From d60ce41fa9b1cb448439b587dd3e0255e3984f31 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 29 Jan 2025 10:26:42 +0400
Subject: [PATCH] Add a gift button to channel bottom.

---
 .../chat_helpers/chat_helpers.style           |  7 ++++++
 .../SourceFiles/history/history_widget.cpp    | 22 +++++++++++++++++++
 Telegram/SourceFiles/history/history_widget.h |  2 ++
 3 files changed, 31 insertions(+)

diff --git a/Telegram/SourceFiles/chat_helpers/chat_helpers.style b/Telegram/SourceFiles/chat_helpers/chat_helpers.style
index 2ad236013..3c1518b37 100644
--- a/Telegram/SourceFiles/chat_helpers/chat_helpers.style
+++ b/Telegram/SourceFiles/chat_helpers/chat_helpers.style
@@ -855,6 +855,13 @@ historyComposeButton: FlatButton {
 		color: historyComposeButtonBgRipple;
 	}
 }
+historyGiftToChannel: IconButton(defaultIconButton) {
+	width: 46px;
+	height: 46px;
+
+	icon: icon{{ "menu/gift_premium", windowActiveTextFg }};
+	iconOver: icon{{ "menu/gift_premium", windowActiveTextFg }};
+}
 historyUnblock: FlatButton(historyComposeButton) {
 	color: attentionButtonFg;
 	overColor: attentionButtonFgOver;
diff --git a/Telegram/SourceFiles/history/history_widget.cpp b/Telegram/SourceFiles/history/history_widget.cpp
index 6c337f9c0..74f354e8a 100644
--- a/Telegram/SourceFiles/history/history_widget.cpp
+++ b/Telegram/SourceFiles/history/history_widget.cpp
@@ -22,6 +22,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "boxes/moderate_messages_box.h"
 #include "boxes/premium_limits_box.h"
 #include "boxes/premium_preview_box.h"
+#include "boxes/star_gift_box.h"
 #include "boxes/peers/edit_peer_permissions_box.h" // ShowAboutGigagroup.
 #include "boxes/peers/edit_peer_requests_box.h"
 #include "core/file_utilities.h"
@@ -377,6 +378,7 @@ HistoryWidget::HistoryWidget(
 	_botStart->addClickHandler([=] { sendBotStartCommand(); });
 	_joinChannel->addClickHandler([=] { joinChannel(); });
 	_muteUnmute->addClickHandler([=] { toggleMuteUnmute(); });
+	setupGiftToChannelButton();
 	_reportMessages->addClickHandler([=] { reportSelectedMessages(); });
 	_field->submits(
 	) | rpl::start_with_next([=](Qt::KeyboardModifiers modifiers) {
@@ -2033,6 +2035,20 @@ void HistoryWidget::setupShortcuts() {
 	}, lifetime());
 }
 
+void HistoryWidget::setupGiftToChannelButton() {
+	_giftToChannel = Ui::CreateChild<Ui::IconButton>(
+		_muteUnmute.data(),
+		st::historyGiftToChannel);
+	_muteUnmute->widthValue() | rpl::start_with_next([=](int width) {
+		_giftToChannel->moveToRight(0, 0);
+	}, _giftToChannel->lifetime());
+	_giftToChannel->setClickedCallback([=] {
+		if (_peer) {
+			Ui::ShowStarGiftBox(controller(), _peer);
+		}
+	});
+}
+
 void HistoryWidget::pushReplyReturn(not_null<HistoryItem*> item) {
 	if (item->history() != _history && item->history() != _migrated) {
 		return;
@@ -2415,6 +2431,8 @@ void HistoryWidget::showHistory(
 			) | rpl::start_with_next([=] {
 				updateControlsGeometry();
 			}, _businessBotStatus->bar().lifetime());
+		} else if (const auto channel = _peer->asChannel()) {
+			_giftToChannel->setVisible(channel->stargiftsAvailable());
 		}
 		orderWidgets();
 		controller()->tabbedSelector()->setCurrentPeer(_peer);
@@ -8358,6 +8376,10 @@ void HistoryWidget::fullInfoUpdated() {
 		if (clearMaybeSendStart() && !_history->isDisplayedEmpty()) {
 			sendBotStartCommand();
 		}
+
+		if (const auto channel = _peer->asChannel()) {
+			_giftToChannel->setVisible(channel->stargiftsAvailable());
+		}
 	}
 	if (updateCmdStartShown()) {
 		refresh = true;
diff --git a/Telegram/SourceFiles/history/history_widget.h b/Telegram/SourceFiles/history/history_widget.h
index 7fa51470f..9bdced55b 100644
--- a/Telegram/SourceFiles/history/history_widget.h
+++ b/Telegram/SourceFiles/history/history_widget.h
@@ -523,6 +523,7 @@ private:
 	}
 
 	void setupShortcuts();
+	void setupGiftToChannelButton();
 
 	void handlePeerMigration();
 
@@ -785,6 +786,7 @@ private:
 	object_ptr<Ui::FlatButton> _botStart;
 	object_ptr<Ui::FlatButton> _joinChannel;
 	object_ptr<Ui::FlatButton> _muteUnmute;
+	QPointer<Ui::IconButton> _giftToChannel;
 	object_ptr<Ui::FlatButton> _reportMessages;
 	struct {
 		object_ptr<Ui::RoundButton> button = { nullptr };