1/* Copyright (c) 2013-2015 Jeffrey Pfau
 2 *
 3 * This Source Code Form is subject to the terms of the Mozilla Public
 4 * License, v. 2.0. If a copy of the MPL was not distributed with this
 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 6#ifndef GUI_H
 7#define GUI_H
 8
 9#include "util/common.h"
10
11#include "util/vector.h"
12
13struct GUIFont;
14
15enum GUIInput {
16	GUI_INPUT_NONE = -1,
17	GUI_INPUT_SELECT = 0,
18	GUI_INPUT_BACK,
19	GUI_INPUT_CANCEL,
20
21	GUI_INPUT_UP,
22	GUI_INPUT_DOWN,
23	GUI_INPUT_LEFT,
24	GUI_INPUT_RIGHT,
25
26	GUI_INPUT_USER_START = 0x10,
27
28	GUI_INPUT_MAX = 0x20
29};
30
31enum GUICursorState {
32	GUI_CURSOR_NOT_PRESENT,
33	GUI_CURSOR_UP,
34	GUI_CURSOR_DOWN,
35	GUI_CURSOR_CLICKED,
36	GUI_CURSOR_DRAGGING
37};
38
39struct GUIBackground {
40	void (*draw)(struct GUIBackground*, void* context);
41};
42
43struct GUIParams {
44	unsigned width;
45	unsigned height;
46	const struct GUIFont* font;
47	const char* basePath;
48
49	void (*drawStart)(void);
50	void (*drawEnd)(void);
51	uint32_t (*pollInput)(void);
52	enum GUICursorState (*pollCursor)(int* x, int* y);
53	void (*guiPrepare)(void);
54	void (*guiFinish)(void);
55
56	// State
57	int inputHistory[GUI_INPUT_MAX];
58	enum GUICursorState cursorState;
59	int cx, cy;
60
61	// Directories
62	char currentPath[PATH_MAX];
63	size_t fileIndex;
64};
65
66#define GUI_PARAMS_TRAIL {}, GUI_CURSOR_NOT_PRESENT, 0, 0, "", 0
67
68void GUIInit(struct GUIParams* params);
69void GUIPollInput(struct GUIParams* params, uint32_t* newInput, uint32_t* heldInput);
70enum GUICursorState GUIPollCursor(struct GUIParams* params, int* x, int* y);
71void GUIInvalidateKeys(struct GUIParams* params);
72
73#endif