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Printing: transfer profile to QImage if grayscale

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Signed-off-by: Gehad elrobey <gehadelrobey@gmail.com>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
This commit is contained in:
Gehad elrobey 2015-07-19 07:12:01 +02:00 • committed by Lubomir I. Ivanov
parent 1ae1a11c22
commit cea79b4e0a
1 changed files with 23 additions and 1 deletions
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22
printer.cpp
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@ -29,7 +29,29 @@ void Printer::putProfileImage(QRect profilePlaceholder, QRect viewPort, QPainter
// use the placeHolder and the viewPort position to calculate the relative position of the dive profile.
QRect pos(x, y, profilePlaceholder.width(), profilePlaceholder.height());
profile->plotDive(dive, true);
if (!printOptions->color_selected) {
QImage image(pos.width(), pos.height(), QImage::Format_ARGB32);
QPainter imgPainter(&image);
imgPainter.setRenderHint(QPainter::Antialiasing);
imgPainter.setRenderHint(QPainter::SmoothPixmapTransform);
profile->render(&imgPainter, QRect(0, 0, pos.width(), pos.height()));
imgPainter.end();
// convert QImage to grayscale before rendering
for (int i = 0; i < image.height(); i++) {
QRgb *pixel = reinterpret_cast<QRgb *>(image.scanLine(i));
QRgb *end = pixel + image.width();
for (; pixel != end; pixel++) {
int gray_val = qGray(*pixel);
*pixel = QColor(gray_val, gray_val, gray_val).rgb();
}
}
painter->drawImage(pos, image);
} else {
profile->render(painter, pos);
}
}
void Printer::render(int Pages = 0)