From a0a857a6dbbcf6d2db5cb92b62fa3b0af5cd22ca Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Fri, 11 Feb 2022 08:24:54 +0300
Subject: [PATCH] Added simple animation of stickers sending from autocomplete
 field.

---
 .../chat_helpers/field_autocomplete.cpp       | 49 ++++++++++++++++---
 .../chat_helpers/field_autocomplete.h         |  2 +
 .../SourceFiles/history/history_widget.cpp    |  5 +-
 .../history_view_compose_controls.cpp         |  1 +
 4 files changed, 48 insertions(+), 9 deletions(-)

diff --git a/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp b/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp
index 9575eb7b2b..00483372ca 100644
--- a/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp
+++ b/Telegram/SourceFiles/chat_helpers/field_autocomplete.cpp
@@ -96,6 +96,7 @@ private:
 	void mouseReleaseEvent(QMouseEvent *e) override;
 	void contextMenuEvent(QContextMenuEvent *e) override;
 
+	QRect selectedRect(int index) const;
 	void updateSelectedRow();
 	void setSel(int sel, bool scroll = false);
 	void showPreview();
@@ -1089,7 +1090,25 @@ bool FieldAutocomplete::Inner::chooseAtIndex(
 	if (!_srows->empty()) {
 		if (index < _srows->size()) {
 			const auto document = (*_srows)[index].document;
-			_stickerChosen.fire({ document, options, method });
+
+			const auto from = [&]() -> Ui::MessageSendingAnimationFrom {
+				if (options.scheduled) {
+					return {};
+				}
+				const auto bounding = selectedRect(index);
+				auto contentRect = QRect(
+					QPoint(),
+					ChatHelpers::ComputeStickerSize(
+						document,
+						stickerBoundingBox()));
+				contentRect.moveCenter(bounding.center());
+				return {
+					_controller->session().data().nextLocalMessageId(),
+					mapToGlobal(std::move(contentRect)),
+				};
+			};
+
+			_stickerChosen.fire({ document, options, method, from() });
 			return true;
 		}
 	} else if (!_mrows->empty()) {
@@ -1228,14 +1247,28 @@ void FieldAutocomplete::Inner::leaveEventHook(QEvent *e) {
 	}
 }
 
+QRect FieldAutocomplete::Inner::selectedRect(int index) const {
+	if (index < 0) {
+		return QRect();
+	}
+	if (_srows->empty()) {
+		return { 0, index * st::mentionHeight, width(), st::mentionHeight };
+	} else {
+		const auto row = int(index / _stickersPerRow);
+		const auto col = int(index % _stickersPerRow);
+		return {
+			st::stickerPanPadding + col * st::stickerPanSize.width(),
+			st::stickerPanPadding + row * st::stickerPanSize.height(),
+			st::stickerPanSize.width(),
+			st::stickerPanSize.height()
+		};
+	}
+}
+
 void FieldAutocomplete::Inner::updateSelectedRow() {
-	if (_sel >= 0) {
-		if (_srows->empty()) {
-			update(0, _sel * st::mentionHeight, width(), st::mentionHeight);
-		} else {
-			int32 row = _sel / _stickersPerRow, col = _sel % _stickersPerRow;
-			update(st::stickerPanPadding + col * st::stickerPanSize.width(), st::stickerPanPadding + row * st::stickerPanSize.height(), st::stickerPanSize.width(), st::stickerPanSize.height());
-		}
+	const auto rect = selectedRect(_sel);
+	if (rect.isValid()) {
+		update(rect);
 	}
 }
 
diff --git a/Telegram/SourceFiles/chat_helpers/field_autocomplete.h b/Telegram/SourceFiles/chat_helpers/field_autocomplete.h
index b6a3e0e087..abfb65fb2e 100644
--- a/Telegram/SourceFiles/chat_helpers/field_autocomplete.h
+++ b/Telegram/SourceFiles/chat_helpers/field_autocomplete.h
@@ -9,6 +9,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "api/api_common.h"
 #include "ui/effects/animations.h"
+#include "ui/effects/message_sending_animation_common.h"
 #include "ui/rp_widget.h"
 #include "base/timer.h"
 #include "base/object_ptr.h"
@@ -86,6 +87,7 @@ public:
 		not_null<DocumentData*> sticker;
 		Api::SendOptions options;
 		ChooseMethod method;
+		Ui::MessageSendingAnimationFrom messageSendingFrom;
 	};
 	enum class Type {
 		Mentions,
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index eb57de9ee3..f276c5aa39 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -401,7 +401,10 @@ HistoryWidget::HistoryWidget(
 
 	_fieldAutocomplete->stickerChosen(
 	) | rpl::start_with_next([=](FieldAutocomplete::StickerChosen data) {
-		sendExistingDocument(data.sticker, data.options);
+		controller->sendingAnimation().appendSending(
+			data.messageSendingFrom);
+		const auto localId = data.messageSendingFrom.localId;
+		sendExistingDocument(data.sticker, data.options, localId);
 	}, lifetime());
 
 	_fieldAutocomplete->setModerateKeyActivateCallback([=](int key) {
diff --git a/Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp b/Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp
index 13946c0adb..a8c2ec6c8e 100644
--- a/Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp
+++ b/Telegram/SourceFiles/history/view/controls/history_view_compose_controls.cpp
@@ -1254,6 +1254,7 @@ void ComposeControls::initAutocomplete() {
 		_fileChosen.fire(FileChosen{
 			.document = data.sticker,
 			.options = data.options,
+			.messageSendingFrom = base::take(data.messageSendingFrom),
 		});
 	}, _autocomplete->lifetime());