293 lines
6.9 KiB
C++
293 lines
6.9 KiB
C++
/*
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This file is part of Telegram Desktop,
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an unofficial desktop 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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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014 John Preston, https://tdesktop.com
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*/
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#pragma once
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#include "types.h"
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#include <QtCore/QTimer>
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#include <QtGui/QColor>
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class Animated;
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namespace anim {
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typedef float64 (*transition)(const float64 &delta, const float64 &dt);
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float64 linear(const float64 &delta, const float64 &dt);
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float64 sineInOut(const float64 &delta, const float64 &dt);
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float64 halfSine(const float64 &delta, const float64 &dt);
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float64 easeOutBack(const float64 &delta, const float64 &dt);
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float64 easeInCirc(const float64 &delta, const float64 &dt);
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float64 easeOutCirc(const float64 &delta, const float64 &dt);
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float64 easeInCubic(const float64 &delta, const float64 &dt);
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float64 easeOutCubic(const float64 &delta, const float64 &dt);
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float64 easeInQuint(const float64 &delta, const float64 &dt);
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float64 easeOutQuint(const float64 &delta, const float64 &dt);
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class fvalue { // float animated value
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public:
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fvalue() {
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}
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fvalue(const float64 &from) : _cur(from), _from(from), _delta(0) {
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}
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fvalue(const float64 &from, const float64 &to) : _cur(from), _from(from), _delta(to - from) {
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}
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void start(const float64 &to) {
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_from = _cur;
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_delta = to - _from;
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}
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void restart() {
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_delta = _from + _delta - _cur;
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_from = _cur;
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}
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const float64 ¤t() const {
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return _cur;
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}
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void update(const float64 &dt, transition func) {
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_cur = _from + (*func)(_delta, dt);
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}
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void finish() {
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_cur = _from + _delta;
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_from = _cur;
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_delta = 0;
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}
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private:
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float64 _cur, _from, _delta;
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};
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class ivalue { // int animated value
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public:
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ivalue() {
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}
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ivalue(int32 from) : _cur(from), _from(float64(from)), _delta(0) {
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}
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ivalue(int32 from, int32 to) : _cur(from), _from(float64(from)), _delta(float64(to - from)) {
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}
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void start(int32 to) {
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_from = float64(_cur);
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_delta = float64(to) - _from;
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}
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void restart() {
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_delta = _from + _delta - float64(_cur);
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_from = float64(_cur);
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}
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int32 current() const {
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return _cur;
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}
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void update(const float64 &dt, transition func) {
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_cur = qRound(_from + (*func)(_delta, dt));
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}
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void finish() {
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_cur = qRound(_from + _delta);
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_from = _cur;
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_delta = 0;
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}
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private:
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int32 _cur;
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float64 _from, _delta;
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};
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class cvalue { // QColor animated value
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public:
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cvalue() {
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}
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cvalue(const QColor &from) : _cur(from), _from_r(from.redF()), _from_g(from.greenF()), _from_b(from.blueF()), _from_a(from.alphaF()), _delta_r(0), _delta_g(0), _delta_b(0), _delta_a(0) {
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}
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cvalue(const QColor &from, const QColor &to)
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: _cur(from)
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, _from_r(from.redF()), _from_g(from.greenF()), _from_b(from.blueF()), _from_a(from.alphaF())
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, _delta_r(to.redF() - from.redF()), _delta_g(to.greenF() - from.greenF()), _delta_b(to.blueF() - from.blueF()), _delta_a(to.alphaF() - from.alphaF())
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{
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}
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void start(const QColor &to) {
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_from_r = _cur.redF();
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_from_g = _cur.greenF();
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_from_b = _cur.blueF();
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_from_a = _cur.alphaF();
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_delta_r = to.redF() - _from_r;
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_delta_g = to.greenF() - _from_g;
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_delta_b = to.blueF() - _from_b;
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_delta_a = to.alphaF() - _from_a;
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}
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void restart() {
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_delta_r = _from_r + _delta_r - _cur.redF();
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_delta_g = _from_g + _delta_g - _cur.greenF();
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_delta_b = _from_b + _delta_b - _cur.blueF();
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_delta_a = _from_a + _delta_a - _cur.alphaF();
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_from_r = _cur.redF();
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_from_g = _cur.greenF();
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_from_b = _cur.blueF();
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_from_a = _cur.alphaF();
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}
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const QColor ¤t() const {
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return _cur;
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}
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void update(const float64 &dt, transition func) {
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_cur.setRedF(_from_r + (*func)(_delta_r, dt));
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_cur.setGreenF(_from_g + (*func)(_delta_g, dt));
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_cur.setBlueF(_from_b + (*func)(_delta_b, dt));
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_cur.setAlphaF(_from_a + (*func)(_delta_a, dt));
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}
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void finish() {
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_cur.setRedF(_from_r + _delta_r);
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_cur.setGreenF(_from_g + _delta_g);
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_cur.setBlueF(_from_b + _delta_b);
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_cur.setAlphaF(_from_a + _delta_a);
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_from_r = _cur.redF();
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_from_g = _cur.greenF();
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_from_b = _cur.blueF();
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_from_a = _cur.alphaF();
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_delta_r = _delta_g = _delta_b = _delta_a = 0;
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}
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private:
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QColor _cur;
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float64 _from_r, _from_g, _from_b, _from_a, _delta_r, _delta_g, _delta_b, _delta_a;
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};
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void start(Animated *obj);
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void stop(Animated *obj);
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void startManager();
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void stopManager();
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};
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class Animated {
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public:
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Animated() : animStarted(0), animInProcess(false) {
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}
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virtual bool animStep(float64 ms) = 0;
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void animReset() {
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animStarted = float64(getms());
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}
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virtual ~Animated() {
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if (animating()) {
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anim::stop(this);
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}
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}
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bool animating() const {
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return animInProcess;
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}
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private:
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float64 animStarted;
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bool animInProcess;
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friend class AnimationManager;
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};
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class AnimationManager : public QObject {
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Q_OBJECT
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public:
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AnimationManager() : timer(this), iterating(false) {
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timer.setSingleShot(false);
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connect(&timer, SIGNAL(timeout()), this, SLOT(timeout()));
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}
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void start(Animated *obj) {
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obj->animReset();
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if (iterating) {
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toStart.insert(obj);
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if (!toStop.isEmpty()) {
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toStop.remove(obj);
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}
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} else {
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if (!objs.size()) {
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timer.start(7);
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}
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objs.insert(obj);
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}
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obj->animInProcess = true;
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}
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void stop(Animated *obj) {
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if (iterating) {
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toStop.insert(obj);
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if (!toStart.isEmpty()) {
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toStart.insert(obj);
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}
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} else {
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AnimObjs::iterator i = objs.find(obj);
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if (i != objs.cend()) {
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objs.erase(i);
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if (!objs.size()) {
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timer.stop();
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}
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}
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}
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obj->animInProcess = false;
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}
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public slots:
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void timeout() {
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iterating = true;
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float64 ms = float64(getms());
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for (AnimObjs::iterator i = objs.begin(), e = objs.end(); i != e; ) {
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Animated *obj = *i;
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if (!obj->animStep(ms - obj->animStarted)) {
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i = objs.erase(i);
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obj->animInProcess = false;
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} else {
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++i;
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}
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}
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iterating = false;
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if (!toStart.isEmpty()) {
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for (AnimObjs::iterator i = toStart.begin(), e = toStart.end(); i != e; ++i) {
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objs.insert(*i);
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}
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toStart.clear();
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}
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if (!toStop.isEmpty()) {
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for (AnimObjs::iterator i = toStop.begin(), e = toStop.end(); i != e; ++i) {
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objs.remove(*i);
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}
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toStop.clear();
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}
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if (!objs.size()) {
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timer.stop();
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}
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}
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private:
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typedef QSet<Animated*> AnimObjs;
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AnimObjs objs;
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AnimObjs toStart;
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AnimObjs toStop;
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QTimer timer;
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bool iterating;
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};
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