chart_width = display.width - 50
chart_height = display.height - 50
font = terminalio.FONT
line_color = 0xFFFFFF
# Setup the first bitmap and sparkline
# This sparkline has no background bitmap
# mySparkline1 uses a vertical y range between 0 to 10 and will contain a
# maximum of 40 items
sparkline1 = Sparkline(
width=chart_width,
height=chart_height,
max_items=40,
y_min=0,
y_max=10,
x=40,
y=30,
color=line_color,
)
# Label the y-axis range
text_xoffset = -10
text_label1a = label.Label(font=font,
text=str(sparkline1.y_top),
color=line_color) # yTop label
text_label1a.anchor_point = (1, 0.5) # set the anchorpoint at right-center
text_label1a.anchored_position = (
sparkline1.x + text_xoffset,
sparkline1.y,
##########################################
# Baseline size of the sparkline chart, in pixels.
chart_width = 50
chart_height = 50
font = terminalio.FONT
# Setup the first bitmap and sparkline
# This sparkline has no background bitmap
# sparkline1 uses a vertical y range between -1 to +1.25 and will contain a maximum of 40 items
sparkline1 = Sparkline(
width=chart_width,
height=chart_height,
max_items=40,
y_min=-1,
y_max=1.25,
x=10,
y=10,
)
# Label the y-axis range
text_label1a = label.Label(font=font,
text=str(sparkline1.y_top),
color=0xFFFFFF) # y_top label
text_label1a.anchor_point = (0, 0.5) # set the anchorpoint
text_label1a.anchored_position = (
10 + chart_width,
10,
) # set the text anchored position to the upper right of the graph
class SparkLineView(View):
def __init__(self, display, layout_json):
self.json = layout_json
if "view_type" not in layout_json:
raise MissingTypeError
if layout_json["view_type"] != "SparkLine":
raise IncorrectTypeError(
"view_type '{}' does not match Layout Class 'SparkLine'".
format(layout_json["view_type"]))
self._display = display
if "attributes" in layout_json:
_missing_attrs = []
for attribute in REQUIRED_ATTRIBUTES:
if attribute not in layout_json['attributes']:
_missing_attrs.append(attribute)
if len(_missing_attrs) > 0:
raise MissingRequiredAttributesError(
"Missing required attributes: {}".format(_missing_attrs))
_color = 0xFFFFFF
if "color" in layout_json["attributes"]:
_outline = int(layout_json["attributes"]["color"], 16)
_width = 0
if "width" in layout_json["attributes"]:
_width = self.keyword_compiler(
layout_json["attributes"]["width"])
_height = 0
if "height" in layout_json["attributes"]:
_height = self.keyword_compiler(
layout_json["attributes"]["height"])
_y_min = None
if "y_min" in layout_json["attributes"]:
_y_min = self.keyword_compiler(
layout_json["attributes"]["y_min"])
_x_min = None
if "x_min" in layout_json["attributes"]:
_x_min = self.keyword_compiler(
layout_json["attributes"]["x_min"])
_max_items = 10
if "max_items" in layout_json["attributes"]:
_max_items = self.keyword_compiler(
layout_json["attributes"]["max_items"])
_x = 0
if "x" in layout_json["attributes"]:
_x = self.keyword_compiler(layout_json["attributes"]["x"], {
"WIDTH": _width,
"HEIGHT": _height
})
_y = 0
if "y" in layout_json["attributes"]:
_y = self.keyword_compiler(layout_json["attributes"]["y"], {
"WIDTH": _width,
"HEIGHT": _height
})
_points = None
if "points" in layout_json["attributes"]:
_points = layout_json["attributes"]["points"]
self.sparkline = Sparkline(_width,
_height,
_max_items,
y_min=_y_min,
y_max=_x_min,
x=_x,
y=_y,
color=_color)
if _points != None:
for _point in _points:
self.sparkline.add_value(_point)
self.view = self.sparkline
else:
raise MissingAttributesError()