import os
from libqtile import bar
from libqtile.command.base import expose_command
from libqtile.images import Img
from libqtile.log_utils import logger
from libqtile.widget import base
[docs]
class Image(base._Widget, base.MarginMixin):
"""Display a PNG image on the bar"""
orientations = base.ORIENTATION_BOTH
defaults = [
("scale", True, "Enable/Disable image scaling"),
("rotate", 0.0, "rotate the image in degrees counter-clockwise"),
("filename", None, "Image filename. Can contain '~'"),
("margin", 0, "Margin inside the box. Defaults to 0."),
]
def __init__(self, length=bar.CALCULATED, **config):
base._Widget.__init__(self, length, **config)
self.add_defaults(Image.defaults)
def _configure(self, qtile, bar):
base._Widget._configure(self, qtile, bar)
self._update_image()
def _update_image(self):
self.img = None
if not self.filename:
logger.warning("Image filename not set!")
return
self.filename = os.path.expanduser(self.filename)
if not os.path.exists(self.filename):
logger.warning("Image does not exist: %s", self.filename)
return
img = Img.from_path(self.filename)
self.img = img
img.theta = self.rotate
if not self.scale:
return
new_height = self.bar.size - (self.margin_top * 2)
img.resize(height=new_height)
def draw(self):
if self.img is None:
return
self.drawer.clear(self.background or self.bar.background)
self.drawer.ctx.save()
self.drawer.ctx.translate(self.margin_x, self.margin_y)
self.drawer.ctx.set_source(self.img.pattern)
self.drawer.ctx.paint()
self.drawer.ctx.restore()
self.draw_at_default_position()
def calculate_length(self):
if self.img is None:
return 0
img_length = self.img.width if self.bar.horizontal else self.img.height
return img_length + (self.margin_side * 2)
[docs]
@expose_command()
def update(self, filename):
old_length = self.calculate_length()
self.filename = filename
self._update_image()
if self.calculate_length() == old_length:
self.draw()
else:
self.bar.draw()