some work on international string util

src/coins.c

@@ -5,12 +5,12 @@
 #include "text_window.h"
 #include "string_util.h"
 #include "menu.h"
+#include "international_string_util.h"
 
 #define MAX_COINS 9999
 
 EWRAM_DATA u8 sCoinsWindowId = 0;
 
-extern s32 GetStringRightAlignXOffset(u8 fontId, u8 *str, s32 totalWidth);
 extern void sub_819746C(u8 windowId, bool8 copyToVram);
 
 extern const u8 gText_Coins[];

src/international_string_util.c

@@ -0,0 +1,57 @@
+#include "global.h"
+#include "international_string_util.h"
+#include "text.h"
+
+extern s32 convert_pixel_width_to_tile_width(s32 a0); // script menu
+
+s32 GetStringCenterAlignXOffset(s32 fontId, const u8 *str, s32 totalWidth)
+{
+    return GetStringCenterAlignXOffsetWithLetterSpacing(fontId, str, totalWidth, 0);
+}
+
+s32 GetStringRightAlignXOffset(s32 fontId, const u8 *str, s32 totalWidth)
+{
+    return GetStringWidthDifference(fontId, str, totalWidth, 0);
+}
+
+s32 GetStringCenterAlignXOffsetWithLetterSpacing(s32 fontId, const u8 *str, s32 totalWidth, s32 letterSpacing)
+{
+    return GetStringWidthDifference(fontId, str, totalWidth, letterSpacing) / 2;
+}
+
+s32 GetStringWidthDifference(s32 fontId, const u8 *str, s32 totalWidth, s32 letterSpacing)
+{
+    s32 stringWidth = GetStringWidth(fontId, str, letterSpacing);
+    if (totalWidth > stringWidth)
+        return totalWidth - stringWidth;
+    else
+        return 0;
+}
+
+s32 GetMaxWidthInMenuTable(const u8 **str, s32 arg1)
+{
+    s32 i, var;
+
+    for (var = 0, i = 0; i < arg1; i++)
+    {
+        s32 stringWidth = GetStringWidth(1, str[i * 2], 0);
+        if (stringWidth > var)
+            var = stringWidth;
+    }
+
+    return convert_pixel_width_to_tile_width(var);
+}
+
+s32 sub_81DB3D8(const u8 **str, u8* arg1, s32 arg2)
+{
+    s32 i, var;
+
+    for (var = 0, i = 0; i < arg2; i++)
+    {
+        s32 stringWidth = GetStringWidth(1, str[arg1[i] * 2], 0);
+        if (stringWidth > var)
+            var = stringWidth;
+    }
+
+    return convert_pixel_width_to_tile_width(var);
+}