itsmattkc
323718bc11
Previous iteration used some "magic code" that added clips automatically to the timeline. This was functional but ultimately outside of the undo commands' control meaning nodes could be infinitely added and abandoned. This makes the add process part of the undo command which means it's all undoable as the user would expect.
161 lines
4.0 KiB
C++
161 lines
4.0 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 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 <QUndoCommand>
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#include <QWidget>
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#include "node/node.h"
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#include "nodeviewedge.h"
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#include "nodeviewitemwidgetproxy.h"
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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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/**
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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 noe
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*/
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Node* node();
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/**
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* @brief Get expanded state
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*/
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bool IsExpanded();
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/**
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* @brief Set expanded state
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*/
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void SetExpanded(bool e);
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/**
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* @brief Get the rectangle of a specific parameter connector
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*
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* Useful for drawing parameter connectors (white squares where the Node edges attach) or determining whether a click
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* or drag occurred within one.
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*
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* @param index
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*
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* Index of the parameter of this node (see NodeParam::index()).
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*/
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QRectF GetParameterConnectorRect(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 QVariant itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value) override;
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private:
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/**
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* @brief Get the relative position to draw text for a parameter at a certain index
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*/
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QPointF GetParameterTextPoint(int index);
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/**
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* @brief Variable for the expand/collapse button rect (stored for clicking)
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*/
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QRectF expand_hitbox_;
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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 A QWidget that can receive CSS properties that NodeViewItem can use
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*
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* \see NodeViewItemWidget
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*/
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NodeViewItemWidget css_proxy_;
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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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/**
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* @brief Rectangle of the Node's content (zero-size when collapsed, (rect() - title_bar_rect_) when expanded)
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*/
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QRectF content_rect_;
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/// Used to determine certain padding/margin variables for high DPI support
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QFont font;
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QFontMetrics font_metrics;
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/// Edge dragging variables
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NodeViewEdge* dragging_edge_;
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QPointF dragging_edge_start_;
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NodeParam* drag_src_param_;
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NodeParam* drag_dest_param_;
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NodeViewItem* drag_source_;
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NodeViewItem* drag_expanded_item_;
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/// Sizing variables to use when drawing
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int node_connector_size_;
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int node_text_padding_;
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int node_icon_padding_;
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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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/**
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* @brief Current click mode
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*
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* \see mousePressEvent()
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*/
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bool standard_click_;
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/**
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* @brief QUndoCommand for creating and deleting edges by dragging
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*
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* \see mousePressEvent()
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* \see mouseReleaseEvent()
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*/
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QUndoCommand* node_edge_change_command_;
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};
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#endif // NODEVIEWITEM_H
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