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50
51#include "bookdelegate.h"
52
53#include <QtWidgets>
54
55BookDelegate::BookDelegate(QObject *parent)
56 : QSqlRelationalDelegate(parent), star(QPixmap(":images/star.png"))
57{
58}
59
60void BookDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
61 const QModelIndex &index) const
62{
63 if (index.column() != 5) {
64 QSqlRelationalDelegate::paint(painter, option, index);
65 } else {
66 const QAbstractItemModel *model = index.model();
67 QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ?
68 (option.state & QStyle::State_Active) ?
69 QPalette::Normal :
70 QPalette::Inactive :
71 QPalette::Disabled;
72
73 if (option.state & QStyle::State_Selected)
74 painter->fillRect(
75 option.rect,
76 option.palette.color(cg, QPalette::Highlight));
77
78 int rating = model->data(index, Qt::DisplayRole).toInt();
79 int width = star.width();
80 int height = star.height();
81 int x = option.rect.x();
82 int y = option.rect.y() + (option.rect.height() / 2) - (height / 2);
83 for (int i = 0; i < rating; ++i) {
84 painter->drawPixmap(x, y, star);
85 x += width;
86 }
87 }
88
89 QPen pen = painter->pen();
90 painter->setPen(option.palette.color(QPalette::Mid));
91 painter->drawLine(option.rect.bottomLeft(), option.rect.bottomRight());
92 painter->drawLine(option.rect.topRight(), option.rect.bottomRight());
93 painter->setPen(pen);
94}
95
96QSize BookDelegate::sizeHint(const QStyleOptionViewItem &option,
97 const QModelIndex &index) const
98{
99 if (index.column() == 5)
100 return QSize(5 * star.width(), star.height()) + QSize(1, 1);
101 // Since we draw the grid ourselves:
102 return QSqlRelationalDelegate::sizeHint(option, index) + QSize(1, 1);
103}
104
105bool BookDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,
106 const QStyleOptionViewItem &option,
107 const QModelIndex &index)
108{
109 if (index.column() != 5)
110 return QSqlRelationalDelegate::editorEvent(event, model, option, index);
111
112 if (event->type() == QEvent::MouseButtonPress) {
113 QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
114 int stars = qBound(0, int(0.7 + qreal(mouseEvent->position().toPoint().x()
115 - option.rect.x()) / star.width()), 5);
116 model->setData(index, QVariant(stars));
117 // So that the selection can change:
118 return false;
119 }
120
121 return true;
122}
123
124QWidget *BookDelegate::createEditor(QWidget *parent,
125 const QStyleOptionViewItem &option,
126 const QModelIndex &index) const
127{
128 if (index.column() != 4)
129 return QSqlRelationalDelegate::createEditor(parent, option, index);
130
131 // For editing the year, return a spinbox with a range from -1000 to 2100.
132 QSpinBox *sb = new QSpinBox(parent);
133 sb->setFrame(false);
134 sb->setMaximum(2100);
135 sb->setMinimum(-1000);
136
137 return sb;
138}
139