Merge pull request #678 from chinapandaman/PPF-677

PPF-677: draw text support new line symbol

PyPDFForm/wrapper.py

@@ -8,7 +8,7 @@
 
 from .adapter import fp_or_f_obj_or_stream_to_stream
 from .constants import (DEFAULT_FONT, DEFAULT_FONT_COLOR, DEFAULT_FONT_SIZE,
-                        VERSION_IDENTIFIER_PREFIX, VERSION_IDENTIFIERS)
+                        VERSION_IDENTIFIER_PREFIX, VERSION_IDENTIFIERS, NEW_LINE_SYMBOL)
 from .coordinate import generate_coordinate_grid
 from .filler import fill, simple_fill
 from .font import register_font
@@ -244,6 +244,9 @@ def draw_text(
         new_widget.font_size = kwargs.get("font_size", DEFAULT_FONT_SIZE)
         new_widget.font_color = kwargs.get("font_color", DEFAULT_FONT_COLOR)
 
+        if NEW_LINE_SYMBOL in text:
+            new_widget.text_lines = text.split(NEW_LINE_SYMBOL)
+
         watermarks = create_watermarks_and_draw(
             self.stream,
             page_number,

tests/test_functional.py

@@ -222,6 +222,25 @@ def test_draw_text_on_one_page(template_stream, pdf_samples, request):
         assert obj.stream == expected
 
 
+def test_draw_text_new_line_symbol(template_stream, pdf_samples, request):
+    expected_path = os.path.join(pdf_samples, "sample_pdf_with_drawn_text_new_line_symbol.pdf")
+    with open(expected_path, "rb+") as f:
+        obj = PdfWrapper(template_stream).draw_text(
+            "test\ntest\ntest",
+            1,
+            300,
+            225,
+        )
+
+        request.config.results["expected_path"] = expected_path
+        request.config.results["stream"] = obj.read()
+
+        expected = f.read()
+
+        assert len(obj.stream) == len(expected)
+        assert obj.stream == expected
+
+
 def test_draw_image_on_one_page(template_stream, image_samples, pdf_samples, request):
     expected_path = os.path.join(pdf_samples, "sample_pdf_with_image.pdf")
     with open(expected_path, "rb+") as f: