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
|
#include "ForeignKeyDelegate.hpp"
#include <QApplication>
#include <QComboBox>
#include <QFontMetrics>
#include <QSize>
#include <QStyleOptionViewItem>
#include "CandidateKeyFilter.hpp"
ForeignKeyDelegate::ForeignKeyDelegate (QAbstractItemModel const * referenced_model
, int referenced_key_column
, QObject * parent
, int referenced_key_role)
: QStyledItemDelegate {parent}
, candidate_key_filter_ {new CandidateKeyFilter {referenced_model, referenced_key_column, nullptr, referenced_key_role}}
{
}
ForeignKeyDelegate::ForeignKeyDelegate (QAbstractItemModel const * referenced_model
, QAbstractItemModel const * referencing_model
, int referenced_key_column
, int referencing_key_column
, QObject * parent
, int referenced_key_role
, int referencing_key_role)
: QStyledItemDelegate {parent}
, candidate_key_filter_ {new CandidateKeyFilter {referenced_model, referencing_model, referenced_key_column, referencing_key_column, nullptr, referenced_key_role, referencing_key_role}}
{
}
ForeignKeyDelegate::~ForeignKeyDelegate ()
{
}
QWidget * ForeignKeyDelegate::createEditor (QWidget * parent
, QStyleOptionViewItem const& /* option */
, QModelIndex const& index) const
{
auto editor = new QComboBox {parent};
editor->setFrame (false);
candidate_key_filter_->set_active_key (index);
editor->setModel (candidate_key_filter_.data ());
editor->setSizeAdjustPolicy (QComboBox::AdjustToContents);
return editor;
}
QSize ForeignKeyDelegate::sizeHint (QStyleOptionViewItem const& option, QModelIndex const& index) const
{
auto size_hint = QStyledItemDelegate::sizeHint (option, index);
QFontMetrics metrics {option.font};
QStyleOptionComboBox combo_box_option;
combo_box_option.rect = option.rect;
combo_box_option.state = option.state | QStyle::State_Enabled;
for (auto row = 0; row < candidate_key_filter_->rowCount (); ++row)
{
size_hint = size_hint.expandedTo (qApp->style ()->sizeFromContents (QStyle::CT_ComboBox
, &combo_box_option
, metrics.boundingRect (candidate_key_filter_->data (candidate_key_filter_->index (row, 0)).toString ()).size ()));
}
return size_hint;
}
|
