92 lines
2.4 KiB
Plaintext
92 lines
2.4 KiB
Plaintext
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# Qt 读写 ini
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QSettings setting(ini_path, QSettings::IniFormat);
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// 读
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int value = setting.value("R/lower").toInt(); // 无文件或者无字段不报错，值为0
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// 写
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settings.setValue("General/Age", 30);
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# Qt 获取当前 exe 路径
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QString exe_path = QCoreApplication::applicationDirPath();
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QDir dir(exe_path);
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QString ini_path = dir.absoluteFilePath("ImageProcess.ini");
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# Qt 选择文件夹
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QFileDialog::getExistingDirectory(parent, u8"选择文件夹", QDir::homePath());
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# Qt 确认对话框
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QMessageBox questionBox(parent);
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questionBox.setText(content);
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questionBox.setWindowTitle(title);
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questionBox.setIcon(QMessageBox::Question);
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questionBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
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int result = questionBox.exec();
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if (result != QMessageBox::Yes) {
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return false;
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} else {
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return true;
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}
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# Qt 消息提示
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QMessageBox::information(parent, u8"提示", infomation);
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# windows 获取CPU逻辑处理器数量
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SYSTEM_INFO sysInfo;
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GetSystemInfo(&sysInfo);
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int numCores = sysInfo.dwNumberOfProcessors;
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# Qt QImage 和 opencv 的转换
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cv::Mat image_ = cv::imread(path);
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cv::cvtColor(image_, image_, cv::COLOR_BGR2RGB);
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QImage(image_.data, image_.cols, image_.rows, image_.step, QImage::Format_RGB888);
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# Qt 遍历文件
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QStringList files = dir.entryList(QDir::Files);
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# Qt 读写 txt
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QFile file(list_file);
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if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
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message(this, u8"打开文件" + list_file + u8"失败");
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return;
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}
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QTextStream in(&file);
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QString tmp;
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while (!in.atEnd()) {
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in >> tmp;
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}
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file.close();
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# opencv 调节亮度
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image_.convertTo(image_, -1, 1, light);
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# C++ 统计运行时间
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auto start = std::chrono::high_resolution_clock::now();
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auto end = std::chrono::high_resolution_clock::now();
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auto duration = std::chrono::duration_cast<std::chrono::seconds>(end - start);
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int time = duration.count();
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# opencv 更改 RGB 值
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std::vector<cv::Mat> channels;
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cv::split(img, channels);
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channels[0] += r;
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channels[1] += g;
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channels[2] += b;
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cv::merge(channels, img);
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# Qt 限制 QLineEdit 输入整数
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QIntValidator* valid = new QIntValidator(this);
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valid->setRange(1, INT_MAX);
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ui.edPicNo->setValidator(valid);
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# Qt 窗口变化事件
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bool MainWidget::event(QEvent * ev)
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{
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if (ev->type() == QEvent::Resize) {
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}
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return QWidget::event(ev);
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}
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# Qt QLabel 显示图片
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QImage img = img.scaled(w, h, Qt::KeepAspectRatio);
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ui.label->setPixmap(QPixmap::fromImage(img));
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ui.label->show();
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