Kozea/WeasyPrint
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First and last characters, and widths

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This commit is contained in:
Lucie Anglade 2020-05-08 15:07:51 +02:00
parent d4b7f242c3
commit a6ff868094
1 changed files with 18 additions and 4 deletions
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22
weasyprint/document.py
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@ -90,6 +90,9 @@ class Font:
self.glyphs = {glyph_string.glyphs[x].glyph for x in range(num_glyphs)}
self.size = pango.pango_units_to_double(
pango.pango_font_description_get_size(font_description))
self.first_char = None
self.last_char = None
self.widths = None
def add_glyphs(self, glyph_item):
glyph_string = glyph_item.glyphs
@ -98,12 +101,17 @@ class Font:
glyph_string.glyphs[x].glyph for x in range(num_glyphs)}
def compute_glyphs_values(self):
first_char = min(self.glyphs)
last_char = max(self.glyphs)
font_bbox = [0, 0, 0, 0]
widths = [0] * (last_char - first_char + 1)
ink_rect = ffi.new('PangoRectangle *')
logical_rect = ffi.new('PangoRectangle *')
for glyph in self.glyphs:
pango.pango_font_get_glyph_extents(
self.pango_font, glyph, ink_rect, ffi.NULL)
self.pango_font, glyph, ink_rect, logical_rect)
x1, y1, x2, y2 = (
ink_rect.x, -ink_rect.y - ink_rect.height,
ink_rect.x + ink_rect.width, -ink_rect.y)
@ -116,9 +124,15 @@ class Font:
if y2 > font_bbox[3]:
font_bbox[3] = y2
widths[first_char - glyph] = logical_rect.width
ffi.release(ink_rect)
ffi.release(logical_rect)
self.bbox = [value / self.size for value in font_bbox]
self.cap_height = font_bbox[1]
self.first_char = first_char
self.last_char = last_char
self.widths = widths
class Context(pydyf.Stream):
@ -939,10 +953,10 @@ class Document:
'Type': '/Font',
'Subtype': '/TrueType',
'BaseFont': font.name,
'FirstChar': 32,
'LastChar': 99,
'FirstChar': font.first_char,
'LastChar': font.last_char,
'Encoding': '/WinAnsiEncoding',
'Widths': pydyf.Array((99 - 32 + 1) * [1000]),
'Widths': pydyf.Array(font.widths),
'FontDescriptor': pydyf.Dictionary({
'FontName': font.name,
'FontFamily': pydyf.String(font.family),