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/*
* Cantata
*
* Copyright (c) 2011-2022 Craig Drummond <craig.p.drummond@gmail.com>
*
* ----
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "selectorlabel.h"
#include "support/osxstyle.h"
#include "support/utils.h"
#include <QAction>
#include <QApplication>
#include <QCursor>
#include <QEvent>
#include <QMouseEvent>
SelectorLabel::SelectorLabel(QWidget* p)
: QLabel(p), current(0), useArrow(false), bold(true), menu(nullptr)
{
textColor = palette().text().color();
setAttribute(Qt::WA_Hover, true);
menu = new QMenu(this);
#ifdef Q_OS_MAC
// Mac text seems to be 2px too high. margin-top fixes this
setStyleSheet(QLatin1String("QLabel { margin-top: 2px} "));
#endif
}
static QString addMarkup(const QString& s, bool arrow, bool bold)
{
return QLatin1String(bold ? "<b>" : "<p>") + s + (arrow ? QLatin1String(" ") + QChar(0x25BE) : QString()) + QLatin1String(bold ? "</b>" : "</p>");
}
void SelectorLabel::addItem(const QString& text, const QString& data, const QString& tt)
{
QAction* act = menu->addAction(text, this, SLOT(itemSelected()));
act->setData(data);
if (!tt.isEmpty()) {
act->setToolTip(tt);
}
setText(addMarkup(text, useArrow, bold));
current = menu->actions().count();
}
void SelectorLabel::itemSelected()
{
QAction* act = qobject_cast<QAction*>(sender());
if (act) {
setCurrentIndex(menu->actions().indexOf(act));
}
}
bool SelectorLabel::event(QEvent* e)
{
switch (e->type()) {
case QEvent::MouseButtonPress:
if (menu && Qt::NoModifier == static_cast<QMouseEvent*>(e)->modifiers() && Qt::LeftButton == static_cast<QMouseEvent*>(e)->button()) {
menu->exec(mapToGlobal(QPoint(0, 0)));
update();
if (this != QApplication::widgetAt(QCursor::pos())) {
setStyleSheet(QString("QLabel{color:%1;}").arg(textColor.name()));
}
}
break;
case QEvent::Wheel:
if (menu) {
QList<QAction*> actions = menu->actions();
int numDegrees = static_cast<QWheelEvent*>(e)->angleDelta().y() / 8;
int numSteps = numDegrees / 15;
int newIndex = current;
if (numSteps > 0) {
for (int i = 0; i < numSteps; ++i) {
newIndex++;
if (newIndex >= actions.count()) {
newIndex = 0;
}
}
}
else {
for (int i = 0; i > numSteps; --i) {
newIndex--;
if (newIndex < 0) {
newIndex = actions.count() - 1;
}
}
}
setCurrentIndex(newIndex);
}
break;
case QEvent::HoverEnter:
if (isEnabled()) {
#ifdef Q_OS_MAC
setStyleSheet(QString("QLabel{color:%1;}").arg(OSXStyle::self()->viewPalette().highlight().color().name()));
#else
setStyleSheet(QLatin1String("QLabel{color:palette(highlight);}"));
#endif
}
break;
case QEvent::HoverLeave:
if (isEnabled()) {
setStyleSheet(QString("QLabel{color:%1;}").arg(textColor.name()));
}
default:
break;
}
return QLabel::event(e);
}
void SelectorLabel::setCurrentIndex(int v)
{
if (!menu || v < 0 || v == current) {
return;
}
QList<QAction*> actions = menu->actions();
if (v >= actions.count()) {
return;
}
current = v;
setText(addMarkup(Utils::strippedText(actions.at(current)->text()), useArrow, bold));
emit activated(current);
}
QString SelectorLabel::itemData(int index) const
{
QAction* act = action(index);
return act ? act->data().toString() : QString();
}
QAction* SelectorLabel::action(int index) const
{
if (!menu) {
return nullptr;
}
QList<QAction*> actions = menu->actions();
if (index >= actions.count()) {
return nullptr;
}
return actions.at(index);
}
#include "moc_selectorlabel.cpp"
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