Center indexed param/timbre labels as one block and nudge section digits.

Fixes the left-biased index+name layout, unifies index-name gap across rows, and shifts play-section numbers +2px per UI markup.

Co-authored-by: Cursor <cursoragent@cursor.com>

UI/UI_global.c

@@ -443,6 +443,58 @@ void Show_Battery_Icon(uint8_t flag)
 }
 
 
+/* 中英文混排像素宽（与 LCD_GetMixedStringWidth 规则一致：CJK=sizey，ASCII=UI0902_ASCII_W） */
+static uint16_t UI_MixedTextWidth(const uint8_t *str, uint8_t sizey)
+{
+	uint16_t width = 0;
+	uint8_t ascii_w = UI0902_ASCII_W(sizey);
+
+	if (str == NULL)
+		return 0;
+	while (*str != '\0') {
+		if (*str > 0x80) {
+			width = (uint16_t)(width + sizey);
+			str += 2;
+		} else {
+			width = (uint16_t)(width + ascii_w);
+			str += 1;
+		}
+	}
+	return width;
+}
+
+/* 曲目/音色共用：序号与名称间距（与「1.名称」拼接一致，保证两行视觉间距相同） */
+#define UI0902_INDEX_NAME_GAP  0
+
+/* 在 [x1,x2] 内整体居中绘制「N.」+ 名称（无渐变，show_Param 用） */
+static void UI_DrawIndexedName_Mixed(uint16_t x1, uint16_t x2, uint16_t text_y,
+                                     const char *num, const char *name,
+                                     uint16_t fc, uint16_t bc, uint8_t sizey)
+{
+	char line[48] = {0};
+	snprintf(line, sizeof(line), "%s%s", num, name);
+	LCD_ShowMixedString(x1, x2, text_y, (uint8_t *)line, LCD_ALIGN_CENTER,
+	                    fc, bc, sizey, 1);
+}
+
+/* 在 [x1,x2] 内整体居中绘制「N.」+ 中文名（渐变底，音色行用）；间隙与曲目行一致 */
+static void UI_DrawIndexedName_Grad(uint16_t x1, uint16_t x2, uint16_t text_y,
+                                    const char *num, const uint8_t *name,
+                                    uint16_t fc, uint16_t c_top, uint16_t c_bot, uint8_t sizey)
+{
+	uint16_t num_w = (uint16_t)(strlen(num) * UI0902_ASCII_W(sizey));
+	uint16_t name_w = UI_MixedTextWidth(name, sizey);
+	uint16_t total_w = (uint16_t)(num_w + UI0902_INDEX_NAME_GAP + name_w);
+	uint16_t area_w = (x2 > x1) ? (uint16_t)(x2 - x1) : 0;
+	uint16_t start_x = (total_w >= area_w) ? x1 : (uint16_t)(x1 + (area_w - total_w) / 2);
+	uint16_t name_x = (uint16_t)(start_x + num_w + UI0902_INDEX_NAME_GAP);
+
+	LCD_ShowString_AutoAlign_Gradient(start_x, (uint16_t)(start_x + num_w), text_y,
+			(const uint8_t *)num, LCD_ALIGN_LEFT, fc, c_top, c_bot, sizey);
+	LCD_ShowChinese_AutoAlign_Gradient(name_x, x2, text_y, name, LCD_ALIGN_LEFT,
+			fc, c_top, c_bot, sizey);
+}
+
 void show_Param(const LEBEL_UI *UI, GUI_SWITCH *Group)
 {
     char Textstr_new[40] = {0};
@@ -453,6 +505,7 @@ void show_Param(const LEBEL_UI *UI, GUI_SWITCH *Group)
     const uint16_t text_y  = row_y + (row_h - UI->Text_size) / 2 + 1;
 	uint8_t idx = Group->Current + 1;
     uint16_t c_top, c_bot;
+    uint16_t x1, x2;
 
     UI_GetFocusGrad(GUI_MODE_PARAM, &c_top, &c_bot);
 
@@ -464,18 +517,16 @@ void show_Param(const LEBEL_UI *UI, GUI_SWITCH *Group)
         c_top, c_bot
     );
 
-    // 拼接序号 1. 2. 3.
+    /* 序号+名称整体居中（约等于标注「右移7px」的视觉效果） */
     sprintf(NumBuf, "%d.", idx);
-    uint16_t num_w = (uint16_t)(strlen(NumBuf) * UI0902_ASCII_W(UI->Text_size));
     if (Group->Id == EXPRESS_MODE_PARAM && Group->Current < LOCAL_SONG_COUNT)
         strcpy(Textstr_new, LocalSongNameGbk[Group->Current]);
     else
         GET_ParamNum_Str(Group->Current, 0, Textstr_new, Group->Id);
-    uint32_t string_start_x = LCD_ShowMixedString(UI->x+10, UI->x + UI->w, text_y, (uint8_t *)Textstr_new , LCD_ALIGN_CENTER, WHITE, BLACK, UI->Text_size, 1);
+    x1 = (uint16_t)(UI->x + 10);
-     //序号X = 中文起点 - 数字宽度 - 5，间<EFBC8C>?像素
+    x2 = (uint16_t)(UI->x + UI->w - 10);
-    uint16_t num_x = string_start_x - num_w;
+    UI_DrawIndexedName_Mixed(x1, x2, text_y, NumBuf, Textstr_new,
-    // 绘制左侧数字序号
+                             WHITE, BLACK, UI->Text_size);
-    LCD_ShowString(num_x, text_y, (const uint8_t *)NumBuf, UI->Text_fc, UI->Text_bc, UI->Text_size, 1);
 }
 
 
@@ -851,22 +902,17 @@ void label_TimbreSelece_ui(const LEBEL_UI *UI, GUI_SWITCH * Group)
 			c_top, c_bot
 	     );
 	sprintf(NumBuf, "%d.", idx);
-	uint16_t num_w = (uint16_t)(strlen(NumBuf) * UI0902_ASCII_W(UI->Text_size));
 	GET_Num_Str(mGuiData[UI->Id].Current, 0, (char*)Textstr, UI->Id);
-	uint32_t chinese_start_x = LCD_ShowChinese_AutoAlign_Gradient(
+	UI_DrawIndexedName_Grad(
-    	UI->x + num_w,
+		(uint16_t)(UI->x + 10),
-    	UI->x + UI->w,
+		(uint16_t)(UI->x + UI->w - 10),
 		text_y,
-		(const uint8_t*)Textstr,
+		NumBuf,
-        UI->Text_Align,
+		Textstr,
 		UI->Text_fc,
 		c_top, c_bot,
 		UI->Text_size
 	);
-	uint16_t num_x = chinese_start_x - num_w - 5;
-	LCD_ShowString_AutoAlign_Gradient(num_x, num_x + num_w, text_y,
-			(const uint8_t *)NumBuf, LCD_ALIGN_LEFT, UI->Text_fc,
-			c_top, c_bot, UI->Text_size);
 	switch(Group->Id)
 	{
 		case GUI_TIMBRE_SELECT:
@@ -988,7 +1034,7 @@ void Draw_Tab_Section_Menu(const LEBEL_UI *UI, TAB_SECTION_INDEX select_tab)
     const uint8_t  pitch     = UI0902_SECTION_PITCH;
     const uint16_t start_x   = UI0902_MARGIN_X; /* 0902-04：12/69/126/183 */
     const uint16_t start_y   = UI->y;
-    /* 0819：演奏段落数字与标题同为 13，按钮内垂直居中（视觉重心 +1） */
+    /* 0819：演奏段落数字与标题同为 13，按钮内垂直居中（视觉重心 +1）；稿面数字整体右移 2px */
     const uint16_t text_y    = start_y + (tab_h - UI0902_FONT_BODY) / 2 + 1;
     const char *nums[4] = {"1", "2", "3", "4"};
     uint8_t i;
@@ -999,7 +1045,7 @@ void Draw_Tab_Section_Menu(const LEBEL_UI *UI, TAB_SECTION_INDEX select_tab)
         uint16_t bg = (select_tab == i) ? COLOR_GRAD_MID : UI0902_ROW_BG;
         LCD_FillRoundRect(x, start_y, tab_w, tab_h, tab_r, bg);
         LCD_ShowString_AutoAlign(
-            x, (uint16_t)(x + tab_w - 1), text_y,
+            (uint16_t)(x + 2), (uint16_t)(x + tab_w - 1 + 2), text_y,
             (const uint8_t*)nums[i],
             UI->Text_Align,
             WHITE,