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Option added to show a slideshow of taken pictures when idle

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This commit is contained in:
Balthasar Reuter
2016-09-15 00:14:55 +02:00
parent a888967301
commit b8e7ac2c55
3 changed files with 93 additions and 38 deletions
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22
gui.py
View File

@@ -78,12 +78,12 @@ class GUI_PyGame:
surface = pygame.transform.flip(surface, True, False)
self.surface_list.append((surface, offset))
def show_message(self, msg, color=(245,245,245), bg=(0,0,0), transparency=True):
def show_message(self, msg, color=(0,0,0), bg=(230,230,230), transparency=True, outline=(245,245,245)):
# Choose font
font = pygame.font.Font(None, 144)
# Wrap and render text
wrapped_text, text_height = self.wrap_text(msg, font, self.size)
rendered_text = self.render_text(wrapped_text, text_height, 1, 1, font, color, bg, transparency)
rendered_text = self.render_text(wrapped_text, text_height, 1, 1, font, color, bg, transparency, outline)
self.surface_list.append((rendered_text, (0,0)))
@@ -137,7 +137,7 @@ class GUI_PyGame:
return final_lines, accumulated_height
def render_text(self, text, text_height, valign, halign, font, color, bg, transparency):
def render_text(self, text, text_height, valign, halign, font, color, bg, transparency, outline):
# Determine vertical position
if valign == 0: # top aligned
voffset = 0
@@ -155,16 +155,24 @@ class GUI_PyGame:
# Blit one line after another
accumulated_height = 0
for line in text:
tempsurface = font.render(line, 1, color)
maintext = font.render(line, 1, color)
shadow = font.render(line, 1, outline)
if halign == 0: # left aligned
hoffset = 0
elif halign == 1: # centered
hoffset = (self.size[0] - tempsurface.get_width()) / 2
hoffset = (self.size[0] - maintext.get_width()) / 2
elif halign == 2: # right aligned
hoffset = rect.width - tempsurface.get_width()
hoffset = rect.width - maintext.get_width()
else:
raise GuiException("Invalid halign argument: " + str(justification))
surface.blit(tempsurface, (hoffset, voffset + accumulated_height))
pos = (hoffset, voffset + accumulated_height)
# Outline
surface.blit(shadow, (pos[0]-1,pos[1]-1))
surface.blit(shadow, (pos[0]-1,pos[1]+1))
surface.blit(shadow, (pos[0]+1,pos[1]-1))
surface.blit(shadow, (pos[0]+1,pos[1]+1))
# Text
surface.blit(maintext, pos)
accumulated_height += font.size(line)[1]
# Make background color transparent

68
photobooth.py
View File

@@ -10,8 +10,9 @@ from time import sleep, clock
from PIL import Image
from gui import GUI_PyGame as GuiModule
#from camera import CameraException, Camera_cv as CameraModule
# from camera import CameraException, Camera_cv as CameraModule
from camera import CameraException, Camera_gPhoto as CameraModule
from slideshow import Slideshow
from events import Rpi_GPIO as GPIO
#####################
@@ -42,9 +43,15 @@ gpio_lamp_channel = 4 # pin 7 in all Raspi-Versions
# Waiting time in seconds for posing
pose_time = 5
# Display time for taken pictures
# Display time for assembled picture
display_time = 10
# Show a slideshow of existing pictures when idle
idle_slideshow = True
# Display time of pictures in the slideshow
slideshow_display_time = 5
###############
### Classes ###
###############
@@ -105,7 +112,7 @@ class Photobooth:
"""
def __init__(self, display_size, picture_basename, picture_size, pose_time, display_time,
trigger_channel, shutdown_channel, lamp_channel):
trigger_channel, shutdown_channel, lamp_channel, idle_slideshow, slideshow_display_time):
self.display = GuiModule('Photobooth', display_size)
self.pictures = PictureList(picture_basename)
self.camera = CameraModule(picture_size)
@@ -118,6 +125,12 @@ class Photobooth:
self.shutdown_channel = shutdown_channel
self.lamp_channel = lamp_channel
self.idle_slideshow = idle_slideshow
if self.idle_slideshow:
self.slideshow_display_time = slideshow_display_time
self.slideshow = Slideshow(display_size, display_time,
os.path.dirname(os.path.realpath(picture_basename)))
input_channels = [ trigger_channel, shutdown_channel ]
output_channels = [ lamp_channel ]
self.gpio = GPIO(self.handle_gpio, input_channels, output_channels)
@@ -132,21 +145,38 @@ class Photobooth:
self.gpio.teardown()
exit(0)
def _run_plain(self):
while True:
self.camera.set_idle()
# Display default message
self.display.clear()
self.display.show_message("Hit the button!")
self.display.apply()
# Wait for an event and handle it
event = self.display.wait_for_event()
self.handle_event(event)
def _run_slideshow(self):
while True:
self.camera.set_idle()
self.slideshow.display_next("Hit the button!")
tic = clock()
while clock() - tic < self.slideshow_display_time:
self.check_and_handle_events()
def run(self):
while True:
try:
# Enable lamp
self.gpio.set_output(self.lamp_channel, 1)
while True:
self.camera.set_idle()
# Display default message
self.display.clear()
self.display.show_message("Hit the button!")
self.display.apply()
# Wait for an event and handle it
event = self.display.wait_for_event()
self.handle_event(event)
# Select idle screen type
if self.idle_slideshow:
self._run_slideshow()
else:
self._run_plain()
# Catch exceptions and display message
except CameraException as e:
@@ -158,6 +188,12 @@ class Photobooth:
print('SERIOUS ERROR: ' + repr(e))
self.handle_exception("SERIOUS ERROR!")
def check_and_handle_events(self):
r, e = self.display.check_for_event()
while r:
self.handle_event(e)
r, e = self.display.check_for_event()
def handle_gpio(self, channel):
if channel in [ self.trigger_channel, self.shutdown_channel ]:
self.display.trigger_event(channel)
@@ -282,14 +318,13 @@ class Photobooth:
def show_counter(self, seconds):
if self.camera.has_preview():
tic, toc = clock(), 0
while toc < self.pose_time:
tic = clock()
while clock() - tic < seconds:
self.display.clear()
self.camera.take_preview("/tmp/photobooth_preview.jpg")
self.display.show_picture("/tmp/photobooth_preview.jpg", flip=True)
self.display.show_message(str(seconds - int(clock() - tic)))
self.display.apply()
toc = clock() - tic
else:
for i in range(seconds):
self.display.clear()
@@ -376,7 +411,8 @@ class Photobooth:
def main():
photobooth = Photobooth(display_size, picture_basename, image_size, pose_time, display_time,
gpio_trigger_channel, gpio_shutdown_channel, gpio_lamp_channel)
gpio_trigger_channel, gpio_shutdown_channel, gpio_lamp_channel,
idle_slideshow, slideshow_display_time)
photobooth.run()
photobooth.teardown()
return 0

21
slideshow.py
View File

@@ -40,6 +40,7 @@ class Slideshow:
self.filelist = []
self.display = GuiModule("Slideshow", display_size)
self.display_time = display_time
self.next = 0
def scan(self):
filelist = []
@@ -57,6 +58,7 @@ class Slideshow:
filelist.append(filename)
self.filelist = filelist
self.next = 0
def handle_event(self, event):
if event.type == 0:
@@ -69,19 +71,28 @@ class Slideshow:
if key == ord('q'):
self.teardown()
def run(self):
while True:
def display_next(self, text=""):
if self.next >= len(self.filelist):
self.scan()
if len(self.filelist) == 0:
if not self.filelist:
self.display.clear()
if text:
self.display.show_message(text)
else:
self.display.show_message("No pictures available!")
self.display.apply()
sleep(10)
else:
for filename in self.filelist:
filename = self.filelist[self.next]
self.next += 1
self.display.clear()
self.display.show_picture(filename)
if text:
self.display.show_message(text)
self.display.apply()
def run(self):
while True:
self.display_next()
sleep(self.display_time)
r, e = self.display.check_for_event()
if r: