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zydeco / 1467546

Experiment in graphics programming, C++, OpenGL, simulation techniques.

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916 Nov 2023 11:11a4d3636Fractal ViewerJosh Stockin15044G

Blob @ zydeco / src / sdl2 / EventHandlerSDL2.cpp

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1#include "ZydecoCommon.hpp"
2#include "CommonSDL2.hpp"
3#include "EventHandlerSDL2.hpp"
4
5#include "IEventKeyboardSubscriber.hpp"
6#include "IEventMouseSubscriber.hpp"
7#include "IEventQuitSubscriber.hpp"
8#include "IEventWindowSubscriber.hpp"
9
10
11static Logger LOGGER("EventHandlerSDL2");
12
13
14#define DISPATCH_EVENT(TYPE, EVENT, VALS...) \
15 LOGGER.Log(Logger::TRACE, "Update(): Dispatching On" #EVENT); \
16 for (IEvent ## TYPE ## Subscriber *subscriber : m_event ## TYPE ## Subscribers) \
17 { \
18 subscriber->On##EVENT(VALS); \
19 } \
20 break;
21
22
23EventHandlerSDL2::EventHandlerSDL2()
24{
25 LOGGER.Log(Logger::TRACE, "EventHandlerSDL2()");
26}
27
28EventHandlerSDL2::~EventHandlerSDL2()
29{
30 LOGGER.Log(Logger::TRACE, "~EventHandlerSDL2()");
31}
32
33bool EventHandlerSDL2::Update()
34{
35 bool quit = false;
36
37 SDL_Event event;
38 while (SDL_PollEvent(&event))
39 {
40 ImGui_ImplSDL2_ProcessEvent(&event);
41 if (ImGui::GetIO().WantCaptureMouse) { continue; }
42
43 switch (event.type)
44 {
45 case SDL_KEYDOWN: DISPATCH_EVENT(Keyboard, KeyPressEvent, event.key.keysym.sym, event.key.keysym.mod);
46 case SDL_KEYUP: DISPATCH_EVENT(Keyboard, KeyReleaseEvent, event.key.keysym.sym, event.key.keysym.mod);
47 case SDL_MOUSEBUTTONDOWN:
48 {
49 switch (event.button.button)
50 {
51 case SDL_BUTTON_LEFT: DISPATCH_EVENT(Mouse, MouseLeftDownEvent, event.button.x, event.button.y);
52 case SDL_BUTTON_MIDDLE: DISPATCH_EVENT(Mouse, MouseMiddleDownEvent, event.button.x, event.button.y);
53 case SDL_BUTTON_RIGHT: DISPATCH_EVENT(Mouse, MouseRightDownEvent, event.button.x, event.button.y);
54 default: break;
55 }
56 break;
57 }
58 case SDL_MOUSEBUTTONUP:
59 {
60 switch (event.button.button)
61 {
62 case SDL_BUTTON_LEFT: DISPATCH_EVENT(Mouse, MouseLeftUpEvent, event.button.x, event.button.y);
63 case SDL_BUTTON_MIDDLE: DISPATCH_EVENT(Mouse, MouseMiddleUpEvent, event.button.x, event.button.y);
64 case SDL_BUTTON_RIGHT: DISPATCH_EVENT(Mouse, MouseRightUpEvent, event.button.x, event.button.y);
65 default: break;
66 }
67 break;
68 }
69 case SDL_MOUSEMOTION: DISPATCH_EVENT(Mouse, MouseMoveEvent, event.motion.x, event.motion.y, event.motion.xrel, event.motion.yrel);
70 case SDL_MOUSEWHEEL: DISPATCH_EVENT(Mouse, MouseWheelScrollEvent, event.motion.xrel, event.motion.yrel);
71 case SDL_QUIT:
72 {
73 quit = true;
74 DISPATCH_EVENT(Quit, QuitEvent);
75 }
76 case SDL_WINDOWEVENT:
77 {
78 switch (event.window.event)
79 {
80 case SDL_WINDOWEVENT_MINIMIZED: DISPATCH_EVENT(Window, WindowMinimizedEvent);
81 case SDL_WINDOWEVENT_MAXIMIZED: DISPATCH_EVENT(Window, WindowMaximizedEvent);
82 case SDL_WINDOWEVENT_RESTORED: DISPATCH_EVENT(Window, WindowRestoredEvent);
83 case SDL_WINDOWEVENT_EXPOSED: DISPATCH_EVENT(Window, WindowExposedEvent);
84 case SDL_WINDOWEVENT_RESIZED: DISPATCH_EVENT(Window, WindowResizedEvent, event.window.data1, event.window.data2);
85 case SDL_WINDOWEVENT_CLOSE: DISPATCH_EVENT(Window, WindowRequestedCloseEvent);
86 default: break;
87 }
88 break;
89 }
90 default: break;
91 }
92
93 if (quit)
94 {
95 LOGGER.Log(Logger::DEBUG, "Update(): Exiting EventHandler loop");
96 return true;
97 }
98 }
99
100 return false;
101}
102
103bool EventHandlerSDL2::RegisterKeyboardEventSubscriber(IEventKeyboardSubscriber *p_event_keyboard_subscriber)
104{
105 LOGGER.Log(Logger::DEBUG, "RegisterKeyboardEventSubscriber(): Registering IEventKeyboardSubscriber");
106
107 if (m_eventKeyboardSubscribers.size() >= MAXIMUM_EVENT_SUBSCRIBERS)
108 {
109 LOGGER.Log(Logger::ERROR, "RegisterKeyboardEventSubscriber(): Failed to register IEventKeyboardSubscriber; too many registered");
110 return false;
111 }
112
113 m_eventKeyboardSubscribers.push_back(p_event_keyboard_subscriber);
114 return true;
115}
116
117bool EventHandlerSDL2::RegisterMouseEventSubscriber(IEventMouseSubscriber *p_event_mouse_subscriber)
118{
119 LOGGER.Log(Logger::DEBUG, "RegisterMouseEventSubscriber(): Registering IEventMouseSubscriber");
120
121 if (m_eventMouseSubscribers.size() >= MAXIMUM_EVENT_SUBSCRIBERS)
122 {
123 LOGGER.Log(Logger::ERROR, "RegisterMouseEventSubscriber(): Failed to register IEventMouseSubscriber; too many registered");
124 return false;
125 }
126
127 m_eventMouseSubscribers.push_back(p_event_mouse_subscriber);
128 return true;
129}
130
131bool EventHandlerSDL2::RegisterQuitEventSubscriber(IEventQuitSubscriber *p_event_quit_subscriber)
132{
133 LOGGER.Log(Logger::DEBUG, "RegisterQuitEventSubscriber(): Registering IEventQuitSubscriber");
134
135 if (m_eventQuitSubscribers.size() >= MAXIMUM_EVENT_SUBSCRIBERS)
136 {
137 LOGGER.Log(Logger::ERROR, "RegisterQuitEventSubscriber(): Failed to register IEventQuitSubscriber; too many registered");
138 return false;
139 }
140
141 m_eventQuitSubscribers.push_back(p_event_quit_subscriber);
142 return true;
143}
144
145bool EventHandlerSDL2::RegisterWindowEventSubscriber(IEventWindowSubscriber *p_event_window_subscriber)
146{
147 LOGGER.Log(Logger::DEBUG, "RegisterWindowEventSubscriber(): Registering IEventWindowSubscriber");
148
149 if (m_eventWindowSubscribers.size() >= MAXIMUM_EVENT_SUBSCRIBERS)
150 {
151 LOGGER.Log(Logger::ERROR, "RegisterWindowEventSubscriber(): Failed to register IEventWindowSubscriber; too many registered");
152 return false;
153 }
154
155 m_eventWindowSubscribers.push_back(p_event_window_subscriber);
156 return true;
157}
158