80 lines
2.8 KiB
C++
80 lines
2.8 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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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#include "ui/toast/toast_widget.h"
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namespace Ui {
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namespace Toast {
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namespace internal {
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namespace {
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constexpr auto kToastMaxLines = 16;
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} // namespace
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Widget::Widget(QWidget *parent, const Config &config) : TWidget(parent)
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, _multiline(config.maxWidth > 0)
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, _maxWidth((config.maxWidth > 0) ? config.maxWidth : st::toastMaxWidth)
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, _padding((config.padding.left() > 0) ? config.padding : st::toastPadding)
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, _maxTextWidth(_maxWidth - _padding.left() - _padding.right())
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, _text(_multiline ? _maxTextWidth : QFIXED_MAX) {
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TextParseOptions toastOptions = { 0, _maxTextWidth, st::toastTextStyle.font->height, Qt::LayoutDirectionAuto };
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if (_multiline) {
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toastOptions.maxh *= kToastMaxLines;
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}
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_text.setText(st::toastTextStyle, _multiline ? config.text : TextUtilities::SingleLine(config.text), toastOptions);
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setAttribute(Qt::WA_TransparentForMouseEvents);
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onParentResized();
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show();
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}
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void Widget::onParentResized() {
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auto newWidth = _maxWidth;
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accumulate_min(newWidth, _padding.left() + _text.maxWidth() + _padding.right());
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accumulate_min(newWidth, parentWidget()->width() - 2 * st::toastMinMargin);
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_textWidth = newWidth - _padding.left() - _padding.right();
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auto maxHeight = kToastMaxLines * st::toastTextStyle.font->height;
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auto textHeight = _multiline ? qMin(_text.countHeight(_textWidth), maxHeight) : _text.minHeight();
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auto newHeight = _padding.top() + textHeight + _padding.bottom();
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setGeometry((parentWidget()->width() - newWidth) / 2, (parentWidget()->height() - newHeight) / 2, newWidth, newHeight);
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}
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void Widget::setShownLevel(float64 shownLevel) {
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_shownLevel = shownLevel;
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}
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void Widget::paintEvent(QPaintEvent *e) {
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Painter p(this);
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PainterHighQualityEnabler hq(p);
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p.setOpacity(_shownLevel);
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App::roundRect(p, rect(), st::toastBg, ImageRoundRadius::Large);
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auto lines = _multiline ? kToastMaxLines : 1;
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p.setPen(st::toastFg);
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_text.drawElided(p, _padding.left(), _padding.top(), _textWidth + 1, lines);
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}
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} // namespace internal
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} // namespace Toast
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} // namespace Ui
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