init

Telegram/SourceFiles/profile/profile_back_button.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 "profile/profile_back_button.h"
+
+//#include "history/view/history_view_top_bar_widget.h"
+#include "main/main_session.h"
+#include "data/data_session.h"
+#include "ui/painter.h"
+#include "styles/style_widgets.h"
+#include "styles/style_window.h"
+#include "styles/style_profile.h"
+#include "styles/style_info.h"
+
+namespace Profile {
+
+BackButton::BackButton(
+	QWidget *parent,
+	not_null<Main::Session*> session,
+	const QString &text,
+	rpl::producer<bool> oneColumnValue)
+: Ui::AbstractButton(parent)
+, _session(session)
+, _text(text) {
+	setCursor(style::cur_pointer);
+
+	std::move(
+		oneColumnValue
+	) | rpl::on_next([=](bool oneColumn) {
+		if (!oneColumn) {
+			_unreadBadgeLifetime.destroy();
+		} else if (!_unreadBadgeLifetime) {
+			_session->data().unreadBadgeChanges(
+			) | rpl::on_next([=] {
+				rtlupdate(
+					0,
+					0,
+					st::titleUnreadCounterRight,
+					st::titleUnreadCounterTop);
+			}, _unreadBadgeLifetime);
+		}
+	}, lifetime());
+}
+
+void BackButton::setText(const QString &text) {
+	_text = text;
+	update();
+}
+
+int BackButton::resizeGetHeight(int newWidth) {
+	return st::profileTopBarHeight;
+}
+
+void BackButton::paintEvent(QPaintEvent *e) {
+	Painter p(this);
+
+	p.fillRect(e->rect(), st::profileBg);
+	st::topBarBack.paint(p, (st::topBarArrowPadding.left() - st::topBarBack.width()) / 2, (st::topBarHeight - st::topBarBack.height()) / 2, width());
+
+	p.setFont(st::topBarButton.style.font);
+	p.setPen(st::topBarButton.textFg);
+	p.drawTextLeft(st::topBarArrowPadding.left(), st::topBarButton.padding.top() + st::topBarButton.textTop, width(), _text);
+}
+
+void BackButton::onStateChanged(State was, StateChangeSource source) {
+	if (isDown() && !(was & StateFlag::Down)) {
+		clicked(Qt::KeyboardModifiers(), Qt::LeftButton);
+	}
+}
+
+} // namespace Profile