From ffb2c5093d70440a0c6a4d6e25beff8dc997a6bf Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 24 Jan 2023 15:09:11 +0400
Subject: [PATCH] Use StickersListFooter for GIFs section.

---
 .../chat_helpers/chat_helpers.style           |   2 -
 .../chat_helpers/gifs_list_widget.cpp         | 180 +++++++++---------
 .../chat_helpers/gifs_list_widget.h           |  16 +-
 .../chat_helpers/stickers_emoji_pack.cpp      |   1 +
 .../chat_helpers/stickers_emoji_pack.h        |   5 +
 .../chat_helpers/stickers_list_footer.cpp     |  55 ++++++
 .../chat_helpers/stickers_list_footer.h       |  11 ++
 7 files changed, 177 insertions(+), 93 deletions(-)

diff --git a/Telegram/SourceFiles/chat_helpers/chat_helpers.style b/Telegram/SourceFiles/chat_helpers/chat_helpers.style
index 7edb22d7a..f2e6ae5c4 100644
--- a/Telegram/SourceFiles/chat_helpers/chat_helpers.style
+++ b/Telegram/SourceFiles/chat_helpers/chat_helpers.style
@@ -353,8 +353,6 @@ gifsSearchField: defaultMultiSelectSearchField;
 gifsSearchFieldPosition: point(42px, 7px);
 gifsSearchCancel: defaultMultiSelectSearchCancel;
 gifsSearchCancelPosition: point(1px, 1px);
-gifsSearchIcon: boxFieldSearchIcon;
-gifsSearchIconPosition: point(6px, 7px);
 
 emojiSuggestionsDropdown: InnerDropdown(defaultInnerDropdown) {
 	scrollMargin: margins(0px, emojiColorsPadding, 0px, emojiColorsPadding);
diff --git a/Telegram/SourceFiles/chat_helpers/gifs_list_widget.cpp b/Telegram/SourceFiles/chat_helpers/gifs_list_widget.cpp
index 19bc50c75..2d3f87f94 100644
--- a/Telegram/SourceFiles/chat_helpers/gifs_list_widget.cpp
+++ b/Telegram/SourceFiles/chat_helpers/gifs_list_widget.cpp
@@ -10,6 +10,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "api/api_toggling_media.h" // Api::ToggleSavedGif
 #include "base/const_string.h"
 #include "base/qt/qt_key_modifiers.h"
+#include "chat_helpers/stickers_list_footer.h"
 #include "data/data_photo.h"
 #include "data/data_document.h"
 #include "data/data_emoji_statuses.h"
@@ -83,94 +84,6 @@ void AddGifAction(
 	}, saved ? &st::menuIconDelete : &st::menuIconGif);
 }
 
-class GifsListWidget::Footer : public TabbedSelector::InnerFooter {
-public:
-	Footer(not_null<GifsListWidget*> parent);
-
-	void stealFocus();
-	void returnFocus();
-	void setLoading(bool loading) {
-		_cancel->setLoadingAnimation(loading);
-	}
-
-protected:
-	void paintEvent(QPaintEvent *e) override;
-	void resizeEvent(QResizeEvent *e) override;
-
-	void processPanelHideFinished() override;
-
-private:
-	not_null<GifsListWidget*> _pan;
-
-	object_ptr<Ui::InputField> _field;
-	object_ptr<Ui::CrossButton> _cancel;
-
-	QPointer<QWidget> _focusTakenFrom;
-
-};
-
-GifsListWidget::Footer::Footer(not_null<GifsListWidget*> parent)
-: InnerFooter(parent, st::defaultEmojiPan)
-, _pan(parent)
-, _field(this, st::gifsSearchField, tr::lng_gifs_search())
-, _cancel(this, st::gifsSearchCancel) {
-	connect(_field, &Ui::InputField::submitted, [=] {
-		_pan->sendInlineRequest();
-	});
-	connect(_field, &Ui::InputField::cancelled, [=] {
-		if (_field->getLastText().isEmpty()) {
-			_pan->cancelled();
-		} else {
-			_field->setText(QString());
-		}
-	});
-	connect(_field, &Ui::InputField::changed, [=] {
-		_cancel->toggle(
-			!_field->getLastText().isEmpty(),
-			anim::type::normal);
-		_pan->searchForGifs(_field->getLastText());
-	});
-	_cancel->setClickedCallback([=] {
-		_field->setText(QString());
-	});
-}
-
-void GifsListWidget::Footer::stealFocus() {
-	if (!_focusTakenFrom) {
-		_focusTakenFrom = QApplication::focusWidget();
-	}
-	_field->setFocus();
-}
-
-void GifsListWidget::Footer::returnFocus() {
-	if (_focusTakenFrom) {
-		if (_field->hasFocus()) {
-			_focusTakenFrom->setFocus();
-		}
-		_focusTakenFrom = nullptr;
-	}
-}
-
-void GifsListWidget::Footer::paintEvent(QPaintEvent *e) {
-	Painter p(this);
-	st::gifsSearchIcon.paint(p, st::gifsSearchIconPosition.x(), st::gifsSearchIconPosition.y(), width());
-}
-
-void GifsListWidget::Footer::resizeEvent(QResizeEvent *e) {
-	auto fieldWidth = width()
-		- st::gifsSearchFieldPosition.x()
-		- st::gifsSearchCancelPosition.x()
-		- st::gifsSearchCancel.width;
-	_field->resizeToWidth(fieldWidth);
-	_field->moveToLeft(st::gifsSearchFieldPosition.x(), st::gifsSearchFieldPosition.y());
-	_cancel->moveToRight(st::gifsSearchCancelPosition.x(), st::gifsSearchCancelPosition.y());
-}
-
-void GifsListWidget::Footer::processPanelHideFinished() {
-	// Preserve panel state through visibility toggles.
-	//_field->setText(QString());
-}
-
 GifsListWidget::GifsListWidget(
 	QWidget *parent,
 	not_null<Window::SessionController*> controller,
@@ -241,8 +154,89 @@ auto GifsListWidget::inlineResultChosen() const
 object_ptr<TabbedSelector::InnerFooter> GifsListWidget::createFooter() {
 	Expects(_footer == nullptr);
 
-	auto result = object_ptr<Footer>(this);
+	using FooterDescriptor = StickersListFooter::Descriptor;
+	auto result = object_ptr<StickersListFooter>(FooterDescriptor{
+		.session = &session(),
+		.paused = pausedMethod(),
+		.parent = this,
+		.st = &st(),
+	});
 	_footer = result;
+
+	GifSectionsValue(
+		&session()
+	) | rpl::start_with_next([=](std::vector<GifSection> &&list) {
+		_sections = std::move(list);
+		refreshIcons();
+	}, _footer->lifetime());
+
+	_footer->setChosen(
+	) | rpl::start_with_next([=](uint64 setId) {
+		_chosenSetId = setId;
+		refreshIcons();
+		const auto i = ranges::find(_sections, setId, [](GifSection value) {
+			return value.document->id;
+		});
+		if (i != end(_sections)) {
+			searchForGifs(i->emoji->text());
+		}
+	}, _footer->lifetime());
+
+	return result;
+}
+
+void GifsListWidget::refreshIcons() {
+	if (_footer) {
+		_footer->refreshIcons(
+			fillIcons(),
+			_chosenSetId,
+			nullptr,
+			ValidateIconAnimations::None);
+	}
+}
+
+std::vector<StickerIcon> GifsListWidget::fillIcons() {
+	auto result = std::vector<StickerIcon>();
+	result.reserve(_sections.size() + 1);
+	result.emplace_back(Data::Stickers::RecentSetId);
+	for (const auto &section : _sections) {
+		const auto s = section.document;
+		const auto id = s->id;
+		const auto availw = st::stickerIconWidth - 2 * st::stickerIconPadding;
+		const auto availh = st().footer - 2 * st::stickerIconPadding;
+		const auto size = s->hasThumbnail()
+			? QSize(
+				s->thumbnailLocation().width(),
+				s->thumbnailLocation().height())
+			: QSize();
+		auto thumbw = size.width(), thumbh = size.height(), pixw = 1, pixh = 1;
+		if (availw * thumbh > availh * thumbw) {
+			pixh = availh;
+			pixw = (pixh * thumbw) / thumbh;
+		} else {
+			pixw = availw;
+			pixh = thumbw ? ((pixw * thumbh) / thumbw) : 1;
+		}
+		if (pixw < 1) pixw = 1;
+		if (pixh < 1) pixh = 1;
+		const auto owner = &s->owner();
+		const auto already = _fakeSets.find(id);
+		const auto set = (already != end(_fakeSets))
+			? already
+			: _fakeSets.emplace(
+				id,
+				std::make_unique<Data::StickersSet>(
+					owner,
+					id,
+					0,
+					0,
+					QString(),
+					QString(),
+					0,
+					Data::StickersSetFlag::Special,
+					0)).first;
+		result.emplace_back(set->second.get(), s, pixw, pixh);
+	}
 	return result;
 }
 
@@ -546,10 +540,16 @@ TabbedSelector::InnerFooter *GifsListWidget::getFooter() const {
 void GifsListWidget::processHideFinished() {
 	clearSelection();
 	clearHeavyData();
+	if (_footer) {
+		_footer->clearHeavyData();
+	}
 }
 
 void GifsListWidget::processPanelHideFinished() {
 	clearHeavyData();
+	if (_footer) {
+		_footer->clearHeavyData();
+	}
 }
 
 void GifsListWidget::clearHeavyData() {
@@ -813,6 +813,8 @@ void GifsListWidget::setupSearch() {
 	});
 	_search->queryValue(
 	) | rpl::start_with_next([=](std::vector<QString> &&query) {
+		_chosenSetId = Data::Stickers::RecentSetId;
+		refreshIcons();
 		searchForGifs(ranges::accumulate(query, QString(), [](
 				QString a,
 				QString b) {
diff --git a/Telegram/SourceFiles/chat_helpers/gifs_list_widget.h b/Telegram/SourceFiles/chat_helpers/gifs_list_widget.h
index ad04d23c9..c4e007f73 100644
--- a/Telegram/SourceFiles/chat_helpers/gifs_list_widget.h
+++ b/Telegram/SourceFiles/chat_helpers/gifs_list_widget.h
@@ -39,6 +39,10 @@ namespace SendMenu {
 enum class Type;
 } // namespace SendMenu
 
+namespace Data {
+class StickersSet;
+} // namespace Data
+
 namespace ChatHelpers {
 
 void AddGifAction(
@@ -46,6 +50,10 @@ void AddGifAction(
 	Window::SessionController *controller,
 	not_null<DocumentData*> document);
 
+class StickersListFooter;
+struct StickerIcon;
+struct GifSection;
+
 class GifsListWidget
 	: public TabbedSelector::Inner
 	, public InlineBots::Layout::Context {
@@ -109,7 +117,6 @@ private:
 		Inlines,
 		Gifs,
 	};
-	class Footer;
 
 	using InlineResult = InlineBots::Result;
 	using InlineResults = std::vector<std::unique_ptr<InlineResult>>;
@@ -134,6 +141,8 @@ private:
 
 	void updateSelected();
 	void paintInlineItems(Painter &p, QRect clip);
+	void refreshIcons();
+	[[nodiscard]] std::vector<StickerIcon> fillIcons();
 
 	void updateInlineItems();
 	void repaintItems(crl::time now = 0);
@@ -171,7 +180,10 @@ private:
 		not_null<InlineResult*>,
 		std::unique_ptr<LayoutItem>> _inlineLayouts;
 
-	Footer *_footer = nullptr;
+	StickersListFooter *_footer = nullptr;
+	std::vector<GifSection> _sections;
+	base::flat_map<uint64, std::unique_ptr<Data::StickersSet>> _fakeSets;
+	uint64 _chosenSetId = 0;
 
 	Mosaic::Layout::MosaicLayout<LayoutItem> _mosaic;
 
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.cpp b/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.cpp
index b56b70031..35af9b1d5 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.cpp
@@ -384,6 +384,7 @@ void EmojiPack::applySet(const MTPDmessages_stickerSet &data) {
 	for (const auto &[emoji, document] : was) {
 		refreshItems(emoji);
 	}
+	_refreshed.fire({});
 }
 
 void EmojiPack::applyAnimationsSet(const MTPDmessages_stickerSet &data) {
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.h b/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.h
index 8a4f7e956..0226b04ef 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers_emoji_pack.h
@@ -87,6 +87,9 @@ public:
 	[[nodiscard]] int animationsVersion() const {
 		return _animationsVersion;
 	}
+	[[nodiscard]] rpl::producer<> refreshed() const {
+		return _refreshed.events();
+	}
 
 	[[nodiscard]] std::unique_ptr<Lottie::SinglePlayer> effectPlayer(
 		not_null<DocumentData*> document,
@@ -135,6 +138,8 @@ private:
 		not_null<DocumentData*>,
 		std::weak_ptr<Lottie::FrameProvider>> _sharedProviders;
 
+	rpl::event_stream<> _refreshed;
+
 	rpl::lifetime _lifetime;
 
 };
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_footer.cpp b/Telegram/SourceFiles/chat_helpers/stickers_list_footer.cpp
index fa573e5da..4a5354fda 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_footer.cpp
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_footer.cpp
@@ -7,6 +7,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "chat_helpers/stickers_list_footer.h"
 
+#include "chat_helpers/stickers_emoji_pack.h"
 #include "chat_helpers/stickers_lottie.h"
 #include "data/stickers/data_stickers_set.h"
 #include "data/stickers/data_stickers.h"
@@ -16,6 +17,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_session.h"
 #include "data/data_document.h"
 #include "data/data_document_media.h"
+#include "main/main_account.h"
+#include "main/main_app_config.h"
 #include "main/main_session.h"
 #include "lang/lang_keys.h"
 #include "lottie/lottie_single_player.h"
@@ -90,6 +93,58 @@ std::optional<EmojiSection> SetIdEmojiSection(uint64 id) {
 		: std::optional<EmojiSection>();
 }
 
+[[nodiscard]] std::vector<QString> GifSearchEmojiFallback() {
+	return {
+		u"\xf0\x9f\x91\x8d"_q,
+		u"\xf0\x9f\x98\x98"_q,
+		u"\xf0\x9f\x98\x8d"_q,
+		u"\xf0\x9f\x98\xa1"_q,
+		u"\xf0\x9f\xa5\xb3"_q,
+		u"\xf0\x9f\x98\x82"_q,
+		u"\xf0\x9f\x98\xae"_q,
+		u"\xf0\x9f\x99\x84"_q,
+		u"\xf0\x9f\x98\x8e"_q,
+		u"\xf0\x9f\x91\x8e"_q,
+	};
+}
+
+rpl::producer<std::vector<GifSection>> GifSectionsValue(
+		not_null<Main::Session*> session) {
+	const auto config = &session->account().appConfig();
+	return rpl::single(
+		rpl::empty_value()
+	) | rpl::then(
+		config->refreshed()
+	) | rpl::map([=] {
+		return config->get<std::vector<QString>>(
+			u"gif_search_emojies"_q,
+			GifSearchEmojiFallback());
+	}) | rpl::distinct_until_changed(
+	) | rpl::map([=](const std::vector<QString> &emoji) {
+		const auto list = ranges::views::all(
+			emoji
+		) | ranges::views::transform([](const QString &val) {
+			return Ui::Emoji::Find(val);
+		}) | ranges::views::filter([](EmojiPtr emoji) {
+			return emoji != nullptr;
+		}) | ranges::to_vector;
+
+		const auto pack = &session->emojiStickersPack();
+		return rpl::single(
+			rpl::empty_value()
+		) | rpl::then(
+			pack->refreshed()
+		) | rpl::map([=, list = std::move(list)] {
+			 return list | ranges::views::transform([&](EmojiPtr emoji) {
+				const auto document = pack->stickerForEmoji(emoji).document;
+				return GifSection{ document, emoji };
+			}) | ranges::views::filter([](GifSection section) {
+				return (section.document != nullptr);
+			}) | ranges::to_vector;
+		}) | rpl::distinct_until_changed();
+	}) | rpl::flatten_latest();
+}
+
 StickerIcon::StickerIcon(uint64 setId) : setId(setId) {
 }
 
diff --git a/Telegram/SourceFiles/chat_helpers/stickers_list_footer.h b/Telegram/SourceFiles/chat_helpers/stickers_list_footer.h
index 07b8b0397..353118d32 100644
--- a/Telegram/SourceFiles/chat_helpers/stickers_list_footer.h
+++ b/Telegram/SourceFiles/chat_helpers/stickers_list_footer.h
@@ -52,6 +52,17 @@ enum class ValidateIconAnimations {
 [[nodiscard]] uint64 SearchEmojiSectionSetId();
 [[nodiscard]] std::optional<Ui::Emoji::Section> SetIdEmojiSection(uint64 id);
 
+struct GifSection {
+	DocumentData *document = nullptr;
+	EmojiPtr emoji;
+
+	friend inline constexpr auto operator<=>(
+		GifSection,
+		GifSection) = default;
+};
+[[nodiscard]] rpl::producer<std::vector<GifSection>> GifSectionsValue(
+	not_null<Main::Session*> session);
+
 struct StickerIcon {
 	explicit StickerIcon(uint64 setId);
 	StickerIcon(