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64 lines
1.3 KiB
C++
64 lines
1.3 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 "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->position().toPoint().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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