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143 lines
3.2 KiB
143 lines
3.2 KiB
/* |
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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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#include <QLineEdit> |
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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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