/usr/lib/python2.7/dist-packages/ginga/Bindings.py is in python-ginga 2.7.0-2.
This file is owned by root:root, with mode 0o644.
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# Bindings.py -- Bindings classes for Ginga FITS viewer.
#
# This is open-source software licensed under a BSD license.
# Please see the file LICENSE.txt for details.
import math
import os.path
import itertools
import numpy as np
from ginga.misc import Bunch, Settings, Callback
from ginga import trcalc
from ginga import cmap, imap
from ginga.util.paths import icondir
class ImageViewBindings(object):
"""
Mouse Operation and Bindings
"""
def __init__(self, logger, settings=None):
super(ImageViewBindings, self).__init__()
self.logger = logger
self.canpan = False
self.canzoom = False
self.cancut = False
self.cancmap = False
self.canflip = False
self.canrotate = False
# For panning
self._pantype = 1
self._start_x = None
self._start_y = None
self._start_panx = 0
self._start_pany = 0
self._start_scale_x = 0
self._start_scale_y = 0
self._start_rot = 0
self._save = {}
if settings is None:
# No settings passed. Set up defaults.
settings = Settings.SettingGroup(name='bindings',
logger=self.logger)
self.initialize_settings(settings)
self.settings = settings
self.features = dict(
# name, attr pairs
pan='canpan', zoom='canzoom', cuts='cancut', cmap='cancmap',
flip='canflip', rotate='canrotate')
self.cursor_map = {}
def initialize_settings(self, settings):
settings.addSettings(
# You should rarely have to change these.
btn_nobtn=0x0,
btn_left=0x1,
btn_middle=0x2,
btn_right=0x4,
# define our cursors
## cur_pick = 'thinCrossCursor',
## cur_pan = 'openHandCursor',
# Set up our standard modifiers
mod_shift=['shift_l', 'shift_r'],
mod_ctrl=['control_l', 'control_r'],
mod_win=['meta_right'],
# Define our modes
# Mode 'meta' is special: it is an intermediate mode that
# is used primarily to launch other modes
# If the mode initiation character is preceeded by a double
# underscore, then the mode must be initiated from the "meta"
# mode.
dmod_meta=['space', None, None],
dmod_draw=['__b', None, None],
dmod_cmap=['__y', None, None],
dmod_cuts=['__s', None, None],
dmod_dist=['__d', None, None],
dmod_contrast=['__t', None, None],
dmod_rotate=['__r', None, None],
dmod_pan=['__q', None, 'pan'],
dmod_freepan=['__w', None, 'pan'],
dmod_camera=['__c', None, 'pan'],
dmod_naxis=['__n', None, None],
default_mode_type='locked',
default_lock_mode_type='softlock',
# KEYBOARD
kp_zoom_in=['+', '='],
kp_zoom_out=['-', '_'],
kp_zoom=['1', '2', '3', '4', '5', '6', '7', '8', '9', '0'],
kp_zoom_inv=['!', '@', '#', '$', '%', '^', '&', '*', '(', ')'],
kp_zoom_fit=['backquote', 'pan+backquote', 'freepan+backquote'],
kp_autozoom_toggle=['doublequote', 'pan+doublequote'],
kp_autozoom_override=['singlequote', 'pan+singlequote'],
kp_dist_reset=['D', 'dist+D'],
kp_dist_prev=['dist+up', 'dist+b'],
kp_dist_next=['dist+down', 'dist+n'],
kp_pan_set=['p', 'pan+p', 'freepan+p'],
kp_pan_zoom_set=['pan+1', 'freepan+1'],
kp_pan_zoom_save=['pan+z', 'freepan+z'],
kp_pan_left=['pan+*+left', 'freepan+*+left'],
kp_pan_right=['pan+*+right', 'freepan+*+right'],
kp_pan_up=['pan+*+up', 'freepan+*+up'],
kp_pan_down=['pan+*+down', 'freepan+*+down'],
kp_pan_home=['pan+*+home', 'freepan+*+home'],
kp_pan_end=['pan+*+end', 'freepan+*+end'],
kp_pan_page_up=['pan+*+page_up', 'freepan+*+page_up'],
kp_pan_page_down=['pan+*+page_down', 'freepan+*+page_down'],
kp_pan_px_xminus=['shift+left'],
kp_pan_px_xplus=['shift+right'],
kp_pan_px_yminus=['shift+down'],
kp_pan_px_yplus=['shift+up'],
kp_pan_px_center=['shift+home'],
kp_center=['c', 'pan+c', 'freepan+c'],
kp_cut_255=['cuts+A'],
kp_cut_minmax=['cuts+S'],
kp_cut_auto=['a', 'cuts+a'],
kp_autocuts_alg_prev=['cuts+up', 'cuts+b'],
kp_autocuts_alg_next=['cuts+down', 'cuts+n'],
kp_autocuts_toggle=[':', 'cuts+:'],
kp_autocuts_override=[';', 'cuts+;'],
kp_autocenter_toggle=['?', 'pan+?'],
kp_autocenter_override=['/', 'pan+/'],
kp_contrast_restore=['T', 'contrast+T'],
kp_cmap_reset=['Y', 'cmap+Y'],
kp_cmap_restore=['cmap+r'],
kp_cmap_invert=['I', 'cmap+I'],
kp_cmap_prev=['cmap+up', 'cmap+b'],
kp_cmap_next=['cmap+down', 'cmap+n'],
kp_toggle_cbar=['cmap+c'],
kp_imap_reset=['cmap+i'],
kp_imap_prev=['cmap+left', 'cmap+j'],
kp_imap_next=['cmap+right', 'cmap+k'],
kp_flip_x=['[', '{', 'rotate+[', 'rotate+{'],
kp_flip_y=[']', '}', 'rotate+]', 'rotate+}'],
kp_swap_xy=['backslash', '|', 'rotate+backslash', 'rotate+|'],
kp_rotate_reset=['R', 'rotate+R'],
kp_rotate_inc90=['.', 'rotate+.'],
kp_rotate_dec90=[',', 'rotate+,'],
kp_orient_lh=['o', 'rotate+o'],
kp_orient_rh=['O', 'rotate+O'],
kp_poly_add=['v', 'draw+v'],
kp_poly_del=['z', 'draw+z'],
kp_edit_del=['draw+x'],
kp_reset=['escape'],
kp_lock=['L', 'meta+L'],
kp_softlock=['l', 'meta+l'],
kp_camera_save=['camera+s'],
kp_camera_reset=['camera+r'],
kp_camera_toggle3d=['camera+3'],
# pct of a window of data to move with pan key commands
key_pan_pct=0.666667,
# amount to move (in pixels) when using key pan arrow
key_pan_px_delta=1.0,
# SCROLLING/WHEEL
sc_pan=['ctrl+scroll'],
sc_pan_fine=['pan+shift+scroll'],
sc_pan_coarse=['pan+ctrl+scroll'],
sc_zoom=['scroll', 'freepan+scroll'],
sc_zoom_fine=[],
sc_zoom_coarse=[],
sc_zoom_origin=['shift+scroll', 'freepan+shift+scroll'],
sc_cuts_fine=['cuts+ctrl+scroll'],
sc_cuts_coarse=['cuts+scroll'],
sc_cuts_alg=[],
sc_dist=['dist+scroll'],
sc_cmap=['cmap+scroll'],
sc_imap=['cmap+ctrl+scroll'],
sc_camera_track=['camera+scroll'],
sc_naxis=['naxis+scroll'],
scroll_pan_acceleration=1.0,
# 1.0 is appropriate for a mouse, 0.1 for most trackpads
scroll_zoom_acceleration=1.0,
#scroll_zoom_acceleration=0.1,
scroll_zoom_direct_scale=False,
mouse_zoom_acceleration=1.085,
mouse_rotate_acceleration=0.75,
pan_reverse=False,
pan_multiplier=1.0,
pan_min_scroll_thumb_pct=0.0,
pan_max_scroll_thumb_pct=0.9,
zoom_scroll_reverse=False,
# MOUSE/BUTTON
ms_none=['nobtn'],
ms_cursor=['left'],
ms_wheel=[],
ms_draw=['draw+left', 'win+left', 'right'],
ms_rotate=['rotate+left'],
ms_rotate_reset=['rotate+right'],
ms_contrast=['contrast+left', 'ctrl+right'],
ms_contrast_restore=['contrast+right', 'ctrl+middle'],
ms_pan=['pan+left', 'ctrl+left'],
ms_zoom=['pan+right'],
ms_freepan=['freepan+middle'],
ms_zoom_in=['freepan+left'],
ms_zoom_out=['freepan+right', 'freepan+ctrl+left'],
ms_cutlo=['cuts+shift+left'],
ms_cuthi=['cuts+ctrl+left'],
ms_cutall=['cuts+left'],
ms_cut_auto=['cuts+right'],
ms_panset=['pan+middle', 'shift+left', 'middle'],
ms_cmap_rotate=['cmap+left'],
ms_cmap_restore=['cmap+right'],
ms_camera_orbit=['camera+left'],
ms_camera_pan_delta=['camera+right'],
ms_naxis=['naxis+left'],
# GESTURES (some backends only)
pi_zoom=['pinch'],
pi_zoom_origin=['shift+pinch'],
pa_pan=['pan'],
pa_zoom=['freepan+pan'],
pa_zoom_origin=['freepan+shift+pan'],
pa_naxis=['naxis+pan'],
pinch_actions=['zoom'],
pinch_zoom_acceleration=1.0,
pinch_rotate_acceleration=1.0,
pan_pan_acceleration=1.0,
# No messages for following operations:
msg_panset=False,
)
def get_settings(self):
return self.settings
def window_map(self, viewer):
self.to_default_mode(viewer)
def set_bindings(self, viewer):
viewer.add_callback('map', self.window_map)
bindmap = viewer.get_bindmap()
bindmap.clear_button_map()
bindmap.clear_event_map()
bindmap.add_callback('mode-set', self.mode_set_cb, viewer)
# Set up bindings
self.setup_settings_events(viewer, bindmap)
def set_mode(self, viewer, name, mode_type='oneshot'):
bindmap = viewer.get_bindmap()
bindmap.set_mode(name, mode_type=mode_type)
def mode_set_cb(self, bm, mode, mode_type, viewer):
cursor_name = self.cursor_map.get(mode, 'pick')
viewer.switch_cursor(cursor_name)
def parse_combo(self, combo, modes_set, modifiers_set, pfx):
"""
Parse a string into a mode, a set of modifiers and a trigger.
"""
mode, mods, trigger = None, set([]), combo
if '+' in combo:
if combo.endswith('+'):
# special case: probably contains the keystroke '+'
trigger, combo = '+', combo[:-1]
if '+' in combo:
items = set(combo.split('+'))
else:
items = set(combo)
else:
# trigger is always specified last
items = combo.split('+')
trigger, items = items[-1], set(items[:-1])
if '*' in items:
items.remove('*')
# modifier wildcard
mods = '*'
else:
mods = items.intersection(modifiers_set)
mode = items.intersection(modes_set)
if len(mode) == 0:
mode = None
else:
mode = mode.pop()
if pfx is not None:
trigger = pfx + trigger
return (mode, mods, trigger)
def setup_settings_events(self, viewer, bindmap):
d = self.settings.get_dict()
if len(d) == 0:
self.initialize_settings(self.settings)
d = self.settings.get_dict()
# First scan settings for buttons and modes
bindmap.clear_button_map()
bindmap.clear_modifier_map()
bindmap.clear_mode_map()
bindmap.clear_event_map()
mode_type = self.settings.get('default_mode_type', 'oneshot')
bindmap.set_default_mode_type(mode_type)
for name, value in d.items():
if name.startswith('mod_'):
modname = name[4:]
for combo in value:
# NOTE: for now no chorded combinations to make modifiers
keyname = combo
bindmap.add_modifier(keyname, modname)
elif name.startswith('cur_'):
curname = name[4:]
self.add_cursor(viewer, curname, value)
elif name.startswith('btn_'):
btnname = name[4:]
bindmap.map_button(value, btnname)
elif name.startswith('dmod_'):
mode_name = name[5:]
keyname, mode_type, curname = value
bindmap.add_mode(keyname, mode_name, mode_type=mode_type,
msg=None)
if curname is not None:
self.cursor_map[mode_name] = curname
self.merge_actions(viewer, bindmap, self, d.items())
def merge_actions(self, viewer, bindmap, obj, tups):
modes_set = bindmap.get_modes()
modifiers_set = bindmap.get_modifiers()
# Add events
for name, value in tups:
if len(name) <= 3:
continue
pfx = name[:3]
if pfx not in ('kp_', 'ms_', 'sc_', 'gs_', 'pi_', 'pa_'):
continue
evname = name[3:]
for combo in value:
mode, modifiers, trigger = self.parse_combo(combo, modes_set,
modifiers_set, pfx)
if modifiers == '*':
# wildcard; register for all modifier combinations
modifiers_poss = set([])
for i in range(len(modifiers_set) + 1):
modifiers_poss = modifiers_poss.union(
itertools.combinations(modifiers_set, i))
for modifiers in modifiers_poss:
bindmap.map_event(mode, modifiers, trigger, evname)
else:
bindmap.map_event(mode, modifiers, trigger, evname)
# Register for this symbolic event if we have a handler for it
try:
cb_method = getattr(obj, name)
except AttributeError:
# Do we need a warning here?
#self.logger.warning("No method found matching '%s'" % (name))
cb_method = None
if pfx == 'kp_':
# keyboard event
event = 'keydown-%s' % (evname)
viewer.enable_callback(event)
if cb_method:
viewer.add_callback(event, cb_method)
elif pfx == 'ms_':
# mouse/button event
for action in ('down', 'move', 'up'):
event = '%s-%s' % (evname, action)
viewer.enable_callback(event)
if cb_method:
viewer.add_callback(event, cb_method)
elif pfx == 'sc_':
# scrolling event
event = '%s-scroll' % evname
viewer.enable_callback(event)
if cb_method:
viewer.add_callback(event, cb_method)
elif pfx == 'pi_':
# pinch event
event = '%s-pinch' % evname
viewer.enable_callback(event)
if cb_method:
viewer.add_callback(event, cb_method)
elif pfx == 'pa_':
# pan event
event = '%s-pan' % evname
viewer.enable_callback(event)
if cb_method:
viewer.add_callback(event, cb_method)
elif pfx == 'gs_':
# for backward compatibility
self.logger.warning("'gs_' bindings will be deprecated in a future "
"version--please update your bindings.cfg")
viewer.set_callback(evname, cb_method)
def reset(self, viewer):
bindmap = viewer.get_bindmap()
bindmap.reset_mode(viewer)
viewer.onscreen_message(None)
def add_cursor(self, viewer, curname, curpath):
if not curpath.startswith('/'):
curpath = os.path.join(icondir, curpath)
cursor = viewer.make_cursor(curpath, 8, 8)
viewer.define_cursor(curname, cursor)
##### ENABLERS #####
# These methods are a quick way to enable or disable certain user
# interface features in a ImageView window
def enable_pan(self, tf):
"""Enable the image to be panned interactively (True/False)."""
self.canpan = tf
def enable_zoom(self, tf):
"""Enable the image to be zoomed interactively (True/False)."""
self.canzoom = tf
def enable_cuts(self, tf):
"""Enable the cuts levels to be set interactively (True/False)."""
self.cancut = tf
def enable_cmap(self, tf):
"""Enable the color map to be warped interactively (True/False)."""
self.cancmap = tf
def enable_flip(self, tf):
"""Enable the image to be flipped interactively (True/False)."""
self.canflip = tf
def enable_rotate(self, tf):
"""Enable the image to be rotated interactively (True/False)."""
self.canrotate = tf
def enable(self, **kwdargs):
"""
General enable function encompassing all user interface features.
Usage (e.g.):
viewer.enable(rotate=False, flip=True)
"""
for feat, value in kwdargs:
feat = feat.lower()
if feat not in self.features:
raise ValueError("'%s' is not a feature. Must be one of %s" % (
feat, str(self.features)))
attr = self.features[feat]
setattr(self, attr, bool(value))
def enable_all(self, tf):
for feat, attr in self.features.items():
setattr(self, attr, bool(tf))
##### Help methods #####
# Methods used by the callbacks to do actions.
def get_new_pan(self, viewer, win_x, win_y, ptype=1):
if ptype == 1:
# This is a "free pan", similar to dragging the "lens"
# over the canvas.
dat_wd, dat_ht = viewer.get_data_size()
win_wd, win_ht = viewer.get_window_size()
if (win_x >= win_wd):
win_x = win_wd - 1
if (win_y >= win_ht):
win_y = win_ht - 1
# Figure out data x,y based on percentage of X axis
# and Y axis
off_x, off_y = viewer.window_to_offset(win_x, win_y)
max_x, max_y = viewer.window_to_offset(win_wd, win_ht)
wd_x = abs(max_x) * 2.0
ht_y = abs(max_y) * 2.0
panx = (off_x + abs(max_x)) / float(wd_x)
pany = (off_y + abs(max_y)) / float(ht_y)
# Account for user preference
if self.settings.get('pan_reverse', False):
panx = 1.0 - panx
pany = 1.0 - pany
data_x, data_y = panx * dat_wd, pany * dat_ht
return data_x, data_y
elif ptype == 2:
# This is a "drag pan", similar to dragging the canvas
# under the "lens" or "viewport".
if self._start_x is None:
# user has not held the mouse button yet
# return current pan values
return (self._start_panx, self._start_pany)
scale_x, scale_y = viewer.get_scale_xy()
multiplier = self.settings.get('pan_multiplier', 1.0)
off_x, off_y = viewer.window_to_offset(win_x, win_y)
delta_x = float(self._start_x - off_x) / scale_x * multiplier
delta_y = float(self._start_y - off_y) / scale_y * multiplier
data_x = self._start_panx + delta_x
data_y = self._start_pany + delta_y
return (data_x, data_y)
def _panset(self, viewer, data_x, data_y, msg=True):
try:
msg = self.settings.get('msg_panset', msg)
if msg:
viewer.onscreen_message("Pan position set", delay=0.4)
res = viewer.panset_xy(data_x, data_y)
return res
except Exception as e:
viewer.onscreen_message("Pan position set error; see log",
delay=2.0)
# most likely image does not have a valid wcs
self.logger.error("Error setting pan position: %s" % (
str(e)))
def _get_key_pan_pct(self, event):
amt = self.settings.get('key_pan_pct', 2 / 3.0)
if 'ctrl' in event.modifiers:
amt /= 5.0
if 'shift' in event.modifiers:
amt /= 10.0
return amt
def calc_pan_pct(self, viewer, pad=0):
"""Calculate values for vertical/horizontal panning by percentages
from the current pan position.
"""
limits = viewer.get_limits()
tr = viewer.tform['data_to_scrollbar']
# calculate the corners of the entire image in unscaled cartesian
mxwd, mxht = limits[1][:2]
mxwd, mxht = mxwd + pad, mxht + pad
mnwd, mnht = limits[0][:2]
mnwd, mnht = mnwd - pad, mnht - pad
arr = np.array([(mnwd, mnht), (mxwd, mnht),
(mxwd, mxht), (mnwd, mxht)],
dtype=np.float)
x, y = tr.to_(arr).T
rx1, rx2 = np.min(x), np.max(x)
ry1, ry2 = np.min(y), np.max(y)
rect = viewer.get_pan_rect()
arr = np.array(rect, dtype=np.float)
x, y = tr.to_(arr).T
qx1, qx2 = np.min(x), np.max(x)
qy1, qy2 = np.min(y), np.max(y)
# this is the range of X and Y of the entire image
# in the viewer (unscaled)
rng_x, rng_y = abs(rx2 - rx1), abs(ry2 - ry1)
# this is the *visually shown* range of X and Y
abs_x, abs_y = abs(qx2 - qx1), abs(qy2 - qy1)
# calculate the width of the slider arms as a ratio
min_pct = self.settings.get('pan_min_scroll_thumb_pct', 0.0)
max_pct = self.settings.get('pan_max_scroll_thumb_pct', 0.9)
xthm_pct = max(min_pct, min(abs_x / (rx2 - rx1), max_pct))
ythm_pct = max(min_pct, min(abs_y / (ry2 - ry1), max_pct))
# calculate the pan position as a ratio
pct_x = min(max(0.0, abs(0.0 - rx1) / rng_x), 1.0)
pct_y = min(max(0.0, abs(0.0 - ry1) / rng_y), 1.0)
bnch = Bunch.Bunch(rng_x=rng_x, rng_y=rng_y, vis_x=abs_x, vis_y=abs_y,
thm_pct_x=xthm_pct, thm_pct_y=ythm_pct,
pan_pct_x=pct_x, pan_pct_y=pct_y)
return bnch
def pan_by_pct(self, viewer, pct_x, pct_y, pad=0):
"""Called when the scroll bars are adjusted by the user.
"""
# Sanity check on inputs
pct_x = min(1.0, max(0.0, pct_x))
pct_y = min(1.0, max(0.0, pct_y))
limits = viewer.get_limits()
tr = viewer.tform['data_to_scrollbar']
mxwd, mxht = limits[1][:2]
mxwd, mxht = mxwd + pad, mxht + pad
mnwd, mnht = limits[0][:2]
mnwd, mnht = mnwd - pad, mnht - pad
arr = np.array([(mnwd, mnht), (mxwd, mnht),
(mxwd, mxht), (mnwd, mxht)],
dtype=np.float)
x, y = tr.to_(arr).T
rx1, rx2 = np.min(x), np.max(x)
ry1, ry2 = np.min(y), np.max(y)
crd_x = rx1 + (pct_x * (rx2 - rx1))
crd_y = ry1 + (pct_y * (ry2 - ry1))
pan_x, pan_y = tr.from_((crd_x, crd_y))
self.logger.debug("crd=%f,%f pan=%f,%f" % (
crd_x, crd_y, pan_x, pan_y))
viewer.panset_xy(pan_x, pan_y)
def pan_omni(self, viewer, direction, amount, msg=False):
# calculate current pan pct
res = self.calc_pan_pct(viewer, pad=0)
ang_rad = math.radians(90.0 - direction)
amt_x = math.cos(ang_rad) * amount
amt_y = math.sin(ang_rad) * amount
# modify the pct, as per the params
pct_page_x = res.vis_x / res.rng_x
amt_x = amt_x * pct_page_x
pct_page_y = res.vis_y / res.rng_y
amt_y = amt_y * pct_page_y
pct_x = res.pan_pct_x + amt_x
pct_y = res.pan_pct_y + amt_y
# update the pan position by pct
self.pan_by_pct(viewer, pct_x, pct_y)
def pan_lr(self, viewer, pct_vw, sign, msg=False):
# calculate current pan pct
res = self.calc_pan_pct(viewer, pad=0)
pct_page = res.vis_x / res.rng_x
# modify the pct, as per the params
amt = sign * pct_vw * pct_page
pct_x = res.pan_pct_x + amt
# update the pan position by pct
self.pan_by_pct(viewer, pct_x, res.pan_pct_y)
def pan_ud(self, viewer, pct_vh, sign, msg=False):
# calculate current pan pct
res = self.calc_pan_pct(viewer, pad=0)
pct_page = res.vis_y / res.rng_y
# modify the pct, as per the params
amt = sign * pct_vh * pct_page
pct_y = res.pan_pct_y + amt
# update the pan position by pct
self.pan_by_pct(viewer, res.pan_pct_x, pct_y)
def pan_delta_px(self, viewer, x_px, y_px):
pan_x, pan_y = viewer.get_pan(coord='data')[:2]
pan_x += x_px
pan_y += y_px
viewer.panset_xy(pan_x, pan_y)
def pan_center_px(self, viewer):
data_x, data_y = viewer.get_last_data_xy()
ndata_x = float(int(data_x + viewer.data_off))
ndata_y = float(int(data_y + viewer.data_off))
x_px, y_px = ndata_x - data_x, ndata_y - data_y
self.pan_delta_px(viewer, x_px, y_px)
def get_direction(self, direction, rev=False):
"""
Translate a direction in compass degrees into 'up' or 'down'.
"""
if (direction < 90.0) or (direction >= 270.0):
if not rev:
return 'up'
else:
return 'down'
elif (90.0 <= direction < 270.0):
if not rev:
return 'down'
else:
return 'up'
else:
return 'none'
def get_win_xy(self, viewer):
x, y = viewer.get_last_win_xy()
if not viewer.window_has_origin_upper():
wd, ht = viewer.get_window_size()
y = ht - y
return x, y
def _tweak_colormap(self, viewer, x, y, mode):
win_wd, win_ht = viewer.get_window_size()
# translate Y cursor position as a percentage of the window
# height into a scaling factor
y_pct = (win_ht - y) / float(win_ht)
# I tried to mimic ds9's exponential scale feel along the Y-axis
def exp_scale(i):
return (1.0 / (i**3)) * 0.0002 + (1.0 / i) * 0.085
scale_pct = exp_scale(1.0 - y_pct)
# translate X cursor position as a percentage of the window
# width into a shifting factor
shift_pct = x / float(win_wd) - 0.5
viewer.scale_and_shift_cmap(scale_pct, shift_pct)
def _rotate_colormap(self, viewer, x, y, mode):
win_wd, win_ht = viewer.get_window_size()
# translate X cursor position as a percentage of the window
# width into a shifting factor
half_wd = win_wd / 2.0
shift_pct = (x - half_wd) / float(half_wd)
num = int(shift_pct * 255)
self.logger.debug("rotating color map by %d steps" % (num))
rgbmap = viewer.get_rgbmap()
rgbmap.restore_cmap(callback=False)
rgbmap.rotate_cmap(num)
def _cutlow_pct(self, viewer, pct, msg=True):
msg = self.settings.get('msg_cuts', msg)
image = viewer.get_image()
minval, maxval = image.get_minmax()
spread = maxval - minval
loval, hival = viewer.get_cut_levels()
loval = loval + (pct * spread)
if msg:
viewer.onscreen_message("Cut low: %.4f" % (loval))
viewer.cut_levels(loval, hival)
def _cutlow_xy(self, viewer, x, y, msg=True):
msg = self.settings.get('msg_cuts', msg)
win_wd, win_ht = viewer.get_window_size()
pct = float(x) / float(win_wd)
image = viewer.get_image()
minval, maxval = image.get_minmax()
spread = maxval - minval
loval, hival = viewer.get_cut_levels()
loval = minval + (pct * spread)
if msg:
viewer.onscreen_message("Cut low: %.4f" % (loval))
viewer.cut_levels(loval, hival)
def _cuthigh_pct(self, viewer, pct, msg=True):
msg = self.settings.get('msg_cuts', msg)
image = viewer.get_image()
minval, maxval = image.get_minmax()
spread = maxval - minval
loval, hival = viewer.get_cut_levels()
hival = hival - (pct * spread)
if msg:
viewer.onscreen_message("Cut high: %.4f" % (hival))
viewer.cut_levels(loval, hival)
def _cuthigh_xy(self, viewer, x, y, msg=True):
msg = self.settings.get('msg_cuts', msg)
win_wd, win_ht = viewer.get_window_size()
pct = 1.0 - (float(x) / float(win_wd))
image = viewer.get_image()
minval, maxval = image.get_minmax()
spread = maxval - minval
loval, hival = viewer.get_cut_levels()
hival = maxval - (pct * spread)
if msg:
viewer.onscreen_message("Cut high: %.4f" % (hival))
viewer.cut_levels(loval, hival)
def _cutboth_xy(self, viewer, x, y, msg=True):
msg = self.settings.get('msg_cuts', msg)
win_wd, win_ht = viewer.get_window_size()
xpct = 1.0 - (float(x) / float(win_wd))
#ypct = 1.0 - (float(y) / float(win_ht))
ypct = (float(win_ht - y) / float(win_ht))
spread = self._hival - self._loval
hival = self._hival - (xpct * spread)
loval = self._loval + (ypct * spread)
if msg:
viewer.onscreen_message("Cut low: %.4f high: %.4f" % (
loval, hival))
viewer.cut_levels(loval, hival)
def _cut_pct(self, viewer, pct, msg=True):
msg = self.settings.get('msg_cuts', msg)
image = viewer.get_image() # noqa
loval, hival = viewer.get_cut_levels()
## minval, maxval = image.get_minmax()
## spread = maxval - minval
spread = hival - loval
loval = loval + (pct * spread)
hival = hival - (pct * spread)
if msg:
viewer.onscreen_message("Cut low: %.4f high: %.4f" % (
loval, hival), delay=1.0)
viewer.cut_levels(loval, hival)
def _adjust_cuts(self, viewer, direction, pct, msg=True):
direction = self.get_direction(direction)
if direction == 'up':
self._cut_pct(viewer, pct, msg=msg)
elif direction == 'down':
self._cut_pct(viewer, -pct, msg=msg)
def _scale_image(self, viewer, direction, factor, msg=True):
msg = self.settings.get('msg_zoom', msg)
rev = self.settings.get('zoom_scroll_reverse', False)
scale_x, scale_y = viewer.get_scale_xy()
direction = self.get_direction(direction, rev=rev)
mult = 1.0
if direction == 'up':
mult = factor
elif direction == 'down':
mult = 1.0 / factor
scale_x, scale_y = scale_x * mult, scale_y * mult
scale = max(scale_x, scale_y)
#viewer.scale_to(scale_x, scale_y)
viewer.scale_to(scale, scale)
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=0.4)
def _zoom_xy(self, viewer, x, y, msg=True):
win_wd, win_ht = viewer.get_window_size()
delta = float(x - self._start_x)
factor = self.settings.get('mouse_zoom_acceleration', 1.085)
direction = 0.0
if delta < 0.0:
direction = 180.0
self._start_x = x
self._scale_image(viewer, direction, factor, msg=msg)
def _cycle_dist(self, viewer, msg, direction='down'):
if self.cancmap:
msg = self.settings.get('msg_dist', msg)
rgbmap = viewer.get_rgbmap()
algs = rgbmap.get_hash_algorithms()
algname = rgbmap.get_hash_algorithm()
idx = algs.index(algname)
if direction == 'down':
idx = (idx + 1) % len(algs)
else:
idx = idx - 1
if idx < 0:
idx = len(algs) - 1
algname = algs[idx]
rgbmap.set_hash_algorithm(algname)
if msg:
viewer.onscreen_message("Color dist: %s" % (algname),
delay=1.0)
def _reset_dist(self, viewer, msg):
if self.cancmap:
msg = self.settings.get('msg_dist', msg)
rgbmap = viewer.get_rgbmap()
algname = 'linear'
rgbmap.set_hash_algorithm(algname)
if msg:
viewer.onscreen_message("Color dist: %s" % (algname),
delay=1.0)
def _cycle_cuts_alg(self, viewer, msg, direction='down'):
if self.cancut:
msg = self.settings.get('msg_autocuts_alg', msg)
algs = viewer.get_autocut_methods()
settings = viewer.get_settings()
algname = settings.get('autocut_method', 'minmax')
idx = algs.index(algname)
if direction == 'down':
idx = (idx + 1) % len(algs)
else:
idx = idx - 1
if idx < 0:
idx = len(algs) - 1
algname = algs[idx]
viewer.set_autocut_params(algname)
if msg:
viewer.onscreen_message("Autocuts alg: %s" % (algname),
delay=1.0)
def _cycle_cmap(self, viewer, msg, direction='down'):
if self.cancmap:
msg = self.settings.get('msg_cmap', msg)
rgbmap = viewer.get_rgbmap()
cm = rgbmap.get_cmap()
cmapname = cm.name
cmapnames = cmap.get_names()
idx = cmapnames.index(cmapname)
if direction == 'down':
idx = (idx + 1) % len(cmapnames)
else:
idx = idx - 1
if idx < 0:
idx = len(cmapnames) - 1
cmapname = cmapnames[idx]
rgbmap.set_cmap(cmap.get_cmap(cmapname))
if msg:
viewer.onscreen_message("Color map: %s" % (cmapname),
delay=1.0)
def _reset_cmap(self, viewer, msg):
if self.cancmap:
msg = self.settings.get('msg_cmap', msg)
rgbmap = viewer.get_rgbmap()
# default
cmapname = 'gray'
rgbmap.set_cmap(cmap.get_cmap(cmapname))
if msg:
viewer.onscreen_message("Color map: %s" % (cmapname),
delay=1.0)
def _invert_cmap(self, viewer, msg):
if self.cancmap:
msg = self.settings.get('msg_cmap', msg)
rgbmap = viewer.get_rgbmap()
rgbmap.invert_cmap()
if msg:
viewer.onscreen_message("Inverted color map",
delay=1.0)
def _cycle_imap(self, viewer, msg, direction='down'):
if self.cancmap:
msg = self.settings.get('msg_imap', msg)
rgbmap = viewer.get_rgbmap()
im = rgbmap.get_imap()
imapname = im.name
imapnames = imap.get_names()
idx = imapnames.index(imapname)
if direction == 'down':
idx = (idx + 1) % len(imapnames)
else:
idx = idx - 1
if idx < 0:
idx = len(imapnames) - 1
imapname = imapnames[idx]
rgbmap.set_imap(imap.get_imap(imapname))
if msg:
viewer.onscreen_message("Intensity map: %s" % (imapname),
delay=1.0)
def _reset_imap(self, viewer, msg):
if self.cancmap:
msg = self.settings.get('msg_imap', msg)
rgbmap = viewer.get_rgbmap()
# default
imapname = 'ramp'
rgbmap.set_imap(imap.get_imap(imapname))
if msg:
viewer.onscreen_message("Intensity map: %s" % (imapname),
delay=1.0)
def _get_pct_xy(self, viewer, x, y):
win_wd, win_ht = viewer.get_window_size()
x_pct = float(x - self._start_x) / win_wd
y_pct = float(y - self._start_y) / win_ht
return (x_pct, y_pct)
def _rotate_xy(self, viewer, x, y, msg=True):
msg = self.settings.get('msg_rotate', msg)
ctr_x, ctr_y = viewer.get_center()
deg1 = math.degrees(math.atan2(ctr_y - self._start_y,
self._start_x - ctr_x))
deg2 = math.degrees(math.atan2(ctr_y - y, x - ctr_x))
delta_deg = deg2 - deg1
deg = math.fmod(self._start_rot + delta_deg, 360.0)
if msg:
viewer.onscreen_message("Rotate: %.2f" % (deg))
viewer.rotate(deg)
def _rotate_inc(self, viewer, inc_deg, msg=True):
msg = self.settings.get('msg_rotate_inc', msg)
cur_rot_deg = viewer.get_rotation()
rot_deg = math.fmod(cur_rot_deg + inc_deg, 360.0)
viewer.rotate(rot_deg)
if msg:
viewer.onscreen_message("Rotate Inc: (%.2f) %.2f" % (
inc_deg, rot_deg), delay=1.0)
def _orient(self, viewer, righthand=False, msg=True):
msg = self.settings.get('msg_orient', msg)
image = viewer.get_image()
(x, y, xn, yn, xe, ye) = image.calc_compass_center()
degn = math.degrees(math.atan2(xn - x, yn - y))
self.logger.info("degn=%f xe=%f ye=%f" % (
degn, xe, ye))
# rotate east point also by degn
xe2, ye2 = trcalc.rotate_pt(xe, ye, degn, xoff=x, yoff=y)
dege = math.degrees(math.atan2(xe2 - x, ye2 - y))
self.logger.info("dege=%f xe2=%f ye2=%f" % (
dege, xe2, ye2))
# if right-hand image, flip it to make left hand
xflip = righthand
if dege > 0.0:
xflip = not xflip
if xflip:
degn = - degn
viewer.transform(xflip, False, False)
viewer.rotate(degn)
if msg:
viewer.onscreen_message("Orient: rot=%.2f flipx=%s" % (
degn, str(xflip)), delay=1.0)
def _nav_naxis(self, viewer, axis, direction, msg=True):
"""Interactively change the slice of the image in a data cube
by scrolling.
"""
image = viewer.get_image()
if image is None:
return
mddata = image.get_mddata()
if len(mddata.shape) < (axis + 1):
# image dimensions < 3D
return
naxispath = list(image.naxispath)
axis_lim = mddata.shape[axis]
m = axis - 2
idx = naxispath[m]
if direction == 'down':
idx = (idx + 1) % axis_lim
else:
idx = idx - 1
if idx < 0:
idx = axis_lim - 1
naxispath[m] = idx
image.set_naxispath(naxispath)
def to_default_mode(self, viewer):
self.reset(viewer)
def pan_start(self, viewer, ptype=1):
self._pantype = ptype
def pan_set_origin(self, viewer, win_x, win_y, data_x, data_y):
self._start_x, self._start_y = viewer.window_to_offset(win_x, win_y)
self._start_panx, self._start_pany = viewer.get_pan()
def pan_stop(self, viewer):
self._start_x = None
self._pantype = 1
def restore_contrast(self, viewer, msg=True):
msg = self.settings.get('msg_cmap', msg)
rgbmap = viewer.get_rgbmap()
rgbmap.reset_sarr()
if msg:
viewer.onscreen_message("Restored contrast", delay=0.5)
return True
def restore_colormap(self, viewer, msg=True):
msg = self.settings.get('msg_cmap', msg)
rgbmap = viewer.get_rgbmap()
rgbmap.restore_cmap()
if msg:
viewer.onscreen_message("Restored color map", delay=0.5)
return True
##### KEYBOARD ACTION CALLBACKS #####
def kp_pan_set(self, viewer, event, data_x, data_y, msg=True):
"""Sets the pan position under the cursor."""
if self.canpan:
self._panset(viewer, data_x, data_y, msg=msg)
return True
def kp_pan_zoom_set(self, viewer, event, data_x, data_y, msg=True):
"""Sets the pan position under the cursor."""
if self.canpan:
reg = 1
with viewer.suppress_redraw:
viewer.panset_xy(data_x, data_y)
scale_x, scale_y = self._save.get((viewer, 'scale', reg),
(1.0, 1.0))
viewer.scale_to(scale_x, scale_y)
return True
def kp_pan_zoom_save(self, viewer, event, data_x, data_y, msg=True):
"""Save the current viewer scale for future use with
kp_pan_zoom_set()."""
reg = 1
scale = viewer.get_scale_xy()
self._save[(viewer, 'scale', reg)] = scale
if msg:
viewer.onscreen_message("Saved current scale", delay=0.5)
return True
def kp_pan_left(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_lr(viewer, amt, -0.1, msg=msg)
return True
def kp_pan_right(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_lr(viewer, amt, 0.1, msg=msg)
return True
def kp_pan_up(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_ud(viewer, amt, 0.1, msg=msg)
return True
def kp_pan_down(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_ud(viewer, amt, -0.1, msg=msg)
return True
def kp_pan_page_up(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_ud(viewer, amt, 1.0, msg=msg)
return True
def kp_pan_page_down(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
amt = self._get_key_pan_pct(event)
self.pan_ud(viewer, amt, -1.0, msg=msg)
return True
def kp_pan_home(self, viewer, event, data_x, data_y, msg=True):
res = self.calc_pan_pct(viewer, pad=0)
# 1.0 == max Y
self.pan_by_pct(viewer, res.pan_pct_x, 1.0)
def kp_pan_end(self, viewer, event, data_x, data_y, msg=True):
res = self.calc_pan_pct(viewer, pad=0)
# 0.0 == min Y
self.pan_by_pct(viewer, res.pan_pct_x, 0.0)
def kp_pan_px_xminus(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
px_amt = self.settings.get('key_pan_px_delta', 1.0)
self.pan_delta_px(viewer, -px_amt, 0.0)
return True
def kp_pan_px_xplus(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
px_amt = self.settings.get('key_pan_px_delta', 1.0)
self.pan_delta_px(viewer, px_amt, 0.0)
return True
def kp_pan_px_yminus(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
px_amt = self.settings.get('key_pan_px_delta', 1.0)
self.pan_delta_px(viewer, 0.0, -px_amt)
return True
def kp_pan_px_yplus(self, viewer, event, data_x, data_y, msg=True):
if not self.canpan:
return False
px_amt = self.settings.get('key_pan_px_delta', 1.0)
self.pan_delta_px(viewer, 0.0, px_amt)
return True
def kp_pan_px_center(self, viewer, event, data_x, data_y, msg=True):
"""This pans so that the cursor is over the center of the
current pixel."""
if not self.canpan:
return False
self.pan_center_px(viewer)
return True
def kp_center(self, viewer, event, data_x, data_y):
if self.canpan:
viewer.center_image()
return True
def kp_zoom_out(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
viewer.zoom_out()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def kp_zoom_in(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
viewer.zoom_in()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def kp_zoom(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
keylist = self.settings.get('kp_zoom')
try:
zoomval = (keylist.index(event.key) + 1)
except IndexError:
return False
viewer.zoom_to(zoomval)
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def kp_zoom_inv(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
keylist = self.settings.get('kp_zoom_inv')
try:
zoomval = - (keylist.index(event.key) + 1)
except IndexError:
return False
viewer.zoom_to(zoomval)
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def kp_zoom_fit(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
viewer.zoom_fit()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def kp_autozoom_toggle(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
val = viewer.get_settings().get('autozoom')
if val == 'off':
val = 'on'
else:
val = 'off'
viewer.enable_autozoom(val)
if msg:
viewer.onscreen_message('Autozoom %s' % val, delay=1.0)
return True
def kp_autozoom_override(self, viewer, event, data_x, data_y, msg=True):
if self.canzoom:
msg = self.settings.get('msg_zoom', msg)
viewer.enable_autozoom('override')
if msg:
viewer.onscreen_message('Autozoom Override', delay=1.0)
return True
def kp_cut_255(self, viewer, event, data_x, data_y, msg=True):
if self.cancut:
msg = self.settings.get('msg_cuts', msg)
viewer.cut_levels(0.0, 255.0, no_reset=True)
return True
def kp_cut_minmax(self, viewer, event, data_x, data_y, msg=True):
if self.cancut:
msg = self.settings.get('msg_cuts', msg)
image = viewer.get_image()
mn, mx = image.get_minmax(noinf=True)
viewer.cut_levels(mn, mx, no_reset=True)
return True
def kp_cut_auto(self, viewer, event, data_x, data_y, msg=True):
if self.cancut:
msg = self.settings.get('msg_cuts', msg)
if msg:
viewer.onscreen_message("Auto cut levels", delay=1.0)
viewer.auto_levels()
return True
def kp_autocuts_toggle(self, viewer, event, data_x, data_y, msg=True):
if self.cancut:
msg = self.settings.get('msg_cuts', msg)
val = viewer.get_settings().get('autocuts')
if val == 'off':
val = 'on'
else:
val = 'off'
viewer.enable_autocuts(val)
if msg:
viewer.onscreen_message('Autocuts %s' % val, delay=1.0)
return True
def kp_autocuts_override(self, viewer, event, data_x, data_y, msg=True):
if self.cancut:
msg = self.settings.get('msg_cuts', msg)
viewer.enable_autocuts('override')
if msg:
viewer.onscreen_message('Autocuts Override', delay=1.0)
return True
def kp_autocuts_alg_prev(self, viewer, event, data_x, data_y, msg=True):
self._cycle_cuts_alg(viewer, msg, direction='up')
return True
def kp_autocuts_alg_next(self, viewer, event, data_x, data_y, msg=True):
self._cycle_cuts_alg(viewer, msg, direction='down')
return True
def kp_autocenter_toggle(self, viewer, event, data_x, data_y, msg=True):
if self.canpan:
msg = self.settings.get('msg_pan', msg)
val = viewer.get_settings().get('autocenter')
if val == 'off':
val = 'on'
else:
val = 'off'
viewer.set_autocenter(val)
if msg:
viewer.onscreen_message('Autocenter %s' % val, delay=1.0)
return True
def kp_autocenter_override(self, viewer, event, data_x, data_y, msg=True):
if self.canpan:
msg = self.settings.get('msg_pan', msg)
viewer.set_autocenter('override')
if msg:
viewer.onscreen_message('Autocenter Override', delay=1.0)
return True
def kp_contrast_restore(self, viewer, event, data_x, data_y, msg=True):
if self.cancmap:
msg = self.settings.get('msg_cmap', msg)
self.restore_contrast(viewer, msg=msg)
return True
def kp_flip_x(self, viewer, event, data_x, data_y, msg=True):
if self.canflip:
msg = self.settings.get('msg_transform', msg)
flipX, flipY, swapXY = viewer.get_transforms()
if event.key == '[':
flipx = not flipX
else:
flipx = False
viewer.transform(flipx, flipY, swapXY)
if msg:
viewer.onscreen_message("Flip X=%s" % flipx, delay=1.0)
return True
def kp_flip_y(self, viewer, event, data_x, data_y, msg=True):
if self.canflip:
msg = self.settings.get('msg_transform', msg)
flipX, flipY, swapXY = viewer.get_transforms()
if event.key == ']':
flipy = not flipY
else:
flipy = False
viewer.transform(flipX, flipy, swapXY)
if msg:
viewer.onscreen_message("Flip Y=%s" % flipy, delay=1.0)
return True
def kp_swap_xy(self, viewer, event, data_x, data_y, msg=True):
if self.canflip:
msg = self.settings.get('msg_transform', msg)
flipX, flipY, swapXY = viewer.get_transforms()
if event.key == 'backslash':
swapxy = not swapXY
else:
swapxy = False
viewer.transform(flipX, flipY, swapxy)
if msg:
viewer.onscreen_message("Swap XY=%s" % swapxy, delay=1.0)
return True
def kp_dist(self, viewer, event, data_x, data_y, msg=True):
self._cycle_dist(viewer, msg)
return True
def kp_dist_reset(self, viewer, event, data_x, data_y, msg=True):
self._reset_dist(viewer, msg)
return True
def kp_dist_prev(self, viewer, event, data_x, data_y, msg=True):
self._cycle_dist(viewer, msg, direction='up')
return True
def kp_dist_next(self, viewer, event, data_x, data_y, msg=True):
self._cycle_dist(viewer, msg, direction='down')
return True
def kp_cmap_reset(self, viewer, event, data_x, data_y, msg=True):
self._reset_cmap(viewer, msg)
return True
def kp_cmap_restore(self, viewer, event, data_x, data_y, msg=True):
self.restore_colormap(viewer, msg)
return True
def kp_cmap_invert(self, viewer, event, data_x, data_y, msg=True):
self._invert_cmap(viewer, msg)
return True
def kp_cmap_prev(self, viewer, event, data_x, data_y, msg=True):
self._cycle_cmap(viewer, msg, direction='up')
return True
def kp_cmap_next(self, viewer, event, data_x, data_y, msg=True):
self._cycle_cmap(viewer, msg, direction='down')
return True
def kp_toggle_cbar(self, viewer, event, data_x, data_y, msg=True):
canvas = viewer.get_private_canvas()
# canvas already has a color bar?
objs = list(canvas.get_objects_by_kinds(('colorbar', 'drawablecolorbar')))
tf = (len(objs) == 0)
viewer.show_color_bar(tf)
return True
def kp_imap_reset(self, viewer, event, data_x, data_y, msg=True):
self._reset_imap(viewer, msg)
return True
def kp_imap_prev(self, viewer, event, data_x, data_y, msg=True):
self._cycle_imap(viewer, msg, direction='up')
return True
def kp_imap_next(self, viewer, event, data_x, data_y, msg=True):
self._cycle_imap(viewer, msg, direction='down')
return True
def kp_rotate_reset(self, viewer, event, data_x, data_y):
if self.canrotate:
viewer.rotate(0.0)
# also reset all transforms
viewer.transform(False, False, False)
return True
def kp_rotate_inc90(self, viewer, event, data_x, data_y, msg=True):
if self.canrotate:
self._rotate_inc(viewer, 90.0, msg=msg)
return True
def kp_rotate_dec90(self, viewer, event, data_x, data_y, msg=True):
if self.canrotate:
self._rotate_inc(viewer, -90.0, msg=msg)
return True
def kp_orient_lh(self, viewer, event, data_x, data_y, msg=True):
if self.canrotate:
self._orient(viewer, righthand=False, msg=msg)
return True
def kp_orient_rh(self, viewer, event, data_x, data_y,
msg=True):
if self.canrotate:
self._orient(viewer, righthand=True, msg=msg)
return True
def kp_reset(self, viewer, event, data_x, data_y):
self.reset(viewer)
return True
def _toggle_lock(self, viewer, mode_type):
bm = viewer.get_bindmap()
# toggle default mode type to locked/oneshot
dfl_modetype = bm.get_default_mode_type()
# get current mode
mode_name, cur_modetype = bm.current_mode()
if dfl_modetype in ('locked', 'softlock'):
if mode_type == dfl_modetype:
mode_type = 'oneshot'
# install the lock type
bm.set_default_mode_type(mode_type)
bm.set_mode(mode_name, mode_type=mode_type)
def kp_lock(self, viewer, event, data_x, data_y):
self._toggle_lock(viewer, 'locked')
return True
def kp_softlock(self, viewer, event, data_x, data_y):
self._toggle_lock(viewer, 'softlock')
return True
##### MOUSE ACTION CALLBACKS #####
## def ms_none(self, viewer, event, data_x, data_y):
## return False
## def ms_cursor(self, viewer, event, data_x, data_y):
## return False
## def ms_wheel(self, viewer, event, data_x, data_y):
## return False
## def ms_draw(self, viewer, event, data_x, data_y):
## return False
def ms_zoom(self, viewer, event, data_x, data_y, msg=True):
"""Zoom the image by dragging the cursor left or right.
"""
if not self.canzoom:
return True
msg = self.settings.get('msg_zoom', msg)
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._zoom_xy(viewer, x, y)
elif event.state == 'down':
if msg:
viewer.onscreen_message("Zoom (drag mouse L-R)",
delay=1.0)
self._start_x, self._start_y = x, y
else:
viewer.onscreen_message(None)
return True
def _scale_adjust(self, factor, event_amt, zoom_accel, max_limit=None):
# adjust scale by factor, amount encoded in event and zoom acceleration value
amount = factor - ((factor - 1.0) * (1.0 - min(event_amt, 15.0) / 15.0) *
zoom_accel)
amount = max(1.000000001, amount)
if max_limit is not None:
amount = min(amount, max_limit)
return amount
def ms_zoom_in(self, viewer, event, data_x, data_y, msg=False):
"""Zoom in one level by a mouse click.
"""
if not self.canzoom:
return True
if not (event.state == 'down'):
return True
with viewer.suppress_redraw:
viewer.panset_xy(data_x, data_y)
if self.settings.get('scroll_zoom_direct_scale', True):
zoom_accel = self.settings.get('scroll_zoom_acceleration', 1.0)
# change scale by 100%
amount = self._scale_adjust(2.0, 15.0, zoom_accel, max_limit=4.0)
self._scale_image(viewer, 0.0, amount, msg=msg)
else:
viewer.zoom_in()
if hasattr(viewer, 'center_cursor'):
viewer.center_cursor()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def ms_zoom_out(self, viewer, event, data_x, data_y, msg=False):
"""Zoom out one level by a mouse click.
"""
if not self.canzoom:
return True
if not (event.state == 'down'):
return True
with viewer.suppress_redraw:
# TODO: think about whether it is the correct behavior to
# set the pan position when zooming out
#viewer.panset_xy(data_x, data_y)
if self.settings.get('scroll_zoom_direct_scale', True):
zoom_accel = self.settings.get('scroll_zoom_acceleration', 1.0)
# change scale by 100%
amount = self._scale_adjust(2.0, 15.0, zoom_accel, max_limit=4.0)
self._scale_image(viewer, 180.0, amount, msg=msg)
else:
viewer.zoom_out()
if hasattr(viewer, 'center_cursor'):
viewer.center_cursor()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=1.0)
return True
def ms_rotate(self, viewer, event, data_x, data_y, msg=True):
"""Rotate the image by dragging the cursor left or right.
"""
if not self.canrotate:
return True
msg = self.settings.get('msg_rotate', msg)
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._rotate_xy(viewer, x, y)
elif event.state == 'down':
if msg:
viewer.onscreen_message("Rotate (drag around center)",
delay=1.0)
self._start_x, self._start_y = x, y
self._start_rot = viewer.get_rotation()
else:
viewer.onscreen_message(None)
return True
def ms_rotate_reset(self, viewer, event, data_x, data_y, msg=True):
if not self.canrotate:
return True
msg = self.settings.get('msg_rotate', msg)
if event.state == 'down':
viewer.rotate(0.0)
viewer.onscreen_message("Rotation reset", delay=0.5)
return True
def ms_contrast(self, viewer, event, data_x, data_y, msg=True):
"""Shift the colormap by dragging the cursor left or right.
Stretch the colormap by dragging the cursor up or down.
"""
if not self.cancmap:
return True
msg = self.settings.get('msg_contrast', msg)
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._tweak_colormap(viewer, x, y, 'preview')
elif event.state == 'down':
self._start_x, self._start_y = x, y
if msg:
viewer.onscreen_message(
"Shift and stretch colormap (drag mouse)", delay=1.0)
else:
viewer.onscreen_message(None)
return True
def ms_contrast_restore(self, viewer, event, data_x, data_y, msg=True):
"""An interactive way to restore the colormap contrast settings after
a warp operation.
"""
if self.cancmap and (event.state == 'down'):
self.restore_contrast(viewer, msg=msg)
return True
def ms_cmap_rotate(self, viewer, event, data_x, data_y, msg=True):
"""Shift the colormap by dragging the cursor left or right.
Stretch the colormap by dragging the cursor up or down.
"""
if not self.cancmap:
return True
msg = self.settings.get('msg_cmap', msg)
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._rotate_colormap(viewer, x, y, 'preview')
elif event.state == 'down':
self._start_x, self._start_y = x, y
if msg:
viewer.onscreen_message("Rotate colormap (drag mouse L/R)",
delay=1.0)
else:
viewer.onscreen_message(None)
return True
def ms_cmap_restore(self, viewer, event, data_x, data_y, msg=True):
"""An interactive way to restore the colormap settings after
a rotate or invert operation.
"""
if self.cancmap and (event.state == 'down'):
self.restore_colormap(viewer, msg)
return True
def ms_pan(self, viewer, event, data_x, data_y):
"""A 'drag' or proportional pan, where the image is panned by
'dragging the canvas' up or down. The amount of the pan is
proportionate to the length of the drag.
"""
if not self.canpan:
return True
x, y = viewer.get_last_win_xy()
if event.state == 'move':
data_x, data_y = self.get_new_pan(viewer, x, y,
ptype=self._pantype)
viewer.panset_xy(data_x, data_y)
elif event.state == 'down':
self.pan_set_origin(viewer, x, y, data_x, data_y)
self.pan_start(viewer, ptype=2)
else:
self.pan_stop(viewer)
return True
def ms_freepan(self, viewer, event, data_x, data_y):
"""A 'free' pan, where the image is panned by dragging the cursor
towards the area you want to see in the image. The entire image is
pannable by dragging towards each corner of the window.
"""
if not self.canpan:
return True
x, y = viewer.get_last_win_xy()
if event.state == 'move':
data_x, data_y = self.get_new_pan(viewer, x, y,
ptype=self._pantype)
viewer.panset_xy(data_x, data_y)
elif event.state == 'down':
self.pan_start(viewer, ptype=1)
else:
self.pan_stop(viewer)
return True
def ms_cutlo(self, viewer, event, data_x, data_y):
"""An interactive way to set the low cut level.
"""
if not self.cancut:
return True
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._cutlow_xy(viewer, x, y)
elif event.state == 'down':
self._start_x, self._start_y = x, y
self._loval, self._hival = viewer.get_cut_levels()
else:
viewer.onscreen_message(None)
return True
def ms_cuthi(self, viewer, event, data_x, data_y):
"""An interactive way to set the high cut level.
"""
if not self.cancut:
return True
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._cuthigh_xy(viewer, x, y)
elif event.state == 'down':
self._start_x, self._start_y = x, y
self._loval, self._hival = viewer.get_cut_levels()
else:
viewer.onscreen_message(None)
return True
def ms_cutall(self, viewer, event, data_x, data_y):
"""An interactive way to set the low AND high cut levels.
"""
if not self.cancut:
return True
x, y = self.get_win_xy(viewer)
if event.state == 'move':
self._cutboth_xy(viewer, x, y)
elif event.state == 'down':
self._start_x, self._start_y = x, y
image = viewer.get_image()
#self._loval, self._hival = viewer.get_cut_levels()
self._loval, self._hival = viewer.autocuts.calc_cut_levels(image)
else:
viewer.onscreen_message(None)
return True
def ms_cut_auto(self, viewer, event, data_x, data_y, msg=True):
return self.kp_cut_auto(viewer, event, data_x, data_y,
msg=msg)
def ms_panset(self, viewer, event, data_x, data_y,
msg=True):
"""An interactive way to set the pan position. The location
(data_x, data_y) will be centered in the window.
"""
if self.canpan and (event.state == 'down'):
self._panset(viewer, data_x, data_y, msg=msg)
return True
def ms_naxis(self, viewer, event, data_x, data_y, msg=True):
# TODO: be able to pick axis
axis = 2
x, y = self.get_win_xy(viewer)
image = viewer.get_image()
if image is None:
return
mddata = image.get_mddata()
if len(mddata.shape) < (axis + 1):
# image dimensions < 3D
return
naxispath = list(image.naxispath)
axis_lim = mddata.shape[axis]
m = axis - 2
if event.state in ('down', 'move'):
win_wd, win_ht = viewer.get_window_size()
x_pct = x / float(win_wd)
idx = int(x_pct * axis_lim)
naxispath[m] = idx
image.set_naxispath(naxispath)
return True
##### SCROLL ACTION CALLBACKS #####
def sc_cuts_coarse(self, viewer, event, msg=True):
"""Adjust cuts interactively by setting the low AND high cut
levels. This function adjusts it coarsely.
"""
if self.cancut:
# adjust the cut by 10% on each end
self._adjust_cuts(viewer, event.direction, 0.1, msg=msg)
return True
def sc_cuts_fine(self, viewer, event, msg=True):
"""Adjust cuts interactively by setting the low AND high cut
levels. This function adjusts it finely.
"""
if self.cancut:
# adjust the cut by 1% on each end
self._adjust_cuts(viewer, event.direction, 0.01, msg=msg)
return True
def sc_cuts_alg(self, viewer, event, msg=True):
"""Adjust cuts algorithm interactively.
"""
if self.cancut:
direction = self.get_direction(event.direction)
self._cycle_cuts_alg(viewer, msg, direction=direction)
return True
def zoom_step(self, viewer, event, msg=True, origin=None, adjust=1.5):
with viewer.suppress_redraw:
if origin is not None:
# get cartesian canvas coords of data item under cursor
data_x, data_y = origin[:2]
off_x, off_y = viewer.data_to_offset(data_x, data_y)
# set the pan position to the data item
viewer.set_pan(data_x, data_y)
# scale by the desired means
if self.settings.get('scroll_zoom_direct_scale', True):
zoom_accel = self.settings.get('scroll_zoom_acceleration', 1.0)
# change scale by 50%
amount = self._scale_adjust(adjust, event.amount, zoom_accel,
max_limit=4.0)
self._scale_image(viewer, event.direction, amount, msg=msg)
else:
rev = self.settings.get('zoom_scroll_reverse', False)
direction = self.get_direction(event.direction, rev=rev)
if direction == 'up':
viewer.zoom_in()
elif direction == 'down':
viewer.zoom_out()
if msg:
viewer.onscreen_message(viewer.get_scale_text(),
delay=0.4)
if origin is not None:
# now adjust the pan position to keep the offset
data_x2, data_y2 = viewer.offset_to_data(off_x, off_y)
dx, dy = data_x2 - data_x, data_y2 - data_y
viewer.panset_xy(data_x - dx, data_y - dy)
def _sc_zoom(self, viewer, event, msg=True, origin=None):
if not self.canzoom:
return True
msg = self.settings.get('msg_zoom', msg)
self.zoom_step(viewer, event, msg=msg, origin=origin,
adjust=1.5)
return True
def sc_zoom(self, viewer, event, msg=True):
"""Interactively zoom the image by scrolling motion.
This zooms by the zoom steps configured under Preferences.
"""
self._sc_zoom(viewer, event, msg=msg, origin=None)
return True
def sc_zoom_origin(self, viewer, event, msg=True):
"""Like sc_zoom(), but pans the image as well to keep the
coordinate under the cursor in that same position relative
to the window.
"""
origin = (event.data_x, event.data_y)
self._sc_zoom(viewer, event, msg=msg, origin=origin)
return True
def sc_zoom_coarse(self, viewer, event, msg=True):
"""Interactively zoom the image by scrolling motion.
This zooms by adjusting the scale in x and y coarsely.
"""
if not self.canzoom:
return True
zoom_accel = self.settings.get('scroll_zoom_acceleration', 1.0)
# change scale by 20%
amount = self._scale_adjust(1.2, event.amount, zoom_accel, max_limit=4.0)
self._scale_image(viewer, event.direction, amount, msg=msg)
return True
def sc_zoom_fine(self, viewer, event, msg=True):
"""Interactively zoom the image by scrolling motion.
This zooms by adjusting the scale in x and y coarsely.
"""
if not self.canzoom:
return True
zoom_accel = self.settings.get('scroll_zoom_acceleration', 1.0)
# change scale by 5%
amount = self._scale_adjust(1.05, event.amount, zoom_accel, max_limit=4.0)
self._scale_image(viewer, event.direction, amount, msg=msg)
return True
def sc_pan(self, viewer, event, msg=True):
"""Interactively pan the image by scrolling motion.
"""
if not self.canpan:
return True
# User has "Pan Reverse" preference set?
rev = self.settings.get('pan_reverse', False)
direction = event.direction
if rev:
direction = math.fmod(direction + 180.0, 360.0)
pan_accel = self.settings.get('scroll_pan_acceleration', 1.0)
# Internal factor to adjust the panning speed so that user-adjustable
# scroll_pan_acceleration is normalized to 1.0 for "normal" speed
scr_pan_adj_factor = 1.4142135623730951
amount = (event.amount * scr_pan_adj_factor * pan_accel) / 360.0
self.pan_omni(viewer, direction, amount)
return True
def sc_pan_coarse(self, viewer, event, msg=True):
event.amount = event.amount / 2.0
return self.sc_pan(viewer, event, msg=msg)
def sc_pan_fine(self, viewer, event, msg=True):
event.amount = event.amount / 5.0
return self.sc_pan(viewer, event, msg=msg)
def sc_naxis(self, viewer, event, msg=True):
"""Interactively change the slice of the image in a data cube
by scrolling.
"""
# TODO: be able to pick axis
axis = 2
direction = self.get_direction(event.direction)
return self._nav_naxis(viewer, axis, direction, msg=msg)
def sc_dist(self, viewer, event, msg=True):
"""Interactively change the color distribution algorithm
by scrolling.
"""
direction = self.get_direction(event.direction)
self._cycle_dist(viewer, msg, direction=direction)
return True
def sc_cmap(self, viewer, event, msg=True):
"""Interactively change the color map by scrolling.
"""
direction = self.get_direction(event.direction)
self._cycle_cmap(viewer, msg, direction=direction)
return True
def sc_imap(self, viewer, event, msg=True):
"""Interactively change the intensity map by scrolling.
"""
direction = self.get_direction(event.direction)
self._cycle_imap(viewer, msg, direction=direction)
return True
##### GESTURE ACTION CALLBACKS #####
def gs_pan(self, viewer, state, dx, dy, msg=True):
if not self.canpan:
return True
method = 1
x, y = viewer.get_last_win_xy()
# User has "Pan Reverse" preference set?
rev = self.settings.get('pan_reverse', False)
if rev:
dx, dy = -dx, -dy
if state == 'move':
# Internal factor to adjust the panning speed so that user-adjustable
# pan_pan_acceleration is normalized to 1.0 for "normal" speed
pan_pan_adj_factor = 1.0
pan_accel = (self.settings.get('pan_pan_acceleration', 1.0) *
pan_pan_adj_factor)
if method == 1:
# METHOD 1
# similar to moving by the scroll bars
# calculate current pan pct
res = self.calc_pan_pct(viewer, pad=0)
# modify the pct, as relative to the offsets
amt_x = float(dx) / res.rng_x * pan_accel
amt_y = float(dy) / res.rng_y * pan_accel
pct_x = res.pan_pct_x - amt_x
pct_y = res.pan_pct_y + amt_y
# update the pan position by pct
self.pan_by_pct(viewer, pct_x, pct_y)
elif method == 2:
# METHOD 2
# similar to using a drag pan
x, y = x + dx * pan_accel, y + dy * pan_accel
data_x, data_y = self.get_new_pan(viewer, x, y,
ptype=self._pantype)
viewer.panset_xy(data_x, data_y)
elif method == 3:
# METHOD 3
# calculate new position from pan gesture offsets
data_x, data_y = viewer.get_pan(coord='data')
x, y = viewer.get_canvas_xy(data_x, data_y)
x, y = x - dx * pan_accel, y - dy * pan_accel
data_x, data_y = viewer.get_data_xy(x, y)
viewer.panset_xy(data_x, data_y)
elif state == 'start':
#self._start_panx, self._start_pany = viewer.get_pan()
data_x, data_y = viewer.get_last_data_xy()
self.pan_set_origin(viewer, x, y, data_x, data_y)
self.pan_start(viewer, ptype=2)
else:
self.pan_stop(viewer)
return True
def gs_rotate(self, viewer, state, rot_deg, msg=True):
if state == 'start':
self._start_rot = viewer.get_rotation()
else:
msg_str = None
if self.canrotate:
deg = self._start_rot - rot_deg
rotate_accel = self.settings.get('pinch_rotate_acceleration', 1.0)
deg = rotate_accel * deg
viewer.rotate(deg)
if msg_str is None:
msg_str = "Rotate: %.2f" % (deg)
msg = self.settings.get('msg_rotate', msg)
if msg and (msg_str is not None):
viewer.onscreen_message(msg_str, delay=0.4)
return True
def _pinch_zoom_rotate(self, viewer, state, rot_deg, scale, msg=True,
origin=None):
pinch_actions = self.settings.get('pinch_actions', [])
with viewer.suppress_redraw:
if state == 'start':
self._start_scale_x, self._start_scale_y = viewer.get_scale_xy()
self._start_rot = viewer.get_rotation()
return True
if origin is not None:
# get cartesian canvas coords of data item under cursor
data_x, data_y = origin[:2]
off_x, off_y = viewer.data_to_offset(data_x, data_y)
# set the pan position to the data item
viewer.set_pan(data_x, data_y)
msg_str = None
if self.canzoom and ('zoom' in pinch_actions):
# scale by the desired means
scale_accel = self.settings.get('pinch_zoom_acceleration', 1.0)
scale = scale * scale_accel
# NOTE: scale reported by Qt (the only toolkit that really gives
# us a pinch gesture right now) the scale reports are iterative
# so it makes more sense to keep updating the scale than to base
# the scale on the original scale captured when the gesture starts
## scale_x, scale_y = (self._start_scale_x * scale,
## self._start_scale_y * scale)
scale_x, scale_y = viewer.get_scale_xy()
scale_x, scale_y = scale_x * scale, scale_y * scale
viewer.scale_to(scale_x, scale_y)
msg_str = viewer.get_scale_text()
msg = self.settings.get('msg_zoom', True)
if self.canrotate and ('rotate' in pinch_actions):
deg = self._start_rot - rot_deg
rotate_accel = self.settings.get('pinch_rotate_acceleration', 1.0)
deg = rotate_accel * deg
viewer.rotate(deg)
if msg_str is None:
msg_str = "Rotate: %.2f" % (deg)
msg = self.settings.get('msg_rotate', msg)
if origin is not None:
# now adjust the pan position to keep the offset
data_x2, data_y2 = viewer.offset_to_data(off_x, off_y)
dx, dy = data_x2 - data_x, data_y2 - data_y
viewer.panset_xy(data_x - dx, data_y - dy)
if msg and (msg_str is not None):
viewer.onscreen_message(msg_str, delay=0.4)
return True
def gs_pinch(self, viewer, state, rot_deg, scale, msg=True):
return self._pinch_zoom_rotate(viewer, state, rot_deg, scale, msg=msg)
def pi_zoom(self, viewer, event, msg=True):
"""Zoom and/or rotate the viewer by a pinch gesture.
(the back end must support gestures)
"""
return self._pinch_zoom_rotate(viewer, event.state, event.rot_deg,
event.scale, msg=msg)
def pi_zoom_origin(self, viewer, event, msg=True):
"""Like pi_zoom(), but pans the image as well to keep the
coordinate under the cursor in that same position relative
to the window.
"""
origin = (event.data_x, event.data_y)
return self._pinch_zoom_rotate(viewer, event.state, event.rot_deg,
event.scale, msg=msg, origin=origin)
def pa_pan(self, viewer, event, msg=True):
"""Interactively pan the image by a pan gesture.
(the back end must support gestures)
"""
return self.gs_pan(viewer, event.state,
event.delta_x, event.delta_y, msg=msg)
def _pa_synth_scroll_event(self, event):
dx, dy = float(event.delta_x), float(event.delta_y)
amount = math.sqrt(dx ** 2.0 + dy ** 2.0)
if dx == 0.0:
if dy > 0:
direction = 0.0
else:
direction = 180.0
else:
direction = math.atan(dy / dx)
self.logger.debug("scroll amount=%f direction=%f" % (
amount, direction))
# synthesize a scroll event
event = ScrollEvent(button=event.button, state=event.state,
mode=event.mode, modifiers=event.modifiers,
direction=direction, amount=amount,
data_x=event.data_x, data_y=event.data_y,
viewer=event.viewer)
return event
def pa_zoom(self, viewer, event, msg=True):
"""Interactively zoom the image by a pan gesture.
(the back end must support gestures)
"""
event = self._pa_synth_scroll_event(event)
if event.state != 'move':
return False
self._sc_zoom(viewer, event, msg=msg, origin=None)
return True
def pa_zoom_origin(self, viewer, event, msg=True):
"""Like pa_zoom(), but pans the image as well to keep the
coordinate under the cursor in that same position relative
to the window.
"""
event = self._pa_synth_scroll_event(event)
if event.state != 'move':
return False
origin = (event.data_x, event.data_y)
self._sc_zoom(viewer, event, msg=msg, origin=origin)
return True
def pa_naxis(self, viewer, event, msg=True):
"""Interactively change the slice of the image in a data cube
by pan gesture.
"""
event = self._pa_synth_scroll_event(event)
if event.state != 'move':
return False
# TODO: be able to pick axis
axis = 2
direction = self.get_direction(event.direction)
return self._nav_naxis(viewer, axis, direction, msg=msg)
##### CAMERA MOTION CALLBACKS #####
def get_camera(self, viewer):
renderer = viewer.renderer
if not hasattr(renderer, 'camera'):
return None, None
return renderer.camera
def sc_camera_track(self, viewer, event, msg=True):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return
delta = event.amount * 6
direction = self.get_direction(event.direction)
if direction == 'down':
delta = - delta
camera.track(delta)
viewer.gl_update()
return True
def ms_camera_orbit(self, viewer, event, data_x, data_y, msg=True):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return False
x, y = self.get_win_xy(viewer)
if event.state == 'move':
camera.orbit(self._start_x, self._start_y, x, y)
self._start_x, self._start_y = x, y
## pos = tuple(camera.position.get())
## mst = "Camera position: (%.4f, %.4f, %.4f)" % pos
## if msg:
## viewer.onscreen_message(mst, delay=0.5)
elif event.state == 'down':
self._start_x, self._start_y = x, y
## else:
## viewer.onscreen_message(None)
viewer.gl_update()
return True
def ms_camera_pan_delta(self, viewer, event, data_x, data_y, msg=True):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return False
x, y = self.get_win_xy(viewer)
if event.state == 'move':
dx, dy = x - self._start_x, self._start_y - y
camera.pan_delta(dx, dy)
self._start_x, self._start_y = x, y
elif event.state == 'down':
self._start_x, self._start_y = x, y
## if msg:
## viewer.onscreen_message("Camera translate", delay=1.0)
## else:
## viewer.onscreen_message(None)
viewer.gl_update()
return True
def kp_camera_reset(self, viewer, event, data_x, data_y):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return False
camera.reset()
viewer.onscreen_message("Reset camera", delay=0.5)
viewer.gl_update()
return True
def kp_camera_save(self, viewer, event, data_x, data_y):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return False
camera.save_positions()
viewer.onscreen_message("Saved camera position", delay=0.5)
return True
def kp_camera_toggle3d(self, viewer, event, data_x, data_y):
camera = self.get_camera(viewer)
if camera is None:
# this viewer doesn't have a camera
return False
renderer = viewer.renderer
renderer.mode3d = not renderer.mode3d
viewer.gl_update()
return True
class UIEvent(object):
pass
class KeyEvent(UIEvent):
def __init__(self, key=None, state=None, mode=None, modifiers=None,
data_x=None, data_y=None, viewer=None):
super(KeyEvent, self).__init__()
self.key = key
self.state = state
self.mode = mode
self.modifiers = modifiers
self.data_x = data_x
self.data_y = data_y
self.viewer = viewer
class PointEvent(UIEvent):
def __init__(self, button=None, state=None, mode=None, modifiers=None,
data_x=None, data_y=None, viewer=None):
super(PointEvent, self).__init__()
self.button = button
self.state = state
self.mode = mode
self.modifiers = modifiers
self.data_x = data_x
self.data_y = data_y
self.viewer = viewer
class ScrollEvent(UIEvent):
def __init__(self, button=None, state=None, mode=None, modifiers=None,
direction=None, amount=None, data_x=None, data_y=None,
viewer=None):
super(ScrollEvent, self).__init__()
self.button = button
self.state = state
self.mode = mode
self.modifiers = modifiers
self.direction = direction
self.amount = amount
self.data_x = data_x
self.data_y = data_y
self.viewer = viewer
class PinchEvent(UIEvent):
def __init__(self, button=None, state=None, mode=None, modifiers=None,
rot_deg=None, scale=None, data_x=None, data_y=None,
viewer=None):
super(PinchEvent, self).__init__()
self.button = button
self.state = state
self.mode = mode
self.modifiers = modifiers
self.rot_deg = rot_deg
self.scale = scale
self.data_x = data_x
self.data_y = data_y
self.viewer = viewer
class PanEvent(UIEvent):
def __init__(self, button=None, state=None, mode=None, modifiers=None,
delta_x=None, delta_y=None, data_x=None, data_y=None,
viewer=None):
super(PanEvent, self).__init__()
self.button = button
self.state = state
self.mode = mode
self.modifiers = modifiers
self.delta_x = delta_x
self.delta_y = delta_y
self.data_x = data_x
self.data_y = data_y
self.viewer = viewer
class BindingMapError(Exception):
pass
class BindingMapper(Callback.Callbacks):
"""The BindingMapper class maps physical events (key presses, button
clicks, mouse movement, etc) into logical events. By registering for
logical events, plugins and other event handling code doesn't need to
care about the physical controls bindings. The bindings can be changed
and everything continues to work.
"""
def __init__(self, logger, btnmap=None, mode_map=None, modifier_map=None):
Callback.Callbacks.__init__(self)
self.logger = logger
# For event mapping
self.event_names = ['keydown', 'keyup',
'btn-down', 'btn-move', 'btn-up',
'scroll', 'pinch', 'pan']
self.eventmap = {}
self._kbdmode = None
self._kbdmode_types = ('held', 'oneshot', 'locked', 'softlock')
self._kbdmode_type = 'held'
self._kbdmode_type_default = 'softlock'
self._delayed_reset = False
self._modifiers = frozenset([])
# Set up button mapping
if btnmap is None:
btnmap = {0x1: 'cursor', 0x2: 'wheel', 0x4: 'draw'}
self.btnmap = btnmap
self._button = 0
# Set up modifier mapping
if modifier_map is None:
self.modifier_map = {}
for keyname in ('shift_l', 'shift_r'):
self.add_modifier(keyname, 'shift')
for keyname in ('control_l', 'control_r'):
self.add_modifier(keyname, 'ctrl')
for keyname in ('meta_right',):
self.add_modifier(keyname, 'win')
else:
self.modifier_map = modifier_map
# Set up mode mapping
if mode_map is None:
self.mode_map = {}
else:
self.mode_map = mode_map
self._empty_set = frozenset([])
self.mode_tbl = dict()
# For callbacks
for name in ('mode-set', ):
self.enable_callback(name)
def add_modifier(self, keyname, modname):
bnch = Bunch.Bunch(name=modname)
self.modifier_map[keyname] = bnch
self.modifier_map['mod_%s' % modname] = bnch
def get_modifiers(self):
return set([bnch.name for keyname, bnch
in self.modifier_map.items()])
def clear_modifier_map(self):
self.modifier_map = {}
def set_mode_map(self, mode_map):
self.mode_map = mode_map
def clear_mode_map(self):
self.mode_map = {}
def has_mode(self, mode_name):
key = 'mode_%s' % mode_name
return key in self.mode_map
def remove_mode(self, mode_name):
key = 'mode_%s' % mode_name
del self.mode_map[key]
def current_mode(self):
return (self._kbdmode, self._kbdmode_type)
def get_modes(self):
return set([bnch.name for keyname, bnch in self.mode_map.items()])
def add_mode(self, keyname, mode_name, mode_type='held', msg=None):
if mode_type is not None:
assert mode_type in self._kbdmode_types, \
ValueError("Bad mode type '%s': must be one of %s" % (
mode_type, self._kbdmode_types))
bnch = Bunch.Bunch(name=mode_name, type=mode_type, msg=msg)
if keyname is not None:
# Key to launch this mode
if keyname[0:2] == '__':
keyname = keyname[2]
self.mode_tbl[keyname] = bnch
else:
self.mode_map[keyname] = bnch
self.mode_map['mode_%s' % mode_name] = bnch
def set_mode(self, name, mode_type=None):
if mode_type is None:
mode_type = self._kbdmode_type_default
assert mode_type in self._kbdmode_types, \
ValueError("Bad mode type '%s': must be one of %s" % (
mode_type, self._kbdmode_types))
self._kbdmode = name
if name is None:
# like a reset_mode()
mode_type = 'held'
self._delayed_reset = False
self._kbdmode_type = mode_type
self.logger.info("set keyboard mode to '%s' type=%s" % (name, mode_type))
self.make_callback('mode-set', self._kbdmode, self._kbdmode_type)
def set_default_mode_type(self, mode_type):
assert mode_type in self._kbdmode_types, \
ValueError("Bad mode type '%s': must be one of %s" % (
mode_type, self._kbdmode_types))
self._kbdmode_type_default = mode_type
def get_default_mode_type(self):
return self._kbdmode_type_default
def reset_mode(self, viewer):
try:
bnch = self.mode_map['mode_%s' % self._kbdmode]
except Exception:
bnch = None
self._kbdmode = None
self._kbdmode_type = 'held'
self._delayed_reset = False
self.logger.info("set keyboard mode reset")
# clear onscreen message, if any
if (bnch is not None) and (bnch.msg is not None):
viewer.onscreen_message(None)
self.make_callback('mode-set', self._kbdmode, self._kbdmode_type)
def clear_button_map(self):
self.btnmap = {}
def map_button(self, btncode, alias):
"""For remapping the buttons to different names. 'btncode' is a
fixed button code and 'alias' is a logical name.
"""
self.btnmap[btncode] = alias
def get_buttons(self):
return set([alias for keyname, alias in self.btnmap.items()])
def clear_event_map(self):
self.eventmap = {}
def map_event(self, mode, modifiers, trigger, eventname):
self.eventmap[(mode, frozenset(tuple(modifiers)),
trigger)] = Bunch.Bunch(name=eventname)
def register_for_events(self, viewer):
# Add callbacks for interesting events
viewer.add_callback('motion', self.window_motion)
viewer.add_callback('button-press', self.window_button_press)
viewer.add_callback('button-release', self.window_button_release)
viewer.add_callback('key-press', self.window_key_press)
viewer.add_callback('key-release', self.window_key_release)
## viewer.add_callback('drag-drop', self.window_drag_drop)
viewer.add_callback('scroll', self.window_scroll)
viewer.add_callback('map', self.window_map)
viewer.add_callback('focus', self.window_focus)
viewer.add_callback('enter', self.window_enter)
viewer.add_callback('leave', self.window_leave)
if viewer.has_callback('pinch'):
viewer.add_callback('pinch', self.window_pinch)
if viewer.has_callback('pan'):
viewer.add_callback('pan', self.window_pan)
for pfx in self.event_names:
# TODO: add moded versions of callbacks?
viewer.enable_callback('%s-none' % (pfx))
def mode_key_down(self, viewer, keyname):
"""This method is called when a key is pressed and was not handled
by some other handler with precedence, such as a subcanvas.
"""
# Is this a mode key?
if keyname not in self.mode_map:
if (keyname not in self.mode_tbl) or (self._kbdmode != 'meta'):
# No
return False
bnch = self.mode_tbl[keyname]
else:
bnch = self.mode_map[keyname]
mode_name = bnch.name
self.logger.debug("cur mode='%s' mode pressed='%s'" % (
self._kbdmode, mode_name))
if mode_name == self._kbdmode:
# <== same key was pressed that started the mode we're in
# standard handling is to close the mode when we press the
# key again that started that mode
self.reset_mode(viewer)
return True
if self._delayed_reset:
# <== this shouldn't happen, but put here to reset handling
# of delayed_reset just in case (see cursor up handling)
self._delayed_reset = False
return True
if ((self._kbdmode in (None, 'meta')) or
(self._kbdmode_type != 'locked') or (mode_name == 'meta')):
if self._kbdmode is not None:
self.reset_mode(viewer)
# activate this mode
if self._kbdmode in (None, 'meta'):
mode_type = bnch.type
if mode_type is None:
mode_type = self._kbdmode_type_default
self.set_mode(mode_name, mode_type)
if bnch.msg is not None:
viewer.onscreen_message(bnch.msg)
return True
return False
def mode_key_up(self, viewer, keyname):
"""This method is called when a key is pressed in a mode and was
not handled by some other handler with precedence, such as a
subcanvas.
"""
# Is this a mode key?
if keyname not in self.mode_map:
# <== no
return False
bnch = self.mode_map[keyname]
if self._kbdmode == bnch.name:
# <-- the current mode key is being released
if bnch.type == 'held':
if self._button == 0:
# if no button is being held, then reset mode
self.reset_mode(viewer)
else:
self._delayed_reset = True
return True
return False
def window_map(self, viewer):
return True
def window_focus(self, viewer, has_focus):
if not has_focus:
# fixes a problem with not receiving key release events when the
# window loses focus
self._modifiers = frozenset([])
return True
def window_enter(self, viewer):
return True
def window_leave(self, viewer):
return True
def window_key_press(self, viewer, keyname):
self.logger.debug("keyname=%s" % (keyname))
# Is this a modifer key?
if keyname in self.modifier_map:
bnch = self.modifier_map[keyname]
self._modifiers = self._modifiers.union(set([bnch.name]))
return True
if self.mode_key_down(viewer, keyname):
return True
trigger = 'kp_' + keyname
try:
if keyname == 'escape':
idx = (None, self._empty_set, trigger)
else:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = 'keydown-%s' % (emap.name)
except KeyError:
try:
# TEMP: hack to get around the issue of how keynames
# are generated--shifted characters with no modifiers
idx = (self._kbdmode, self._empty_set, trigger)
emap = self.eventmap[idx]
cbname = 'keydown-%s' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._empty_set, trigger)
emap = self.eventmap[idx]
cbname = 'keydown-%s' % (emap.name)
except KeyError:
cbname = 'key-down-%s' % str(self._kbdmode).lower()
self.logger.debug("idx=%s" % (str(idx)))
last_x, last_y = viewer.get_last_data_xy()
event = KeyEvent(key=keyname, state='down', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
data_x=last_x, data_y=last_y)
return viewer.make_ui_callback(cbname, event, last_x, last_y)
def window_key_release(self, viewer, keyname):
self.logger.debug("keyname=%s" % (keyname))
# Is this a modifer key?
if keyname in self.modifier_map:
bnch = self.modifier_map[keyname]
self._modifiers = self._modifiers.difference(set([bnch.name]))
return True
if self.mode_key_up(viewer, keyname):
return True
trigger = 'kp_' + keyname
try:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = 'keyup-%s' % (emap.name)
except KeyError:
try:
idx = (self._kbdmode, self._empty_set, trigger)
emap = self.eventmap[idx]
cbname = 'keyup-%s' % (emap.name)
except KeyError:
try:
idx = (None, self._empty_set, trigger)
emap = self.eventmap[idx]
cbname = 'keyup-%s' % (emap.name)
except KeyError:
cbname = 'key-up-%s' % str(self._kbdmode).lower()
last_x, last_y = viewer.get_last_data_xy()
event = KeyEvent(key=keyname, state='up', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
data_x=last_x, data_y=last_y)
return viewer.make_ui_callback(cbname, event, last_x, last_y)
def window_button_press(self, viewer, btncode, data_x, data_y):
self.logger.debug("x,y=%d,%d btncode=%s" % (data_x, data_y,
hex(btncode)))
self._button |= btncode
button = self.btnmap[btncode]
trigger = 'ms_' + button
try:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-down' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-down' % (emap.name)
except KeyError:
idx = None
cbname = 'btn-down-%s' % str(self._kbdmode).lower()
#self.logger.debug("Event map for %s" % (str(idx)))
self.logger.debug("making callback for %s (mode=%s)" % (
cbname, self._kbdmode))
event = PointEvent(button=button, state='down', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
data_x=data_x, data_y=data_y)
return viewer.make_ui_callback(cbname, event, data_x, data_y)
def window_motion(self, viewer, btncode, data_x, data_y):
button = self.btnmap[btncode]
trigger = 'ms_' + button
try:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-move' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-move' % (emap.name)
except KeyError:
idx = None
cbname = 'btn-move-%s' % str(self._kbdmode).lower()
## self.logger.debug("making callback for %s (mode=%s)" % (
## cbname, self._kbdmode))
event = PointEvent(button=button, state='move', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
data_x=data_x, data_y=data_y)
return viewer.make_ui_callback(cbname, event, data_x, data_y)
def window_button_release(self, viewer, btncode, data_x, data_y):
self.logger.debug("x,y=%d,%d button=%s" % (data_x, data_y,
hex(btncode)))
self._button &= ~btncode
button = self.btnmap[btncode]
trigger = 'ms_' + button
try:
idx = (self._kbdmode, self._modifiers, trigger)
# release mode if this is a oneshot mode
if (self._kbdmode_type == 'oneshot') or (self._delayed_reset):
self.reset_mode(viewer)
emap = self.eventmap[idx]
cbname = '%s-up' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-up' % (emap.name)
except KeyError:
idx = None
cbname = 'btn-up-%s' % str(self._kbdmode).lower()
event = PointEvent(button=button, state='up', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
data_x=data_x, data_y=data_y)
return viewer.make_ui_callback(cbname, event, data_x, data_y)
def window_scroll(self, viewer, direction, amount, data_x, data_y):
try:
idx = (self._kbdmode, self._modifiers, 'sc_scroll')
emap = self.eventmap[idx]
cbname = '%s-scroll' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, 'sc_scroll')
emap = self.eventmap[idx]
cbname = '%s-scroll' % (emap.name)
except KeyError:
idx = None
cbname = 'scroll-%s' % str(self._kbdmode).lower()
event = ScrollEvent(button='scroll', state='scroll', mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
direction=direction, amount=amount,
data_x=data_x, data_y=data_y)
return viewer.make_ui_callback(cbname, event)
def window_pinch(self, viewer, state, rot_deg, scale):
btncode = 0
button = self.btnmap[btncode]
trigger = 'pi_pinch'
try:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-pinch' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-pinch' % (emap.name)
except KeyError:
idx = None
cbname = 'pinch-%s' % (str(self._kbdmode).lower())
last_x, last_y = viewer.get_last_data_xy()
event = PinchEvent(button=button, state=state, mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
rot_deg=rot_deg, scale=scale,
data_x=last_x, data_y=last_y)
self.logger.debug("making callback for %s (mode=%s)" % (
cbname, self._kbdmode))
return viewer.make_ui_callback(cbname, event)
def window_pan(self, viewer, state, delta_x, delta_y):
btncode = 0
button = self.btnmap[btncode]
trigger = 'pa_pan'
try:
idx = (self._kbdmode, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-pan' % (emap.name)
except KeyError:
# no entry for this mode, try non-mode entry
try:
idx = (None, self._modifiers, trigger)
emap = self.eventmap[idx]
cbname = '%s-pan' % (emap.name)
except KeyError:
idx = None
cbname = 'pan-%s' % (str(self._kbdmode).lower())
last_x, last_y = viewer.get_last_data_xy()
event = PanEvent(button=button, state=state, mode=self._kbdmode,
modifiers=self._modifiers, viewer=viewer,
delta_x=delta_x, delta_y=delta_y,
data_x=last_x, data_y=last_y)
self.logger.debug("making callback for %s (mode=%s)" % (
cbname, self._kbdmode))
return viewer.make_ui_callback(cbname, event)
#END
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