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Code Issues 5 Pull Requests 7 Packages Projects Releases Wiki Activity

Use label anchor

fsp_feeds
Tyler Goodlet 2021-07-16 11:40:56 -04:00
parent 791fd23524
commit 3aab6d67e9
2 changed files with 22 additions and 28 deletions
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2
piker/ui/_label.py
View File

@ -225,6 +225,8 @@ class Label:
self.vb.scene().removeItem(self.txt) self.vb.scene().removeItem(self.txt)
# anchoring helper funcs
def vbr_left(label) -> Callable[..., float]: def vbr_left(label) -> Callable[..., float]:
"""Return a closure which gives the scene x-coordinate for the """Return a closure which gives the scene x-coordinate for the
leftmost point of the containing view box. leftmost point of the containing view box.

48
piker/ui/_lines.py
View File

@ -360,6 +360,8 @@ class LevelLine(pg.InfiniteLine):
self._marker.setPos( self._marker.setPos(
QPointF(marker_right, self.scene_y()) QPointF(marker_right, self.scene_y())
) )
# TODO: make this label update part of a scene-aware-marker
# composed annotation
self._marker.label.update() self._marker.label.update()
elif not self.use_marker_margin: elif not self.use_marker_margin:
@ -763,9 +765,7 @@ def position_line(
# monkey-cache height for sizing on pp nav-hub # monkey-cache height for sizing on pp nav-hub
arrow_path._height = path_br.height() arrow_path._height = path_br.height()
arrow_path._width = path_br.width() arrow_path._width = path_br.width()
# wp = QPointF(w, w)
marker_label = Label( marker_label = Label(
view=vb, view=vb,
@ -775,17 +775,18 @@ def position_line(
) )
arrow_path.label = marker_label arrow_path.label = marker_label
# def arrow_br(): def arrow_tr():
# # get actual arrow graphics path # get actual arrow graphics path
# path_br = arrow_path.mapToScene( path_br = arrow_path.mapToScene(
# arrow_path.path() arrow_path.path()
# ).boundingRect() ).boundingRect()
# # vb.locate(arrow_path) #, children=True) # vb.locate(arrow_path) #, children=True)
# return path_br.bottomRight() - QPointF(0, marker_label.h / 2) return path_br.topRight() - QPointF(0, marker_label.h / 3)
# marker_label.scene_anchor = arrow_br
marker_label.scene_anchor = arrow_tr
line._labels.append(marker_label) line._labels.append(marker_label)
@ -807,13 +808,9 @@ def position_line(
ymn, ymx = vr[1] ymn, ymx = vr[1]
level = line.value() level = line.value()
path = line._marker marker = line._marker
label = path.label label = marker.label
# get actual arrow-marker graphics path
path_br = path.mapToScene(
path.path()
).boundingRect()
# provide "nav hub" like indicator for where # provide "nav hub" like indicator for where
# the position is on the y-dimension # the position is on the y-dimension
@ -821,33 +818,28 @@ def position_line(
_, marker_right, _ = line.marker_right_points() _, marker_right, _ = line.marker_right_points()
if level > ymx: # pin to top of view if level > ymx: # pin to top of view
path.setPos( marker.setPos(
QPointF( QPointF(
marker_right, marker_right,
path._height/3, marker._height/3,
) )
) )
elif level < ymn: # pin to bottom of view elif level < ymn: # pin to bottom of view
path.setPos( marker.setPos(
QPointF( QPointF(
marker_right, marker_right,
vb.height() - 4/3*path._height, vb.height() - 4/3*marker._height,
) )
) )
# adjust marker labels to be above bottom of view
label.txt.setPos(path_br.topRight() - QPointF(0, label.h / 2))
else: else:
# pp line is viewable so show marker normally # pp line is viewable so show marker normally
line._marker.show() marker.update()
# place label at bottom right of pp marker # re-anchor label (i.e. trigger call of ``arrow_tr()`` from above
label.txt.setPos(path_br.bottomRight() - QPointF(0, label.h / 2)) label.update()
line.show_labels()
vb.sigRangeChanged.connect(update_pp_nav) vb.sigRangeChanged.connect(update_pp_nav)