tdesktop/Telegram/SourceFiles/info/media/info_media_empty_widget.cpp

117 lines
3.3 KiB
C++

/*
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/media/info_media_empty_widget.h"
#include "ui/widgets/labels.h"
#include "styles/style_info.h"
#include "lang/lang_keys.h"
namespace Info {
namespace Media {
EmptyWidget::EmptyWidget(QWidget *parent)
: RpWidget(parent)
, _text(this, st::infoEmptyLabel) {
}
void EmptyWidget::setFullHeight(rpl::producer<int> fullHeightValue) {
std::move(fullHeightValue)
| rpl::start_with_next([this](int fullHeight) {
// Make icon center be on 1/3 height.
auto iconCenter = fullHeight / 3;
auto iconHeight = st::infoEmptyFile.height();
auto iconTop = iconCenter - iconHeight / 2;
_height = iconTop + st::infoEmptyIconTop;
resizeToWidth(width());
}, lifetime());
}
void EmptyWidget::setType(Type type) {
_type = type;
_icon = [&] {
switch (_type) {
case Type::Photo: return &st::infoEmptyPhoto;
case Type::Video: return &st::infoEmptyVideo;
case Type::MusicFile: return &st::infoEmptyAudio;
case Type::File: return &st::infoEmptyFile;
case Type::Link: return &st::infoEmptyLink;
case Type::VoiceFile: return &st::infoEmptyVoice;
}
Unexpected("Bad type in EmptyWidget::setType()");
}();
update();
}
void EmptyWidget::setSearchQuery(const QString &query) {
auto key = [&] {
switch (_type) {
case Type::Photo:
return lng_media_photo_empty;
case Type::Video:
return lng_media_video_empty;
case Type::MusicFile:
return query.isEmpty()
? lng_media_song_empty
: lng_media_song_empty_search;
case Type::File:
return query.isEmpty()
? lng_media_file_empty
: lng_media_file_empty_search;
case Type::Link:
return query.isEmpty()
? lng_media_link_empty
: lng_media_link_empty_search;
case Type::VoiceFile:
return lng_media_audio_empty;
}
Unexpected("Bad type in EmptyWidget::setSearchQuery()");
}();
_text->setText(lang(key));
resizeToWidth(width());
}
void EmptyWidget::paintEvent(QPaintEvent *e) {
if (!_icon) {
return;
}
Painter p(this);
auto iconLeft = (width() - _icon->width()) / 2;
auto iconTop = height() - st::infoEmptyIconTop;
_icon->paint(p, iconLeft, iconTop, width());
}
int EmptyWidget::resizeGetHeight(int newWidth) {
auto labelTop = _height - st::infoEmptyLabelTop;
auto labelWidth = newWidth - 2 * st::infoEmptyLabelSkip;
_text->resizeToNaturalWidth(labelWidth);
auto labelLeft = (newWidth - _text->width()) / 2;
_text->moveToLeft(labelLeft, labelTop, newWidth);
update();
return _height;
}
} // namespace Media
} // namespace Info