mirror of https://github.com/qt/qtbase.git
94 lines
3.3 KiB
C++
94 lines
3.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "bookdelegate.h"
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#include <QtWidgets>
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BookDelegate::BookDelegate(QObject *parent)
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: QSqlRelationalDelegate(parent)
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{}
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void BookDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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if (index.column() != 5) {
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QSqlRelationalDelegate::paint(painter, option, index);
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} else {
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const QAbstractItemModel *model = index.model();
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QPalette::ColorGroup cg = (option.state & QStyle::State_Enabled) ?
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(option.state & QStyle::State_Active) ?
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QPalette::Normal :
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QPalette::Inactive :
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QPalette::Disabled;
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if (option.state & QStyle::State_Selected)
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painter->fillRect(
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option.rect,
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option.palette.color(cg, QPalette::Highlight));
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const int rating = model->data(index, Qt::DisplayRole).toInt();
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const int width = iconDimension;
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const int height = width;
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// add cellPadding / 2 to center the stars in the cell
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int x = option.rect.x() + cellPadding / 2;
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int y = option.rect.y() + (option.rect.height() / 2) - (height / 2);
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QIcon starIcon(QStringLiteral(":images/star.svg"));
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QIcon starFilledIcon(QStringLiteral(":images/star-filled.svg"));
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for (int i = 0; i < 5; ++i) {
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if (i < rating) {
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starFilledIcon.paint(painter, QRect(x, y, width, height));
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} else {
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starIcon.paint(painter, QRect(x, y, width, height));
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}
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x += width;
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}
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}
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}
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QSize BookDelegate::sizeHint(const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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if (index.column() == 5)
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return QSize(5 * iconDimension, iconDimension) + QSize(cellPadding, cellPadding);
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// Since we draw the grid ourselves:
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return QSqlRelationalDelegate::sizeHint(option, index) + QSize(cellPadding, cellPadding);
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}
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bool BookDelegate::editorEvent(QEvent *event, QAbstractItemModel *model,
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const QStyleOptionViewItem &option,
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const QModelIndex &index)
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{
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if (index.column() != 5)
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return QSqlRelationalDelegate::editorEvent(event, model, option, index);
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if (event->type() == QEvent::MouseButtonPress) {
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QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(event);
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int stars = qBound(0, int(0.7 + qreal(mouseEvent->position().toPoint().x()
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- option.rect.x()) / iconDimension), 5);
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model->setData(index, QVariant(stars));
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// So that the selection can change:
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return false;
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}
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return true;
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}
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QWidget *BookDelegate::createEditor(QWidget *parent,
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const QStyleOptionViewItem &option,
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const QModelIndex &index) const
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{
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if (index.column() != 4)
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return QSqlRelationalDelegate::createEditor(parent, option, index);
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// For editing the year, return a spinbox with a range from -1000 to 2100.
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QSpinBox *sb = new QSpinBox(parent);
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sb->setFrame(false);
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sb->setMaximum(2100);
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sb->setMinimum(-1000);
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return sb;
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}
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