111 lines
4.0 KiB
Python
111 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
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import io
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from odoo import models
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from odoo.exceptions import ValidationError
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from odoo.tools.pdf import PdfFileReader, PdfFileWriter, PdfReadError, reshape_text
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from reportlab.pdfgen import canvas
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from reportlab.pdfbase import pdfmetrics
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try:
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from reportlab.pdfbase.pdfmetrics import stringWidth
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except ImportError:
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stringWidth = None
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class SignDocument(models.Model):
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_inherit = 'sign.document'
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def render_document_with_items(self, signed_values=None, values_dict=None, final_log_hash=None):
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base_output = super().render_document_with_items(signed_values, values_dict, final_log_hash)
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if not base_output:
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return base_output
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items_by_page = self._get_sign_items_by_page()
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has_sequence_items = any(
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item.type_id.item_type == 'sequence'
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for page_items in items_by_page.values()
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for item in page_items
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)
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if not has_sequence_items:
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return base_output
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try:
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base_output.seek(0) # IMPORTANT: Reset stream position to start
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base_pdf = PdfFileReader(base_output, strict=False)
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except (ValueError, PdfReadError):
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return base_output
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if not signed_values:
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signed_values, values_dict = self._get_preview_values()
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font = self._get_font()
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normalFontSize = self._get_normal_font_size()
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packet = io.BytesIO()
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# Create canvas using page size similar to image logic
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can = canvas.Canvas(packet, pagesize=self._get_page_size(base_pdf))
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for p in range(0, base_pdf.getNumPages()):
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page = base_pdf.getPage(p)
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width = float(abs(page.mediaBox.getWidth()))
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height = float(abs(page.mediaBox.getHeight()))
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rotation = page.get('/Rotate', 0)
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if rotation and isinstance(rotation, int):
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can.rotate(rotation)
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if rotation == 90:
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width, height = height, width
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can.translate(0, -height)
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elif rotation == 180:
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can.translate(-width, -height)
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elif rotation == 270:
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width, height = height, width
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can.translate(-width, 0)
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items = items_by_page.get(p + 1, [])
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for item in items:
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if item.type_id.item_type != 'sequence':
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continue
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value_dict = signed_values.get(item.id)
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if not value_dict:
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continue
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value = value_dict.get('value')
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# Sequence value is just text string
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if not value:
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continue
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# Render logic similar to text
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value = reshape_text(str(value)) # Ensure string
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can.setFont(font, height * item.height * 0.8)
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# Alignment logic
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if item.alignment == "left":
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can.drawString(width * item.posX, height * (1 - item.posY - item.height * 0.9), value)
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elif item.alignment == "right":
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can.drawRightString(width * (item.posX + item.width), height * (1 - item.posY - item.height * 0.9), value)
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else:
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can.drawCentredString(width * (item.posX + item.width / 2), height * (1 - item.posY - item.height * 0.9), value)
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can.showPage()
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can.save()
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item_pdf = PdfFileReader(packet)
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new_pdf = PdfFileWriter()
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for p in range(0, base_pdf.getNumPages()):
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page = base_pdf.getPage(p)
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if p < item_pdf.getNumPages():
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page.mergePage(item_pdf.getPage(p))
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new_pdf.addPage(page)
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output = io.BytesIO()
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try:
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new_pdf.write(output)
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except PdfReadError:
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raise ValidationError(self.env._("There was an issue generating the document."))
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return output
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