matrixion/src/TextInputWidget.cpp

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2017-04-06 02:06:42 +03:00
/*
* 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 <QAbstractTextDocumentLayout>
#include <QBuffer>
#include <QClipboard>
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#include <QFileDialog>
#include <QMimeData>
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#include <QMimeDatabase>
#include <QMimeType>
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#include <QPainter>
#include <QStyleOption>
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#include <QtConcurrent>
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#include "Cache.h"
#include "ChatPage.h"
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#include "Logging.h"
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#include "TextInputWidget.h"
#include "Utils.h"
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#include "ui/FlatButton.h"
#include "ui/LoadingIndicator.h"
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#if defined(Q_OS_MAC)
#include "emoji/MacHelper.h"
#endif
static constexpr size_t INPUT_HISTORY_SIZE = 127;
static constexpr int MAX_TEXTINPUT_HEIGHT = 120;
static constexpr int ButtonHeight = 22;
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FilteredTextEdit::FilteredTextEdit(QWidget *parent)
: QTextEdit{parent}
, history_index_{0}
, suggestionsPopup_{parent}
, replyPopup_{parent}
, previewDialog_{parent}
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{
setFrameStyle(QFrame::NoFrame);
connect(document()->documentLayout(),
&QAbstractTextDocumentLayout::documentSizeChanged,
this,
&FilteredTextEdit::updateGeometry);
connect(document()->documentLayout(),
&QAbstractTextDocumentLayout::documentSizeChanged,
this,
[this]() { emit heightChanged(document()->size().toSize().height()); });
working_history_.push_back("");
connect(this, &QTextEdit::textChanged, this, &FilteredTextEdit::textChanged);
setAcceptRichText(false);
typingTimer_ = new QTimer(this);
typingTimer_->setInterval(1000);
typingTimer_->setSingleShot(true);
connect(typingTimer_, &QTimer::timeout, this, &FilteredTextEdit::stopTyping);
connect(&previewDialog_,
&dialogs::PreviewUploadOverlay::confirmUpload,
this,
&FilteredTextEdit::uploadData);
connect(this, &FilteredTextEdit::resultsRetrieved, this, &FilteredTextEdit::showResults);
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connect(&replyPopup_, &ReplyPopup::userSelected, this, [](const QString &text) {
// TODO: Show user avatar window.
nhlog::ui()->info("User selected: " + text.toStdString());
});
connect(
&suggestionsPopup_, &SuggestionsPopup::itemSelected, this, [this](const QString &text) {
suggestionsPopup_.hide();
auto cursor = textCursor();
const int end = cursor.position();
cursor.setPosition(atTriggerPosition_, QTextCursor::MoveAnchor);
cursor.setPosition(end, QTextCursor::KeepAnchor);
cursor.removeSelectedText();
cursor.insertText(text);
});
connect(&replyPopup_, &ReplyPopup::cancel, this, [this]() { closeReply(); });
// For cycling through the suggestions by hitting tab.
connect(this,
&FilteredTextEdit::selectNextSuggestion,
&suggestionsPopup_,
&SuggestionsPopup::selectNextSuggestion);
connect(this,
&FilteredTextEdit::selectPreviousSuggestion,
&suggestionsPopup_,
&SuggestionsPopup::selectPreviousSuggestion);
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connect(this, &FilteredTextEdit::selectHoveredSuggestion, this, [this]() {
suggestionsPopup_.selectHoveredSuggestion<UserItem>();
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});
previewDialog_.hide();
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}
void
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FilteredTextEdit::showResults(const std::vector<SearchResult> &results)
{
QPoint pos;
if (isAnchorValid()) {
auto cursor = textCursor();
cursor.setPosition(atTriggerPosition_);
pos = viewport()->mapToGlobal(cursorRect(cursor).topLeft());
} else {
auto rect = cursorRect();
pos = viewport()->mapToGlobal(rect.topLeft());
}
suggestionsPopup_.addUsers(results);
suggestionsPopup_.move(pos.x(), pos.y() - suggestionsPopup_.height() - 10);
suggestionsPopup_.show();
}
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void
FilteredTextEdit::keyPressEvent(QKeyEvent *event)
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{
const bool isModifier = (event->modifiers() != Qt::NoModifier);
#if defined(Q_OS_MAC)
if (event->modifiers() == (Qt::ControlModifier | Qt::MetaModifier) &&
event->key() == Qt::Key_Space)
MacHelper::showEmojiWindow();
#endif
if (!isModifier) {
if (!typingTimer_->isActive())
emit startedTyping();
typingTimer_->start();
}
// calculate the new query
if (textCursor().position() < atTriggerPosition_ || !isAnchorValid()) {
resetAnchor();
closeSuggestions();
}
if (suggestionsPopup_.isVisible()) {
switch (event->key()) {
case Qt::Key_Down:
case Qt::Key_Tab:
emit selectNextSuggestion();
return;
case Qt::Key_Enter:
case Qt::Key_Return:
emit selectHoveredSuggestion();
return;
case Qt::Key_Escape:
closeSuggestions();
return;
case Qt::Key_Up:
case Qt::Key_Backtab: {
emit selectPreviousSuggestion();
return;
}
default:
break;
}
}
if (replyPopup_.isVisible()) {
switch (event->key()) {
case Qt::Key_Escape:
closeReply();
return;
default:
break;
}
}
switch (event->key()) {
case Qt::Key_At:
atTriggerPosition_ = textCursor().position();
anchorType_ = AnchorType::Sigil;
QTextEdit::keyPressEvent(event);
break;
case Qt::Key_Tab: {
auto cursor = textCursor();
const int initialPos = cursor.position();
cursor.movePosition(QTextCursor::StartOfWord, QTextCursor::KeepAnchor);
auto word = cursor.selectedText();
const int startOfWord = cursor.position();
// There is a word to complete.
if (initialPos != startOfWord) {
atTriggerPosition_ = startOfWord;
anchorType_ = AnchorType::Tab;
emit showSuggestions(word);
} else {
QTextEdit::keyPressEvent(event);
}
break;
}
case Qt::Key_Return:
case Qt::Key_Enter:
if (!(event->modifiers() & Qt::ShiftModifier)) {
stopTyping();
submit();
closeReply();
} else {
QTextEdit::keyPressEvent(event);
}
break;
case Qt::Key_Up: {
auto initial_cursor = textCursor();
QTextEdit::keyPressEvent(event);
if (textCursor() == initial_cursor && textCursor().atStart() &&
history_index_ + 1 < working_history_.size()) {
++history_index_;
setPlainText(working_history_[history_index_]);
moveCursor(QTextCursor::End);
} else if (textCursor() == initial_cursor) {
// Move to the start of the text if there aren't any lines to move up to.
initial_cursor.movePosition(QTextCursor::Start, QTextCursor::MoveAnchor, 1);
setTextCursor(initial_cursor);
}
break;
}
case Qt::Key_Down: {
auto initial_cursor = textCursor();
QTextEdit::keyPressEvent(event);
if (textCursor() == initial_cursor && textCursor().atEnd() && history_index_ > 0) {
--history_index_;
setPlainText(working_history_[history_index_]);
moveCursor(QTextCursor::End);
} else if (textCursor() == initial_cursor) {
// Move to the end of the text if there aren't any lines to move down to.
initial_cursor.movePosition(QTextCursor::End, QTextCursor::MoveAnchor, 1);
setTextCursor(initial_cursor);
}
break;
}
default:
QTextEdit::keyPressEvent(event);
if (isModifier)
return;
if (textCursor().position() == 0) {
resetAnchor();
closeSuggestions();
return;
}
// Check if the current word should be autocompleted.
auto cursor = textCursor();
cursor.movePosition(QTextCursor::StartOfWord, QTextCursor::KeepAnchor);
auto word = cursor.selectedText();
if (hasAnchor(cursor.position(), anchorType_) && isAnchorValid()) {
if (word.isEmpty()) {
closeSuggestions();
return;
}
emit showSuggestions(word);
} else {
resetAnchor();
closeSuggestions();
}
break;
}
}
bool
FilteredTextEdit::canInsertFromMimeData(const QMimeData *source) const
{
return (source->hasImage() || QTextEdit::canInsertFromMimeData(source));
}
void
FilteredTextEdit::insertFromMimeData(const QMimeData *source)
{
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);
if (source->hasImage()) {
QImage img = qvariant_cast<QImage>(source->imageData());
previewDialog_.setPreview(img, image.front());
} 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;
}
}
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
// 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);
}
}
void
FilteredTextEdit::stopTyping()
{
typingTimer_->stop();
emit stoppedTyping();
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}
QSize
FilteredTextEdit::sizeHint() const
{
ensurePolished();
auto margins = viewportMargins();
margins += document()->documentMargin();
QSize size = document()->size().toSize();
size.rwidth() += margins.left() + margins.right();
size.rheight() += margins.top() + margins.bottom();
return size;
}
QSize
FilteredTextEdit::minimumSizeHint() const
{
ensurePolished();
auto margins = viewportMargins();
margins += document()->documentMargin();
margins += contentsMargins();
QSize size(fontMetrics().averageCharWidth() * 10,
fontMetrics().lineSpacing() + margins.top() + margins.bottom());
return size;
}
void
FilteredTextEdit::submit()
{
if (toPlainText().trimmed().isEmpty())
return;
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if (true_history_.size() == INPUT_HISTORY_SIZE)
true_history_.pop_back();
true_history_.push_front(toPlainText());
working_history_ = true_history_;
working_history_.push_front("");
history_index_ = 0;
QString text = toPlainText();
if (text.startsWith('/')) {
int command_end = text.indexOf(' ');
if (command_end == -1)
command_end = text.size();
auto name = text.mid(1, command_end - 1);
auto args = text.mid(command_end + 1);
if (name.isEmpty() || name == "/") {
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message(args, related);
} else {
command(name, args);
}
} else {
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message(std::move(text), std::move(related));
}
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related = {};
clear();
}
void
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FilteredTextEdit::showReplyPopup(const RelatedInfo &related_)
{
QPoint pos = viewport()->mapToGlobal(this->pos());
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replyPopup_.setReplyContent(related_);
replyPopup_.move(pos.x(), pos.y() - replyPopup_.height() - 10);
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replyPopup_.setFixedWidth(this->parentWidget()->width());
replyPopup_.show();
}
void
FilteredTextEdit::textChanged()
{
working_history_[history_index_] = toPlainText();
}
void
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FilteredTextEdit::uploadData(const QByteArray data,
const QString &mediaType,
const QString &filename)
{
QSharedPointer<QBuffer> buffer{new QBuffer{this}};
buffer->setData(data);
emit startedUpload();
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emit media(buffer, mediaType, filename, related);
related = {};
closeReply();
}
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);
}
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TextInputWidget::TextInputWidget(QWidget *parent)
: QWidget(parent)
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{
QFont f;
f.setPointSizeF(f.pointSizeF());
const int fontHeight = QFontMetrics(f).height();
const int contentHeight = static_cast<int>(fontHeight * 2.5);
const int InputHeight = static_cast<int>(fontHeight * 1.5);
setFixedHeight(contentHeight);
setCursor(Qt::ArrowCursor);
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topLayout_ = new QHBoxLayout();
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topLayout_->setSpacing(0);
topLayout_->setContentsMargins(13, 1, 13, 0);
QIcon send_file_icon;
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send_file_icon.addFile(":/icons/icons/ui/paper-clip-outline.png");
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sendFileBtn_ = new FlatButton(this);
sendFileBtn_->setToolTip(tr("Send a file"));
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sendFileBtn_->setIcon(send_file_icon);
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sendFileBtn_->setIconSize(QSize(ButtonHeight, ButtonHeight));
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spinner_ = new LoadingIndicator(this);
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spinner_->setFixedHeight(InputHeight);
spinner_->setFixedWidth(InputHeight);
spinner_->setObjectName("FileUploadSpinner");
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spinner_->hide();
input_ = new FilteredTextEdit(this);
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input_->setFixedHeight(InputHeight);
input_->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
input_->setPlaceholderText(tr("Write a message..."));
connect(input_,
&FilteredTextEdit::heightChanged,
this,
[this, InputHeight, contentHeight](int height) {
int widgetHeight =
std::min(MAX_TEXTINPUT_HEIGHT, std::max(height, contentHeight));
int textInputHeight =
std::min(widgetHeight - 1, std::max(height, InputHeight));
setFixedHeight(widgetHeight);
input_->setFixedHeight(textInputHeight);
emit heightChanged(widgetHeight);
});
connect(input_, &FilteredTextEdit::showSuggestions, this, [this](const QString &q) {
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if (q.isEmpty())
return;
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QtConcurrent::run([this, q = q.toLower().toStdString()]() {
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try {
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emit input_->resultsRetrieved(cache::searchUsers(
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ChatPage::instance()->currentRoom().toStdString(), q));
} catch (const lmdb::error &e) {
nhlog::db()->error("Suggestion retrieval failed: {}", e.what());
}
});
});
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sendMessageBtn_ = new FlatButton(this);
sendMessageBtn_->setToolTip(tr("Send a message"));
QIcon send_message_icon;
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send_message_icon.addFile(":/icons/icons/ui/cursor.png");
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sendMessageBtn_->setIcon(send_message_icon);
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sendMessageBtn_->setIconSize(QSize(ButtonHeight, ButtonHeight));
emojiBtn_ = new emoji::PickButton(this);
emojiBtn_->setToolTip(tr("Emoji"));
#if defined(Q_OS_MAC)
// macOS has a native emoji picker.
emojiBtn_->hide();
#endif
QIcon emoji_icon;
emoji_icon.addFile(":/icons/icons/ui/smile.png");
emojiBtn_->setIcon(emoji_icon);
emojiBtn_->setIconSize(QSize(ButtonHeight, ButtonHeight));
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topLayout_->addWidget(sendFileBtn_);
topLayout_->addWidget(input_);
topLayout_->addWidget(emojiBtn_);
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topLayout_->addWidget(sendMessageBtn_);
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setLayout(topLayout_);
connect(sendMessageBtn_, &FlatButton::clicked, input_, &FilteredTextEdit::submit);
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connect(sendFileBtn_, SIGNAL(clicked()), this, SLOT(openFileSelection()));
connect(input_, &FilteredTextEdit::message, this, &TextInputWidget::sendTextMessage);
connect(input_, &FilteredTextEdit::command, this, &TextInputWidget::command);
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connect(input_, &FilteredTextEdit::media, this, &TextInputWidget::uploadMedia);
connect(emojiBtn_,
SIGNAL(emojiSelected(const QString &)),
this,
SLOT(addSelectedEmoji(const QString &)));
connect(input_, &FilteredTextEdit::startedTyping, this, &TextInputWidget::startedTyping);
connect(input_, &FilteredTextEdit::stoppedTyping, this, &TextInputWidget::stoppedTyping);
connect(
input_, &FilteredTextEdit::startedUpload, this, &TextInputWidget::showUploadSpinner);
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}
void
TextInputWidget::addSelectedEmoji(const QString &emoji)
{
QTextCursor cursor = input_->textCursor();
QTextCharFormat charfmt;
input_->setCurrentCharFormat(charfmt);
input_->insertPlainText(emoji);
cursor.movePosition(QTextCursor::End);
input_->setCurrentCharFormat(charfmt);
input_->show();
}
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void
TextInputWidget::command(QString command, QString args)
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{
if (command == "me") {
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sendEmoteMessage(args, input_->related);
} else if (command == "join") {
sendJoinRoomRequest(args);
} else if (command == "invite") {
sendInviteRoomRequest(args.section(' ', 0, 0), args.section(' ', 1, -1));
} else if (command == "kick") {
sendKickRoomRequest(args.section(' ', 0, 0), args.section(' ', 1, -1));
} else if (command == "ban") {
sendBanRoomRequest(args.section(' ', 0, 0), args.section(' ', 1, -1));
} else if (command == "unban") {
sendUnbanRoomRequest(args.section(' ', 0, 0), args.section(' ', 1, -1));
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} else if (command == "shrug") {
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sendTextMessage("¯\\_(ツ)_/¯", input_->related);
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} else if (command == "fliptable") {
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sendTextMessage("(╯°□°)╯︵ ┻━┻", input_->related);
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} else if (command == "unfliptable") {
sendTextMessage(" ┯━┯╭( º _ º╭)", input_->related);
} else if (command == "sovietflip") {
sendTextMessage("ノ┬─┬ノ ︵ ( \\o°o)\\", input_->related);
}
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input_->related = std::nullopt;
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}
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void
TextInputWidget::openFileSelection()
{
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const auto fileName =
QFileDialog::getOpenFileName(this, tr("Select a file"), "", tr("All Files (*)"));
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if (fileName.isEmpty())
return;
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QMimeDatabase db;
QMimeType mime = db.mimeTypeForFile(fileName, QMimeDatabase::MatchContent);
const auto format = mime.name().split("/")[0];
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QSharedPointer<QFile> file{new QFile{fileName, this}};
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emit uploadMedia(file, format, QFileInfo(fileName).fileName(), input_->related);
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input_->related = {};
input_->closeReply();
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showUploadSpinner();
}
void
TextInputWidget::showUploadSpinner()
{
topLayout_->removeWidget(sendFileBtn_);
sendFileBtn_->hide();
topLayout_->insertWidget(0, spinner_);
spinner_->start();
}
void
TextInputWidget::hideUploadSpinner()
{
topLayout_->removeWidget(spinner_);
topLayout_->insertWidget(0, sendFileBtn_);
sendFileBtn_->show();
spinner_->stop();
}
void
TextInputWidget::stopTyping()
{
input_->stopTyping();
}
void
TextInputWidget::focusInEvent(QFocusEvent *event)
{
input_->setFocus(event->reason());
}
void
TextInputWidget::paintEvent(QPaintEvent *)
{
QStyleOption opt;
opt.init(this);
QPainter p(this);
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style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}
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void
TextInputWidget::addReply(const RelatedInfo &related)
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{
// input_->setText(QString("> %1: %2\n\n").arg(username).arg(msg));
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input_->setFocus();
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// input_->showReplyPopup(related);
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auto cursor = input_->textCursor();
cursor.movePosition(QTextCursor::End);
input_->setTextCursor(cursor);
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input_->related = related;
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}