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Telegram/SourceFiles/ui/boxes/edit_birthday_box.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/boxes/edit_birthday_box.h"
+
+#include "base/event_filter.h"
+#include "data/data_birthday.h"
+#include "lang/lang_keys.h"
+#include "ui/layers/generic_box.h"
+#include "ui/widgets/vertical_drum_picker.h"
+#include "ui/ui_utility.h"
+#include "styles/style_layers.h"
+#include "styles/style_settings.h"
+
+#include <QtCore/QDate>
+
+namespace Ui {
+
+class GenericBox;
+
+void EditBirthdayBox(
+		not_null<Ui::GenericBox*> box,
+		Data::Birthday current,
+		Fn<void(Data::Birthday)> save,
+		EditBirthdayType type) {
+	box->setWidth(st::boxWideWidth);
+	const auto content = box->addRow(object_ptr<Ui::FixedHeightWidget>(
+		box,
+		st::settingsWorkingHoursPicker));
+
+	const auto font = st::boxTextFont;
+	const auto itemHeight = st::settingsWorkingHoursPickerItemHeight;
+	const auto picker = [=](
+			int count,
+			int startIndex,
+			Fn<void(QPainter &p, QRectF rect, int index)> paint) {
+		return Ui::CreateChild<Ui::VerticalDrumPicker>(
+			content,
+			Ui::VerticalDrumPicker::DefaultPaintCallback(
+				font,
+				itemHeight,
+				paint),
+			count,
+			itemHeight,
+			startIndex);
+	};
+
+	const auto nowDate = QDate::currentDate();
+	const auto nowYear = nowDate.year();
+	const auto nowMonth = nowDate.month();
+	const auto nowDay = nowDate.day();
+	const auto now = Data::Birthday(nowDay, nowMonth, nowYear);
+	const auto max = current.year() ? std::max(now, current) : now;
+	const auto maxYear = max.year();
+	const auto minYear = Data::Birthday::kYearMin;
+	const auto yearsCount = (maxYear - minYear + 2); // Last - not set.
+	const auto yearsStartIndex = current.year()
+		? (current.year() - minYear)
+		: (yearsCount - 1);
+	const auto yearsPaint = [=](QPainter &p, QRectF rect, int index) {
+		p.drawText(
+			rect,
+			(index < yearsCount - 1
+				? QString::number(minYear + index)
+				: QString::fromUtf8("\xe2\x80\x94")),
+			style::al_center);
+	};
+	const auto years = picker(yearsCount, yearsStartIndex, yearsPaint);
+
+	struct State {
+		rpl::variable<Ui::VerticalDrumPicker*> months;
+		rpl::variable<Ui::VerticalDrumPicker*> days;
+	};
+	const auto state = content->lifetime().make_state<State>();
+
+	// years->value() is valid only after size is set.
+	rpl::combine(
+		content->sizeValue(),
+		state->months.value(),
+		state->days.value()
+	) | rpl::on_next([=](
+			QSize s,
+			Ui::VerticalDrumPicker *months,
+			Ui::VerticalDrumPicker *days) {
+		const auto half = s.width() / 2;
+		years->setGeometry(half * 3 / 2, 0, half / 2, s.height());
+		if (months) {
+			months->setGeometry(half / 2, 0, half, s.height());
+		}
+		if (days) {
+			days->setGeometry(0, 0, half / 2, s.height());
+		}
+	}, content->lifetime());
+
+	Ui::SendPendingMoveResizeEvents(years);
+
+	years->value() | rpl::on_next([=](int yearsIndex) {
+		const auto year = (yearsIndex == yearsCount - 1)
+			? 0
+			: minYear + yearsIndex;
+		const auto monthsCount = (year == maxYear)
+			? max.month()
+			: 12;
+		const auto monthsStartIndex = std::clamp(
+			(state->months.current()
+				? state->months.current()->index()
+				: current.month()
+				? (current.month() - 1)
+				: (now.month() - 1)),
+			0,
+			monthsCount - 1);
+		const auto monthsPaint = [=](QPainter &p, QRectF rect, int index) {
+			p.drawText(
+				rect,
+				Lang::Month(index + 1)(tr::now),
+				style::al_center);
+		};
+		const auto updated = picker(
+			monthsCount,
+			monthsStartIndex,
+			monthsPaint);
+		delete state->months.current();
+		state->months = updated;
+		state->months.current()->show();
+	}, years->lifetime());
+
+	Ui::SendPendingMoveResizeEvents(state->months.current());
+
+	state->months.value() | rpl::map([=](Ui::VerticalDrumPicker *picker) {
+		return picker ? picker->value() : rpl::single(current.month()
+			? (current.month() - 1)
+			: (now.month() - 1));
+	}) | rpl::flatten_latest() | rpl::on_next([=](int monthIndex) {
+		const auto month = monthIndex + 1;
+		const auto yearsIndex = years->index();
+		const auto year = (yearsIndex == yearsCount - 1)
+			? 0
+			: minYear + yearsIndex;
+		const auto daysCount = (year == maxYear && month == max.month())
+			? max.day()
+			: (month == 2)
+			? ((!year || (!(year % 4) && ((year % 100) || !(year % 400))))
+				? 29
+				: 28)
+			: ((month == 4) || (month == 6) || (month == 9) || (month == 11))
+			? 30
+			: 31;
+		const auto daysStartIndex = std::clamp(
+			(state->days.current()
+				? state->days.current()->index()
+				: current.day()
+				? (current.day() - 1)
+				: (now.day() - 1)),
+			0,
+			daysCount - 1);
+		const auto daysPaint = [=](QPainter &p, QRectF rect, int index) {
+			p.drawText(rect, QString::number(index + 1), style::al_center);
+		};
+		const auto updated = picker(
+			daysCount,
+			daysStartIndex,
+			daysPaint);
+		delete state->days.current();
+		state->days = updated;
+		state->days.current()->show();
+	}, years->lifetime());
+
+	content->paintRequest(
+	) | rpl::on_next([=](const QRect &r) {
+		auto p = QPainter(content);
+
+		p.fillRect(r, Qt::transparent);
+
+		const auto lineRect = QRect(
+			0,
+			content->height() / 2,
+			content->width(),
+			st::defaultInputField.borderActive);
+		p.fillRect(lineRect.translated(0, itemHeight / 2), st::activeLineFg);
+		p.fillRect(lineRect.translated(0, -itemHeight / 2), st::activeLineFg);
+	}, content->lifetime());
+
+	base::install_event_filter(box, [=](not_null<QEvent*> e) {
+		if (e->type() == QEvent::KeyPress) {
+			years->handleKeyEvent(static_cast<QKeyEvent*>(e.get()));
+		}
+		return base::EventFilterResult::Continue;
+	});
+
+	auto confirmText = (type == EditBirthdayType::Suggest)
+		? tr::lng_suggest_birthday_box_confirm()
+		: tr::lng_settings_save();
+	box->addButton(std::move(confirmText), [=] {
+		const auto result = Data::Birthday(
+			state->days.current()->index() + 1,
+			state->months.current()->index() + 1,
+			((years->index() == yearsCount - 1)
+				? 0
+				: minYear + years->index()));
+		box->closeBox();
+		save(result);
+	});
+	box->addButton(tr::lng_cancel(), [=] {
+		box->closeBox();
+	});
+	if (current && type == EditBirthdayType::Edit) {
+		box->addLeftButton(tr::lng_settings_birthday_reset(), [=] {
+			box->closeBox();
+			save(Data::Birthday());
+		});
+	}
+}
+
+} // namespace Ui