Added animation of send action for stickers to middle of text.

Telegram/SourceFiles/data/data_session.h

@@ -405,6 +405,7 @@ public:
 
 	struct SendActionAnimationUpdate {
 		not_null<History*> history;
+		int left = 0;
 		int width = 0;
 		int height = 0;
 		bool textUpdated = false;

Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp

@@ -171,6 +171,7 @@ InnerWidget::InnerWidget(
 			const Data::Session::SendActionAnimationUpdate &update) {
 		using RowPainter = Layout::RowPainter;
 		const auto updateRect = RowPainter::sendActionAnimationRect(
+			update.left,
 			update.width,
 			update.height,
 			width(),

Telegram/SourceFiles/dialogs/dialogs_layout.cpp

@@ -943,11 +943,24 @@ void RowPainter::paint(
 		paintCounterCallback);
 }
 
-QRect RowPainter::sendActionAnimationRect(int animationWidth, int animationHeight, int fullWidth, bool textUpdated) {
-	auto nameleft = st::dialogsPadding.x() + st::dialogsPhotoSize + st::dialogsPhotoPadding;
-	auto namewidth = fullWidth - nameleft - st::dialogsPadding.x();
-	auto texttop = st::dialogsPadding.y() + st::msgNameFont->height + st::dialogsSkip;
-	return QRect(nameleft, texttop, textUpdated ? namewidth : animationWidth, animationHeight);
+QRect RowPainter::sendActionAnimationRect(
+		int animationLeft,
+		int animationWidth,
+		int animationHeight,
+		int fullWidth,
+		bool textUpdated) {
+	const auto nameleft = st::dialogsPadding.x()
+		+ st::dialogsPhotoSize
+		+ st::dialogsPhotoPadding;
+	const auto namewidth = fullWidth - nameleft - st::dialogsPadding.x();
+	const auto texttop = st::dialogsPadding.y()
+		+ st::msgNameFont->height
+		+ st::dialogsSkip;
+	return QRect(
+		nameleft + (textUpdated ? 0 : animationLeft),
+		texttop,
+		textUpdated ? namewidth : animationWidth,
+		animationHeight);
 }
 
 void PaintCollapsedRow(

Telegram/SourceFiles/dialogs/dialogs_layout.h

@@ -39,6 +39,7 @@ public:
 		crl::time ms,
 		bool displayUnreadInfo);
 	static QRect sendActionAnimationRect(
+		int animationLeft,
 		int animationWidth,
 		int animationHeight,
 		int fullWidth,

Telegram/SourceFiles/history/view/history_view_send_action.cpp

@@ -11,6 +11,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_session.h"
 #include "main/main_session.h"
 #include "history/history.h"
+#include "lang/lang_instance.h" // Instance::supportChoosingStickerReplacement
 #include "lang/lang_keys.h"
 #include "ui/effects/animations.h"
 #include "ui/text/text_options.h"
@@ -39,6 +40,7 @@ constexpr auto kStatusShowClientsideSpeaking = 6 * crl::time(1000);
 SendActionPainter::SendActionPainter(not_null<History*> history)
 : _history(history)
 , _weak(&_history->session())
+, _st(st::dialogsTextStyle)
 , _sendActionText(st::dialogsTextWidthMin) {
 }
 
@@ -130,16 +132,29 @@ bool SendActionPainter::paint(
 		style::color color,
 		crl::time ms) {
 	if (_sendActionAnimation) {
+		const auto animationWidth = _sendActionAnimation.width();
+		const auto extraAnimationWidth = _animationLeft
+			? animationWidth * 2
+			: 0;
+		const auto left =
+			(availableWidth < _animationLeft + extraAnimationWidth)
+				? 0
+				: _animationLeft;
 		_sendActionAnimation.paint(
 			p,
 			color,
-			x,
+			left + x,
 			y + st::normalFont->ascent,
 			outerWidth,
 			ms);
-		auto animationWidth = _sendActionAnimation.width();
-		x += animationWidth;
-		availableWidth -= animationWidth;
+		// availableWidth should be the same
+		// if an animation is in the middle of text.
+		if (!left) {
+			x += animationWidth;
+			availableWidth -= _animationLeft
+				? extraAnimationWidth
+				: animationWidth;
+		}
 		p.setPen(color);
 		_sendActionText.drawElided(p, x, y, availableWidth);
 		return true;
@@ -270,6 +285,30 @@ bool SendActionPainter::updateNeedsAnimating(crl::time now, bool force) {
 					_history->peer->isUser() ? QString() : user->firstName);
 				if (!newTypingString.isEmpty()) {
 					_sendActionAnimation.start(action.type);
+
+					// Add an animation to the middle of text.
+					using namespace Lang;
+					if (GetInstance().supportChoosingStickerReplacement()
+							&& (action.type == Type::ChooseSticker)) {
+
+						const auto index = newTypingString.lastIndexOf(
+							Lang::kChoosingStickerReplacement.utf8());
+						_animationLeft = (index == -1)
+							? 0
+							: _st.font->width(newTypingString, 0, index);
+
+						if (!_spacesCount) {
+							_spacesCount = std::ceil(
+								_sendActionAnimation.width()
+									/ _st.font->spacew);
+						}
+						newTypingString = newTypingString.replace(
+							Lang::kChoosingStickerReplacement.utf8(),
+							QString().fill(' ', _spacesCount));
+					} else {
+						_animationLeft = 0;
+					}
+
 					break;
 				}
 			}
@@ -327,6 +366,7 @@ bool SendActionPainter::updateNeedsAnimating(crl::time now, bool force) {
 		|| (sendActionResult && !anim::Disabled())) {
 		_history->peer->owner().updateSendActionAnimation({
 			_history,
+			_animationLeft,
 			_sendActionAnimation.width(),
 			st::normalFont->height,
 			(force || sendActionChanged)

Telegram/SourceFiles/history/view/history_view_send_action.h

@@ -54,6 +54,7 @@ public:
 private:
 	const not_null<History*> _history;
 	const base::weak_ptr<Main::Session> _weak;
+	const style::TextStyle &_st;
 	base::flat_map<not_null<UserData*>, crl::time> _typing;
 	base::flat_map<not_null<UserData*>, crl::time> _speaking;
 	base::flat_map<not_null<UserData*>, Api::SendProgress> _sendActions;
@@ -62,6 +63,9 @@ private:
 	Ui::SendActionAnimation _sendActionAnimation;
 	Ui::SendActionAnimation _speakingAnimation;
 
+	int _animationLeft = 0;
+	int _spacesCount = 0;
+
 };
 
 } // namespace HistoryView

Telegram/SourceFiles/lang/lang_instance.cpp

@@ -303,6 +303,7 @@ void Instance::reset(const Language &data) {
 		_values[i] = GetOriginalValue(ushort(i));
 	}
 	ranges::fill(_nonDefaultSet, 0);
+	updateSupportChoosingStickerReplacement();
 
 	_idChanges.fire_copy(_id);
 }
@@ -548,6 +549,7 @@ void Instance::fillFromSerialized(
 		applyValue(nonDefaultStrings[i], nonDefaultStrings[i + 1]);
 	}
 	updatePluralRules();
+	updateSupportChoosingStickerReplacement();
 
 	_idChanges.fire_copy(_id);
 }
@@ -572,6 +574,7 @@ void Instance::fillFromCustomContent(
 	_pluralId = PluralCodeForCustom(absolutePath, relativePath);
 	_name = _nativeName = QString();
 	loadFromCustomContent(absolutePath, relativePath, content);
+	updateSupportChoosingStickerReplacement();
 
 	_idChanges.fire_copy(_id);
 }
@@ -602,6 +605,20 @@ bool Instance::loadFromCustomFile(const QString &filePath) {
 	return false;
 }
 
+void Instance::updateSupportChoosingStickerReplacement() {
+	// A language changing in the runtime is not supported.
+	const auto phrase = tr::lng_send_action_choose_sticker(tr::now);
+	const auto first = phrase.indexOf(kChoosingStickerReplacement.utf8());
+	const auto last = phrase.lastIndexOf(kChoosingStickerReplacement.utf8());
+	_supportChoosingStickerReplacement = (first == last)
+		? (first != -1)
+		: false;
+}
+
+bool Instance::supportChoosingStickerReplacement() const {
+	return _supportChoosingStickerReplacement;
+}
+
 // SetCallback takes two QByteArrays: key, value.
 // It is called for all key-value pairs in string.
 // ResetCallback takes one QByteArray: key.

Telegram/SourceFiles/lang/lang_instance.h

@@ -13,6 +13,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 namespace Lang {
 
+inline constexpr auto kChoosingStickerReplacement = "oo"_cs;
+
 struct Language {
 	QString id;
 	QString pluralId;
@@ -74,6 +76,8 @@ public:
 	QByteArray serialize() const;
 	void fillFromSerialized(const QByteArray &data, int dataAppVersion);
 
+	bool supportChoosingStickerReplacement() const;
+
 	void applyDifference(
 		Pack pack,
 		const MTPDlangPackDifference &difference);
@@ -120,6 +124,7 @@ private:
 		const QString &relativePath,
 		const QByteArray &content);
 	void updatePluralRules();
+	void updateSupportChoosingStickerReplacement();
 
 	Instance *_derived = nullptr;
 
@@ -132,6 +137,8 @@ private:
 	int _version = 0;
 	rpl::event_stream<> _updated;
 
+	bool _supportChoosingStickerReplacement;
+
 	mutable QString _systemLanguage;
 
 	std::vector<QString> _values;