Replaced AboutBox with generic box.

Telegram/SourceFiles/boxes/about_box.cpp

@@ -7,18 +7,16 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #include "boxes/about_box.h"
 
-#include "lang/lang_keys.h"
-#include "mainwidget.h"
-#include "mainwindow.h"
-#include "ui/boxes/confirm_box.h"
-#include "ui/widgets/buttons.h"
-#include "ui/widgets/labels.h"
-#include "ui/text/text_utilities.h"
 #include "base/platform/base_platform_info.h"
-#include "core/file_utilities.h"
-#include "core/click_handler_types.h"
-#include "core/update_checker.h"
 #include "core/application.h"
+#include "core/file_utilities.h"
+#include "core/update_checker.h"
+#include "lang/lang_keys.h"
+#include "ui/boxes/confirm_box.h"
+#include "ui/text/text_utilities.h"
+#include "ui/vertical_list.h"
+#include "ui/widgets/buttons.h"
+#include "ui/wrap/vertical_layout.h"
 #include "styles/style_layers.h"
 #include "styles/style_boxes.h"
 
@@ -57,43 +55,25 @@ rpl::producer<TextWithEntities> Text3() {
 
 } // namespace
 
-AboutBox::AboutBox(QWidget *parent)
-: _version(this, tr::lng_about_version(tr::now, lt_version, currentVersionText()), st::aboutVersionLink)
-, _text1(this, Text1(), st::aboutLabel)
-, _text2(this, Text2(), st::aboutLabel)
-, _text3(this, Text3(), st::aboutLabel) {
-}
+void AboutBox(not_null<Ui::GenericBox*> box) {
+	box->setTitle(rpl::single(u"Telegram Desktop"_q));
 
-void AboutBox::prepare() {
-	setTitle(rpl::single(u"Telegram Desktop"_q));
+	auto layout = box->verticalLayout();
 
-	addButton(tr::lng_close(), [this] { closeBox(); });
-
-	_text1->setLinksTrusted();
-	_text2->setLinksTrusted();
-	_text3->setLinksTrusted();
-
-	_version->setClickedCallback([this] { showVersionHistory(); });
-
-	setDimensions(st::aboutWidth, st::aboutTextTop + _text1->height() + st::aboutSkip + _text2->height() + st::aboutSkip + _text3->height());
-}
-
-void AboutBox::resizeEvent(QResizeEvent *e) {
-	BoxContent::resizeEvent(e);
-
-	const auto available = width()
-		- st::boxPadding.left()
-		- st::boxPadding.right();
-	_version->moveToLeft(st::boxPadding.left(), st::aboutVersionTop);
-	_text1->resizeToWidth(available);
-	_text1->moveToLeft(st::boxPadding.left(), st::aboutTextTop);
-	_text2->resizeToWidth(available);
-	_text2->moveToLeft(st::boxPadding.left(), _text1->y() + _text1->height() + st::aboutSkip);
-	_text3->resizeToWidth(available);
-	_text3->moveToLeft(st::boxPadding.left(), _text2->y() + _text2->height() + st::aboutSkip);
-}
-
-void AboutBox::showVersionHistory() {
+	const auto version = layout->add(
+		object_ptr<Ui::LinkButton>(
+			box,
+			tr::lng_about_version(
+				tr::now,
+				lt_version,
+				currentVersionText()),
+			st::aboutVersionLink),
+		QMargins(
+			st::boxRowPadding.left(),
+			-st::lineWidth * 3,
+			st::boxRowPadding.right(),
+			st::boxRowPadding.bottom()));
+	version->setClickedCallback([=] {
 		if (cRealAlphaVersion()) {
 			auto url = u"https://tdesktop.com/"_q;
 			if (Platform::IsWindows32Bit()) {
@@ -109,26 +89,39 @@ void AboutBox::showVersionHistory() {
 			} else {
 				Unexpected("Platform value.");
 			}
-		url = url.arg(u"talpha%1_%2"_q.arg(cRealAlphaVersion()).arg(Core::countAlphaVersionSignature(cRealAlphaVersion())));
+			url = url.arg(u"talpha%1_%2"_q
+				.arg(cRealAlphaVersion())
+				.arg(Core::countAlphaVersionSignature(cRealAlphaVersion())));
 
 			QGuiApplication::clipboard()->setText(url);
 
-		getDelegate()->show(
+			box->getDelegate()->show(
 				Ui::MakeInformBox(
 					"The link to the current private alpha "
-				"version of Telegram Desktop was copied to the clipboard."),
-			Ui::LayerOption::CloseOther);
+					"version of Telegram Desktop was copied "
+					"to the clipboard."));
 		} else {
 			File::OpenUrl(Core::App().changelogLink());
 		}
-}
+	});
 
-void AboutBox::keyPressEvent(QKeyEvent *e) {
-	if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
-		closeBox();
-	} else {
-		BoxContent::keyPressEvent(e);
-	}
+	Ui::AddSkip(layout, st::aboutTopSkip);
+
+	const auto addText = [&](rpl::producer<TextWithEntities> text) {
+		const auto label = layout->add(
+			object_ptr<Ui::FlatLabel>(box, std::move(text), st::aboutLabel),
+			st::boxRowPadding);
+		label->setLinksTrusted();
+		Ui::AddSkip(layout, st::aboutSkip);
+	};
+
+	addText(Text1());
+	addText(Text2());
+	addText(Text3());
+
+	box->addButton(tr::lng_close(), [=] { box->closeBox(); });
+
+	box->setWidth(st::aboutWidth);
 }
 
 QString telegramFaqLink() {

Telegram/SourceFiles/boxes/about_box.h

@@ -7,32 +7,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-#include "ui/layers/box_content.h"
+#include "ui/layers/generic_box.h"
 
-namespace Ui {
-class LinkButton;
-class FlatLabel;
-} // namespace Ui
-
-class AboutBox : public Ui::BoxContent {
-public:
-	AboutBox(QWidget*);
-
-protected:
-	void prepare() override;
-
-	void resizeEvent(QResizeEvent *e) override;
-	void keyPressEvent(QKeyEvent *e) override;
-
-private:
-	void showVersionHistory();
-
-	object_ptr<Ui::LinkButton> _version;
-	object_ptr<Ui::FlatLabel> _text1;
-	object_ptr<Ui::FlatLabel> _text2;
-	object_ptr<Ui::FlatLabel> _text3;
-
-};
+void AboutBox(not_null<Ui::GenericBox*> box);
 
 QString telegramFaqLink();
 QString currentVersionText();

Telegram/SourceFiles/boxes/boxes.style

@@ -349,7 +349,7 @@ aboutVersionLink: LinkButton(defaultLinkButton) {
 	color: windowSubTextFg;
 	overColor: windowSubTextFg;
 }
-aboutTextTop: 34px;
+aboutTopSkip: 19px;
 aboutSkip: 14px;
 aboutLabel: FlatLabel(defaultFlatLabel) {
 	minWidth: 300px;

Telegram/SourceFiles/platform/mac/main_window_mac.mm

@@ -369,7 +369,7 @@ void MainWindow::createGlobalMenu() {
 	{
 		auto callback = [=] {
 			ensureWindowShown();
-			controller().show(Box<AboutBox>());
+			controller().show(Box(AboutBox));
 		};
 		main->addAction(
 			tr::lng_mac_menu_about_telegram(

Telegram/SourceFiles/window/window_main_menu.cpp

@@ -403,7 +403,7 @@ MainMenu::MainMenu(
 	_version->setLink(
 		2,
 		std::make_shared<LambdaClickHandler>([=] {
-			controller->show(Box<AboutBox>());
+			controller->show(Box(AboutBox));
 		}));
 
 	rpl::combine(