73 lines
2.6 KiB
C++
73 lines
2.6 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) 2014-2016 John Preston, https://desktop.telegram.org
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*/
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#include "stdafx.h"
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#include "ui/widgets/filled_slider.h"
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#include "styles/style_widgets.h"
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namespace Ui {
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FilledSlider::FilledSlider(QWidget *parent, const style::FilledSlider &st) : ContinuousSlider(parent)
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, _st(st) {
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}
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QRect FilledSlider::getSeekRect() const {
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return QRect(0, 0, width(), height());
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}
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float64 FilledSlider::getOverDuration() const {
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return _st.duration;
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}
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void FilledSlider::paintEvent(QPaintEvent *e) {
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Painter p(this);
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p.setPen(Qt::NoPen);
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p.setRenderHint(QPainter::HighQualityAntialiasing);
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auto masterOpacity = fadeOpacity();
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auto ms = getms();
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auto disabled = isDisabled();
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auto over = getCurrentOverFactor(ms);
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auto lineWidth = _st.lineWidth + ((_st.fullWidth - _st.lineWidth) * over);
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auto lineWidthRounded = qFloor(lineWidth);
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auto lineWidthPartial = lineWidth - lineWidthRounded;
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auto seekRect = getSeekRect();
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auto value = getCurrentValue(ms);
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auto from = seekRect.x(), mid = qRound(from + value * seekRect.width()), end = from + seekRect.width();
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if (mid > from) {
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p.setOpacity(masterOpacity);
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p.fillRect(from, height() - lineWidthRounded, (mid - from), lineWidthRounded, disabled ? _st.disabledFg : _st.activeFg);
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if (lineWidthPartial > 0.01) {
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p.setOpacity(masterOpacity * lineWidthPartial);
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p.fillRect(from, height() - lineWidthRounded - 1, (mid - from), 1, disabled ? _st.disabledFg : _st.activeFg);
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}
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}
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if (end > mid && over > 0) {
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p.setOpacity(masterOpacity * over);
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p.fillRect(mid, height() - lineWidthRounded, (end - mid), lineWidthRounded, _st.inactiveFg);
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if (lineWidthPartial > 0.01) {
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p.setOpacity(masterOpacity * over * lineWidthPartial);
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p.fillRect(mid, height() - lineWidthRounded - 1, (end - mid), 1, _st.inactiveFg);
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}
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}
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}
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} // namespace Ui
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