ref: 66c1e7990b7ac332b7bac0fc475e3591b64fd4f7
parent: 7bd17f61f98baa021c9c9596dabd356c0a5395ce
author: cancel <cancel@cancel.fm>
date: Mon Dec 10 20:46:11 EST 2018
Fix mouse hitting when scrolled
--- a/tui_main.c
+++ b/tui_main.c
@@ -994,10 +994,29 @@
a->is_draw_dirty = true;
}
+Usz confine_scrolled_mouse_hit(Usz field_len, Usz visual_coord,
+ int scroll_offset) {+ if (field_len == 0)
+ return 0;
+ if (scroll_offset < 0) {+ if ((Usz)(-scroll_offset) <= visual_coord) {+ visual_coord -= (Usz)(-scroll_offset);
+ } else {+ visual_coord = 0;
+ }
+ } else {+ visual_coord += (Usz)scroll_offset;
+ }
+ if (visual_coord > field_len)
+ visual_coord = field_len - 1;
+ return visual_coord;
+}
+
void app_jump_cursor_to(App_state* a, Usz y, Usz x) {- a->tui_cursor.y = y;
- a->tui_cursor.x = x;
- tui_cursor_confine(&a->tui_cursor, a->field.height, a->field.width);
+ a->tui_cursor.y =
+ confine_scrolled_mouse_hit(a->field.height, y, a->grid_scroll_y);
+ a->tui_cursor.x =
+ confine_scrolled_mouse_hit(a->field.width, x, a->grid_scroll_x);
a->is_draw_dirty = true;
}