From d6472492eb180fda9b6d65b5d45050c8bcb5b53f Mon Sep 17 00:00:00 2001
From: lixianjing <xianjimli@hotmail.com>
Date: Mon, 1 Jul 2019 09:08:19 +0800
Subject: [PATCH] improve edit

---
 src/base/text_edit.c | 5 +++++
 src/widgets/edit.c   | 5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/base/text_edit.c b/src/base/text_edit.c
index 0d687a224..8eecb174d 100644
--- a/src/base/text_edit.c
+++ b/src/base/text_edit.c
@@ -35,6 +35,11 @@
 #define STB_TEXTEDIT_NEWLINE (wchar_t)('\n')
 #define STB_TEXTEDIT_STRING text_edit_t
 
+#if !defined(WITH_SDL)
+#define STB_TEXTEDIT_UNDOSTATECOUNT 10
+#define STB_TEXTEDIT_UNDOCHARCOUNT 32
+#endif /*WITH_SDL*/
+
 #include "stb/stb_textedit.h"
 
 typedef struct _text_layout_info_t {
diff --git a/src/widgets/edit.c b/src/widgets/edit.c
index dfba88d7f..79a0b8f40 100644
--- a/src/widgets/edit.c
+++ b/src/widgets/edit.c
@@ -424,7 +424,10 @@ static ret_t edit_on_key_down(widget_t* widget, key_event_t* e) {
     } else {
       text_edit_key_down(edit->model, (key_event_t*)e);
     }
-    edit_dispatch_event(widget, EVT_VALUE_CHANGING);
+
+    if (key != TK_KEY_LEFT && key != TK_KEY_RIGHT && key != TK_KEY_HOME && key != TK_KEY_END) {
+      edit_dispatch_event(widget, EVT_VALUE_CHANGING);
+    }
   } else if (system_info()->app_type != APP_DESKTOP && key < 128 && isprint(key)) {
     edit_input_char(widget, (wchar_t)key);
   }