""" Inkycal Slideshow Module Copyright by aceinnolab """ import glob from inkycal.custom import * # PIL has a class named Image, use alias for Inkyimage -> Images from inkycal.modules.inky_image import Inkyimage as Images, image_to_palette from inkycal.modules.template import inkycal_module from inkycal.utils import JSONCache logger = logging.getLogger(__name__) class Slideshow(inkycal_module): """Cycles through images in a local image folder""" name = "Slideshow - cycle through images from a local folder" requires = { "path": { "label": "Path to a local folder, e.g. /home/pi/Desktop/images. " "Only PNG and JPG/JPEG images are used for the slideshow." }, "palette": { "label": "Which palette should be used for converting images?", "options": ["bw", "bwr", "bwy"] } } optional = { "autoflip": { "label": "Should the image be flipped automatically? Default is False", "options": [False, True] }, "orientation": { "label": "Please select the desired orientation", "options": ["vertical", "horizontal"] } } def __init__(self, config): """Initialize module""" super().__init__(config) config = config['config'] # required parameters for param in self.requires: if param not in config: raise Exception(f'config is missing {param}') # optional parameters self.path = config['path'] self.palette = config['palette'] self.autoflip = config['autoflip'] self.orientation = config['orientation'] # Get the full path of all png/jpg/jpeg images in the given folder all_files = glob.glob(f'{self.path}/*') self.images = [i for i in all_files if i.split('.')[-1].lower() in ('jpg', 'jpeg', 'png')] if not self.images: logger.error('No images found in the given folder, please double check your path!') raise Exception('No images found in the given folder path :/') self.cache = JSONCache('inkycal_slideshow') self.cache_data = self.cache.read() # set a 'first run' signal self._first_run = True # give an OK message logger.debug(f'{__name__} loaded') def generate_image(self): """Generate image for this module""" # Define new image size with respect to padding im_width = int(self.width - (2 * self.padding_left)) im_height = int(self.height - (2 * self.padding_top)) im_size = im_width, im_height logger.debug(f'Image size: {im_size}') # rotates list items by 1 index def rotate(list: list): return list[1:] + list[:1] # Switch to the next image if this is not the first run if self._first_run: self._first_run = False self.cache_data["current_index"] = 0 else: self.images = rotate(self.images) self.cache_data["current_index"] = (self.cache_data["current_index"] + 1) % len(self.images) # initialize custom image class im = Images() # temporary print method, prints current filename print(f'slideshow - current image name: {self.images[0].split("/")[-1]}') # use the image at the first index im.load(self.images[0]) # Remove background if present im.remove_alpha() # if auto-flip was enabled, flip the image if self.autoflip: im.autoflip(self.orientation) # resize the image so it can fit on the epaper im.resize(width=im_width, height=im_height) # convert images according to specified palette im_black, im_colour = image_to_palette(im.image.convert("RGB"), self.palette) # with the images now send, clear the current image im.clear() self.cache.write(self.cache_data) # return images return im_black, im_colour if __name__ == '__main__': print(f'running {__name__} in standalone/debug mode')