mouse left & right click

Makefile

@@ -1,7 +1,7 @@
 VERSION=v0.1.0
 # CC := g++
 CC := clang++
-LFLAGS := -lX11 -lXrandr -lglfw -lGL
+LFLAGS := -lX11 -lXrandr -lXtst -lglfw -lGL
 LIBS := openvr/libopenvr_api.so
 SRC := src/*.cpp
 OUT := ./sinpin_vr

bindings/action_manifest.json

@@ -31,6 +31,16 @@
 			"requirement": "suggested",
 			"type": "boolean"
 		},
+		{
+			"name": "/actions/main/in/mouse_left",
+			"requirement": "suggested",
+			"type": "boolean"
+		},
+		{
+			"name": "/actions/main/in/mouse_right",
+			"requirement": "suggested",
+			"type": "boolean"
+		},
 		{
 			"name": "/actions/main/in/distance",
 			"requirement": "suggested",
@@ -52,6 +62,8 @@
 			"/actions/main/in/grab": "grab panel",
 			"/actions/main/in/activate_cursor": "activate cursor",
 			"/actions/main/in/distance": "move away",
+			"/actions/main/in/mouse_left": "mouse left",
+			"/actions/main/in/mouse_right": "mouse right",
 			"/actions/main/in/reset": "reset positions"
 		}
 	]

src/app.cpp

@@ -2,6 +2,7 @@
 #include "controller.h"
 #include "util.h"
 #include <X11/Xlib.h>
+#include <X11/extensions/XTest.h>
 #include <X11/extensions/Xrandr.h>
 #include <cassert>
 #include <glm/matrix.hpp>
@@ -64,6 +65,10 @@ App::App()
 		assert(action_err == 0);
 		action_err = vr_input->GetActionHandle("/actions/main/in/distance", &_input_handles.distance);
 		assert(action_err == 0);
+		action_err = vr_input->GetActionHandle("/actions/main/in/mouse_left", &_input_handles.mouse_left);
+		assert(action_err == 0);
+		action_err = vr_input->GetActionHandle("/actions/main/in/mouse_right", &_input_handles.mouse_right);
+		assert(action_err == 0);
 		action_err = vr_input->GetActionSetHandle("/actions/main", &_input_handles.set);
 		assert(action_err == 0);
 	}
@@ -292,3 +297,8 @@ void App::SetCursor(int x, int y)
 	// I don't know what the return value of XWarpPointer means, it seems to be 1 on success.
 	XWarpPointer(_xdisplay, _root_window, _root_window, 0, 0, _root_width, _root_height, x, y);
 }
+
+void App::SendMouseInput(unsigned int button, bool state)
+{
+	XTestFakeButtonEvent(_xdisplay, button, state, 0);
+}

src/app.h

@@ -23,6 +23,8 @@ struct InputHandles
 	vr::VRActionHandle_t distance;
 	vr::VRActionHandle_t grab;
 	vr::VRActionHandle_t activate_cursor;
+	vr::VRActionHandle_t mouse_left;
+	vr::VRActionHandle_t mouse_right;
 	vr::VRActionHandle_t edit_mode;
 	vr::VRActionHandle_t reset;
 };
@@ -43,6 +45,7 @@ class App
 
 	Ray IntersectRay(glm::vec3 origin, glm::vec3 direction, float max_len);
 	void SetCursor(int x, int y);
+	void SendMouseInput(unsigned int button, bool state);
 
 	Display *_xdisplay;
 	Window _root_window;

src/controller.cpp

@@ -135,6 +135,16 @@ void Controller::Update()
 				pos *= _last_ray.hit_panel->Width();
 				_last_ray.hit_panel->SetCursor(pos.x, pos.y);
 			}
+			auto mouse_left = _app->GetInputDigital(_app->_input_handles.mouse_left, _input_handle);
+			if (mouse_left.bChanged)
+			{
+				_app->SendMouseInput(1, mouse_left.bState);
+			}
+			auto mouse_right = _app->GetInputDigital(_app->_input_handles.mouse_right, _input_handle);
+			if (mouse_right.bChanged)
+			{
+				_app->SendMouseInput(3, mouse_right.bState);
+			}
 		}
 	}
 }