/usr/lib/python3/dist-packages/ginga/rv/plugins/Cuts.py is in python3-ginga 2.6.1-2.
This file is owned by root:root, with mode 0o644.
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# Cuts.py -- Cuts plugin for Ginga reference viewer
#
# This is open-source software licensed under a BSD license.
# Please see the file LICENSE.txt for details.
#
import numpy
from ginga.gw import Widgets, Plot
from ginga import GingaPlugin, colors
from ginga.util.six.moves import map, zip
from ginga.canvas.coordmap import OffsetMapper
from ginga.util import plots
# default cut colors
cut_colors = ['magenta', 'skyblue2', 'chartreuse2', 'cyan', 'pink',
'burlywood2', 'yellow3', 'turquoise', 'coral1', 'mediumpurple2']
class Cuts(GingaPlugin.LocalPlugin):
"""
A plugin for generating a plot of the values along a line or path.
There are four kinds of cuts available: line, path, freepath and
beziercurve:
- The 'line' cut is a straight line between two points.
- The 'path' cut is drawn like an open polygon, with straight segments
in-between.
- The 'freepath' cut is like a path cut, but drawn using a free-form
stroke following the cursor movement.
- The 'beziercurve' path is a cubic Bezier curve.
Multiple cuts can be plotted.
Drawing Cuts
------------
The New Cut Type menu chooses what kind of cut you are going to draw.
Choose "New Cut" from the Cut dropdown menu if you want to draw a
new cut. Otherwise, if a particular named cut is selected then that
will be replaced by any newly drawn cut.
While drawing a path or beziercurve cut, press 'v' to add a vertex,
or 'z' to remove the last vertex added.
Keyboard Shortcuts
------------------
While hovering the cursor, press 'h' for a full horizontal cut and
'j' for a full vertical cut.
Deleting Cuts
-------------
To delete a cut select its name from the Cut dropdown and click the
Delete button. To delete all cuts press "Delete All".
Editing Cuts
------------
Using the edit canvas function it is possible to add new vertexes to
an existing path, and to move vertexes around. Click the "Edit"
radio button to put the canvas in edit mode. If a cut is not
automatically selected you can now select the line, path or curve by
clicking on it, which should enable the control points at the ends or
vertices--you can drag these around. To add a new vertex to a path,
hover the cursor carefully on the line where you want the new vertex
and press 'v'. To get rid of a vertex, hover the cursor over it and
press 'z'.
You will notice one extra control point for most objects, which has
a center of a different color--this is a movement control point for
moving the entire object around the image when in edit mode.
Changing Width of Cuts
----------------------
The width of 'line' cuts can be changed using the "Width Type" menu:
- "none" indicates a cut of zero radius; i.e. only showing the pixel
values along the line
- "x" will plot the sum of values along the X axis orthoginal to the
cut.
- "y" will plot the sum of values along the Y axis orthoginal to the
cut.
- "perpendicular" will plot the sum of values along an axis perpendicular
to the cut.
The "Width radius" controls the width of the orthoginal summation by
an amount on either side of the cut--1 would be 3 pixels, 2 would be 5
pixels, etc.
"""
def __init__(self, fv, fitsimage):
# superclass defines some variables for us, like logger
super(Cuts, self).__init__(fv, fitsimage)
self.layertag = 'cuts-canvas'
self._new_cut = 'New Cut'
self.cutstag = self._new_cut
self.tags = [self._new_cut]
self.count = 0
self.cuttypes = ['line', 'path', 'freepath', 'beziercurve']
self.cuttype = 'line'
self.save_enabled = False
# for 3D Slit functionality
self.transpose_enabled = False
self.selected_axis = None
self.hbox_axes = None
# For collecting data orthogonal to the cut
self.widthtypes = ['none', 'x', 'y', 'perpendicular']
self.widthtype = 'none'
self.width_radius = 5
self.tine_spacing_px = 100
# get Cuts preferences
prefs = self.fv.get_preferences()
self.settings = prefs.createCategory('plugin_Cuts')
self.settings.addDefaults(select_new_cut=True, draw_then_move=True,
label_cuts=True, colors=cut_colors,
drag_update=False,
show_cuts_legend=False, enable_slit=False)
self.settings.load(onError='silent')
self.colors = self.settings.get('colors', cut_colors)
self.dc = fv.get_draw_classes()
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.enable_edit(True)
canvas.set_drawtype('line', color='cyan', linestyle='dash')
canvas.set_callback('draw-event', self.draw_cb)
canvas.set_callback('edit-event', self.edit_cb)
canvas.add_draw_mode('move', down=self.buttondown_cb,
move=self.motion_cb, up=self.buttonup_cb,
key=self.keydown)
canvas.set_draw_mode('draw')
canvas.register_for_cursor_drawing(self.fitsimage)
#canvas.set_callback('key-press', self.keydown)
canvas.set_surface(self.fitsimage)
self.canvas = canvas
self.use_slit = self.settings.get('enable_slit', True)
self.cuts_image = None
self.gui_up = False
def build_gui(self, container):
top = Widgets.VBox()
top.set_border_width(4)
# Make the cuts plot
vbox, sw, orientation = Widgets.get_oriented_box(container)
vbox.set_margins(4, 4, 4, 4)
vbox.set_spacing(2)
msg_font = self.fv.get_font("sansFont", 12)
tw = Widgets.TextArea(wrap=True, editable=False)
tw.set_font(msg_font)
self.tw = tw
fr = Widgets.Expander("Instructions")
fr.set_widget(tw)
vbox.add_widget(fr, stretch=0)
# Add Tab Widget
nb = Widgets.TabWidget(tabpos='top')
vbox.add_widget(nb, stretch=1)
self.cuts_plot = plots.CutsPlot(logger=self.logger,
width=400, height=400)
self.plot = Plot.PlotWidget(self.cuts_plot)
self.plot.resize(400, 400)
ax = self.cuts_plot.add_axis()
ax.grid(True)
self.slit_plot = plots.Plot(logger=self.logger,
width=400, height=400)
self.slit_plot.add_axis(axisbg='black')
self.plot2 = Plot.PlotWidget(self.slit_plot)
self.plot2.resize(400, 400)
captions = (('Cut:', 'label', 'Cut', 'combobox',
'New Cut Type:', 'label', 'Cut Type', 'combobox'),
('Delete Cut', 'button', 'Delete All', 'button'),
('Save', 'button'),
)
w, b = Widgets.build_info(captions, orientation=orientation)
self.w.update(b)
# control for selecting a cut
combobox = b.cut
for tag in self.tags:
combobox.append_text(tag)
combobox.show_text(self.cutstag)
combobox.add_callback('activated', self.cut_select_cb)
self.w.cuts = combobox
combobox.set_tooltip("Select a cut to redraw or delete")
# control for selecting cut type
combobox = b.cut_type
for cuttype in self.cuttypes:
combobox.append_text(cuttype)
self.w.cuts_type = combobox
index = self.cuttypes.index(self.cuttype)
combobox.set_index(index)
combobox.add_callback('activated', self.set_cutsdrawtype_cb)
combobox.set_tooltip("Choose the cut type to draw")
self.save_cuts = b.save
self.save_cuts.set_tooltip("Save cuts plot and data")
self.save_cuts.add_callback('activated',
lambda w: self.save_cb(mode='cuts'))
self.save_cuts.set_enabled(self.save_enabled)
btn = b.delete_cut
btn.add_callback('activated', self.delete_cut_cb)
btn.set_tooltip("Delete selected cut")
btn = b.delete_all
btn.add_callback('activated', self.delete_all_cb)
btn.set_tooltip("Clear all cuts")
vbox2 = Widgets.VBox()
vbox2.add_widget(w, stretch=0)
exp = Widgets.Expander("Cut Width")
captions = (('Width Type:', 'label', 'Width Type', 'combobox',
'Width radius:', 'label', 'Width radius', 'spinbutton'),
)
w, b = Widgets.build_info(captions, orientation=orientation)
self.w.update(b)
# control for selecting width cut type
combobox = b.width_type
for atype in self.widthtypes:
combobox.append_text(atype)
index = self.widthtypes.index(self.widthtype)
combobox.set_index(index)
combobox.add_callback('activated', self.set_width_type_cb)
combobox.set_tooltip("Direction of summation orthogonal to cut")
sb = b.width_radius
sb.add_callback('value-changed', self.width_radius_changed_cb)
sb.set_tooltip("Radius of cut width")
sb.set_limits(1, 100)
sb.set_value(self.width_radius)
fr = Widgets.Frame()
fr.set_widget(w)
exp.set_widget(fr)
vbox2.add_widget(exp, stretch=0)
mode = self.canvas.get_draw_mode()
hbox = Widgets.HBox()
btn1 = Widgets.RadioButton("Move")
btn1.set_state(mode == 'move')
btn1.add_callback('activated',
lambda w, val: self.set_mode_cb('move', val))
btn1.set_tooltip("Choose this to position cuts")
self.w.btn_move = btn1
hbox.add_widget(btn1)
btn2 = Widgets.RadioButton("Draw", group=btn1)
btn2.set_state(mode == 'draw')
btn2.add_callback('activated',
lambda w, val: self.set_mode_cb('draw', val))
btn2.set_tooltip("Choose this to draw a new or replacement cut")
self.w.btn_draw = btn2
hbox.add_widget(btn2)
btn3 = Widgets.RadioButton("Edit", group=btn1)
btn3.set_state(mode == 'edit')
btn3.add_callback('activated',
lambda w, val: self.set_mode_cb('edit', val))
btn3.set_tooltip("Choose this to edit a cut")
self.w.btn_edit = btn3
hbox.add_widget(btn3)
hbox.add_widget(Widgets.Label(''), stretch=1)
vbox2.add_widget(hbox, stretch=0)
vbox2.add_widget(Widgets.Label(''), stretch=1)
vbox.add_widget(vbox2, stretch=0)
# Add Cuts plot to its tab
vbox_cuts = Widgets.VBox()
vbox_cuts.add_widget(self.plot, stretch=1)
nb.add_widget(vbox_cuts, title="Cuts")
if self.use_slit:
captions = (("Transpose Plot", 'checkbutton', "Save", 'button'),
)
w, b = Widgets.build_info(captions, orientation=orientation)
self.w.update(b)
self.t_btn = b.transpose_plot
self.t_btn.set_tooltip("Flip the plot")
self.t_btn.set_state(self.transpose_enabled)
self.t_btn.add_callback('activated', self.transpose_plot)
self.save_slit = b.save
self.save_slit.set_tooltip("Save slit plot and data")
self.save_slit.add_callback('activated',
lambda w: self.save_cb(mode='slit'))
self.save_slit.set_enabled(self.save_enabled)
# Add frame to hold the slit controls
fr = Widgets.Frame("Axes controls")
self.hbox_axes = Widgets.HBox()
self.hbox_axes.set_border_width(4)
self.hbox_axes.set_spacing(1)
fr.set_widget(self.hbox_axes)
# Add Slit plot and controls to its tab
vbox_slit = Widgets.VBox()
vbox_slit.add_widget(self.plot2, stretch=1)
vbox_slit.add_widget(w)
vbox_slit.add_widget(fr)
nb.add_widget(vbox_slit, title="Slit")
top.add_widget(sw, stretch=1)
btns = Widgets.HBox()
btns.set_border_width(4)
btns.set_spacing(3)
btn = Widgets.Button("Close")
btn.add_callback('activated', lambda w: self.close())
btns.add_widget(btn, stretch=0)
btns.add_widget(Widgets.Label(''), stretch=1)
top.add_widget(btns, stretch=0)
container.add_widget(top, stretch=1)
self.select_cut(self.cutstag)
self.gui_up = True
if self.use_slit:
self.build_axes()
def build_axes(self):
self.selected_axis = None
if (not self.gui_up) or (self.hbox_axes is None):
return
self.hbox_axes.remove_all()
image = self.fitsimage.get_image()
if image is not None:
# Add Checkbox widgets
# `image.naxispath` returns only mdim axes
for i in range(1, len(image.naxispath)+3):
chkbox = Widgets.CheckBox('NAXIS%d' % i)
self.hbox_axes.add_widget(chkbox)
# Disable axes 1,2
if i < 3:
chkbox.set_enabled(False)
continue
# Add callback
self.axes_callback_handler(chkbox, i)
self.redraw_slit('clear')
def axes_callback_handler(self, chkbox, pos):
chkbox.add_callback('activated',
lambda w, tf: self.axis_toggle_cb(w, tf, pos))
def instructions(self):
self.tw.set_text("""When drawing a path or Bezier cut, press 'v' to add a vertex.
Keyboard shortcuts: press 'h' for a full horizontal cut and 'j' for a full vertical cut.""")
def select_cut(self, tag):
self.cutstag = tag
self.w.cuts.show_text(tag)
if (tag == self._new_cut) or len(self.tags) < 2:
self.w.delete_cut.set_enabled(False)
self.w.btn_move.set_enabled(False)
self.w.btn_edit.set_enabled(False)
self.set_mode('draw')
if self.use_slit:
self.redraw_slit('clear')
else:
self.w.delete_cut.set_enabled(True)
self.w.btn_move.set_enabled(True)
self.w.btn_edit.set_enabled(True)
if self.w.btn_edit.get_state():
self.edit_select_cuts()
if self.use_slit:
self._plot_slit()
def cut_select_cb(self, w, index):
tag = self.tags[index]
self.select_cut(tag)
def set_cutsdrawtype_cb(self, w, index):
self.cuttype = self.cuttypes[index]
self.canvas.set_drawtype(self.cuttype, color='cyan', linestyle='dash')
def delete_cut_cb(self, w):
tag = self.cutstag
if tag == self._new_cut:
return
index = self.tags.index(tag)
self.canvas.delete_object_by_tag(tag)
self.w.cuts.delete_alpha(tag)
self.tags.remove(tag)
idx = len(self.tags) - 1
tag = self.tags[idx]
self.select_cut(tag)
if tag == self._new_cut:
self.save_cuts.set_enabled(False)
if self.use_slit:
self.save_slit.set_enabled(False)
# plot cleared in replot_all() if no more cuts
self.replot_all()
def delete_all_cb(self, w):
self.canvas.delete_all_objects()
self.w.cuts.clear()
self.tags = [self._new_cut]
self.cutstag = self._new_cut
self.w.cuts.append_text(self._new_cut)
self.select_cut(self._new_cut)
self.save_cuts.set_enabled(False)
if self.use_slit:
self.save_slit.set_enabled(False)
# plot cleared in replot_all() if no more cuts
self.replot_all()
def add_cuts_tag(self, tag):
if not tag in self.tags:
self.tags.append(tag)
self.w.cuts.append_text(tag)
select_flag = self.settings.get('select_new_cut', True)
if select_flag:
self.select_cut(tag)
move_flag = self.settings.get('draw_then_move', True)
if move_flag:
self.set_mode('move')
def close(self):
#self.set_mode('move')
self.fv.stop_local_plugin(self.chname, str(self))
self.gui_up = False
return True
def start(self):
# start line cuts operation
self.instructions()
self.cuts_plot.set_titles(rtitle="Cuts")
self.drag_update = self.settings.get('drag_update', False)
# insert canvas, if not already
p_canvas = self.fitsimage.get_canvas()
try:
obj = p_canvas.get_object_by_tag(self.layertag)
except KeyError:
# Add ruler layer
p_canvas.add(self.canvas, tag=self.layertag)
#self.canvas.delete_all_objects()
self.resume()
def pause(self):
self.canvas.ui_setActive(False)
def resume(self):
# turn off any mode user may be in
self.modes_off()
self.canvas.ui_setActive(True)
self.fv.show_status("Draw a line with the right mouse button")
self.replot_all()
if self.use_slit:
self.cuts_image = self.fitsimage.get_image()
def stop(self):
# remove the canvas from the image
p_canvas = self.fitsimage.get_canvas()
p_canvas.delete_object_by_tag(self.layertag)
self.fv.show_status("")
def redo(self):
"""This is called when a new image arrives or the data in the
existing image changes.
"""
if self.use_slit:
image = self.fitsimage.get_image()
if image != self.cuts_image:
self.cuts_image = image
self.build_axes()
self.replot_all()
def _get_perpendicular_points(self, obj, x, y, r):
dx = float(obj.x1 - obj.x2)
dy = float(obj.y1 - obj.y2)
dist = numpy.sqrt(dx*dx + dy*dy)
dx /= dist
dy /= dist
x3 = x + r * dy
y3 = y - r * dx
x4 = x - r * dy
y4 = y + r * dx
return (x3, y3, x4, y4)
def _get_width_points(self, obj, x, y, rx, ry):
x3, y3 = x - rx, y - ry
x4, y4 = x + rx, y + ry
return (x3, y3, x4, y4)
def get_orthogonal_points(self, obj, x, y, r):
if self.widthtype == 'x':
return self._get_width_points(obj, x, y, r, 0)
elif self.widthtype == 'y':
return self._get_width_points(obj, x, y, 0, r)
else:
return self._get_perpendicular_points(obj, x, y, r)
def get_orthogonal_array(self, image, obj, x, y, r):
x1, y1, x2, y2 = self.get_orthogonal_points(obj, x, y, r)
values = image.get_pixels_on_line(int(x1), int(y1),
int(x2), int(y2))
return numpy.array(values)
def _plotpoints(self, obj, color):
image = self.fitsimage.get_image()
# Get points on the line
if obj.kind == 'line':
if self.widthtype == 'none':
points = image.get_pixels_on_line(int(obj.x1), int(obj.y1),
int(obj.x2), int(obj.y2))
else:
coords = image.get_pixels_on_line(int(obj.x1), int(obj.y1),
int(obj.x2), int(obj.y2),
getvalues=False)
points = []
for x, y in coords:
arr = self.get_orthogonal_array(image, obj, x, y,
self.width_radius)
val = numpy.nansum(arr)
points.append(val)
elif obj.kind in ('path', 'freepath'):
points = []
x1, y1 = obj.points[0]
for x2, y2 in obj.points[1:]:
pts = image.get_pixels_on_line(int(x1), int(y1),
int(x2), int(y2))
# don't repeat last point when adding next segment
points.extend(pts[:-1])
x1, y1 = x2, y2
elif obj.kind == 'beziercurve':
points = obj.get_pixels_on_curve(image)
points = numpy.array(points)
rgb = colors.lookup_color(color)
self.cuts_plot.cuts(points, xtitle="Line Index", ytitle="Pixel Value",
color=rgb)
if self.settings.get('show_cuts_legend', False):
self.add_legend()
def add_legend(self):
"""Add or update Cuts plot legend."""
cuts = [tag for tag in self.tags if tag is not self._new_cut]
self.cuts_plot.ax.legend(cuts, loc='best',
shadow=True, fancybox=True,
prop={'size': 8}, labelspacing=0.2)
def get_coords(self, obj):
image = self.fitsimage.get_image()
# Check whether multidimensional
if len(image.naxispath) <= 0:
return
# Get points on the line
if obj.kind == 'line':
coords = image.get_pixels_on_line(int(obj.x1), int(obj.y1),
int(obj.x2), int(obj.y2),
getvalues=False)
elif obj.kind in ('path', 'freepath'):
coords = []
x1, y1 = obj.points[0]
for x2, y2 in obj.points[1:]:
pts = image.get_pixels_on_line(int(x1), int(y1),
int(x2), int(y2),
getvalues=False)
# don't repeat last point when adding next segment
coords.extend(pts[:-1])
x1, y1 = x2, y2
elif obj.kind == 'beziercurve':
coords = obj.get_pixels_on_curve(image, getvalues=False)
# Exclude NaNs
coords = [c for c in coords if not numpy.any(numpy.isnan(c))]
shape = image.shape
# Exclude points outside boundaries
coords = [(coord[0], coord[1]) for coord in coords
if (0 <= coord[0] < shape[1] and 0 <= coord[1] < shape[0])]
if not coords:
self.redraw_slit('clear')
return
return numpy.array(coords)
def get_slit_data(self, coords):
image = self.fitsimage.get_image()
data = image.get_mddata()
naxes = data.ndim
# Small correction
selected_axis = abs(self.selected_axis - naxes)
spatial_axes = [naxes-1, naxes-2]
# Build N-dim slice
axes_slice = image.revnaxis + [0, 0]
# Slice data according to axis
for i, sa in enumerate(spatial_axes):
axes_slice[sa] = coords[:, i]
axes_slice[selected_axis] = slice(None, None, None)
self.slit_data = data[axes_slice]
def _plot_slit(self):
if not self.selected_axis:
return
obj = self.canvas.get_object_by_tag(self.cutstag)
line = self._getlines(obj)
self.get_slit_data(self.get_coords(line[0]))
if self.transpose_enabled:
self.redraw_slit('transpose')
else:
self.slit_plot.ax.imshow(
self.slit_data, interpolation='nearest',
origin='lower', aspect='auto').set_cmap('gray')
self.set_labels()
self.slit_plot.draw()
def _replot(self, lines, colors):
for idx in range(len(lines)):
line, color = lines[idx], colors[idx]
line.color = color
self._plotpoints(line, color)
return True
def replot_all(self):
self.cuts_plot.clear()
self.w.delete_all.set_enabled(False)
self.save_cuts.set_enabled(False)
if self.use_slit:
self.save_slit.set_enabled(False)
idx = 0
for cutstag in self.tags:
if cutstag == self._new_cut:
continue
obj = self.canvas.get_object_by_tag(cutstag)
if obj.kind != 'compound':
continue
lines = self._getlines(obj)
n = len(lines)
count = obj.get_data('count', self.count)
idx = (count + n) % len(self.colors)
colors = self.colors[idx:idx+n]
# text should take same color as first line in line set
text = obj.objects[1]
if text.kind == 'text':
text.color = colors[0]
#text.color = color
self._replot(lines, colors)
self.save_cuts.set_enabled(True)
self.w.delete_all.set_enabled(True)
# Redraw slit image for selected cut
if self.use_slit:
if self.cutstag != self._new_cut:
self._plot_slit()
if self.selected_axis:
self.save_slit.set_enabled(True)
# force mpl redraw
self.cuts_plot.draw()
self.canvas.redraw(whence=3)
self.fv.show_status("Click or drag left mouse button to reposition cuts")
return True
def _create_cut(self, x, y, count, x1, y1, x2, y2, color='cyan'):
text = "cuts%d" % (count)
if not self.settings.get('label_cuts', False):
text = ''
line_obj = self.dc.Line(x1, y1, x2, y2, color=color,
showcap=False)
text_obj = self.dc.Text(4, 4, text, color=color, coord='offset',
ref_obj=line_obj)
obj = self.dc.CompoundObject(line_obj, text_obj)
obj.set_data(cuts=True)
return obj
def _update_tines(self, obj):
if obj.objects[0].kind != 'line':
# right now we only know how to adjust lines
return
# Remove previous tines, if any
if len(obj.objects) > 2:
obj.objects = obj.objects[:2]
if self.widthtype == 'none':
return
image = self.fitsimage.get_image()
line = obj.objects[0]
coords = image.get_pixels_on_line(int(line.x1), int(line.y1),
int(line.x2), int(line.y2),
getvalues=False)
crdmap = OffsetMapper(self.fitsimage, line)
num_ticks = max(len(coords) // self.tine_spacing_px, 3)
interval = len(coords) // num_ticks
for i in range(0, len(coords), interval):
x, y = coords[i]
x1, y1, x2, y2 = self.get_orthogonal_points(line, x, y,
self.width_radius)
(x1, y1), (x2, y2) = crdmap.calc_offsets([(x1, y1), (x2, y2)])
aline = self.dc.Line(x1, y1, x2, y2)
aline.crdmap = crdmap
aline.editable = False
obj.objects.append(aline)
def _create_cut_obj(self, count, cuts_obj, color='cyan'):
text = "cuts%d" % (count)
if not self.settings.get('label_cuts', False):
text = ''
cuts_obj.showcap = False
cuts_obj.linestyle = 'solid'
#cuts_obj.color = color
color = cuts_obj.color
args = [cuts_obj]
text_obj = self.dc.Text(4, 4, text, color=color, coord='offset',
ref_obj=cuts_obj)
args.append(text_obj)
obj = self.dc.CompoundObject(*args)
obj.set_data(cuts=True)
if (self.widthtype != 'none') and (self.width_radius > 0):
self._update_tines(obj)
return obj
def _combine_cuts(self, *args):
return self.dc.CompoundObject(*args)
def _append_lists(self, l):
if len(l) == 0:
return []
elif len(l) == 1:
return l[0]
else:
res = l[0]
res.extend(self._append_lists(l[1:]))
return res
def _getlines(self, obj):
if obj.kind == 'compound':
#return self._append_lists(list(map(self._getlines, obj.objects)))
return [ obj.objects[0] ]
elif obj.kind in self.cuttypes:
return [obj]
else:
return []
def buttondown_cb(self, canvas, event, data_x, data_y, viewer):
return self.motion_cb(canvas, event, data_x, data_y, viewer)
def motion_cb(self, canvas, event, data_x, data_y, viewer):
if self.cutstag == self._new_cut:
return True
obj = self.canvas.get_object_by_tag(self.cutstag)
# Assume first element of this compound object is the reference obj
obj = obj.objects[0]
obj.move_to(data_x, data_y)
canvas.redraw(whence=3)
if self.drag_update:
self.replot_all()
return True
def buttonup_cb(self, canvas, event, data_x, data_y, viewer):
if self.cutstag == self._new_cut:
return True
obj = self.canvas.get_object_by_tag(self.cutstag)
# Assume first element of this compound object is the reference obj
obj = obj.objects[0]
obj.move_to(data_x, data_y)
self.replot_all()
return True
def keydown(self, canvas, event, data_x, data_y, viewer):
if event.key == 'n':
self.select_cut(self._new_cut)
return True
elif event.key == 'h':
self.cut_at('horizontal')
return True
elif event.key == 'j':
self.cut_at('vertical')
return True
return False
def _get_new_count(self):
counts = set([])
for cutstag in self.tags:
try:
obj = self.canvas.get_object_by_tag(cutstag)
except KeyError:
continue
counts.add(obj.get_data('count', 0))
ncounts = set(range(len(self.colors)))
avail = list(ncounts.difference(counts))
avail.sort()
if len(avail) > 0:
count = avail[0]
else:
self.count += 1
count = self.count
return count
def _get_cut_index(self):
if self.cutstag != self._new_cut:
# Replacing a cut
self.logger.debug("replacing cut position")
try:
cutobj = self.canvas.get_object_by_tag(self.cutstag)
self.canvas.delete_object_by_tag(self.cutstag)
count = cutobj.get_data('count')
except KeyError:
count = self._get_new_count()
else:
self.logger.debug("adding cut position")
count = self._get_new_count()
return count
def cut_at(self, cuttype):
"""Perform a cut at the last mouse position in the image.
`cuttype` determines the type of cut made.
"""
data_x, data_y = self.fitsimage.get_last_data_xy()
image = self.fitsimage.get_image()
wd, ht = image.get_size()
coords = []
if cuttype == 'horizontal':
coords.append((0, data_y, wd - 1, data_y))
elif cuttype == 'vertical':
coords.append((data_x, 0, data_x, ht-1))
count = self._get_cut_index()
tag = "cuts%d" % (count)
cuts = []
for (x1, y1, x2, y2) in coords:
# calculate center of line
wd = x2 - x1
dw = wd // 2
ht = y2 - y1
dh = ht // 2
x, y = x1 + dw + 4, y1 + dh + 4
cut = self._create_cut(x, y, count, x1, y1, x2, y2, color='cyan')
self._update_tines(cut)
cuts.append(cut)
if len(cuts) == 1:
cut = cuts[0]
else:
cut = self._combine_cuts(*cuts)
cut.set_data(count=count)
self.canvas.delete_object_by_tag(tag)
self.canvas.add(cut, tag=tag)
self.add_cuts_tag(tag)
self.logger.debug("redoing cut plots")
return self.replot_all()
def draw_cb(self, canvas, tag):
obj = canvas.get_object_by_tag(tag)
canvas.delete_object_by_tag(tag)
if not obj.kind in self.cuttypes:
return True
count = self._get_cut_index()
tag = "cuts%d" % (count)
cut = self._create_cut_obj(count, obj, color='cyan')
cut.set_data(count=count)
self._update_tines(cut)
canvas.delete_object_by_tag(tag)
self.canvas.add(cut, tag=tag)
self.add_cuts_tag(tag)
self.logger.debug("redoing cut plots")
return self.replot_all()
def edit_cb(self, canvas, obj):
self.redraw_cuts()
self.replot_all()
return True
def edit_select_cuts(self):
if self.cutstag != self._new_cut:
obj = self.canvas.get_object_by_tag(self.cutstag)
# drill down to reference shape
if hasattr(obj, 'objects'):
obj = obj.objects[0]
self.canvas.edit_select(obj)
else:
self.canvas.clear_selected()
self.canvas.update_canvas()
def set_mode_cb(self, mode, tf):
"""Called when one of the Move/Draw/Edit radio buttons is selected."""
if tf:
self.canvas.set_draw_mode(mode)
if mode == 'edit':
self.edit_select_cuts()
return True
def set_mode(self, mode):
self.canvas.set_draw_mode(mode)
self.w.btn_move.set_state(mode == 'move')
self.w.btn_draw.set_state(mode == 'draw')
self.w.btn_edit.set_state(mode == 'edit')
def redraw_cuts(self):
"""Redraws cuts with tines (for cuts with a 'width')."""
self.logger.debug("redrawing cuts")
for cutstag in self.tags:
if cutstag == self._new_cut:
continue
obj = self.canvas.get_object_by_tag(cutstag)
if obj.kind != 'compound':
continue
self._update_tines(obj)
self.canvas.redraw(whence=3)
def width_radius_changed_cb(self, widget, val):
"""Callback executed when the Width radius is changed."""
self.width_radius = val
self.redraw_cuts()
self.replot_all()
return True
def set_width_type_cb(self, widget, idx):
self.widthtype = self.widthtypes[idx]
self.redraw_cuts()
self.replot_all()
return True
def save_cb(self, mode):
"""Save image, figure, and plot data arrays."""
# This just defines the basename.
# Extension has to be explicitly defined or things can get messy.
target = Widgets.SaveDialog(
title='Save {0} data'.format(mode)).get_path()
# Save cancelled
if not target:
return
# TODO: This can be a user preference?
fig_dpi = 100
if mode == 'cuts':
# Save as fits file
image = self.fitsimage.get_image()
self.fv.error_wrap(image.save_as_file, target + '.fits')
fig, xarr, yarr = self.cuts_plot.get_data()
elif mode == 'slit':
fig, xarr, yarr = self.slit_plot.get_data()
fig.savefig(target + '.png', dpi=fig_dpi)
numpy.savez_compressed(target + '.npz', x=xarr, y=yarr)
def axis_toggle_cb(self, w, tf, pos):
children = self.hbox_axes.get_children()
# Deactivate previously selected axis
if self.selected_axis is not None:
children[self.selected_axis-1].set_state(False)
# Check if the old axis is clicked
if pos == self.selected_axis:
self.selected_axis = None
self.save_slit.set_enabled(False)
self.redraw_slit('clear')
else:
self.selected_axis = pos
children[pos-1].set_state(tf)
if self.cutstag != self._new_cut:
self.save_slit.set_enabled(True)
self._plot_slit()
def redraw_slit(self, mode):
if mode == 'clear':
self.slit_plot.clear()
elif mode == 'transpose':
self.slit_data = self.slit_data.T
self.slit_plot.ax.imshow(
self.slit_data, interpolation='nearest',
origin='lower', aspect='auto').set_cmap('gray')
self.set_labels()
self.slit_plot.draw()
def transpose_plot(self, w, tf):
old_val = self.transpose_enabled
self.transpose_enabled = tf
if (old_val != tf and self.cutstag != self._new_cut and
self.selected_axis):
self.redraw_slit('transpose')
def set_labels(self):
image = self.fitsimage.get_image()
shape = image.get_mddata().shape
if (shape[0] == len(self.slit_data[0]) or
shape[1] == len(self.slit_data[0])):
self.slit_plot.ax.set_xlabel('')
self.slit_plot.ax.set_ylabel('Position along slit')
else:
self.slit_plot.ax.set_ylabel('')
self.slit_plot.ax.set_xlabel('Position along slit')
def __str__(self):
return 'cuts'
#END
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