Adding emoji in SendFilesBox and EditCaptionBox.

Telegram/SourceFiles/boxes/send_files_box.cpp

@@ -14,8 +14,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "history/history_media_types.h"
 #include "chat_helpers/message_field.h"
 #include "chat_helpers/emoji_suggestions_widget.h"
+#include "chat_helpers/tabbed_panel.h"
+#include "chat_helpers/tabbed_selector.h"
 #include "core/file_utilities.h"
 #include "core/mime_type.h"
+#include "core/event_filter.h"
 #include "ui/widgets/checkbox.h"
 #include "ui/widgets/buttons.h"
 #include "ui/widgets/input_fields.h"
@@ -23,11 +26,13 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "ui/wrap/fade_wrap.h"
 #include "ui/grouped_layout.h"
 #include "ui/text_options.h"
+#include "ui/special_buttons.h"
 #include "media/media_clip_reader.h"
 #include "window/window_controller.h"
+#include "layout.h"
 #include "styles/style_history.h"
 #include "styles/style_boxes.h"
-#include "layout.h"
+#include "styles/style_chat_helpers.h"
 
 namespace {
 
@@ -1587,11 +1592,63 @@ void SendFilesBox::setupCaption() {
 	Ui::Emoji::SuggestionsController::Init(
 		getDelegate()->outerContainer(),
 		_caption);
+
+	setupEmojiPanel();
+}
+
+void SendFilesBox::setupEmojiPanel() {
+	const auto container = getDelegate()->outerContainer();
+	_emojiPanel = base::make_unique_q<ChatHelpers::TabbedPanel>(
+		container,
+		_controller,
+		object_ptr<ChatHelpers::TabbedSelector>(
+			nullptr,
+			_controller,
+			ChatHelpers::TabbedSelector::Mode::EmojiOnly));
+	_emojiPanel->setDesiredHeightValues(
+		1.,
+		st::emojiPanMinHeight / 2,
+		st::emojiPanMinHeight);
+	_emojiPanel->hide();
+	_emojiPanel->getSelector()->emojiChosen(
+	) | rpl::start_with_next([=](EmojiPtr emoji) {
+		Ui::InsertEmojiAtCursor(_caption->textCursor(), emoji);
+	}, lifetime());
+
+	_emojiFilter.reset(Core::InstallEventFilter(
+		container,
+		[=](not_null<QEvent*> event) { return emojiFilter(event); }));
+
+	_emojiToggle.create(this, st::boxAttachEmoji);
+	_emojiToggle->installEventFilter(_emojiPanel);
+	_emojiToggle->addClickHandler([=] {
+		_emojiPanel->toggleAnimated();
+	});
+}
+
+bool SendFilesBox::emojiFilter(not_null<QEvent*> event) {
+	const auto type = event->type();
+	if (type == QEvent::Move || type == QEvent::Resize) {
+		// updateEmojiPanelGeometry uses not only container geometry, but
+		// also container children geometries that will be updated later.
+		crl::on_main(this, [=] { updateEmojiPanelGeometry(); });
+	}
+	return false;
+}
+
+void SendFilesBox::updateEmojiPanelGeometry() {
+	const auto parent = _emojiPanel->parentWidget();
+	const auto global = _emojiToggle->mapToGlobal({ 0, 0 });
+	const auto local = parent->mapFromGlobal(global);
+	_emojiPanel->moveBottomRight(
+		local.y(),
+		local.x() + _emojiToggle->width() * 3);
 }
 
 void SendFilesBox::captionResized() {
 	updateBoxSize();
 	updateControlsGeometry();
+	updateEmojiPanelGeometry();
 	update();
 }
 
@@ -1747,6 +1804,12 @@ void SendFilesBox::updateControlsGeometry() {
 			st::boxPhotoPadding.left(),
 			bottom - _caption->height());
 		bottom -= st::boxPhotoCaptionSkip + _caption->height();
+
+		_emojiToggle->moveToLeft(
+			(st::boxPhotoPadding.left()
+				+ st::sendMediaPreviewSize
+				- _emojiToggle->width()),
+			_caption->y() + st::boxAttachEmojiTop);
 	}
 	const auto pointers = {
 		_sendAlbum.data(),