view widgets/SelectableLabel.cpp @ 1160:a429b2acb45d 3.0-integration

Make SVDEBUG always write to a log file -- formerly this was disabled in NDEBUG builds. I think there's little use to that, it just means that we keep adding more cerr debug output because we aren't getting the log we need. And SVDEBUG logging is not usually used in tight loops, I don't think the performance overhead is too serious.

Also update the About box.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2008 QMUL.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "SelectableLabel.h"

#include <iostream>
#include <QApplication>

SelectableLabel::SelectableLabel(QWidget *p) :
    QLabel(p),
    m_selected(false)
{
    setTextFormat(Qt::RichText);
//    setLineWidth(2);
//    setFixedWidth(480);
    setupStyle();
    setOpenExternalLinks(true);
}

SelectableLabel::~SelectableLabel()
{
}

void
SelectableLabel::setUnselectedText(QString text)
{
    if (m_unselectedText == text) return;
    m_unselectedText = text;
    if (!m_selected) {
        setText(m_unselectedText);
        resize(sizeHint());
    }
}

void
SelectableLabel::setSelectedText(QString text)
{
    if (m_selectedText == text) return;
    m_selectedText = text;
    if (m_selected) {
        setText(m_selectedText);
        resize(sizeHint());
    }
}

void
SelectableLabel::setupStyle()
{
    QPalette palette = QApplication::palette();

    setTextInteractionFlags(Qt::LinksAccessibleByKeyboard |
                            Qt::LinksAccessibleByMouse |
                            Qt::TextSelectableByMouse);

    if (m_selected) {
        setWordWrap(true);
        setStyleSheet
            (QString("QLabel:hover { background: %1; color: %3; } "
                     "QLabel:!hover { background: %2; color: %3 } "
                     "QLabel { padding: 7px }")
             .arg(palette.mid().color().lighter(120).name())
             .arg(palette.mid().color().lighter(140).name())
             .arg(palette.text().color().name()));
    } else {
        setWordWrap(false);
        setStyleSheet
            (QString("QLabel:hover { background: %1; color: %3; } "
                     "QLabel:!hover { background: %2; color: %3 } "
                     "QLabel { padding: 7px }")
             .arg(palette.button().color().name())
             .arg(palette.light().color().name())
             .arg(palette.text().color().name()));
    }
}    

void
SelectableLabel::setSelected(bool s)
{
    if (m_selected == s) return;
    m_selected = s;
    if (m_selected) {
        setText(m_selectedText);
    } else {
        setText(m_unselectedText);
    }
    setupStyle();
    parentWidget()->resize(parentWidget()->sizeHint());
}

void
SelectableLabel::toggle()
{
    setSelected(!m_selected);
}

void
SelectableLabel::mousePressEvent(QMouseEvent *e)
{
    m_swallowRelease = !m_selected;
    setSelected(true);
    QLabel::mousePressEvent(e);
    emit selectionChanged();
}

void
SelectableLabel::mouseDoubleClickEvent(QMouseEvent *e)
{
    QLabel::mouseDoubleClickEvent(e);
    emit doubleClicked();
}

void
SelectableLabel::mouseReleaseEvent(QMouseEvent *e)
{
    if (!m_swallowRelease) QLabel::mouseReleaseEvent(e);
    m_swallowRelease = false;
}

void
SelectableLabel::enterEvent(QEvent *)
{
//    cerr << "enterEvent" << endl;
//    QPalette palette = QApplication::palette();
//    palette.setColor(QPalette::Window, Qt::gray);
//    setStyleSheet("background: gray");
//    setPalette(palette);
}

void
SelectableLabel::leaveEvent(QEvent *)
{
//    cerr << "leaveEvent" << endl;
//    setStyleSheet("background: white");
//    QPalette palette = QApplication::palette();
//    palette.setColor(QPalette::Window, Qt::gray);
//    setPalette(palette);
}