1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
/***
Olive - Non-Linear Video Editor
Copyright (C) 2019 Olive Team
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#ifndef NODEVIEWITEM_H
#define NODEVIEWITEM_H
#include <QFontMetrics>
#include <QGraphicsRectItem>
#include <QLinearGradient>
#include <QUndoCommand>
#include <QWidget>
#include "node/node.h"
#include "nodeviewcommon.h"
#include "nodeviewedge.h"
#include "nodeviewitemwidgetproxy.h"
OLIVE_NAMESPACE_ENTER
/**
* @brief A visual widget representation of a Node object to be used in a NodeView
*
* This widget can be collapsed or expanded to show/hide the node's various parameters.
*
* To retrieve the NodeViewItem for a certain Node, use NodeView::NodeToUIObject().
*/
class NodeViewItem : public QGraphicsRectItem
{
public:
NodeViewItem(QGraphicsItem* parent = nullptr);
QPointF GetNodePosition() const;
void SetNodePosition(const QPointF& pos);
/**
* @brief Set the Node to correspond to this widget
*/
void SetNode(Node* n);
/**
* @brief Get currently attached node
*/
Node* GetNode() const;
/**
* @brief Get expanded state
*/
bool IsExpanded() const;
/**
* @brief Set expanded state
*/
void SetExpanded(bool e, bool hide_titlebar = false);
void ToggleExpanded();
/**
* @brief Returns GLOBAL point that edges should connect to for any NodeParam member of this object
*/
QPointF GetParamPoint(NodeParam* param, const QPointF &source_pos) const;
/**
* @brief Sets the direction nodes are flowing
*/
void SetFlowDirection(NodeViewCommon::FlowDirection dir);
static int DefaultTextPadding();
static int DefaultItemHeight();
static int DefaultItemWidth();
static int DefaultMaximumTextWidth();
static int DefaultItemBorder();
qreal DefaultItemHorizontalPadding() const;
qreal DefaultItemVerticalPadding() const;
protected:
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = nullptr) override;
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
virtual void mouseDoubleClickEvent(QGraphicsSceneMouseEvent *event) override;
virtual QVariant itemChange(QGraphicsItem::GraphicsItemChange change, const QVariant &value) override;
private:
/**
* @brief Highlight an input (for instance when the user is dragging over it)
*/
void SetHighlightedIndex(int index);
/**
* @brief Returns local rect of a NodeInput in array node_inputs_[index]
*/
QRectF GetInputRect(int index) const;
/**
* @brief Returns local point that edges should connect to for a NodeInput in array node_inputs_[index]
*/
QPointF GetInputPoint(int index, const QPointF &source_pos) const;
/**
* @brief Reference to attached Node
*/
Node* node_;
/**
* @brief Cached list of node inputs
*/
QList<NodeInput*> node_inputs_;
/**
* @brief Rectangle of the Node's title bar (equal to rect() when collapsed)
*/
QRectF title_bar_rect_;
/// Edge dragging variables
NodeViewEdge* dragging_edge_;
QPointF dragging_edge_start_;
NodeParam* drag_src_param_;
NodeParam* drag_dest_param_;
NodeViewItem* drag_source_;
NodeViewItem* cached_drop_item_;
bool cached_drop_item_expanded_;
/// Sizing variables to use when drawing
int node_border_width_;
/**
* @brief Expanded state
*/
bool expanded_;
bool hide_titlebar_;
/**
* @brief Current click mode
*
* \see mousePressEvent()
*/
bool standard_click_;
int highlighted_index_;
/**
* @brief QUndoCommand for creating and deleting edges by dragging
*
* \see mousePressEvent()
* \see mouseReleaseEvent()
*/
QUndoCommand* node_edge_change_command_;
NodeViewCommon::FlowDirection flow_dir_;
};
OLIVE_NAMESPACE_EXIT
#endif // NODEVIEWITEM_H
|
