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
|
#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;
int numRows() 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_bottomMargin;
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 int m_cachedItemWidth;
mutable QCache<QModelIndex, QSize> m_cachedItemSizes;
int itemWidth() const;
QSize itemSize(const QModelIndex &index) const;
/*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;
QPair<int, int> categoryInternalPosition(const QModelIndex &index) const;
int itemHeightForCategoryRow(const Category *category, const int internalRow) const;
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);
void invalidateCaches();
QPoint offset() const;
};
#endif // WIDGET_H
|
