From 814e5ea011ddebadc0a4ee059e17c73a04ea5359 Mon Sep 17 00:00:00 2001
From: NishiOwO <nishi@nishi.boats>
Date: Thu, 9 Oct 2025 11:21:39 +0000
Subject: [PATCH] renders

git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@242 b9cfdab3-6d41-4d17-bbe4-086880011989
---
 include/Mw/Unicode.h | 11 +++++++++++
 src/draw.c           |  9 +++++++--
 src/unicode.c        | 20 ++++++++++++++++++++
 src/widget/entry.c   |  9 ++++-----
 4 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/include/Mw/Unicode.h b/include/Mw/Unicode.h
index 23893a1..0450bf1 100644
--- a/include/Mw/Unicode.h
+++ b/include/Mw/Unicode.h
@@ -28,6 +28,17 @@ MWDECL int MwUTF8ToUTF32(const char* input, int* output);
  */
 MWDECL int MwUTF8Length(const char* input);
 
+/*!
+ * %brief Copies UTF-8 string to other string
+ * %brief src Source
+ * %brief srcskip Length to be skipped
+ * %brief dst Destination
+ * %brief dstskip Length to be skipped
+ * %brief len Length
+ * %return Copied length in bytes
+ */
+MWDECL int MwUTF8Copy(const char* src, int srcskip, char* dst, int dstskip, int len);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/draw.c b/src/draw.c
index 76f7942..e227aa6 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -372,7 +372,12 @@ void MwDrawText(MwWidget handle, MwPoint* point, const char* text, int bold, int
 		sx -= strlen(text) * FontWidth * FontScale;
 	}
 
-	for(i = 0; text[i] != 0; i++) {
+	while(text[i] != 0) {
+		int out;
+		i += MwUTF8ToUTF32(text, &out);
+
+		if(out >= 0x80) out = 0;
+
 		for(y = 0; y < FontHeight; y++) {
 			for(x = 0; x < FontWidth; x++) {
 				r.x	 = sx + x * FontScale;
@@ -380,7 +385,7 @@ void MwDrawText(MwWidget handle, MwPoint* point, const char* text, int bold, int
 				r.width	 = FontScale;
 				r.height = FontScale;
 
-				if((bold ? MwBoldFontData : MwFontData)[(unsigned char)text[i]].data[y] & (1 << ((FontWidth - 1) - x))) {
+				if((bold ? MwBoldFontData : MwFontData)[out].data[y] & (1 << ((FontWidth - 1) - x))) {
 					MwDrawRect(handle, &r, color);
 				}
 			}
diff --git a/src/unicode.c b/src/unicode.c
index 04b2a34..06fbd88 100644
--- a/src/unicode.c
+++ b/src/unicode.c
@@ -74,3 +74,23 @@ int MwUTF8Length(const char* input) {
 
 	return len;
 }
+
+int MwUTF8Copy(const char* src, int srcskip, char* dst, int dstskip, int len){
+	int i;
+	int out;
+	int total = 0;
+	for(i = 0; i < srcskip; i++) src += MwUTF8ToUTF32(src, &out);
+	for(i = 0; i < dstskip; i++) dst += MwUTF8ToUTF32(dst, &out);
+	for(i = 0; i < len; i++){
+		int len = MwUTF8ToUTF32(src, &out);
+
+		memcpy(dst, src, len);
+
+		src += len;
+		dst += len;
+		total += len;
+	}
+	dst[total] = 0;
+
+	return total;
+}
diff --git a/src/widget/entry.c b/src/widget/entry.c
index 8f77a31..994b831 100644
--- a/src/widget/entry.c
+++ b/src/widget/entry.c
@@ -13,7 +13,7 @@ static int create(MwWidget handle) {
 
 	MwSetDefault(handle);
 
-	MwSetText(handle, MwNtext, "こんにちは、世界");
+	MwSetText(handle, MwNtext, "こんにちは、世界 Hello, World");
 	MwLLSetCursor(handle->lowlevel, &MwCursorText, &MwCursorTextMask);
 
 	return 0;
@@ -111,12 +111,11 @@ static void key(MwWidget handle, int code) {
 		if(t->cursor == (int)strlen(str)) return;
 		t->cursor++;
 	} else {
-		int i, incr = 0;
+		int incr = 0;
 		out = malloc(strlen(str) + 1 + 1);
-		for(i = 0; i < t->cursor; i++) out[incr++] = str[i];
+		incr += MwUTF8Copy(str, 0, out, 0, t->cursor);
 		out[incr++] = code;
-		for(i = t->cursor; i < (int)strlen(str); i++) out[incr++] = str[i];
-		out[incr++] = 0;
+		MwUTF8Copy(str, t->cursor, out, t->cursor + 1, MwUTF8Length(str) - t->cursor);
 
 		t->cursor++;