From d2711061b06a95bdf0170e86c1c723a32a6527ba Mon Sep 17 00:00:00 2001
From: physick <mynameisgennadiy@vk.com>
Date: Sun, 30 Aug 2026 20:12:17 +0500
Subject: collection view start

---
 src/ui_elements/UI.c | 34 ++++++++++++++++++++++++++++------
 1 file changed, 28 insertions(+), 6 deletions(-)

(limited to 'src/ui_elements')

diff --git a/src/ui_elements/UI.c b/src/ui_elements/UI.c
index 9f17826..85c7a02 100644
--- a/src/ui_elements/UI.c
+++ b/src/ui_elements/UI.c
@@ -1,5 +1,6 @@
 #include "UI.h"
 #include <raylib.h>
+#include <stdio.h>
 #include "../resources/resources.h"
 
 const int MAX_LINES = 8192;
@@ -17,22 +18,42 @@ float MeasureChar(Font *font, int height, char symbol) {
 
 int CalculateSpans(Rectangle rec, char *text, Font *font, int height, int *spans) {
     spans[0] = 0;
-    int ptr = 0, span_ptr = 1, last_space_ptr;
+    int ptr = 0, span_ptr = 1;
+    int last_space_ptr = -1;
     float acc = 0;
+
     while (text[ptr] != 0x0) {
         char symbol = text[ptr];
         float char_width = MeasureChar(font, height, symbol);
         acc += char_width + SPACING_H;
-        if (symbol == ' ' || symbol == '\n') last_space_ptr = ptr;
+
+        if (symbol == ' ' || symbol == '\n') {
+            last_space_ptr = ptr;
+        }
         if (acc > rec.width || symbol == '\n') {
-            spans[span_ptr] = last_space_ptr + 1;
-            ptr = last_space_ptr;
+            if (last_space_ptr < spans[span_ptr - 1] || symbol == '\n' && last_space_ptr == -1) {
+                spans[span_ptr] = (ptr > spans[span_ptr - 1]) ? ptr : ptr + 1;
+                last_space_ptr = spans[span_ptr];
+                ptr = spans[span_ptr] - 1;
+            } else {
+                if (spans[span_ptr - 1] == last_space_ptr) {
+                    spans[span_ptr] = ptr;
+                    last_space_ptr = ptr;
+                } else {
+                    spans[span_ptr] = last_space_ptr + 1;
+                }
+                ptr = last_space_ptr;
+            }
+            // printf("span %d = '%.*s'\n", span_ptr, spans[span_ptr] - spans[span_ptr - 1], text + spans[span_ptr - 1]);
             span_ptr++;
             acc = 0;
         }
         ptr++;
-        if (ptr >= MAX_LINES) break;
+        if (span_ptr >= MAX_LINES) break;
     }
+
+    spans[span_ptr] = ptr; 
+    // printf("span %d = '%.*s'\n", span_ptr, spans[span_ptr] - spans[span_ptr - 1], text + spans[span_ptr - 1]);
     return span_ptr + 1;
 }
 
@@ -56,7 +77,7 @@ void DrawTextInRec(Rectangle rec, char *text, Font *font, int height, Color colo
         return;
     }
 
-    int vertical_acc = rec.y - *scroll;
+    int vertical_acc = scroll == NULL? rec.y : rec.y - *scroll;
     int text_height = lines * height;
     int max_scroll = text_height - rec.height;
 
@@ -72,6 +93,7 @@ void DrawTextInRec(Rectangle rec, char *text, Font *font, int height, Color colo
         Vector2 pos = { .x = rec.x, .y = vertical_acc };
         char *line_start = text + spans[i-1];
         int line_length = spans[i] - spans[i-1];
+        // printf("Drawing text '%.*s' at %f;%f\n", line_length, line_start, pos.x, pos.y);
         DrawTextEx(*font, 
                 TextFormat("%.*s", line_length, line_start), 
                 pos, height, SPACING_H, color);
-- 
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