Draw font text line gap seems incorrect #6469
Description
Python: 3.9
Pillow: 9.2.0
I use this font: ark-pixel-font-12px-otf v2022.07.05
https://github.com/TakWolf/ark-pixel-font/releases
The font has zero line_gap:
font_size = 12
upm = 1200
line_height = 1200 (ascent - descent)
line_gap = 0
(xml gen use https://github.com/fonttools/fonttools ttx tools)
<hhea>
<tableVersion value="0x00010000"/>
<ascent value="1000"/>
<descent value="-200"/>
<lineGap value="0"/> <----- This
<advanceWidthMax value="1200"/>
<minLeftSideBearing value="0"/>
<minRightSideBearing value="0"/>
<xMaxExtent value="1200"/>
<caretSlopeRise value="1"/>
<caretSlopeRun value="0"/>
<caretOffset value="0"/>
<reserved0 value="0"/>
<reserved1 value="0"/>
<reserved2 value="0"/>
<reserved3 value="0"/>
<metricDataFormat value="0"/>
<numberOfHMetrics value="9437"/>
</hhea>and
<OS_2>
............
<sTypoAscender value="1000"/>
<sTypoDescender value="-200"/>
<sTypoLineGap value="0"/> <----- and this
<usWinAscent value="1000"/>
<usWinDescent value="200"/>
<ulCodePageRange1 value="00000000 00000000 00000000 00000000"/>
<ulCodePageRange2 value="00000000 00000000 00000000 00000000"/>
<sxHeight value="600"/>
<sCapHeight value="800"/>
<usDefaultChar value="0"/>
<usBreakChar value="32"/>
<usMaxContext value="0"/>
</OS_2>In pillow:
from PIL import ImageFont, Image, ImageDraw
if __name__ == '__main__':
font = ImageFont.truetype('build/outputs/ark-pixel-12px-latin.otf', 12)
image = Image.new('RGBA', (400, 400), (255, 255, 255))
draw = ImageDraw.Draw(image)
text = '方舟像\n素字体'
text_size = draw.textsize(text, font=font, spacing=0)
print(text_size)
text_bbox = draw.textbbox((0, 0), text, font=font, spacing=0)
print(text_bbox)
draw.text((0, 0), text, fill=(0, 0, 0), font=font, spacing=0)
image.save('build/outputs/test.png')
Actually there is -2 line_gap
result:
(36, 20) -> expect (36, 24)
(0, 1, 36, 22) -> expect (_, _, 36, 24)