On Dec 23, 9:51 pm, Ivan Illarionov ivan.illario...@gmail.com wrote:
On Dec 23, 11:22 pm, Ivan Illarionov ivan.illario...@gmail.com
wrote:
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote:
Hey all,
anybody know, if there´s a way to specify the kerning of a font, when
you draw text withPIL?
I´d like to achieve the same effect that you get, when you set a
negative kerning in Gimp/Photshop - ie. reduce the spacing between
glyphs.
CanPILdo that or do I use another lib for that?
Thx for any pointers some nice xmas days to U all!
carsten
No.PILcan't do that. I suggest combination of cairo/pango/pangocairo
(pycairo and pygtk packages).
Ivan
I found a little helper function that does what you want (and more)
import cairo
import pango
import pangocairo
def draw_text(surface, context, text, font=sans 14, position=None,
color=None,
box_width=None,
alignment=pango.ALIGN_CENTER,
line_spacing=None, letter_spacing=None,
extra_kerning=None):
if color is None:
color = (0.0, 0.0, 0.0)
context.set_source_rgb(*color)
pc = pangocairo.CairoContext(context)
layout = pc.create_layout()
layout.set_text(text)
layout.set_font_description(pango.FontDescription(font))
if box_width: layout.set_width(box_width)
layout.set_alignment(alignment)
if line_spacing: layout.set_spacing(spacing)
alist = pango.AttrList()
if letter_spacing:
alist.insert(pango.AttrLetterSpacing(letter_spacing, 0, len
(text)))
if extra_kerning:
for pos, kern in extra_kerning.iteritems():
alist.insert(pango.AttrLetterSpacing(kern, pos, pos
+1))
layout.set_attributes(alist)
if position is None:
width, height = surface.get_width(), surface.get_height()
w, h = layout.get_pixel_size()
position = (width/2.0 - w/2.0, height/2.0 - h/2.0)
context.move_to(*position)
pc.show_layout(layout)
And example usage:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
context = cairo.Context(surface)
draw_text(surface, context, 'Hello world!',
font=sans 52, color=(.25,.28,.33),
letter_spacing=-6000,
extra_kerning={0:-9000, 1:-1000, 6:6000, 7:-15000, 8:5000,
9:-7000})
surface.write_to_png(hello.png)
--
Ivan
Works great, thanks a lot!!
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