| 1 | /** @file
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| 2 | *
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| 3 | * VirtualBox X11 Additions mouse driver utility functions
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #include <iprt/assert.h>
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| 19 | #include <iprt/err.h>
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| 20 | #include <VBox/VMMDev.h>
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| 21 | #include <VBox/VBoxGuestLib.h>
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| 22 | #include "VBoxUtils.h"
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| 23 |
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| 24 | #include "xf86.h"
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| 25 | #define NEED_XF86_TYPES
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| 26 | #include <iprt/string.h>
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| 27 | #include "compiler.h"
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| 28 |
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| 29 | /**
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| 30 | * Have we ever failed to open the VBox device? This is an ugly hack
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| 31 | * to prevent the driver from being accessed when it is not open, as
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| 32 | * I can't see anywhere good to store additional information in the driver
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| 33 | * private data.
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| 34 | */
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| 35 | static Bool gDeviceOpenFailed = FALSE;
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| 36 |
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| 37 | int VBoxMouseInit(void)
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| 38 | {
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| 39 | int rc;
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| 40 | uint32_t fFeatures = 0;
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| 41 | if (gDeviceOpenFailed)
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| 42 | return 1;
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| 43 | rc = VbglR3Init();
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| 44 | if (RT_FAILURE(rc))
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| 45 | {
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| 46 | ErrorF("Failed to open the VirtualBox device, falling back to compatibility mouse mode.\n");
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| 47 | gDeviceOpenFailed = TRUE;
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| 48 | return 1;
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| 49 | }
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| 50 |
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| 51 | rc = VbglR3SetMouseStatus(VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE);
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| 52 | if (RT_FAILURE(rc))
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| 53 | {
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| 54 | ErrorF("Error sending mouse pointer capabilities to VMM! rc = %d (%s)\n",
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| 55 | errno, strerror(errno));
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| 56 | gDeviceOpenFailed = TRUE;
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| 57 | VbglR3Term();
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| 58 | return 1;
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| 59 | }
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| 60 | xf86Msg(X_INFO, "VirtualBox mouse pointer integration available.\n");
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| 61 | return 0;
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| 62 | }
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| 63 |
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| 64 |
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| 65 | /**
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| 66 | * Query the absolute mouse position from the host
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| 67 | * @returns VINF_SUCCESS or iprt error if the absolute values could not
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| 68 | * be queried, or the host wished to use relative coordinates
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| 69 | * @param pcx where to return the pointer X coordinate
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| 70 | * @param pxy where to return the pointer Y coordinate
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| 71 | */
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| 72 | int VBoxMouseQueryPosition(unsigned int *pcx, unsigned int *pcy)
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| 73 | {
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| 74 | int rc = VINF_SUCCESS;
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| 75 | uint32_t cx, cy, fFeatures;
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| 76 |
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| 77 | AssertPtrReturn(pcx, VERR_INVALID_PARAMETER);
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| 78 | AssertPtrReturn(pcy, VERR_INVALID_PARAMETER);
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| 79 | if (gDeviceOpenFailed)
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| 80 | rc = VERR_ACCESS_DENIED;
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| 81 | if (RT_SUCCESS(rc))
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| 82 | rc = VbglR3GetMouseStatus(&fFeatures, &cx, &cy);
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| 83 | if ( RT_SUCCESS(rc)
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| 84 | && !(fFeatures & VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE))
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| 85 | rc = VERR_NOT_SUPPORTED;
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| 86 | if (RT_SUCCESS(rc))
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| 87 | {
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| 88 | *pcx = cx;
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| 89 | *pcy = cy;
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| 90 | }
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| 91 | return rc;
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| 92 | }
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| 93 |
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| 94 |
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| 95 | int VBoxMouseFini(void)
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| 96 | {
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| 97 | VbglR3Term();
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| 98 | return VINF_SUCCESS;
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| 99 | }
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