1/**
2 * Copyright (c) 2006-2023 LOVE Development Team
3 *
4 * This software is provided 'as-is', without any express or implied
5 * warranty. In no event will the authors be held liable for any damages
6 * arising from the use of this software.
7 *
8 * Permission is granted to anyone to use this software for any purpose,
9 * including commercial applications, and to alter it and redistribute it
10 * freely, subject to the following restrictions:
11 *
12 * 1. The origin of this software must not be misrepresented; you must not
13 * claim that you wrote the original software. If you use this software
14 * in a product, an acknowledgment in the product documentation would be
15 * appreciated but is not required.
16 * 2. Altered source versions must be plainly marked as such, and must not be
17 * misrepresented as being the original software.
18 * 3. This notice may not be removed or altered from any source distribution.
19 **/
20
21// LOVE
22#include "common/config.h"
23#include "common/Exception.h"
24#include "Touch.h"
25
26// C++
27#include <algorithm>
28
29namespace love
30{
31namespace touch
32{
33namespace sdl
34{
35
36const std::vector<Touch::TouchInfo> &Touch::getTouches() const
37{
38 return touches;
39}
40
41const Touch::TouchInfo &Touch::getTouch(int64 id) const
42{
43 for (const auto &touch : touches)
44 {
45 if (touch.id == id)
46 return touch;
47 }
48
49 throw love::Exception("Invalid active touch ID: %d", id);
50}
51
52const char *Touch::getName() const
53{
54 return "love.touch.sdl";
55}
56
57void Touch::onEvent(Uint32 eventtype, const TouchInfo &info)
58{
59 auto compare = [&](const TouchInfo &touch) -> bool
60 {
61 return touch.id == info.id;
62 };
63
64 switch (eventtype)
65 {
66 case SDL_FINGERDOWN:
67 touches.erase(std::remove_if(touches.begin(), touches.end(), compare), touches.end());
68 touches.push_back(info);
69 break;
70 case SDL_FINGERMOTION:
71 {
72 for (TouchInfo &touch : touches)
73 {
74 if (touch.id == info.id)
75 touch = info;
76 }
77 break;
78 }
79 case SDL_FINGERUP:
80 touches.erase(std::remove_if(touches.begin(), touches.end(), compare), touches.end());
81 break;
82 default:
83 break;
84 }
85}
86
87} // sdl
88} // touch
89} // love
90