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 #ifdef Q_OS_ANDROID
  10 #include "common/util.h"
  11 #endif // Q_OS_ANDROID
  12
  13
  14 FileSelectWidget::FileSelectWidget(QWidget *parent) : QWidget(parent)
  15 {
  16         _edit = new QLineEdit();
  17 #ifdef Q_OS_ANDROID
  18         _edit->setDisabled(true);
  19 #else // Q_OS_ANDROID
  20         QFontMetrics fm(QApplication::font());
  21         _edit->setMinimumWidth(fm.averageCharWidth() * (QDir::homePath().length()
  22           + 12));
  23 #endif // Q_OS_ANDROID
  24 #ifdef Q_OS_WIN32
  25         _button = new QPushButton("...");
  26         _button->setMaximumWidth(_button->sizeHint().width() / 2);
  27 #else // Q_OS_WIN32
  28         _button = new QToolButton();
  29         _button->setText("...");
  30 #endif // Q_OS_WIN32
  31         connect(_button, &QToolButton::clicked, this, &FileSelectWidget::browse);
  32
  33         QHBoxLayout *layout = new QHBoxLayout();
  34         layout->setContentsMargins(QMargins());
  35         layout->addWidget(_edit);
  36         layout->addWidget(_button);
  37         setLayout(layout);
  38
  39         QSizePolicy p(QSizePolicy::MinimumExpanding, QSizePolicy::Fixed);
  40         setSizePolicy(p);
  41 }
  42
  43 void FileSelectWidget::browse()
  44 {
  45 #ifdef Q_OS_ANDROID
  46         _fileName = QFileDialog::getSaveFileName(this, tr("Select file"));
  47         if (!_fileName.isEmpty())
  48                 _edit->setText(Util::displayName(_fileName));
  49 #else // Q_OS_ANDROID
  50         QFileInfo fi(_edit->text());
  51         QString fileName = QFileDialog::getSaveFileName(this, tr("Select file"),
  52           fi.dir().absolutePath(), _filter);
  53         if (!fileName.isEmpty())
  54                 _edit->setText(fileName);
  55 #endif // Q_OS_ANDROID
  56 }
  57
  58 bool FileSelectWidget::checkFile(QString &error) const
  59 {
  60         if (file().isEmpty()) {
  61                 error = tr("No output file selected.");
  62                 return false;
  63         }
  64
  65         QFile f(file());
  66         QFileInfo fi(f);
  67         bool exists = fi.exists();
  68         bool opened = false;
  69
  70         if (exists && fi.isDir()) {
  71                 error = tr("%1 is a directory.").arg(f.fileName());
  72                 return false;
  73         } else if ((exists && !fi.isWritable())
  74           || !(opened = f.open(QFile::Append))) {
  75                 error = tr("%1 is not writable.").arg(f.fileName());
  76                 return false;
  77         }
  78
  79         if (opened) {
  80                 f.close();
  81                 if (!exists)
  82                         f.remove();
  83         }
  84
  85         return true;
  86 }