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50
51#include "stareditor.h"
52#include "starrating.h"
53
54#include <QtWidgets>
55
56//! [0]
57StarEditor::StarEditor(QWidget *parent)
58 : QWidget(parent)
59{
60 setMouseTracking(true);
61 setAutoFillBackground(true);
62}
63//! [0]
64
65QSize StarEditor::sizeHint() const
66{
67 return myStarRating.sizeHint();
68}
69
70//! [1]
71void StarEditor::paintEvent(QPaintEvent *)
72{
73 QPainter painter(this);
74 myStarRating.paint(&painter, rect(), palette(),
75 StarRating::EditMode::Editable);
76}
77//! [1]
78
79//! [2]
80void StarEditor::mouseMoveEvent(QMouseEvent *event)
81{
82 const int star = starAtPosition(event->position().toPoint().x());
83
84 if (star != myStarRating.starCount() && star != -1) {
85 myStarRating.setStarCount(star);
86 update();
87 }
88 QWidget::mouseMoveEvent(event);
89}
90//! [2]
91
92//! [3]
93void StarEditor::mouseReleaseEvent(QMouseEvent *event)
94{
95 emit editingFinished();
96 QWidget::mouseReleaseEvent(event);
97}
98//! [3]
99
100//! [4]
101int StarEditor::starAtPosition(int x) const
102{
103 const int star = (x / (myStarRating.sizeHint().width()
104 / myStarRating.maxStarCount())) + 1;
105 if (star <= 0 || star > myStarRating.maxStarCount())
106 return -1;
107
108 return star;
109}
110//! [4]
111