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83 lines
2.3 KiB
83 lines
2.3 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum 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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cpp-ethereum 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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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file DownloadView.cpp
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* @author Gav Wood <i@gavwood.com>
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* @date 2014
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*/
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#include "DownloadView.h"
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#include <QtWidgets>
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#include <QtCore>
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#include <libethereum/DownloadMan.h>
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#include "Grapher.h"
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using namespace std;
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using namespace dev;
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using namespace dev::eth;
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DownloadView::DownloadView(QWidget* _p): QWidget(_p)
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{
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}
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void DownloadView::paintEvent(QPaintEvent*)
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{
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QPainter p(this);
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p.fillRect(rect(), Qt::white);
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if (!m_man || m_man->chainEmpty() || !m_man->subCount())
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return;
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double ratio = (double)rect().width() / rect().height();
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if (ratio < 1)
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ratio = 1 / ratio;
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double n = min(16.0, min(rect().width(), rect().height()) / ceil(sqrt(m_man->chainSize() / ratio)));
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// QSizeF area(rect().width() / floor(rect().width() / n), rect().height() / floor(rect().height() / n));
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QSizeF area(n, n);
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QPointF pos(0, 0);
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auto bg = m_man->blocksGot();
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for (unsigned i = bg.all().first, ei = bg.all().second; i < ei; ++i)
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{
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int s = -2;
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if (bg.contains(i))
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s = -1;
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else
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{
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unsigned h = 0;
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m_man->foreachSub([&](DownloadSub const& sub)
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{
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if (sub.askedContains(i))
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s = h;
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h++;
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});
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}
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unsigned dh = 360 / m_man->subCount();
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if (s == -2)
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p.fillRect(QRectF(QPointF(pos) + QPointF(3 * area.width() / 8, 3 * area.height() / 8), area / 4), Qt::black);
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else if (s == -1)
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p.fillRect(QRectF(QPointF(pos) + QPointF(1 * area.width() / 8, 1 * area.height() / 8), area * 3 / 4), Qt::black);
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else
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p.fillRect(QRectF(QPointF(pos) + QPointF(1 * area.width() / 8, 1 * area.height() / 8), area * 3 / 4), QColor::fromHsv(s * dh, 64, 128));
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pos.setX(pos.x() + n);
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if (pos.x() >= rect().width() - n)
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pos = QPoint(0, pos.y() + n);
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}
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}
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