itsmattkc
81c1922911
This makes the node system somewhat more high-level with the intent of making working with them far more flexible and stable. By making the architecture more abstracted, it becomes far less rigid which should allow us to do even more with it and make it much less crash prone.
173 lines
4.1 KiB
C++
173 lines
4.1 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2020 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 NODEVIEWITEM_H
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#define NODEVIEWITEM_H
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#include <QFontMetrics>
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#include <QGraphicsRectItem>
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#include <QLinearGradient>
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#include <QWidget>
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#include "node/node.h"
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#include "nodeviewcommon.h"
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namespace olive {
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class NodeViewEdge;
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/**
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* @brief A visual widget representation of a Node object to be used in a NodeView
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*
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* This widget can be collapsed or expanded to show/hide the node's various parameters.
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*
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* To retrieve the NodeViewItem for a certain Node, use NodeView::NodeToUIObject().
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*/
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class NodeViewItem : public QGraphicsRectItem
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{
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public:
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NodeViewItem(QGraphicsItem* parent = nullptr);
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QPointF GetNodePosition() const;
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void SetNodePosition(const QPointF& pos);
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/**
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* @brief Set the Node to correspond to this widget
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*/
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void SetNode(Node* n);
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/**
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* @brief Get currently attached node
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*/
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Node* GetNode() const
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{
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return node_;
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}
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/**
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* @brief Get expanded state
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*/
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bool IsExpanded() const
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{
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return expanded_;
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}
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/**
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* @brief Set expanded state
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*/
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void SetExpanded(bool e, bool hide_titlebar = false);
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void ToggleExpanded();
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/**
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* @brief Returns GLOBAL point that edges should connect to for any NodeParam member of this object
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*/
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QPointF GetInputPoint(const QString& input, int element, const QPointF &source_pos) const;
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QPointF GetOutputPoint(const QString &output) const;
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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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static int DefaultTextPadding();
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static int DefaultItemHeight();
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static int DefaultItemWidth();
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static int DefaultItemBorder();
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qreal DefaultItemHorizontalPadding() const;
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qreal DefaultItemVerticalPadding() const;
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void AddEdge(NodeViewEdge* edge);
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void RemoveEdge(NodeViewEdge* edge);
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int GetIndexAt(QPointF pt) const;
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NodeInput GetInputAtIndex(int index) const
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{
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return NodeInput(node_, node_inputs_.at(index));
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}
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void SetHighlightedIndex(int index);
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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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virtual void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
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virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
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virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
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virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
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virtual QVariant itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value) override;
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private:
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void ReadjustAllEdges();
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/**
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* @brief Returns local rect of a NodeInput in array node_inputs_[index]
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*/
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QRectF GetInputRect(int index) const;
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/**
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* @brief Returns local point that edges should connect to for a NodeInput in array node_inputs_[index]
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*/
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QPointF GetInputPointInternal(int index, const QPointF &source_pos) const;
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/**
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* @brief Reference to attached Node
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*/
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Node* node_;
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/**
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* @brief Cached list of node inputs
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*/
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QVector<QString> node_inputs_;
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/**
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* @brief Rectangle of the Node's title bar (equal to rect() when collapsed)
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*/
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QRectF title_bar_rect_;
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/// Sizing variables to use when drawing
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int node_border_width_;
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/**
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* @brief Expanded state
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*/
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bool expanded_;
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bool hide_titlebar_;
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int highlighted_index_;
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NodeViewCommon::FlowDirection flow_dir_;
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QVector<NodeViewEdge*> edges_;
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};
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}
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#endif // NODEVIEWITEM_H
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