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Performance improvement for piece availability and downloaded pieces widgets

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This commit is contained in:
Christophe Dumez
2010-10-11 21:06:53 +00:00
parent 7867cf68f9
commit 67973515d5
2 changed files with 23 additions and 18 deletions
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20
src/pieceavailabilitybar.h
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@@ -60,23 +60,25 @@ public:
pixmap = pix;
} else {
// Look for maximum value
const int nb_pieces = avail.size();
const qulonglong nb_pieces = avail.size();
average = std::accumulate(avail.begin(), avail.end(), 0)/(double)nb_pieces;
// 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());
const uint w = width();
if(nb_pieces > w) {
const qulonglong ratio = floor(nb_pieces/(double)w);
std::vector<int> scaled_avail;
for(int i=0; i<nb_pieces; i+= ratio) {
int j = i;
int sum = avail[i];
scaled_avail.reserve(ceil(nb_pieces/(double)ratio));
for(qulonglong i=0; i<nb_pieces; i+= ratio) {
qulonglong j = i;
qulonglong sum = avail[i];
for(j=i+1; j<qMin(i+ratio, nb_pieces); ++j) {
sum += avail[j];
}
scaled_avail.push_back(sum/(qMin(ratio, nb_pieces-i)));
}
QPixmap pix = QPixmap(scaled_avail.size(), 1);
pix.fill();
//pix.fill();
QPainter painter(&pix);
for(qulonglong i=0; i < scaled_avail.size(); ++i) {
painter.setPen(getPieceColor(scaled_avail[i], average));
@@ -85,9 +87,9 @@ public:
pixmap = pix;
} else {
QPixmap pix = QPixmap(nb_pieces, 1);
pix.fill();
//pix.fill();
QPainter painter(&pix);
for(int i=0; i < nb_pieces; ++i) {
for(qulonglong i=0; i < nb_pieces; ++i) {
painter.setPen(getPieceColor(avail[i], average));
painter.drawPoint(i,0);
}