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Telegram/SourceFiles/boxes/max_invite_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 "boxes/max_invite_box.h"
+
+#include "api/api_invite_links.h"
+#include "apiwrap.h"
+#include "data/data_changes.h"
+#include "data/data_channel.h"
+#include "lang/lang_keys.h"
+#include "main/main_session.h"
+#include "mtproto/mtproto_config.h"
+#include "ui/layers/generic_box.h"
+#include "ui/text/text_utilities.h"
+#include "ui/toast/toast.h"
+#include "ui/painter.h"
+#include "styles/style_layers.h"
+#include "styles/style_boxes.h"
+
+#include <QtGui/QGuiApplication>
+#include <QtGui/QClipboard>
+
+namespace {
+
+TextParseOptions kInformBoxTextOptions = {
+	(TextParseLinks
+		| TextParseMultiline
+		| TextParseMarkdown), // flags
+	0, // maxw
+	0, // maxh
+	Qt::LayoutDirectionAuto, // dir
+};
+
+} // namespace
+
+MaxInviteBox::MaxInviteBox(QWidget*, not_null<ChannelData*> channel)
+: BoxContent()
+, _channel(channel)
+, _text(
+	st::boxLabelStyle,
+	tr::lng_participant_invite_sorry(
+		tr::now,
+		lt_count,
+		channel->session().serverConfig().chatSizeMax),
+	kInformBoxTextOptions,
+	(st::boxWidth
+		- st::boxPadding.left()
+		- st::defaultBox.buttonPadding.right())) {
+}
+
+void MaxInviteBox::prepare() {
+	setMouseTracking(true);
+
+	addButton(tr::lng_box_ok(), [=] { closeBox(); });
+
+	_textWidth = st::boxWidth
+		- st::boxPadding.left()
+		- st::defaultBox.buttonPadding.right();
+	_textHeight = std::min(
+		_text.countHeight(_textWidth),
+		16 * st::boxLabelStyle.lineHeight);
+	setDimensions(
+		st::boxWidth,
+		st::boxPadding.top()
+			+ _textHeight
+			+ st::boxTextFont->height
+			+ st::boxTextFont->height * 2
+			+ st::newGroupLinkPadding.bottom());
+
+	if (_channel->inviteLink().isEmpty()) {
+		_channel->session().api().requestFullPeer(_channel);
+	}
+	_channel->session().changes().peerUpdates(
+		_channel,
+		Data::PeerUpdate::Flag::InviteLinks
+	) | rpl::on_next([=] {
+		rtlupdate(_invitationLink);
+	}, lifetime());
+}
+
+void MaxInviteBox::mouseMoveEvent(QMouseEvent *e) {
+	updateSelected(e->globalPos());
+}
+
+void MaxInviteBox::mousePressEvent(QMouseEvent *e) {
+	mouseMoveEvent(e);
+	if (_linkOver) {
+		if (!_channel->inviteLink().isEmpty()) {
+			QGuiApplication::clipboard()->setText(_channel->inviteLink());
+			showToast(tr::lng_create_channel_link_copied(tr::now));
+		} else if (_channel->isFullLoaded() && !_creatingInviteLink) {
+			_creatingInviteLink = true;
+			_channel->session().api().inviteLinks().create({ _channel });
+		}
+	}
+}
+
+void MaxInviteBox::leaveEventHook(QEvent *e) {
+	updateSelected(QCursor::pos());
+}
+
+void MaxInviteBox::updateSelected(const QPoint &cursorGlobalPosition) {
+	const auto p = QPoint(mapFromGlobal(cursorGlobalPosition));
+
+	const auto linkOver = _invitationLink.contains(p);
+	if (linkOver != _linkOver) {
+		_linkOver = linkOver;
+		update();
+		setCursor(_linkOver ? style::cur_pointer : style::cur_default);
+	}
+}
+
+void MaxInviteBox::paintEvent(QPaintEvent *e) {
+	BoxContent::paintEvent(e);
+
+	Painter p(this);
+
+	// draw box title / text
+	p.setPen(st::boxTextFg);
+	_text.drawLeftElided(
+		p,
+		st::boxPadding.left(),
+		st::boxPadding.top(),
+		_textWidth,
+		width(),
+		16,
+		style::al_left);
+
+	auto option = QTextOption(style::al_left);
+	option.setWrapMode(QTextOption::WrapAnywhere);
+	p.setFont(_linkOver
+		? st::defaultInputField.style.font->underline()
+		: st::defaultInputField.style.font);
+	p.setPen(st::defaultLinkButton.color);
+	const auto inviteLinkText = _channel->inviteLink().isEmpty()
+		? tr::lng_group_invite_create(tr::now)
+		: _channel->inviteLink();
+	p.drawText(_invitationLink, inviteLinkText, option);
+}
+
+void MaxInviteBox::resizeEvent(QResizeEvent *e) {
+	BoxContent::resizeEvent(e);
+	_invitationLink = myrtlrect(
+		st::boxPadding.left(),
+		st::boxPadding.top() + _textHeight + st::boxTextFont->height,
+		width() - st::boxPadding.left() - st::boxPadding.right(),
+		2 * st::boxTextFont->height);
+}