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#include "gui.h"
 7
 8void GUIInit(struct GUIParams* params) {
 9	memset(params->inputHistory, 0, sizeof(params->inputHistory));
10	strncpy(params->currentPath, params->basePath, PATH_MAX);
11}
12
13void GUIPollInput(struct GUIParams* params, uint32_t* newInputOut, uint32_t* heldInput) {
14	uint32_t input = params->pollInput(&params->keyMap);
15	uint32_t newInput = 0;
16	for (int i = 0; i < GUI_INPUT_MAX; ++i) {
17		if (input & (1 << i)) {
18			++params->inputHistory[i];
19		} else {
20			params->inputHistory[i] = -1;
21		}
22		if (!params->inputHistory[i] || (params->inputHistory[i] >= 30 && !(params->inputHistory[i] % 5))) {
23			newInput |= (1 << i);
24		}
25	}
26	if (newInputOut) {
27		*newInputOut = newInput;
28	}
29	if (heldInput) {
30		*heldInput = input;
31	}
32}
33
34enum GUICursorState GUIPollCursor(struct GUIParams* params, unsigned* x, unsigned* y) {
35	if (!params->pollCursor) {
36		return GUI_CURSOR_NOT_PRESENT;
37	}
38	enum GUICursorState state = params->pollCursor(x, y);
39	if (params->cursorState == GUI_CURSOR_DOWN) {
40		int dragX = *x - params->cx;
41		int dragY = *y - params->cy;
42		if (dragX * dragX + dragY * dragY > 25) {
43			params->cursorState = GUI_CURSOR_DRAGGING;
44			return GUI_CURSOR_DRAGGING;
45		}
46		if (state == GUI_CURSOR_UP || state == GUI_CURSOR_NOT_PRESENT) {
47			params->cursorState = GUI_CURSOR_UP;
48			return GUI_CURSOR_CLICKED;
49		}
50	} else {
51		params->cx = *x;
52		params->cy = *y;
53	}
54	if (params->cursorState == GUI_CURSOR_DRAGGING) {
55		if (state == GUI_CURSOR_UP || state == GUI_CURSOR_NOT_PRESENT) {
56			params->cursorState = GUI_CURSOR_UP;
57			return GUI_CURSOR_UP;
58		}
59		return GUI_CURSOR_DRAGGING;
60	}
61	params->cursorState = state;
62	return params->cursorState;
63}
64
65void GUIInvalidateKeys(struct GUIParams* params) {
66	for (int i = 0; i < GUI_INPUT_MAX; ++i) {
67		params->inputHistory[i] = 0;
68	}
69}