def __init__(self, logger):
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
from ginga.gw import Widgets, Viewers, GwHelp
self.app = Widgets.Application(logger=logger)
self.app.add_callback('shutdown', self.quit)
self.top = self.app.make_window("Ginga example2")
self.top.add_callback('close', self.closed)
vbox = Widgets.VBox()
vbox.set_border_width(2)
vbox.set_spacing(1)
fi = Viewers.CanvasView(logger=logger)
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_zoom_algorithm('rate')
fi.set_zoomrate(1.4)
fi.show_pan_mark(True)
fi.set_callback('drag-drop', self.drop_file)
fi.set_callback('none-move', self.motion)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_setActive(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
# add a color bar
fi.private_canvas.add(self.dc.ColorBar(side='bottom', offset=10))
# add little mode indicator that shows modal states in
# lower left hand corner
fi.private_canvas.add(self.dc.ModeIndicator(corner='ur', fontsize=14))
# little hack necessary to get correct operation of the mode indicator
# in all circumstances
bm = fi.get_bindmap()
bm.add_callback('mode-set', lambda *args: fi.redraw(whence=3))
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.enable_edit(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.setSurface(fi)
self.canvas = canvas
# add canvas to view
fi.get_canvas().add(canvas)
canvas.ui_setActive(True)
canvas.register_for_cursor_drawing(fi)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
fi.set_desired_size(512, 512)
iw = Viewers.GingaViewerWidget(viewer=fi)
vbox.add_widget(iw, stretch=1)
self.readout = Widgets.Label("")
vbox.add_widget(self.readout, stretch=0)
hbox = Widgets.HBox()
hbox.set_border_width(2)
wdrawtype = Widgets.ComboBox()
for name in self.drawtypes:
wdrawtype.append_text(name)
index = self.drawtypes.index('rectangle')
wdrawtype.set_index(index)
wdrawtype.add_callback('activated',
lambda w, idx: self.set_drawparams())
self.wdrawtype = wdrawtype
wdrawcolor = Widgets.ComboBox()
for name in self.drawcolors:
wdrawcolor.append_text(name)
index = self.drawcolors.index('lightblue')
wdrawcolor.set_index(index)
wdrawcolor.add_callback('activated',
lambda w, idx: self.set_drawparams())
self.wdrawcolor = wdrawcolor
wfill = Widgets.CheckBox("Fill")
wfill.add_callback('activated', lambda w, tf: self.set_drawparams())
self.wfill = wfill
walpha = Widgets.SpinBox(dtype=float)
walpha.set_limits(0.0, 1.0, incr_value=0.1)
walpha.set_value(1.0)
walpha.set_decimals(2)
walpha.add_callback('value-changed',
lambda w, val: self.set_drawparams())
self.walpha = walpha
wclear = Widgets.Button("Clear Canvas")
wclear.add_callback('activated', lambda w: self.clear_canvas())
wopen = Widgets.Button("Open File")
wopen.add_callback('activated', lambda w: self.open_file())
wquit = Widgets.Button("Quit")
wquit.add_callback('activated', lambda w: self.quit())
hbox.add_widget(Widgets.Label(''), stretch=1)
for w in (wopen, wdrawtype, wdrawcolor, wfill, Widgets.Label('Alpha:'),
walpha, wclear, wquit):
hbox.add_widget(w, stretch=0)
vbox.add_widget(hbox, stretch=0)
mode = self.canvas.get_draw_mode()
hbox = Widgets.HBox()
btn1 = Widgets.RadioButton("Draw")
btn1.set_state(mode == 'draw')
btn1.add_callback('activated',
lambda w, val: self.set_mode_cb('draw', val))
btn1.set_tooltip("Choose this to draw on the canvas")
hbox.add_widget(btn1)
btn2 = Widgets.RadioButton("Edit", group=btn1)
btn2.set_state(mode == 'edit')
btn2.add_callback('activated',
lambda w, val: self.set_mode_cb('edit', val))
btn2.set_tooltip("Choose this to edit things on the canvas")
hbox.add_widget(btn2)
btn3 = Widgets.CheckBox("I'm using a trackpad")
btn3.add_callback('activated', lambda w, tf: self.use_trackpad_cb(tf))
hbox.add_widget(btn3)
hbox.add_widget(Widgets.Label(''), stretch=1)
vbox.add_widget(hbox, stretch=0)
self.top.set_widget(vbox)
self.fs = None
if hasattr(GwHelp, 'FileSelection'):
self.fs = GwHelp.FileSelection(self.top.get_widget())
def add_dialogs(self):
if hasattr(GwHelp, 'FileSelection'):
self.filesel = GwHelp.FileSelection(self.w.root.get_widget())
