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feat: Add error handling for camera initialization. #2

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feat: Add error handling for camera initialization. #2

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09b4141
feat: Add error handling for camera initialization.
drLite35 Jul 19, 2024
481ec08
Merge branch '44yu5h:master' into alpha
drLite35 Jul 19, 2024
c263931
Merge branch '44yu5h:master' into alpha
drLite35 Aug 10, 2024
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37 changes: 30 additions & 7 deletions activity.py
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Original file line number Diff line number Diff line change
Expand Up @@ -132,18 +132,23 @@ def timer_cb(self, b: Gtk.ToggleButton):
#SECTION Camera operations
#==========================================================================
def start_camera_preview(self):
try:
#* Initialize Camera
self.picam2 = Picamera2()
if not hasattr(self, 'preview_config'):
self.preview_config = self.picam2.create_preview_configuration({
self.picam2 = Picamera2()
if not hasattr(self, 'preview_config'):
self.preview_config = self.picam2.create_preview_configuration({
'size': self._size,
'format': self._format},
transform=Transform(hflip=self._hflip, vflip=self._vflip))
self.picam2.configure(self.preview_config)
self.picam2.start()
self.picam2.configure(self.preview_config)
self.picam2.start()

# Update the preview continuously: 30ms
GLib.timeout_add(30, self.update_preview)
GLib.timeout_add(30, self.update_preview)

except Exception as e:
self.show_error_message("Failed to initialize the camera. Please check your connection.")
print(f"Error starting camera preview: {e}")

def update_config(self):
config = self.picam2.create_preview_configuration({
Expand All @@ -156,8 +161,26 @@ def update_config(self):
print('changed preview config')

def update_preview(self):
self.drawing_area.queue_draw()
if hasattr(self, 'picam2'):
try:
self.drawing_area.queue_draw()
except Exception as e:
self.show_error_message("Error updating preview.")
print(f"Error updating preview: {e}")
return True

def show_error_message(self, message):
# Create an error dialog
dialog = Gtk.MessageDialog(
parent=self,
flags=Gtk.DialogFlags.MODAL,
type=Gtk.MessageType.ERROR,
buttons=Gtk.ButtonsType.OK,
message_format=message
)
dialog.run()
dialog.destroy()
Comment on lines +172 to +182
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You should use the sugar3.graphics.alert instead.

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Ok thanks!



def calculate_stride_and_scale(self, width, height, widget):
stride = cairo.ImageSurface.format_stride_for_width(cairo.FORMAT_RGB24,
Expand Down