tdesktop/Telegram/SourceFiles/data/data_feed.cpp

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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 "data/data_feed.h"
#include "dialogs/dialogs_key.h"
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namespace Data {
FeedPosition::FeedPosition(const MTPFeedPosition &position)
: date(position.c_feedPosition().vdate.v)
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, msgId(
peerToChannel(peerFromMTP(position.c_feedPosition().vpeer)),
position.c_feedPosition().vid.v) {
}
FeedPosition::FeedPosition(not_null<HistoryItem*> item)
: date(toServerTime(item->date.toTime_t()).v)
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, msgId(item->fullId()) {
}
Feed::Feed(FeedId id)
: Entry(this)
, _id(id) {
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}
void Feed::registerOne(not_null<ChannelData*> channel) {
const auto history = App::history(channel);
if (!base::contains(_channels, history)) {
_channels.push_back(history);
if (history->lastMsg) {
updateLastMessage(history->lastMsg);
}
}
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}
void Feed::unregisterOne(not_null<ChannelData*> channel) {
const auto history = App::history(channel);
_channels.erase(ranges::remove(_channels, history), end(_channels));
if (_lastMessage->history() == history) {
messageRemoved(_lastMessage);
}
}
void Feed::updateLastMessage(not_null<HistoryItem*> item) {
if (justSetLastMessage(item)) {
setChatsListDate(_lastMessage->date);
}
}
void Feed::loadUserpic() {
constexpr auto kPaintUserpicsCount = 4;
auto load = kPaintUserpicsCount;
for (const auto channel : _channels) {
channel->peer->loadUserpic();
if (!--load) {
break;
}
}
}
void Feed::paintUserpic(
Painter &p,
int x,
int y,
int size) const {
const auto small = (size - st::lineWidth) / 2;
const auto delta = size - small;
auto index = 0;
for (const auto channel : _channels) {
channel->peer->paintUserpic(p, x, y, small);
switch (++index) {
case 1:
case 3: x += delta; break;
case 2: x -= delta; y += delta; break;
}
}
}
bool Feed::justSetLastMessage(not_null<HistoryItem*> item) {
if (_lastMessage && FeedPosition(item) <= FeedPosition(_lastMessage)) {
return false;
}
_lastMessage = item;
return true;
}
void Feed::messageRemoved(not_null<HistoryItem*> item) {
if (_lastMessage == item) {
recountLastMessage();
}
}
void Feed::historyCleared(not_null<History*> history) {
if (_lastMessage->history() == history) {
recountLastMessage();
}
}
void Feed::recountLastMessage() {
_lastMessage = nullptr;
for (const auto history : _channels) {
if (const auto last = history->lastMsg) {
justSetLastMessage(last);
}
}
if (_lastMessage) {
setChatsListDate(_lastMessage->date);
}
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}
void Feed::setUnreadCounts(int unreadCount, int unreadMutedCount) {
_unreadCount = unreadCount;
_unreadMutedCount = unreadMutedCount;
}
void Feed::setUnreadPosition(const FeedPosition &position) {
_unreadPosition = position;
}
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} // namespace Data