104 lines
3.0 KiB
C++
104 lines
3.0 KiB
C++
#include "FrequentShower.h"
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#include <QPainter>
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#include <QDebug>
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#include <QKeyEvent>
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#include "../Global.h"
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Frequent_Shower::Frequent_Shower(QWidget *parent) : QWidget(parent) {
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setObjectName("设置频率值控件");
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set_frequent(Back_End::instance()->YsGetFreq());
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}
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void Frequent_Shower::paintEvent(QPaintEvent *event) {
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QPainter painter(this);
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QFont font;
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font.setPointSize(calculate_optimal_font_size(frequent, {(int)((double)width() * 0.9), height()}, font));
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painter.setFont(font);
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painter.setPen(Qt::black);
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painter.drawText(rect(), Qt::AlignCenter, frequent);
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QFontMetrics fontMetrics(font);
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if (select_index >= 0 && select_index < frequent.length()) {
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int a = (QWidget::width() - fontMetrics.horizontalAdvance(frequent)) / 2;
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int start_x = a + fontMetrics.horizontalAdvance(frequent.mid(0, select_index));
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int w = fontMetrics.horizontalAdvance(frequent[select_index]);
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painter.fillRect(start_x, 0, w, QWidget::height(), Qt::black);
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painter.setPen(Qt::white);
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painter.drawText(QRect(start_x, 0, w, QWidget::height()), Qt::AlignCenter, QString(frequent[select_index]));
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}
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}
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void Frequent_Shower::keyPressEvent(QKeyEvent *event) {
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Back_End* g = Back_End::instance();
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QString key_text = event->text();
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if (key_text >= "0" && key_text <= "9") {
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frequent[select_index] = key_text.at(0).toLatin1();
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update();
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return;
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}
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if (g->match(event, "左移")) {
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move(-1);
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} else if (g->match(event, "右移")) {
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move(1);
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} else if (g->match(event, "增加")) {
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change(1);
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} else if (g->match(event, "减小")) {
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change(-1);
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}
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event->ignore();
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}
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void Frequent_Shower::move(int num) {
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select_index += num;
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if(select_index < 0) {
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select_index = 0;
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} else if(select_index >= frequent.length()) {
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select_index = frequent.length() - 1;
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}
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if(frequent[select_index] == '.') {
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if(num > 0) {
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select_index++;
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} else {
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select_index--;
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}
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}
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update();
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}
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void Frequent_Shower::change(int num) {
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if (select_index >= 0 && select_index < frequent.length()) {
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int n = frequent[select_index].digitValue();
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n += num;
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if (n < 0) {
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n = 9;
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} else if (n > 9) {
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n = 0;
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}
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frequent[select_index] = QString::number(n)[0];
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update();
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Back_End::instance()->YsSetFreq(QString(frequent).replace('.', "").toULongLong());
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}
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}
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void Frequent_Shower::set_frequent(quint64 frequent) {
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QString str_number = QString::number(frequent, 10);
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int padding = 11 - str_number.length();
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if (padding > 0) {
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str_number = QString(padding, '0') + str_number;
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}
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this->frequent = QString("%1.%2.%3.%4").arg(
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str_number.mid(0, 2),
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str_number.mid(2, 3),
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str_number.mid(5, 3),
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str_number.mid(8, 3)
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);
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// qDebug() << str_number << " " << frequent;
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update();
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}
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