Dropdown menu for sticker packs

Telegram/Resources/langs/lang.strings

@@ -2483,4 +2483,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 "ktg_hide_pinned_message" = "Hide";
 
+"ktg_stickers_copy_title" = "Copy name";
+"ktg_stickers_title_copied" = "Sticker pack name copied to clipboard.";
+
 // Keys finished

Telegram/Resources/langs/rewrites/ru.json

@@ -109,5 +109,7 @@
 	"ktg_settings_top_bar_mute": "Уведомления вверху профиля",
 	"ktg_settings_messages": "Сообщения",
 	"ktg_settings_filters_hide_all": "Скрыть папку «Все чаты»",
-	"ktg_hide_pinned_message": "Скрыть"
+	"ktg_hide_pinned_message": "Скрыть",
+	"ktg_stickers_copy_title": "Копировать название",
+	"ktg_stickers_title_copied": "Название набора стикеров скопировано в буфер обмена."
 }

Telegram/SourceFiles/boxes/sticker_set_box.cpp

@@ -19,6 +19,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "dialogs/dialogs_layout.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/scroll_area.h"
+#include "ui/widgets/dropdown_menu.h"
 #include "ui/image/image.h"
 #include "ui/text/text_utilities.h"
 #include "ui/emoji_config.h"
@@ -31,6 +32,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "mainwidget.h"
 #include "mainwindow.h"
 #include "app.h"
+#include "styles/style_info.h"
 #include "styles/style_layers.h"
 #include "styles/style_chat_helpers.h"
 
@@ -187,6 +189,15 @@ void StickerSetBox::shareStickers() {
 	Ui::show(Box<InformBox>(tr::lng_stickers_copied(tr::now)));
 }
 
+void StickerSetBox::copyTitle() {
+	std::move(
+		_inner->title()
+	) | rpl::start_with_next([this](const TextWithEntities &value) {
+		QGuiApplication::clipboard()->setText(value.text);
+		Ui::show(Box<InformBox>(tr::ktg_stickers_title_copied(tr::now)));
+	}, lifetime());
+}
+
 void StickerSetBox::updateTitleAndButtons() {
 	setTitle(_inner->title());
 	updateButtons();
@@ -195,6 +206,9 @@ void StickerSetBox::updateTitleAndButtons() {
 void StickerSetBox::updateButtons() {
 	clearButtons();
 	if (_inner->loaded()) {
+		const auto moreButton = addTopButton(st::infoTopBarMenu);
+		moreButton->setClickedCallback([=] { showMenu(moreButton.data()); });
+
 		if (_inner->notInstalled()) {
 			addButton(tr::lng_stickers_add_pack(), [=] { addStickers(); });
 			addButton(tr::lng_cancel(), [=] { closeBox(); });
@@ -210,6 +224,47 @@ void StickerSetBox::updateButtons() {
 	update();
 }
 
+bool StickerSetBox::showMenu(not_null<Ui::IconButton*> button) {
+	if (_menu) {
+		_menu->hideAnimated(Ui::InnerDropdown::HideOption::IgnoreShow);
+		return true;
+	}
+
+	_menu = base::make_unique_q<Ui::DropdownMenu>(window());
+	const auto weak = _menu.get();
+	_menu->setHiddenCallback([=] {
+		weak->deleteLater();
+		if (_menu == weak) {
+			button->setForceRippled(false);
+		}
+	});
+	_menu->setShowStartCallback([=] {
+		if (_menu == weak) {
+			button->setForceRippled(true);
+		}
+	});
+	_menu->setHideStartCallback([=] {
+		if (_menu == weak) {
+			button->setForceRippled(false);
+		}
+	});
+	button->installEventFilter(_menu);
+
+	_menu->addAction(tr::ktg_stickers_copy_title(tr::now), [=] { copyTitle(); });
+	_menu->addAction(tr::lng_stickers_share_pack(tr::now), [=] { shareStickers(); });
+
+	const auto parentTopLeft = window()->mapToGlobal({ 0, 0 });
+	const auto buttonTopLeft = button->mapToGlobal({ 0, 0 });
+	const auto parentRect = QRect(parentTopLeft, window()->size());
+	const auto buttonRect = QRect(buttonTopLeft, button->size());
+	_menu->move(
+		buttonRect.x() + buttonRect.width() - _menu->width() - parentRect.x(),
+		buttonRect.y() + buttonRect.height() - parentRect.y() - style::ConvertScale(18));
+	_menu->showAnimated(Ui::PanelAnimation::Origin::TopRight);
+
+	return true;
+}
+
 void StickerSetBox::resizeEvent(QResizeEvent *e) {
 	BoxContent::resizeEvent(e);
 	_inner->resize(width(), _inner->height());

Telegram/SourceFiles/boxes/sticker_set_box.h

@@ -19,6 +19,7 @@ class SessionController;
 
 namespace Ui {
 class PlainShadow;
+class DropdownMenu;
 } // namespace Ui
 
 class StickerSetBox : public Ui::BoxContent, public RPCSender {
@@ -40,11 +41,14 @@ protected:
 private:
 	void updateTitleAndButtons();
 	void updateButtons();
+	bool showMenu(not_null<Ui::IconButton*> button);
 	void addStickers();
 	void shareStickers();
+	void copyTitle();
 
 	not_null<Window::SessionController*> _controller;
 	MTPInputStickerSet _set;
+	base::unique_qptr<Ui::DropdownMenu> _menu;
 
 	class Inner;
 	QPointer<Inner> _inner;