mirror of
https://github.com/vale981/tdesktop
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08167a6a91
Currently the build without implicitly included precompiled header is not supported anyway (because Qt MOC source files do not include stdafx.h, they include plain headers). So when we decide to support building without implicitly included precompiled headers we'll have to fix all the headers anyway.
112 lines
3.4 KiB
C++
112 lines
3.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop 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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It 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#include "media/view/media_clip_volume_controller.h"
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#include "styles/style_mediaview.h"
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namespace Media {
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namespace Clip {
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VolumeController::VolumeController(QWidget *parent) : TWidget(parent) {
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resize(st::mediaviewVolumeSize);
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setCursor(style::cur_pointer);
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setMouseTracking(true);
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}
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void VolumeController::setVolume(float64 volume) {
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_volume = volume;
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update();
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}
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void VolumeController::paintEvent(QPaintEvent *e) {
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Painter p(this);
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int32 top = st::mediaviewVolumeIconTop;
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int32 left = (width() - st::mediaviewVolumeIcon.width()) / 2;
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int32 mid = left + qRound(st::mediaviewVolumeIcon.width() * _volume);
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int32 right = left + st::mediaviewVolumeIcon.width();
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if (mid > left) {
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p.setClipRect(rtlrect(left, top, mid - left, st::mediaviewVolumeIcon.height(), width()));
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auto over = _a_over.current(getms(), _over ? 1. : 0.);
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if (over < 1.) {
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st::mediaviewVolumeOnIcon.paint(p, QPoint(left, top), width());
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}
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if (over > 0.) {
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p.setOpacity(over);
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st::mediaviewVolumeOnIconOver.paint(p, QPoint(left, top), width());
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p.setOpacity(1.);
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}
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}
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if (right > mid) {
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p.setClipRect(rtlrect(mid, top, right - mid, st::mediaviewVolumeIcon.height(), width()));
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st::mediaviewVolumeIcon.paint(p, QPoint(left, top), width());
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}
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}
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void VolumeController::mouseMoveEvent(QMouseEvent *e) {
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if (_downCoord < 0) {
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return;
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}
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int delta = e->pos().x() - _downCoord;
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int left = (width() - st::mediaviewVolumeIcon.width()) / 2;
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float64 startFrom = snap((_downCoord - left) / float64(st::mediaviewVolumeIcon.width()), 0., 1.);
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float64 add = delta / float64(4 * st::mediaviewVolumeIcon.width());
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auto newVolume = snap(startFrom + add, 0., 1.);
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changeVolume(newVolume);
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}
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void VolumeController::mousePressEvent(QMouseEvent *e) {
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_downCoord = snap(e->pos().x(), 0, width());
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int left = (width() - st::mediaviewVolumeIcon.width()) / 2;
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auto newVolume = snap((_downCoord - left) / float64(st::mediaviewVolumeIcon.width()), 0., 1.);
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changeVolume(newVolume);
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}
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void VolumeController::changeVolume(float64 newVolume) {
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if (newVolume != _volume) {
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setVolume(newVolume);
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emit volumeChanged(_volume);
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}
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}
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void VolumeController::mouseReleaseEvent(QMouseEvent *e) {
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_downCoord = -1;
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}
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void VolumeController::enterEventHook(QEvent *e) {
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setOver(true);
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}
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void VolumeController::leaveEventHook(QEvent *e) {
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setOver(false);
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}
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void VolumeController::setOver(bool over) {
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if (_over == over) return;
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_over = over;
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auto from = _over ? 0. : 1., to = _over ? 1. : 0.;
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_a_over.start([this] { update(); }, from, to, st::mediaviewOverDuration);
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}
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} // namespace Clip
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} // namespace Media
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