158 lines
3.6 KiB
C++
158 lines
3.6 KiB
C++
/*
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* This file Copyright (C) 2014 Mnemosyne LLC
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*
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* It may be used under the GNU GPL versions 2 or 3
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* or any future license endorsed by Mnemosyne LLC.
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*
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* $Id$
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*/
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#include <QApplication>
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#include <QFileDialog>
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#include <QFileIconProvider>
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#include <QFileInfo>
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#include <QStyle>
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#include <QStyleOptionToolButton>
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#include <QStylePainter>
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#include "path-button.h"
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#include "utils.h"
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TrPathButton::TrPathButton (QWidget * parent):
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QToolButton (parent),
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myMode (DirectoryMode),
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myTitle (),
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myNameFilter (),
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myPath ()
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{
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setSizePolicy(QSizePolicy (QSizePolicy::Preferred, QSizePolicy::Fixed));
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setText (tr ("(None)")); // for minimum width
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updateAppearance ();
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connect (this, SIGNAL (clicked ()), this, SLOT (onClicked ()));
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}
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void
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TrPathButton::setMode (Mode mode)
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{
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if (myMode == mode)
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return;
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myMode = mode;
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updateAppearance ();
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}
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void
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TrPathButton::setTitle (const QString& title)
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{
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myTitle = title;
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}
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void
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TrPathButton::setNameFilter (const QString& nameFilter)
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{
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myNameFilter = nameFilter;
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}
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void
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TrPathButton::setPath (const QString& path)
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{
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if (myPath == path)
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return;
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myPath = Utils::removeTrailingDirSeparator (path);
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updateAppearance ();
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emit pathChanged (myPath);
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}
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const QString&
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TrPathButton::path () const
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{
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return myPath;
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}
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void
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TrPathButton::paintEvent (QPaintEvent * /*event*/)
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{
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QStylePainter painter(this);
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QStyleOptionToolButton option;
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initStyleOption (&option);
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const QSize fakeContentSize (qMax (100, qApp->globalStrut ().width ()),
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qMax (100, qApp->globalStrut ().height ()));
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const QSize fakeSizeHint = style ()->sizeFromContents (QStyle::CT_ToolButton, &option, fakeContentSize, this);
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int textWidth = width () - (fakeSizeHint.width () - fakeContentSize.width ()) - iconSize ().width () - 6;
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if (popupMode () == MenuButtonPopup)
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textWidth -= style ()->pixelMetric (QStyle::PM_MenuButtonIndicator, &option, this);
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const QFileInfo pathInfo (myPath);
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option.text = myPath.isEmpty () ? tr ("(None)") : (pathInfo.fileName ().isEmpty () ? myPath : pathInfo.fileName ());
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option.text = fontMetrics ().elidedText (option.text, Qt::ElideMiddle, textWidth);
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painter.drawComplexControl(QStyle::CC_ToolButton, option);
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}
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void
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TrPathButton::onClicked ()
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{
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QFileDialog * dialog = new QFileDialog (window (), effectiveTitle ());
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dialog->setFileMode (isDirMode () ? QFileDialog::Directory : QFileDialog::ExistingFile);
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if (isDirMode ())
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dialog->setOption (QFileDialog::ShowDirsOnly);
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dialog->setNameFilter (myNameFilter);
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dialog->selectFile (myPath);
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connect (dialog, SIGNAL (fileSelected (QString)), this, SLOT (onFileSelected (QString)));
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dialog->setAttribute (Qt::WA_DeleteOnClose);
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dialog->open ();
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}
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void
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TrPathButton::onFileSelected (const QString& path)
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{
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if (!path.isEmpty ())
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setPath (path);
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}
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void
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TrPathButton::updateAppearance ()
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{
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const QFileInfo pathInfo (myPath);
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const int iconSize (style ()->pixelMetric (QStyle::PM_SmallIconSize));
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const QFileIconProvider iconProvider;
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QIcon icon;
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if (!myPath.isEmpty () && pathInfo.exists ())
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icon = iconProvider.icon (myPath);
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if (icon.isNull ())
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icon = iconProvider.icon (isDirMode () ? QFileIconProvider::Folder : QFileIconProvider::File);
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setIconSize (QSize (iconSize, iconSize));
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setIcon (icon);
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setToolTip (myPath == text () ? QString () : myPath);
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update ();
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}
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bool
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TrPathButton::isDirMode () const
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{
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return myMode == DirectoryMode;
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}
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QString
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TrPathButton::effectiveTitle () const
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{
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if (!myTitle.isEmpty ())
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return myTitle;
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return isDirMode () ? tr ("Select Folder") : tr ("Select File");
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}
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