652 lines
27 KiB
Python
652 lines
27 KiB
Python
import logging
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import base64
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import io
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from typing import Dict, Any, Optional, Tuple, List
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from .rendererBaseTemplate import BaseRenderer
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logger = logging.getLogger(__name__)
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class RendererPptx(BaseRenderer):
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"""Renderer for PowerPoint (.pptx) files using python-pptx library."""
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def __init__(self):
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super().__init__()
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self.supported_formats = ["pptx", "ppt"]
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self.output_mime_type = "application/vnd.openxmlformats-officedocument.presentationml.presentation"
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@classmethod
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def get_supported_formats(cls) -> list:
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"""Get list of supported output formats."""
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return ["pptx", "ppt"]
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async def render(self, extracted_content: Dict[str, Any], title: str, user_prompt: str = None, ai_service=None) -> Tuple[str, str]:
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"""
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Render content as PowerPoint presentation from JSON data.
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Args:
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extracted_content: JSON content to render as presentation
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title: Title for the presentation
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user_prompt: User prompt for AI styling
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ai_service: AI service for styling
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**kwargs: Additional rendering options
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Returns:
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Base64-encoded PowerPoint presentation as string
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"""
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try:
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# Import python-pptx
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from pptx import Presentation
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from pptx.util import Inches, Pt
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from pptx.enum.text import PP_ALIGN
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from pptx.dml.color import RGBColor
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import re
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# Create new presentation
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prs = Presentation()
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# Set slide size based on user intent (default to 16:9)
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slide_size = styles.get("slide_size", "16:9")
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if slide_size == "4:3":
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prs.slide_width = Inches(10)
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prs.slide_height = Inches(7.5)
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else: # Default to 16:9
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prs.slide_width = Inches(13.33)
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prs.slide_height = Inches(7.5)
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# Get AI-generated styling definitions
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styles = await self._get_pptx_styles(user_prompt, ai_service)
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# Generate slides from JSON content
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slides_data = await self._parse_json_to_slides(extracted_content, title, styles)
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logger.info(f"Parsed {len(slides_data)} slides from JSON content")
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# Debug: Show first 200 chars of content
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logger.info(f"JSON content preview: {str(extracted_content)[:200]}...")
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for i, slide_data in enumerate(slides_data):
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logger.info(f"Slide {i+1}: '{slide_data.get('title', 'No title')}' - {len(slide_data.get('content', ''))} chars")
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# Debug: Show slide content preview
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slide_content = slide_data.get('content', '')
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if slide_content:
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logger.info(f" Content preview: '{slide_content[:100]}...'")
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else:
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logger.warning(f" ⚠️ Slide {i+1} has NO content!")
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# Create slide with appropriate layout based on content
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slide_layout_index = self._get_slide_layout_index(slide_data, styles)
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slide_layout = prs.slide_layouts[slide_layout_index]
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slide = prs.slides.add_slide(slide_layout)
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# Set title
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title_shape = slide.shapes.title
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title_shape.text = slide_data.get("title", "Slide")
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# Set content
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content_shape = slide.placeholders[1]
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content_text = slide_data.get("content", "")
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# Format content text
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text_frame = content_shape.text_frame
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text_frame.clear()
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# Split content into paragraphs
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paragraphs = content_text.split('\n\n')
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for i, paragraph in enumerate(paragraphs):
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if paragraph.strip():
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if i == 0:
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p = text_frame.paragraphs[0]
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else:
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p = text_frame.add_paragraph()
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p.text = paragraph.strip()
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# Format based on content type
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if paragraph.startswith('#'):
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# Header
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p.text = paragraph.lstrip('#').strip()
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p.font.size = Pt(24)
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p.font.bold = True
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elif paragraph.startswith('##'):
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# Subheader
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p.text = paragraph.lstrip('#').strip()
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p.font.size = Pt(20)
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p.font.bold = True
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elif paragraph.startswith('*') and paragraph.endswith('*'):
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# Bold text
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p.text = paragraph.strip('*')
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p.font.bold = True
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else:
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# Regular text
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p.font.size = Pt(14)
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p.alignment = PP_ALIGN.LEFT
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# If no slides were created, create a default slide
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if not slides_data:
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slide_layout = prs.slide_layouts[0] # Title slide layout
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slide = prs.slides.add_slide(slide_layout)
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title_shape = slide.shapes.title
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title_shape.text = title
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subtitle_shape = slide.placeholders[1]
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subtitle_shape.text = "Generated by PowerOn AI System"
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# Save to buffer
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buffer = io.BytesIO()
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prs.save(buffer)
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buffer.seek(0)
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# Convert to base64
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pptx_bytes = buffer.getvalue()
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pptx_base64 = base64.b64encode(pptx_bytes).decode('utf-8')
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logger.info(f"Successfully rendered PowerPoint presentation: {len(pptx_bytes)} bytes")
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return pptx_base64, "application/vnd.openxmlformats-officedocument.presentationml.presentation"
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except ImportError:
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logger.error("python-pptx library not installed. Install with: pip install python-pptx")
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return "python-pptx library not installed", "text/plain"
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except Exception as e:
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logger.error(f"Error rendering PowerPoint presentation: {str(e)}")
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return f"Error rendering PowerPoint presentation: {str(e)}", "text/plain"
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def _parse_content_to_slides(self, content: str, title: str) -> list:
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"""
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Parse content into slide data structure.
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Args:
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content: Content to parse
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title: Presentation title
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Returns:
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List of slide data dictionaries
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"""
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slides = []
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# Split content by slide markers or headers
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slide_sections = self._split_content_into_slides(content)
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for i, section in enumerate(slide_sections):
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if section.strip():
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slide_data = {
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"title": f"Slide {i + 1}",
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"content": section.strip()
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}
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# Extract title from content if it starts with #
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lines = section.strip().split('\n')
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if lines and lines[0].startswith('#'):
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# Remove # symbols and clean up title
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slide_title = lines[0].lstrip('#').strip()
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slide_data["title"] = slide_title
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slide_data["content"] = '\n'.join(lines[1:]).strip()
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elif lines and lines[0].strip():
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# Use first line as title if it looks like a title
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first_line = lines[0].strip()
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if len(first_line) < 100 and not first_line.endswith('.'):
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slide_data["title"] = first_line
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slide_data["content"] = '\n'.join(lines[1:]).strip()
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slides.append(slide_data)
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return slides
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def _split_content_into_slides(self, content: str) -> list:
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"""
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Split content into individual slides based on headers and structure.
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Args:
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content: Content to split
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Returns:
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List of slide content strings
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"""
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import re
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# First, try to split by major headers (# or ##)
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# This is the most common case for AI-generated content
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header_pattern = r'^(#{1,2})\s+(.+)$'
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lines = content.split('\n')
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slides = []
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current_slide = []
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for line in lines:
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# Check if this line is a header
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header_match = re.match(header_pattern, line.strip())
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if header_match:
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# If we have content in current slide, save it
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if current_slide:
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slide_content = '\n'.join(current_slide).strip()
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if slide_content:
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slides.append(slide_content)
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current_slide = []
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# Start new slide with this header
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current_slide.append(line)
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else:
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# Add line to current slide
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current_slide.append(line)
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# Add the last slide
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if current_slide:
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slide_content = '\n'.join(current_slide).strip()
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if slide_content:
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slides.append(slide_content)
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# If we found slides with headers, return them
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if len(slides) > 1:
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return slides
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# Fallback: Split by double newlines
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sections = content.split('\n\n\n')
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if len(sections) > 1:
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return [s.strip() for s in sections if s.strip()]
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# Another fallback: Split by double newlines
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sections = content.split('\n\n')
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if len(sections) > 1:
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return [s.strip() for s in sections if s.strip()]
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# Last resort: return as single slide
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return [content.strip()]
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def get_output_mime_type(self) -> str:
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"""Get MIME type for rendered output."""
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return self.output_mime_type
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async def _get_pptx_styles(self, user_prompt: str, ai_service=None) -> Dict[str, Any]:
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"""Get PowerPoint styling definitions using base template AI styling."""
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style_schema = {
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"title": {"font_size": 44, "color": "#1F4E79", "bold": True, "align": "center"},
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"heading": {"font_size": 32, "color": "#2F2F2F", "bold": True, "align": "left"},
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"subheading": {"font_size": 24, "color": "#4F4F4F", "bold": True, "align": "left"},
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"paragraph": {"font_size": 18, "color": "#2F2F2F", "bold": False, "align": "left"},
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"bullet_list": {"font_size": 18, "color": "#2F2F2F", "indent": 20},
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"table_header": {"font_size": 16, "color": "#FFFFFF", "bold": True, "background": "#4F4F4F"},
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"table_cell": {"font_size": 14, "color": "#2F2F2F", "bold": False, "background": "#FFFFFF"},
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"slide_size": "16:9",
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"content_per_slide": "concise"
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}
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style_template = self._create_ai_style_template("pptx", user_prompt, style_schema)
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styles = await self._get_ai_styles(ai_service, style_template, self._get_default_pptx_styles())
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# Validate PowerPoint-specific requirements
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return self._validate_pptx_styles_readability(styles)
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def _validate_pptx_styles_readability(self, styles: Dict[str, Any]) -> Dict[str, Any]:
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"""Validate and fix readability issues in AI-generated styles."""
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try:
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# Ensure minimum font sizes for PowerPoint readability
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min_font_sizes = {
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"title": 36,
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"heading": 24,
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"subheading": 20,
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"paragraph": 14,
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"bullet_list": 14,
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"table_header": 12,
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"table_cell": 12
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}
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for style_name, min_size in min_font_sizes.items():
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if style_name in styles:
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current_size = styles[style_name].get("font_size", 12)
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if current_size < min_size:
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styles[style_name]["font_size"] = min_size
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return styles
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except Exception as e:
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logger.warning(f"Style validation failed: {str(e)}")
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return self._get_default_pptx_styles()
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def _get_default_pptx_styles(self) -> Dict[str, Any]:
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"""Default PowerPoint styles."""
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return {
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"title": {"font_size": 44, "color": "#1F4E79", "bold": True, "align": "center"},
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"heading": {"font_size": 32, "color": "#2F2F2F", "bold": True, "align": "left"},
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"subheading": {"font_size": 24, "color": "#4F4F4F", "bold": True, "align": "left"},
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"paragraph": {"font_size": 18, "color": "#2F2F2F", "bold": False, "align": "left"},
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"bullet_list": {"font_size": 18, "color": "#2F2F2F", "indent": 20},
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"table_header": {"font_size": 16, "color": "#FFFFFF", "bold": True, "background": "#4F4F4F"},
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"table_cell": {"font_size": 14, "color": "#2F2F2F", "bold": False, "background": "#FFFFFF"},
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"slide_size": "16:9",
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"content_per_slide": "concise"
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}
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async def _parse_json_to_slides(self, json_content: Dict[str, Any], title: str, styles: Dict[str, Any]) -> List[Dict[str, Any]]:
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"""
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Parse JSON content into slide data structure.
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Args:
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json_content: JSON content to parse
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title: Presentation title
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styles: AI-generated styles
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Returns:
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List of slide data dictionaries
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"""
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slides = []
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try:
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# Validate JSON structure
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if not isinstance(json_content, dict):
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raise ValueError("JSON content must be a dictionary")
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if "sections" not in json_content:
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raise ValueError("JSON content must contain 'sections' field")
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# Use title from JSON metadata if available, otherwise use provided title
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document_title = json_content.get("metadata", {}).get("title", title)
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# Create title slide
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slides.append({
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"title": document_title,
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"content": "Generated by PowerOn AI System\n\n" + self._format_timestamp()
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})
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# Process sections into slides based on content and user intent
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sections = json_content.get("sections", [])
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slides.extend(self._create_slides_from_sections(sections, styles))
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# If no content slides were created, create a default content slide
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if len(slides) == 1: # Only title slide
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slides.append({
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"title": "Content Overview",
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"content": "No structured content found in the source documents.\n\nPlease check the source documents and try again."
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})
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return slides
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except Exception as e:
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logger.error(f"Error parsing JSON to slides: {str(e)}")
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# Return minimal fallback slides
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return [
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{
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"title": title,
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"content": "Error parsing content for presentation"
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}
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]
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def _create_slide_from_section(self, section: Dict[str, Any], styles: Dict[str, Any]) -> Dict[str, Any]:
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"""Create a slide from a JSON section."""
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try:
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section_title = section.get("title", "Untitled Section")
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content_type = section.get("content_type", "paragraph")
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elements = section.get("elements", [])
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# Build slide content based on section type
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content_parts = []
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for element in elements:
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if content_type == "table":
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content_parts.append(self._format_table_for_slide(element))
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elif content_type == "list":
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content_parts.append(self._format_list_for_slide(element))
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elif content_type == "heading":
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content_parts.append(self._format_heading_for_slide(element))
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elif content_type == "paragraph":
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content_parts.append(self._format_paragraph_for_slide(element))
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elif content_type == "code":
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content_parts.append(self._format_code_for_slide(element))
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else:
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content_parts.append(self._format_paragraph_for_slide(element))
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# Combine content parts
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slide_content = "\n\n".join(filter(None, content_parts))
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return {
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"title": section_title,
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"content": slide_content
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}
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except Exception as e:
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logger.warning(f"Error creating slide from section: {str(e)}")
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return None
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def _format_table_for_slide(self, table_data: Dict[str, Any]) -> str:
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"""Format table data for slide presentation."""
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try:
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headers = table_data.get("headers", [])
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rows = table_data.get("rows", [])
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if not headers:
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return ""
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# Create table representation
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table_lines = []
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# Add headers
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header_line = " | ".join(str(h) for h in headers)
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table_lines.append(header_line)
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# Add separator
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separator = "-" * len(header_line)
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table_lines.append(separator)
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# Add data rows (limit based on content density)
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max_rows = 5 # Default limit
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for row in rows[:max_rows]:
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row_line = " | ".join(str(cell) for cell in row)
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table_lines.append(row_line)
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if len(rows) > max_rows:
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table_lines.append(f"... and {len(rows) - max_rows} more rows")
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return "\n".join(table_lines)
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except Exception as e:
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logger.warning(f"Error formatting table for slide: {str(e)}")
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return ""
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def _format_list_for_slide(self, list_data: Dict[str, Any]) -> str:
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"""Format list data for slide presentation."""
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try:
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items = list_data.get("items", [])
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if not items:
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return ""
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# Create list representation
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list_lines = []
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for item in items:
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if isinstance(item, dict):
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text = item.get("text", "")
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list_lines.append(f"• {text}")
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# Add subitems (limit to 3 for readability)
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subitems = item.get("subitems", [])[:3]
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for subitem in subitems:
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if isinstance(subitem, dict):
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list_lines.append(f" - {subitem.get('text', '')}")
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else:
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list_lines.append(f" - {subitem}")
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else:
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list_lines.append(f"• {str(item)}")
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return "\n".join(list_lines)
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except Exception as e:
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logger.warning(f"Error formatting list for slide: {str(e)}")
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return ""
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def _format_heading_for_slide(self, heading_data: Dict[str, Any]) -> str:
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"""Format heading data for slide presentation."""
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try:
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text = heading_data.get("text", "")
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level = heading_data.get("level", 1)
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if text:
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return f"{'#' * level} {text}"
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return ""
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except Exception as e:
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logger.warning(f"Error formatting heading for slide: {str(e)}")
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return ""
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def _format_paragraph_for_slide(self, paragraph_data: Dict[str, Any]) -> str:
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"""Format paragraph data for slide presentation."""
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try:
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text = paragraph_data.get("text", "")
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if text:
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# Limit paragraph length based on content density
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max_length = 200 # Default limit
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if len(text) > max_length:
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text = text[:max_length] + "..."
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return text
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return ""
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except Exception as e:
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logger.warning(f"Error formatting paragraph for slide: {str(e)}")
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return ""
|
|
|
|
def _format_code_for_slide(self, code_data: Dict[str, Any]) -> str:
|
|
"""Format code data for slide presentation."""
|
|
try:
|
|
code = code_data.get("code", "")
|
|
language = code_data.get("language", "")
|
|
|
|
if code:
|
|
# Limit code length based on content density
|
|
max_length = 100 # Default limit
|
|
if len(code) > max_length:
|
|
code = code[:max_length] + "..."
|
|
|
|
if language:
|
|
return f"Code ({language}):\n{code}"
|
|
else:
|
|
return f"Code:\n{code}"
|
|
|
|
return ""
|
|
|
|
except Exception as e:
|
|
logger.warning(f"Error formatting code for slide: {str(e)}")
|
|
return ""
|
|
|
|
def _get_slide_layout_index(self, slide_data: Dict[str, Any], styles: Dict[str, Any]) -> int:
|
|
"""Determine the best slide layout based on content."""
|
|
try:
|
|
content = slide_data.get("content", "")
|
|
title = slide_data.get("title", "")
|
|
|
|
# Check if it's a title slide (first slide)
|
|
if not content or "Generated by PowerOn AI System" in content:
|
|
return 0 # Title slide layout
|
|
|
|
# Check content type to determine layout
|
|
if "|" in content and "-" in content:
|
|
# Has both tables and lists - use content with caption
|
|
return 2
|
|
elif "|" in content:
|
|
# Has tables - use content layout
|
|
return 1
|
|
elif content.count("•") > 2:
|
|
# Has many bullet points - use content layout
|
|
return 1
|
|
else:
|
|
# Default to title and content
|
|
return 1
|
|
|
|
except Exception as e:
|
|
logger.warning(f"Error determining slide layout: {str(e)}")
|
|
return 1 # Default to title and content
|
|
|
|
def _create_slides_from_sections(self, sections: List[Dict[str, Any]], styles: Dict[str, Any]) -> List[Dict[str, Any]]:
|
|
"""Create slides from sections based on content density and user intent."""
|
|
try:
|
|
slides = []
|
|
content_per_slide = styles.get("content_per_slide", "concise")
|
|
|
|
for section in sections:
|
|
section_slides = self._create_section_slides(section, styles, content_per_slide)
|
|
slides.extend(section_slides)
|
|
|
|
return slides
|
|
|
|
except Exception as e:
|
|
logger.warning(f"Error creating slides from sections: {str(e)}")
|
|
return []
|
|
|
|
def _create_section_slides(self, section: Dict[str, Any], styles: Dict[str, Any], content_per_slide: str) -> List[Dict[str, Any]]:
|
|
"""Create one or more slides from a section based on content density."""
|
|
try:
|
|
section_title = section.get("title", "Untitled Section")
|
|
content_type = section.get("content_type", "paragraph")
|
|
elements = section.get("elements", [])
|
|
|
|
if not elements:
|
|
return [{
|
|
"title": section_title,
|
|
"content": "No content available for this section."
|
|
}]
|
|
|
|
# Determine how to split content based on type and density
|
|
if content_per_slide == "detailed" and len(elements) > 3:
|
|
# Split large sections into multiple slides
|
|
return self._split_section_into_multiple_slides(section_title, elements, content_type)
|
|
else:
|
|
# Create single slide for section
|
|
slide_data = self._create_slide_from_section(section, styles)
|
|
return [slide_data] if slide_data else []
|
|
|
|
except Exception as e:
|
|
logger.warning(f"Error creating section slides: {str(e)}")
|
|
return []
|
|
|
|
def _split_section_into_multiple_slides(self, section_title: str, elements: List[Dict[str, Any]], content_type: str) -> List[Dict[str, Any]]:
|
|
"""Split a large section into multiple slides."""
|
|
try:
|
|
slides = []
|
|
max_elements_per_slide = 3
|
|
|
|
for i in range(0, len(elements), max_elements_per_slide):
|
|
slide_elements = elements[i:i + max_elements_per_slide]
|
|
|
|
# Create slide title
|
|
if i == 0:
|
|
slide_title = section_title
|
|
else:
|
|
slide_title = f"{section_title} (Part {i//max_elements_per_slide + 1})"
|
|
|
|
# Build content for this slide
|
|
content_parts = []
|
|
for element in slide_elements:
|
|
if content_type == "table":
|
|
content_parts.append(self._format_table_for_slide(element))
|
|
elif content_type == "list":
|
|
content_parts.append(self._format_list_for_slide(element))
|
|
elif content_type == "heading":
|
|
content_parts.append(self._format_heading_for_slide(element))
|
|
elif content_type == "paragraph":
|
|
content_parts.append(self._format_paragraph_for_slide(element))
|
|
elif content_type == "code":
|
|
content_parts.append(self._format_code_for_slide(element))
|
|
else:
|
|
content_parts.append(self._format_paragraph_for_slide(element))
|
|
|
|
slide_content = "\n\n".join(filter(None, content_parts))
|
|
|
|
slides.append({
|
|
"title": slide_title,
|
|
"content": slide_content
|
|
})
|
|
|
|
return slides
|
|
|
|
except Exception as e:
|
|
logger.warning(f"Error splitting section into slides: {str(e)}")
|
|
return []
|
|
|
|
def _format_timestamp(self) -> str:
|
|
"""Format current timestamp for presentation generation."""
|
|
from datetime import datetime, UTC
|
|
return datetime.now(UTC).strftime("%Y-%m-%d %H:%M:%S UTC")
|