100 lines
2.8 KiB
C++
100 lines
2.8 KiB
C++
/*
|
|
This file is part of Telegram Desktop,
|
|
the official desktop application for the Telegram messaging service.
|
|
|
|
For license and copyright information please follow this link:
|
|
https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
|
|
*/
|
|
#include "media/view/media_clip_volume_controller.h"
|
|
|
|
#include "styles/style_mediaview.h"
|
|
|
|
namespace Media {
|
|
namespace Clip {
|
|
|
|
VolumeController::VolumeController(QWidget *parent) : TWidget(parent) {
|
|
resize(st::mediaviewVolumeSize);
|
|
setCursor(style::cur_pointer);
|
|
setMouseTracking(true);
|
|
}
|
|
|
|
void VolumeController::setVolume(float64 volume) {
|
|
_volume = volume;
|
|
update();
|
|
}
|
|
|
|
void VolumeController::paintEvent(QPaintEvent *e) {
|
|
Painter p(this);
|
|
|
|
int32 top = st::mediaviewVolumeIconTop;
|
|
int32 left = (width() - st::mediaviewVolumeIcon.width()) / 2;
|
|
int32 mid = left + qRound(st::mediaviewVolumeIcon.width() * _volume);
|
|
int32 right = left + st::mediaviewVolumeIcon.width();
|
|
|
|
if (mid > left) {
|
|
p.setClipRect(rtlrect(left, top, mid - left, st::mediaviewVolumeIcon.height(), width()));
|
|
auto over = _a_over.current(getms(), _over ? 1. : 0.);
|
|
if (over < 1.) {
|
|
st::mediaviewVolumeOnIcon.paint(p, QPoint(left, top), width());
|
|
}
|
|
if (over > 0.) {
|
|
p.setOpacity(over);
|
|
st::mediaviewVolumeOnIconOver.paint(p, QPoint(left, top), width());
|
|
p.setOpacity(1.);
|
|
}
|
|
}
|
|
if (right > mid) {
|
|
p.setClipRect(rtlrect(mid, top, right - mid, st::mediaviewVolumeIcon.height(), width()));
|
|
st::mediaviewVolumeIcon.paint(p, QPoint(left, top), width());
|
|
}
|
|
}
|
|
|
|
void VolumeController::mouseMoveEvent(QMouseEvent *e) {
|
|
if (_downCoord < 0) {
|
|
return;
|
|
}
|
|
int delta = e->pos().x() - _downCoord;
|
|
int left = (width() - st::mediaviewVolumeIcon.width()) / 2;
|
|
float64 startFrom = snap((_downCoord - left) / float64(st::mediaviewVolumeIcon.width()), 0., 1.);
|
|
float64 add = delta / float64(4 * st::mediaviewVolumeIcon.width());
|
|
auto newVolume = snap(startFrom + add, 0., 1.);
|
|
changeVolume(newVolume);
|
|
}
|
|
|
|
void VolumeController::mousePressEvent(QMouseEvent *e) {
|
|
_downCoord = snap(e->pos().x(), 0, width());
|
|
int left = (width() - st::mediaviewVolumeIcon.width()) / 2;
|
|
auto newVolume = snap((_downCoord - left) / float64(st::mediaviewVolumeIcon.width()), 0., 1.);
|
|
changeVolume(newVolume);
|
|
}
|
|
|
|
void VolumeController::changeVolume(float64 newVolume) {
|
|
if (newVolume != _volume) {
|
|
setVolume(newVolume);
|
|
emit volumeChanged(_volume);
|
|
}
|
|
}
|
|
|
|
void VolumeController::mouseReleaseEvent(QMouseEvent *e) {
|
|
_downCoord = -1;
|
|
}
|
|
|
|
void VolumeController::enterEventHook(QEvent *e) {
|
|
setOver(true);
|
|
}
|
|
|
|
void VolumeController::leaveEventHook(QEvent *e) {
|
|
setOver(false);
|
|
}
|
|
|
|
void VolumeController::setOver(bool over) {
|
|
if (_over == over) return;
|
|
|
|
_over = over;
|
|
auto from = _over ? 0. : 1., to = _over ? 1. : 0.;
|
|
_a_over.start([this] { update(); }, from, to, st::mediaviewOverDuration);
|
|
}
|
|
|
|
} // namespace Clip
|
|
} // namespace Media
|