def __init__(self, logger=None, rgbmap=None, settings=None, render=None):
ImageView.ImageViewBase.__init__(self,
logger=logger,
rgbmap=rgbmap,
settings=settings)
# Set this to the order in which you want channels stacked
# in the numpy array delivered for writing to the off-screen
# pixmap for your widget set
self.rgb_order = 'BGRA'
self.renderer = CanvasRenderer(self)
self.t_.setDefaults(show_pan_position=False, onscreen_ff='Sans Serif')
# This holds the off-screen pixel map. It's creation is usually
# deferred until we know the final size of the window.
self.pixmap = None
# This holds the native image RGB or canvas widget. You should
# create it here
self.imgwin = None
# override default
#self.defer_redraw = False
self.rgb_fh = RGBFileHandler(self.logger)
def __init__(self, logger=None, rgbmap=None, settings=None, render=None):
ImageView.ImageViewBase.__init__(self, logger=logger,
rgbmap=rgbmap, settings=settings)
# Set this to the order in which you want channels stacked
# in the numpy array delivered for writing to the off-screen
# pixmap for your widget set
self._rgb_order = 'BGRA'
self.renderer = CanvasRenderer(self)
self.t_.setDefaults(show_pan_position=False,
onscreen_ff='Sans Serif')
self.message = None
# This holds the off-screen pixel map. It's creation is usually
# deferred until we know the final size of the window.
self.pixmap = None
# This holds the native image RGB or canvas widget. You should
# create it here
self.imgwin = None
# cursors
self.cursor = {}
# override default
#self.defer_redraw = False
self.rgb_fh = RGBFileHandler(self.logger)
class ImageViewMock(ImageView.ImageViewBase):
def __init__(self, logger=None, rgbmap=None, settings=None, render=None):
ImageView.ImageViewBase.__init__(self,
logger=logger,
rgbmap=rgbmap,
settings=settings)
# Set this to the order in which you want channels stacked
# in the numpy array delivered for writing to the off-screen
# pixmap for your widget set
self.rgb_order = 'BGRA'
self.renderer = CanvasRenderer(self)
self.t_.setDefaults(show_pan_position=False, onscreen_ff='Sans Serif')
# This holds the off-screen pixel map. It's creation is usually
# deferred until we know the final size of the window.
self.pixmap = None
# This holds the native image RGB or canvas widget. You should
# create it here
self.imgwin = None
# override default
#self.defer_redraw = False
self.rgb_fh = RGBFileHandler(self.logger)
def get_widget(self):
"""
Call this method to extract the widget to pack into your GUI
when you are building the viewer into things.
"""
return self.imgwin
def get_surface(self):
# for compatibility with agg and opencv backends
surface = self.getwin_array(order=self.rgb_order)
return surface
def _render_offscreen(self, drawable, data, dst_x, dst_y, width, height):
# NOTE [A]
daht, dawd, depth = data.shape
self.logger.debug("data shape is %dx%dx%d" % (dawd, daht, depth))
# fill pixmap with background color
imgwin_wd, imgwin_ht = self.get_window_size()
# fillRect(Rect(0, 0, imgwin_wd, imgwin_ht), bgclr)
# draw image data from buffer to offscreen pixmap at
# (dst_x, dst_y) with size (width x height)
## painter.drawImage(Rect(dst_x, dst_y, width, height),
## data,
## Rect(0, 0, width, height))
def render_image(self, rgbobj, dst_x, dst_y):
"""Render the image represented by (rgbobj) at dst_x, dst_y
in the offscreen pixmap.
"""
self.logger.debug("redraw pixmap=%s" % (self.pixmap))
if self.pixmap is None:
return
self.logger.debug("drawing to pixmap")
# Prepare array for rendering
arr = rgbobj.get_array(self.rgb_order, dtype=np.uint8)
(height, width) = arr.shape[:2]
return self._render_offscreen(self.pixmap, arr, dst_x, dst_y, width,
height)
def configure_window(self, width, height):
"""
This method is called by the event handler when the
size of the window changes (or it can be called manually).
We allocate an off-screen pixmap of the appropriate size
and inform the superclass of our window size.
"""
self.configure_surface(width, height)
def configure_surface(self, width, height):
self.logger.debug("window size reconfigured to %dx%d" %
(width, height))
# TODO: allocate pixmap of width x height
self.pixmap = None
self.configure(width, height)
def get_image_as_array(self):
return self.getwin_array(order=self.rgb_order, dtype=np.uint8)
def get_rgb_image_as_buffer(self, output=None, format='png', quality=90):
# copy pixmap to buffer
data_np = self.getwin_array(order=self.rgb_order, dtype=np.uint8)
header = {}
fmt_buf = self.rgb_fh.get_buffer(data_np,
header,
format,
output=output)
return fmt_buf
def get_rgb_image_as_widget(self, output=None, format='png', quality=90):
imgwin_wd, imgwin_ht = self.get_window_size()
# copy pixmap to native widget type
# ...
# image_w = self.pixmap.copy(0, 0, imgwin_wd, imgwin_ht)
image_w = None
return image_w
def save_rgb_image_as_file(self, filepath, format='png', quality=90):
img_w = self.get_rgb_image_as_widget()
# assumes that the image widget has some method for saving to
# a file
img_w.save(filepath, format=format, quality=quality)
def get_plain_image_as_widget(self):
"""Used for generating thumbnails. Does not include overlaid
graphics.
"""
arr = self.getwin_array(order=self.rgb_order)
# convert numpy array to native image widget
image_w = self._get_wimage(arr)
return image_w
def save_plain_image_as_file(self, filepath, format='png', quality=90):
"""Used for generating thumbnails. Does not include overlaid
graphics.
"""
img_w = self.get_plain_image_as_widget()
# assumes that the image widget has some method for saving to
# a file
img_w.save(filepath, format=format, quality=quality)
def reschedule_redraw(self, time_sec):
# stop any pending redraws, if possible
# ...
# schedule a call to delayed_redraw() in time_sec seconds
# DO NOT BLOCK!
# ...
pass
def update_image(self):
if (not self.pixmap) or (not self.imgwin):
return
self.logger.debug("updating window from pixmap")
# invalidate the display and force a refresh from
# offscreen pixmap
def set_cursor(self, cursor):
if self.imgwin:
# set the cursor on self.imgwin
pass
def make_cursor(self, iconpath, x, y):
# return a cursor in the widget set's instance type
# iconpath usually refers to a PNG file and x/y is the
# cursor hot spot
cursorw = None
return cursorw
def _get_wimage(self, arr_np):
"""Convert the numpy array (which is in our expected order)
to a native image object in this widget set.
"""
#return result
raise NotImplementedError
def _get_color(self, r, g, b):
"""Convert red, green and blue values specified in floats with
range 0-1 to whatever the native widget color object is.
"""
clr = (r, g, b)
return clr
def onscreen_message(self, text, delay=None, redraw=True):
# stop any scheduled updates of the message
# set new message text
self.set_onscreen_message(text, redraw=redraw)
if delay:
# schedule a call to onscreen_message_off after
# `delay` sec
pass
def take_focus(self):
# have the widget grab the keyboard focus
pass
class ImageViewMock(ImageView.ImageViewBase):
def __init__(self, logger=None, rgbmap=None, settings=None, render=None):
ImageView.ImageViewBase.__init__(self, logger=logger,
rgbmap=rgbmap, settings=settings)
# Set this to the order in which you want channels stacked
# in the numpy array delivered for writing to the off-screen
# pixmap for your widget set
self._rgb_order = 'BGRA'
self.renderer = CanvasRenderer(self)
self.t_.setDefaults(show_pan_position=False,
onscreen_ff='Sans Serif')
self.message = None
# This holds the off-screen pixel map. It's creation is usually
# deferred until we know the final size of the window.
self.pixmap = None
# This holds the native image RGB or canvas widget. You should
# create it here
self.imgwin = None
# cursors
self.cursor = {}
# override default
#self.defer_redraw = False
self.rgb_fh = RGBFileHandler(self.logger)
def get_widget(self):
"""
Call this method to extract the widget to pack into your GUI
when you are building the viewer into things.
"""
return self.imgwin
def get_surface(self):
# for compatibility with agg and opencv backends
surface = self.getwin_array(order=self._rgb_order)
return surface
def get_rgb_order(self):
return self._rgb_order
def _render_offscreen(self, drawable, data, dst_x, dst_y,
width, height):
# NOTE [A]
daht, dawd, depth = data.shape
self.logger.debug("data shape is %dx%dx%d" % (dawd, daht, depth))
# fill pixmap with background color
imgwin_wd, imgwin_ht = self.get_window_size()
# fillRect(Rect(0, 0, imgwin_wd, imgwin_ht), bgclr)
# draw image data from buffer to offscreen pixmap at
# (dst_x, dst_y) with size (width x height)
## painter.drawImage(Rect(dst_x, dst_y, width, height),
## data,
## Rect(0, 0, width, height))
# Draw a cross in the center of the window in debug mode
if self.t_['show_pan_position']:
ctr_x, ctr_y = self.get_center()
#painter.drawLine(ctr_x - 10, ctr_y, ctr_x + 10, ctr_y)
#painter.drawLine(ctr_x, ctr_y - 10, ctr_x, ctr_y + 10)
# render self.message
if self.message:
y = ((imgwin_ht // 3) * 2) - (ht // 2)
x = (imgwin_wd // 2) - (wd // 2)
#painter.drawText(x, y, message)
def render_image(self, rgbobj, dst_x, dst_y):
"""Render the image represented by (rgbobj) at dst_x, dst_y
in the offscreen pixmap.
"""
self.logger.debug("redraw pixmap=%s" % (self.pixmap))
if self.pixmap is None:
return
self.logger.debug("drawing to pixmap")
# Prepare array for rendering
arr = rgbobj.get_array(self._rgb_order)
(height, width) = arr.shape[:2]
return self._render_offscreen(self.pixmap, arr, dst_x, dst_y,
width, height)
def configure_window(self, width, height):
"""
This method is called by the event handler when the
size of the window changes (or it can be called manually).
We allocate an off-screen pixmap of the appropriate size
and inform the superclass of our window size.
"""
self.configure_surface(width, height)
def configure_surface(self, width, height):
self.logger.debug("window size reconfigured to %dx%d" % (
width, height))
# TODO: allocate pixmap of width x height
self.pixmap = None
self.configure(width, height)
def get_rgb_image_as_buffer(self, output=None, format='png',
quality=90):
# copy pixmap to buffer
data_np = self.getwin_array(order=self.get_rgb_order())
header = {}
fmt_buf = self.rgb_fh.get_buffer(data_np, header, format,
output=output)
return fmt_buf
def get_image_as_buffer(self, output=None):
return self.get_rgb_image_as_buffer(self, output=output)
def get_image_as_array(self):
return self.getwin_array(order=self.get_rgb_order())
def get_rgb_image_as_bytes(self, format='png', quality=90):
buf = self.get_rgb_image_as_buffer(format=format, quality=quality)
return buf
def get_rgb_image_as_widget(self, output=None, format='png',
quality=90):
imgwin_wd, imgwin_ht = self.get_window_size()
# copy pixmap to native widget type
# ...
# image_w = self.pixmap.copy(0, 0, imgwin_wd, imgwin_ht)
image_w = None
return image_w
def save_rgb_image_as_file(self, filepath, format='png', quality=90):
img_w = self.get_rgb_image_as_widget()
# assumes that the image widget has some method for saving to
# a file
res = img_w.save(filepath, format=format, quality=quality)
def get_image_as_widget(self):
"""Used for generating thumbnails. Does not include overlaid
graphics.
"""
arr = self.getwin_array(order=self._rgb_order)
# convert numpy array to native image widget
image_w = self._get_wimage(arr)
return image_w
def save_image_as_file(self, filepath, format='png', quality=90):
"""Used for generating thumbnails. Does not include overlaid
graphics.
"""
img_w = self.get_image_as_widget()
# assumes that the image widget has some method for saving to
# a file
res = qimg.save(filepath, format=format, quality=quality)
def reschedule_redraw(self, time_sec):
# stop any pending redraws, if possible
# ...
# schedule a call to delayed_redraw() in time_sec seconds
# DO NOT BLOCK!
# ...
pass
def update_image(self):
if (not self.pixmap) or (not self.imgwin):
return
self.logger.debug("updating window from pixmap")
# invalidate the display and force a refresh from
# offscreen pixmap
def set_cursor(self, cursor):
if self.imgwin:
# set the cursor on self.imgwin
pass
def define_cursor(self, ctype, cursor):
self.cursor[ctype] = cursor
def get_cursor(self, ctype):
return self.cursor[ctype]
def switch_cursor(self, ctype):
self.set_cursor(self.cursor[ctype])
def _get_wimage(self, arr_np):
"""Convert the numpy array (which is in our expected order)
to a native image object in this widget set.
"""
return result
def _get_color(self, r, g, b):
"""Convert red, green and blue values specified in floats with
range 0-1 to whatever the native widget color object is.
"""
clr = (r, g, b)
return clr
def onscreen_message(self, text, delay=None):
# stop any scheduled updates of the message
# set new message text
self.message = text
self.redraw(whence=3)
if delay:
# schedule a call to onscreen_message_off after
# `delay` sec
pass
def onscreen_message_off(self):
return self.onscreen_message(None)
def show_pan_mark(self, tf):
self.t_.set(show_pan_position=tf)
self.redraw(whence=3)
