Some work about adaptive color scheme for Web UI (PR #19901) http://[316:c51a:62a3:8b9::4]/d4708/qBittorrent/src/branch/adaptive-webui
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/*
* Bittorrent Client using Qt4 and libtorrent.
* Copyright (C) 2006 Christophe Dumez
*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* In addition, as a special exception, the copyright holders give permission to
* link this program with the OpenSSL project's "OpenSSL" library (or with
* modified versions of it that use the same license as the "OpenSSL" library),
* and distribute the linked executables. You must obey the GNU General Public
* License in all respects for all of the code used other than "OpenSSL". If you
* modify file(s), you may extend this exception to your version of the file(s),
* but you are not obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*
* Contact : chris@qbittorrent.org
*/
#ifndef DOWNLOADEDPIECESBAR_H
#define DOWNLOADEDPIECESBAR_H
#include <QWidget>
#include <QPainter>
#include <QList>
#include <QPixmap>
#include <libtorrent/bitfield.hpp>
#include <math.h>
using namespace libtorrent;
#define BAR_HEIGHT 18
class DownloadedPiecesBar: public QWidget {
Q_OBJECT
private:
QPixmap pixmap;
public:
DownloadedPiecesBar(QWidget *parent): QWidget(parent) {
setFixedHeight(BAR_HEIGHT);
}
void setProgress(const bitfield &pieces, const bitfield &downloading_pieces) {
if(pieces.empty()) {
// Empty bar
QPixmap pix = QPixmap(1, 1);
pix.fill();
pixmap = pix;
} else {
const int nb_pieces = pieces.size();
// Reduce the number of pieces before creating the pixmap
// otherwise it can crash when there are too many pieces
if(nb_pieces > width()) {
const int ratio = floor(nb_pieces/(double)width());
std::vector<bool> scaled_pieces;
std::vector<bool> scaled_downloading;
for(int i=0; i<nb_pieces; i+= ratio) {
bool have = true;
for(int j=i; j<qMin(i+ratio, nb_pieces); ++j) {
if(!pieces[i]) { have = false; break; }
}
scaled_pieces.push_back(have);
if(have) {
scaled_downloading.push_back(false);
} else {
bool downloading = false;
for(int j=i; j<qMin(i+ratio, nb_pieces); ++j) {
if(downloading_pieces[i]) { downloading = true; break; }
}
scaled_downloading.push_back(downloading);
}
}
QPixmap pix = QPixmap(scaled_pieces.size(), 1);
pix.fill();
QPainter painter(&pix);
for(uint i=0; i<scaled_pieces.size(); ++i) {
if(scaled_pieces[i]) {
painter.setPen(Qt::blue);
} else {
if(scaled_downloading[i]) {
painter.setPen(Qt::yellow);
} else {
painter.setPen(Qt::white);
}
}
painter.drawPoint(i,0);
}
pixmap = pix;
} else {
QPixmap pix = QPixmap(pieces.size(), 1);
pix.fill();
QPainter painter(&pix);
for(uint i=0; i<pieces.size(); ++i) {
if(pieces[i]) {
painter.setPen(Qt::blue);
} else {
if(downloading_pieces[i]) {
painter.setPen(Qt::yellow);
} else {
painter.setPen(Qt::white);
}
}
painter.drawPoint(i,0);
}
pixmap = pix;
}
}
update();
}
void clear() {
pixmap = QPixmap();
update();
}
protected:
void paintEvent(QPaintEvent *) {
if(pixmap.isNull()) return;
QPainter painter(this);
painter.drawPixmap(rect(), pixmap);
}
};
#endif // DOWNLOADEDPIECESBAR_H