A39模拟器

MXC-A39/lvgl/examples/widgets/switch/index.rst

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+C
+^
+
+Simple Switch 
+"""""""""""""""""""""""
+
+.. lv_example:: widgets/switch/lv_example_switch_1
+  :language: c
+
+MicroPython
+^^^^^^^^^^^
+
+No examples yet.

MXC-A39/lvgl/examples/widgets/switch/lv_example_switch_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_SWITCH && LV_BUILD_EXAMPLES
+
+static void event_handler(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t * obj = lv_event_get_target(e);
+    if(code == LV_EVENT_VALUE_CHANGED) {
+        LV_LOG_USER("State: %s\n", lv_obj_has_state(obj, LV_STATE_CHECKED) ? "On" : "Off");
+    }
+}
+
+void lv_example_switch_1(void)
+{
+    lv_obj_set_flex_flow(lv_scr_act(), LV_FLEX_FLOW_COLUMN);
+    lv_obj_set_flex_align(lv_scr_act(), LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER, LV_FLEX_ALIGN_CENTER);
+
+    lv_obj_t * sw;
+
+    sw = lv_switch_create(lv_scr_act());
+    lv_obj_add_event_cb(sw, event_handler, LV_EVENT_ALL, NULL);
+
+    sw = lv_switch_create(lv_scr_act());
+    lv_obj_add_state(sw, LV_STATE_CHECKED);
+    lv_obj_add_event_cb(sw, event_handler, LV_EVENT_ALL, NULL);
+
+    sw = lv_switch_create(lv_scr_act());
+    lv_obj_add_state(sw, LV_STATE_DISABLED);
+    lv_obj_add_event_cb(sw, event_handler, LV_EVENT_ALL, NULL);
+
+    sw = lv_switch_create(lv_scr_act());
+    lv_obj_add_state(sw, LV_STATE_CHECKED | LV_STATE_DISABLED);
+    lv_obj_add_event_cb(sw, event_handler, LV_EVENT_ALL, NULL);
+}
+
+#endif

MXC-A39/lvgl/examples/widgets/switch/lv_example_switch_1.py

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+def event_handler(obj, event):
+    if event == lv.EVENT.VALUE_CHANGED:
+        print("State: %s" % ("On" if obj.get_state() else "Off"))
+
+# Create styles for the switch
+bg_style = lv.style_t()
+indic_style = lv.style_t()
+knob_on_style = lv.style_t()
+knob_off_style = lv.style_t()
+
+lv.style_copy(bg_style, lv.style_pretty)
+bg_style.body.radius = 800
+bg_style.body.padding.top = 6
+bg_style.body.padding.bottom = 6
+
+lv.style_copy(indic_style, lv.style_pretty_color)
+indic_style.body.radius = 800
+indic_style.body.main_color = lv.color_hex(0x9fc8ef)
+indic_style.body.grad_color = lv.color_hex(0x9fc8ef)
+indic_style.body.padding.left = 0
+indic_style.body.padding.right = 0
+indic_style.body.padding.top = 0
+indic_style.body.padding.bottom = 0
+
+lv.style_copy(knob_off_style, lv.style_pretty)
+knob_off_style.body.radius = 800
+knob_off_style.body.shadow.width = 4
+knob_off_style.body.shadow.type = lv.SHADOW.BOTTOM
+
+lv.style_copy(knob_on_style, lv.style_pretty_color)
+knob_on_style.body.radius = 800
+knob_on_style.body.shadow.width = 4
+knob_on_style.body.shadow.type = lv.SHADOW.BOTTOM
+
+# Create a switch and apply the styles
+sw1 = lv.sw(lv.scr_act())
+sw1.set_style(lv.sw.STYLE.BG, bg_style)
+sw1.set_style(lv.sw.STYLE.INDIC, indic_style)
+sw1.set_style(lv.sw.STYLE.KNOB_ON, knob_on_style)
+sw1.set_style(lv.sw.STYLE.KNOB_OFF, knob_off_style)
+sw1.align(None, lv.ALIGN.CENTER, 0, -50)
+sw1.set_event_cb(event_handler)
+
+# Copy the first switch and turn it ON
+sw2 = lv.sw(lv.scr_act(), sw1)
+sw2.on(lv.ANIM.ON)
+sw2.align(None, lv.ALIGN.CENTER, 0, 50)
+sw2.set_event_cb(lambda o,e: None)