Start new Info section (profile + shared media).

Telegram/SourceFiles/info/info_top_bar.cpp

@@ -0,0 +1,84 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop version of Telegram messaging app, see https://telegram.org
+
+Telegram Desktop is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+It is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+In addition, as a special exception, the copyright holders give permission
+to link the code of portions of this program with the OpenSSL library.
+
+Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
+Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
+*/
+#include "info/info_top_bar.h"
+
+#include "ui/widgets/buttons.h"
+#include "ui/widgets/labels.h"
+
+namespace Info {
+
+TopBar::TopBar(QWidget *parent, const style::InfoTopBar &st)
+: RpWidget(parent)
+, _st(st) {
+	setAttribute(Qt::WA_OpaquePaintEvent);
+}
+
+void TopBar::setTitle(rpl::producer<QString> &&title) {
+	_title.create(this, std::move(title), _st.title);
+}
+
+void TopBar::enableBackButton(bool enable) {
+	if (enable) {
+		_back.create(this, _st.back);
+		_back->clicks()
+			| rpl::to_stream(_backClicks)
+			| rpl::start(_lifetime);
+	} else {
+		_back.destroy();
+	}
+	if (_title) {
+		_title->setAttribute(Qt::WA_TransparentForMouseEvents, enable);
+	}
+	updateControlsGeometry(width());
+}
+
+void TopBar::pushButton(object_ptr<Ui::RpWidget> button) {
+	auto weak = Ui::AttachParentChild(this, button);
+	_buttons.push_back(std::move(button));
+	weak->widthValue()
+		| rpl::on_next([this](auto) {
+			updateControlsGeometry(width());
+		})
+		| rpl::start(_lifetime);
+}
+
+int TopBar::resizeGetHeight(int newWidth) {
+	updateControlsGeometry(newWidth);
+	return _st.height;
+}
+
+void TopBar::updateControlsGeometry(int newWidth) {
+	auto right = 0;
+	for (auto &button : _buttons) {
+		button->moveToRight(right, 0, newWidth);
+		right += button->width();
+	}
+	if (_back) {
+		_back->setGeometryToLeft(0, 0, newWidth - right, _back->height(), newWidth);
+	}
+}
+
+void TopBar::paintEvent(QPaintEvent *e) {
+	Painter p(this);
+	p.fillRect(e->rect(), _st.bg);
+}
+
+} // namespace Info