strawberry-audio-player-win.../src/widgets/tracksliderslider.cpp

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/*
* Strawberry Music Player
* This file was part of Clementine.
* Copyright 2010, David Sansome <me@davidsansome.com>
*
* Strawberry 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 3 of the License, or
* (at your option) any later version.
*
* Strawberry 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 Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
#include "config.h"
#include <QWidget>
#include <QSlider>
#include <QPoint>
#include <QRect>
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#include <QStyle>
#include <QStyleOption>
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#include <QEvent>
#include <QKeyEvent>
#include <QMouseEvent>
#include <QWheelEvent>
#include "core/timeconstants.h"
#include "core/utilities.h"
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#ifndef Q_OS_MACOS
# include "tracksliderpopup.h"
#endif
#include "tracksliderslider.h"
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TrackSliderSlider::TrackSliderSlider(QWidget* parent)
: QSlider(parent),
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#ifndef Q_OS_MACOS
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popup_(new TrackSliderPopup(window())),
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#endif
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mouse_hover_seconds_(0) {
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setMouseTracking(true);
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#ifndef Q_OS_MACOS
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popup_->hide();
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connect(this, SIGNAL(valueChanged(int)), SLOT(UpdateDeltaTime()));
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#endif
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}
void TrackSliderSlider::mousePressEvent(QMouseEvent* e) {
// QSlider asks QStyle which mouse button should do what (absolute move or page step).
// We force our own behaviour here because it makes more sense for a music player IMO.
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Qt::MouseButton new_button = e->button();
if (e->button() == Qt::LeftButton) {
int abs_buttons = style()->styleHint(QStyle::SH_Slider_AbsoluteSetButtons);
if (abs_buttons & Qt::LeftButton)
new_button = Qt::LeftButton;
else if (abs_buttons & Qt::MidButton)
new_button = Qt::MidButton;
else if (abs_buttons & Qt::RightButton)
new_button = Qt::RightButton;
}
QMouseEvent new_event(e->type(), e->pos(), new_button, new_button, e->modifiers());
QSlider::mousePressEvent(&new_event);
if (new_event.isAccepted())
e->accept();
}
void TrackSliderSlider::mouseReleaseEvent(QMouseEvent* e) {
QSlider::mouseReleaseEvent(e);
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if (e->button() == Qt::XButton1) {
emit Previous();
}
else if (e->button() == Qt::XButton2) {
emit Next();
}
e->accept();
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}
void TrackSliderSlider::mouseMoveEvent(QMouseEvent* e) {
QSlider::mouseMoveEvent(e);
// Borrowed from QSliderPrivate::pixelPosToRangeValue
QStyleOptionSlider opt;
initStyleOption(&opt);
QRect gr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderGroove, this);
QRect sr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle, this);
int slider_length = sr.width();
int slider_min = gr.x();
int slider_max = gr.right() - slider_length + 1;
mouse_hover_seconds_ = QStyle::sliderValueFromPosition(minimum() / kMsecPerSec, maximum() / kMsecPerSec, e->x() - slider_length / 2 - slider_min + 1, slider_max - slider_min);
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#ifndef Q_OS_MACOS
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popup_->SetText(Utilities::PrettyTime(mouse_hover_seconds_));
UpdateDeltaTime();
popup_->SetPopupPosition(mapTo(window(), QPoint(e->x(), rect().center().y())));
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#endif
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}
void TrackSliderSlider::wheelEvent(QWheelEvent *e) {
if (e->delta() < 0) {
emit SeekBackward();
}
else {
emit SeekForward();
}
e->accept();
}
void TrackSliderSlider::enterEvent(QEvent* e) {
QSlider::enterEvent(e);
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#ifndef Q_OS_MACOS
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if (isEnabled()) {
popup_->show();
}
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#endif
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}
void TrackSliderSlider::leaveEvent(QEvent* e) {
QSlider::leaveEvent(e);
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#ifndef Q_OS_MACOS
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if (popup_->isVisible()) {
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popup_->hide();
}
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#endif
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}
void TrackSliderSlider::keyPressEvent(QKeyEvent* event) {
if (event->key() == Qt::Key_Left || event->key() == Qt::Key_Down) {
emit SeekBackward();
event->accept();
}
else if (event->key() == Qt::Key_Right || event->key() == Qt::Key_Up) {
emit SeekForward();
event->accept();
}
else {
QSlider::keyPressEvent(event);
}
}
void TrackSliderSlider::UpdateDeltaTime() {
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#ifndef Q_OS_MACOS
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if (popup_->isVisible()) {
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int delta_seconds = mouse_hover_seconds_ - (value() / kMsecPerSec);
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popup_->SetSmallText(Utilities::PrettyTimeDelta(delta_seconds));
}
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#endif
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}