added scroll list

src/scroll.c

@@ -0,0 +1,45 @@
+#include "tim.h"
+
+void TimScrollState_selectNext(TimScrollState* l){
+    l->cur = (l->cur + 1) % l->len;
+}
+
+void TimScrollState_selectPrev(TimScrollState* l){
+    l->cur = (l->len + l->cur - 1) % l->len;
+}
+
+TimScrollItem* tim_scroll(TimScrollState* l, i32 x, i32 y, i32 w, i32 h, TimStyle style){
+    // select with buttons and mouse wheel
+    if(tim_is_key_press(TimKey_Down) 
+        || (l->use_mouse_wheel && tim_is_mouse_scroll_down()))
+    {
+        TimScrollState_selectNext(l);
+    }
+    if(tim_is_key_press(TimKey_Up) 
+        || (l->use_mouse_wheel && tim_is_mouse_scroll_up()))
+    {
+        TimScrollState_selectPrev(l);
+    }
+    
+    tim->focus = l->items[l->cur].focus_target;
+
+    tim_frame(x, y, w, h, style);
+
+    TimRect absolute = tim_scope_rect_to_absolute(x, y, w, h);
+    TimRect place = { .x = x + 1, .y = y + 1, .w = absolute.w - 2, .h = absolute.h - 2 };
+    for(u32 i = 0; i < l->len; i++){
+        TimScrollItem* item = &l->items[i];
+        place.h = item->h;
+        
+        // select with mouse click
+        if(tim_is_mouse_click_over(tim_scope_rect_to_absolute(place.x, place.y, place.w, place.h))){
+            l->cur = i;
+            tim->focus = item->focus_target;
+        }
+
+        item->draw(i == l->cur, place, item->data);
+        place.y += place.h;
+    }
+
+    return &l->items[l->cur];
+}