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#pragma once
#include "Cache.h"
#include "RoomInfoListItem.h"
#include "timeline/widgets/AudioItem.h"
#include "timeline/widgets/FileItem.h"
#include "timeline/widgets/ImageItem.h"
#include "timeline/widgets/VideoItem.h"
#include <QDateTime>
#include <QPixmap>
#include <mtx/events/collections.hpp>
namespace utils {
using TimelineEvent = mtx::events::collections::TimelineEvents;
//! Human friendly timestamp representation.
QString
descriptiveTime(const QDateTime &then);
//! Generate a message description from the event to be displayed
//! in the RoomList.
DescInfo
getMessageDescription(const TimelineEvent &event, const QString &localUser, const QString &room_id);
//! Get the first character of a string, taking into account that
//! surrogate pairs might be in use.
QString
firstChar(const QString &input);
//! Get a human readable file size with the appropriate units attached.
QString
humanReadableFileSize(uint64_t bytes);
QString
event_body(const mtx::events::collections::TimelineEvents &event);
//! Match widgets/events with a description message.
template<class T>
QString
messageDescription(const QString &username = "", const QString &body = "")
{
using Audio = mtx::events::RoomEvent<mtx::events::msg::Audio>;
using Emote = mtx::events::RoomEvent<mtx::events::msg::Emote>;
using File = mtx::events::RoomEvent<mtx::events::msg::File>;
using Image = mtx::events::RoomEvent<mtx::events::msg::Image>;
using Notice = mtx::events::RoomEvent<mtx::events::msg::Notice>;
using Sticker = mtx::events::Sticker;
using Text = mtx::events::RoomEvent<mtx::events::msg::Text>;
using Video = mtx::events::RoomEvent<mtx::events::msg::Video>;
if (std::is_same<T, AudioItem>::value || std::is_same<T, Audio>::value)
return QString("sent an audio clip");
else if (std::is_same<T, ImageItem>::value || std::is_same<T, Image>::value)
return QString("sent an image");
else if (std::is_same<T, FileItem>::value || std::is_same<T, File>::value)
return QString("sent a file");
else if (std::is_same<T, VideoItem>::value || std::is_same<T, Video>::value)
return QString("sent a video clip");
else if (std::is_same<T, StickerItem>::value || std::is_same<T, Sticker>::value)
return QString("sent a sticker");
else if (std::is_same<T, Notice>::value)
return QString("sent a notification");
else if (std::is_same<T, Text>::value)
return QString(": %1").arg(body);
else if (std::is_same<T, Emote>::value)
return QString("* %1 %2").arg(username).arg(body);
}
template<class T, class Event>
DescInfo
createDescriptionInfo(const Event &event, const QString &localUser, const QString &room_id)
{
using Text = mtx::events::RoomEvent<mtx::events::msg::Text>;
using Emote = mtx::events::RoomEvent<mtx::events::msg::Emote>;
const auto msg = mpark::get<T>(event);
const auto sender = QString::fromStdString(msg.sender);
const auto username = Cache::displayName(room_id, sender);
const auto ts = QDateTime::fromMSecsSinceEpoch(msg.origin_server_ts);
bool isText = std::is_same<T, Text>::value;
bool isEmote = std::is_same<T, Emote>::value;
return DescInfo{
isEmote ? "" : (sender == localUser ? "You" : username),
sender,
(isText || isEmote)
? messageDescription<T>(username, QString::fromStdString(msg.content.body).trimmed())
: QString(" %1").arg(messageDescription<T>()),
utils::descriptiveTime(ts),
ts};
}
//! Scale down an image to fit to the given width & height limitations.
template<class ImageType>
ImageType
scaleDown(uint64_t max_width, uint64_t max_height, const ImageType &source)
{
if (source.isNull())
return QPixmap();
auto width_ratio = (double)max_width / (double)source.width();
auto height_ratio = (double)max_height / (double)source.height();
auto min_aspect_ratio = std::min(width_ratio, height_ratio);
int final_width = 0;
int final_height = 0;
if (min_aspect_ratio > 1) {
final_width = source.width();
final_height = source.height();
} else {
final_width = source.width() * min_aspect_ratio;
final_height = source.height() * min_aspect_ratio;
}
return source.scaled(
final_width, final_height, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
}
//! Delete items in a container based on a predicate.
template<typename ContainerT, typename PredicateT>
void
erase_if(ContainerT &items, const PredicateT &predicate)
{
for (auto it = items.begin(); it != items.end();) {
if (predicate(*it))
it = items.erase(it);
else
++it;
}
}
inline mtx::events::EventType
event_type(const mtx::events::collections::TimelineEvents &event)
{
return mpark::visit([](auto msg) { return msg.type; }, event);
}
inline std::string
event_id(const mtx::events::collections::TimelineEvents &event)
{
return mpark::visit([](auto msg) { return msg.event_id; }, event);
}
inline QString
eventId(const mtx::events::collections::TimelineEvents &event)
{
return QString::fromStdString(event_id(event));
}
inline QString
event_sender(const mtx::events::collections::TimelineEvents &event)
{
return mpark::visit([](auto msg) { return QString::fromStdString(msg.sender); }, event);
}
template<class T>
QString
message_body(const mtx::events::collections::TimelineEvents &event)
{
return QString::fromStdString(mpark::get<T>(event).content.body);
}
//! Calculate the Levenshtein distance between two strings with character skipping.
int
levenshtein_distance(const std::string &s1, const std::string &s2);
QPixmap
scaleImageToPixmap(const QImage &img, int size);
}
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