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from typing import List
import json5
import pptx
import re
import yaml
from pptx.dml.color import RGBColor
PATTERN = re.compile(r"^slide[ ]+\d+:", re.IGNORECASE)
def remove_slide_number_from_heading(header: str) -> str:
"""
Remove the slide number from a given slide header.
:param header: The header of a slide
"""
if PATTERN.match(header):
idx = header.find(':')
header = header[idx + 1:]
return header
def generate_powerpoint_presentation(structured_data: str, as_yaml: bool, output_file_name: str) -> List:
"""
Create and save a PowerPoint presentation file containing the contents in JSON or YAML format.
:param structured_data: The presentation contents as "JSON" (may contain trailing commas) or YAML
:param as_yaml: True if the input data is in YAML format; False if it is in JSON format
:param output_file_name: The name of the PPTX file to save as
:return A list of presentation title and slides headers
"""
if as_yaml:
# Avoid YAML mode: nested bullets can lead to incorrect YAML generation
try:
parsed_data = yaml.safe_load(structured_data)
except yaml.parser.ParserError as ype:
print(f'*** YAML parse error: {ype}')
parsed_data = {'title': '', 'slides': []}
else:
# The structured "JSON" might contain trailing commas, so using json5
parsed_data = json5.loads(structured_data)
presentation = pptx.Presentation()
# The title slide
title_slide_layout = presentation.slide_layouts[0]
slide = presentation.slides.add_slide(title_slide_layout)
title = slide.shapes.title
subtitle = slide.placeholders[1]
title.text = parsed_data['title']
print(f'Title is: {title.text}')
subtitle.text = 'by Myself and SlideDeck AI :)'
all_headers = [title.text, ]
background = slide.background
background.fill.solid()
background.fill.fore_color.rgb = RGBColor.from_string('C0C0C0') # Silver
title.text_frame.paragraphs[0].font.color.rgb = RGBColor(0, 0, 128) # Navy blue
# Add contents in a loop
for a_slide in parsed_data['slides']:
bullet_slide_layout = presentation.slide_layouts[1]
slide = presentation.slides.add_slide(bullet_slide_layout)
shapes = slide.shapes
title_shape = shapes.title
body_shape = shapes.placeholders[1]
title_shape.text = remove_slide_number_from_heading(a_slide['heading'])
all_headers.append(title_shape.text)
text_frame = body_shape.text_frame
for an_item in a_slide['bullet_points']:
item_type = type(an_item)
# print('Bullet point type:', item_type)
if item_type is str:
paragraph = text_frame.add_paragraph()
paragraph.text = an_item
paragraph.level = 0
elif item_type is list:
for sub_item in an_item:
if type(sub_item) is str:
paragraph = text_frame.add_paragraph()
paragraph.text = sub_item
paragraph.level = 1
background = slide.background
background.fill.gradient()
background.fill.gradient_angle = -225.0
# The thank-you slide
last_slide_layout = presentation.slide_layouts[0]
slide = presentation.slides.add_slide(last_slide_layout)
title = slide.shapes.title
title.text = 'Thank you!'
presentation.save(output_file_name)
return all_headers
if __name__ == '__main__':
generate_powerpoint_presentation(
json5.loads(open('examples/example_02_structured_output.json', 'r').read()),
as_yaml=False,
output_file_name='test.pptx'
)
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