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
|
#ifndef WIDGET_H
#define WIDGET_H
#include <QListView>
#include <QLineEdit>
#include <QCache>
class CategorizedView : public QListView
{
Q_OBJECT
public:
CategorizedView(QWidget *parent = 0);
~CategorizedView();
enum
{
CategoryRole = Qt::UserRole
};
virtual QRect visualRect(const QModelIndex &index) const;
QModelIndex indexAt(const QPoint &point) const;
void setSelection(const QRect &rect, const QItemSelectionModel::SelectionFlags commands) override;
protected slots:
void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight, const QVector<int> &roles);
virtual void rowsInserted(const QModelIndex &parent, int start, int end);
virtual void rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
virtual void updateGeometries();
protected:
virtual bool isIndexHidden(const QModelIndex &index) const;
void mousePressEvent(QMouseEvent *event) override;
void mouseMoveEvent(QMouseEvent *event) override;
void mouseReleaseEvent(QMouseEvent *event) override;
void mouseDoubleClickEvent(QMouseEvent *event) override;
void paintEvent(QPaintEvent *event) override;
void resizeEvent(QResizeEvent *event) override;
void dragEnterEvent(QDragEnterEvent *event) override;
void dragMoveEvent(QDragMoveEvent *event) override;
void dragLeaveEvent(QDragLeaveEvent *event) override;
void dropEvent(QDropEvent *event) override;
void startDrag(Qt::DropActions supportedActions) override;
private:
struct Category
{
Category(const QString &text, CategorizedView *view);
Category(const Category *other);
CategorizedView *view;
QString text;
bool collapsed;
QRect iconRect;
QRect textRect;
void drawHeader(QPainter *painter, const int y);
int totalHeight() const;
int headerHeight() const;
int contentHeight() const;
QSize categoryTotalSize() const;
};
friend struct Category;
QList<Category *> m_categories;
mutable QCache<const Category *, QList<QModelIndex> > m_cachedCategoryToIndexMapping;
mutable QCache<const QModelIndex, QRect> m_cachedVisualRects;
int m_leftMargin;
int m_rightMargin;
int m_categoryMargin;
int m_itemSpacing;
//bool m_updatesDisabled;
Category *category(const QModelIndex &index) const;
Category *category(const QString &cat) const;
Category *categoryAt(const QPoint &pos) const;
int numItemsForCategory(const Category *category) const;
QList<QModelIndex> itemsForCategory(const Category *category) const;
QModelIndex firstItemForCategory(const Category *category) const;
QModelIndex lastItemForCategory(const Category *category) const;
int categoryTop(const Category *category) const;
int itemsPerRow() const;
int contentWidth() const;
static bool lessThanCategoryPointer(const Category *c1, const Category *c2);
QList<Category *> sortedCategories() const;
private:
mutable QSize m_cachedItemSize;
QSize itemSize(const QStyleOptionViewItem &option) const;
QSize itemSize() const { return itemSize(viewOptions()); }
/*QLineEdit *m_categoryEditor;
Category *m_editedCategory;
void startCategoryEditor(Category *category);
private slots:
void endCategoryEditor();*/
private:
QPoint m_pressedPosition;
QPersistentModelIndex m_pressedIndex;
bool m_pressedAlreadySelected;
Category *m_pressedCategory;
QItemSelectionModel::SelectionFlag m_ctrlDragSelectionFlag;
QPoint m_lastDragPosition;
QPixmap renderToPixmap(const QModelIndexList &indices, QRect *r) const;
QList<QPair<QRect, QModelIndex> > draggablePaintPairs(const QModelIndexList &indices, QRect *r) const;
bool isDragEventAccepted(QDropEvent *event);
QPair<Category *, int> rowDropPos(const QPoint &pos);
};
#endif // WIDGET_H
|
