scrollbar.h (1650B)
1 /* 2 * Copyright (c) 2021, 2022 lumidify <nobody@lumidify.org> 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #ifndef _LTK_SCROLLBAR_H_ 18 #define _LTK_SCROLLBAR_H_ 19 20 /* Requires: "rect.h", "widget.h", "ltk.h" */ 21 22 typedef struct { 23 ltk_widget widget; 24 void (*callback)(ltk_widget *); 25 void *callback_data; 26 double cur_pos; 27 int virtual_size; 28 int last_mouse_x; 29 int last_mouse_y; 30 ltk_orientation orient; 31 ltk_surface_cache_key *key; 32 } ltk_scrollbar; 33 34 void ltk_scrollbar_set_virtual_size(ltk_scrollbar *scrollbar, int virtual_size); 35 ltk_scrollbar *ltk_scrollbar_create(ltk_window *window, ltk_orientation orient, void (*callback)(ltk_widget *), void *data); 36 void ltk_scrollbar_scroll(ltk_widget *self, int delta, int scaled); 37 38 int ltk_scrollbar_ini_handler(ltk_window *window, const char *prop, const char *value); 39 int ltk_scrollbar_fill_theme_defaults(ltk_window *window); 40 void ltk_scrollbar_uninitialize_theme(ltk_window *window); 41 42 #endif /* _LTK_SCROLLBAR_H_ */