 KiB
C++
151 lines
3.2 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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#ifndef NODEEDGEITEM_H
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#define NODEEDGEITEM_H
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#include <QGraphicsPathItem>
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#include <QPalette>
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#include "nodeviewcommon.h"
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#include "node/node.h"
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namespace olive {
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class NodeViewItem;
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/**
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* @brief A graphical representation of a NodeEdge to be used in NodeView
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*
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* A fairly simple line widget use to visualize a connection between two node parameters (a NodeEdge).
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*/
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class NodeViewEdge : public QGraphicsPathItem
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{
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public:
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NodeViewEdge(Node *output, const NodeInput& input,
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NodeViewItem* from_item, NodeViewItem* to_item,
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QGraphicsItem* parent = nullptr);
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NodeViewEdge(QGraphicsItem* parent = nullptr);
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Node *output() const
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{
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return output_;
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}
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const NodeInput& input() const
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{
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return input_;
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}
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int element() const
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{
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return element_;
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}
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NodeViewItem* from_item() const
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{
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return from_item_;
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}
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NodeViewItem* to_item() const
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{
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return to_item_;
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}
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void Adjust();
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/**
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* @brief Set the connected state of this line
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*
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* When the edge is not connected, it visually depicts this by coloring the line grey. When an edge is connected or
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* a potential connection is valid, the line is colored white. This function sets whether the line should be grey
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* (false) or white (true).
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*
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* Using SetEdge() automatically sets this to true. Under most circumstances this should be left alone, and only
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* be set when an edge is being created/dragged.
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*/
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void SetConnected(bool c);
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bool IsConnected() const
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{
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return connected_;
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}
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/**
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* @brief Set highlighted state
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*
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* Changes color of edge.
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*/
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void SetHighlighted(bool e);
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/**
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* @brief Set points to create curve from
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*/
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void SetPoints(const QPointF& start, const QPointF& end, bool input_is_expanded);
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/**
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* @brief Sets the direction nodes are flowing
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*/
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void SetFlowDirection(NodeViewCommon::FlowDirection dir);
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/**
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* @brief Set whether edges should be drawn as curved or as straight lines
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*/
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void SetCurved(bool e);
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protected:
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virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
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private:
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void Init();
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void UpdateCurve();
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Node *output_;
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NodeInput input_;
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int element_;
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NodeViewItem* from_item_;
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NodeViewItem* to_item_;
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int edge_width_;
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bool connected_;
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bool highlighted_;
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NodeViewCommon::FlowDirection flow_dir_;
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bool curved_;
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QPointF cached_start_;
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QPointF cached_end_;
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bool cached_input_is_expanded_;
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};
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}
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#endif // NODEEDGEITEM_H
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