tdesktop/Telegram/SourceFiles/settings/settings_scale_widget.cpp

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/*
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 "settings/settings_scale_widget.h"
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#include "styles/style_boxes.h"
#include "styles/style_settings.h"
#include "ui/widgets/checkbox.h"
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#include "lang/lang_keys.h"
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#include "storage/localstorage.h"
#include "mainwindow.h"
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#include "boxes/confirm_box.h"
#include "application.h"
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#include "ui/widgets/discrete_sliders.h"
namespace Settings {
namespace {
QString scaleLabel(DBIScale scale) {
switch (scale) {
case dbisOne: return qsl("100%");
case dbisOneAndQuarter: return qsl("125%");
case dbisOneAndHalf: return qsl("150%");
case dbisTwo: return qsl("200%");
}
return QString();
}
} // namespace
ScaleWidget::ScaleWidget(QWidget *parent, UserData *self) : BlockWidget(parent, self, lang(lng_settings_section_scale)) {
createControls();
}
void ScaleWidget::createControls() {
style::margins margin(0, 0, 0, st::settingsSmallSkip);
addChildRow(_auto, margin, lng_settings_scale_auto(lt_cur, scaleLabel(cScreenScale())), [this](bool) { onAutoChanged(); }, (cConfigScale() == dbisAuto));
addChildRow(_scale, style::margins(0, 0, 0, 0));
_scale->addSection(scaleLabel(dbisOne));
_scale->addSection(scaleLabel(dbisOneAndQuarter));
_scale->addSection(scaleLabel(dbisOneAndHalf));
_scale->addSection(scaleLabel(dbisTwo));
_scale->setActiveSectionFast(cEvalScale(cConfigScale()) - 1);
_scale->setSectionActivatedCallback([this] { scaleChanged(); });
}
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void ScaleWidget::onAutoChanged() {
auto newScale = _auto->checked() ? dbisAuto : cEvalScale(cConfigScale());
if (newScale == cScreenScale()) {
if (newScale != cScale()) {
newScale = cScale();
} else {
switch (newScale) {
case dbisOne: newScale = dbisOneAndQuarter; break;
case dbisOneAndQuarter: newScale = dbisOne; break;
case dbisOneAndHalf: newScale = dbisOneAndQuarter; break;
case dbisTwo: newScale = dbisOneAndHalf; break;
}
}
}
setScale(newScale);
}
void ScaleWidget::setScale(DBIScale newScale) {
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if (_inSetScale) return;
_inSetScale = true;
auto guard = base::scope_guard([this] { _inSetScale = false; });
if (newScale == cScreenScale()) newScale = dbisAuto;
if (newScale == dbisAuto && !_auto->checked()) {
_auto->setChecked(true);
} else if (newScale != dbisAuto && _auto->checked()) {
_auto->setChecked(false);
}
_newScale = newScale;
if (newScale == dbisAuto) newScale = cScreenScale();
if (_scale->activeSection() != newScale - 1) {
_scale->setActiveSection(newScale - 1);
}
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if (cEvalScale(newScale) != cEvalScale(cRealScale())) {
Ui::show(Box<ConfirmBox>(lang(lng_settings_need_restart), lang(lng_settings_restart_now), base::lambda_guarded(this, [this] {
cSetConfigScale(_newScale);
Local::writeSettings();
App::restart();
}), base::lambda_guarded(this, [this] {
App::CallDelayed(st::boxDuration, this, [this] {
setScale(cRealScale());
});
})));
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} else {
cSetConfigScale(newScale);
Local::writeSettings();
}
}
void ScaleWidget::scaleChanged() {
auto newScale = dbisAuto;
switch (_scale->activeSection()) {
case 0: newScale = dbisOne; break;
case 1: newScale = dbisOneAndQuarter; break;
case 2: newScale = dbisOneAndHalf; break;
case 3: newScale = dbisTwo; break;
}
setScale(newScale);
}
} // namespace Settings