def text_height(self, width, pango_context):
fontn = pango.FontDescription()
fontn.set_family(self.font_family)
fontn.set_size(pango.units_from_double(self.font_size))
pango_context.set_font_description(fontn)
layout = pango.layout.Layout(pango_context)
layout.set_width(pango.units_from_double(width))
layout.set_text(self.text)
_, raw_height = layout.get_size()
return pango.units_to_double(raw_height)
def write_text(ctx, text, start_x, start_y):
ctx.move_to(start_x, start_y)
layout = pangocairocffi.create_layout(ctx)
layout.set_width(pangocffi.units_from_double(width))
#layout.set_alignment(pangocffi.Alignment.CENTER)
fontdesc = pangocffi.FontDescription()
fontdesc.set_size(pangocffi.units_from_double(3))
fontdesc.set_family(font_family)
layout.set_font_description(fontdesc)
layout.set_text(text)
pangocairocffi.show_layout(ctx, layout)
def text2svg(self):
"""Internally used function.
Convert the text to SVG using Pango
"""
size = self.size * 10
line_spacing = self.line_spacing * 10
dir_name = config.get_dir("text_dir")
disable_liga = self.disable_ligatures
if not os.path.exists(dir_name):
os.makedirs(dir_name)
hash_name = self.text2hash()
file_name = os.path.join(dir_name, hash_name) + ".svg"
if os.path.exists(file_name):
return file_name
surface = cairocffi.SVGSurface(file_name, 600, 400)
context = cairocffi.Context(surface)
context.move_to(START_X, START_Y)
settings = self.text2settings()
offset_x = 0
last_line_num = 0
layout = pangocairocffi.create_layout(context)
layout.set_width(pangocffi.units_from_double(600))
for setting in settings:
family = setting.font
style = self.str2style(setting.slant)
weight = self.str2weight(setting.weight)
text = self.text[setting.start : setting.end].replace("\n", " ")
fontdesc = pangocffi.FontDescription()
fontdesc.set_size(pangocffi.units_from_double(size))
if family:
fontdesc.set_family(family)
fontdesc.set_style(style)
fontdesc.set_weight(weight)
layout.set_font_description(fontdesc)
if setting.line_num != last_line_num:
offset_x = 0
last_line_num = setting.line_num
context.move_to(
START_X + offset_x, START_Y + line_spacing * setting.line_num
)
pangocairocffi.update_layout(context, layout)
if disable_liga:
text = escape(text)
layout.set_markup(f"<span font_features='liga=0'>{text}</span>")
else:
layout.set_text(text)
logger.debug(f"Setting Text {text}")
pangocairocffi.show_layout(context, layout)
offset_x += pangocffi.units_to_double(layout.get_size()[0])
surface.finish()
return file_name
def test_t2s() -> None:
size = 1
temp_pango_text = Text("Helloworld", t2s={"world": ITALIC})
surface = cairocffi.SVGSurface(filename, WIDTH, HEIGTH)
context = cairocffi.Context(surface)
context.move_to(START_X, START_Y)
layout = pangocairocffi.create_layout(context)
layout.set_width(pangocffi.units_from_double(WIDTH))
fontdesc = pangocffi.FontDescription()
fontdesc.set_size(pangocffi.units_from_double(size * 10))
layout.set_font_description(fontdesc)
layout.set_markup(
'Hello<span style="italic">world</span>') # yay, pango markup
pangocairocffi.show_layout(context, layout)
surface.finish()
assert compare_SVGObject_with_PangoText(temp_pango_text, filename)
def render_text(self, content: FormattedText, width):
fontn = pango.FontDescription()
fontn.set_family(content.font_family)
fontn.set_size(pango.units_from_double(content.font_size))
self.pango_context.set_font_description(fontn)
layout = pango.layout.Layout(self.pango_context)
layout.set_text(content.text)
if content.alignment == 'l':
layout.set_alignment(pango.Alignment.LEFT)
elif content.alignment == 'c':
layout.set_alignment(pango.Alignment.CENTER)
elif content.alignment == 'r':
layout.set_alignment(pango.Alignment.RIGHT)
layout.set_width(pango.units_from_double(width))
pc.update_layout(self.cairo_context, layout)
pc.show_layout(self.cairo_context, layout)
def test_rtl_text_to_svgobject() -> None:
"""Checks number of submobjects generated when directly
called using ``SVGMobject``"""
size = 1
text = RTL_TEXT.replace("\n", "")
temp_pango_text = Text(text, size=1)
surface = cairocffi.SVGSurface(filename, WIDTH, HEIGTH)
context = cairocffi.Context(surface)
context.move_to(START_X, START_Y)
layout = pangocairocffi.create_layout(context)
layout.set_width(pangocffi.units_from_double(WIDTH))
fontdesc = pangocffi.FontDescription()
fontdesc.set_size(pangocffi.units_from_double(size * 10))
layout.set_font_description(fontdesc)
layout.set_text(text)
pangocairocffi.show_layout(context, layout)
surface.finish()
assert compare_SVGObject_with_PangoText(temp_pango_text, filename)
def test_tabs_replace() -> None:
"""Checks whether are there in end svg image.
Pango should handle tabs and line breaks."""
size = 1
temp_pango_text = Text("hello\thi\nf")
assert temp_pango_text.text == "hellohif"
surface = cairocffi.SVGSurface(filename, WIDTH, HEIGTH)
context = cairocffi.Context(surface)
context.move_to(START_X, START_Y)
layout = pangocairocffi.create_layout(context)
layout.set_width(pangocffi.units_from_double(WIDTH))
fontdesc = pangocffi.FontDescription()
fontdesc.set_size(pangocffi.units_from_double(size * 10))
layout.set_font_description(fontdesc)
layout.set_text("hellohif")
pangocairocffi.show_layout(context, layout)
surface.finish()
assert compare_SVGObject_with_PangoText(temp_pango_text, filename)
def test_font_face() -> None:
"""Checks font face using submobject len"""
size = 1
text = RTL_TEXT.replace("\n", "")
font_face = "sans"
temp_pango_text = Text(text, size=1, font=font_face)
surface = cairocffi.SVGSurface(filename, WIDTH, HEIGTH)
context = cairocffi.Context(surface)
context.move_to(START_X, START_Y)
layout = pangocairocffi.create_layout(context)
layout.set_width(pangocffi.units_from_double(WIDTH))
fontdesc = pangocffi.FontDescription()
fontdesc.set_family(font_face)
fontdesc.set_size(pangocffi.units_from_double(size * 10))
layout.set_font_description(fontdesc)
layout.set_text(text)
pangocairocffi.show_layout(context, layout)
surface.finish()
assert compare_SVGObject_with_PangoText(temp_pango_text, filename)
def __init__(self, args: Namespace):
self.width = float(args.width)
self.height = float(args.height)
self.margin = float(args.margin)
self.line_width = float(self.width - 2 * self.margin)
self.line_height = float(16)
self.page_height = float(self.height - 2 * self.margin)
self.pg_gap = float(16)
self.column_gap = float(10)
self.min_word_gap = float(5)
self.indent = float(0)
self.quote_indent = float(50)
self.text_align = "justify"
self.font_size = float(10)
self.font = "rm"
self.fonts = {}
self.fonts["rm"] = pango.FontDescription()
self.fonts["rm"].set_family(args.font)
self.fonts["rm"].set_size(pango.units_from_double(10))
print(f"Paperin koko {self.width}x{self.height}")
print(f"Piirtoalueen koko {self.line_width}x{self.page_height}")
def addFont(self, varname, fontname):
print(f"Lisätään fontti {varname} = {repr(fontname)}")
self.fonts[varname] = pango.FontDescription()
self.fonts[varname].set_family(fontname)
self.fonts[varname].set_size(pango.units_from_double(10))
