Added byte support to FreeTypeFont

Tests/test_imagefont.py

@@ -1096,6 +1096,23 @@ def test_too_many_characters(font: ImageFont.FreeTypeFont) -> None:
         imagefont.getmask("A" * 1_000_001)
 
 
+def test_bytes(font: ImageFont.FreeTypeFont) -> None:
+    assert font.getlength(b"test") == font.getlength("test")
+
+    assert font.getbbox(b"test") == font.getbbox("test")
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask(b"test")),
+        Image.Image()._new(font.getmask("test")),
+    )
+
+    assert_image_equal(
+        Image.Image()._new(font.getmask2(b"test")[0]),
+        Image.Image()._new(font.getmask2("test")[0]),
+    )
+    assert font.getmask2(b"test")[1] == font.getmask2("test")[1]
+
+
 @pytest.mark.parametrize(
     "test_file",
     [

src/PIL/ImageFont.py

@@ -279,7 +279,7 @@ def getmetrics(self) -> tuple[int, int]:
         return self.font.ascent, self.font.descent
 
     def getlength(
-        self, text: str, mode="", direction=None, features=None, language=None
+        self, text: str | bytes, mode="", direction=None, features=None, language=None
     ) -> float:
         """
         Returns length (in pixels with 1/64 precision) of given text when rendered
@@ -354,7 +354,7 @@ def getlength(
 
     def getbbox(
         self,
-        text: str,
+        text: str | bytes,
         mode: str = "",
         direction: str | None = None,
         features: list[str] | None = None,
@@ -511,7 +511,7 @@ def getmask(
 
     def getmask2(
         self,
-        text: str,
+        text: str | bytes,
         mode="",
         direction=None,
         features=None,
@@ -730,7 +730,7 @@ def getbbox(self, text, *args, **kwargs):
             return 0, 0, height, width
         return 0, 0, width, height
 
-    def getlength(self, text: str, *args, **kwargs) -> float:
+    def getlength(self, text: str | bytes, *args, **kwargs) -> float:
         if self.orientation in (Image.Transpose.ROTATE_90, Image.Transpose.ROTATE_270):
             msg = "text length is undefined for text rotated by 90 or 270 degrees"
             raise ValueError(msg)

src/PIL/_imagingft.pyi

@@ -27,7 +27,7 @@ class Font:
     def glyphs(self) -> int: ...
     def render(
         self,
-        string: str,
+        string: str | bytes,
         fill,
         mode=...,
         dir=...,
@@ -51,7 +51,7 @@ class Font:
         /,
     ) -> tuple[tuple[int, int], tuple[int, int]]: ...
     def getlength(
-        self, string: str, mode=..., dir=..., features=..., lang=..., /
+        self, string: str | bytes, mode=..., dir=..., features=..., lang=..., /
     ) -> float: ...
     def getvarnames(self) -> list[bytes]: ...
     def getvaraxes(self) -> list[_Axis] | None: ...

src/_imagingft.c

@@ -233,18 +233,6 @@
     return (PyObject *)self;
 }
 
-static int
-font_getchar(PyObject *string, int index, FT_ULong *char_out) {
-    if (PyUnicode_Check(string)) {
-        if (index >= PyUnicode_GET_LENGTH(string)) {
-            return 0;
-        }
-        *char_out = PyUnicode_READ_CHAR(string, index);
-        return 1;
-    }
-    return 0;
-}
-
 #ifdef HAVE_RAQM
 
 static size_t
@@ -266,28 +254,34 @@
         goto failed;
     }
 
+    Py_ssize_t size;
+    int set_text;
     if (PyUnicode_Check(string)) {
         Py_UCS4 *text = PyUnicode_AsUCS4Copy(string);
-        Py_ssize_t size = PyUnicode_GET_LENGTH(string);
+        size = PyUnicode_GET_LENGTH(string);
         if (!text || !size) {
             /* return 0 and clean up, no glyphs==no size,
                and raqm fails with empty strings */
             goto failed;
         }
-        int set_text = raqm_set_text(rq, text, size);
+        set_text = raqm_set_text(rq, text, size);
         PyMem_Free(text);
-        if (!set_text) {
-            PyErr_SetString(PyExc_ValueError, "raqm_set_text() failed");
+    } else {
+        char *buffer;
+        PyBytes_AsStringAndSize(string, &buffer, &size);
+        if (!buffer || !size) {
+            /* return 0 and clean up, no glyphs==no size,
+               and raqm fails with empty strings */
             goto failed;
         }
-        if (lang) {
-            if (!raqm_set_language(rq, lang, start, size)) {
-                PyErr_SetString(PyExc_ValueError, "raqm_set_language() failed");
-                goto failed;
-            }
-        }
-    } else {
-        PyErr_SetString(PyExc_TypeError, "expected string");
+        set_text = raqm_set_text_utf8(rq, buffer, size);
+    }
+    if (!set_text) {
+        PyErr_SetString(PyExc_ValueError, "raqm_set_text() failed");
+        goto failed;
+    }
+    if (lang && !raqm_set_language(rq, lang, start, size)) {
+        PyErr_SetString(PyExc_ValueError, "raqm_set_language() failed");
         goto failed;
     }
 
@@ -405,28 +399,25 @@
     GlyphInfo **glyph_info,
     int mask,
     int color) {
-    int error, load_flags;
+    int error, load_flags, i;
+    char *buffer = NULL;
     FT_ULong ch;
     Py_ssize_t count;
     FT_GlyphSlot glyph;
     FT_Bool kerning = FT_HAS_KERNING(self->face);
     FT_UInt last_index = 0;
-    int i;
 
     if (features != Py_None || dir != NULL || lang != NULL) {
         PyErr_SetString(
             PyExc_KeyError,
             "setting text direction, language or font features is not supported "
             "without libraqm");
     }
-    if (!PyUnicode_Check(string)) {
-        PyErr_SetString(PyExc_TypeError, "expected string");
-        return 0;
-    }
 
-    count = 0;
-    while (font_getchar(string, count, &ch)) {
-        count++;
+    if (PyUnicode_Check(string)) {
+        count = PyUnicode_GET_LENGTH(string);
+    } else {
+        PyBytes_AsStringAndSize(string, &buffer, &count);
     }
     if (count == 0) {
         return 0;
@@ -445,7 +436,12 @@
     if (color) {
         load_flags |= FT_LOAD_COLOR;
     }
-    for (i = 0; font_getchar(string, i, &ch); i++) {
+    for (i = 0; i < count; i++) {
+        if (buffer) {
+            ch = buffer[i];
+        } else {
+            ch = PyUnicode_READ_CHAR(string, i);
+        }
         (*glyph_info)[i].index = FT_Get_Char_Index(self->face, ch);
         error = FT_Load_Glyph(self->face, (*glyph_info)[i].index, load_flags);
         if (error) {