143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/* This file is part of Clementine.
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Copyright 2010, David Sansome <me@davidsansome.com>
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Clementine 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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Clementine 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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You should have received a copy of the GNU General Public License
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along with Clementine. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "tracksliderslider.h"
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#include <QMouseEvent>
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#include <QStyle>
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#include <QStyleOptionSlider>
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#include <QWheelEvent>
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#include <QtDebug>
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#include "core/timeconstants.h"
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#include "core/utilities.h"
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#include "tracksliderpopup.h"
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TrackSliderSlider::TrackSliderSlider(QWidget* parent)
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: QSlider(parent),
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popup_(new TrackSliderPopup(window())),
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mouse_hover_seconds_(0) {
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setMouseTracking(true);
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popup_->hide();
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connect(this, SIGNAL(valueChanged(int)), SLOT(UpdateDeltaTime()));
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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
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// page step). We force our own behaviour here because it makes more sense
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// 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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else if (abs_buttons & Qt::MidButton)
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new_button = Qt::MidButton;
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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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QMouseEvent new_event(e->type(), e->pos(), new_button, new_button,
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e->modifiers());
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QSlider::mousePressEvent(&new_event);
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if (new_event.isAccepted()) e->accept();
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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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emit Previous();
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} else if (e->button() == Qt::XButton2) {
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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,
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QStyle::SC_SliderGroove, this);
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QRect sr = style()->subControlRect(QStyle::CC_Slider, &opt,
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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_ =
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QStyle::sliderValueFromPosition(minimum(), maximum(),
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e->x() - slider_length / 2 - slider_min,
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slider_max - slider_min) /
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kMsecPerSec;
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popup_->SetText(Utilities::PrettyTime(mouse_hover_seconds_));
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UpdateDeltaTime();
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popup_->SetPopupPosition(
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mapTo(window(), QPoint(e->x(), rect().center().y())));
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}
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void TrackSliderSlider::wheelEvent(QWheelEvent* e) {
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if (e->delta() < 0) {
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emit SeekBackward();
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} else {
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emit SeekForward();
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}
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e->accept();
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}
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void TrackSliderSlider::enterEvent(QEvent* e) {
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QSlider::enterEvent(e);
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if (isEnabled()) {
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popup_->show();
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}
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}
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void TrackSliderSlider::leaveEvent(QEvent* e) {
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QSlider::leaveEvent(e);
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// On some (but not all) systems, displaying the TrackSliderPopup
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// generates a leaveEvent. Ensure that this leaveEvent is genuine.
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if (!geometry().contains(mapFromGlobal(QCursor::pos()))) {
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popup_->hide();
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}
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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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emit SeekBackward();
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event->accept();
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} else if (event->key() == Qt::Key_Right || event->key() == Qt::Key_Up) {
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emit SeekForward();
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event->accept();
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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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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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}
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}
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