Engauge Digitizer 2
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GuidelineLine.h
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1/******************************************************************************************************
2 * (C) 2019 markummitchell@github.com. This file is part of Engauge Digitizer, which is released *
3 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
4 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission. *
5 ******************************************************************************************************/
6
7#ifndef GUIDELINE_LINE_H
8#define GUIDELINE_LINE_H
9
10#include "GuidelineAbstract.h"
11#include <QColor>
12#include <QGraphicsLineItem>
13
14class QMouseEvent;
15class QPainter;
16class QGraphicsScene;
17class QStyleOptionGraphicsItem;
18class QWidget;
19
21class GuidelineLine : public GuidelineAbstract, public QGraphicsLineItem
22{
23public:
25 GuidelineLine(QGraphicsScene &scene,
26 Guidelines &guidelines,
27 GuidelineState guidelineStateInitial,
28 const QString &identifier);
30
31 virtual bool getGraphicsItemAcceptHover () const;
32
33 virtual bool getGraphicsItemSelected () const;
34
35 virtual QGraphicsItem::GraphicsItemFlags graphicsItemFlags () const;
36
38 void handleVisibilityChange (bool visible);
39
41 virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);
42
44 virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);
45
46 virtual QString identifier () const;
47
49 virtual void mouseMoveEvent (QGraphicsSceneMouseEvent *event);
50
52 virtual void mousePressEvent(QGraphicsSceneMouseEvent *event);
53
55 virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *event);
56
58 virtual void paint(QPainter *painter,
59 const QStyleOptionGraphicsItem *option,
60 QWidget *widget = Q_NULLPTR);
61
62 virtual void removeFromScene (QGraphicsScene *scene);
63 virtual void setGraphicsItemAcceptHoverEvents (bool accept);
64 virtual void setGraphicsItemFlags (QGraphicsItem::GraphicsItemFlags flags);
65 virtual void setGraphicsItemLine (const QLineF &line);
66 virtual void setGraphicsItemPen (const QColor &color,
67 double lineWidth);
68 virtual void setGraphicsItemVisible (bool visible);
69 virtual void setGraphicsItemZValue (double z);
70 virtual void updateColor ();
71 virtual void updateGeometry (double valueGraph);
72 virtual void updateGeometry (const QPointF &posScreen);
73
74private:
76
77 // Forces use of setPenColor instead of QGraphicsLineItem::setPen
78 using QGraphicsLineItem::setPen;
79
80};
81
82#endif // GUIDELINE_LINE_H
GuidelineState
Set of possible Guideline states. See class Guideline for more information.
QGraphicsScene & scene()
GraphicsScene that owns this class.
GuidelineAbstract(QGraphicsScene &scene)
Single constructor.
virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event)
Unset highlighting triggered by hover enter.
virtual QGraphicsItem::GraphicsItemFlags graphicsItemFlags() const
Wraps QGraphicsItem::flags.
virtual void mouseMoveEvent(QGraphicsSceneMouseEvent *event)
Forward movements to visible Guideline.
virtual void setGraphicsItemZValue(double z)
Wrapper for QGraphicsItem::setZValue.
virtual void updateGeometry(double valueGraph)
Update the geometry so it passes through the specified coordinate value in graph coordinates.
virtual QString identifier() const
Unique identifier from QGraphicsItem.
GuidelineLine(QGraphicsScene &scene, Guidelines &guidelines, GuidelineState guidelineStateInitial, const QString &identifier)
Single constructor.
virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event)
Highlight this Guideline upon hover enter.
virtual void setGraphicsItemFlags(QGraphicsItem::GraphicsItemFlags flags)
Wrapper for QGraphicsItem::setFlags.
virtual void removeFromScene(QGraphicsScene *scene)
Make graphics item remove itself from the scene.
virtual void updateColor()
Force a color update.
virtual void mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
Cleanup after being dragged.
virtual void setGraphicsItemVisible(bool visible)
Wrapper for QGraphicsItem::setVisible.
void handleVisibilityChange(bool visible)
User toggled guideline visibility.
virtual void setGraphicsItemLine(const QLineF &line)
Wrapper for QGraphicsLineItem::setLine.
virtual bool getGraphicsItemAcceptHover() const
Return true if accepting hover events.
virtual void mousePressEvent(QGraphicsSceneMouseEvent *event)
Forward press event to state machine.
virtual bool getGraphicsItemSelected() const
Wrapper for QGraphicsItem::isSelected.
virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget=Q_NULLPTR)
Override painting so this disappears when selected. Selected Guidelines are never visible.
virtual void setGraphicsItemPen(const QColor &color, double lineWidth)
Wrapper for QGraphicsItem::setPen.
virtual void setGraphicsItemAcceptHoverEvents(bool accept)
Wrapper for QGraphicsItem::setAcceptHoverEvents.
This class contains all Guideline objects.
Definition Guidelines.h:28