def shadowed_text(cr, args, x, y, string):
cr.save()
cr.new_path()
cr.move_to(x, y)
if not args.antialias_font:
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
cr.set_font_options(fo)
cr.set_font_size(args.size_font)
cr.text_path(string)
cr.set_source_rgb(*[float(f) for f in args.color_font_shadow.split(',')])
cr.stroke_preserve()
cr.set_source_rgb(*[float(f) for f in args.color_font.split(',')])
cr.fill()
cr.new_path()
cr.restore()
python类FontOptions()的实例源码
def cairo_text_bbox(text, font_params, scale=1.0):
surf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
ctx = cairo.Context(surf)
# The scaling must match the final context.
# If not there can be a mismatch between the computed extents here
# and those generated for the final render.
ctx.scale(scale, scale)
font = cairo_font(font_params)
if use_pygobject:
layout = pangocairo.create_layout(ctx)
pctx = layout.get_context()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
pangocairo.context_set_font_options(pctx, fo)
layout.set_font_description(font)
layout.set_text(text, len(text))
re = layout.get_pixel_extents()[1]
extents = (re.x, re.y, re.x + re.width, re.y + re.height)
else: # pyGtk
pctx = pangocairo.CairoContext(ctx)
pctx.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
layout = pctx.create_layout()
layout.set_font_description(font)
layout.set_text(text)
#print('@@ EXTENTS:', layout.get_pixel_extents()[1])
extents = layout.get_pixel_extents()[1]
w = extents[2] - extents[0]
h = extents[3] - extents[1]
x0 = - w // 2.0
y0 = - h // 2.0
return [x0,y0, x0+w,y0+h]
def cairo_draw_text(x, y, text, font, text_color, c):
c.save()
#print('## TEXT COLOR:', text_color)
c.set_source_rgba(*rgb_to_cairo(text_color))
font = cairo_font(font)
c.translate(x, y)
if use_pygobject:
layout = pangocairo.create_layout(c)
pctx = layout.get_context()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
pangocairo.context_set_font_options(pctx, fo)
layout.set_font_description(font)
layout.set_text(text, len(text))
pangocairo.update_layout(c, layout)
pangocairo.show_layout(c, layout)
else: # pyGtk
pctx = pangocairo.CairoContext(c)
pctx.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
layout = pctx.create_layout()
layout.set_font_description(font)
layout.set_text(text)
pctx.update_layout(layout)
pctx.show_layout(layout)
c.restore()
def draw_text(x, y, text, font, text_color, spacing, c):
c.save()
c.set_source_rgba(*rgb_to_cairo(text_color))
font = cairo_font(font)
c.translate(x, y)
if use_pygobject:
status, attrs, plain_text, _ = pango.parse_markup(text, len(text), '\0')
layout = pangocairo.create_layout(c)
pctx = layout.get_context()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
pangocairo.context_set_font_options(pctx, fo)
layout.set_font_description(font)
layout.set_spacing(spacing * pango.SCALE)
layout.set_text(plain_text, len(plain_text))
layout.set_attributes(attrs)
pangocairo.update_layout(c, layout)
pangocairo.show_layout(c, layout)
else: # pyGtk
attrs, plain_text, _ = pango.parse_markup(text)
pctx = pangocairo.CairoContext(c)
pctx.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
layout = pctx.create_layout()
layout.set_font_description(font)
layout.set_spacing(spacing * pango.SCALE)
layout.set_text(plain_text)
layout.set_attributes(attrs)
pctx.update_layout(layout)
pctx.show_layout(layout)
c.restore()
def text_path(context, font, size, text, debug=False):
"""Create a Pango text layout and return it as a Cairo path"""
context.save()
pg_layout = PangoCairo.create_layout(context)
pg_context = pg_layout.get_context()
font_options = cairo.FontOptions()
font_options.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
PangoCairo.context_set_font_options(pg_context, font_options)
font_descp = "{0} {1:d}".format(font, size)
pg_layout.set_font_description(Pango.FontDescription(font_descp))
pg_layout.set_text(text, -1) # force length calculation
PangoCairo.update_layout(context, pg_layout)
# TODO watch out for ink & logical, need check
extents = pg_layout.get_pixel_extents()[0]
# TODO debug necessary?
if debug:
context.set_source_rgb(0, 0, 0)
PangoCairo.show_layout(context, pg_layout)
print("text_path: ({0}, {1}, {2}, {3})".format(
extents.x, extents.y, extents.width, extents.height))
context.rectangle(extents.x, extents.y, extents.width, extents.height)
context.set_line_width(1.0)
context.set_line_join(cairo.LINE_JOIN_MITER)
context.set_source_rgb(0, 0.8, 0)
context.stroke()
#PangoCairo.layout_path(context, pg_layout)
PangoCairo.layout_line_path(context, pg_layout.get_line(0))
path = context.copy_path()
# clear the path
context.new_path()
context.restore()
return (path, extents, xheight(pg_layout).height)
def cairo_text_bbox(text, font_params, spacing=0, scale=1.0):
surf = cairo.ImageSurface(cairo.FORMAT_ARGB32, 8, 8)
ctx = cairo.Context(surf)
# The scaling must match the final context.
# If not there can be a mismatch between the computed extents here
# and those generated for the final render.
ctx.scale(scale, scale)
font = cairo_font(font_params)
if use_pygobject:
status, attrs, plain_text, _ = pango.parse_markup(text, len(text), '\0')
layout = pangocairo.create_layout(ctx)
pctx = layout.get_context()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
pangocairo.context_set_font_options(pctx, fo)
layout.set_font_description(font)
layout.set_spacing(spacing * pango.SCALE)
layout.set_text(plain_text, len(plain_text))
layout.set_attributes(attrs)
li = layout.get_iter() # Get first line of text
baseline = li.get_baseline() / pango.SCALE
re = layout.get_pixel_extents()[1] # Get logical extents
extents = (re.x, re.y, re.x + re.width, re.y + re.height)
else: # pyGtk
attrs, plain_text, _ = pango.parse_markup(text)
pctx = pangocairo.CairoContext(ctx)
pctx.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
layout = pctx.create_layout()
layout.set_font_description(font)
layout.set_spacing(spacing * pango.SCALE)
layout.set_text(plain_text)
layout.set_attributes(attrs)
li = layout.get_iter() # Get first line of text
baseline = li.get_baseline() / pango.SCALE
#print('@@ EXTENTS:', layout.get_pixel_extents()[1], spacing)
extents = layout.get_pixel_extents()[1] # Get logical extents
return [extents[0], extents[1], extents[2], extents[3], baseline]
def text_block(ctx, obj, text, font, lang="en-US", debug=False):
ctx.save()
lyt = PangoCairo.create_layout(ctx)
pg_ctx = lyt.get_context()
pg_ctx.set_language(Pango.Language.from_string(lang))
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
PangoCairo.context_set_font_options(pg_ctx, fo)
font_family = font.family if not font.replace else font.replace
pg_font = Pango.FontDescription("{} {}px".format(font_family, font.size))
lyt.set_font_description(pg_font)
lyt.set_markup(text, -1) # force length calculation
lyt.set_height(obj.height * Pango.SCALE * 1.5) # TODO what?
lyt.set_width(obj.width * Pango.SCALE)
lyt.set_alignment(Pango.Alignment.CENTER)
#PangoCairo.update_layout(ctx, lyt)
pg_size = lyt.get_pixel_size()
ink, logical = lyt.get_pixel_extents()
while ink.height > obj.height and pg_font.get_size() > 0:
pg_font.set_size(pg_font.get_size() - Pango.SCALE)
lyt.set_font_description(pg_font)
ink, logical = lyt.get_pixel_extents()
#x = obj["x"] - pext.x - pext.width / 2
#y = obj["y"] - pext.y - pext.height / 2
x = (obj.x + obj.width / 2) - ((ink.x + ink.width / 2))
y = (obj.y + obj.height / 2) - ((ink.y + ink.height / 2))
#x = obj["x"]
#y = obj["y"]
if debug:
print("x,y: %s, %s" % (x, y))
ctx.translate(x, y)
PangoCairo.update_layout(ctx, lyt)
PangoCairo.layout_path(ctx, lyt)
ctx.set_line_width(9.0)
ctx.set_line_cap(cairo.LINE_CAP_ROUND)
ctx.set_line_join(cairo.LINE_JOIN_ROUND)
ctx.set_source_rgb(*font.color)
PangoCairo.show_layout(ctx, lyt)
ctx.new_path()
ctx.restore()
if debug:
rectangle(ctx, ink.x, ink.y, ink.width, ink.height, True, 2.0, (0, 1, 0))
rectangle(ctx, obj.x, obj.y, obj.width, obj.height, True, 2.0, (0.8, 0.8, 0))
