def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent,
title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram", "range/multi/color",
"red")
self.add_item(self.range, z=5)
self.SIG_RANGE_CHANGED.connect(self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title("bottom", "Levels")
def start_tracking(self, filter, event):
plot = filter.plot
self.inside = False
self.active = None
self.handle = None
self.first_pos = pos = event.pos()
self.last_pos = QPoint(pos)
selected = plot.get_active_item()
distance = CONF.get("plot", "selection/distance", 6)
(nearest, nearest_dist, nearest_handle,
nearest_inside) = plot.get_nearest_object(pos, distance)
if nearest is not None:
# Is the nearest object the real deal?
if not nearest.can_select() or nearest_dist >= distance:
# Looking for the nearest object in z containing cursor position
(nearest, nearest_dist, nearest_handle,
nearest_inside) = plot.get_nearest_object_in_z(pos)
# This will unselect active item only if it's not moved afterwards:
self.unselection_pending = selected is nearest
if selected and not self.multiselection:
# An item is selected
self.active = selected
(dist, self.handle, self.inside,
other_object) = self.active.hit_test(pos)
if other_object is not None:
# e.g. LegendBoxItem: 'other_object' is the selected curve
plot.set_active_item(other_object)
return
if dist >= distance and not self.inside:
# The following allows to move together selected items by
# clicking inside any of them (instead of active item only)
other_selitems = [_it for _it in plot.get_selected_items()
if _it is not self.active and _it.can_move()]
for selitem in other_selitems:
dist, handle, inside, _other = selitem.hit_test(pos)
if dist < distance or inside:
self.inside = inside
break
else:
self.__unselect_objects(filter)
filter.set_state(self.start_state, event)
return
else:
# No item is selected
self.active = nearest
self.handle = nearest_handle
self.inside = nearest_inside
dist = nearest_dist
if nearest is not None:
plot.set_active_item(nearest)
if not nearest.selected:
if not self.multiselection:
plot.unselect_all()
plot.select_item(nearest)
# Eventually move or resize selected object:
self.__move_or_resize_object(dist, distance, event, filter)
plot.replot()
def __init__(self, parent=None):
super(LevelsHistogram, self).__init__(parent=parent, title="",
section="histogram")
self.antialiased = False
# a dict of dict : plot -> selected items -> HistogramItem
self._tracked_items = {}
self.curveparam = CurveParam(_("Curve"), icon="curve.png")
self.curveparam.read_config(CONF, "histogram", "curve")
self.histparam = HistogramParam(_("Histogram"), icon="histogram.png")
self.histparam.logscale = False
self.histparam.n_bins = 256
self.range = XRangeSelection(0, 1)
self.range_mono_color = self.range.shapeparam.sel_line.color
self.range_multi_color = CONF.get("histogram",
"range/multi/color", "red")
self.add_item(self.range, z=5)
self.connect(self, SIG_RANGE_CHANGED, self.range_changed)
self.set_active_item(self.range)
self.setMinimumHeight(80)
self.setAxisMaxMajor(self.Y_LEFT, 5)
self.setAxisMaxMinor(self.Y_LEFT, 0)
if parent is None:
self.set_axis_title('bottom', 'Levels')
def start_tracking(self, filter, event):
plot = filter.plot
self.inside = False
self.active = None
self.handle = None
self.first_pos = pos = event.pos()
self.last_pos = QPoint(pos)
selected = plot.get_active_item()
distance = CONF.get("plot", "selection/distance", 6)
(nearest, nearest_dist, nearest_handle,
nearest_inside) = plot.get_nearest_object(pos, distance)
if nearest is not None:
# Is the nearest object the real deal?
if not nearest.can_select() or nearest_dist >= distance:
# Looking for the nearest object in z containing cursor position
(nearest, nearest_dist, nearest_handle,
nearest_inside) = plot.get_nearest_object_in_z(pos)
# This will unselect active item only if it's not moved afterwards:
self.unselection_pending = selected is nearest
if selected and not self.multiselection:
# An item is selected
self.active = selected
(dist, self.handle, self.inside,
other_object) = self.active.hit_test(pos)
if other_object is not None:
# e.g. LegendBoxItem: 'other_object' is the selected curve
plot.set_active_item(other_object)
return
if dist >= distance and not self.inside:
# The following allows to move together selected items by
# clicking inside any of them (instead of active item only)
other_selitems = [
_it for _it in plot.get_selected_items()
if _it is not self.active and _it.can_move()
]
for selitem in other_selitems:
dist, handle, inside, _other = selitem.hit_test(pos)
if dist < distance or inside:
self.inside = inside
break
else:
self.__unselect_objects(filter)
filter.set_state(self.start_state, event)
return
else:
# No item is selected
self.active = nearest
self.handle = nearest_handle
self.inside = nearest_inside
dist = nearest_dist
if nearest is not None:
plot.set_active_item(nearest)
if not nearest.selected:
if not self.multiselection:
plot.unselect_all()
plot.select_item(nearest)
# Eventually move or resize selected object:
self.__move_or_resize_object(dist, distance, event, filter)
plot.replot()
