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Merge pull request #1072 from wiredfool/pr960

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Fix for corrupted bitmaps embedded in truetype fonts.
This commit is contained in:
Hugo 2015-01-08 10:38:06 +02:00
commit efeca060a3
4 changed files with 33 additions and 4 deletions
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Tests/fonts/DejaVuSans-bitmap.ttf Normal file
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Tests/fonts/DejaVuSans.ttf Normal file
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24
Tests/test_imagefont_bitmap.py Normal file
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@ -0,0 +1,24 @@
from helper import unittest, PillowTestCase
from PIL import Image, ImageFont, ImageDraw
class TestImageFontBitmap(PillowTestCase):
def test_similar(self):
text = 'EmbeddedBitmap'
font_outline = ImageFont.truetype(font='Tests/fonts/DejaVuSans.ttf', size=24)
font_bitmap = ImageFont.truetype(font='Tests/fonts/DejaVuSans-bitmap.ttf', size=24)
size_outline, size_bitmap = font_outline.getsize(text), font_bitmap.getsize(text)
size_final = max(size_outline[0], size_bitmap[0]), max(size_outline[1], size_bitmap[1])
im_bitmap = Image.new('RGB', size_final, (255, 255, 255))
im_outline = im_bitmap.copy()
draw_bitmap, draw_outline = ImageDraw.Draw(im_bitmap), ImageDraw.Draw(im_outline)
# Metrics are different on the bitmap and ttf fonts, more so on some platforms
# and versions of freetype than others. Mac has a 1px difference, linux doesn't.
draw_bitmap.text((0, size_final[1] - size_bitmap[1]),
text, fill=(0, 0, 0), font=font_bitmap)
draw_outline.text((0, size_final[1] - size_outline[1]),
text, fill=(0, 0, 0), font=font_outline)
self.assert_image_similar(im_bitmap, im_outline, 20)
if __name__ == '__main__':
unittest.main()

13
_imagingft.c
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@ -243,7 +243,11 @@ font_getsize(FontObject* self, PyObject* args)
&delta); &delta);
x += delta.x; x += delta.x;
} }
error = FT_Load_Glyph(face, index, FT_LOAD_DEFAULT);
/* Note: bitmap fonts within ttf fonts do not work, see #891/pr#960
* Yifu Yu<root@jackyyf.com>, 2014-10-15
*/
error = FT_Load_Glyph(face, index, FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP);
if (error) if (error)
return geterror(error); return geterror(error);
if (i == 0) if (i == 0)
@ -316,7 +320,8 @@ font_getabc(FontObject* self, PyObject* args)
int index, error; int index, error;
face = self->face; face = self->face;
index = FT_Get_Char_Index(face, ch); index = FT_Get_Char_Index(face, ch);
error = FT_Load_Glyph(face, index, FT_LOAD_DEFAULT); /* Note: bitmap fonts within ttf fonts do not work, see #891/pr#960 */
error = FT_Load_Glyph(face, index, FT_LOAD_DEFAULT|FT_LOAD_NO_BITMAP);
if (error) if (error)
return geterror(error); return geterror(error);
a = face->glyph->metrics.horiBearingX / 64.0; a = face->glyph->metrics.horiBearingX / 64.0;
@ -363,8 +368,8 @@ font_render(FontObject* self, PyObject* args)
} }
im = (Imaging) id; im = (Imaging) id;
/* Note: bitmap fonts within ttf fonts do not work, see #891/pr#960 */
load_flags = FT_LOAD_RENDER; load_flags = FT_LOAD_RENDER|FT_LOAD_NO_BITMAP;
if (mask) if (mask)
load_flags |= FT_LOAD_TARGET_MONO; load_flags |= FT_LOAD_TARGET_MONO;