1cfe064632
Cleanup the StarDelegate example: - use QStyledItemDelegate instead QItemDelegate - use nullptr and other useful c++11 constructs - include the correct headers Change-Id: If2f65fe7cbdcdd4571d10ffa98d36eeab7836bbb Reviewed-by: Sze Howe Koh <szehowe.koh@gmail.com> Reviewed-by: Paul Wicking <paul.wicking@qt.io> Reviewed-by: Luca Beldi <v.ronin@yahoo.it>
111 lines
3.6 KiB
C++
111 lines
3.6 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** Commercial License Usage
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** accordance with the commercial license agreement provided with the
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** BSD License Usage
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** "Redistribution and use in source and binary forms, with or without
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "stareditor.h"
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#include "starrating.h"
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#include <QtWidgets>
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//! [0]
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StarEditor::StarEditor(QWidget *parent)
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: QWidget(parent)
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{
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setMouseTracking(true);
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setAutoFillBackground(true);
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}
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//! [0]
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QSize StarEditor::sizeHint() const
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{
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return myStarRating.sizeHint();
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}
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//! [1]
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void StarEditor::paintEvent(QPaintEvent *)
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{
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QPainter painter(this);
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myStarRating.paint(&painter, rect(), palette(),
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StarRating::EditMode::Editable);
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}
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//! [1]
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//! [2]
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void StarEditor::mouseMoveEvent(QMouseEvent *event)
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{
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const int star = starAtPosition(event->x());
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if (star != myStarRating.starCount() && star != -1) {
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myStarRating.setStarCount(star);
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update();
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}
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QWidget::mouseMoveEvent(event);
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}
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//! [2]
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//! [3]
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void StarEditor::mouseReleaseEvent(QMouseEvent *event)
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{
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emit editingFinished();
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QWidget::mouseReleaseEvent(event);
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}
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//! [3]
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//! [4]
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int StarEditor::starAtPosition(int x) const
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{
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const int star = (x / (myStarRating.sizeHint().width()
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/ myStarRating.maxStarCount())) + 1;
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if (star <= 0 || star > myStarRating.maxStarCount())
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return -1;
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return star;
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}
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//! [4]
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