Fix use of pymupdf.TOOLS.set_subset_fontnames() and pymupdf.TOOLS.uns…

…et_quad_corrections().

We need to propagate changes to the `extra` submodule.

Checked with new test tests/test_font.py:test_3677().

This addresses #3677.

src/__init__.py

@@ -21605,6 +21605,8 @@ def set_subset_fontnames(on=None):
         '''
         if on is not None:
             _globals.subset_fontnames = bool(on)
+            if g_use_extra:
+                extra.set_subset_fontnames(_globals.subset_fontnames)
         return _globals.subset_fontnames
 
     @staticmethod
@@ -21653,6 +21655,8 @@ def unset_quad_corrections(on=None):
         '''
         if on is not None:
             _globals.skip_quad_corrections = bool(on)
+            if g_use_extra:
+                extra.set_skip_quad_corrections(_globals.skip_quad_corrections)
         return _globals.skip_quad_corrections
 
     # fixme: also defined at top-level.

src/extra.i

@@ -1566,11 +1566,20 @@ enum
     TEXT_FONT_BOLD = 16,
 };
 
-/* todo: implement fns to set these and sync with __init__.py. */
 int g_skip_quad_corrections = 0;
 int g_subset_fontnames = 0;
 int g_small_glyph_heights = 0;
 
+void set_skip_quad_corrections(int on)
+{
+    g_skip_quad_corrections = on;
+}
+
+void set_subset_fontnames(int on)
+{
+    g_subset_fontnames = on;
+}
+
 void set_small_glyph_heights(int on)
 {
     g_small_glyph_heights = on;
@@ -4045,7 +4054,10 @@ fz_rect JM_char_bbox(const mupdf::FzStextLine& line, const mupdf::FzStextChar& c
 static fz_quad JM_char_quad( fz_stext_line *line, fz_stext_char *ch);
 void JM_print_stext_page_as_text(mupdf::FzBuffer& res, mupdf::FzStextPage& page);
 
+void set_skip_quad_corrections(int on);
+void set_subset_fontnames(int on);
 void set_small_glyph_heights(int on);
+
 mupdf::FzRect JM_cropbox(mupdf::PdfObj& page_obj);
 PyObject* get_cdrawings(mupdf::FzPage& page, PyObject *extended=NULL, PyObject *callback=NULL, PyObject *method=NULL);
 

tests/test_font.py

@@ -124,3 +124,26 @@ def test_mupdf_subset_fonts2():
         pages = [i*2 for i in range(n//2)]
         print(f'{pages=}.')
         pymupdf.mupdf.pdf_subset_fonts2(pymupdf._as_pdf_document(doc), pages)
+
+
+def test_3677():
+    pymupdf.TOOLS.set_subset_fontnames(True)
+    path = os.path.abspath(f'{__file__}/../../tests/resources/test_3677.pdf')
+    font_names_expected = [
+            'BCDEEE+Aptos',
+            'BCDFEE+Aptos',
+            'BCDGEE+Calibri-Light',
+            'BCDHEE+Calibri-Light',
+            ]
+    font_names = list()
+    with pymupdf.open(path) as document:
+        for page in document:
+             for block in page.get_text('dict')['blocks']:
+                    if block['type'] == 0:
+                        if 'lines' in block.keys():
+                            for line in block['lines']:
+                                for span in line['spans']:
+                                    font_name=span['font']
+                                    print(font_name)
+                                    font_names.append(font_name)
+    assert font_names == font_names_expected, f'{font_names=}'