From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 27 Dec 2025 12:03:39 -0800
Subject: Initial commit

---
 contrib/SDL-3.2.8/src/test/SDL_test_font.c | 159 +++++++++++++++++++++++++++++
 1 file changed, 159 insertions(+)
 create mode 100644 contrib/SDL-3.2.8/src/test/SDL_test_font.c

(limited to 'contrib/SDL-3.2.8/src/test/SDL_test_font.c')

diff --git a/contrib/SDL-3.2.8/src/test/SDL_test_font.c b/contrib/SDL-3.2.8/src/test/SDL_test_font.c
new file mode 100644
index 0000000..00268f6
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/test/SDL_test_font.c
@@ -0,0 +1,159 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include <SDL3/SDL_test.h>
+
+#define UTF8_IsTrailingByte(c) ((c) >= 0x80 && (c) <= 0xBF)
+
+int FONT_CHARACTER_SIZE = SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE;
+
+bool SDLTest_DrawCharacter(SDL_Renderer *renderer, float x, float y, Uint32 c)
+{
+    char str[5];
+    char *ptr = SDL_UCS4ToUTF8(c, str);
+    *ptr = '\0';
+    return SDL_RenderDebugText(renderer, x, y, str);
+}
+
+bool SDLTest_DrawString(SDL_Renderer *renderer, float x, float y, const char *s)
+{
+    return SDL_RenderDebugText(renderer, x, y, s);
+}
+
+SDLTest_TextWindow *SDLTest_TextWindowCreate(float x, float y, float w, float h)
+{
+    SDLTest_TextWindow *textwin = (SDLTest_TextWindow *)SDL_malloc(sizeof(*textwin));
+
+    if (!textwin) {
+        return NULL;
+    }
+
+    textwin->rect.x = x;
+    textwin->rect.y = y;
+    textwin->rect.w = w;
+    textwin->rect.h = h;
+    textwin->current = 0;
+    textwin->numlines = (int)SDL_ceilf(h / FONT_LINE_HEIGHT);
+    textwin->lines = (char **)SDL_calloc(textwin->numlines, sizeof(*textwin->lines));
+    if (!textwin->lines) {
+        SDL_free(textwin);
+        return NULL;
+    }
+    return textwin;
+}
+
+void SDLTest_TextWindowDisplay(SDLTest_TextWindow *textwin, SDL_Renderer *renderer)
+{
+    int i;
+    float y;
+
+    for (y = textwin->rect.y, i = 0; i < textwin->numlines; ++i, y += FONT_LINE_HEIGHT) {
+        if (textwin->lines[i]) {
+            SDLTest_DrawString(renderer, textwin->rect.x, y, textwin->lines[i]);
+        }
+    }
+}
+
+void SDLTest_TextWindowAddText(SDLTest_TextWindow *textwin, const char *fmt, ...)
+{
+    char text[1024];
+    va_list ap;
+
+    va_start(ap, fmt);
+    (void)SDL_vsnprintf(text, sizeof(text), fmt, ap);
+    va_end(ap);
+
+    SDLTest_TextWindowAddTextWithLength(textwin, text, SDL_strlen(text));
+}
+
+void SDLTest_TextWindowAddTextWithLength(SDLTest_TextWindow *textwin, const char *text, size_t len)
+{
+    size_t existing;
+    bool newline = false;
+    char *line;
+
+    if (len > 0 && text[len - 1] == '\n') {
+        --len;
+        newline = true;
+    }
+
+    if (textwin->lines[textwin->current]) {
+        existing = SDL_strlen(textwin->lines[textwin->current]);
+    } else {
+        existing = 0;
+    }
+
+    if (*text == '\b') {
+        if (existing) {
+            while (existing > 1 && UTF8_IsTrailingByte((Uint8)textwin->lines[textwin->current][existing - 1])) {
+                --existing;
+            }
+            --existing;
+            textwin->lines[textwin->current][existing] = '\0';
+        } else if (textwin->current > 0) {
+            SDL_free(textwin->lines[textwin->current]);
+            textwin->lines[textwin->current] = NULL;
+            --textwin->current;
+        }
+        return;
+    }
+
+    line = (char *)SDL_realloc(textwin->lines[textwin->current], existing + len + 1);
+    if (line) {
+        SDL_memcpy(&line[existing], text, len);
+        line[existing + len] = '\0';
+        textwin->lines[textwin->current] = line;
+        if (newline) {
+            if (textwin->current == textwin->numlines - 1) {
+                SDL_free(textwin->lines[0]);
+                SDL_memmove(&textwin->lines[0], &textwin->lines[1], (textwin->numlines - 1) * sizeof(textwin->lines[1]));
+                textwin->lines[textwin->current] = NULL;
+            } else {
+                ++textwin->current;
+            }
+        }
+    }
+}
+
+void SDLTest_TextWindowClear(SDLTest_TextWindow *textwin)
+{
+    int i;
+
+    for (i = 0; i < textwin->numlines; ++i) {
+        if (textwin->lines[i]) {
+            SDL_free(textwin->lines[i]);
+            textwin->lines[i] = NULL;
+        }
+    }
+    textwin->current = 0;
+}
+
+void SDLTest_TextWindowDestroy(SDLTest_TextWindow *textwin)
+{
+    if (textwin) {
+        SDLTest_TextWindowClear(textwin);
+        SDL_free(textwin->lines);
+        SDL_free(textwin);
+    }
+}
+
+void SDLTest_CleanupTextDrawing(void)
+{
+}
-- 
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