transmission/qt/FilterBarLineEdit.cc

73 lines
2.4 KiB
C++

/*
* This file Copyright (C) 2012-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <QToolButton>
#include <QStyle>
#include "FilterBarLineEdit.h"
FilterBarLineEdit::FilterBarLineEdit (QWidget * parent):
QLineEdit (parent),
myClearButton (nullptr)
{
#if QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
const QIcon icon = QIcon::fromTheme (QLatin1String ("edit-clear"), style ()->standardIcon (QStyle::SP_DialogCloseButton));
const int iconSize = style ()->pixelMetric (QStyle::PM_SmallIconSize);
myClearButton = new QToolButton (this);
myClearButton->setStyleSheet (QLatin1String ("QToolButton{border:0;padding:0;margin:0}"));
myClearButton->setToolButtonStyle (Qt::ToolButtonIconOnly);
myClearButton->setFocusPolicy (Qt::NoFocus);
myClearButton->setCursor (Qt::ArrowCursor);
myClearButton->setIconSize (QSize (iconSize, iconSize));
myClearButton->setIcon (icon);
myClearButton->setFixedSize (myClearButton->iconSize () + QSize (2, 2));
myClearButton->hide ();
const int frameWidth = style ()->pixelMetric (QStyle::PM_DefaultFrameWidth);
const QSize minSizeHint = minimumSizeHint ();
const QSize buttonSize = myClearButton->size ();
setStyleSheet (QString::fromLatin1 ("QLineEdit{padding-right:%1px}").arg (buttonSize.width () + frameWidth + 1));
setMinimumSize (qMax (minSizeHint.width (), buttonSize.width () + frameWidth * 2 + 2),
qMax (minSizeHint.height (), buttonSize.height () + frameWidth * 2 + 2));
connect (this, SIGNAL (textChanged (QString)), this, SLOT (updateClearButtonVisibility ()));
connect (myClearButton, SIGNAL (clicked ()), this, SLOT (clear ()));
#else
setClearButtonEnabled (true);
#endif
#if QT_VERSION >= QT_VERSION_CHECK(4, 7, 0)
setPlaceholderText (tr ("Search..."));
#endif
}
void
FilterBarLineEdit::resizeEvent (QResizeEvent * event)
{
QLineEdit::resizeEvent (event);
#if QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
const int frameWidth = style ()->pixelMetric (QStyle::PM_DefaultFrameWidth);
const QRect editRect = rect();
const QSize buttonSize = myClearButton->size ();
myClearButton->move (editRect.right () - frameWidth - buttonSize.width (),
editRect.top () + (editRect.height () - buttonSize.height ()) / 2);
#endif
}
void
FilterBarLineEdit::updateClearButtonVisibility ()
{
#if QT_VERSION < QT_VERSION_CHECK(5, 2, 0)
myClearButton->setVisible (!text ().isEmpty ());
#endif
}