Added stickers panel controller for photo editor.

Telegram/CMakeLists.txt

@@ -524,6 +524,8 @@ PRIVATE
     editor/photo_editor_layer_widget.h
     editor/scene_item_base.cpp
     editor/scene_item_base.h
+    editor/stickers_panel_controller.cpp
+    editor/stickers_panel_controller.h
     editor/undo_controller.cpp
     editor/undo_controller.h
     export/export_manager.cpp

Telegram/SourceFiles/editor/stickers_panel_controller.cpp

@@ -0,0 +1,75 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "editor/stickers_panel_controller.h"
+
+#include "chat_helpers/tabbed_panel.h"
+#include "chat_helpers/tabbed_selector.h"
+#include "styles/style_chat_helpers.h"
+
+namespace Editor {
+
+StickersPanelController::StickersPanelController(
+	not_null<Ui::RpWidget*> panelContainer,
+	not_null<Window::SessionController*> controller)
+: _stickersPanel(
+	base::make_unique_q<ChatHelpers::TabbedPanel>(
+		panelContainer,
+		controller,
+		object_ptr<ChatHelpers::TabbedSelector>(
+			nullptr,
+			controller,
+			ChatHelpers::TabbedSelector::Mode::Full))) {
+	_stickersPanel->setDesiredHeightValues(
+		1.,
+		st::emojiPanMinHeight / 2,
+		st::emojiPanMinHeight);
+	_stickersPanel->hide();
+}
+
+auto StickersPanelController::stickerChosen() const
+-> rpl::producer<not_null<DocumentData*>> {
+	return _stickersPanel->selector()->fileChosen(
+	) | rpl::map([](const ChatHelpers::TabbedSelector::FileChosen &data) {
+		return data.document;
+	});
+}
+
+rpl::producer<bool> StickersPanelController::panelShown() const {
+	return _stickersPanel->shownValue();
+}
+
+void StickersPanelController::setShowRequestChanges(
+		rpl::producer<std::optional<bool>> &&showRequest) {
+	std::move(
+		showRequest
+	) | rpl::start_with_next([=](std::optional<bool> show) {
+		if (!show) {
+			_stickersPanel->toggleAnimated();
+			_stickersPanel->raise();
+			return;
+		}
+		if (*show) {
+			_stickersPanel->showAnimated();
+		} else {
+			_stickersPanel->toggleAnimated();
+		}
+	}, _stickersPanel->lifetime());
+}
+
+void StickersPanelController::setMoveRequestChanges(
+		rpl::producer<QPoint> &&moveRequest) {
+	std::move(
+		moveRequest
+	) | rpl::start_with_next([=](const QPoint &point) {
+		_stickersPanel->moveBottomRight(
+			point.y(),
+			point.x() + _stickersPanel->width() / 2);
+	}, _stickersPanel->lifetime());
+}
+
+} // namespace Editor

Telegram/SourceFiles/editor/stickers_panel_controller.h

@@ -0,0 +1,46 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#pragma once
+
+#include "base/unique_qptr.h"
+
+namespace ChatHelpers {
+class TabbedPanel;
+} // namespace ChatHelpers
+
+namespace Ui {
+class RpWidget;
+} // namespace Ui
+
+namespace Window {
+class SessionController;
+} // namespace Window
+
+namespace Editor {
+
+class StickersPanelController final {
+public:
+	StickersPanelController(
+		not_null<Ui::RpWidget*> panelContainer,
+		not_null<Window::SessionController*> controller);
+
+	[[nodiscard]] auto stickerChosen() const
+	-> rpl::producer<not_null<DocumentData*>>;
+	[[nodiscard]] rpl::producer<bool> panelShown() const;
+
+	void setShowRequestChanges(
+		rpl::producer<std::optional<bool>> &&showRequest);
+	// Middle x and plain y position.
+	void setMoveRequestChanges(rpl::producer<QPoint> &&moveRequest);
+
+private:
+	const base::unique_qptr<ChatHelpers::TabbedPanel> _stickersPanel;
+
+};
+
+} // namespace Editor