184 lines
4.8 KiB
C++
184 lines
4.8 KiB
C++
/*
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* Strawberry Music Player
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* This file was part of Clementine.
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* Copyright 2010, David Sansome <me@davidsansome.com>
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*
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* Strawberry is free 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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*
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* Strawberry 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. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <QWidget>
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#include <QSlider>
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#include <QPoint>
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#include <QRect>
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#include <QStyle>
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#include <QStyleOption>
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#include <QEvent>
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#include <QKeyEvent>
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#include <QMouseEvent>
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#include <QWheelEvent>
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#include <QEnterEvent>
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#include "utilities/timeutils.h"
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#include "utilities/timeconstants.h"
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#ifndef Q_OS_MACOS
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# include "tracksliderpopup.h"
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#endif
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#include "tracksliderslider.h"
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TrackSliderSlider::TrackSliderSlider(QWidget *parent)
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: 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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wheel_accumulator_(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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QObject::connect(this, &TrackSliderSlider::valueChanged, this, &TrackSliderSlider::UpdateDeltaTime);
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#endif
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}
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void TrackSliderSlider::mousePressEvent(QMouseEvent *e) {
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// QSlider asks QStyle which mouse button should do what (absolute move or page step).
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// 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();
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if (e->button() == Qt::LeftButton) {
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int abs_buttons = style()->styleHint(QStyle::SH_Slider_AbsoluteSetButtons);
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if (abs_buttons & Qt::LeftButton) {
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new_button = Qt::LeftButton;
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}
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else if (abs_buttons & Qt::MiddleButton) {
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new_button = Qt::MiddleButton;
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}
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else if (abs_buttons & Qt::RightButton) {
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new_button = Qt::RightButton;
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}
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}
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QMouseEvent new_event(e->type(), e->pos(), e->globalPosition(), new_button, new_button, e->modifiers());
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QSlider::mousePressEvent(&new_event);
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if (new_event.isAccepted()) {
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e->accept();
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}
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}
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void TrackSliderSlider::mouseReleaseEvent(QMouseEvent *e) {
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QSlider::mouseReleaseEvent(e);
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if (e->button() == Qt::XButton1) {
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Q_EMIT Previous();
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}
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else if (e->button() == Qt::XButton2) {
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Q_EMIT Next();
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}
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e->accept();
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}
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void TrackSliderSlider::mouseMoveEvent(QMouseEvent *e) {
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QSlider::mouseMoveEvent(e);
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// Borrowed from QSliderPrivate::pixelPosToRangeValue
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QStyleOptionSlider opt;
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initStyleOption(&opt);
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QRect gr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderGroove, this);
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QRect sr = style()->subControlRect(QStyle::CC_Slider, &opt, QStyle::SC_SliderHandle, this);
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int slider_length = sr.width();
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int slider_min = gr.x();
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int slider_max = gr.right() - slider_length + 1;
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mouse_hover_seconds_ = QStyle::sliderValueFromPosition(minimum() / static_cast<int>(kMsecPerSec), maximum() / static_cast<int>(kMsecPerSec), e->pos().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_));
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UpdateDeltaTime();
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popup_->SetPopupPosition(mapTo(window(), QPoint(e->pos().x(), rect().center().y())));
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#endif
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}
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void TrackSliderSlider::wheelEvent(QWheelEvent *e) {
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const int scroll_state = wheel_accumulator_ + e->angleDelta().y();
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const int steps = scroll_state / WHEEL_ROTATION_TO_SEEK;
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wheel_accumulator_ = scroll_state % WHEEL_ROTATION_TO_SEEK;
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if (steps < 0) {
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Q_EMIT SeekBackward();
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}
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else if (steps > 0) {
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Q_EMIT SeekForward();
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}
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e->accept();
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}
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void TrackSliderSlider::enterEvent(QEnterEvent *e) {
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QSlider::enterEvent(e);
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#ifndef Q_OS_MACOS
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if (isEnabled()) {
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popup_->show();
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}
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#endif
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}
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void TrackSliderSlider::leaveEvent(QEvent *e) {
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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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}
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#endif
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}
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void TrackSliderSlider::keyPressEvent(QKeyEvent *event) {
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if (event->key() == Qt::Key_Left || event->key() == Qt::Key_Down) {
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Q_EMIT SeekBackward();
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event->accept();
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}
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else if (event->key() == Qt::Key_Right || event->key() == Qt::Key_Up) {
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Q_EMIT SeekForward();
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event->accept();
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}
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else {
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QSlider::keyPressEvent(event);
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}
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}
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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() / static_cast<int>(kMsecPerSec));
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popup_->SetSmallText(Utilities::PrettyTimeDelta(delta_seconds));
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}
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#endif
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}
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