Merge commit '4e42229bdd980ab50da8b83b1aa1b0877b5a9ef6' as 'external/gainput'

external/gainput/samples/basic/basicsample_linux.cpp

@@ -0,0 +1,119 @@
+
+#include <gainput/gainput.h>
+
+#if defined(GAINPUT_PLATFORM_LINUX)
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+#include <GL/glx.h>
+#include <iostream>
+
+
+// Define your user buttons
+enum Button
+{
+	ButtonMenu,
+	ButtonConfirm,
+	MouseX,
+	MouseY
+};
+
+
+const char* windowName = "Gainput basic sample";
+const int width = 800;
+const int height = 600;
+
+
+int main(int argc, char** argv)
+{
+	static int attributeListDbl[] = {      GLX_RGBA,      GLX_DOUBLEBUFFER, /*In case single buffering is not supported*/      GLX_RED_SIZE,   1,      GLX_GREEN_SIZE, 1,      GLX_BLUE_SIZE,  1,
+		None };
+
+	Display* xDisplay = XOpenDisplay(0);
+	if (xDisplay == 0)
+	{
+		std::cerr << "Cannot connect to X server." << std::endl;
+		return -1;
+	}
+
+	Window root = DefaultRootWindow(xDisplay);
+
+	XVisualInfo* vi = glXChooseVisual(xDisplay, DefaultScreen(xDisplay), attributeListDbl);
+	assert(vi);
+
+	GLXContext context = glXCreateContext(xDisplay, vi, 0, GL_TRUE);
+
+	Colormap cmap = XCreateColormap(xDisplay, root,                   vi->visual, AllocNone);
+
+	XSetWindowAttributes swa;
+	swa.colormap = cmap;
+	swa.event_mask = ExposureMask
+		| KeyPressMask | KeyReleaseMask
+		| PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
+
+	Window xWindow = XCreateWindow(
+			xDisplay, root,
+			0, 0, width, height, 0,
+			CopyFromParent, InputOutput,
+			CopyFromParent, CWEventMask,
+			&swa
+			);
+
+	glXMakeCurrent(xDisplay, xWindow, context);
+
+	XSetWindowAttributes xattr;
+	xattr.override_redirect = False;
+	XChangeWindowAttributes(xDisplay, xWindow, CWOverrideRedirect, &xattr);
+
+	XMapWindow(xDisplay, xWindow);
+	XStoreName(xDisplay, xWindow, windowName);
+
+	// Setup Gainput
+	gainput::InputManager manager;
+	const gainput::DeviceId mouseId = manager.CreateDevice<gainput::InputDeviceMouse>();
+	const gainput::DeviceId keyboardId = manager.CreateDevice<gainput::InputDeviceKeyboard>();
+	const gainput::DeviceId padId = manager.CreateDevice<gainput::InputDevicePad>();
+
+	gainput::InputMap map(manager);
+	map.MapBool(ButtonMenu, keyboardId, gainput::KeyEscape);
+	map.MapBool(ButtonConfirm, mouseId, gainput::MouseButtonLeft);
+	map.MapFloat(MouseX, mouseId, gainput::MouseAxisX);
+	map.MapFloat(MouseY, mouseId, gainput::MouseAxisY);
+	map.MapBool(ButtonConfirm, padId, gainput::PadButtonA);
+
+	manager.SetDisplaySize(width, height);
+
+	for (;;)
+	{
+		// Update Gainput
+		manager.Update();
+
+		XEvent event;
+		while (XPending(xDisplay))
+		{
+			XNextEvent(xDisplay, &event);
+			manager.HandleEvent(event);
+		}
+
+		// Check button states
+		if (map.GetBoolWasDown(ButtonMenu))
+		{
+			std::cout << "Open menu!!" << std::endl;
+		}
+		if (map.GetBoolWasDown(ButtonConfirm))
+		{
+			std::cout << "Confirmed!!" << std::endl;
+		}
+
+		if (map.GetFloatDelta(MouseX) != 0.0f || map.GetFloatDelta(MouseY) != 0.0f)
+		{
+			std::cout << "Mouse: " << map.GetFloat(MouseX) << ", " << map.GetFloat(MouseY) << std::endl;
+		}
+	}
+
+	XDestroyWindow(xDisplay, xWindow);
+	XCloseDisplay(xDisplay);
+
+	return 0;
+}
+#endif
+