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gsinghpal
162
fusion_claims/models/pdf_template_inherit.py
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162
fusion_claims/models/pdf_template_inherit.py
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# -*- coding: utf-8 -*-
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import base64
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import logging
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from io import BytesIO
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from odoo import models, fields, api
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_logger = logging.getLogger(__name__)
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class FusionSaSignatureTemplate(models.Model):
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_name = 'fusion.sa.signature.template'
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_description = 'SA Mobility Signature Position Template'
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_order = 'name'
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name = fields.Char(string='Template Name', required=True)
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active = fields.Boolean(default=True)
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notes = fields.Text(string='Notes')
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sa_default_sig_page = fields.Integer(string='Default Signature Page', default=2)
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# Absolute PDF point coordinates. Y = distance from top of page.
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sa_sig_name_x = fields.Integer(string='Name X', default=105)
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sa_sig_name_y = fields.Integer(string='Name Y from top', default=97)
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sa_sig_date_x = fields.Integer(string='Date X', default=430)
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sa_sig_date_y = fields.Integer(string='Date Y from top', default=97)
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sa_sig_x = fields.Integer(string='Signature X', default=72)
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sa_sig_y = fields.Integer(string='Signature Y from top', default=68)
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sa_sig_w = fields.Integer(string='Signature Width', default=190)
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sa_sig_h = fields.Integer(string='Signature Height', default=25)
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preview_pdf = fields.Binary(
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string='Sample PDF',
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help='Upload a sample SA Mobility approval form to preview signature placement.',
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attachment=True,
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)
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preview_pdf_filename = fields.Char(string='PDF Filename')
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preview_pdf_page = fields.Integer(
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string='Preview Page', default=0,
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help='Page to render preview for. 0 = use Default Signature Page.',
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)
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preview_image = fields.Binary(
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string='Preview', readonly=True,
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compute='_compute_preview_image',
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)
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@api.depends(
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'preview_pdf', 'preview_pdf_page', 'sa_default_sig_page',
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'sa_sig_name_x', 'sa_sig_name_y',
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'sa_sig_date_x', 'sa_sig_date_y',
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'sa_sig_x', 'sa_sig_y', 'sa_sig_w', 'sa_sig_h',
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)
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def _compute_preview_image(self):
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for rec in self:
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if not rec.preview_pdf:
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rec.preview_image = False
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continue
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try:
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rec.preview_image = rec._render_preview()
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except Exception as e:
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_logger.warning("SA template preview render failed: %s", e)
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rec.preview_image = False
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def _render_preview(self):
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"""Render the sample PDF page with colored markers for all signature positions."""
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self.ensure_one()
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from odoo.tools.pdf import PdfFileReader
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pdf_bytes = base64.b64decode(self.preview_pdf)
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reader = PdfFileReader(BytesIO(pdf_bytes))
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num_pages = reader.getNumPages()
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page_num = self.preview_pdf_page or self.sa_default_sig_page or 2
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page_idx = page_num - 1
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if page_idx < 0 or page_idx >= num_pages:
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return False
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try:
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from pdf2image import convert_from_bytes
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except ImportError:
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_logger.warning("pdf2image not installed")
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return False
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images = convert_from_bytes(
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pdf_bytes, first_page=page_idx + 1, last_page=page_idx + 1, dpi=150,
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)
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if not images:
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return False
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from PIL import ImageDraw, ImageFont
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img = images[0]
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draw = ImageDraw.Draw(img)
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page = reader.getPage(page_idx)
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page_w_pts = float(page.mediaBox.getWidth())
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page_h_pts = float(page.mediaBox.getHeight())
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img_w, img_h = img.size
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sx = img_w / page_w_pts
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sy = img_h / page_h_pts
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try:
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font_b = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf", 14)
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font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 12)
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font_sm = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 10)
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except Exception:
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font_b = font = font_sm = ImageFont.load_default()
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def _draw_sample_text(label, x_pts, y_top_pts, color, sample_text):
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px_x = int(x_pts * sx)
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px_y = int(y_top_pts * sy)
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draw.text((px_x, px_y - 16), sample_text, fill=color, font=font_b)
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draw.text((px_x, px_y + 2), label, fill=color, font=font_sm)
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def _draw_box(label, x_pts, y_top_pts, w_pts, h_pts, color):
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px_x = int(x_pts * sx)
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px_y = int(y_top_pts * sy)
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pw = int(w_pts * sx)
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ph = int(h_pts * sy)
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for off in range(3):
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draw.rectangle(
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[px_x - off, px_y - off, px_x + pw + off, px_y + ph + off],
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outline=color,
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)
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draw.text((px_x + 4, px_y + 4), label, fill=color, font=font_sm)
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_draw_sample_text(
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"Name", self.sa_sig_name_x, self.sa_sig_name_y,
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'blue', "John Smith",
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)
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_draw_sample_text(
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"Date", self.sa_sig_date_x, self.sa_sig_date_y,
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'purple', "2026-02-17",
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)
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_draw_box(
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"Signature", self.sa_sig_x, self.sa_sig_y,
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self.sa_sig_w, self.sa_sig_h, 'red',
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)
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buf = BytesIO()
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img.save(buf, format='PNG')
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return base64.b64encode(buf.getvalue())
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def get_sa_coordinates(self, page_h=792):
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"""Convert to ReportLab bottom-origin coordinates.
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Template stores Y as distance from TOP of page.
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ReportLab uses Y from BOTTOM.
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For text (name/date): baseline Y = page_h - y_from_top
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For signature image: drawImage Y is bottom-left corner,
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so Y = page_h - y_from_top - height
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"""
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self.ensure_one()
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return {
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'name_x': self.sa_sig_name_x,
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'name_y': page_h - self.sa_sig_name_y,
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'date_x': self.sa_sig_date_x,
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'date_y': page_h - self.sa_sig_date_y,
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'sig_x': self.sa_sig_x,
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'sig_y': page_h - self.sa_sig_y - self.sa_sig_h,
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'sig_w': self.sa_sig_w,
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'sig_h': self.sa_sig_h,
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}
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