tdesktop/Telegram/SourceFiles/window/window_slide_animation.cpp

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/*
This file is part of Telegram Desktop,
the official desktop version of Telegram messaging app, see https://telegram.org
Telegram Desktop is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
It is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
In addition, as a special exception, the copyright holders give permission
to link the code of portions of this program with the OpenSSL library.
Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
*/
2016-11-24 19:28:23 +00:00
#include "window/window_slide_animation.h"
#include "styles/style_window.h"
namespace Window {
void SlideAnimation::paintContents(Painter &p, const QRect &update) const {
int retina = cIntRetinaFactor();
// Animation callback can destroy "this", so we don't pass "ms".
auto progress = _animation.current((_direction == SlideDirection::FromLeft) ? 0. : 1.);
auto coordUnder = anim::interpolate(0, -st::slideShift, progress);
auto coordOver = anim::interpolate(_cacheOver.width() / cIntRetinaFactor(), 0, progress);
if (coordOver) {
p.drawPixmap(QRect(0, 0, coordOver, _cacheUnder.height() / retina), _cacheUnder, QRect(-coordUnder * retina, 0, coordOver * retina, _cacheUnder.height()));
p.setOpacity(progress);
p.fillRect(0, 0, coordOver, _cacheUnder.height() / retina, st::slideFadeOutBg);
p.setOpacity(1);
}
p.drawPixmap(QRect(coordOver, 0, _cacheOver.width() / retina, _cacheOver.height() / retina), _cacheOver, QRect(0, 0, _cacheOver.width(), _cacheOver.height()));
p.setOpacity(progress);
st::slideShadow.fill(p, QRect(coordOver - st::slideShadow.width(), 0, st::slideShadow.width(), _cacheOver.height() / retina));
if (_topBarShadowEnabled) {
p.setOpacity(1);
p.fillRect(0, st::topBarHeight, _cacheOver.width() / retina, st::lineWidth, st::shadowFg);
}
}
void SlideAnimation::setDirection(SlideDirection direction) {
_direction = direction;
}
void SlideAnimation::setPixmaps(const QPixmap &oldContentCache, const QPixmap &newContentCache) {
_cacheUnder = oldContentCache;
_cacheOver = newContentCache;
}
void SlideAnimation::setTopBarShadow(bool enabled) {
_topBarShadowEnabled = enabled;
}
void SlideAnimation::setRepaintCallback(RepaintCallback &&callback) {
_repaintCallback = std::move(callback);
}
void SlideAnimation::setFinishedCallback(FinishedCallback &&callback) {
_finishedCallback = std::move(callback);
}
void SlideAnimation::start() {
auto delta = st::slideShift;
auto fromLeft = (_direction == SlideDirection::FromLeft);
if (fromLeft) std::swap(_cacheUnder, _cacheOver);
_animation.start([this] { animationCallback(); }, fromLeft ? 1. : 0., fromLeft ? 0. : 1., st::slideDuration, transition());
_repaintCallback();
}
void SlideAnimation::animationCallback() {
_repaintCallback();
if (!_animation.animating()) {
if (_finishedCallback) {
_finishedCallback();
}
}
}
} // namespace Window