[lvgl] PR stage 3 (#7160)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>
2026-06-01 02:28:28 +02:00 · 2024-07-31 14:31:15 +10:00
parent 8849443bf6
commit 3920029aff
18 changed files with 895 additions and 98 deletions
@@ -0,0 +1,61 @@
+from esphome import automation
+import esphome.codegen as cg
+from esphome.const import CONF_ID, CONF_ON_VALUE, CONF_TRIGGER_ID
+
+from .defines import (
+    CONF_ALIGN,
+    CONF_ALIGN_TO,
+    CONF_X,
+    CONF_Y,
+    LV_EVENT,
+    LV_EVENT_TRIGGERS,
+    literal,
+)
+from .lvcode import LambdaContext, add_line_marks, lv, lv_add
+from .widget import widget_map
+
+lv_event_t_ptr = cg.global_ns.namespace("lv_event_t").operator("ptr")
+
+
+async def generate_triggers(lv_component):
+    """
+    Generate LVGL triggers for all defined widgets
+    Must be done after all widgets completed
+    :param lv_component:  The parent component
+    :return:
+    """
+
+    for w in widget_map.values():
+        if w.config:
+            for event, conf in {
+                event: conf
+                for event, conf in w.config.items()
+                if event in LV_EVENT_TRIGGERS
+            }.items():
+                conf = conf[0]
+                w.add_flag("LV_OBJ_FLAG_CLICKABLE")
+                event = "LV_EVENT_" + LV_EVENT[event[3:].upper()]
+                await add_trigger(conf, event, lv_component, w)
+            for conf in w.config.get(CONF_ON_VALUE, ()):
+                await add_trigger(conf, "LV_EVENT_VALUE_CHANGED", lv_component, w)
+
+            # Generate align to directives while we're here
+            if align_to := w.config.get(CONF_ALIGN_TO):
+                target = widget_map[align_to[CONF_ID]].obj
+                align = align_to[CONF_ALIGN]
+                x = align_to[CONF_X]
+                y = align_to[CONF_Y]
+                lv.obj_align_to(w.obj, target, align, x, y)
+
+
+async def add_trigger(conf, event, lv_component, w):
+    tid = conf[CONF_TRIGGER_ID]
+    add_line_marks(tid)
+    trigger = cg.new_Pvariable(tid)
+    args = w.get_args()
+    value = w.get_value()
+    await automation.build_automation(trigger, args, conf)
+    with LambdaContext([(lv_event_t_ptr, "event_data")]) as context:
+        add_line_marks(tid)
+        lv_add(trigger.trigger(value))
+    lv_add(lv_component.add_event_cb(w.obj, await context.get_lambda(), literal(event)))