Mouse interface via RawInput

Used when DirectInput is disabled/not available (DINPUT=n). Default in ARM32.

src/win/win.h

@@ -112,6 +112,9 @@ extern void	keyboard_handle(LPARAM lParam, int infocus);
 
 extern void     win_mouse_init(void);
 extern void     win_mouse_close(void);
+#ifndef USE_DINPUT
+extern void     win_mouse_handle(LPARAM lParam, int infocus);
+#endif
 
 extern LPARAM	win_get_string(int id);
 

src/win/win_mouse_rawinput.cpp

@@ -0,0 +1,139 @@
+/*
+ * 86Box	A hypervisor and IBM PC system emulator that specializes in
+ *  		running old operating systems and software designed for IBM
+ * 			PC systems and compatibles from 1981 through fairly recent
+ *  		system designs based on the PCI bus.
+ *
+ *  		This file is part of the 86Box distribution.
+ *
+ *  		RawInput mouse interface.
+ *
+ * 			Version:	@(#)win_mouse_rawinput.cpp	1.0.0	2019/3/19
+ *
+ *  		Authors:	Sarah Walker, <http://pcem-emulator.co.uk/>
+ *  					Miran Grca, <mgrca8@gmail.com>
+ *  					GH Cao, <driver1998.ms@outlook.com>
+ *
+ *  		Copyright 2008-2017 Sarah Walker.
+ *  		Copyright 2016,2017 Miran Grca.
+ *  		Copyright 2019 GH Cao.
+ */
+#include <windows.h>
+#include <windowsx.h>
+#include <stdio.h>
+#include <stdint.h>
+#include "../86box.h"
+#include "../mouse.h"
+#include "../plat.h"
+#include "win.h"
+
+int mouse_capture;
+
+typedef struct {
+	int buttons;
+	int dx;
+	int dy;
+} MOUSESTATE;
+
+MOUSESTATE mousestate;
+
+void
+win_mouse_init(void)
+{
+    atexit(win_mouse_close);
+
+    mouse_capture = 0;
+
+	/* Initialize the RawInput (mouse) module. */
+	RAWINPUTDEVICE ridev;
+	ridev.dwFlags = 0;
+	ridev.hwndTarget = NULL;
+	ridev.usUsagePage = 0x01;
+	ridev.usUsage = 0x02;
+	if (! RegisterRawInputDevices(&ridev, 1, sizeof(ridev)))
+		fatal("plat_mouse_init: RegisterRawInputDevices failed\n"); 
+
+	memset(&mousestate, 0, sizeof(MOUSESTATE));
+}
+
+void
+win_mouse_handle(LPARAM lParam, int infocus)
+{
+    uint32_t ri_size = 0;
+    UINT size;
+    RAWINPUT *raw;
+ 
+    if (! infocus) return;
+
+    GetRawInputData((HRAWINPUT)lParam, RID_INPUT, NULL,
+		    &size, sizeof(RAWINPUTHEADER));
+
+    raw = (RAWINPUT*)malloc(size);
+    if (raw == NULL) return;
+
+    /* Here we read the raw input data for the mouse */
+    ri_size = GetRawInputData((HRAWINPUT)(lParam), RID_INPUT,
+			      raw, &size, sizeof(RAWINPUTHEADER));
+    if (ri_size != size) return;
+
+    /* If the input is mouse, we process it */
+    if (raw->header.dwType == RIM_TYPEMOUSE) {
+		RAWMOUSE state = raw->data.mouse;
+
+		if (state.usButtonFlags & RI_MOUSE_LEFT_BUTTON_DOWN)
+			mousestate.buttons |= 1;
+		else if (state.usButtonFlags & RI_MOUSE_LEFT_BUTTON_UP)
+			mousestate.buttons &= ~1;
+		
+		if (state.usButtonFlags & RI_MOUSE_MIDDLE_BUTTON_DOWN)
+			mousestate.buttons |= 4;
+		else if (state.usButtonFlags & RI_MOUSE_MIDDLE_BUTTON_UP)
+			mousestate.buttons &= ~4;
+
+		if (state.usButtonFlags & RI_MOUSE_RIGHT_BUTTON_DOWN)
+			mousestate.buttons |= 2;
+		else if (state.usButtonFlags & RI_MOUSE_RIGHT_BUTTON_UP)
+			mousestate.buttons &= ~2;
+
+		static int x = 0, y = 0;
+		if (x != state.lLastX || y != state.lLastY) {
+			mousestate.dx += state.lLastX;
+			mousestate.dy += state.lLastY;	
+			x = state.lLastX;
+			y = state.lLastY;
+		}
+	}
+	free(raw);
+}
+
+void
+win_mouse_close(void)
+{
+	RAWINPUTDEVICE ridev;
+	ridev.dwFlags = RIDEV_REMOVE;
+	ridev.hwndTarget = NULL;
+	ridev.usUsagePage = 0x01;
+	ridev.usUsage = 0x02;
+	RegisterRawInputDevices(&ridev, 1, sizeof(ridev));
+}
+
+void
+mouse_poll(void)
+{
+    static int b = 0;
+    if (mouse_capture || video_fullscreen) {
+		if (mousestate.dx != 0 || mousestate.dy != 0) {
+			mouse_x += mousestate.dx;
+			mouse_y += mousestate.dy;
+			mouse_z = 0;
+
+			mousestate.dx=0;
+			mousestate.dy=0;
+		}
+
+		if (b != mousestate.buttons) {
+			mouse_buttons = mousestate.buttons;
+			b = mousestate.buttons;
+		}
+	}
+}

src/win/win_ui.c

@@ -1089,6 +1089,9 @@ input_proc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
     switch (message) {
 	case WM_INPUT:
 		keyboard_handle(lParam, infocus);
+#ifndef USE_DINPUT
+		win_mouse_handle(lParam, infocus);
+#endif
 		break;
 
 	case WM_SETFOCUS: