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
|
/*
* SPDX-FileCopyrightText: 2011 Peter Penz <[email protected]>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef KITEMLISTHEADERWIDGET_H
#define KITEMLISTHEADERWIDGET_H
#include "dolphin_export.h"
#include <QGraphicsWidget>
#include <QHash>
#include <QList>
class KItemModelBase;
/**
* @brief Widget the implements the header for KItemListView showing the currently used roles.
*
* The widget is an internal API, the user of KItemListView may only access the
* class KItemListHeader.
*/
class DOLPHIN_EXPORT KItemListHeaderWidget : public QGraphicsWidget
{
Q_OBJECT
public:
explicit KItemListHeaderWidget(QGraphicsWidget* parent = nullptr);
~KItemListHeaderWidget() override;
void setModel(KItemModelBase* model);
KItemModelBase* model() const;
void setAutomaticColumnResizing(bool automatic);
bool automaticColumnResizing() const;
void setColumns(const QList<QByteArray>& roles);
QList<QByteArray> columns() const;
void setColumnWidth(const QByteArray& role, qreal width);
qreal columnWidth(const QByteArray& role) const;
/**
* Sets the column-width that is required to show the role unclipped.
*/
void setPreferredColumnWidth(const QByteArray& role, qreal width);
qreal preferredColumnWidth(const QByteArray& role) const;
void setOffset(qreal offset);
qreal offset() const;
qreal minimumColumnWidth() const;
void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = nullptr) override;
Q_SIGNALS:
/**
* Is emitted if the width of a visible role has been adjusted by the user with the mouse
* (no signal is emitted if KItemListHeader::setVisibleRoleWidth() is invoked).
*/
void columnWidthChanged(const QByteArray& role,
qreal currentWidth,
qreal previousWidth);
/**
* Is emitted if the user has released the mouse button after adjusting the
* width of a visible role.
*/
void columnWidthChangeFinished(const QByteArray& role,
qreal currentWidth);
/**
* Is emitted if the position of the column has been changed.
*/
void columnMoved(const QByteArray& role, int currentIndex, int previousIndex);
/**
* Is emitted if the user has changed the sort order by clicking on a
* header item. The sort order of the model has already been adjusted to
* the current sort order. Note that no signal will be emitted if the
* sort order of the model has been changed without user interaction.
*/
void sortOrderChanged(Qt::SortOrder current, Qt::SortOrder previous);
/**
* Is emitted if the user has changed the sort role by clicking on a
* header item. The sort role of the model has already been adjusted to
* the current sort role. Note that no signal will be emitted if the
* sort role of the model has been changed without user interaction.
*/
void sortRoleChanged(const QByteArray& current, const QByteArray& previous);
protected:
void mousePressEvent(QGraphicsSceneMouseEvent* event) override;
void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
void mouseMoveEvent(QGraphicsSceneMouseEvent* event) override;
void mouseDoubleClickEvent(QGraphicsSceneMouseEvent* event) override;
void hoverEnterEvent(QGraphicsSceneHoverEvent* event) override;
void hoverLeaveEvent(QGraphicsSceneHoverEvent* event) override;
void hoverMoveEvent(QGraphicsSceneHoverEvent* event) override;
private Q_SLOTS:
void slotSortRoleChanged(const QByteArray& current, const QByteArray& previous);
void slotSortOrderChanged(Qt::SortOrder current, Qt::SortOrder previous);
private:
void paintRole(QPainter* painter,
const QByteArray& role,
const QRectF& rect,
int orderIndex,
QWidget* widget = nullptr) const;
void updatePressedRoleIndex(const QPointF& pos);
void updateHoveredRoleIndex(const QPointF& pos);
int roleIndexAt(const QPointF& pos) const;
bool isAboveRoleGrip(const QPointF& pos, int roleIndex) const;
/**
* Creates a pixmap of the role with the index \a roleIndex that is shown
* during moving a role.
*/
QPixmap createRolePixmap(int roleIndex) const;
/**
* @return Target index of the currently moving visible role based on the current
* state of m_movingRole.
*/
int targetOfMovingRole() const;
/**
* @return x-position of the left border of the role \a role.
*/
qreal roleXPosition(const QByteArray& role) const;
private:
enum RoleOperation
{
NoRoleOperation,
ResizeRoleOperation,
MoveRoleOperation
};
bool m_automaticColumnResizing;
KItemModelBase* m_model;
qreal m_offset;
QList<QByteArray> m_columns;
QHash<QByteArray, qreal> m_columnWidths;
QHash<QByteArray, qreal> m_preferredColumnWidths;
int m_hoveredRoleIndex;
int m_pressedRoleIndex;
RoleOperation m_roleOperation;
QPointF m_pressedMousePos;
struct MovingRole
{
QPixmap pixmap;
int x;
int xDec;
int index;
} m_movingRole;
};
#endif
|
