tscrollbar.h - ltk - Socket-based GUI for X11 (WIP)
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tscrollbar.h (1650B)
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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_ */