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/*
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 "window/window_slide_animation.h"
#include "styles/style_window.h"
#include "styles/style_boxes.h"
namespace Window {
void SlideAnimation::paintContents(QPainter &p) const {
const auto retina = style::DevicePixelRatio();
const auto slideLeft = (_direction == SlideDirection::FromLeft);
const auto progress = _animation.value(slideLeft ? 0. : 1.);
if (_withFade) {
const auto dt = slideLeft
? (1. - progress)
: progress;
const auto easeOut = anim::easeOutCirc(1., dt);
const auto easeIn = anim::easeInCirc(1., dt);
const auto arrivingAlpha = easeIn;
const auto departingAlpha = 1. - easeOut;
const auto leftWidthFull = _cacheUnder.width() / retina;
const auto rightWidthFull = _cacheOver.width() / retina;
const auto leftCoord = slideLeft
? anim::interpolate(-leftWidthFull, 0, easeOut)
: anim::interpolate(0, -leftWidthFull, easeIn);
const auto leftAlpha = (slideLeft ? arrivingAlpha : departingAlpha);
const auto rightCoord = slideLeft
? anim::interpolate(0, rightWidthFull, easeIn)
: anim::interpolate(rightWidthFull, 0, easeOut);
const auto rightAlpha = (slideLeft ? departingAlpha : arrivingAlpha);
const auto leftWidth = (leftWidthFull + leftCoord);
const auto rightWidth = rightWidthFull - rightCoord;
if (!_mask.isNull()) {
auto frame = QImage(
_mask.size(),
QImage::Format_ARGB32_Premultiplied);
frame.setDevicePixelRatio(_mask.devicePixelRatio());
frame.fill(Qt::transparent);
QPainter q(&frame);
if (leftWidth > 0) {
q.setOpacity(leftAlpha);
q.drawPixmap(
0,
0,
_cacheUnder,
(_cacheUnder.width() - leftWidth * cIntRetinaFactor()),
0,
leftWidth * cIntRetinaFactor(),
_topSkip * retina);
}
if (rightWidth > 0) {
q.setOpacity(rightAlpha);
q.drawPixmap(
rightCoord,
0,
_cacheOver,
0,
0,
rightWidth * cIntRetinaFactor(),
_topSkip * retina);
}
q.setOpacity(1.);
q.setCompositionMode(QPainter::CompositionMode_DestinationIn);
q.drawPixmap(0, 0, _mask);
p.drawImage(0, 0, frame);
}
if (leftWidth > 0) {
p.setOpacity(leftAlpha);
p.drawPixmap(
0,
_topSkip,
_cacheUnder,
(_cacheUnder.width() - leftWidth * retina),
_topSkip * retina,
leftWidth * retina,
_cacheUnder.height() - _topSkip * retina);
}
if (rightWidth > 0) {
p.setOpacity(rightAlpha);
p.drawPixmap(
rightCoord,
_topSkip,
_cacheOver,
0,
_topSkip * retina,
rightWidth * retina,
_cacheOver.height() - _topSkip * retina);
}
} else {
const auto coordUnder = anim::interpolate(
0,
-st::slideShift,
progress);
const auto coordOver = anim::interpolate(
_cacheOver.width() / retina,
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(QPoint(coordOver, 0), _cacheOver.size() / retina),
_cacheOver,
QRect(QPoint(), _cacheOver.size()));
p.setOpacity(progress);
st::slideShadow.fill(
p,
QRect(
coordOver - st::slideShadow.width(),
0,
st::slideShadow.width(),
_cacheOver.height() / retina));
}
}
float64 SlideAnimation::progress() const {
const auto slideLeft = (_direction == SlideDirection::FromLeft);
const auto progress = _animation.value(slideLeft ? 0. : 1.);
return slideLeft ? (1. - progress) : progress;
}
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::setTopSkip(int skip) {
_topSkip = skip;
}
void SlideAnimation::setWithFade(bool withFade) {
_withFade = withFade;
}
void SlideAnimation::setRepaintCallback(RepaintCallback &&callback) {
_repaintCallback = std::move(callback);
}
void SlideAnimation::setFinishedCallback(FinishedCallback &&callback) {
_finishedCallback = std::move(callback);
}
void SlideAnimation::setTopBarMask(const QPixmap &mask) {
_mask = mask;
}
void SlideAnimation::start() {
const 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 (const auto onstack = _finishedCallback) {
onstack();
}
}
}
} // namespace Window
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