ink_annotation: compute the rectangle's x from the x coordinates

CHANGELOG.md

@@ -68,6 +68,7 @@ This can also be enabled programmatically with `warnings.simplefilter('default',
 * SVG import: `opacity`, `fill-opacity` and `stroke-opacity` accept percentages (`50%`), and an out-of-range `opacity` is clamped to 0-1 like the other two instead of raising `ValueError` - thanks to @RavSinghChandan
 * css `rgb()` colors accept percentages, as in `rgb(100%, 0%, 50%)` (clamped to 0%-100%), in SVG import and `FPDF.write_html()` instead of raising `ValueError` - thanks to @RavSinghChandan
 * hex color strings, such as in `set_fill_color("#...")`, must contain only hexadecimal digits: `"#1 2345"` and `"#+12345"` were silently read as `#012345`, and `"#xyz"` raised an unclear `invalid literal for int()` error; all now raise `ValueError: ... could not be interpreted as a RGB(A) hex string` - thanks to @RavSinghChandan
+* `FPDF.ink_annotation()` computes the horizontal position of the annotation rectangle (`/Rect`) from the x coordinates of the path instead of the y coordinates, so the rectangle encloses the drawn path; it could previously lie outside the page - thanks to @RavSinghChandan
 * `FPDF.embed_file()` accepts empty byte content and rejects simultaneous path and byte sources even when the bytes are empty.
 * `set_text_color()`, `set_fill_color()` and `set_draw_color()` report a component outside 0-255 as given: `set_text_color(300)` now raises `ValueError: color component 300 not in range [0, 255]` instead of `1.1764705882352942 not in range [0.0, 1.0]` - thanks to @RavSinghChandan
 * An internal link with an index that `FPDF.add_link()` did not return now raises a clear `ValueError`, like a link without a page number, instead of a bare `AssertionError` (or a `KeyError` with `python -O`) - thanks to @RavSinghChandan

fpdf/fpdf.py

@@ -3536,7 +3536,7 @@ def ink_annotation(
         y_max = max(ink_list[1::2])
         annotation = AnnotationDict(
             "Ink",
-            x=y_min,
+            x=x_min,
             y=y_max,
             width=x_max - x_min,
             height=y_max - y_min,

test/test_annotations.py

@@ -198,6 +198,14 @@ def test_ink_annotation(tmp_path):
     assert_pdf_equal(pdf, HERE / "ink_annotation.pdf", tmp_path)
 
 
+def test_ink_annotation_rect_encloses_the_path():
+    pdf = FPDF(unit="pt")
+    pdf.add_page()
+    annotation = pdf.ink_annotation([(100, 50), (200, 150)])
+    # page height is 841.89pt: y=150 and y=50 become 691.89 and 791.89
+    assert annotation.rect == "[100 691.89 200 791.89]"
+
+
 def test_free_text_annotation_all_parameters(tmp_path):
     pdf = FPDF()
     pdf.add_page()