LVGL 库提交

2026-08-30 08:57:07 +08:00
parent 26c9098630
commit e2f199c6bf
1056 changed files with 556743 additions and 45 deletions
@@ -0,0 +1,83 @@
+/**
+ * @file lv_bidi.h
+ *
+ */
+
+#ifndef LV_BIDI_H
+#define LV_BIDI_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "../lv_conf_internal.h"
+#include "lv_types.h"
+#include "lv_text.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+/** Special non printable strong characters.
+ * They can be inserted to texts to affect the run's direction */
+#define LV_BIDI_LRO  "\xE2\x80\xAD" /*U+202D*/
+#define LV_BIDI_RLO  "\xE2\x80\xAE" /*U+202E*/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+typedef enum {
+    LV_BASE_DIR_LTR      = 0x00,
+    LV_BASE_DIR_RTL      = 0x01,
+    LV_BASE_DIR_AUTO     = 0x02,
+
+    LV_BASE_DIR_NEUTRAL  = 0x20,
+    LV_BASE_DIR_WEAK     = 0x21,
+} lv_base_dir_t;
+
+/**********************
+ * GLOBAL PROTOTYPES
+ **********************/
+#if LV_USE_BIDI
+
+/**
+ * Get the real text alignment from the a text alignment, base direction and a text.
+ * @param align     LV_TEXT_ALIGN_..., write back the calculated align here (LV_TEXT_ALIGN_LEFT/RIGHT/CENTER)
+ * @param base_dir  LV_BASE_DIR_..., write the calculated base dir here (LV_BASE_DIR_LTR/RTL)
+ * @param txt       a text, used with LV_BASE_DIR_AUTO to determine the base direction
+ */
+void lv_bidi_calculate_align(lv_text_align_t * align, lv_base_dir_t * base_dir, const char * txt);
+
+/**
+ * Set custom neutrals string
+ * @param neutrals  default " \t\n\r.,:;'\"`!?%/\\-=()[]{}<>@#&$|"
+ */
+void lv_bidi_set_custom_neutrals_static(const char * neutrals);
+
+/**********************
+ *      MACROS
+ **********************/
+
+#else /*LV_USE_BIDI*/
+/**
+ * For compatibility if LV_USE_BIDI = 0
+ * Get the real text alignment from the a text alignment, base direction and a text.
+ * @param align     For LV_TEXT_ALIGN_AUTO give LV_TEXT_ALIGN_LEFT else leave unchanged, write back the calculated align here
+ * @param base_dir  Unused
+ * @param txt       Unused
+ */
+static inline void lv_bidi_calculate_align(lv_text_align_t * align, lv_base_dir_t * base_dir, const char * txt)
+{
+    LV_UNUSED(txt);
+    LV_UNUSED(base_dir);
+    if(*align == LV_TEXT_ALIGN_AUTO) * align = LV_TEXT_ALIGN_LEFT;
+}
+#endif /*LV_USE_BIDI*/
+
+#ifdef __cplusplus
+} /*extern "C"*/
+#endif
+
+#endif /*LV_BIDI_H*/