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[lvgl] Implement qrcode (#7623)
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3 changed files with 68 additions and 0 deletions
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@ -71,6 +71,7 @@ from .widgets.meter import meter_spec
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from .widgets.msgbox import MSGBOX_SCHEMA, msgboxes_to_code
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from .widgets.obj import obj_spec
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from .widgets.page import add_pages, generate_page_triggers, page_spec
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from .widgets.qrcode import qr_code_spec
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from .widgets.roller import roller_spec
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from .widgets.slider import slider_spec
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from .widgets.spinbox import spinbox_spec
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@ -109,6 +110,7 @@ for w_type in (
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spinbox_spec,
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keyboard_spec,
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tileview_spec,
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qr_code_spec,
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):
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WIDGET_TYPES[w_type.name] = w_type
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54
esphome/components/lvgl/widgets/qrcode.py
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54
esphome/components/lvgl/widgets/qrcode.py
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@ -0,0 +1,54 @@
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import esphome.codegen as cg
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import esphome.config_validation as cv
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from esphome.const import CONF_SIZE, CONF_TEXT
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from esphome.cpp_generator import MockObjClass
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from ..defines import CONF_MAIN, literal
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from ..lv_validation import color, color_retmapper, lv_text
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from ..lvcode import LocalVariable, lv, lv_expr
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from ..schemas import TEXT_SCHEMA
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from ..types import WidgetType, lv_obj_t
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from . import Widget
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CONF_QRCODE = "qrcode"
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CONF_DARK_COLOR = "dark_color"
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CONF_LIGHT_COLOR = "light_color"
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QRCODE_SCHEMA = TEXT_SCHEMA.extend(
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{
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cv.Optional(CONF_DARK_COLOR, default="black"): color,
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cv.Optional(CONF_LIGHT_COLOR, default="white"): color,
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cv.Required(CONF_SIZE): cv.int_,
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}
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)
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class QrCodeType(WidgetType):
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def __init__(self):
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super().__init__(
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CONF_QRCODE,
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lv_obj_t,
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(CONF_MAIN,),
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QRCODE_SCHEMA,
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modify_schema=TEXT_SCHEMA,
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)
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def get_uses(self):
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return ("canvas", "img")
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def obj_creator(self, parent: MockObjClass, config: dict):
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dark_color = color_retmapper(config[CONF_DARK_COLOR])
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light_color = color_retmapper(config[CONF_LIGHT_COLOR])
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size = config[CONF_SIZE]
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return lv_expr.call("qrcode_create", parent, size, dark_color, light_color)
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async def to_code(self, w: Widget, config):
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if (value := config.get(CONF_TEXT)) is not None:
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value = await lv_text.process(value)
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with LocalVariable(
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"qr_text", cg.const_char_ptr, value, modifier=""
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) as str_obj:
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lv.qrcode_update(w.obj, str_obj, literal(f"strlen({str_obj})"))
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qr_code_spec = QrCodeType()
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@ -458,6 +458,18 @@ lvgl:
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- id: page2
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widgets:
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- qrcode:
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id: lv_qr
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align: left_mid
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size: 100
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light_color: whitesmoke
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dark_color: steelblue
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text: esphome.io
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on_click:
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lvgl.qrcode.update:
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id: lv_qr
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text: homeassistant.io
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- slider:
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min_value: 0
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max_value: 255
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