tdesktop/Telegram/SourceFiles/ui/buttons/history_down_button.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) 2014-2016 John Preston, https://desktop.telegram.org
*/
#include "stdafx.h"
#include "ui/buttons/history_down_button.h"
#include "styles/style_history.h"
#include "dialogs/dialogs_layout.h"
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namespace Ui {
HistoryDownButton::HistoryDownButton(QWidget *parent) : Button(parent)
//, a_arrowOpacity(st::historyAttachEmoji.opacity, st::historyAttachEmoji.opacity)
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, _a_arrowOver(animation(this, &HistoryDownButton::step_arrowOver)) {
setCursor(style::cur_pointer);
int iconWidth = st::historyToDown.width();
int iconHeight = st::historyToDown.height();
int retina = cIntRetinaFactor();
resize(iconWidth, st::historyToDownPaddingTop + iconHeight);
QImage cache(iconWidth * retina, iconHeight * retina, QImage::Format_ARGB32_Premultiplied);
cache.setDevicePixelRatio(cRetinaFactor());
{
Painter p(&cache);
p.setCompositionMode(QPainter::CompositionMode_Source);
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p.fillRect(0, 0, iconWidth, iconHeight, Qt::transparent);
st::historyToDown.paint(p, QPoint(0, 0), st::historyToDown.width());
}
_cache = App::pixmapFromImageInPlace(std_::move(cache));
_cache.setDevicePixelRatio(cRetinaFactor());
hide();
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}
void HistoryDownButton::paintEvent(QPaintEvent *e) {
Painter p(this);
if (_a_show.animating(getms())) {
p.setOpacity(_a_show.current());
p.drawPixmap(0, st::historyToDownPaddingTop, _cache);
} else if (!_shown) {
hide();
return;
} else {
st::historyToDown.paint(p, QPoint(0, st::historyToDownPaddingTop), width());
}
st::historyToDownArrow.paint(p, QPoint(0, st::historyToDownPaddingTop), width());
if (_unreadCount > 0) {
auto unreadString = QString::number(_unreadCount);
if (unreadString.size() > 4) {
unreadString = qsl("..") + unreadString.mid(unreadString.size() - 4);
}
Dialogs::Layout::UnreadBadgeStyle st;
st.align = style::al_center;
st.font = st::historyToDownBadgeFont;
st.size = st::historyToDownBadgeSize;
st.sizeId = Dialogs::Layout::UnreadBadgeInHistoryToDown;
Dialogs::Layout::paintUnreadCount(p, unreadString, width(), 0, st, nullptr);
}
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}
void HistoryDownButton::onStateChanged(int oldState, ButtonStateChangeSource source) {
//a_arrowOpacity.start((_state & (StateOver | StateDown)) ? st::historyAttachEmoji.overOpacity : st::historyAttachEmoji.opacity);
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if (source == ButtonByUser || source == ButtonByPress) {
_a_arrowOver.stop();
a_arrowOpacity.finish();
update();
} else {
_a_arrowOver.start();
}
}
void HistoryDownButton::setUnreadCount(int unreadCount) {
_unreadCount = unreadCount;
update();
}
bool HistoryDownButton::hidden() const {
return !_shown;
}
void HistoryDownButton::showAnimated() {
if (_shown) return;
if (isHidden()) show();
toggleAnimated();
}
void HistoryDownButton::hideAnimated() {
if (!_shown) return;
toggleAnimated();
}
void HistoryDownButton::toggleAnimated() {
_shown = !_shown;
float64 from = _shown ? 0. : 1., to = _shown ? 1. : 0.;
_a_show.start([this] { update(); }, from, to, st::historyAttachEmoji.duration);
}
void HistoryDownButton::finishAnimation() {
_a_show.finish();
setVisible(_shown);
}
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void HistoryDownButton::step_arrowOver(float64 ms, bool timer) {
float64 dt = ms / st::historyAttachEmoji.duration;
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if (dt >= 1) {
_a_arrowOver.stop();
a_arrowOpacity.finish();
} else {
a_arrowOpacity.update(dt, anim::linear);
}
if (timer) update();
}
EmojiButton::EmojiButton(QWidget *parent, const style::IconButton &st) : Button(parent)
, _st(st)
, _a_loading(animation(this, &EmojiButton::step_loading)) {
resize(_st.width, _st.height);
setCursor(style::cur_pointer);
}
void EmojiButton::paintEvent(QPaintEvent *e) {
Painter p(this);
uint64 ms = getms();
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p.fillRect(e->rect(), st::historyComposeAreaBg);
auto loading = a_loading.current(ms, _loading ? 1 : 0);
p.setOpacity(1 - loading);
auto over = (_state & StateOver);
auto icon = &(over ? _st.iconOver : _st.icon);
icon->paint(p, (_state & StateDown) ? _st.iconPositionDown : _st.iconPosition, width());
p.setOpacity(1.);
p.setPen(QPen(over ? st::historyEmojiCircleFgOver : st::historyEmojiCircleFg, st::historyEmojiCircleLine));
p.setBrush(Qt::NoBrush);
p.setRenderHint(QPainter::HighQualityAntialiasing);
QRect inner(QPoint((width() - st::historyEmojiCircle.width()) / 2, st::historyEmojiCircleTop), st::historyEmojiCircle);
if (loading > 0) {
int32 full = 5760;
int32 start = qRound(full * float64(ms % uint64(st::historyEmojiCirclePeriod)) / st::historyEmojiCirclePeriod), part = qRound(loading * full / st::historyEmojiCirclePart);
p.drawArc(inner, start, full - part);
} else {
p.drawEllipse(inner);
}
p.setRenderHint(QPainter::HighQualityAntialiasing, false);
}
void EmojiButton::setLoading(bool loading) {
if (_loading != loading) {
_loading = loading;
auto from = loading ? 0. : 1., to = loading ? 1. : 0.;
a_loading.start([this] { update(); }, from, to, st::historyEmojiCircleDuration);
if (loading) {
_a_loading.start();
} else {
_a_loading.stop();
}
}
}
void EmojiButton::onStateChanged(int oldState, ButtonStateChangeSource source) {
auto over = (_state & StateOver);
if (over != (oldState & StateOver)) {
update();
}
}
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} // namespace Ui