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profile: fix y-coordinate of picture thumbnails

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When changing from relative to absolute scaling of the char
elements, positioning of the picture thumbnails was broken.

To emulate the old behavior, add a function to DiveCartesianAxis,
that allows positioning with respect to the axis on the screen.

To simplify tuning of the poctuire positions, name a few
constants explicitly.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-10-26 09:40:38 +02:00 • committed by Dirk Hohndel
parent 51be326879
commit 6cc6fe4d91
3 changed files with 25 additions and 5 deletions
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17
profile-widget/profilewidget2.cpp
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@ -1150,18 +1150,25 @@ void ProfileWidget2::updateThumbnailPaintOrder()
void ProfileWidget2::calculatePictureYPositions()
{
double lastX = -1.0, lastY = 0.0;
const double yStart = 0.05; // At which depth the thumbnails start (in fraction of total depth).
const double yStep = 0.01; // Increase of depth for overlapping thumbnails (in fraction of total depth).
const double xSpace = 18.0 * profileScene->dpr; // Horizontal range in which thumbnails are supposed to be overlapping (in pixels).
const int maxDepth = 14; // Maximal depth of thumbnail stack (in thumbnails).
for (PictureEntry &e: pictures) {
// let's put the picture at the correct time, but at a fixed "depth" on the profile
// Let's put the picture at the correct time, but at a fixed "depth" on the profile
// not sure this is ideal, but it seems to look right.
double x = e.thumbnail->x();
if (x < 0.0)
continue;
double y;
if (lastX >= 0.0 && fabs(x - lastX) < 3 && lastY <= (10 + 14 * 3))
y = lastY + 3;
if (lastX >= 0.0 && fabs(x - lastX) < xSpace * profileScene->dpr && lastY <= (yStart + maxDepth * yStep) - 1e-10)
y = lastY + yStep;
else
y = 10;
y = yStart;
lastX = x;
lastY = y;
e.thumbnail->setY(y);
double yScreen = profileScene->timeAxis->screenPosition(y);
e.thumbnail->setY(yScreen);
updateDurationLine(e); // If we changed the y-position, we also have to change the duration-line.
}
updateThumbnailPaintOrder();