fn_test and ui_text_input work

src/ui/ui.h

@@ -42,6 +42,63 @@ typedef enum {
 } ui_lop_t;
 
 #include "ui.gen.h"
+
+typedef struct ui_caret_t ui_caret_t;
+struct ui_caret_t {
+    union {
+        i32 e[2];
+        struct { r1i32_t range; };
+    };
+    i32 ifront;
+};
+
+fn ui_caret_t ui_caret_clamp(ui_caret_t c, i32 min, i32 max) {
+    return (ui_caret_t){CLAMP(c.e[0],min,max), CLAMP(c.e[1],min,max), c.ifront};
+}
+fn i32 ui_caret_front(ui_caret_t c) { return c.e[c.ifront]; }
+fn i32 ui_caret_back(ui_caret_t c) { return c.e[c.ifront ? 0 : 1]; }
+
+ui_caret_t ui_caret(i32 front, i32 back) {
+    ui_caret_t result = {0};
+    if (front >= back) {
+        result.range.min = back;
+        result.range.max = front;
+        result.ifront = 1;
+    } else {
+        result.range.min = front;
+        result.range.max = back;
+        result.ifront = 0;
+    }
+    return result;
+}
+
+ui_caret_t ui_caret_set_back(ui_caret_t caret, i32 back) {
+    i32 front = ui_caret_front(caret);
+    ui_caret_t result = ui_caret(front, back);
+    return result;
+}
+
+ui_caret_t ui_caret_set_front(ui_caret_t caret, i32 front) {
+    i32 back = ui_caret_back(caret);
+    ui_caret_t result = ui_caret(front, back);
+    return result;
+}
+
+fn ui_caret_t ui_carets(i32 x) {
+    return ui_caret(x, x);
+}
+
+typedef struct ui_text_input_t ui_text_input_t;
+struct ui_text_input_t {
+    union {
+        struct { char *str; i64 len; };
+        s8_t string;
+    };
+
+    i32 cap;
+    ui_caret_t caret;
+};
+
 typedef struct ui_box_t ui_box_t;
 struct ui_box_t {
     ui_box_t *next;
@@ -74,10 +131,7 @@ struct ui_box_t {
     r2f32_t final_rect;
     b32     expanded;
 
-    i32 ti_cursor;
-    char *ti_buffer;
-    i32 ti_buffer_len;
-    i32 ti_buffer_cap;
+    ui_text_input_t text_input;
 };
 
 typedef struct ui_signal_t ui_signal_t;
@@ -138,4 +192,5 @@ fn void ui_set_rect(ui_box_t *box, r2f32_t rect) { box->rect = box->full_rect =
 #define ui_box_flags(...) (ui_box_flag_t){__VA_ARGS__}
 
 fn ui_id_t ui_id(s8_t string);
-fn ui_id_t ui_idf(char *str, ...);
+fn ui_id_t ui_idf(char *str, ...);
+fn v2f32_t ui_aligned_text_pos(ui_text_align_t text_align, r2f32_t rect, s8_t string);