src/GUI/fileselectwidget.cpp

   1 #include <QPushButton>
   2 #include <QToolButton>
   3 #include <QFileDialog>
   4 #include <QHBoxLayout>
   5 #include <QFileInfo>
   6 #include <QApplication>
   7 #include <QFontMetrics>
   8 #include "fileselectwidget.h"
   9
  10
  11 FileSelectWidget::FileSelectWidget(QWidget *parent) : QWidget(parent)
  12 {
  13         _edit = new QLineEdit();
  14 #ifdef Q_OS_ANDROID
  15         _edit->setDisabled(true);
  16 #else // Q_OS_ANDROID
  17         QFontMetrics fm(QApplication::font());
  18         _edit->setMinimumWidth(fm.averageCharWidth() * (QDir::homePath().length()
  19           + 12));
  20 #endif // Q_OS_ANDROID
  21 #ifdef Q_OS_WIN32
  22         _button = new QPushButton("...");
  23         _button->setMaximumWidth(_button->sizeHint().width() / 2);
  24 #else // Q_OS_WIN32
  25         _button = new QToolButton();
  26         _button->setText("...");
  27 #endif // Q_OS_WIN32
  28         connect(_button, &QToolButton::clicked, this, &FileSelectWidget::browse);
  29
  30         QHBoxLayout *layout = new QHBoxLayout();
  31         layout->setContentsMargins(QMargins());
  32         layout->addWidget(_edit);
  33         layout->addWidget(_button);
  34         setLayout(layout);
  35
  36         QSizePolicy p(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
  37         setSizePolicy(p);
  38 }
  39
  40 void FileSelectWidget::browse()
  41 {
  42 #ifdef Q_OS_ANDROID
  43         _fileName = QFileDialog::getSaveFileName(this, tr("Select file"));
  44         if (!_fileName.isEmpty())
  45                 _edit->setText(Util::displayName(_fileName));
  46 #else // Q_OS_ANDROID
  47         QFileInfo fi(_edit->text());
  48         QString fileName = QFileDialog::getSaveFileName(this, tr("Select file"),
  49           fi.dir().absolutePath(), _filter);
  50         if (!fileName.isEmpty())
  51                 _edit->setText(fileName);
  52 #endif // Q_OS_ANDROID
  53 }
  54
  55 bool FileSelectWidget::checkFile(QString &error) const
  56 {
  57         if (file().isEmpty()) {
  58                 error = tr("No output file selected.");
  59                 return false;
  60         }
  61
  62         QFile f(file());
  63         QFileInfo fi(f);
  64         bool exists = fi.exists();
  65         bool opened = false;
  66
  67         if (exists && fi.isDir()) {
  68                 error = tr("%1 is a directory.").arg(f.fileName());
  69                 return false;
  70         } else if ((exists && !fi.isWritable())
  71           || !(opened = f.open(QFile::Append))) {
  72                 error = tr("%1 is not writable.").arg(f.fileName());
  73                 return false;
  74         }
  75
  76         if (opened) {
  77                 f.close();
  78                 if (!exists)
  79                         f.remove();
  80         }
  81
  82         return true;
  83 }