def paint_arrow(self, xl, xr, y, arrow_type, left):
if arrow_type == "menu_entry":
fgcolor = self.unselected_color
elif arrow_type == "menu_entry_selected":
fgcolor = self.selected_color
elif arrow_type == "menu_entry_activated":
fgcolor = (1.0 - self.selected_color[0],
1.0 - self.selected_color[1],
1.0 - self.selected_color[2], self.selected_color[3])
else:
return
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
self.cr.set_font_options(fo)
self.cr.set_antialias(cairo.ANTIALIAS_NONE)
x = (xl + xr) / 2.0
h = (self.cached_menu_size / 2.0) - 1.0
self.cr.set_source_rgba(fgcolor[0], fgcolor[1], fgcolor[2], fgcolor[3])
self.cr.move_to(x, y - h)
if (left):
self.cr.line_to(x - self.cached_menu_size + 2, y)
else:
self.cr.line_to(x + self.cached_menu_size - 2, y)
self.cr.line_to(x, y + h)
self.cr.line_to(x, y - h)
self.cr.fill()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_DEFAULT)
self.cr.set_font_options(fo)
self.cr.set_antialias(cairo.ANTIALIAS_DEFAULT)
def _generate_surface(self):
bpp = 4
#if self._format == cairo.FORMAT_RGB32:
# bpp = 3
self._data = array.array('c', chr(0) * self.width * self.height * bpp)
stride = self.width * bpp
self.surface = cairo.ImageSurface.create_for_data(
self._data, self._format, self.width, self.height, stride)
self._texture = glGenTextures(1)
self.cr = cairo.Context(self.surface)
self.pango = pangocairo.CairoContext(self.cr)
self.layout = self.pango.create_layout()
# force subpixel rendering
self.font_options = cairo.FontOptions()
self.font_options.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
self.cr.set_font_options(self.font_options)
glBindTexture(GL_TEXTURE_2D, self._texture)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, self._filter)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, self._filter)
self.invalidate()
def set_image_from_text(self, button, text, font_family="Georgia", font_size=12, font_slant=cairo.FONT_SLANT_NORMAL, font_weight=cairo.FONT_WEIGHT_NORMAL, border=False, line_padding=3, antialiasing=cairo.ANTIALIAS_DEFAULT):
data = array.array('B', [0] * 2048)
stride = cairo.ImageSurface.format_stride_for_width(cairo.FORMAT_A8, ICON_WIDTH)
image = cairo.ImageSurface.create_for_data(data, cairo.FORMAT_A8, ICON_WIDTH, ICON_HEIGHT, stride)
cr = cairo.Context(image)
cr.set_source_rgba(1.0, 1.0, 1.0, 255.0)
cr.select_font_face(font_family, font_slant, font_weight)
cr.set_font_size(font_size)
fo = cairo.FontOptions()
fo.set_antialias(antialiasing)
cr.set_font_options(fo)
lines = text.split('\n')
for y, line in enumerate(lines):
x_bearing, y_bearing, width, height = cr.text_extents(line)[:4]
#cr.move_to(0.5 - ICON_WIDTH / 2 - x_bearing, 0.5 - ICON_HEIGHT / 2 - y_bearing)
cr.move_to(ICON_WIDTH / 2 - width / 2, ICON_HEIGHT / 2 + height / 2 + y*(height+line_padding) - (height/1.5)*(len(lines)-1))
cr.show_text(line)
if border:
cr.move_to(0,0)
cr.line_to(64,0)
cr.line_to(64,32)
cr.line_to(0,32)
cr.line_to(0,0)
cr.stroke()
self.set_image(button, data)
def paint_pattern(self, cr, x, y, antialias, label="", background=WHITE, foreground=BLACK):
w, h = self.get_size()
bw = w//4
bh = h//4
FONT_SIZE = w//8
cr.set_operator(cairo.OPERATOR_SOURCE)
cr.set_source_rgb(*background)
cr.rectangle(x*bw, y*bh, bw, bh)
cr.fill()
fo = cairo.FontOptions()
fo.set_antialias(antialias)
cr.set_font_options(fo)
cr.set_antialias(antialias)
cr.set_source_rgb(*foreground)
cr.set_font_size(FONT_SIZE)
cr.move_to(x*bw+bw//2-FONT_SIZE//2, y*bh+bh//2+FONT_SIZE//3)
cr.show_text(PATTERN)
cr.stroke()
if label:
cr.set_font_size(15)
cr.move_to(x*bw+bw//2-FONT_SIZE//2, y*bh+bh*3//4+FONT_SIZE//3)
cr.show_text(ANTIALIAS[antialias])
cr.stroke()
def draw_text(self, gc, x, y, s, prop, angle, ismath=False, mtext=None):
# docstring inherited
# Note: (x, y) are device/display coords, not user-coords, unlike other
# draw_* methods
if ismath:
self._draw_mathtext(gc, x, y, s, prop, angle)
else:
ctx = gc.ctx
ctx.new_path()
ctx.move_to(x, y)
ctx.save()
ctx.select_font_face(*_cairo_font_args_from_font_prop(prop))
ctx.set_font_size(prop.get_size_in_points() * self.dpi / 72)
opts = cairo.FontOptions()
opts.set_antialias(
cairo.ANTIALIAS_DEFAULT if mpl.rcParams["text.antialiased"]
else cairo.ANTIALIAS_NONE)
ctx.set_font_options(opts)
if angle:
ctx.rotate(np.deg2rad(-angle))
ctx.show_text(s)
ctx.restore()
def render_labels(self, labels, color_rgba=None):
surface = self.get_surface()
if self.canvas is None or not hasattr(self.canvas, 'df_shape_centers'):
# Canvas is not initialized, so return empty cairo surface.
return surface
cairo_context = cairo.Context(surface)
color_rgba = (1, 1, 1, 1) if color_rgba is None else color_rgba
if not isinstance(color_rgba, pd.Series):
shape_rgba_colors = pd.Series(
[color_rgba], index=self.canvas.df_shape_centers.index)
else:
shape_rgba_colors = color_rgba
font_options = cairo.FontOptions()
font_options.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
cairo_context.set_font_options(font_options)
for shape_id, label_i in labels.iteritems():
cairo_context.set_source_rgba(*shape_rgba_colors.ix[shape_id])
self.render_label(cairo_context,
shape_id,
label_i,
label_scale=0.6)
return surface
def render(self, text):
"""Render a text string.
text: Render this text
Returns a 2-dimensional array indexed [height,width]. The width is
dynamic and chosen such that the text fits exactly. The values
represent grayscales.
"""
if len(text) < 1:
return numpy.zeros([self.height, self.width], self._TYPE)
width = len(text) * self.height * 2
data = numpy.zeros([self.height, width], self._TYPE)
surface = cairo.ImageSurface.create_for_data(data, self._FORMAT, width, self.height)
c = cairo.Context(surface)
c.set_source_rgba(1, 1, 1, 0)
c.paint()
c.set_source_rgba(0, 0, 0, 1)
c.select_font_face(self._chooseFont(), cairo.FONT_SLANT_NORMAL, cairo.FONT_WEIGHT_NORMAL)
# The slight horizontal scaling compensates for the non-square pixels.
# The font matrix can set the size but *else* is ineffective with bitmap fonts.
c.set_font_matrix(cairo.Matrix(self.fontsize*1.2, 0, 0, self.fontsize, 0, 0))
c.set_font_options(cairo.FontOptions(cairo.HINT_METRICS_ON, cairo.HINT_STYLE_FULL))
fascent, fdescent, fheight, fxadvance, fyadvance = c.font_extents()
xbearing, ybearing, awidth, aheight, xadvance, yadvance = c.text_extents(text)
c.move_to(xbearing, self.height-fdescent)
c.show_text(text)
surface.flush()
return data[:,0:int(xadvance+xbearing)]
def _build_csf(self):
"Builds and caches a Cairo Scaled Font."
fontFace = cr.ToyFontFace(self.name)
identityMatrix = cr.Matrix()
fontOptions = cr.FontOptions() # get defaults
scaling = self.size * self._gschemScalingConstant
scalingMatrix = cr.Matrix(xx = scaling, yy = scaling)
self._csf = cr.ScaledFont(fontFace, scalingMatrix,
identityMatrix, fontOptions)
def main():
if len(sys.argv) != 3:
usage()
sys.exit(1)
version = sys.argv[1]
imgpath = sys.argv[2]
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 140,24)
ctx = cairo.Context(surface)
c = pangocairo.CairoContext(ctx)
l = c.create_layout()
font_desc = pango.FontDescription('Grixel Acme 7 Wide Bold 14')
l.set_font_description(font_desc)
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
c.set_font_options(fo)
pangocairo.context_set_font_options (l.get_context(), fo)
l.set_text('theory')
set_context_color(ctx,'#333333')
ctx.move_to(4,-8)
c.show_layout(l)
c.update_layout(l)
l = c.create_layout()
font_desc = pango.FontDescription('Grixel Acme 7 Wide 7')
attr = pango.AttrList()
attr.insert(pango.AttrLetterSpacing(1200,0,100))
l.set_attributes(attr)
l.set_font_description(font_desc)
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
pangocairo.context_set_font_options (l.get_context(), fo)
l.set_text(version)
ctx.move_to(105,8)
ctx.set_source_rgb (.33,.33,.33)
c.show_layout(l)
c.update_layout(l)
surface.write_to_png(imgpath)
def create_pango_context(self):
pango_context = self.pango_fontmap.create_context()
options = cairo.FontOptions()
options.set_hint_metrics(cairo.HINT_METRICS_OFF)
pangocairo.context_set_font_options(pango_context, options)
pangocairo.context_set_resolution(pango_context, 72)
return pango_context
def createScaledFont(family,
size,
slant=cairo.FONT_SLANT_NORMAL,
weight=cairo.FONT_WEIGHT_NORMAL):
""" Simple helper function to create a cairo ScaledFont. """
face = cairo.ToyFontFace(family, slant, weight)
DEFAULT_FONT_OPTIONS = cairo.FontOptions()
DEFAULT_FONT_OPTIONS.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
return cairo.ScaledFont(face, cairo.Matrix(xx=size, yy=size),
cairo.Matrix(), DEFAULT_FONT_OPTIONS)
def test_cairo_font_options(self):
window = Gtk.Window()
if Gtk._version == "4.0":
window.set_font_options(cairo.FontOptions())
font_opts = window.get_font_options()
else:
screen = window.get_screen()
font_opts = screen.get_font_options()
assert font_opts is not None
self.assertTrue(isinstance(font_opts.get_subpixel_order(), int))
def np_text(self, text, fontname='times', fontsize=48.0, angle=0):
''' Generate an text within an array
:Parameters:
`text` : str
Text to be generated
`fontname` : str
Font family name
`fontsize` : int
Font size
`angle` : float
Text angle
'''
# Dummy surface to get text extents
surface = cairo.ImageSurface(cairo.FORMAT_A8, 1, 1)
ctx = cairo.Context(surface)
ctx.set_font_size(fontsize)
(x, y, w, h, dx, dy) = ctx.text_extents(
text
) # 6 element tupple - (x_bearing, y_bearing, width, height, x_advance, y_advance)
size = (
int(np.sqrt(w**2 + h**2) + 1) // 4
) * 4 + 4 # ** = power symbol. 2**3 is 2^3. // is integer division
# Actual surface
surface = cairo.ImageSurface(cairo.FORMAT_A8, size,
size) #over-write old surface
ctx = cairo.Context(surface) #over-write old ctx
options = cairo.FontOptions(
) #creates a FontOptions object with defualt values
options.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
options.set_hint_style(cairo.HINT_STYLE_FULL)
ctx.set_font_options(
options) #use the defualt font options values from above
ctx.set_source_rgba(0, 0, 0, 0)
ctx.paint() #paint blank canvas, essentially
ctx.set_source_rgba(1, 1, 1, 1) #change color to white and opaque
ctx.select_font_face(fontname) #make font 'sans'
ctx.set_font_size(fontsize)
ctx.move_to(
size // 2, size //
2) #from strange math above ((int(np.sqrt(w**2+h**2)+1)//4)*4+4 )
ctx.rotate(angle)
ctx.rel_move_to(-w // 2, h // 2)
ctx.show_text(text) #draw text on surface
# Make an array oput of surface
buf = surface.get_data() #raw binary data representing the surface
Z = np.frombuffer(
buf, np.uint8) # Interpret a buffer as a 1-dimensional array.
Z.shape = (
size, size, 1
) # shape the buffer to the size of the surface in pixels. the array is the values for each pixel from 0-255. empty space is represented by 0
return self.np_crop(Z, 0) # jump to crop method!
def __on_start_training(self, widget):
self.lock_widgets(True)
# Initialize the cairo surface and relative context
surface = cairo.ImageSurface(cairo.FORMAT_RGB24, IMG_PIXELS,
IMG_PIXELS)
ctx = cairo.Context(surface)
# Disable antialias for font rendering
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
fo.set_hint_style(cairo.HINT_STYLE_NONE)
ctx.set_font_options(fo)
train_dict = defaultdict(list)
for fntbtn in self.fonts.foreach():
font = fntbtn.get_font_name()
# Select new font face
ctx.select_font_face(font, cairo.FONT_SLANT_NORMAL,
cairo.FONT_WEIGHT_NORMAL)
ctx.set_font_size(IMG_PIXELS)
for char in self.get_alphabet():
ctx.set_source_rgb(1, 1, 1)
ctx.rectangle(0, 0, IMG_PIXELS, IMG_PIXELS)
ctx.fill()
ctx.set_source_rgb(0, 0, 0)
x_bearing, y_bearing, width, height = ctx.text_extents(
char)[:4]
fx = IMG_PIXELS / 2
fy = IMG_PIXELS / 2
fx = fx - width / 2 - x_bearing
fy = fy - height / 2 - y_bearing
ctx.move_to(fx, fy)
ctx.show_text(char)
train_dict[char].append(scaled_from_rawdata(
surface.get_data()))
#if DEBUG:
# surface.write_to_png("images/" + str(ord(char)) + ".png")
self.thread = Thread(target=self.__on_train, args=(train_dict, ))
self.thread.setDaemon(True)
self.thread.start()
gobject.timeout_add(500, self.__update_percentage)
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))
def prepare(self):
fo = cairo.FontOptions()
fo.set_antialias(cairo.Antialias.NONE)
fo.set_hint_style(cairo.HintStyle.FULL)
fo.set_hint_metrics(cairo.HintMetrics.ON)
self.matrix.ctx.set_font_options(fo)
self.matrix.ctx.select_font_face(
"VCR OSD Mono", cairo.FontSlant.NORMAL, cairo.FontWeight.NORMAL
)
self.matrix.ctx.set_font_size(21)
self._text_extents = self.matrix.ctx.text_extents("99:99")
def draw(self, cr):
try:
layout = self.layout
except AttributeError:
layout = cr.create_layout()
# set font options
# see http://lists.freedesktop.org/archives/cairo/2007-February/009688.html
context = layout.get_context()
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_DEFAULT)
fo.set_hint_style(cairo.HINT_STYLE_NONE)
fo.set_hint_metrics(cairo.HINT_METRICS_OFF)
pangocairo.context_set_font_options(context, fo)
# set font
font = pango.FontDescription()
font.set_family(self.pen.fontname)
font.set_absolute_size(self.pen.fontsize * pango.SCALE)
layout.set_font_description(font)
# set text
layout.set_text(self.t)
# cache it
self.layout = layout
else:
cr.update_layout(layout)
width, height = layout.get_size()
width = float(width) / pango.SCALE
height = float(height) / pango.SCALE
cr.move_to(self.x - self.w / 2, self.y)
if self.j == self.LEFT:
x = self.x
elif self.j == self.CENTER:
x = self.x - 0.5 * width
elif self.j == self.RIGHT:
x = self.x - width
else:
assert 0
y = self.y - height
cr.move_to(x, y)
cr.set_source_rgba(*self.pen.color)
cr.show_layout(layout)
def render_barcode_to_cairo_context(self,
context,
ax,
ay,
aw,
ah,
barcode=None):
if not barcode:
barcode = self.barcode
context.save()
context.identity_matrix()
font_options = cairo.FontOptions()
font_options.set_hint_style(cairo.HINT_STYLE_NONE)
font_options.set_hint_metrics(cairo.HINT_METRICS_OFF)
context.reset_clip()
context.set_font_options(font_options)
context.rectangle(ax, ay, aw, ah)
context.clip()
if self.color_margin:
self.render_rectangle_to_cairo_context(context, ax, ay, aw, ah,
self.color_margin)
ax += self.margin_left
ay += self.margin_top
aw -= (self.margin_right + self.margin_left)
ah -= (self.margin_bottom + self.margin_top)
context.reset_clip()
context.rectangle(ax, ay, aw, ah)
context.clip()
if self.color_bg:
self.render_rectangle_to_cairo_context(context, ax, ay, aw, ah,
self.color_bg)
for index, (bx, by, bw, bh,
value) in enumerate(barcode.get_bar_geometries()):
if self.text_top:
by = 1.0 - bh
rx, ry, rw, rh = ax + bx * aw, ay + by * ah, bw * aw, bh * ah
if value and self.color_on:
self.render_rectangle_to_cairo_context(context, rx, ry, rw, rh,
self.color_on)
elif not value and self.color_off:
self.render_rectangle_to_cairo_context(context, rx, ry, rw, rh,
self.color_off)
for index, (bx, by, bw, bh,
text) in enumerate(barcode.get_unicode_geometries()):
if self.text_top:
by = 0.0
rx, ry, rw, rh = ax + bx * aw, ay + by * ah, bw * aw, bh * ah
self.render_text_to_cairo_context(context, rx, ry, rw, rh, text,
self.color_text)
context.restore()
def paint_txt(ctx, txt, box):
font_option = cairo.FontOptions()
font_option.set_antialias(cairo.Antialias.SUBPIXEL)
ctx.set_source_rgb(0, 0, 0)
ctx.set_font_options(font_option)
ctx.select_font_face("Purisa", cairo.FONT_SLANT_ITALIC, cairo.FONT_WEIGHT_BOLD)
ctx.set_font_size(60)
# ctx.set_operator(cairo.OPERATOR_ADD)
x = box[0]; y = box[1] + 50
w = box[2] - box[0] + 1
h = box[3] - box[1] + 1
ctx.move_to(x, y)
ctx.show_text(txt)
def draw_png(filename):
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, 512, 256)
c = cairo.Context(surface)
c.select_font_face("Courier New")
c.set_font_size(28)
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_DEFAULT)
c.set_font_options(fo)
c.move_to(50, 50)
c.show_text("Antialias Default")
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
c.set_font_options(fo)
c.move_to(50, 100)
c.show_text("Antialias None")
#
c.set_antialias(cairo.ANTIALIAS_DEFAULT)
c.arc(170, 170, 50, 0, 2 * math.pi)
c.set_source_rgba(1, 0, 0, 1)
c.fill()
c.set_antialias(cairo.ANTIALIAS_NONE)
c.arc(370, 170, 50, 0, 2 * math.pi)
c.set_source_rgba(1, 0, 0, 1)
c.fill()
surface.write_to_png(filename)
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 __init__(self, filelist):
gobject.GObject.__init__(self)
self._filelist = filelist
self._filedict = {}
self._pagemap = {}
self._bookheight = 0
self._count = 0
self._pagecount = 0
self._screen = gtk.gdk.screen_get_default()
self._old_fontoptions = self._screen.get_font_options()
options = cairo.FontOptions()
options.set_hint_style(cairo.HINT_STYLE_MEDIUM)
options.set_antialias(cairo.ANTIALIAS_GRAY)
options.set_subpixel_order(cairo.SUBPIXEL_ORDER_DEFAULT)
options.set_hint_metrics(cairo.HINT_METRICS_DEFAULT)
self._screen.set_font_options(options)
self._temp_win = gtk.Window()
self._temp_view = widgets._WebView()
settings = self._temp_view.get_settings()
settings.props.default_font_family = 'DejaVu LGC Serif'
settings.props.sans_serif_font_family = 'DejaVu LGC Sans'
settings.props.serif_font_family = 'DejaVu LGC Serif'
settings.props.monospace_font_family = 'DejaVu LGC Sans Mono'
settings.props.enforce_96_dpi = True
#FIXME: This does not seem to work
#settings.props.auto_shrink_images = False
settings.props.enable_plugins = False
settings.props.default_font_size = 12
settings.props.default_monospace_font_size = 10
settings.props.default_encoding = 'utf-8'
sw = gtk.ScrolledWindow()
sw.set_policy(gtk.POLICY_NEVER, gtk.POLICY_NEVER)
self._dpi = 96
sw.set_size_request(_mm_to_pixel(PAGE_WIDTH, self._dpi),
_mm_to_pixel(PAGE_HEIGHT, self._dpi))
sw.add(self._temp_view)
self._temp_win.add(sw)
self._temp_view.connect('load-finished', self._page_load_finished_cb)
self._temp_win.show_all()
self._temp_win.unmap()
self._temp_view.open(self._filelist[self._count])
def create_layout (self, text, markup=True): cr = self.cr layout = cr.create_layout () font_options = cairo.FontOptions () font_options.set_hint_metrics (cairo.HINT_METRICS_OFF) pangocairo.context_set_font_options (layout.get_context (), font_options) if markup: layout.set_markup (text) else: layout.set_text (text) return layout
def get_cairo_font_options(self, key="font-hinting", default="normal"):
"""Returns a FontOptions with the right hinting set"""
import cairo
options = cairo.FontOptions()
hinting = self.get(key, default).lower()
options.set_hint_style({
"none": cairo.HINT_STYLE_NONE,
"slight": cairo.HINT_STYLE_SLIGHT,
"light": cairo.HINT_STYLE_SLIGHT,
"medium": cairo.HINT_STYLE_MEDIUM,
"full": cairo.HINT_STYLE_FULL,
"normal": cairo.HINT_STYLE_DEFAULT,
"default": cairo.HINT_STYLE_DEFAULT,
}[hinting])
return options
def __init__(self, context, width, height):
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
context.set_font_options(fo)
context.select_font_face("Sans", cairo.FONT_SLANT_NORMAL,
cairo.FONT_WEIGHT_NORMAL)
context.set_font_size(10)
self.context = context
self.width = width
self.height = height
self.text = []
self._lines = 5
self._line_height = self.height / self._lines
self._sliding = False
self._slide_frame = 0
def Render(self, pos, size):
self.ClearTexture(self.pixelbuffer)
self.EnableBlending(True)
self.BlendingFunction(OBS.GS_BLEND_ONE, OBS.GS_BLEND_INVSRCALPHA, 1.0)
surface = cairo.ImageSurface.create_for_data(self.pixelbuffer,
cairo.FORMAT_ARGB32,
self.width, self.height)
ctx = cairo.Context(surface)
ctx.set_source_rgb(0, 1, 0)
#ctx.select_font_face("Digital-7 Mono", cairo.FONT_SLANT_NORMAL,cairo.FONT_WEIGHT_NORMAL)
font = cairo.FontOptions()
current_time = datetime.now()
stringtime = current_time.strftime(
'%d %b %H:%M:%S:%f')[:-3] + " UTC" + datetime.now(
timezone.utc).astimezone().strftime('%z')
print("size.x " + str(size.x))
print("size.x " + str(size.y))
#fit text to box
for x in reversed(range(self.height)):
#font size
ctx.set_font_size(x)
#rendered size
(tx, ty, width, height, dx, dy) = ctx.text_extents(stringtime)
if (height < self.height and width < self.width):
ctx.set_font_size(x)
break
(x, y, width, height, dx, dy) = ctx.text_extents(stringtime)
#position text
ctx.move_to(self.width / 2 - width / 2, self.height / 2 + height / 2)
#draw
ctx.show_text(stringtime)
surface.finish()
self.DrawSprite(0xffffffff, pos.x, pos.y)
self.BlendingFunction(OBS.GS_BLEND_SRCALPHA, OBS.GS_BLEND_INVSRCALPHA,
1.0)
def np_text(text, fontname='sans', fontsize=48, angle=0):
''' Generate an text within an array
:Parameters:
`text` : str
Text to be generated
`fontname` : str
Font family name
`fontsize` : int
Font size
`angle` : float
Text angle
'''
# Dummy surface to get text extents
surface = cairo.ImageSurface(cairo.FORMAT_A8, 1, 1)
ctx = cairo.Context(surface)
ctx.select_font_face(fontname)
ctx.set_font_size(fontsize)
(x, y, w, h, dx, dy) = ctx.text_extents(text)
size = (int(np.sqrt(w**2+h**2)+1)//4)*4+4
# Actual surface
surface = cairo.ImageSurface(cairo.FORMAT_A8, size, size)
ctx = cairo.Context(surface)
options = cairo.FontOptions()
options.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
options.set_hint_style(cairo.HINT_STYLE_FULL)
ctx.set_font_options(options)
ctx.set_source_rgba(0,0,0,0)
ctx.paint()
ctx.set_source_rgba(1,1,1,1)
ctx.select_font_face(fontname)
ctx.set_font_size(fontsize)
ctx.move_to(size//2,size//2)
ctx.rotate(angle)
ctx.rel_move_to(-w//2,h//2)
ctx.show_text(text)
# Make an array oput of surface
buf = surface.get_data()
Z = np.frombuffer(buf, np.uint8)
Z.shape = (size,size,1)
return np_crop(Z,0)
def get_size(text, font_name, font_size):
width, height = 1, 1
surface = cairo.ImageSurface(cairo.FORMAT_RGB24, width, height)
cr = cairo.Context(surface)
cr.scale(1, 1)
fo = cairo.FontOptions()
fo.set_antialias(cairo.ANTIALIAS_NONE)
utf8 = text
cr.select_font_face(font_name, cairo.FONT_SLANT_NORMAL,
cairo.FONT_WEIGHT_NORMAL)
cr.set_font_options(fo)
cr.set_font_size(font_size)
#print(cr.text_extents(utf8))
return cr.text_extents(utf8)[2:4]
def _prepare_line_context(self, line_surf, x, y, width, height):
line_context = cairo.Context(line_surf)
f_o = cairo.FontOptions()
f_o.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
f_o.set_hint_style(cairo.HINT_STYLE_SLIGHT)
f_o.set_hint_metrics(cairo.HINT_METRICS_ON)
line_context.set_font_options(f_o)
r, g, b, a = self._get_color(self.session.cfg.default_background_color)
line_context.set_source_rgba(r, g, b, a)
line_context.rectangle(0, 0, width, height)
line_context.fill()
line_p_context = pangocairo.CairoContext(line_context)
if sys.platform.startswith('win'):
line_p_context.set_antialias(cairo.ANTIALIAS_DEFAULT)
else:
line_p_context.set_antialias(cairo.ANTIALIAS_SUBPIXEL)
return (line_context, line_p_context)
def _cast_inline(self, LINE, runinfo, F, FSTYLE):
C = cast_mono_line(LINE, self.char, runinfo, F + self['mathvariant'])
C['x'] = 0
C['y'] = FSTYLE['shift']
self._cad = C['advance']
ink = cairo.ScaledFont(
C['fstyle']['font'],
cairo.Matrix(yy=C['fstyle']['fontsize'],
xx=C['fstyle']['fontsize']), cairo.Matrix(),
cairo.FontOptions())
self._rise = -ink.text_extents(self.char[-1])[1]
self._icorrection = self._rise * self[
'correct'] * 0.17632698070846498 # tan(10°)
charwidth = self._cad + self._icorrection
return [
C
], charwidth, C['ascent'], C['descent'], None, (self._draw_annot, 0, 0)