POC: Wayland fractional scale support

Author: zvova7890

.gitmodules

@@ -24,10 +24,10 @@
 	url = https://github.com/desktop-app/codegen.git
 [submodule "Telegram/lib_ui"]
 	path = Telegram/lib_ui
-	url = https://github.com/desktop-app/lib_ui.git
+	url = git@github.com:zvova7890/lib_ui.git
 [submodule "Telegram/lib_lottie"]
 	path = Telegram/lib_lottie
-	url = https://github.com/desktop-app/lib_lottie.git
+	url = git@github.com:zvova7890/lib_lottie.git
 [submodule "Telegram/lib_tl"]
 	path = Telegram/lib_tl
 	url = https://github.com/desktop-app/lib_tl.git

Telegram/SourceFiles/api/api_chat_invite.cpp

@@ -154,7 +154,7 @@ void ConfirmSubscriptionBox(
 			creditsIconSize,
 			1.5);
 	state->frame = QImage(
-		Size(photoSize * style::DevicePixelRatio()),
+		Size(style::DevicePixels(photoSize)),
 		QImage::Format_ARGB32_Premultiplied);
 	state->frame.setDevicePixelRatio(style::DevicePixelRatio());
 	const auto options = Images::Option::RoundCircle;

Telegram/SourceFiles/boxes/background_box.cpp

@@ -657,7 +657,7 @@ void BackgroundBox::Inner::validatePaperThumbnail(
 		} else if (!paper.data.backgroundColors().empty()) {
 			paper.thumbnail = Ui::PixmapFromImage(
 				Ui::GenerateBackgroundImage(
-					st::backgroundSize * style::DevicePixelRatio(),
+					style::DevicePixels(st::backgroundSize),
 					paper.data.backgroundColors(),
 					paper.data.gradientRotation()));
 			paper.thumbnail.setDevicePixelRatio(style::DevicePixelRatio());

Telegram/SourceFiles/boxes/background_preview_box.cpp

@@ -121,8 +121,9 @@ constexpr auto kMaxWallPaperSlugLength = 255;
 	const auto takeHeight = (width > height)
 		? size
 		: (height * size / width);
-	const auto ratio = style::DevicePixelRatio();
-	return Images::Prepare(image, QSize(takeWidth, takeHeight) * ratio, {
+	return Images::Prepare(image, QSize(
+		style::DevicePixels(takeWidth),
+		style::DevicePixels(takeHeight)), {
 		.options = Images::Option::TransparentBackground | blur,
 		.outer = { size, size },
 	});
@@ -725,7 +726,7 @@ void BackgroundPreviewBox::applyForPeer() {
 	} else if (_forBothOverlay) {
 		return;
 	}
-	const auto size = this->size() * style::DevicePixelRatio();
+	const auto size = style::DevicePixels(this->size());
 	const auto bg = Images::DitherImage(
 		Images::BlurLargeImage(
 			Ui::GrabWidgetToImage(this).scaled(

Telegram/SourceFiles/boxes/filters/edit_filter_links.cpp

@@ -359,7 +359,9 @@ PaintRoundImageCallback ChatRow::generatePaintUserpicCallback(
 			int outerWidth,
 			int size) mutable {
 		const auto wide = size + style::ConvertScale(3);
-		const auto full = QSize(wide, wide) * style::DevicePixelRatio();
+		const auto full = QSize(
+			style::DevicePixels(wide),
+			style::DevicePixels(wide));
 		auto repaint = false;
 		if (_disabledFrame.size() != full) {
 			repaint = true;
@@ -967,7 +969,7 @@ void LinksController::rowPaintIcon(
 	auto &icon = _icons[int(color)];
 	if (icon.isNull()) {
 		icon = QImage(
-			QSize(inner, inner) * style::DevicePixelRatio(),
+			style::DevicePixels(QSize(inner, inner)),
 			QImage::Format_ARGB32_Premultiplied);
 		icon.fill(Qt::transparent);
 		icon.setDevicePixelRatio(style::DevicePixelRatio());

Telegram/SourceFiles/boxes/gift_premium_box.cpp

@@ -416,13 +416,12 @@ using SpinnerState = Data::GiftUpgradeSpinner::State;
 				return;
 			}
 		}
-		const auto ratio = style::DevicePixelRatio();
 		const auto h = raw->height();
-		if (state->fading.height() != h * ratio) {
-			state->fading = QImage(
-				QSize(1, h) * ratio,
+		const auto pixelHeight = style::DevicePixels(h);
+		if (state->fading.height() != pixelHeight) {
+			state->fading = QImage(style::DevicePixels(QSize(1, h)),
 				QImage::Format_ARGB32_Premultiplied);
-			state->fading.setDevicePixelRatio(ratio);
+			state->fading.setDevicePixelRatio(style::DevicePixelRatio());
 			state->fading.fill(Qt::transparent);
 			auto q = QPainter(&state->fading);
 			auto brush = QLinearGradient(0, 0, 0, margin.top());
@@ -439,7 +438,7 @@ using SpinnerState = Data::GiftUpgradeSpinner::State;
 		auto &now = state->rows[state->nowIndex];
 		const auto validate = [&](Row &row) {
 			const auto size = row.widget->size();
-			if (row.frame.size() != size * ratio) {
+			if (row.frame.size() != style::DevicePixels(size)) {
 				row.frame = Ui::GrabWidgetToImage(row.widget.get());
 			}
 		};

Telegram/SourceFiles/boxes/peer_list_box.cpp

@@ -67,11 +67,12 @@ PaintRoundImageCallback ForceRoundUserpicCallback(not_null<PeerData*> peer) {
 	auto userpic = Ui::PeerUserpicView();
 	auto cache = std::make_shared<QImage>();
 	return [=](Painter &p, int x, int y, int outerWidth, int size) mutable {
-		const auto ratio = style::DevicePixelRatio();
-		const auto cacheSize = QSize(size, size) * ratio;
+		const auto cacheSize = QSize(
+			style::DevicePixels(size),
+			style::DevicePixels(size));
 		if (cache->size() != cacheSize) {
 			*cache = QImage(cacheSize, QImage::Format_ARGB32_Premultiplied);
-			cache->setDevicePixelRatio(ratio);
+			cache->setDevicePixelRatio(style::DevicePixelRatio());
 		}
 		auto q = Painter(cache.get());
 		peer->paintUserpicLeft(q, userpic, 0, 0, outerWidth, size);

Telegram/SourceFiles/boxes/peers/add_participants_box.cpp

@@ -337,7 +337,7 @@ PaintRoundImageCallback ForbiddenRow::generatePaintUserpicCallback(
 			int outerWidth,
 			int size) mutable {
 		const auto wide = size + style::ConvertScale(3);
-		const auto full = QSize(wide, wide) * style::DevicePixelRatio();
+		const auto full = style::DevicePixels(QSize(wide, wide));
 		auto repaint = false;
 		if (_disabledFrame.size() != full) {
 			repaint = true;

Telegram/SourceFiles/boxes/peers/edit_peer_color_box.cpp

@@ -2827,9 +2827,9 @@ void CheckBoostLevel(
 ButtonWithEmoji ButtonStyleWithRightEmoji(
 		not_null<Ui::RpWidget*> parent,
 		const QString &noneString,
-		const style::SettingsButton &parentSt) {
+	const style::SettingsButton &parentSt) {
 	const auto ratio = style::DevicePixelRatio();
-	const auto emojiWidth = Data::FrameSizeFromTag({}) / ratio;
+	const auto emojiWidth = qRound(Data::FrameSizeFromTag({}) / ratio);
 
 	const auto noneWidth = st::normalFont->width(noneString);
 

Telegram/SourceFiles/boxes/peers/edit_peer_invite_links.cpp

@@ -708,7 +708,7 @@ void LinksController::rowPaintIcon(
 	auto &icon = _icons[int(color)];
 	if (icon.isNull()) {
 		icon = QImage(
-			QSize(inner, inner) * style::DevicePixelRatio(),
+			style::DevicePixels(QSize(inner, inner)),
 			QImage::Format_ARGB32_Premultiplied);
 		icon.fill(Qt::transparent);
 		icon.setDevicePixelRatio(style::DevicePixelRatio());