A39模拟器

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

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+C
+^
+
+Keyboard with text area 
+"""""""""""""""""""""""
+
+.. lv_example:: _widgets/keyboard/lv_example_keyboard_1
+  :language: c
+
+MicroPython
+^^^^^^^^^^^
+
+Keyboard with text area
+"""""""""""""""""""""""
+
+No examples yet.

MXC-A39/lvgl/examples/widgets/keyboard/lv_example_keyboard_1.c

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+#include "../../lv_examples.h"
+#if LV_USE_KEYBOARD && LV_BUILD_EXAMPLES
+
+static void ta_event_cb(lv_event_t * e)
+{
+    lv_event_code_t code = lv_event_get_code(e);
+    lv_obj_t * ta = lv_event_get_target(e);
+    lv_obj_t * kb = lv_event_get_user_data(e);
+    if(code == LV_EVENT_FOCUSED) {
+        lv_keyboard_set_textarea(kb, ta);
+        lv_obj_clear_flag(kb, LV_OBJ_FLAG_HIDDEN);
+    }
+
+    if(code == LV_EVENT_DEFOCUSED) {
+        lv_keyboard_set_textarea(kb, NULL);
+        lv_obj_add_flag(kb, LV_OBJ_FLAG_HIDDEN);
+    }
+}
+
+void lv_example_keyboard_1(void)
+{
+    /*Create a keyboard to use it with an of the text areas*/
+    lv_obj_t *kb = lv_keyboard_create(lv_scr_act());
+
+    /*Create a text area. The keyboard will write here*/
+    lv_obj_t * ta;
+    ta = lv_textarea_create(lv_scr_act());
+    lv_obj_align(ta, LV_ALIGN_TOP_LEFT, 10, 10);
+    lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_ALL, kb);
+    lv_textarea_set_placeholder_text(ta, "Hello");
+    lv_obj_set_size(ta, 140, 80);
+
+    ta = lv_textarea_create(lv_scr_act());
+    lv_obj_align(ta, LV_ALIGN_TOP_RIGHT, -10, 10);
+    lv_obj_add_event_cb(ta, ta_event_cb, LV_EVENT_ALL, kb);
+    lv_obj_set_size(ta, 140, 80);
+
+    lv_keyboard_set_textarea(kb, ta);
+}
+#endif

MXC-A39/lvgl/examples/widgets/keyboard/lv_example_keyboard_1.py

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+# Create styles for the keyboard
+rel_style = lv.style_t()
+pr_style  = lv.style_t()
+
+lv.style_copy(rel_style, lv.style_btn_rel)
+rel_style.body.radius = 0
+rel_style.body.border.width = 1
+
+lv.style_copy(pr_style, lv.style_btn_pr)
+pr_style.body.radius = 0
+pr_style.body.border.width = 1
+
+# Create a keyboard and apply the styles
+kb = lv.kb(lv.scr_act())
+kb.set_cursor_manage(True)
+kb.set_style(lv.kb.STYLE.BG, lv.style_transp_tight)
+kb.set_style(lv.kb.STYLE.BTN_REL, rel_style)
+kb.set_style(lv.kb.STYLE.BTN_PR, pr_style)
+
+# Create a text area. The keyboard will write here
+ta = lv.ta(lv.scr_act())
+ta.align(None, lv.ALIGN.IN_TOP_MID, 0, 10)
+ta.set_text("")
+
+# Assign the text area to the keyboard
+kb.set_ta(ta)