imagesettings.cpp Example File

multimediawidgets/camera/imagesettings.cpp
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#include "imagesettings.h" #include "ui_imagesettings.h" #include <QComboBox> #include <QDebug> #include <QCameraImageCapture> #include <QMediaService> ImageSettings::ImageSettings(QCameraImageCapture *imageCapture, QWidget *parent) : QDialog(parent), ui(new Ui::ImageSettingsUi), imagecapture(imageCapture) { ui->setupUi(this); //image codecs ui->imageCodecBox->addItem(tr("Default image format"), QVariant(QString())); const QStringList supportedImageCodecs = imagecapture->supportedImageCodecs(); for (const QString &codecName : supportedImageCodecs) { QString description = imagecapture->imageCodecDescription(codecName); ui->imageCodecBox->addItem(codecName + ": " + description, QVariant(codecName)); } ui->imageQualitySlider->setRange(0, int(QMultimedia::VeryHighQuality)); ui->imageResolutionBox->addItem(tr("Default Resolution")); const QList<QSize> supportedResolutions = imagecapture->supportedResolutions(); for (const QSize &resolution : supportedResolutions) { ui->imageResolutionBox->addItem(QString("%1x%2").arg(resolution.width()).arg(resolution.height()), QVariant(resolution)); } } ImageSettings::~ImageSettings() { delete ui; } void ImageSettings::changeEvent(QEvent *e) { QDialog::changeEvent(e); switch (e->type()) { case QEvent::LanguageChange: ui->retranslateUi(this); break; default: break; } } QImageEncoderSettings ImageSettings::imageSettings() const { QImageEncoderSettings settings = imagecapture->encodingSettings(); settings.setCodec(boxValue(ui->imageCodecBox).toString()); settings.setQuality(QMultimedia::EncodingQuality(ui->imageQualitySlider->value())); settings.setResolution(boxValue(ui->imageResolutionBox).toSize()); return settings; } void ImageSettings::setImageSettings(const QImageEncoderSettings &imageSettings) { selectComboBoxItem(ui->imageCodecBox, QVariant(imageSettings.codec())); selectComboBoxItem(ui->imageResolutionBox, QVariant(imageSettings.resolution())); ui->imageQualitySlider->setValue(imageSettings.quality()); } QVariant ImageSettings::boxValue(const QComboBox *box) const { int idx = box->currentIndex(); if (idx == -1) return QVariant(); return box->itemData(idx); } void ImageSettings::selectComboBoxItem(QComboBox *box, const QVariant &value) { for (int i = 0; i < box->count(); ++i) { if (box->itemData(i) == value) { box->setCurrentIndex(i); break; } } }