src/uisupport/clearablelineedit.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2005/06 by the Quassel Project                          *
   3  *   devel@quassel-irc.org                                                 *
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  10  *   This program is distributed in the hope that it will be useful,       *
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  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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  20
  21 #include "clearablelineedit.h"
  22
  23 #include <QToolButton>
  24 #include <QStyle>
  25
  26 ClearableLineEdit::ClearableLineEdit(QWidget *parent)
  27   : QLineEdit(parent)
  28 {
  29   clearButton = new QToolButton(this);
  30   clearButton->setIcon(QIcon(":/22x22/actions/oxygen/22x22/actions/edit-clear-locationbar-rtl.png"));
  31 #ifndef Q_WS_QWS
  32   clearButton->setCursor(Qt::ArrowCursor);
  33 #endif
  34   clearButton->setStyleSheet("QToolButton { border: none; padding: 0px; }");
  35   clearButton->hide();
  36
  37   connect(clearButton, SIGNAL(clicked()), this, SLOT(clear()));
  38   connect(this, SIGNAL(textChanged(const QString&)), this, SLOT(updateClearButton(const QString&)));
  39
  40   int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  41   setStyleSheet(QString("QLineEdit { padding-right: %1px; } ").arg(clearButton->sizeHint().width() + frameWidth + 1));
  42   QSize msz = minimumSizeHint();
  43   setMinimumSize(qMax(msz.width(), clearButton->sizeHint().height() + frameWidth * 2 + 2),
  44                  qMax(msz.height(), clearButton->sizeHint().height() + frameWidth * 2 + 2));
  45 }
  46
  47 void ClearableLineEdit::resizeEvent(QResizeEvent *) {
  48   QSize size = clearButton->sizeHint();
  49   int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  50   clearButton->move(rect().right() - frameWidth - size.width(),
  51                     (rect().bottom() + 1 - size.height())/2);
  52 }
  53
  54 void ClearableLineEdit::updateClearButton(const QString& text) {
  55   clearButton->setVisible(!text.isEmpty());
  56 }