def __init__(self, logger=None, rgbmap=None, settings=None):
ImageView.__init__(self,
logger=logger,
rgbmap=rgbmap,
settings=settings)
imgwin = Gtk.DrawingArea()
imgwin.connect("draw", self.draw_event)
imgwin.connect("configure-event", self.configure_event)
imgwin.set_events(Gdk.EventMask.EXPOSURE_MASK)
# prevents some flickering
imgwin.set_double_buffered(True)
imgwin.set_app_paintable(True)
# prevents extra redraws, because we manually redraw on a size
# change
imgwin.set_redraw_on_allocate(False)
self.imgwin = imgwin
self.imgwin.show_all()
# see reschedule_redraw() method
self._defer_task = GtkHelp.Timer()
self._defer_task.add_callback('expired',
lambda timer: self.delayed_redraw())
self.msgtask = GtkHelp.Timer()
self.msgtask.add_callback('expired',
lambda timer: self.onscreen_message(None))
def __init__(self, logger=None, rgbmap=None, settings=None):
ImageView.ImageViewBase.__init__(self,
logger=logger,
rgbmap=rgbmap,
settings=settings)
imgwin = Gtk.DrawingArea()
imgwin.connect("draw", self.draw_event)
imgwin.connect("configure-event", self.configure_event)
imgwin.set_events(Gdk.EventMask.EXPOSURE_MASK)
# prevents some flickering
imgwin.set_double_buffered(True)
imgwin.set_app_paintable(True)
# prevents extra redraws, because we manually redraw on a size
# change
imgwin.set_redraw_on_allocate(False)
self.imgwin = imgwin
self.imgwin.show_all()
self.t_.set_defaults(renderer='cairo')
# create our default double-buffered surface area that we copy
# to the widget
rect = self.imgwin.get_allocation()
x, y, wd, ht = rect.x, rect.y, rect.width, rect.height
arr = np.zeros((ht, wd, 4), dtype=np.uint8)
stride = cairo.ImageSurface.format_stride_for_width(
cairo.FORMAT_ARGB32, wd)
self.surface = cairo.ImageSurface.create_for_data(
arr, cairo.FORMAT_ARGB32, wd, ht, stride)
if sys.byteorder == 'little':
self.rgb_order = 'BGRA'
else:
self.rgb_order = 'ARGB'
# see reschedule_redraw() method
self._defer_task = GtkHelp.Timer()
self._defer_task.add_callback('expired',
lambda timer: self.delayed_redraw())
self.msgtask = GtkHelp.Timer()
self.msgtask.add_callback('expired',
lambda timer: self.onscreen_message(None))
self.renderer = None
# Pick a renderer that can work with us
renderers = ['cairo', 'agg', 'pil', 'opencv']
preferred = self.t_['renderer']
if preferred in renderers:
renderers.remove(preferred)
self.possible_renderers = [preferred] + renderers
self.choose_best_renderer()
def get_rgb_image_as_pixbuf(self):
dawd = self.surface.get_width()
daht = self.surface.get_height()
rgb_buf = bytes(self.surface.get_data())
pixbuf = GtkHelp.pixbuf_new_from_data(rgb_buf, GdkPixbuf.Colorspace.RGB, False, 8, dawd, daht, dawd * 3)
return pixbuf
def get_rgb_image_as_pixbuf(self):
dawd = self.surface.get_width()
daht = self.surface.get_height()
rgb_buf = bytes(self.surface.get_data())
pixbuf = GtkHelp.pixbuf_new_from_data(rgb_buf, GdkPixbuf.Colorspace.RGB,
False, 8, dawd, daht, dawd*3)
return pixbuf
def get_rgb_image_as_pixbuf(self):
arr8 = self.renderer.get_surface_as_array(order='RGB')
daht, dawd = arr8.shape[:2]
rgb_buf = arr8.tobytes(order='C')
pixbuf = GtkHelp.pixbuf_new_from_data(rgb_buf, GdkPixbuf.Colorspace.RGB,
False, 8, dawd, daht, dawd * 3)
return pixbuf
def scroll_event(self, widget, event):
# event.button, event.x, event.y
x = event.x
y = event.y
degrees, direction = GtkHelp.get_scroll_info(event)
self.logger.debug("scroll deg=%f direction=%f" % (degrees, direction))
data_x, data_y = self.get_data_xy(x, y)
self.last_data_x, self.last_data_y = data_x, data_y
return self.make_ui_callback('scroll', direction, degrees, data_x,
data_y)
def scroll_event(self, widget, event):
# event.button, event.x, event.y
x = event.x; y = event.y
degrees, direction = GtkHelp.get_scroll_info(event)
self.logger.debug("scroll deg=%f direction=%f" % (
degrees, direction))
data_x, data_y = self.get_data_xy(x, y)
self.last_data_x, self.last_data_y = data_x, data_y
return self.make_ui_callback('scroll', direction, degrees,
data_x, data_y)
def draw_event(self, widget, cr):
self.logger.debug("updating window from surface")
if six.PY2:
# redraw the screen from backing surface
cr.set_source_surface(self.surface, 0, 0)
else:
# see NOTE [1] above
arr8 = self.get_image_as_array()
pixbuf = GtkHelp.pixbuf_new_from_array(arr8, GdkPixbuf.Colorspace.RGB, 8)
Gdk.cairo_set_source_pixbuf(cr, pixbuf, 0, 0)
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.paint()
return False
def draw_event(self, widget, cr):
self.logger.debug("updating window from surface")
if six.PY2:
# redraw the screen from backing surface
cr.set_source_surface(self.surface, 0, 0)
else:
# see NOTE [1] above
arr8 = self.get_image_as_array()
pixbuf = GtkHelp.pixbuf_new_from_array(arr8,
GdkPixbuf.Colorspace.RGB, 8)
Gdk.cairo_set_source_pixbuf(cr, pixbuf, 0, 0)
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.paint()
return False
def __init__(self, logger):
self.logger = logger
root = Gtk.Window(title="ImageViewZoom Example")
root.set_border_width(2)
root.connect("delete_event", lambda w, e: self.quit(w))
self.root = root
self.select = GtkHelp.FileSelection(root)
vbox = Gtk.VBox(spacing=2)
# create the ginga viewer and configure it
fi = CanvasView(logger)
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.set_callback('drag-drop', self.drop_file)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
fi.enable_auto_orient(True)
self.fitsimage = fi
# enable some user interaction
bd = fi.get_bindings()
bd.enable_all(True)
w = fi.get_widget()
w.set_size_request(512, 512)
# add scrollbar interface around this viewer
si = ScrolledView(fi)
si.scroll_bars(horizontal='on', vertical='on')
vbox.pack_start(si, True, True, 0)
hbox = Gtk.HButtonBox()
hbox.set_layout(Gtk.ButtonBoxStyle.END)
wopen = Gtk.Button(label="Open File")
wopen.connect('clicked', self.open_file)
wquit = Gtk.Button(label="Quit")
wquit.connect('clicked', self.quit)
for w in (wopen, wquit):
hbox.add(w)
vbox.pack_start(hbox, False, False, 0)
root.add(vbox)
def scroll_event(self, widget, event):
# event.button, event.x, event.y
x = event.x
y = event.y
self.last_win_x, self.last_win_y = x, y
# NOTE: for future use in distinguishing mouse wheel vs.
# trackpad events
dev = event.get_source_device()
src = 'mouse'
if dev is not None:
_src = dev.get_source()
if _src == Gdk.InputSource.TOUCHPAD:
src == 'touchpad'
degrees, direction = GtkHelp.get_scroll_info(event)
self.logger.debug("scroll deg=%f direction=%f" % (degrees, direction))
data_x, data_y = self.check_cursor_location()
return self.make_ui_callback('scroll', direction, degrees, data_x,
data_y)
def scroll_event(self, widget, event):
# event.button, event.x, event.y
x = event.x
y = event.y
self.last_win_x, self.last_win_y = x, y
# NOTE: for future use in distinguishing mouse wheel vs.
# trackpad events
dev = event.get_source_device()
src = "mouse"
if dev is not None:
_src = dev.get_source()
if _src == Gdk.InputSource.TOUCHPAD:
src == "touchpad"
degrees, direction = GtkHelp.get_scroll_info(event)
self.logger.debug("scroll deg=%f direction=%f" % (degrees, direction))
data_x, data_y = self.get_data_xy(x, y)
self.last_data_x, self.last_data_y = data_x, data_y
return self.make_ui_callback("scroll", direction, degrees, data_x, data_y)
def get_plain_image_as_pixbuf(self):
arr = self.getwin_array(order='RGB', dtype=np.uint8)
pixbuf = GtkHelp.pixbuf_new_from_array(arr, GdkPixbuf.Colorspace.RGB,
8)
return pixbuf
def __init__(self, logger):
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
root = Gtk.Window(title="Gtk3 CanvasView Example")
root.set_border_width(2)
root.connect("delete_event", lambda w, e: quit(w))
self.root = root
self.select = GtkHelp.FileSelection(root)
vbox = Gtk.VBox(spacing=2)
fi = CanvasView(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)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.set_drawtype("rectangle", color="lightblue")
canvas.setSurface(fi)
self.canvas = canvas
# add canvas to view
private_canvas = fi.get_canvas()
private_canvas.register_for_cursor_drawing(fi)
private_canvas.add(canvas)
canvas.ui_setActive(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
# add a color bar
fi.show_color_bar(True)
# add little mode indicator that shows keyboard modal states
fi.show_mode_indicator(True, corner="ur")
w = fi.get_widget()
w.set_size_request(512, 512)
vbox.pack_start(w, True, True, 1)
self.readout = Gtk.Label("")
vbox.pack_start(self.readout, False, False, 0)
hbox = Gtk.HBox(spacing=5)
wdrawtype = GtkHelp.combo_box_new_text()
index = 0
for name in self.drawtypes:
wdrawtype.insert_text(index, name)
index += 1
index = self.drawtypes.index("rectangle")
wdrawtype.set_active(index)
wdrawtype.connect("changed", self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = GtkHelp.combo_box_new_text()
index = 0
for name in self.drawcolors:
wdrawcolor.insert_text(index, name)
index += 1
index = self.drawcolors.index("lightblue")
wdrawcolor.set_active(index)
wdrawcolor.connect("changed", self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = GtkHelp.CheckButton("Fill")
wfill.sconnect("toggled", self.set_drawparams)
self.wfill = wfill
walpha = GtkHelp.SpinButton()
adj = walpha.get_adjustment()
adj.configure(0.0, 0.0, 1.0, 0.1, 0.1, 0)
walpha.set_value(1.0)
walpha.set_digits(1)
walpha.sconnect("value-changed", self.set_drawparams)
self.walpha = walpha
wclear = Gtk.Button("Clear Canvas")
wclear.connect("clicked", self.clear_canvas)
wopen = Gtk.Button("Open File")
wopen.connect("clicked", self.open_file)
wquit = Gtk.Button("Quit")
wquit.connect("clicked", quit)
for w in (wquit, wclear, walpha, Gtk.Label("Alpha:"), wfill, wdrawcolor, wdrawtype, wopen):
hbox.pack_end(w, False, False, 0)
vbox.pack_start(hbox, False, False, 0)
root.add(vbox)
def make_timer(self):
return GtkHelp.Timer()
def make_cursor(self, iconpath, x, y):
cursor = GtkHelp.make_cursor(self.imgwin, iconpath, x, y)
return cursor
def make_cursor(self, iconpath, x, y):
cursor = GtkHelp.make_cursor(self.imgwin, iconpath, x, y)
return cursor
def __init__(self, logger):
self.logger = logger
self.drawcolors = colors.get_colors()
self.dc = get_canvas_types()
root = Gtk.Window(title="Gtk3 CanvasView Example")
root.set_border_width(2)
root.connect("delete_event", lambda w, e: quit(w))
self.root = root
self.select = GtkHelp.FileSelection(root)
vbox = Gtk.VBox(spacing=2)
fi = CanvasView(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_cb)
fi.set_callback('cursor-changed', self.cursor_cb)
fi.set_bg(0.2, 0.2, 0.2)
fi.ui_set_active(True)
self.fitsimage = fi
bd = fi.get_bindings()
bd.enable_all(True)
# canvas that we will draw on
canvas = self.dc.DrawingCanvas()
canvas.enable_draw(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.set_surface(fi)
self.canvas = canvas
# add canvas to view
private_canvas = fi.get_canvas()
private_canvas.register_for_cursor_drawing(fi)
private_canvas.add(canvas)
canvas.ui_set_active(True)
self.drawtypes = canvas.get_drawtypes()
self.drawtypes.sort()
# add a color bar
fi.show_color_bar(True)
fi.show_focus_indicator(True)
# add little mode indicator that shows keyboard modal states
fi.show_mode_indicator(True, corner='ur')
w = fi.get_widget()
w.set_size_request(512, 512)
vbox.pack_start(w, True, True, 1)
self.readout = Gtk.Label("")
vbox.pack_start(self.readout, False, False, 0)
hbox = Gtk.HBox(spacing=5)
wdrawtype = GtkHelp.combo_box_new_text()
index = 0
for name in self.drawtypes:
wdrawtype.insert_text(index, name)
index += 1
index = self.drawtypes.index('rectangle')
wdrawtype.set_active(index)
wdrawtype.connect('changed', self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = GtkHelp.combo_box_new_text()
index = 0
for name in self.drawcolors:
wdrawcolor.insert_text(index, name)
index += 1
index = self.drawcolors.index('lightblue')
wdrawcolor.set_active(index)
wdrawcolor.connect('changed', self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = GtkHelp.CheckButton("Fill")
wfill.sconnect('toggled', self.set_drawparams)
self.wfill = wfill
walpha = GtkHelp.SpinButton()
adj = walpha.get_adjustment()
adj.configure(0.0, 0.0, 1.0, 0.1, 0.1, 0)
walpha.set_value(1.0)
walpha.set_digits(1)
walpha.sconnect('value-changed', self.set_drawparams)
self.walpha = walpha
wclear = Gtk.Button("Clear Canvas")
wclear.connect('clicked', self.clear_canvas)
wopen = Gtk.Button("Open File")
wopen.connect('clicked', self.open_file)
wquit = Gtk.Button("Quit")
wquit.connect('clicked', quit)
for w in (wquit, wclear, walpha, Gtk.Label("Alpha:"), wfill,
wdrawcolor, wdrawtype, wopen):
hbox.pack_end(w, False, False, 0)
vbox.pack_start(hbox, False, False, 0)
root.add(vbox)
def __init__(self, logger=None, rgbmap=None, settings=None):
ImageViewGtk.__init__(self,
logger=logger,
rgbmap=rgbmap,
settings=settings)
imgwin = self.imgwin
imgwin.set_can_focus(True)
imgwin.connect("map_event", self.map_event)
imgwin.connect("focus_in_event", self.focus_event, True)
imgwin.connect("focus_out_event", self.focus_event, False)
imgwin.connect("enter_notify_event", self.enter_notify_event)
imgwin.connect("leave_notify_event", self.leave_notify_event)
imgwin.connect("motion_notify_event", self.motion_notify_event)
imgwin.connect("button_press_event", self.button_press_event)
imgwin.connect("button_release_event", self.button_release_event)
imgwin.connect("key_press_event", self.key_press_event)
imgwin.connect("key_release_event", self.key_release_event)
imgwin.connect("scroll_event", self.scroll_event)
mask = imgwin.get_events()
imgwin.set_events(mask
| Gdk.EventMask.ENTER_NOTIFY_MASK
| Gdk.EventMask.LEAVE_NOTIFY_MASK
| Gdk.EventMask.FOCUS_CHANGE_MASK
| Gdk.EventMask.STRUCTURE_MASK
| Gdk.EventMask.BUTTON_PRESS_MASK
| Gdk.EventMask.BUTTON_RELEASE_MASK
| Gdk.EventMask.KEY_PRESS_MASK
| Gdk.EventMask.KEY_RELEASE_MASK
| Gdk.EventMask.POINTER_MOTION_MASK
| Gdk.EventMask.POINTER_MOTION_HINT_MASK
| Gdk.EventMask.SCROLL_MASK)
# Set up widget as a drag and drop destination
imgwin.connect("drag-data-received", self.drop_event_cb)
imgwin.connect("drag-motion", self.drag_motion_cb)
imgwin.connect("drag-drop", self.drag_drop_cb)
self.TARGET_TYPE_TEXT = 0
imgwin.drag_dest_set(Gtk.DestDefaults.ALL, [], Gdk.DragAction.COPY)
imgwin.drag_dest_add_text_targets()
# last known window mouse position
self.last_win_x = 0
self.last_win_y = 0
# last known data mouse position
self.last_data_x = 0
self.last_data_y = 0
# Does widget accept focus when mouse enters window
self.enter_focus = self.t_.get('enter_focus', True)
# @$%&^(_)*&^ gnome!!
self._keytbl = {
'shift_l': 'shift_l',
'shift_r': 'shift_r',
'control_l': 'control_l',
'control_r': 'control_r',
'alt_l': 'alt_l',
'alt_r': 'alt_r',
'super_l': 'super_l',
'super_r': 'super_r',
'meta_right': 'meta_right',
'asciitilde': '~',
'grave': 'backquote',
'exclam': '!',
'at': '@',
'numbersign': '#',
'percent': '%',
'asciicircum': '^',
'ampersand': '&',
'asterisk': '*',
'dollar': '$',
'parenleft': '(',
'parenright': ')',
'underscore': '_',
'minus': '-',
'plus': '+',
'equal': '=',
'braceleft': '{',
'braceright': '}',
'bracketleft': '[',
'bracketright': ']',
'bar': '|',
'colon': ':',
'semicolon': ';',
'quotedbl': 'doublequote',
'apostrophe': 'singlequote',
'backslash': 'backslash',
'less': '<',
'greater': '>',
'comma': ',',
'period': '.',
'question': '?',
'slash': '/',
'space': 'space',
'escape': 'escape',
'return': 'return',
'tab': 'tab',
'f1': 'f1',
'f2': 'f2',
'f3': 'f3',
'f4': 'f4',
'f5': 'f5',
'f6': 'f6',
'f7': 'f7',
'f8': 'f8',
'f9': 'f9',
'f10': 'f10',
'f11': 'f11',
'f12': 'f12',
'right': 'right',
'left': 'left',
'up': 'up',
'down': 'down',
}
# Define cursors
for curname, filename in (('pan', 'openHandCursor.png'),
('pick', 'thinCrossCursor.png')):
path = os.path.join(icon_dir, filename)
cur = GtkHelp.make_cursor(self.imgwin, path, 8, 8)
self.define_cursor(curname, cur)
for name in (
'motion',
'button-press',
'button-release',
'key-press',
'key-release',
'drag-drop',
'scroll',
'map',
'focus',
'enter',
'leave',
):
self.enable_callback(name)
def __init__(self, logger=None, rgbmap=None, settings=None):
ImageViewGtk.__init__(self, logger=logger, rgbmap=rgbmap,
settings=settings)
imgwin = self.imgwin
imgwin.set_can_focus(True)
imgwin.connect("map_event", self.map_event)
imgwin.connect("focus_in_event", self.focus_event, True)
imgwin.connect("focus_out_event", self.focus_event, False)
imgwin.connect("enter_notify_event", self.enter_notify_event)
imgwin.connect("leave_notify_event", self.leave_notify_event)
imgwin.connect("motion_notify_event", self.motion_notify_event)
imgwin.connect("button_press_event", self.button_press_event)
imgwin.connect("button_release_event", self.button_release_event)
imgwin.connect("key_press_event", self.key_press_event)
imgwin.connect("key_release_event", self.key_release_event)
imgwin.connect("scroll_event", self.scroll_event)
mask = imgwin.get_events()
imgwin.set_events(mask
| Gdk.EventMask.ENTER_NOTIFY_MASK
| Gdk.EventMask.LEAVE_NOTIFY_MASK
| Gdk.EventMask.FOCUS_CHANGE_MASK
| Gdk.EventMask.STRUCTURE_MASK
| Gdk.EventMask.BUTTON_PRESS_MASK
| Gdk.EventMask.BUTTON_RELEASE_MASK
| Gdk.EventMask.KEY_PRESS_MASK
| Gdk.EventMask.KEY_RELEASE_MASK
| Gdk.EventMask.POINTER_MOTION_MASK
| Gdk.EventMask.POINTER_MOTION_HINT_MASK
| Gdk.EventMask.SCROLL_MASK)
# Set up widget as a drag and drop destination
imgwin.connect("drag-data-received", self.drop_event_cb)
imgwin.connect("drag-motion", self.drag_motion_cb)
imgwin.connect("drag-drop", self.drag_drop_cb)
self.TARGET_TYPE_TEXT = 0
imgwin.drag_dest_set(Gtk.DestDefaults.ALL, [],
Gdk.DragAction.COPY)
imgwin.drag_dest_add_text_targets()
# last known window mouse position
self.last_win_x = 0
self.last_win_y = 0
# last known data mouse position
self.last_data_x = 0
self.last_data_y = 0
# Does widget accept focus when mouse enters window
self.enter_focus = self.t_.get('enter_focus', True)
# @$%&^(_)*&^ gnome!!
self._keytbl = {
'shift_l': 'shift_l',
'shift_r': 'shift_r',
'control_l': 'control_l',
'control_r': 'control_r',
'alt_l': 'alt_l',
'alt_r': 'alt_r',
'super_l': 'super_l',
'super_r': 'super_r',
'meta_right': 'meta_right',
'asciitilde': '~',
'grave': 'backquote',
'exclam': '!',
'at': '@',
'numbersign': '#',
'percent': '%',
'asciicircum': '^',
'ampersand': '&',
'asterisk': '*',
'dollar': '$',
'parenleft': '(',
'parenright': ')',
'underscore': '_',
'minus': '-',
'plus': '+',
'equal': '=',
'braceleft': '{',
'braceright': '}',
'bracketleft': '[',
'bracketright': ']',
'bar': '|',
'colon': ':',
'semicolon': ';',
'quotedbl': 'doublequote',
'apostrophe': 'singlequote',
'backslash': 'backslash',
'less': '<',
'greater': '>',
'comma': ',',
'period': '.',
'question': '?',
'slash': '/',
'space': 'space',
'escape': 'escape',
'return': 'return',
'tab': 'tab',
'f1': 'f1',
'f2': 'f2',
'f3': 'f3',
'f4': 'f4',
'f5': 'f5',
'f6': 'f6',
'f7': 'f7',
'f8': 'f8',
'f9': 'f9',
'f10': 'f10',
'f11': 'f11',
'f12': 'f12',
'right': 'right',
'left': 'left',
'up': 'up',
'down': 'down',
}
# Define cursors
for curname, filename in (('pan', 'openHandCursor.png'),
('pick', 'thinCrossCursor.png')):
path = os.path.join(icon_dir, filename)
cur = GtkHelp.make_cursor(self.imgwin, path, 8, 8)
self.define_cursor(curname, cur)
for name in ('motion', 'button-press', 'button-release',
'key-press', 'key-release', 'drag-drop',
'scroll', 'map', 'focus', 'enter', 'leave',
):
self.enable_callback(name)
def __init__(self, logger):
self.logger = logger
self.drawcolors = colors.get_colors()
root = Gtk.Window(title="ImageViewCanvas Example")
root.set_border_width(2)
root.connect("delete_event", lambda w, e: quit(w))
self.root = root
self.select = GtkHelp.FileSelection(root)
vbox = Gtk.VBox(spacing=2)
fi = ImageViewCanvas(logger)
fi.enable_autocuts('on')
fi.set_autocut_params('zscale')
fi.enable_autozoom('on')
fi.enable_draw(False)
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)
# canvas that we will draw on
canvas = DrawingCanvas()
canvas.enable_draw(True)
canvas.set_drawtype('rectangle', color='lightblue')
canvas.setSurface(fi)
self.canvas = canvas
# add canvas to view
fi.add(canvas)
canvas.ui_setActive(True)
w = fi.get_widget()
w.set_size_request(512, 512)
vbox.pack_start(w, True, True, 1)
self.readout = Gtk.Label("")
vbox.pack_start(self.readout, False, False, 0)
hbox = Gtk.HBox(spacing=5)
wdrawtype = GtkHelp.combo_box_new_text()
self.drawtypes = fi.get_drawtypes()
index = 0
for name in self.drawtypes:
wdrawtype.insert_text(index, name)
index += 1
index = self.drawtypes.index('rectangle')
wdrawtype.set_active(index)
wdrawtype.connect('changed', self.set_drawparams)
self.wdrawtype = wdrawtype
wdrawcolor = GtkHelp.combo_box_new_text()
index = 0
for name in self.drawcolors:
wdrawcolor.insert_text(index, name)
index += 1
index = self.drawcolors.index('lightblue')
wdrawcolor.set_active(index)
wdrawcolor.connect('changed', self.set_drawparams)
self.wdrawcolor = wdrawcolor
wfill = GtkHelp.CheckButton("Fill")
wfill.sconnect('toggled', self.set_drawparams)
self.wfill = wfill
walpha = GtkHelp.SpinButton()
adj = walpha.get_adjustment()
adj.configure(0.0, 0.0, 1.0, 0.1, 0.1, 0)
walpha.set_value(1.0)
walpha.set_digits(1)
walpha.sconnect('value-changed', self.set_drawparams)
self.walpha = walpha
wclear = Gtk.Button("Clear Canvas")
wclear.connect('clicked', self.clear_canvas)
wopen = Gtk.Button("Open File")
wopen.connect('clicked', self.open_file)
wquit = Gtk.Button("Quit")
wquit.connect('clicked', quit)
for w in (wquit, wclear, walpha, Gtk.Label("Alpha:"),
wfill, wdrawcolor, wdrawtype, wopen):
hbox.pack_end(w, False, False, 0)
vbox.pack_start(hbox, False, False, 0)
root.add(vbox)
def get_image_as_pixbuf(self):
arr = self.getwin_array(order='RGB')
pixbuf = GtkHelp.pixbuf_new_from_array(arr,
GdkPixbuf.Colorspace.RGB,
8)
return pixbuf
