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Do not show stock browser if no faces directory. Show error message if camera fails to init.

This commit is contained in:
Sean Davis 2013-07-16 05:24:21 -04:00
parent a418fb39b2
commit 125962a7da
2 changed files with 48 additions and 9 deletions
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53
mugshot/CameraMugshotDialog.py
View File

@ -39,19 +39,24 @@ class CameraMugshotDialog(CameraDialog):
# Pack the video widget into the dialog.
vbox = builder.get_object('camera_box')
self.video_window = Gtk.DrawingArea()
self.draw_handler = self.video_window.connect('draw', self.on_draw)
self.video_window.connect("realize",self.__on_video_window_realized)
vbox.pack_start(self.video_window, True, True, 0)
self.video_window.show()
# Prepare the camerabin element.
self.camerabin = Gst.ElementFactory.make("camerabin", "camera-source")
bus = self.camerabin.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
bus.connect("message", self._on_message)
bus.connect("sync-message::element", self._on_sync_message)
self.realized = False
if self.camerabin:
bus = self.camerabin.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
bus.connect("message", self._on_message)
bus.connect("sync-message::element", self._on_sync_message)
self.realized = False
self.draw_handler = self.video_window.connect('draw', self.on_draw)
# If the camera fails to load, show an error on the screen.
else:
self.draw_handler = self.video_window.connect('draw', self.on_failed_draw)
self.realized = True
# Essential widgets
self.record_button = builder.get_object('camera_record')
@ -62,6 +67,34 @@ class CameraMugshotDialog(CameraDialog):
self.show_all()
def on_failed_draw(self, widget, ctx):
"""Display a message that the camera failed to load."""
# Get the height and width of the drawing area.
alloc = widget.get_allocation()
height = alloc.height
width = alloc.width
# Make the background black.
ctx.set_source_rgb(0,0,0)
ctx.paint()
# Set the font details.
font_size = 20
font_color = (255,255,255)
font_name = "Sans"
# Draw the message to the drawing area.
ctx.set_source_rgb(*font_color)
ctx.select_font_face(font_name, cairo.FONT_SLANT_NORMAL,
cairo.FONT_WEIGHT_NORMAL)
ctx.set_font_size(font_size)
ctx.move_to(10,(height-font_size)/2)
# Translators: This string is split for use with cairo. The complete string is "Sorry, but your camera failed to initialize."
ctx.show_text(_("Sorry, but your camera"))
ctx.move_to(10,(height-font_size)/2+font_size)
# Translators: This string is split for use with cairo. The complete string is "Sorry, but your camera failed to initialize."
ctx.show_text(_("failed to initialize."))
def on_draw(self, widget, ctx):
"""Display a message that the camera is initializing on first draw.
Afterwards, blank the drawing area to clear the message."""
@ -103,13 +136,15 @@ class CameraMugshotDialog(CameraDialog):
if not self.realized:
print _("Cannot display web cam output. Ignoring play command")
else:
self.camerabin.set_state(Gst.State.PLAYING)
if self.camerabin:
self.camerabin.set_state(Gst.State.PLAYING)
def pause(self):
"""Pause the camera output. It will cause the image to "freeze".
Use play() to start the camera playing again. Note that calling pause
before play may cause errors on certain camera."""
self.camerabin.set_state(Gst.State.PAUSED)
if self.camerabin:
self.camerabin.set_state(Gst.State.PAUSED)
def take_picture(self, filename):
"""take_picture - grab a frame from the webcam and save it to

4
mugshot/MugshotWindow.py
View File

@ -40,6 +40,7 @@ home = os.path.expanduser('~')
libreoffice_prefs = os.path.join(home, '.config', 'libreoffice', '4', 'user',
'registrymodifications.xcu')
pidgin_prefs = os.path.join(home, '.purple', 'prefs.xml')
faces_dir = '/usr/share/pixmaps/faces/'
def which(command):
'''Use the system command which to get the absolute path for the given
@ -109,6 +110,9 @@ class MugshotWindow(Window):
self.image_menu = builder.get_object('image_menu')
self.image_menu.attach_to_widget(self.image_button, detach_cb)
self.image_from_camera = builder.get_object('image_from_camera')
image_from_browse = builder.get_object('image_from_browse')
image_from_browse.set_visible( os.path.exists(faces_dir) and \
len(os.listdir(faces_dir)) > 0 )
# Entry widgets (chfn)
self.first_name_entry = builder.get_object('first_name')