mirror of https://github.com/procxx/kepka.git
262 lines
9.3 KiB
C++
262 lines
9.3 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/player/media_player_button.h"
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#include "styles/style_widgets.h"
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namespace Media {
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namespace Player {
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PlayButtonLayout::PlayButtonLayout(const style::MediaPlayerButton &st, base::lambda<void()> callback)
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: _st(st)
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, _callback(std::move(callback)) {
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}
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void PlayButtonLayout::setState(State state) {
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if (_nextState == state) return;
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_nextState = state;
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if (!_transformProgress.animating(getms())) {
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_oldState = _state;
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_state = _nextState;
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_transformBackward = false;
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if (_state != _oldState) {
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startTransform(0., 1.);
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if (_callback) _callback();
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}
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} else if (_oldState == _nextState) {
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qSwap(_oldState, _state);
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startTransform(_transformBackward ? 0. : 1., _transformBackward ? 1. : 0.);
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_transformBackward = !_transformBackward;
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}
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}
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void PlayButtonLayout::finishTransform() {
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_transformProgress.finish();
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_transformBackward = false;
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if (_callback) _callback();
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}
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void PlayButtonLayout::paint(Painter &p, const QBrush &brush) {
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if (_transformProgress.animating(getms())) {
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auto from = _oldState, to = _state;
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auto backward = _transformBackward;
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auto progress = _transformProgress.current(1.);
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if (from == State::Cancel || (from == State::Pause && to == State::Play)) {
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qSwap(from, to);
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backward = !backward;
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}
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if (backward) progress = 1. - progress;
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Assert(from != to);
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if (from == State::Play) {
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if (to == State::Pause) {
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paintPlayToPause(p, brush, progress);
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} else {
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Assert(to == State::Cancel);
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paintPlayToCancel(p, brush, progress);
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}
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} else {
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Assert(from == State::Pause && to == State::Cancel);
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paintPauseToCancel(p, brush, progress);
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}
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} else {
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switch (_state) {
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case State::Play: paintPlay(p, brush); break;
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case State::Pause: paintPlayToPause(p, brush, 1.); break;
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case State::Cancel: paintPlayToCancel(p, brush, 1.); break;
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}
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}
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}
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void PlayButtonLayout::paintPlay(Painter &p, const QBrush &brush) {
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auto playLeft = 0. + _st.playPosition.x();
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auto playTop = 0. + _st.playPosition.y();
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auto playWidth = _st.playOuter.width() - 2 * playLeft;
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auto playHeight = _st.playOuter.height() - 2 * playTop;
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PainterHighQualityEnabler hq(p);
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p.setPen(Qt::NoPen);
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QPainterPath pathPlay;
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pathPlay.moveTo(playLeft, playTop);
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pathPlay.lineTo(playLeft + playWidth, playTop + (playHeight / 2.));
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pathPlay.lineTo(playLeft, playTop + playHeight);
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pathPlay.lineTo(playLeft, playTop);
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p.fillPath(pathPlay, brush);
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}
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void PlayButtonLayout::paintPlayToPause(Painter &p, const QBrush &brush, float64 progress) {
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auto playLeft = 0. + _st.playPosition.x();
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auto playTop = 0. + _st.playPosition.y();
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auto playWidth = _st.playOuter.width() - 2 * playLeft;
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auto playHeight = _st.playOuter.height() - 2 * playTop;
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auto pauseLeft = 0. + _st.pausePosition.x();
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auto pauseTop = 0. + _st.pausePosition.y();
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auto pauseWidth = _st.pauseOuter.width() - 2 * pauseLeft;
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auto pauseHeight = _st.pauseOuter.height() - 2 * pauseTop;
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auto pauseStroke = 0. + _st.pauseStroke;
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p.setPen(Qt::NoPen);
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PainterHighQualityEnabler hq(p);
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QPointF pathLeftPause[] = {
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{ pauseLeft, pauseTop },
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{ pauseLeft + pauseStroke, pauseTop },
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{ pauseLeft + pauseStroke, pauseTop + pauseHeight },
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{ pauseLeft, pauseTop + pauseHeight },
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};
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QPointF pathLeftPlay[] = {
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{ playLeft, playTop },
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{ playLeft + (playWidth / 2.), playTop + (playHeight / 4.) },
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{ playLeft + (playWidth / 2.), playTop + (3 * playHeight / 4.) },
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{ playLeft, playTop + playHeight },
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};
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p.fillPath(anim::interpolate(pathLeftPlay, pathLeftPause, progress), brush);
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QPointF pathRightPause[] = {
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{ pauseLeft + pauseWidth - pauseStroke, pauseTop },
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{ pauseLeft + pauseWidth, pauseTop },
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{ pauseLeft + pauseWidth, pauseTop + pauseHeight },
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{ pauseLeft + pauseWidth - pauseStroke, pauseTop + pauseHeight },
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};
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QPointF pathRightPlay[] = {
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{ playLeft + (playWidth / 2.), playTop + (playHeight / 4.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + (playWidth / 2.), playTop + (3 * playHeight / 4.) },
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};
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p.fillPath(anim::interpolate(pathRightPlay, pathRightPause, progress), brush);
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}
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void PlayButtonLayout::paintPlayToCancel(Painter &p, const QBrush &brush, float64 progress) {
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static const auto sqrt2 = sqrt(2.);
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auto playLeft = 0. + _st.playPosition.x();
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auto playTop = 0. + _st.playPosition.y();
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auto playWidth = _st.playOuter.width() - 2 * playLeft;
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auto playHeight = _st.playOuter.height() - 2 * playTop;
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auto cancelLeft = 0. + _st.cancelPosition.x();
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auto cancelTop = 0. + _st.cancelPosition.y();
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auto cancelWidth = _st.cancelOuter.width() - 2 * cancelLeft;
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auto cancelHeight = _st.cancelOuter.height() - 2 * cancelTop;
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auto cancelStroke = (0. + _st.cancelStroke) / sqrt2;
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p.setPen(Qt::NoPen);
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PainterHighQualityEnabler hq(p);
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QPointF pathPlay[] = {
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{ playLeft, playTop },
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{ playLeft, playTop },
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{ playLeft + (playWidth / 2.), playTop + (playHeight / 4.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + playWidth, playTop + (playHeight / 2.) },
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{ playLeft + (playWidth / 2.), playTop + (3 * playHeight / 4.) },
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{ playLeft, playTop + playHeight },
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{ playLeft, playTop + playHeight },
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{ playLeft, playTop + (playHeight / 2.) },
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};
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QPointF pathCancel[] = {
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{ cancelLeft, cancelTop + cancelStroke },
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{ cancelLeft + cancelStroke, cancelTop },
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{ cancelLeft + (cancelWidth / 2.), cancelTop + (cancelHeight / 2.) - cancelStroke },
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{ cancelLeft + cancelWidth - cancelStroke, cancelTop },
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{ cancelLeft + cancelWidth, cancelTop + cancelStroke },
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{ cancelLeft + (cancelWidth / 2.) + cancelStroke, cancelTop + (cancelHeight / 2.) },
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{ cancelLeft + cancelWidth, cancelTop + cancelHeight - cancelStroke },
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{ cancelLeft + cancelWidth - cancelStroke, cancelTop + cancelHeight },
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{ cancelLeft + (cancelWidth / 2.), cancelTop + (cancelHeight / 2.) + cancelStroke },
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{ cancelLeft + cancelStroke, cancelTop + cancelHeight },
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{ cancelLeft, cancelTop + cancelHeight - cancelStroke },
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{ cancelLeft + (cancelWidth / 2.) - cancelStroke, cancelTop + (cancelHeight / 2.) },
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};
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p.fillPath(anim::interpolate(pathPlay, pathCancel, progress), brush);
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}
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void PlayButtonLayout::paintPauseToCancel(Painter &p, const QBrush &brush, float64 progress) {
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static const auto sqrt2 = sqrt(2.);
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auto pauseLeft = 0. + _st.pausePosition.x();
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auto pauseTop = 0. + _st.pausePosition.y();
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auto pauseWidth = _st.pauseOuter.width() - 2 * pauseLeft;
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auto pauseHeight = _st.pauseOuter.height() - 2 * pauseTop;
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auto pauseStroke = 0. + _st.pauseStroke;
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auto cancelLeft = 0. + _st.cancelPosition.x();
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auto cancelTop = 0. + _st.cancelPosition.y();
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auto cancelWidth = _st.cancelOuter.width() - 2 * cancelLeft;
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auto cancelHeight = _st.cancelOuter.height() - 2 * cancelTop;
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auto cancelStroke = (0. + _st.cancelStroke) / sqrt2;
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p.setPen(Qt::NoPen);
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PainterHighQualityEnabler hq(p);
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QPointF pathLeftPause[] = {
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{ pauseLeft, pauseTop },
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{ pauseLeft + pauseStroke, pauseTop },
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{ pauseLeft + pauseStroke, pauseTop + pauseHeight },
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{ pauseLeft, pauseTop + pauseHeight },
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};
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QPointF pathLeftCancel[] = {
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{ cancelLeft, cancelTop + cancelStroke },
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{ cancelLeft + cancelStroke, cancelTop },
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{ cancelLeft + cancelWidth, cancelTop + cancelHeight - cancelStroke },
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{ cancelLeft + cancelWidth - cancelStroke, cancelTop + cancelHeight },
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};
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p.fillPath(anim::interpolate(pathLeftPause, pathLeftCancel, progress), brush);
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QPointF pathRightPause[] = {
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{ pauseLeft + pauseWidth - pauseStroke, pauseTop },
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{ pauseLeft + pauseWidth, pauseTop },
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{ pauseLeft + pauseWidth, pauseTop + pauseHeight },
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{ pauseLeft + pauseWidth - pauseStroke, pauseTop + pauseHeight },
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};
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QPointF pathRightCancel[] = {
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{ cancelLeft + cancelWidth - cancelStroke, cancelTop },
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{ cancelLeft + cancelWidth, cancelTop + cancelStroke },
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{ cancelLeft + cancelStroke, cancelTop + cancelHeight },
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{ cancelLeft, cancelTop + cancelHeight - cancelStroke },
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};
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p.fillPath(anim::interpolate(pathRightPause, pathRightCancel, progress), brush);
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}
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void PlayButtonLayout::animationCallback() {
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if (!_transformProgress.animating()) {
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auto finalState = _nextState;
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_nextState = _state;
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setState(finalState);
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}
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_callback();
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}
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void PlayButtonLayout::startTransform(float64 from, float64 to) {
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_transformProgress.start([this] { animationCallback(); }, from, to, st::mediaPlayerButtonTransformDuration);
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}
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} // namespace Player
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} // namespace Media
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