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 <mgba-util/common.h>
10
11CXX_GUARD_START
12
13// TODO: Fix layering violation
14#include <mgba/core/input.h>
15#include <mgba-util/vector.h>
16
17struct GUIFont;
18
19enum GUIInput {
20	GUI_INPUT_NONE = -1,
21	GUI_INPUT_SELECT = 0,
22	GUI_INPUT_BACK,
23	GUI_INPUT_CANCEL,
24
25	GUI_INPUT_UP,
26	GUI_INPUT_DOWN,
27	GUI_INPUT_LEFT,
28	GUI_INPUT_RIGHT,
29
30	GUI_INPUT_USER_START = 0x8,
31
32	GUI_INPUT_MAX = 0x20
33};
34
35enum GUICursorState {
36	GUI_CURSOR_NOT_PRESENT = 0,
37	GUI_CURSOR_UP,
38	GUI_CURSOR_DOWN,
39	GUI_CURSOR_CLICKED,
40	GUI_CURSOR_DRAGGING
41};
42
43enum {
44	BATTERY_EMPTY = 0,
45	BATTERY_LOW = 25,
46	BATTERY_HALF = 50,
47	BATTERY_HIGH = 75,
48	BATTERY_FULL = 100,
49	BATTERY_VALUE = 0x7F,
50	BATTERY_PERCENTAGE_VALID = 0x80,
51
52	BATTERY_CHARGING = 0x100,
53	BATTERY_NOT_PRESENT = 0x200,
54};
55
56struct GUIBackground {
57	void (*draw)(struct GUIBackground*, void* context);
58};
59
60struct GUIParams {
61	unsigned width;
62	unsigned height;
63	const struct GUIFont* font;
64	const char* basePath;
65
66	void (*drawStart)(void);
67	void (*drawEnd)(void);
68	uint32_t (*pollInput)(const struct mInputMap*);
69	enum GUICursorState (*pollCursor)(unsigned* x, unsigned* y);
70	int (*batteryState)(void);
71	void (*guiPrepare)(void);
72	void (*guiFinish)(void);
73
74	// State
75	struct mInputMap keyMap;
76	int inputHistory[GUI_INPUT_MAX];
77	enum GUICursorState cursorState;
78	int cx, cy;
79
80	// Directories
81	char currentPath[PATH_MAX];
82	size_t fileIndex;
83};
84
85void GUIInit(struct GUIParams* params);
86void GUIPollInput(struct GUIParams* params, uint32_t* newInput, uint32_t* heldInput);
87enum GUICursorState GUIPollCursor(struct GUIParams* params, unsigned* x, unsigned* y);
88void GUIInvalidateKeys(struct GUIParams* params);
89
90CXX_GUARD_END
91
92#endif