mirror of
https://github.com/qTox/qTox.git
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143 lines
3.2 KiB
C++
143 lines
3.2 KiB
C++
/*
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Copyright (C) 2014 by Project Tox <https://tox.im>
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This file is part of qTox, a Qt-based graphical interface for Tox.
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This program is libre software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the COPYING file for more details.
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*/
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#include "croppinglabel.h"
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#include <QResizeEvent>
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CroppingLabel::CroppingLabel(QWidget* parent)
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: QLabel(parent)
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, blockPaintEvents(false)
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, editable(false)
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, elideMode(Qt::ElideRight)
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{
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setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
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textEdit = new QLineEdit(this);
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textEdit->hide();
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installEventFilter(this);
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textEdit->installEventFilter(this);
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}
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void CroppingLabel::setEditable(bool editable)
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{
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this->editable = editable;
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if (editable)
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setCursor(Qt::PointingHandCursor);
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else
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unsetCursor();
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}
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void CroppingLabel::setEdlideMode(Qt::TextElideMode elide)
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{
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elideMode = elide;
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}
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void CroppingLabel::setText(const QString& text)
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{
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origText = text.trimmed();
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setElidedText();
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}
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void CroppingLabel::resizeEvent(QResizeEvent* ev)
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{
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setElidedText();
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textEdit->resize(ev->size());
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QLabel::resizeEvent(ev);
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}
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QSize CroppingLabel::sizeHint() const
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{
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return QSize(0, QLabel::sizeHint().height());
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}
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QSize CroppingLabel::minimumSizeHint() const
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{
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return QSize(fontMetrics().width("..."), QLabel::minimumSizeHint().height());
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}
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void CroppingLabel::mouseReleaseEvent(QMouseEvent *e)
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{
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if (editable)
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showTextEdit();
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emit clicked();
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QLabel::mouseReleaseEvent(e);
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}
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bool CroppingLabel::eventFilter(QObject *obj, QEvent *e)
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{
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// catch paint events if needed
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if (obj == this)
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{
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if (e->type() == QEvent::Paint && blockPaintEvents)
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return true;
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}
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// events fired by the QLineEdit
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if (obj == textEdit)
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{
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if (e->type() == QEvent::KeyPress)
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{
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QKeyEvent* keyEvent = static_cast<QKeyEvent*>(e);
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if (keyEvent->key() == Qt::Key_Return)
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hideTextEdit(true);
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if (keyEvent->key() == Qt::Key_Escape)
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hideTextEdit(false);
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}
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if (e->type() == QEvent::FocusOut)
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hideTextEdit(true);
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}
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return false;
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}
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void CroppingLabel::setElidedText()
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{
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QString elidedText = fontMetrics().elidedText(origText, elideMode, width());
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if (elidedText != origText)
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setToolTip(origText);
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else
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setToolTip(QString());
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QLabel::setText(elidedText);
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}
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void CroppingLabel::hideTextEdit(bool acceptText)
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{
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if (acceptText)
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{
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emit textChanged(textEdit->text(), origText);
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setText(textEdit->text());
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}
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textEdit->hide();
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blockPaintEvents = false;
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}
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void CroppingLabel::showTextEdit()
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{
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blockPaintEvents = true;
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textEdit->show();
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textEdit->setFocus();
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textEdit->setText(origText);
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}
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