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Code Issues Releases Wiki Activity

Improve emoji quality while creating cache.

This commit is contained in:
John Preston 2019-01-11 11:45:10 +04:00
parent 3e7a688811
commit c4d919d46b
1 changed files with 21 additions and 9 deletions
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30
Telegram/SourceFiles/ui/emoji_config.cpp
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@ -297,7 +297,8 @@ std::vector<QImage> LoadSprites(int id) {
) | ranges::view::transform([&](int index) {
return base + QString::number(index + 1) + ".webp";
}) | ranges::view::transform([](const QString &path) {
return QImage(path, "WEBP");
return QImage(path, "WEBP").convertToFormat(
QImage::Format_ARGB32_Premultiplied);
}) | ranges::to_vector;
}
@ -383,14 +384,26 @@ void UniversalImages::draw(
int y) const {
Expects(emoji->sprite() < _sprites.size());
const auto factored = (size / p.device()->devicePixelRatio());
const auto large = kUniversalSize;
PainterHighQualityEnabler hq(p);
p.drawImage(
QRect(x, y, factored, factored),
_sprites[emoji->sprite()],
QRect(emoji->column() * large, emoji->row() * large, large, large));
const auto &original = _sprites[emoji->sprite()];
const auto data = original.bits();
const auto stride = original.bytesPerLine();
const auto format = original.format();
const auto row = emoji->row();
const auto column = emoji->column();
auto single = QImage(
data + (row * kImagesPerRow * large + column) * large * 4,
large,
large,
stride,
format
).scaled(
size,
size,
Qt::IgnoreAspectRatio,
Qt::SmoothTransformation);
single.setDevicePixelRatio(p.device()->devicePixelRatio());
p.drawImage(x, y, single);
}
QImage UniversalImages::generate(int size, int index) const {
@ -410,7 +423,6 @@ QImage UniversalImages::generate(int size, int index) const {
result.fill(Qt::transparent);
{
QPainter p(&result);
PainterHighQualityEnabler hq(p);
for (auto y = 0; y != rows; ++y) {
for (auto x = 0; x != kImagesPerRow; ++x) {
const auto single = QImage(