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PrintLayout: vectorize the table print

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Use QPicture to do that.

QPainter::drawPicture() requires offsetting the target QPoint's
Y value by two times the headingRow height.
This can be improved the hardcodding the offset when the
'pageIndexes' are calculated, but is a bit complicated.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Lubomir I. Ivanov 2014-07-25 03:50:45 +03:00 • committed by Dirk Hohndel
parent 50b4617cd4
commit 0a53449e76
1 changed files with 10 additions and 1 deletions
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11
qt-ui/printlayout.cpp
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@ -377,6 +377,7 @@ void PrintLayout::printTable()
const int passes[] = { 70, 10 };
int tableHeight = 0, lastAccIndex = 0, rowH, accH, headings;
bool isHeading = false;
int headingRowH;
for (unsigned int pass = 0; pass < sizeof(passes) / sizeof(passes[0]); pass++) {
progress = headings = accH = 0;
@ -385,6 +386,7 @@ void PrintLayout::printTable()
rowH = table.rowHeight(i);
accH += rowH;
if (isHeading) {
headingRowH = rowH;
headings += rowH;
isHeading = false;
}
@ -418,7 +420,14 @@ void PrintLayout::printTable()
QRegion region(0, pageIndexes.at(i) - 1,
table.width(),
pageIndexes.at(i + 1) - pageIndexes.at(i) + 1);
table.render(&painter, QPoint(0, 0), region);
// vectorize the table first by using QPicture
QPicture pic;
QPainter picPainter;
picPainter.begin(&pic);
table.render(&picPainter, QPoint(0, 0), region);
picPainter.end();
// for page# > 0, we need to offset the target point's Y by twice the heading row height
painter.drawPicture(QPoint(0, (i > 0 ? -(headingRowH << 1) : 0)), pic);
progress++;
emit signalProgress(done + (progress * 10) / total);
}