23rd
133 linhas
3.4 KiB
C++
133 linhas
3.4 KiB
C++
/*
|
|
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 "editor/scene/scene_emoji_document.h"
|
|
|
|
#include "ui/emoji_config.h"
|
|
#include "ui/painter.h"
|
|
|
|
#include <QTextBlock>
|
|
#include <QTextCursor>
|
|
|
|
namespace Editor {
|
|
|
|
EmojiDocument::EmojiDocument(QObject *parent)
|
|
: QTextDocument(parent) {
|
|
}
|
|
|
|
QVariant EmojiDocument::loadResource(int type, const QUrl &name) {
|
|
if (type != QTextDocument::ImageResource
|
|
|| name.scheme() != u"emoji"_q) {
|
|
return QTextDocument::loadResource(type, name);
|
|
}
|
|
const auto i = _cache.find(name);
|
|
if (i != _cache.end()) {
|
|
return i->second;
|
|
}
|
|
auto result = QVariant();
|
|
if (const auto emoji = Ui::Emoji::FromUrl(name.toDisplayString())) {
|
|
const auto factor = style::DevicePixelRatio();
|
|
const auto logical = QFontMetrics(defaultFont()).height();
|
|
const auto source = Ui::Emoji::GetSizeLarge();
|
|
auto image = QImage(
|
|
QSize(logical, logical) * factor,
|
|
QImage::Format_ARGB32_Premultiplied);
|
|
image.setDevicePixelRatio(factor);
|
|
image.fill(Qt::transparent);
|
|
{
|
|
auto p = QPainter(&image);
|
|
auto hq = PainterHighQualityEnabler(p);
|
|
const auto sourceLogical = source / float64(factor);
|
|
const auto scale = logical / sourceLogical;
|
|
p.scale(scale, scale);
|
|
Ui::Emoji::Draw(p, emoji, source, 0, 0);
|
|
}
|
|
result = QVariant(QPixmap::fromImage(std::move(image)));
|
|
}
|
|
_cache.emplace(name, result);
|
|
return result;
|
|
}
|
|
|
|
void ReplaceEmoji(QTextDocument *doc) {
|
|
QSignalBlocker blocker(doc);
|
|
const auto fontHeight = QFontMetrics(doc->defaultFont()).height();
|
|
auto cursor = QTextCursor(doc);
|
|
auto block = doc->begin();
|
|
while (block.isValid()) {
|
|
auto text = block.text();
|
|
auto start = text.constData();
|
|
auto end = start + text.size();
|
|
auto ch = start;
|
|
while (ch < end) {
|
|
auto emojiLength = 0;
|
|
const auto emoji = Ui::Emoji::Find(ch, end, &emojiLength);
|
|
if (!emoji || emojiLength <= 0) {
|
|
++ch;
|
|
continue;
|
|
}
|
|
const auto pos = block.position() + int(ch - start);
|
|
cursor.setPosition(pos);
|
|
cursor.setPosition(
|
|
pos + emojiLength,
|
|
QTextCursor::KeepAnchor);
|
|
|
|
auto format = QTextImageFormat();
|
|
format.setName(emoji->toUrl());
|
|
format.setWidth(fontHeight);
|
|
format.setHeight(fontHeight);
|
|
format.setVerticalAlignment(
|
|
QTextCharFormat::AlignBaseline);
|
|
cursor.insertImage(format);
|
|
|
|
block = doc->findBlock(pos);
|
|
text = block.text();
|
|
start = text.constData();
|
|
end = start + text.size();
|
|
ch = start + (pos - block.position()) + 1;
|
|
continue;
|
|
}
|
|
block = block.next();
|
|
}
|
|
}
|
|
|
|
QString RecoverTextFromDocument(QTextDocument *doc) {
|
|
auto result = QString();
|
|
auto block = doc->begin();
|
|
while (block.isValid()) {
|
|
if (block != doc->begin()) {
|
|
result += '\n';
|
|
}
|
|
auto it = block.begin();
|
|
while (!it.atEnd()) {
|
|
const auto fragment = it.fragment();
|
|
if (!fragment.isValid()) {
|
|
++it;
|
|
continue;
|
|
}
|
|
const auto text = fragment.text();
|
|
const auto format = fragment.charFormat();
|
|
for (const auto &ch : text) {
|
|
if (ch == QChar::ObjectReplacementCharacter) {
|
|
if (format.isImageFormat()) {
|
|
const auto name = format.toImageFormat().name();
|
|
if (const auto emoji = Ui::Emoji::FromUrl(name)) {
|
|
result += emoji->text();
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
result += ch;
|
|
}
|
|
++it;
|
|
}
|
|
block = block.next();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
} // namespace Editor
|