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add emoji completer to text input

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This commit is contained in:
Jussi Kuokkanen 2020-08-28 23:32:23 +03:00
parent 3fece53eb7
commit a173d964f7
5 changed files with 182 additions and 3 deletions
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106
src/TextInputWidget.cpp
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@ -18,6 +18,7 @@
#include <QAbstractTextDocumentLayout>
#include <QBuffer>
#include <QClipboard>
#include <QCompleter>
#include <QFileDialog>
#include <QMimeData>
#include <QMimeDatabase>
@ -25,12 +26,18 @@
#include <QPainter>
#include <QStyleOption>
#include <QtConcurrent>
#include <qnamespace.h>
#include <qregexp.h>
#include "Cache.h"
#include "ChatPage.h"
#include "CompletionModel.h"
#include "Logging.h"
#include "TextInputWidget.h"
#include "Utils.h"
#include "emoji/EmojiSearchModel.h"
#include "emoji/KeyboardSelector.h"
#include "emoji/Provider.h"
#include "ui/FlatButton.h"
#include "ui/LoadingIndicator.h"
@ -61,6 +68,23 @@ FilteredTextEdit::FilteredTextEdit(QWidget *parent)
connect(this, &QTextEdit::textChanged, this, &FilteredTextEdit::textChanged);
setAcceptRichText(false);
completer_ = new QCompleter(this);
completer_->setWidget(this);
auto model = new emoji::EmojiSearchModel(this);
model->sort(0, Qt::AscendingOrder);
completer_->setModel((emoji_completion_model_ = new CompletionModel(model, this)));
completer_->setModelSorting(QCompleter::UnsortedModel);
completer_->popup()->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
completer_->popup()->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
connect(completer_, QOverload<const QModelIndex&>::of(&QCompleter::activated),
[this](auto &index) {
emoji_popup_open_ = false;
auto emoji = index.data(emoji::EmojiModel::Unicode).toString();
insertCompletion(emoji);
});
typingTimer_ = new QTimer(this);
typingTimer_->setInterval(1000);
typingTimer_->setSingleShot(true);
@ -101,6 +125,17 @@ FilteredTextEdit::FilteredTextEdit(QWidget *parent)
previewDialog_.hide();
}
void
FilteredTextEdit::insertCompletion(QString completion) {
// Paint the current word and replace it with 'completion'
auto cur_word = wordUnderCursor();
auto tc = textCursor();
tc.movePosition(QTextCursor::Left, QTextCursor::MoveAnchor, cur_word.length());
tc.movePosition(QTextCursor::Right, QTextCursor::KeepAnchor, cur_word.length());
tc.insertText(completion);
setTextCursor(tc);
}
void
FilteredTextEdit::showResults(const std::vector<SearchResult> &results)
{
@ -123,7 +158,7 @@ FilteredTextEdit::showResults(const std::vector<SearchResult> &results)
void
FilteredTextEdit::keyPressEvent(QKeyEvent *event)
{
const bool isModifier = (event->modifiers() != Qt::NoModifier);
const bool isModifier = (event->modifiers() != Qt::NoModifier);
#if defined(Q_OS_MAC)
if (event->modifiers() == (Qt::ControlModifier | Qt::MetaModifier) &&
@ -167,6 +202,21 @@ FilteredTextEdit::keyPressEvent(QKeyEvent *event)
}
}
if (emoji_popup_open_) {
auto fake_key = (event->key() == Qt::Key_Backtab) ? Qt::Key_Up : Qt::Key_Down;
switch (event->key()) {
case Qt::Key_Backtab:
case Qt::Key_Tab: {
// Simulate up/down arrow press
auto ev = new QKeyEvent(QEvent::KeyPress, fake_key, Qt::NoModifier);
QCoreApplication::postEvent(completer_->popup(), ev);
return;
}
default:
break;
}
}
switch (event->key()) {
case Qt::Key_At:
atTriggerPosition_ = textCursor().position();
@ -195,8 +245,22 @@ FilteredTextEdit::keyPressEvent(QKeyEvent *event)
break;
}
case Qt::Key_Colon: {
QTextEdit::keyPressEvent(event);
emoji_popup_open_ = true;
emoji_completion_model_->setFilterRegExp(wordUnderCursor());
//completer_->setCompletionPrefix(wordUnderCursor());
completer_->popup()->setCurrentIndex(completer_->completionModel()->index(0, 0));
completer_->complete(completerRect());
break;
}
case Qt::Key_Return:
case Qt::Key_Enter:
if (emoji_popup_open_) {
event->ignore();
return;
}
if (!(event->modifiers() & Qt::ShiftModifier)) {
stopTyping();
submit();
@ -241,7 +305,24 @@ FilteredTextEdit::keyPressEvent(QKeyEvent *event)
QTextEdit::keyPressEvent(event);
if (isModifier)
return;
return;
if (emoji_popup_open_) {
// Update completion
emoji_completion_model_->setFilterRegExp(wordUnderCursor());
//completer_->setCompletionPrefix(wordUnderCursor());
completer_->popup()->setCurrentIndex(completer_->completionModel()->index(0, 0));
completer_->complete(completerRect());
}
if (emoji_popup_open_ && (completer_->completionCount() < 1 ||
!wordUnderCursor().contains(QRegExp(":[^\r\n\t\f\v :]+$")))) {
// No completions for this word or another word than the completer was started with
emoji_popup_open_ = false;
completer_->popup()->hide();
}
if (textCursor().position() == 0) {
resetAnchor();
@ -352,6 +433,27 @@ FilteredTextEdit::stopTyping()
emit stoppedTyping();
}
QRect
FilteredTextEdit::completerRect()
{
// Move left edge to the beginning of the word
auto cursor = textCursor();
auto rect = cursorRect();
cursor.movePosition(QTextCursor::Left, QTextCursor::MoveAnchor, wordUnderCursor().length());
auto cursor_global_x = viewport()->mapToGlobal(cursorRect(cursor).topLeft()).x();
auto rect_global_left = viewport()->mapToGlobal(rect.bottomLeft()).x();
auto dx = qAbs(rect_global_left - cursor_global_x);
rect.moveLeft(rect.left() - dx);
auto item_height = completer_->popup()->sizeHintForRow(0);
auto max_height = item_height * completer_->maxVisibleItems();
auto height = (completer_->completionCount() > completer_->maxVisibleItems()) ? max_height :
completer_->completionCount() * item_height;
rect.setWidth(completer_->popup()->sizeHintForColumn(0));
rect.moveBottom(-height);
return rect;
}
QSize
FilteredTextEdit::sizeHint() const
{