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Support audio, video, generic file for pasting (#220)

Browse source 
* Refactor widget items to use same interface

* Support audio, video, generic file for pasting

* Add utils function for human readable file sizes

* Set correct MIME type for media messages

This change also determines the size of the upload once from the
ContentLengthHeader, rather than seeking the QIODevice and asking for
its size. This prevents any future trouble in case the QIODevice is
sequential (cannot be seeked). The MIME type is also determined at
upload once, rather than using the QIODevice and the underlying data
inside.

* Allow for file urls to be used as fall-back

This fixes an issue on macOS which uses `text/uri-list` for copying
files to the clipboard.

fixes #228
This commit is contained in:
christarazi 2018-02-18 12:52:31 -08:00 committed by mujx
parent c8bfb02211
commit cd9d1a2ec6
25 changed files with 552 additions and 399 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
CMakeLists.txt
View file

@ -145,7 +145,7 @@ set(SRC_FILES
# Dialogs
src/dialogs/CreateRoom.cc
src/dialogs/ImageOverlay.cc
src/dialogs/PreviewImageOverlay.cc
src/dialogs/PreviewUploadOverlay.cc
src/dialogs/InviteUsers.cc
src/dialogs/JoinRoom.cc
src/dialogs/LeaveRoom.cc
@ -231,7 +231,7 @@ qt5_wrap_cpp(MOC_HEADERS
# Dialogs
include/dialogs/CreateRoom.h
include/dialogs/ImageOverlay.h
include/dialogs/PreviewImageOverlay.h
include/dialogs/PreviewUploadOverlay.h
include/dialogs/InviteUsers.h
include/dialogs/JoinRoom.h
include/dialogs/LeaveRoom.h

42
include/MatrixClient.h
View file

@ -39,7 +39,8 @@ public:
int txnId,
const QString &roomid,
const QString &msg,
const QFileInfo &info,
const QString &mime,
const int64_t media_size,
const QString &url = "") noexcept;
void login(const QString &username, const QString &password) noexcept;
void registerUser(const QString &username,
@ -58,14 +59,17 @@ public:
void downloadFile(const QString &event_id, const QUrl &url);
void messages(const QString &room_id, const QString &from_token, int limit = 30) noexcept;
void uploadImage(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename);
const QString &filename,
const QSharedPointer<QIODevice> data);
void uploadFile(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename);
const QString &filename,
const QSharedPointer<QIODevice> data);
void uploadAudio(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename);
const QString &filename,
const QSharedPointer<QIODevice> data);
void uploadVideo(const QString &roomid,
const QString &filename,
const QSharedPointer<QIODevice> data);
void uploadFilter(const QString &filter) noexcept;
void joinRoom(const QString &roomIdOrAlias);
void leaveRoom(const QString &roomId);
@ -108,12 +112,25 @@ signals:
const QString &token);
void versionSuccess();
void imageUploaded(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename,
const QString &url);
void fileUploaded(const QString &roomid, const QString &filename, const QString &url);
void audioUploaded(const QString &roomid, const QString &filename, const QString &url);
const QString &url,
const QString &mime,
const int64_t size);
void fileUploaded(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t size);
void audioUploaded(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t size);
void videoUploaded(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t size);
void roomAvatarRetrieved(const QString &roomid,
const QPixmap &img,
const QString &url,
@ -143,6 +160,7 @@ signals:
private:
QNetworkReply *makeUploadRequest(QSharedPointer<QIODevice> iodev);
QJsonObject getUploadReply(QNetworkReply *reply);
// Client API prefix.
QString clientApiUrl_;

22
include/TextInputWidget.h
View file

@ -27,12 +27,12 @@
#include "FlatButton.h"
#include "LoadingIndicator.h"
#include "dialogs/PreviewImageOverlay.h"
#include "dialogs/PreviewUploadOverlay.h"
#include "emoji/PickButton.h"
namespace dialogs {
class PreviewImageOverlay;
class PreviewUploadOverlay;
}
class FilteredTextEdit : public QTextEdit
@ -53,9 +53,13 @@ signals:
void heightChanged(int height);
void startedTyping();
void stoppedTyping();
void startedUpload();
void message(QString);
void command(QString name, QString args);
void image(const QSharedPointer<QIODevice> iodev, const QString &img_name);
void image(QSharedPointer<QIODevice> data, const QString &filename);
void audio(QSharedPointer<QIODevice> data, const QString &filename);
void video(QSharedPointer<QIODevice> data, const QString &filename);
void file(QSharedPointer<QIODevice> data, const QString &filename);
protected:
void keyPressEvent(QKeyEvent *event) override;
@ -67,11 +71,12 @@ private:
size_t history_index_;
QTimer *typingTimer_;
dialogs::PreviewImageOverlay previewDialog_;
dialogs::PreviewUploadOverlay previewDialog_;
void textChanged();
void receiveImage(const QByteArray img, const QString &img_name);
void uploadData(const QByteArray data, const QString &media, const QString &filename);
void afterCompletion(int);
void showPreview(const QMimeData *source, const QStringList &formats);
};
class TextInputWidget : public QWidget
@ -95,9 +100,10 @@ signals:
void sendTextMessage(QString msg);
void sendEmoteMessage(QString msg);
void uploadImage(QSharedPointer<QIODevice> data, const QString &filename);
void uploadFile(QSharedPointer<QIODevice> data, const QString &filename);
void uploadAudio(QSharedPointer<QIODevice> data, const QString &filename);
void uploadImage(const QSharedPointer<QIODevice> data, const QString &filename);
void uploadFile(const QSharedPointer<QIODevice> data, const QString &filename);
void uploadAudio(const QSharedPointer<QIODevice> data, const QString &filename);
void uploadVideo(const QSharedPointer<QIODevice> data, const QString &filename);
void sendJoinRoomRequest(const QString &room);

4
include/Utils.h
View file

@ -22,4 +22,8 @@ getMessageDescription(const TimelineEvent &event, const QString &localUser);
//! surrogate pairs might be in use.
QString
firstChar(const QString &input);
//! Get a human readable file size with the appropriate units attached.
QString
humanReadableFileSize(const uint64_t bytes);
}

22
include/dialogs/PreviewImageOverlay.h → include/dialogs/PreviewUploadOverlay.h
View file

@ -28,28 +28,32 @@ class QMimeData;
namespace dialogs {
class PreviewImageOverlay : public QWidget
class PreviewUploadOverlay : public QWidget
{
Q_OBJECT
public:
PreviewImageOverlay(QWidget *parent = nullptr);
PreviewUploadOverlay(QWidget *parent = nullptr);
void setImageAndCreate(const QByteArray data, const QString &type);
void setImageAndCreate(const QString &path);
void setPreview(const QByteArray data, const QString &mime);
void setPreview(const QString &path);
signals:
void confirmImageUpload(const QByteArray data, const QString &img_name);
void confirmUpload(const QByteArray data, const QString &media, const QString &filename);
private:
void init();
void setLabels(const QString &type, const QString &mime, const int upload_size);
bool isImage_;
QPixmap image_;
QByteArray imageData_;
QString imagePath_;
QByteArray data_;
QString filePath_;
QString mediaType_;
QLabel titleLabel_;
QLabel imageLabel_;
QLineEdit imageName_;
QLabel infoLabel_;
QLineEdit fileName_;
FlatButton upload_;
FlatButton cancel_;

22
include/timeline/TimelineView.h
View file

@ -44,6 +44,8 @@ struct PendingMessage
int txn_id;
QString body;
QString filename;
QString mime;
int64_t media_size;
QString event_id;
TimelineItem *widget;
@ -51,12 +53,16 @@ struct PendingMessage
int txn_id,
QString body,
QString filename,
QString mime,
int64_t media_size,
QString event_id,
TimelineItem *widget)
: ty(ty)
, txn_id(txn_id)
, body(body)
, filename(filename)
, mime(mime)
, media_size(media_size)
, event_id(event_id)
, widget(widget)
{}
@ -87,10 +93,10 @@ public:
void addUserMessage(mtx::events::MessageType ty, const QString &msg);
template<class Widget, mtx::events::MessageType MsgType>
void addUserMessage(
const QString &url,
const QString &filename,
const QSharedPointer<QIODevice> data = QSharedPointer<QIODevice>(nullptr));
void addUserMessage(const QString &url,
const QString &filename,
const QString &mime,
const int64_t size);
void updatePendingMessage(int txn_id, QString event_id);
void scrollDown();
QLabel *createDateSeparator(QDateTime datetime);
@ -236,11 +242,13 @@ template<class Widget, mtx::events::MessageType MsgType>
void
TimelineView::addUserMessage(const QString &url,
const QString &filename,
const QSharedPointer<QIODevice> data)
const QString &mime,
const int64_t size)
{
auto with_sender = lastSender_ != local_user_;
auto trimmed = QFileInfo{filename}.fileName(); // Trim file path.
auto widget = new Widget(client_, url, data, filename, this);
auto widget = new Widget(client_, url, trimmed, size, this);
TimelineItem *view_item =
new TimelineItem(widget, local_user_, with_sender, scroll_widget_);
@ -255,7 +263,7 @@ TimelineView::addUserMessage(const QString &url,
int txn_id = client_->incrementTransactionId();
PendingMessage message(MsgType, txn_id, url, filename, "", view_item);
PendingMessage message(MsgType, txn_id, url, trimmed, mime, size, "", view_item);
handleNewUserMessage(message);
}

22
include/timeline/TimelineViewManager.h
View file

@ -64,11 +64,25 @@ public slots:
void queueTextMessage(const QString &msg);
void queueEmoteMessage(const QString &msg);
void queueImageMessage(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename,
const QString &url);
void queueFileMessage(const QString &roomid, const QString &filename, const QString &url);
void queueAudioMessage(const QString &roomid, const QString &filename, const QString &url);
const QString &url,
const QString &mime,
const int64_t dsize);
void queueFileMessage(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t dsize);
void queueAudioMessage(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t dsize);
void queueVideoMessage(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t dsize);
private slots:
void messageSent(const QString &eventid, const QString &roomid, int txnid);

3
include/timeline/widgets/AudioItem.h
View file

@ -48,8 +48,8 @@ public:
AudioItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent = nullptr);
QSize sizeHint() const override;
@ -76,7 +76,6 @@ private slots:
void fileDownloaded(const QString &event_id, const QByteArray &data);
private:
QString calculateFileSize(int nbytes) const;
void init();
enum class AudioState

3
include/timeline/widgets/FileItem.h
View file

@ -42,8 +42,8 @@ public:
FileItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent = nullptr);
QSize sizeHint() const override;
@ -64,7 +64,6 @@ private slots:
void fileDownloaded(const QString &event_id, const QByteArray &data);
private:
QString calculateFileSize(int nbytes) const;
void openUrl();
void init();

2
include/timeline/widgets/ImageItem.h
View file

@ -36,8 +36,8 @@ public:
ImageItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent = nullptr);
void setImage(const QPixmap &image);

3
include/timeline/widgets/VideoItem.h
View file

@ -37,13 +37,12 @@ public:
VideoItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent = nullptr);
private:
void init();
QString calculateFileSize(int nbytes) const;
QUrl url_;
QString text_;

2
resources/styles/nheko-dark.qss
View file

@ -106,7 +106,7 @@ dialogs--CreateRoom,
dialogs--InviteUsers,
dialogs--ReadReceipts,
dialogs--JoinRoom,
dialogs--PreviewImageOverlay {
dialogs--PreviewUploadOverlay {
background-color: #383c4a;
color: #caccd1;
}

2
resources/styles/nheko.qss
View file

@ -109,7 +109,7 @@ dialogs--CreateRoom,
dialogs--InviteUsers,
dialogs--ReadReceipts,
dialogs--JoinRoom,
dialogs--PreviewImageOverlay,
dialogs--PreviewUploadOverlay,
QListWidget {
background-color: white;
color: #333;

31
src/ChatPage.cc
View file

@ -230,21 +230,27 @@ ChatPage::ChatPage(QSharedPointer<MatrixClient> client,
&TextInputWidget::uploadImage,
this,
[=](QSharedPointer<QIODevice> data, const QString &fn) {
client_->uploadImage(current_room_, data, fn);
client_->uploadImage(current_room_, fn, data);
});
connect(text_input_,
&TextInputWidget::uploadFile,
this,
[=](QSharedPointer<QIODevice> data, const QString &fn) {
client_->uploadFile(current_room_, data, fn);
client_->uploadFile(current_room_, fn, data);
});
connect(text_input_,
&TextInputWidget::uploadAudio,
this,
[=](QSharedPointer<QIODevice> data, const QString &fn) {
client_->uploadAudio(current_room_, data, fn);
client_->uploadAudio(current_room_, fn, data);
});
connect(text_input_,
&TextInputWidget::uploadVideo,
this,
[=](QSharedPointer<QIODevice> data, const QString &fn) {
client_->uploadVideo(current_room_, fn, data);
});
connect(
@ -253,23 +259,30 @@ ChatPage::ChatPage(QSharedPointer<MatrixClient> client,
connect(client_.data(),
&MatrixClient::imageUploaded,
this,
[=](QString roomid, QSharedPointer<QIODevice> data, QString filename, QString url) {
[=](QString roomid, QString filename, QString url, QString mime, int64_t dsize) {
text_input_->hideUploadSpinner();
view_manager_->queueImageMessage(roomid, data, filename, url);
view_manager_->queueImageMessage(roomid, filename, url, mime, dsize);
});
connect(client_.data(),
&MatrixClient::fileUploaded,
this,
[=](QString roomid, QString filename, QString url) {
[=](QString roomid, QString filename, QString url, QString mime, int64_t dsize) {
text_input_->hideUploadSpinner();
view_manager_->queueFileMessage(roomid, filename, url);
view_manager_->queueFileMessage(roomid, filename, url, mime, dsize);
});
connect(client_.data(),
&MatrixClient::audioUploaded,
this,
[=](QString roomid, QString filename, QString url) {
[=](QString roomid, QString filename, QString url, QString mime, int64_t dsize) {
text_input_->hideUploadSpinner();
view_manager_->queueAudioMessage(roomid, filename, url);
view_manager_->queueAudioMessage(roomid, filename, url, mime, dsize);
});
connect(client_.data(),
&MatrixClient::videoUploaded,
this,
[=](QString roomid, QString filename, QString url, QString mime, int64_t dsize) {
text_input_->hideUploadSpinner();
view_manager_->queueVideoMessage(roomid, filename, url, mime, dsize);
});
connect(room_list_, &RoomList::roomAvatarChanged, this, &ChatPage::updateTopBarAvatar);

187
src/MatrixClient.cc
View file

@ -280,7 +280,8 @@ MatrixClient::sendRoomMessage(mtx::events::MessageType ty,
int txnId,
const QString &roomid,
const QString &msg,
const QFileInfo &fileinfo,
const QString &mime,
const int64_t media_size,
const QString &url) noexcept
{
QUrlQuery query;
@ -291,14 +292,8 @@ MatrixClient::sendRoomMessage(mtx::events::MessageType ty,
QString("/rooms/%1/send/m.room.message/%2").arg(roomid).arg(txnId));
endpoint.setQuery(query);
QString msgType("");
QMimeDatabase db;
QMimeType mime =
db.mimeTypeForFile(fileinfo.absoluteFilePath(), QMimeDatabase::MatchContent);
QJsonObject body;
QJsonObject info = {{"size", fileinfo.size()}, {"mimetype", mime.name()}};
QJsonObject info = {{"size", static_cast<qint64>(media_size)}, {"mimetype", mime}};
switch (ty) {
case mtx::events::MessageType::Text:
@ -316,6 +311,9 @@ MatrixClient::sendRoomMessage(mtx::events::MessageType ty,
case mtx::events::MessageType::Audio:
body = {{"msgtype", "m.audio"}, {"body", msg}, {"url", url}, {"info", info}};
break;
case mtx::events::MessageType::Video:
body = {{"msgtype", "m.video"}, {"body", msg}, {"url", url}, {"info", info}};
break;
default:
qDebug() << "SendRoomMessage: Unknown message type for" << msg;
return;
@ -812,124 +810,97 @@ MatrixClient::messages(const QString &roomid, const QString &from_token, int lim
void
MatrixClient::uploadImage(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename)
const QString &filename,
const QSharedPointer<QIODevice> data)
{
auto reply = makeUploadRequest(data);
if (reply == nullptr)
return;
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, data, filename]() {
reply->deleteLater();
int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (status == 0 || status >= 400) {
emit syncFailed(reply->errorString());
return;
}
auto res_data = reply->readAll();
if (res_data.isEmpty())
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, filename, data]() {
auto json = getUploadReply(reply);
if (json.isEmpty())
return;
auto json = QJsonDocument::fromJson(res_data);
auto mime = reply->request().header(QNetworkRequest::ContentTypeHeader).toString();
auto size =
reply->request().header(QNetworkRequest::ContentLengthHeader).toLongLong();
if (!json.isObject()) {
qDebug() << "Media upload: Response is not a json object.";
return;
}
QJsonObject object = json.object();
if (!object.contains("content_uri")) {
qDebug() << "Media upload: Missing content_uri key";
qDebug() << object;
return;
}
emit imageUploaded(roomid, data, filename, object.value("content_uri").toString());
emit imageUploaded(
roomid, filename, json.value("content_uri").toString(), mime, size);
});
}
void
MatrixClient::uploadFile(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename)
const QString &filename,
const QSharedPointer<QIODevice> data)
{
auto reply = makeUploadRequest(data);
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, data, filename]() {
reply->deleteLater();
if (reply == nullptr)
return;
int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (status == 0 || status >= 400) {
emit syncFailed(reply->errorString());
return;
}
auto data = reply->readAll();
if (data.isEmpty())
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, filename, data]() {
auto json = getUploadReply(reply);
if (json.isEmpty())
return;
auto json = QJsonDocument::fromJson(data);
auto mime = reply->request().header(QNetworkRequest::ContentTypeHeader).toString();
auto size =
reply->request().header(QNetworkRequest::ContentLengthHeader).toLongLong();
if (!json.isObject()) {
qDebug() << "Media upload: Response is not a json object.";
return;
}
QJsonObject object = json.object();
if (!object.contains("content_uri")) {
qDebug() << "Media upload: Missing content_uri key";
qDebug() << object;
return;
}
emit fileUploaded(roomid, filename, object.value("content_uri").toString());
emit fileUploaded(
roomid, filename, json.value("content_uri").toString(), mime, size);
});
}
void
MatrixClient::uploadAudio(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename)
const QString &filename,
const QSharedPointer<QIODevice> data)
{
auto reply = makeUploadRequest(data);
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, data, filename]() {
reply->deleteLater();
if (reply == nullptr)
return;
int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (status == 0 || status >= 400) {
emit syncFailed(reply->errorString());
return;
}
auto data = reply->readAll();
if (data.isEmpty())
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, filename, data]() {
auto json = getUploadReply(reply);
if (json.isEmpty())
return;
auto json = QJsonDocument::fromJson(data);
auto mime = reply->request().header(QNetworkRequest::ContentTypeHeader).toString();
auto size =
reply->request().header(QNetworkRequest::ContentLengthHeader).toLongLong();
if (!json.isObject()) {
qDebug() << "Media upload: Response is not a json object.";
emit audioUploaded(
roomid, filename, json.value("content_uri").toString(), mime, size);
});
}
void
MatrixClient::uploadVideo(const QString &roomid,
const QString &filename,
const QSharedPointer<QIODevice> data)
{
auto reply = makeUploadRequest(data);
if (reply == nullptr)
return;
connect(reply, &QNetworkReply::finished, this, [this, reply, roomid, filename, data]() {
auto json = getUploadReply(reply);
if (json.isEmpty())
return;
}
QJsonObject object = json.object();
if (!object.contains("content_uri")) {
qDebug() << "Media upload: Missing content_uri key";
qDebug() << object;
return;
}
auto mime = reply->request().header(QNetworkRequest::ContentTypeHeader).toString();
auto size =
reply->request().header(QNetworkRequest::ContentLengthHeader).toLongLong();
emit audioUploaded(roomid, filename, object.value("content_uri").toString());
emit videoUploaded(
roomid, filename, json.value("content_uri").toString(), mime, size);
});
}
@ -1227,3 +1198,39 @@ MatrixClient::makeUploadRequest(QSharedPointer<QIODevice> iodev)
return reply;
}
QJsonObject
MatrixClient::getUploadReply(QNetworkReply *reply)
{
QJsonObject object;
reply->deleteLater();
int status = reply->attribute(QNetworkRequest::HttpStatusCodeAttribute).toInt();
if (status == 0 || status >= 400) {
emit syncFailed(reply->errorString());
return object;
}
auto res_data = reply->readAll();
if (res_data.isEmpty())
return object;
auto json = QJsonDocument::fromJson(res_data);
if (!json.isObject()) {
qDebug() << "Media upload: Response is not a json object.";
return object;
}
object = json.object();
if (!object.contains("content_uri")) {
qDebug() << "Media upload: Missing content_uri key";
qDebug() << object;
return QJsonObject{};
}
return object;
}

108
src/TextInputWidget.cc
View file

@ -58,9 +58,9 @@ FilteredTextEdit::FilteredTextEdit(QWidget *parent)
connect(typingTimer_, &QTimer::timeout, this, &FilteredTextEdit::stopTyping);
connect(&previewDialog_,
&dialogs::PreviewImageOverlay::confirmImageUpload,
&dialogs::PreviewUploadOverlay::confirmUpload,
this,
&FilteredTextEdit::receiveImage);
&FilteredTextEdit::uploadData);
previewDialog_.hide();
}
@ -135,28 +135,65 @@ FilteredTextEdit::canInsertFromMimeData(const QMimeData *source) const
void
FilteredTextEdit::insertFromMimeData(const QMimeData *source)
{
if (source->hasImage()) {
const auto formats = source->formats();
const auto idx = formats.indexOf(
QRegularExpression{"image/.+", QRegularExpression::CaseInsensitiveOption});
const auto formats = source->formats().filter("/");
const auto image = formats.filter("image/", Qt::CaseInsensitive);
const auto audio = formats.filter("audio/", Qt::CaseInsensitive);
const auto video = formats.filter("video/", Qt::CaseInsensitive);
// Note: in the future we may want to look into what the best choice is from the
// formats list. For now we will default to PNG format.
QString type = "png";
if (idx != -1) {
type = formats.at(idx).split('/')[1];
if (!image.empty()) {
showPreview(source, image);
} else if (!audio.empty()) {
showPreview(source, audio);
} else if (!video.empty()) {
showPreview(source, video);
} else if (source->hasUrls()) {
// Generic file path for any platform.
QString path;
for (auto &&u : source->urls()) {
if (u.isLocalFile()) {
path = u.toLocalFile();
break;
}
}
// Encode raw pixel data of image.
QByteArray data = source->data("image/" + type);
previewDialog_.setImageAndCreate(data, type);
previewDialog_.show();
} else if (source->hasFormat("x-special/gnome-copied-files") &&
QImageReader{source->text()}.canRead()) {
if (!path.isEmpty() && QFileInfo{path}.exists()) {
previewDialog_.setPreview(path);
} else {
qWarning()
<< "Clipboard does not contain any valid file paths:" << source->urls();
}
} else if (source->hasFormat("x-special/gnome-copied-files")) {
// Special case for X11 users. See "Notes for X11 Users" in source.
// Source: http://doc.qt.io/qt-5/qclipboard.html
previewDialog_.setImageAndCreate(source->text());
previewDialog_.show();
// This MIME type returns a string with multiple lines separated by '\n'. The first
// line is the command to perform with the clipboard (not useful to us). The
// following lines are the file URIs.
//
// Source: the nautilus source code in file 'src/nautilus-clipboard.c' in function
// nautilus_clipboard_get_uri_list_from_selection_data()
// https://github.com/GNOME/nautilus/blob/master/src/nautilus-clipboard.c
auto data = source->data("x-special/gnome-copied-files").split('\n');
if (data.size() < 2) {
qWarning() << "MIME format is malformed, cannot perform paste.";
return;
}
QString path;
for (int i = 1; i < data.size(); ++i) {
QUrl url{data[i]};
if (url.isLocalFile()) {
path = url.toLocalFile();
break;
}
}
if (!path.isEmpty()) {
previewDialog_.setPreview(path);
} else {
qWarning() << "Clipboard does not contain any valid file paths:" << data;
}
} else {
QTextEdit::insertFromMimeData(source);
}
@ -233,11 +270,30 @@ FilteredTextEdit::textChanged()
}
void
FilteredTextEdit::receiveImage(const QByteArray img, const QString &img_name)
FilteredTextEdit::uploadData(const QByteArray data, const QString &media, const QString &filename)
{
QSharedPointer<QBuffer> buffer{new QBuffer{this}};
buffer->setData(img);
emit image(buffer, img_name);
buffer->setData(data);
emit startedUpload();
if (media == "image")
emit image(buffer, filename);
else if (media == "audio")
emit audio(buffer, filename);
else if (media == "video")
emit video(buffer, filename);
else
emit file(buffer, filename);
}
void
FilteredTextEdit::showPreview(const QMimeData *source, const QStringList &formats)
{
// Retrieve data as MIME type.
auto const &mime = formats.first();
QByteArray data = source->data(mime);
previewDialog_.setPreview(data, mime);
}
TextInputWidget::TextInputWidget(QWidget *parent)
@ -309,6 +365,9 @@ TextInputWidget::TextInputWidget(QWidget *parent)
connect(input_, &FilteredTextEdit::message, this, &TextInputWidget::sendTextMessage);
connect(input_, &FilteredTextEdit::command, this, &TextInputWidget::command);
connect(input_, &FilteredTextEdit::image, this, &TextInputWidget::uploadImage);
connect(input_, &FilteredTextEdit::audio, this, &TextInputWidget::uploadAudio);
connect(input_, &FilteredTextEdit::video, this, &TextInputWidget::uploadVideo);
connect(input_, &FilteredTextEdit::file, this, &TextInputWidget::uploadFile);
connect(emojiBtn_,
SIGNAL(emojiSelected(const QString &)),
this,
@ -317,6 +376,9 @@ TextInputWidget::TextInputWidget(QWidget *parent)
connect(input_, &FilteredTextEdit::startedTyping, this, &TextInputWidget::startedTyping);
connect(input_, &FilteredTextEdit::stoppedTyping, this, &TextInputWidget::stoppedTyping);
connect(
input_, &FilteredTextEdit::startedUpload, this, &TextInputWidget::showUploadSpinner);
}
void
@ -376,6 +438,8 @@ TextInputWidget::openFileSelection()
emit uploadImage(file, fileName);
else if (format == "audio")
emit uploadAudio(file, fileName);
else if (format == "video")
emit uploadVideo(file, fileName);
else
emit uploadFile(file, fileName);

16
src/Utils.cc
View file

@ -133,3 +133,19 @@ utils::firstChar(const QString &input)
return QString::fromUcs4(&input.toUcs4().at(0), 1).toUpper();
}
QString
utils::humanReadableFileSize(const uint64_t bytes)
{
constexpr static const char *units[] = {"B", "KiB", "MiB", "GiB", "TiB"};
constexpr static const int length = sizeof(units) / sizeof(units[0]);
int u = 0;
double size = static_cast<double>(bytes);
while (size >= 1024.0 && u < length) {
++u;
size /= 1024.0;
}
return QString::number(size, 'g', 4) + ' ' + units[u];
}

142
src/dialogs/PreviewImageOverlay.cc
View file

@ -1,142 +0,0 @@
/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* This program 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.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
#include <QBuffer>
#include <QDebug>
#include <QFile>
#include <QFileInfo>
#include <QHBoxLayout>
#include <QVBoxLayout>
#include "Config.h"
#include "dialogs/PreviewImageOverlay.h"
using namespace dialogs;
static constexpr const char *DEFAULT = "Upload image?";
static constexpr const char *ERROR = "Failed to load image type '%1'. Continue upload?";
PreviewImageOverlay::PreviewImageOverlay(QWidget *parent)
: QWidget{parent}
, titleLabel_{tr(DEFAULT), this}
, imageLabel_{this}
, imageName_{tr("clipboard"), this}
, upload_{tr("Upload"), this}
, cancel_{tr("Cancel"), this}
{
auto hlayout = new QHBoxLayout;
hlayout->addWidget(&upload_);
hlayout->addWidget(&cancel_);
auto vlayout = new QVBoxLayout{this};
vlayout->addWidget(&titleLabel_);
vlayout->addWidget(&imageLabel_);
vlayout->addWidget(&imageName_);
vlayout->addLayout(hlayout);
connect(&upload_, &QPushButton::clicked, [&]() {
emit confirmImageUpload(imageData_, imageName_.text());
close();
});
connect(&cancel_, &QPushButton::clicked, [&]() { close(); });
}
void
PreviewImageOverlay::init()
{
auto window = QApplication::activeWindow();
auto winsize = window->frameGeometry().size();
auto center = window->frameGeometry().center();
auto img_size = image_.size();
imageName_.setText(QFileInfo{imagePath_}.fileName());
setAutoFillBackground(true);
setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint);
setWindowModality(Qt::WindowModal);
titleLabel_.setStyleSheet(
QString{"font-weight: bold; font-size: %1px;"}.arg(conf::headerFontSize));
titleLabel_.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
titleLabel_.setAlignment(Qt::AlignCenter);
imageLabel_.setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
imageLabel_.setAlignment(Qt::AlignCenter);
imageName_.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
imageName_.setAlignment(Qt::AlignCenter);
upload_.setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
cancel_.setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
upload_.setFontSize(conf::btn::fontSize);
cancel_.setFontSize(conf::btn::fontSize);
// Scale image preview to the size of the current window if it is larger.
if ((img_size.height() * img_size.width()) > (winsize.height() * winsize.width())) {
imageLabel_.setPixmap(image_.scaled(winsize, Qt::KeepAspectRatio));
} else {
imageLabel_.setPixmap(image_);
move(center.x() - (width() * 0.5), center.y() - (height() * 0.5));
}
imageLabel_.setScaledContents(false);
raise();
}
void
PreviewImageOverlay::setImageAndCreate(const QByteArray data, const QString &type)
{
imageData_ = data;
imagePath_ = "clipboard." + type;
auto loaded = image_.loadFromData(imageData_);
if (!loaded) {
titleLabel_.setText(QString{tr(ERROR)}.arg(type));
} else {
titleLabel_.setText(tr(DEFAULT));
}
init();
}
void
PreviewImageOverlay::setImageAndCreate(const QString &path)
{
QFile file{path};
imagePath_ = path;
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "Failed to open image from:" << path;
qWarning() << "Reason:" << file.errorString();
close();
return;
}
if ((imageData_ = file.readAll()).isEmpty()) {
qWarning() << "Failed to read image:" << file.errorString();
close();
return;
}
auto loaded = image_.loadFromData(imageData_);
if (!loaded) {
auto t = QFileInfo{path}.suffix();
titleLabel_.setText(QString{tr(ERROR)}.arg(t));
} else {
titleLabel_.setText(tr(DEFAULT));
}
init();
}

170
src/dialogs/PreviewUploadOverlay.cc Normal file
View file

@ -0,0 +1,170 @@
/*
* nheko Copyright (C) 2017 Konstantinos Sideris <siderisk@auth.gr>
*
* This program 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.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <QApplication>
#include <QBuffer>
#include <QDebug>
#include <QFile>
#include <QFileInfo>
#include <QHBoxLayout>
#include <QMimeDatabase>
#include <QVBoxLayout>
#include "Config.h"
#include "Utils.h"
#include "dialogs/PreviewUploadOverlay.h"
using namespace dialogs;
static constexpr const char *DEFAULT = "Upload %1?";
static constexpr const char *ERROR = "Failed to load image type '%1'. Continue upload?";
PreviewUploadOverlay::PreviewUploadOverlay(QWidget *parent)
: QWidget{parent}
, titleLabel_{this}
, fileName_{this}
, upload_{tr("Upload"), this}
, cancel_{tr("Cancel"), this}
{
auto hlayout = new QHBoxLayout;
hlayout->addWidget(&upload_);
hlayout->addWidget(&cancel_);
auto vlayout = new QVBoxLayout{this};
vlayout->addWidget(&titleLabel_);
vlayout->addWidget(&infoLabel_);
vlayout->addWidget(&fileName_);
vlayout->addLayout(hlayout);
connect(&upload_, &QPushButton::clicked, [&]() {
emit confirmUpload(data_, mediaType_, fileName_.text());
close();
});
connect(&cancel_, &QPushButton::clicked, this, &PreviewUploadOverlay::close);
}
void
PreviewUploadOverlay::init()
{
auto window = QApplication::activeWindow();
auto winsize = window->frameGeometry().size();
auto center = window->frameGeometry().center();
auto img_size = image_.size();
fileName_.setText(QFileInfo{filePath_}.fileName());
setAutoFillBackground(true);
setWindowFlags(Qt::Tool | Qt::WindowStaysOnTopHint);
setWindowModality(Qt::WindowModal);
titleLabel_.setStyleSheet(
QString{"font-weight: bold; font-size: %1px;"}.arg(conf::headerFontSize));
titleLabel_.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
titleLabel_.setAlignment(Qt::AlignCenter);
infoLabel_.setSizePolicy(QSizePolicy::Maximum, QSizePolicy::Maximum);
fileName_.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
fileName_.setAlignment(Qt::AlignCenter);
upload_.setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
cancel_.setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
upload_.setFontSize(conf::btn::fontSize);
cancel_.setFontSize(conf::btn::fontSize);
if (isImage_) {
infoLabel_.setAlignment(Qt::AlignCenter);
// Scale image preview to the size of the current window if it is larger.
if ((img_size.height() * img_size.width()) > (winsize.height() * winsize.width())) {
infoLabel_.setPixmap(image_.scaled(winsize, Qt::KeepAspectRatio));
} else {
infoLabel_.setPixmap(image_);
move(center.x() - (width() * 0.5), center.y() - (height() * 0.5));
}
} else {
infoLabel_.setAlignment(Qt::AlignLeft);
}
infoLabel_.setScaledContents(false);
show();
}
void
PreviewUploadOverlay::setLabels(const QString &type, const QString &mime, const int upload_size)
{
if (mediaType_ == "image") {
if (!image_.loadFromData(data_)) {
titleLabel_.setText(QString{tr(ERROR)}.arg(type));
} else {
titleLabel_.setText(QString{tr(DEFAULT)}.arg(mediaType_));
}
isImage_ = true;
} else {
auto const info = QString{tr("Media type: %1\n"
"Media size: %2\n")}
.arg(mime)
.arg(utils::humanReadableFileSize(upload_size));
titleLabel_.setText(QString{tr(DEFAULT)}.arg("file"));
infoLabel_.setText(info);
}
}
void
PreviewUploadOverlay::setPreview(const QByteArray data, const QString &mime)
{
auto const &split = mime.split('/');
auto const &type = split[1];
data_ = data;
mediaType_ = split[0];
filePath_ = "clipboard." + type;
isImage_ = false;
setLabels(type, mime, data_.size());
init();
}
void
PreviewUploadOverlay::setPreview(const QString &path)
{
QFile file{path};
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "Failed to open file from:" << path;
qWarning() << "Reason:" << file.errorString();
close();
return;
}
QMimeDatabase db;
auto mime = db.mimeTypeForFileNameAndData(path, &file);
if ((data_ = file.readAll()).isEmpty()) {
qWarning() << "Failed to read media:" << file.errorString();
close();
return;
}
auto const &split = mime.name().split('/');
mediaType_ = split[0];
filePath_ = file.fileName();
isImage_ = false;
setLabels(split[1], mime.name(), data_.size());
init();
}

7
src/timeline/TimelineView.cc
View file

@ -515,7 +515,7 @@ TimelineView::addUserMessage(mtx::events::MessageType ty, const QString &body)
lastSender_ = local_user_;
int txn_id = client_->incrementTransactionId();
PendingMessage message(ty, txn_id, body, "", "", view_item);
PendingMessage message(ty, txn_id, body, "", "", -1, "", view_item);
handleNewUserMessage(message);
}
@ -537,13 +537,14 @@ TimelineView::sendNextPendingMessage()
switch (m.ty) {
case mtx::events::MessageType::Audio:
case mtx::events::MessageType::Image:
case mtx::events::MessageType::Video:
case mtx::events::MessageType::File:
// FIXME: Improve the API
client_->sendRoomMessage(
m.ty, m.txn_id, room_id_, m.filename, QFileInfo(m.filename), m.body);
m.ty, m.txn_id, room_id_, m.filename, m.mime, m.media_size, m.body);
break;
default:
client_->sendRoomMessage(m.ty, m.txn_id, room_id_, m.body, QFileInfo());
client_->sendRoomMessage(m.ty, m.txn_id, room_id_, m.body, m.mime, m.media_size);
break;
}
}

37
src/timeline/TimelineViewManager.cc
View file

@ -29,6 +29,7 @@
#include "timeline/widgets/AudioItem.h"
#include "timeline/widgets/FileItem.h"
#include "timeline/widgets/ImageItem.h"
#include "timeline/widgets/VideoItem.h"
TimelineViewManager::TimelineViewManager(QSharedPointer<MatrixClient> client, QWidget *parent)
: QStackedWidget(parent)
@ -89,9 +90,10 @@ TimelineViewManager::queueEmoteMessage(const QString &msg)
void
TimelineViewManager::queueImageMessage(const QString &roomid,
const QSharedPointer<QIODevice> data,
const QString &filename,
const QString &url)
const QString &url,
const QString &mime,
const int64_t size)
{
if (!timelineViewExists(roomid)) {
qDebug() << "Cannot send m.image message to a non-managed view";
@ -100,13 +102,15 @@ TimelineViewManager::queueImageMessage(const QString &roomid,
auto view = views_[roomid];
view->addUserMessage<ImageItem, mtx::events::MessageType::Image>(url, filename, data);
view->addUserMessage<ImageItem, mtx::events::MessageType::Image>(url, filename, mime, size);
}
void
TimelineViewManager::queueFileMessage(const QString &roomid,
const QString &filename,
const QString &url)
const QString &url,
const QString &mime,
const int64_t size)
{
if (!timelineViewExists(roomid)) {
qDebug() << "Cannot send m.file message to a non-managed view";
@ -115,13 +119,15 @@ TimelineViewManager::queueFileMessage(const QString &roomid,
auto view = views_[roomid];
view->addUserMessage<FileItem, mtx::events::MessageType::File>(url, filename);
view->addUserMessage<FileItem, mtx::events::MessageType::File>(url, filename, mime, size);
}
void
TimelineViewManager::queueAudioMessage(const QString &roomid,
const QString &filename,
const QString &url)
const QString &url,
const QString &mime,
const int64_t size)
{
if (!timelineViewExists(roomid)) {
qDebug() << "Cannot send m.audio message to a non-managed view";
@ -130,7 +136,24 @@ TimelineViewManager::queueAudioMessage(const QString &roomid,
auto view = views_[roomid];
view->addUserMessage<AudioItem, mtx::events::MessageType::Audio>(url, filename);
view->addUserMessage<AudioItem, mtx::events::MessageType::Audio>(url, filename, mime, size);
}
void
TimelineViewManager::queueVideoMessage(const QString &roomid,
const QString &filename,
const QString &url,
const QString &mime,
const int64_t size)
{
if (!timelineViewExists(roomid)) {
qDebug() << "Cannot send m.video message to a non-managed view";
return;
}
auto view = views_[roomid];
view->addUserMessage<VideoItem, mtx::events::MessageType::Video>(url, filename, mime, size);
}
void

27
src/timeline/widgets/AudioItem.cc
View file

@ -20,10 +20,11 @@
#include <QDesktopServices>
#include <QFile>
#include <QFileDialog>
#include <QFileInfo>
#include <QPainter>
#include <QPixmap>
#include "Utils.h"
#include "timeline/widgets/AudioItem.h"
constexpr int MaxWidth = 400;
@ -82,42 +83,26 @@ AudioItem::AudioItem(QSharedPointer<MatrixClient> client,
, event_{event}
, client_{client}
{
readableFileSize_ = calculateFileSize(event.content.info.size);
readableFileSize_ = utils::humanReadableFileSize(event.content.info.size);
init();
}
AudioItem::AudioItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent)
: QWidget(parent)
, url_{url}
, text_{QFileInfo{filename}.fileName()}
, text_{filename}
, client_{client}
{
Q_UNUSED(data);
readableFileSize_ = calculateFileSize(QFileInfo{filename}.size());
readableFileSize_ = utils::humanReadableFileSize(size);
init();
}
QString
AudioItem::calculateFileSize(int nbytes) const
{
if (nbytes == 0)
return QString("");
if (nbytes < 1024)
return QString("%1 B").arg(nbytes);
if (nbytes < 1024 * 1024)
return QString("%1 KB").arg(nbytes / 1024);
return QString("%1 MB").arg(nbytes / 1024 / 1024);
}
QSize
AudioItem::sizeHint() const
{

27
src/timeline/widgets/FileItem.cc
View file

@ -20,10 +20,11 @@
#include <QDesktopServices>
#include <QFile>
#include <QFileDialog>
#include <QFileInfo>
#include <QPainter>
#include <QPixmap>
#include "Utils.h"
#include "timeline/widgets/FileItem.h"
constexpr int MaxWidth = 400;
@ -69,42 +70,26 @@ FileItem::FileItem(QSharedPointer<MatrixClient> client,
, event_{event}
, client_{client}
{
readableFileSize_ = calculateFileSize(event.content.info.size);
readableFileSize_ = utils::humanReadableFileSize(event.content.info.size);
init();
}
FileItem::FileItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent)
: QWidget(parent)
, url_{url}
, text_{QFileInfo{filename}.fileName()}
, text_{filename}
, client_{client}
{
Q_UNUSED(data);
readableFileSize_ = calculateFileSize(QFileInfo{filename}.size());
readableFileSize_ = utils::humanReadableFileSize(size);
init();
}
QString
FileItem::calculateFileSize(int nbytes) const
{
if (nbytes == 0)
return QString("");
if (nbytes < 1024)
return QString("%1 B").arg(nbytes);
if (nbytes < 1024 * 1024)
return QString("%1 KB").arg(nbytes / 1024);
return QString("%1 MB").arg(nbytes / 1024 / 1024);
}
void
FileItem::openUrl()
{

21
src/timeline/widgets/ImageItem.cc
View file

@ -61,14 +61,16 @@ ImageItem::ImageItem(QSharedPointer<MatrixClient> client,
ImageItem::ImageItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent)
: QWidget(parent)
, url_{url}
, text_{filename}
, client_{client}
{
Q_UNUSED(size);
setMouseTracking(true);
setCursor(Qt::PointingHandCursor);
setAttribute(Qt::WA_Hover, true);
@ -84,19 +86,12 @@ ImageItem::ImageItem(QSharedPointer<MatrixClient> client,
url_ = QString("%1/_matrix/media/r0/download/%2")
.arg(client_.data()->getHomeServer().toString(), media_params);
if (data.isNull()) {
qWarning() << "No image data to display";
return;
}
client_.data()->downloadImage(QString::fromStdString(event_.event_id), url_);
if (data->reset()) {
QPixmap p;
p.loadFromData(data->readAll());
setImage(p);
} else {
qWarning() << "Failed to seek to beginning of device:" << data->errorString();
return;
}
connect(client_.data(),
SIGNAL(imageDownloaded(const QString &, const QPixmap &)),
this,
SLOT(imageDownloaded(const QString &, const QPixmap &)));
}
void

25
src/timeline/widgets/VideoItem.cc
View file

@ -20,6 +20,7 @@
#include <QVBoxLayout>
#include "Config.h"
#include "Utils.h"
#include "timeline/widgets/VideoItem.h"
void
@ -45,7 +46,7 @@ VideoItem::VideoItem(QSharedPointer<MatrixClient> client,
, event_{event}
, client_{client}
{
readableFileSize_ = calculateFileSize(event.content.info.size);
readableFileSize_ = utils::humanReadableFileSize(event.content.info.size);
init();
@ -66,31 +67,15 @@ VideoItem::VideoItem(QSharedPointer<MatrixClient> client,
VideoItem::VideoItem(QSharedPointer<MatrixClient> client,
const QString &url,
const QSharedPointer<QIODevice> data,
const QString &filename,
const int64_t size,
QWidget *parent)
: QWidget(parent)
, url_{url}
, text_{QFileInfo(filename).fileName()}
, text_{filename}
, client_{client}
{
Q_UNUSED(data);
readableFileSize_ = calculateFileSize(QFileInfo(filename).size());
readableFileSize_ = utils::humanReadableFileSize(size);
init();
}
QString
VideoItem::calculateFileSize(int nbytes) const
{
if (nbytes == 0)
return QString("");
if (nbytes < 1024)
return QString("%1 B").arg(nbytes);
if (nbytes < 1024 * 1024)
return QString("%1 KB").arg(nbytes / 1024);
return QString("%1 MB").arg(nbytes / 1024 / 1024);
}