1 | /* $Id: VBoxGuestR0LibMouse.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
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2 | /** @file
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3 | * VBoxGuestLibR0 - Mouse Integration.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2012-2020 Oracle Corporation
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8 | *
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9 | * Permission is hereby granted, free of charge, to any person
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10 | * obtaining a copy of this software and associated documentation
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11 | * files (the "Software"), to deal in the Software without
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12 | * restriction, including without limitation the rights to use,
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13 | * copy, modify, merge, publish, distribute, sublicense, and/or sell
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14 | * copies of the Software, and to permit persons to whom the
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15 | * Software is furnished to do so, subject to the following
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16 | * conditions:
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17 | *
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18 | * The above copyright notice and this permission notice shall be
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19 | * included in all copies or substantial portions of the Software.
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20 | *
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21 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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22 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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23 | * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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24 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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25 | * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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26 | * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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27 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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28 | * OTHER DEALINGS IN THE SOFTWARE.
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29 | */
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30 |
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31 |
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32 | /*********************************************************************************************************************************
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33 | * Header Files *
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34 | *********************************************************************************************************************************/
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35 | #include "VBoxGuestR0LibInternal.h"
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36 | #ifdef VBGL_VBOXGUEST
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37 | # error "This file shouldn't be part of the VBoxGuestR0LibBase library that is linked into VBoxGuest. It's client code."
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38 | #endif
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39 |
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40 |
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41 | /**
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42 | * Sets the function which is called back on each mouse pointer event. Only
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43 | * one callback can be active at once, so if you need several for any reason
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44 | * you must multiplex yourself. Call backs can be disabled by passing NULL
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45 | * as the function pointer.
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46 | *
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47 | * @remarks Ring-0.
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48 | * @returns iprt status code.
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49 | * @returns VERR_TRY_AGAIN if the main guest driver hasn't finished
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50 | * initialising.
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51 | *
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52 | * @param pfnNotify the function to call back. NULL to disable call backs.
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53 | * @param pvUser user supplied data/cookie to be passed to the function.
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54 | */
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55 | DECLR0VBGL(int) VbglR0SetMouseNotifyCallback(PFNVBOXGUESTMOUSENOTIFY pfnNotify, void *pvUser)
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56 | {
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57 | PVBGLIDCHANDLE pIdcHandle;
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58 | int rc = vbglR0QueryIdcHandle(&pIdcHandle);
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59 | if (RT_SUCCESS(rc))
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60 | {
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61 | VBGLIOCSETMOUSENOTIFYCALLBACK NotifyCallback;
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62 | VBGLREQHDR_INIT(&NotifyCallback.Hdr, SET_MOUSE_NOTIFY_CALLBACK);
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63 | NotifyCallback.u.In.pfnNotify = pfnNotify;
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64 | NotifyCallback.u.In.pvUser = pvUser;
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65 | rc = VbglR0IdcCall(pIdcHandle, VBGL_IOCTL_SET_MOUSE_NOTIFY_CALLBACK, &NotifyCallback.Hdr, sizeof(NotifyCallback));
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66 | }
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67 | return rc;
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68 | }
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69 |
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70 |
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71 | /**
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72 | * Retrieve mouse coordinates and features from the host.
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73 | *
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74 | * @remarks Ring-0.
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75 | * @returns VBox status code.
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76 | *
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77 | * @param pfFeatures Where to store the mouse features.
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78 | * @param px Where to store the X co-ordinate.
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79 | * @param py Where to store the Y co-ordinate.
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80 | */
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81 | DECLR0VBGL(int) VbglR0GetMouseStatus(uint32_t *pfFeatures, uint32_t *px, uint32_t *py)
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82 | {
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83 | PVBGLIDCHANDLE pIdcHandle;
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84 | int rc = vbglR0QueryIdcHandle(&pIdcHandle);
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85 | if (RT_SUCCESS(rc))
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86 | {
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87 | VMMDevReqMouseStatus Req;
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88 | VMMDEV_REQ_HDR_INIT(&Req.header, sizeof(Req), VMMDevReq_GetMouseStatus);
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89 | Req.mouseFeatures = 0;
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90 | Req.pointerXPos = 0;
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91 | Req.pointerYPos = 0;
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92 | rc = VbglR0IdcCall(pIdcHandle, VBGL_IOCTL_VMMDEV_REQUEST(sizeof(Req)), (PVBGLREQHDR)&Req.header, sizeof(Req));
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93 | if (RT_SUCCESS(rc))
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94 | {
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95 | if (pfFeatures)
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96 | *pfFeatures = Req.mouseFeatures;
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97 | if (px)
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98 | *px = Req.pointerXPos;
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99 | if (py)
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100 | *py = Req.pointerYPos;
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101 | }
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102 | }
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103 | return rc;
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104 | }
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105 |
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106 |
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107 | /**
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108 | * Send mouse features to the host.
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109 | *
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110 | * @remarks Ring-0.
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111 | * @returns VBox status code.
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112 | *
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113 | * @param fFeatures Supported mouse pointer features. The main guest driver
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114 | * will mediate different callers and show the host any
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115 | * feature enabled by any guest caller.
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116 | */
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117 | DECLR0VBGL(int) VbglR0SetMouseStatus(uint32_t fFeatures)
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118 | {
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119 | PVBGLIDCHANDLE pIdcHandle;
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120 | int rc = vbglR0QueryIdcHandle(&pIdcHandle);
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121 | if (RT_SUCCESS(rc))
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122 | {
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123 | VBGLIOCSETMOUSESTATUS Req;
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124 | VBGLREQHDR_INIT(&Req.Hdr, SET_MOUSE_STATUS);
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125 | Req.u.In.fStatus = fFeatures;
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126 | rc = VbglR0IdcCall(pIdcHandle, VBGL_IOCTL_SET_MOUSE_STATUS, &Req.Hdr, sizeof(Req));
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127 | }
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128 | return rc;
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129 | }
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130 |
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