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| |
| #include "exportdialog.h" |
| |
| #include <QApplication> |
| #include <QDialogButtonBox> |
| #include <QFileDialog> |
| #include <QFormLayout> |
| #include <QHBoxLayout> |
| #include <QMessageBox> |
| #include <QLabel> |
| #include <QLineEdit> |
| #include <QPushButton> |
| #include <QScreen> |
| #include <QSpinBox> |
| #include <QToolButton> |
| #include <QVBoxLayout> |
| |
| #include <QImageWriter> |
| |
| #include <QDebug> |
| |
| #include <QDir> |
| #include <QFileInfo> |
| |
| enum { exportMinimumSize = 1, exportMaximumSize = 2000 }; |
| |
| ExportDialog::ExportDialog(QWidget *parent) |
| : QDialog(parent) |
| , m_fileNameLineEdit(new QLineEdit(this)) |
| , m_widthSpinBox(new QSpinBox(this)) |
| , m_heightSpinBox(new QSpinBox(this)) |
| , m_aspectRatio(1) |
| { |
| typedef void (QSpinBox::*QSpinBoxIntSignal)(int); |
| |
| setWindowFlags(windowFlags() & ~Qt::WindowContextHelpButtonHint); |
| setWindowTitle(tr("Export")); |
| |
| QFormLayout *formLayout = new QFormLayout(this); |
| |
| QHBoxLayout *fileLayout = new QHBoxLayout; |
| fileLayout->addWidget(m_fileNameLineEdit); |
| m_fileNameLineEdit->setMinimumWidth(this->screen()->availableGeometry() .width() / 6); |
| QPushButton *browseButton = new QPushButton(tr("Browse..."), this); |
| fileLayout->addWidget(browseButton); |
| connect(browseButton, &QAbstractButton::clicked, this, &ExportDialog::browse); |
| formLayout->addRow(tr("File:"), fileLayout); |
| |
| QHBoxLayout *sizeLayout = new QHBoxLayout; |
| sizeLayout->addStretch(); |
| m_widthSpinBox->setMinimum(exportMinimumSize); |
| m_widthSpinBox->setMaximum(exportMaximumSize); |
| connect(m_widthSpinBox, static_cast<QSpinBoxIntSignal>(&QSpinBox::valueChanged), |
| this, &ExportDialog::exportWidthChanged); |
| sizeLayout->addWidget(m_widthSpinBox); |
| //: Multiplication, as in 32x32 |
| sizeLayout->addWidget(new QLabel(tr("x"))); |
| m_heightSpinBox->setMinimum(exportMinimumSize); |
| m_heightSpinBox->setMaximum(exportMaximumSize); |
| connect(m_heightSpinBox, static_cast<QSpinBoxIntSignal>(&QSpinBox::valueChanged), |
| this, &ExportDialog::exportHeightChanged); |
| sizeLayout->addWidget(m_heightSpinBox); |
| QToolButton *resetButton = new QToolButton(this); |
| resetButton->setIcon(QIcon(":/qt-project.org/styles/commonstyle/images/refresh-32.png")); |
| sizeLayout->addWidget(resetButton); |
| connect(resetButton, &QAbstractButton::clicked, this, &ExportDialog::resetExportSize); |
| formLayout->addRow(tr("Size:"), sizeLayout); |
| |
| QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, this); |
| connect(buttonBox, &QDialogButtonBox::accepted, this, &QDialog::accept); |
| connect(buttonBox, &QDialogButtonBox::rejected, this, &QDialog::reject); |
| formLayout->addRow(buttonBox); |
| } |
| |
| void ExportDialog::accept() |
| { |
| const QString fileName = exportFileName(); |
| if (fileName.isEmpty()) { |
| QMessageBox::warning(this, windowTitle(), tr("Please enter a file name")); |
| return; |
| } |
| QFileInfo fi(fileName); |
| if (fi.exists()) { |
| const QString question = tr("%1 already exists.\nWould you like to overwrite it?").arg(QDir::toNativeSeparators(fileName)); |
| if (QMessageBox::question(this, windowTitle(), question, QMessageBox::Yes | QMessageBox::No) != QMessageBox::Yes) |
| return; |
| } |
| QDialog::accept(); |
| } |
| |
| QSize ExportDialog::exportSize() const |
| { |
| return QSize(m_widthSpinBox->value(), m_heightSpinBox->value()); |
| } |
| |
| void ExportDialog::setExportSize(const QSize &size) |
| { |
| m_defaultSize = size; |
| QSizeF defaultSizeF(m_defaultSize); |
| m_aspectRatio = defaultSizeF.width() / defaultSizeF.height(); |
| setExportWidthBlocked(size.width()); |
| setExportHeightBlocked(size.height()); |
| } |
| |
| void ExportDialog::resetExportSize() |
| { |
| setExportWidthBlocked(m_defaultSize.width()); |
| setExportHeightBlocked(m_defaultSize.height()); |
| } |
| |
| void ExportDialog::setExportWidthBlocked(int width) |
| { |
| if (m_widthSpinBox->value() != width) { |
| const bool blockSignals = m_widthSpinBox->blockSignals(true); |
| m_widthSpinBox->setValue(width); |
| m_widthSpinBox->blockSignals(blockSignals); |
| } |
| } |
| |
| void ExportDialog::setExportHeightBlocked(int height) |
| { |
| if (m_heightSpinBox->value() != height) { |
| const bool blockSignals = m_heightSpinBox->blockSignals(true); |
| m_heightSpinBox->setValue(height); |
| m_heightSpinBox->blockSignals(blockSignals); |
| } |
| } |
| |
| void ExportDialog::exportWidthChanged(int width) |
| { |
| const bool square = m_defaultSize.width() == m_defaultSize.height(); |
| setExportHeightBlocked(square ? width : qRound(qreal(width) / m_aspectRatio)); |
| } |
| |
| void ExportDialog::exportHeightChanged(int height) |
| { |
| const bool square = m_defaultSize.width() == m_defaultSize.height(); |
| setExportWidthBlocked(square ? height : qRound(qreal(height) * m_aspectRatio)); |
| } |
| |
| QString ExportDialog::exportFileName() const |
| { |
| return QDir::cleanPath(m_fileNameLineEdit->text().trimmed()); |
| } |
| |
| void ExportDialog::setExportFileName(const QString &f) |
| { |
| m_fileNameLineEdit->setText(QDir::toNativeSeparators(f)); |
| } |
| |
| void ExportDialog::browse() |
| { |
| QFileDialog fileDialog(this); |
| fileDialog.setAcceptMode(QFileDialog::AcceptSave); |
| const QString fileName = exportFileName(); |
| if (!fileName.isEmpty()) |
| fileDialog.setDirectory(QFileInfo(fileName).absolutePath()); |
| QStringList mimeTypes; |
| const auto supportedMimeTypes = QImageWriter::supportedMimeTypes(); |
| for (const QByteArray &mimeType : supportedMimeTypes) |
| mimeTypes.append(QLatin1String(mimeType)); |
| fileDialog.setMimeTypeFilters(mimeTypes); |
| const int pngIndex = mimeTypes.indexOf("image/png"); |
| if (pngIndex >= 0) { |
| fileDialog.selectMimeTypeFilter(mimeTypes.at(pngIndex)); |
| fileDialog.setDefaultSuffix("png"); |
| } |
| if (fileDialog.exec() == QDialog::Accepted) |
| setExportFileName(fileDialog.selectedFiles().constFirst()); |
| } |