def svg(self, filename, x=0, y=0, width=None, height=None):
try:
handle = self.svg_handles[filename]
except KeyError:
handle = self.svg_handles[filename] = rsvg_handle_new_from_file(filename)
cairo_save(self.cr)
cairo_translate(self.cr, x, y)
if width is not None or height is not None:
dim = RsvgDimensionData()
rsvg_handle_get_dimensions(handle, byref(dim))
if width is not None:
scale_x = float(width) / dim.width
else:
scale_x = 1.0
if height is not None:
scale_y = float(height) / dim.height
else:
scale_y = 1.0
cairo_scale(self.cr, scale_x, scale_y)
rsvg_handle_render_cairo(handle, self.cr)
cairo_restore(self.cr)
def __init__(self, screen, width, height, drawable):
self.connection = screen.connection
self.screen = screen
self.width = width
self.height = height
self.drawable = drawable
self.visual = screen.root_visual_type
self.surface = cairo.cairo_xcb_surface_create(
byref(self.connection._connection), drawable._xid,
byref(self.visual._visualtype),
width, height
)
self.cr = cairo.cairo_create(self.surface)
cairo.cairo_set_operator(self.cr, cairo.CAIRO_OPERATOR_SOURCE)
cairo.cairo_set_source_surface(self.cr, self.surface, 0, 0)
cairo.cairo_set_source_rgba(self.cr, 255, 0, 0, 0)
self.default_font = "snap"
self.default_font_size = 10
log.debug('created drawcontext %s' % self)
def hex2xlibcolor(screen, color):
# "CIEXYZ:0.3227/0.28133/0.2493"
# "RGBi:1.0/0.0/0.0"
# "rgb:00/ff/00"
# "CIELuv:50.0/0.0/0.0"
color = "rgb:%s/%s/%s" % (color[:2], color[2:4], color[4:6])
ecolor = xlib.XColor()
if not xlib.XParseColor(samuraix.display, screen.default_colormap, color, byref(ecolor)):
raise ValueError("cant parse color %s" % color)
if not xlib.XAllocColor(samuraix.display, screen.default_colormap, byref(ecolor)):
raise "Cant alloc color"
# DYNAMIC = 1
# if (ecolor.pixel != screen.black_pixel and
# ecolor.pixel != screen.white_pixel and
# screen.default_visual.class & DYNAMIC):
return ecolor.pixel
def text(self, x, y, string, color=(0.0, 0.0, 0.0),
font=None, bold=False, align=None, font_size=None):
cairo.cairo_set_source_rgb(self.cr, color[0], color[1], color[2])
if font is None:
font = self.default_font
if font_size is None:
font_size = self.default_font_size
if bold:
weight = cairo.CAIRO_FONT_WEIGHT_BOLD
else:
weight = cairo.CAIRO_FONT_WEIGHT_NORMAL
cairo.cairo_select_font_face(self.cr, font, cairo.CAIRO_FONT_SLANT_NORMAL,
weight)
cairo.cairo_set_font_size(self.cr, font_size)
if align and align != 'left':
#typedef struct {
# double x_bearing;
# double y_bearing;
# double width;
# double height;
# double x_advance;
# double y_advance;
#} cairo.cairo_text_extents_t;
extents = cairo.cairo_text_extents_t()
cairo.cairo_text_extents(self.cr, string, byref(extents))
if align == "right":
x -= extents.x_advance
cairo.cairo_move_to(self.cr, x, y)
cairo.cairo_show_text(self.cr, string)
self.connection.flush()
