feat: input handler work

src/input.cpp

@@ -0,0 +1,25 @@
+#include "input.h"
+
+#include <assert.h>
+#include "input/wayland.h"
+
+InputHandler* InputHandler::s_instance = nullptr;
+
+// TODO: dynamically load input handling implementation depending on platform
+#define WAYLAND 1
+
+InputHandler::InputHandler() {
+#ifdef WAYLAND
+	m_impl = new WaylandInputHandler();
+#endif
+	assert(m_impl && "no implementation found for this platform");
+}
+
+size_t InputHandler::GetMouseX() {
+	return m_impl->GetMouseX();
+}
+
+size_t InputHandler::GetMouseY() {
+	return m_impl->GetMouseY();
+}
+

src/input/wayland.cpp

@@ -10,10 +10,9 @@
 
 #define UNUSED(x) (void)(x)
 
-WaylandInputHandler *WaylandInputHandler::s_instance = nullptr;
-
 WaylandInputHandler::WaylandInputHandler() {
   auto pointer = WaylandState::GetInstance()->m_pointer;
+	assert(pointer && "wayland seat_pointer not initialized");
 	m_pointer_listener.enter = handle_pointer_enter;
 	m_pointer_listener.leave = handle_pointer_leave;
 	m_pointer_listener.motion = handle_pointer_motion;
@@ -28,10 +27,12 @@ WaylandInputHandler::WaylandInputHandler() {
   wl_pointer_add_listener(pointer, &m_pointer_listener, this);
 }
 
-WaylandInputHandler *WaylandInputHandler::GetInstance() {
-  if (!WaylandInputHandler::s_instance)
-    WaylandInputHandler::s_instance = new WaylandInputHandler();
-  return s_instance;
+size_t WaylandInputHandler::GetMouseX() {
+	return wl_fixed_to_double(m_surface_x);
+}
+
+size_t WaylandInputHandler::GetMouseY() {
+	return wl_fixed_to_double(m_surface_y);
 }
 
 void WaylandInputHandler::handle_pointer_enter(
@@ -41,8 +42,9 @@ void WaylandInputHandler::handle_pointer_enter(
 	UNUSED(surface);
 	auto handler = reinterpret_cast<WaylandInputHandler*>(data);
 	// auto state = WaylandState::GetInstance();
-	UNUSED(handler);
 	printf("[DEBUG] INPUT.POINTER: pointer enter event:\n\tserial = %d, surface_x = %f, surface_y = %f\n", serial, wl_fixed_to_double(surface_x), wl_fixed_to_double(surface_y));
+	handler->m_surface_x = surface_x;
+	handler->m_surface_y = surface_y;
 	// const char* cursor_theme = "XCursor-Pro-Dark";
 	// auto theme = wl_cursor_theme_load(cursor_theme, 22, state->m_shm);
 	// printf("[DEBUG] CURSOR: theme '%s' loaded: %p\n", cursor_theme, theme);
@@ -59,45 +61,95 @@ void WaylandInputHandler::handle_pointer_enter(
 void WaylandInputHandler::handle_pointer_leave(void *data,
                                                struct wl_pointer *wl_pointer,
                                                uint32_t serial,
-                                               struct wl_surface *surface) {}
+                                               struct wl_surface *surface) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(serial);
+	UNUSED(surface);
+}
 
 void WaylandInputHandler::handle_pointer_motion(void *data,
                                                 struct wl_pointer *wl_pointer,
                                                 uint32_t time,
                                                 wl_fixed_t surface_x,
-                                                wl_fixed_t surface_y) {}
+                                                wl_fixed_t surface_y) {
+	UNUSED(wl_pointer);
+	UNUSED(time);
+	auto handler = reinterpret_cast<WaylandInputHandler*>(data);
+	handler->m_surface_x = surface_x;
+	handler->m_surface_y = surface_y;
+}
 
 void WaylandInputHandler::handle_pointer_button(void *data,
                                                 struct wl_pointer *wl_pointer,
                                                 uint32_t serial, uint32_t time,
                                                 uint32_t button,
-                                                uint32_t state) {}
+                                                uint32_t state) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(serial);
+	UNUSED(button);
+	UNUSED(state);
+	UNUSED(time);
+}
 
 void WaylandInputHandler::handle_pointer_axis(void *data,
                                               struct wl_pointer *wl_pointer,
                                               uint32_t time, uint32_t axis,
-                                              wl_fixed_t value) {}
+                                              wl_fixed_t value) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(axis);
+	UNUSED(value);
+	UNUSED(time);
+}
 
 void WaylandInputHandler::handle_pointer_frame(void *data,
                                                struct wl_pointer *wl_pointer) {
 	printf("[DEBUG] INPUT.POINTER: received pointer frame event\n");
+	UNUSED(data);
+	UNUSED(wl_pointer);
 }
 
 void WaylandInputHandler::handle_pointer_axis_source(
-    void *data, struct wl_pointer *wl_pointer, uint32_t axis_source) {}
+    void *data, struct wl_pointer *wl_pointer, uint32_t axis_source) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(axis_source);
+}
 
 void WaylandInputHandler::handle_pointer_axis_stop(
-    void *data, struct wl_pointer *wl_pointer, uint32_t time, uint32_t axis) {}
+    void *data, struct wl_pointer *wl_pointer, uint32_t time, uint32_t axis) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(time);
+	UNUSED(axis);
+}
 
 void WaylandInputHandler::handle_pointer_axis_discrete(
     void *data, struct wl_pointer *wl_pointer, uint32_t axis,
-    int32_t discrete) {}
+    int32_t discrete) {
+	UNUSED(data);
+	UNUSED(wl_pointer);
+	UNUSED(axis);
+	UNUSED(discrete);
+}
 
 void WaylandInputHandler::handle_pointer_axis_value120(
     void *data, struct wl_pointer *wl_pointer, uint32_t axis,
-    int32_t value120) {}
+    int32_t value120) {
+	UNUSED(data);
+	UNUSED(value120);
+	UNUSED(axis);
+	UNUSED(wl_pointer);
+}
 
 void WaylandInputHandler::handle_pointer_axis_relative_direction(
     void *data, struct wl_pointer *wl_pointer, uint32_t axis,
-    uint32_t direction) {}
+    uint32_t direction) {
+	UNUSED(data);
+	UNUSED(direction);
+	UNUSED(axis);
+	UNUSED(wl_pointer);
+}
 

src/main.cpp

@@ -1,6 +1,6 @@
 #include <stdio.h>
 
-#include "input/wayland.h"
+#include "input.h"
 #include "window.h"
 #include "renderer.h"
 
@@ -10,7 +10,13 @@ static Window window(720, 480);
 
 void HandleFrame() {
 		printf("[APP]: width = %zu, height = %zu\n", window.GetWidth(), window.GetHeight());
-		WaylandInputHandler::GetInstance();
+		auto x = InputHandler::GetInstance()->GetMouseX();
+		auto y = InputHandler::GetInstance()->GetMouseY();
+		printf("[APP]: mouse position: x = %zu, y = %zu\n", x, y);
+}
+
+void HandleMouseMove() {
+		printf("[APP]: mouse moved");
 }
 
 int main(int argc, char **argv) {
@@ -18,6 +24,7 @@ int main(int argc, char **argv) {
   UNUSED(argv);
 
 	Renderer::GetInstance();
+	Window::Init();
 
 	window.OnFrame(HandleFrame);
 

src/window.cpp

@@ -1,6 +1,7 @@
 #include <stdio.h>
 
 #include "window.h"
+#include "state/wayland.h"
 
 #define WINDOW_WAYLAND 1
 
@@ -9,11 +10,19 @@
 #endif
 
 Window::Window(size_t width, size_t height)
-    :  m_last_time(0), m_width(width), m_height(height) {
+	:  m_last_time(0), m_width(width), m_height(height) {
 #ifdef WINDOW_WAYLAND
-			m_impl = new WaylandWindowImpl(width, height);
+	m_impl = new WaylandWindowImpl(width, height);
 #endif
-		}
+}
+
+void Window::Init() {
+#ifdef WINDOW_WAYLAND
+	printf("[DEBUG] Window::Init() called\n");
+	WaylandState::GetInstance();
+	WaylandWindowImpl::Init();
+#endif
+}
 
 Window::~Window() {}
 

src/window/wayland.cpp

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <assert.h>
 #include <wayland-client-core.h>
 #include <wayland-client-protocol.h>
 
@@ -100,6 +101,12 @@ WaylandWindowImpl::~WaylandWindowImpl() { m_running = false; }
 
 void WaylandWindowImpl::OnFrame(IFrameListener fn) { m_on_frame = fn; }
 
+void WaylandWindowImpl::Init() {
+	auto display = WaylandState::GetInstance()->m_display;
+	assert(display && "wayland display is not initialized");
+	wl_display_dispatch_pending(display);
+}
+
 bool WaylandWindowImpl::Dispatch() {
 	if (!m_running) return false;