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profile: reimplement DivePercentageItem

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The tissue percentages were realized as 16 independent polygons.
That didn't work at all with the new absolute scaling.

Reimplement the item and blast it onto a pixmap. Not only is
this artifact-free, it also should (hopefully) be quite a bit
more efficient than painting numerous lines.

In contrast to the old code, this does access the plot_info
structure directly instead of using the model. Not so much
for performance reason, but rather to make things more robust:
We have a strongly typed language. Why would we shoehorn data
through the weakly typed QVariant and mess with wierd
index-arithmetics. Makes no sense to me. Qt-model have to
be used for interfacing with Qt. They are terrible for
intra-application data transfer.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2021-08-29 22:13:26 +02:00 • committed by Dirk Hohndel
parent 24cf6709e3
commit 505e4e47eb
10 changed files with 177 additions and 89 deletions
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Subsurface-mobile.pro
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@ -168,6 +168,7 @@ SOURCES += subsurface-mobile-main.cpp \
profile-widget/qmlprofile.cpp \
profile-widget/divecartesianaxis.cpp \
profile-widget/diveeventitem.cpp \
profile-widget/divepercentageitem.cpp \
profile-widget/diveprofileitem.cpp \
profile-widget/profilescene.cpp \
profile-widget/animationfunctions.cpp \
@ -321,6 +322,7 @@ HEADERS += \
qt-models/filterconstraintmodel.h \
qt-models/filterpresetmodel.h \
profile-widget/qmlprofile.h \
profile-widget/divepercentageitem.h \
profile-widget/diveprofileitem.h \
profile-widget/profilescene.h \
profile-widget/diveeventitem.h \