init

Telegram/SourceFiles/ui/controls/emoji_button_factory.cpp

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+/*
+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 "ui/controls/emoji_button_factory.h"
+
+#include "base/event_filter.h"
+#include "chat_helpers/emoji_suggestions_widget.h"
+#include "chat_helpers/message_field.h"
+#include "chat_helpers/tabbed_panel.h"
+#include "chat_helpers/tabbed_selector.h"
+#include "ui/controls/emoji_button.h"
+#include "ui/effects/fade_animation.h"
+#include "ui/layers/box_content.h"
+#include "ui/rect.h"
+#include "ui/widgets/fields/input_field.h"
+#include "window/window_session_controller.h"
+#include "styles/style_chat_helpers.h" // defaultComposeFiles.
+#include "styles/style_settings.h"
+
+namespace Ui {
+
+[[nodiscard]] not_null<Ui::EmojiButton*> AddEmojiToggleToField(
+		not_null<Ui::InputField*> field,
+		not_null<Ui::BoxContent*> box,
+		not_null<Window::SessionController*> controller,
+		not_null<ChatHelpers::TabbedPanel*> emojiPanel,
+		QPoint shift) {
+	const auto emojiToggle = Ui::CreateChild<Ui::EmojiButton>(
+		field->parentWidget(),
+		st::defaultComposeFiles.emoji);
+	const auto fade = Ui::CreateChild<Ui::FadeAnimation>(
+		emojiToggle,
+		emojiToggle,
+		0.5);
+	{
+		const auto fadeTarget = Ui::CreateChild<Ui::RpWidget>(emojiToggle);
+		fadeTarget->resize(emojiToggle->size());
+		fadeTarget->paintRequest(
+		) | rpl::on_next([=](const QRect &rect) {
+			auto p = QPainter(fadeTarget);
+			if (fade->animating()) {
+				p.fillRect(fadeTarget->rect(), st::boxBg);
+			}
+			fade->paint(p);
+		}, fadeTarget->lifetime());
+		rpl::single(false) | rpl::then(
+			field->focusedChanges()
+		) | rpl::on_next([=](bool shown) {
+			crl::on_main(emojiToggle, [=] {
+				if (!emojiToggle->isVisible()) {
+					return;
+				}
+				if (shown) {
+					fade->fadeIn(st::universalDuration);
+				} else {
+					fade->fadeOut(st::universalDuration);
+				}
+			});
+		}, emojiToggle->lifetime());
+		fade->fadeOut(1);
+		fade->finish();
+	}
+
+
+	const auto outer = box->getDelegate()->outerContainer();
+	const auto allow = [](not_null<DocumentData*>) { return true; };
+	InitMessageFieldHandlers(
+		controller,
+		field,
+		Window::GifPauseReason::Layer,
+		allow);
+	Ui::Emoji::SuggestionsController::Init(
+		outer,
+		field,
+		&controller->session(),
+		Ui::Emoji::SuggestionsController::Options{
+			.suggestCustomEmoji = true,
+			.allowCustomWithoutPremium = allow,
+		});
+	const auto updateEmojiPanelGeometry = [=] {
+		const auto parent = emojiPanel->parentWidget();
+		const auto global = emojiToggle->mapToGlobal({ 0, 0 });
+		const auto local = parent->mapFromGlobal(global);
+		const auto right = local.x() + emojiToggle->width() * 3;
+		const auto isDropDown = local.y() < parent->height() / 2;
+		emojiPanel->setDropDown(isDropDown);
+		if (isDropDown) {
+			emojiPanel->moveTopRight(
+				local.y() + emojiToggle->height(),
+				right);
+		} else {
+			emojiPanel->moveBottomRight(local.y(), right);
+		}
+	};
+	rpl::combine(
+		box->sizeValue(),
+		field->geometryValue()
+	) | rpl::on_next([=](QSize outer, QRect inner) {
+		emojiToggle->moveToLeft(
+			rect::right(inner) + shift.x(),
+			inner.y() + shift.y());
+		emojiToggle->update();
+	}, emojiToggle->lifetime());
+
+	emojiToggle->installEventFilter(emojiPanel);
+	emojiToggle->addClickHandler([=] {
+		updateEmojiPanelGeometry();
+		emojiPanel->toggleAnimated();
+	});
+	const auto filterCallback = [=](not_null<QEvent*> event) {
+		if (event->type() == QEvent::Enter) {
+			updateEmojiPanelGeometry();
+		}
+		return base::EventFilterResult::Continue;
+	};
+	base::install_event_filter(emojiToggle, filterCallback);
+
+	return emojiToggle;
+}
+
+} // namespace Ui