89 lines
2.5 KiB
C++
89 lines
2.5 KiB
C++
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#include "MainWindow.h"
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#include "ui_MainWindow.h"
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MainWindow::MainWindow(QWidget *parent)
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: QMainWindow(parent),
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ui(new Ui::MainWindow)
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{
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ui->setupUi(this);
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// Initialize UI
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updateCounterLabel();
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// Connect buttons to slots
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connect(ui->buttonIncrement, &QPushButton::clicked, this, &MainWindow::onIncrementClicked);
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connect(ui->buttonReset, &QPushButton::clicked, this, &MainWindow::onResetClicked);
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// slider business
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connect(ui->slider, &QSlider::valueChanged, this, &MainWindow::onSliderValueChanged);
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connect(ui->inputMin, &QLineEdit::editingFinished, this, &MainWindow::onMinChanged);
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connect(ui->inputMax, &QLineEdit::editingFinished, this, &MainWindow::onMaxChanged);
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connect(ui->inputStep, &QLineEdit::editingFinished, this, &MainWindow::onStepChanged);
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connect(ui->inputValue, &QLineEdit::editingFinished, this, &MainWindow::onValueChanged);
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}
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MainWindow::~MainWindow() {
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delete ui;
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}
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void MainWindow::onIncrementClicked() {
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counter_++;
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updateCounterLabel();
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}
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void MainWindow::onResetClicked() {
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counter_ = 0;
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updateCounterLabel();
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}
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void MainWindow::updateCounterLabel() {
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ui->labelCounter->setText(QString::number(counter_));
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}
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// allows only numbers to be set
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void MainWindow::onSliderValueChanged(int value) {
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QSignalBlocker blocker(ui->inputValue);
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ui->inputValue->setText(QString::number(value));
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}
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// allows only values within the min, max to be set by the text field
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void MainWindow::onValueChanged() {
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bool ok = false;
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int value = ui->inputValue->text().toInt(&ok);
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if(!ok) return;
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value = qBound(ui->slider->minimum(), value, ui->slider->maximum());
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ui->slider->setValue(value);
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}
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void MainWindow::applySliderRange() {
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bool minOk, maxOk;
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int min = ui->inputMin->text().toInt(&minOk);
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int max = ui->inputMax->text().toInt(&maxOk);
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if(!minOk || !maxOk || min > max) return;
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ui->slider->setRange(min, max);
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syncValueToUi(ui->slider->value());
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}
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void MainWindow::applySliderStep() {
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bool ok;
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int step = ui->inputStep->text().toInt(&ok);
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if(!ok || step <= 0) return;
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ui->slider->setSingleStep(step);
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ui->slider->setPageStep(step);
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}
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void MainWindow::syncValueToUi(int value) {
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QSignalBlocker block1(ui->slider);
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QSignalBlocker block2(ui->inputValue);
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value = qBound(ui->slider->minimum(), value, ui->slider->maximum());
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ui->slider->setValue(value);
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ui->inputValue->setText(QString::number(value));
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}
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