src/gui/lineedit.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (c) 2007 Trolltech ASA <info@trolltech.com>
   4 **
   5 ** Use, modification and distribution is allowed without limitation,
   6 ** warranty, liability or support of any kind.
   7 **
   8 ****************************************************************************/
   9
  10 #include "lineedit.h"
  11
  12 #include <algorithm>
  13
  14 #include <QGuiApplication>
  15 #include <QResizeEvent>
  16 #include <QStyle>
  17 #include <QToolButton>
  18
  19 #include "uithememanager.h"
  20
  21 LineEdit::LineEdit(QWidget *parent)
  22     : QLineEdit(parent)
  23 {
  24     m_searchButton = new QToolButton(this);
  25     m_searchButton->setIcon(UIThemeManager::instance()->getIcon("edit-find"));
  26     m_searchButton->setCursor(Qt::ArrowCursor);
  27     m_searchButton->setStyleSheet("QToolButton {border: none; padding: 2px;}");
  28
  29     // padding between text and widget borders
  30     setStyleSheet(QString::fromLatin1("QLineEdit {padding-left: %1px;}").arg(m_searchButton->sizeHint().width()));
  31
  32     setClearButtonEnabled(true);
  33
  34     const int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  35     setMaximumHeight(std::max(sizeHint().height(), m_searchButton->sizeHint().height()) + frameWidth * 2);
  36     setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
  37 }
  38
  39 void LineEdit::resizeEvent(QResizeEvent *e)
  40 {
  41     const int frameWidth = style()->pixelMetric(QStyle::PM_DefaultFrameWidth);
  42     const int xPos = QGuiApplication::isLeftToRight()
  43                      ? frameWidth
  44                      : (e->size().width() - m_searchButton->sizeHint().width() - frameWidth);
  45     m_searchButton->move(xPos, (e->size().height() - m_searchButton->sizeHint().height()) / 2);
  46 }
  47
  48 void LineEdit::keyPressEvent(QKeyEvent *event)
  49 {
  50     if ((event->modifiers() == Qt::NoModifier) && (event->key() == Qt::Key_Escape))
  51     {
  52         clear();
  53     }
  54     QLineEdit::keyPressEvent(event);
  55 }