1 /**
2  * UGENE - Integrated Bioinformatics Tools.
3  * Copyright (C) 2008-2021 UniPro <ugene@unipro.ru>
4  * http://ugene.net
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
19  * MA 02110-1301, USA.
20  */
21 
22 #ifndef _U2_WORKFLOW_ITEM_STYLE_H_
23 #define _U2_WORKFLOW_ITEM_STYLE_H_
24 
25 #include <QAction>
26 #include <QGraphicsItem>
27 #include <QGraphicsScene>
28 #include <QTextDocument>
29 
30 class QDomElement;
31 
32 namespace U2 {
33 
34 class WorkflowProcessItem;
35 
36 const qreal R = 30;
37 const qreal A = 8;
38 
39 class ItemViewStyle : public QGraphicsObject {
40     Q_OBJECT
41 public:
42     ItemViewStyle(WorkflowProcessItem *p, const QString &id);
getId()43     QString getId() const {
44         return id;
45     }
46 
refresh()47     virtual void refresh() {
48     }
sceneEventFilter(QGraphicsItem *,QEvent *)49     virtual bool sceneEventFilter(QGraphicsItem *, QEvent *) {
50         return false;
51     }
getContextMenuActions()52     virtual QList<QAction *> getContextMenuActions() const {
53         return (QList<QAction *>() << bgColorAction << fontAction);
54     }
55     virtual void saveState(QDomElement &) const;
56     virtual void loadState(QDomElement &);
57     virtual QColor defaultColor() const = 0;
getBgColor()58     QColor getBgColor() const {
59         return bgColor;
60     }
setBgColor(const QColor & color)61     void setBgColor(const QColor &color) {
62         bgColor = color;
63     }
defaultFont()64     QFont defaultFont() const {
65         return defFont;
66     }
setDefaultFont(const QFont & font)67     void setDefaultFont(const QFont &font) {
68         defFont = font;
69     }
getOwner()70     WorkflowProcessItem const *getOwner() const {
71         return owner;
72     }
73 
74 protected:
75     WorkflowProcessItem *owner;
76     QColor bgColor;
77     QFont defFont;
78 
79     QAction *bgColorAction;
80     QAction *fontAction;
81     QString id;
82 
83 private slots:
84     void selectBGColor();
85     void selectFont();
86 };
87 
88 class SimpleProcStyle : public ItemViewStyle {
89 public:
90     SimpleProcStyle(WorkflowProcessItem *pit);
91     QRectF boundingRect(void) const;
92     QPainterPath shape() const;
93     QColor defaultColor() const;
94     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
95 };
96 
97 class DescriptionItem;
98 
99 class ExtendedProcStyle : public ItemViewStyle {
100     Q_OBJECT
101 public:
102     ExtendedProcStyle(WorkflowProcessItem *pit);
boundingRect(void)103     QRectF boundingRect(void) const {
104         return bounds;
105     }
106     QPainterPath shape() const;
107     QColor defaultColor() const;
108     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget = 0);
109     virtual void refresh();
110     virtual bool sceneEventFilter(QGraphicsItem *watched, QEvent *event);
111     virtual QList<QAction *> getContextMenuActions() const;
112     virtual void saveState(QDomElement &) const;
113     virtual void loadState(QDomElement &);
114 
isAutoResized()115     bool isAutoResized() const {
116         return autoResize;
117     }
118     void setFixedBounds(const QRectF &b);
119 
120     bool updateCursor(const QPointF &pos);
121 
122 signals:
123     void linkActivated(const QString &);
124 
125 private slots:
126     void setAutoResizeEnabled(bool b);
127     void linkHovered(const QString &);
128 
129 private:
130     QTextDocument *doc;
131     QRectF bounds;
132     bool autoResize;
133 
134     enum ResizeMode { NoResize = 0,
135                       RightResize = 1,
136                       LeftResize = 2,
137                       BottomResize = 4,
138                       TopResize = 8,
139                       RBResize = RightResize + BottomResize,
140                       RTResize = RightResize + TopResize,
141                       LBResize = LeftResize + BottomResize,
142                       LTResize = LeftResize + TopResize };
143     int resizing;
144 
145     QAction *resizeModeAction;
146     DescriptionItem *desc;
147     friend class DescriptionItem;
148 };
149 
150 class HintItem : public QGraphicsTextItem {
151 public:
152     HintItem(const QString &text, QGraphicsItem *parent);
153 
154 protected:
155     virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);
156     virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
157     virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
158 
159 private:
160     QPointF initPos;
161     bool dragging;
162 };
163 
164 class DescriptionItem : public QGraphicsTextItem {
165     Q_OBJECT
166 public:
167     DescriptionItem(ExtendedProcStyle *p);
168     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);
169 
170 protected:
171     QRectF boundingRect() const;
172     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
173     bool sceneEvent(QEvent *event);
174     void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);
175 };
176 
177 }  // namespace U2
178 
179 #endif
180