127 lines
3.4 KiB
C++
127 lines
3.4 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014 John Preston, https://desktop.telegram.org
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*/
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#include "stdafx.h"
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#include "lang.h"
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#include "aboutbox.h"
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#include "mainwidget.h"
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#include "window.h"
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AboutBox::AboutBox() :
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_done(this, lang(lng_about_done), st::aboutCloseButton),
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_version(this, qsl("[a href=\"https://desktop.telegram.org/#changelog\"]") + textClean(lng_about_version(lt_version, QString::fromWCharArray(AppVersionStr))) + qsl("[/a]"), st::aboutVersion, st::defaultTextStyle),
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_text(this, lang(lng_about_text), st::aboutLabel, st::aboutTextStyle),
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_hiding(false), a_opacity(0, 1) {
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_width = st::aboutWidth;
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_height = st::aboutHeight;
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_version.move(0, st::aboutVersionTop);
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_text.move(0, st::aboutTextTop);
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_headerWidth = st::aboutHeaderFont->m.width(qsl("Telegram "));
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_subheaderWidth = st::aboutSubheaderFont->m.width(qsl("Desktop"));
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_done.move(0, _height - _done.height());
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connect(&_done, SIGNAL(clicked()), this, SLOT(onClose()));
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resize(_width, _height);
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showAll();
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_cache = myGrab(this, rect());
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hideAll();
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}
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void AboutBox::hideAll() {
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_done.hide();
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_version.hide();
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_text.hide();
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}
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void AboutBox::showAll() {
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_done.show();
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_version.show();
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_text.show();
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}
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void AboutBox::keyPressEvent(QKeyEvent *e) {
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if (e->key() == Qt::Key_Enter || e->key() == Qt::Key_Return) {
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onClose();
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} else if (e->key() == Qt::Key_Escape) {
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onClose();
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}
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}
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void AboutBox::parentResized() {
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QSize s = parentWidget()->size();
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setGeometry((s.width() - _width) / 2, (s.height() - _height) / 2, _width, _height);
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update();
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}
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void AboutBox::paintEvent(QPaintEvent *e) {
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QPainter p(this);
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if (_cache.isNull()) {
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if (!_hiding || a_opacity.current() > 0.01) {
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// fill bg
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p.fillRect(0, 0, _width, _height, st::boxBG->b);
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p.drawPixmap(QPoint((_width - st::aboutIcon.pxWidth()) / 2, st::aboutIconTop), App::sprite(), st::aboutIcon);
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p.setPen(st::black->p);
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p.setFont(st::aboutHeaderFont->f);
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p.drawText((_width - (_headerWidth + _subheaderWidth)) / 2, st::aboutHeaderTop + st::aboutHeaderFont->ascent, qsl("Telegram"));
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p.setFont(st::aboutSubheaderFont->f);
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p.drawText((_width - (_headerWidth + _subheaderWidth)) / 2 + _headerWidth, st::aboutHeaderTop + st::aboutSubheaderFont->ascent, qsl("Desktop"));
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}
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} else {
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p.setOpacity(a_opacity.current());
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p.drawPixmap(0, 0, _cache);
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}
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}
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void AboutBox::animStep(float64 ms) {
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if (ms >= 1) {
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a_opacity.finish();
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_cache = QPixmap();
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if (!_hiding) {
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showAll();
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setFocus();
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}
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} else {
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a_opacity.update(ms, anim::linear);
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}
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update();
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}
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void AboutBox::onClose() {
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emit closed();
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}
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void AboutBox::startHide() {
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_hiding = true;
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if (_cache.isNull()) {
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_cache = myGrab(this, rect());
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hideAll();
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}
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a_opacity.start(0);
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}
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AboutBox::~AboutBox() {
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}
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