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Dive pictures: Don't plot pictures twice when changing current dive

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In MainWindow::current_dive_changed() first plotDive() is called,
which replots all the pictures by calling plotPictures(). This
is pointess, because it plots the pictures of the previous dive.

Then, updateDiveInfo() is called, which resets the dive pictures
and automatically replots them. Thus, switching between dives
both with hundreds of pictures is way slower than necessary.

Switching the plotDive() and updateDiveInfo() calls doesn't work.
The reason is not 100% clear, but it doesn't make sense to plot
pictures of the new dive as long as the profile still shows the
old dive anyway.

As a quick-fix, add a flag to plotDive(), which tells the function
to clear the pictures list instead of redrawing it.
Ultimately, plotDive() should probably be split in two functions.
One for the callers who update the pictures themselves and one
for the others.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2018-05-16 15:25:57 +02:00 • committed by Dirk Hohndel
parent f54268e527
commit 45395fd466
4 changed files with 11 additions and 11 deletions
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4
desktop-widgets/printer.cpp
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@ -41,7 +41,7 @@ void Printer::putProfileImage(QRect profilePlaceholder, QRect viewPort, QPainter
int y = profilePlaceholder.y() - viewPort.y();
// 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);
profile->plotDive(dive, true, true);
if (!printOptions->color_selected) {
QImage image(pos.width(), pos.height(), QImage::Format_ARGB32);
@ -204,7 +204,7 @@ void Printer::render(int Pages = 0)
prefs.animation_speed = animationOriginal;
//replot the dive after returning the settings
profile->plotDive(0, true);
profile->plotDive(0, true, true);
}
//value: ranges from 0 : 100 and shows the progress of the templating engine