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
39enum {
40	BATTERY_EMPTY = 0,
41	BATTERY_LOW = 1,
42	BATTERY_HALF = 2,
43	BATTERY_HIGH = 3,
44	BATTERY_FULL = 4,
45
46	BATTERY_CHARGING = 8
47};
48
49struct GUIBackground {
50	void (*draw)(struct GUIBackground*, void* context);
51};
52
53struct GUIParams {
54	unsigned width;
55	unsigned height;
56	const struct GUIFont* font;
57	const char* basePath;
58
59	void (*drawStart)(void);
60	void (*drawEnd)(void);
61	uint32_t (*pollInput)(void);
62	enum GUICursorState (*pollCursor)(int* x, int* y);
63	int (*batteryState)(void);
64	void (*guiPrepare)(void);
65	void (*guiFinish)(void);
66
67	// State
68	int inputHistory[GUI_INPUT_MAX];
69	enum GUICursorState cursorState;
70	int cx, cy;
71
72	// Directories
73	char currentPath[PATH_MAX];
74	size_t fileIndex;
75};
76
77#define GUI_PARAMS_TRAIL {}, GUI_CURSOR_NOT_PRESENT, 0, 0, "", 0
78
79void GUIInit(struct GUIParams* params);
80void GUIPollInput(struct GUIParams* params, uint32_t* newInput, uint32_t* heldInput);
81enum GUICursorState GUIPollCursor(struct GUIParams* params, int* x, int* y);
82void GUIInvalidateKeys(struct GUIParams* params);
83
84#endif