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76cbaf18f1
The qTox Project is not associated with the Tox Project in any ways, with the exception of "qTox" using the Tox Projet's "toxcore" collection of libraries. In particular, the Tox Projet does not own copyright over the qTox Project's "qTox" collection of software, source code, and assets. The qTox Project's assets are under the sole copyright of the qTox contributors, and no partiular rights are granted to the Tox Project.
154 lines
3.5 KiB
C++
154 lines
3.5 KiB
C++
/*
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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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textEdit->setInputMethodHints(Qt::ImhNoAutoUppercase
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| Qt::ImhNoPredictiveText
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| Qt::ImhPreferLatin);
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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 (!textEdit->isVisible())
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return false;
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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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QString oldOrigText = origText;
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setText(textEdit->text()); // set before emitting so we don't override external reactions to signal
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emit textChanged(textEdit->text(), oldOrigText);
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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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QString CroppingLabel::fullText()
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{
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return origText;
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}
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