MouseImpl.cpp@ 47245

Last change on this file since 47245 was 47245, checked in by vboxsync, 12 years ago
Main/Mouse: updated multi-touch protocol for in-contact informatin.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 28.1 KB

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1	/* $Id: MouseImpl.cpp 47245 2013-07-19 08:01:57Z vboxsync $ */
2	/** @file
3	* VirtualBox COM class implementation
4	*/
5
6	/*
7	* Copyright (C) 2006-2012 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.215389.xyz. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18	#include <iprt/cpp/utils.h>
19
20	#include "MouseImpl.h"
21	#include "DisplayImpl.h"
22	#include "VMMDev.h"
23
24	#include "AutoCaller.h"
25	#include "Logging.h"
26
27	#include <VBox/vmm/pdmdrv.h>
28	#include <VBox/VMMDev.h>
29
30	#include <iprt/asm.h>
31
32	/** @name Mouse device capabilities bitfield
33	* @{ */
34	enum
35	{
36	/** The mouse device can do relative reporting */
37	MOUSE_DEVCAP_RELATIVE = 1,
38	/** The mouse device can do absolute reporting */
39	MOUSE_DEVCAP_ABSOLUTE = 2,
40	/** The mouse device can do absolute reporting */
41	MOUSE_DEVCAP_MULTI_TOUCH = 4
42	};
43	/** @} */
44
45
46	/**
47	* Mouse driver instance data.
48	*/
49	struct DRVMAINMOUSE
50	{
51	/** Pointer to the mouse object. */
52	Mouse *pMouse;
53	/** Pointer to the driver instance structure. */
54	PPDMDRVINS pDrvIns;
55	/** Pointer to the mouse port interface of the driver/device above us. */
56	PPDMIMOUSEPORT pUpPort;
57	/** Our mouse connector interface. */
58	PDMIMOUSECONNECTOR IConnector;
59	/** The capabilities of this device. */
60	uint32_t u32DevCaps;
61	};
62
63
64	// constructor / destructor
65	/////////////////////////////////////////////////////////////////////////////
66
67	Mouse::Mouse()
68	: mParent(NULL)
69	{
70	}
71
72	Mouse::~Mouse()
73	{
74	}
75
76
77	HRESULT Mouse::FinalConstruct()
78	{
79	RT_ZERO(mpDrv);
80	mcLastX = 0x8000;
81	mcLastY = 0x8000;
82	mfLastButtons = 0;
83	mfVMMDevGuestCaps = 0;
84	return BaseFinalConstruct();
85	}
86
87	void Mouse::FinalRelease()
88	{
89	uninit();
90	BaseFinalRelease();
91	}
92
93	// public methods only for internal purposes
94	/////////////////////////////////////////////////////////////////////////////
95
96	/**
97	* Initializes the mouse object.
98	*
99	* @returns COM result indicator
100	* @param parent handle of our parent object
101	*/
102	HRESULT Mouse::init (ConsoleMouseInterface *parent)
103	{
104	LogFlowThisFunc(("\n"));
105
106	ComAssertRet(parent, E_INVALIDARG);
107
108	/* Enclose the state transition NotReady->InInit->Ready */
109	AutoInitSpan autoInitSpan(this);
110	AssertReturn(autoInitSpan.isOk(), E_FAIL);
111
112	unconst(mParent) = parent;
113
114	unconst(mEventSource).createObject();
115	HRESULT rc = mEventSource->init(static_cast<IMouse*>(this));
116	AssertComRCReturnRC(rc);
117	mMouseEvent.init(mEventSource, VBoxEventType_OnGuestMouse,
118	0, 0, 0, 0, 0);
119
120	/* Confirm a successful initialization */
121	autoInitSpan.setSucceeded();
122
123	return S_OK;
124	}
125
126	/**
127	* Uninitializes the instance and sets the ready flag to FALSE.
128	* Called either from FinalRelease() or by the parent when it gets destroyed.
129	*/
130	void Mouse::uninit()
131	{
132	LogFlowThisFunc(("\n"));
133
134	/* Enclose the state transition Ready->InUninit->NotReady */
135	AutoUninitSpan autoUninitSpan(this);
136	if (autoUninitSpan.uninitDone())
137	return;
138
139	for (unsigned i = 0; i < MOUSE_MAX_DEVICES; ++i)
140	{
141	if (mpDrv[i])
142	mpDrv[i]->pMouse = NULL;
143	mpDrv[i] = NULL;
144	}
145
146	mMouseEvent.uninit();
147	unconst(mEventSource).setNull();
148	unconst(mParent) = NULL;
149	}
150
151
152	// IMouse properties
153	/////////////////////////////////////////////////////////////////////////////
154
155	/** Report the front-end's mouse handling capabilities to the VMM device and
156	* thus to the guest.
157	* @note all calls out of this object are made with no locks held! */
158	HRESULT Mouse::updateVMMDevMouseCaps(uint32_t fCapsAdded,
159	uint32_t fCapsRemoved)
160	{
161	VMMDevMouseInterface *pVMMDev = mParent->getVMMDevMouseInterface();
162	if (!pVMMDev)
163	return E_FAIL; /* No assertion, as the front-ends can send events
164	* at all sorts of inconvenient times. */
165	PPDMIVMMDEVPORT pVMMDevPort = pVMMDev->getVMMDevPort();
166	if (!pVMMDevPort)
167	return E_FAIL; /* same here */
168
169	int rc = pVMMDevPort->pfnUpdateMouseCapabilities(pVMMDevPort, fCapsAdded,
170	fCapsRemoved);
171	return RT_SUCCESS(rc) ? S_OK : E_FAIL;
172	}
173
174	/**
175	* Returns whether the currently active device portfolio can accept absolute
176	* mouse events.
177	*
178	* @returns COM status code
179	* @param absoluteSupported address of result variable
180	*/
181	STDMETHODIMP Mouse::COMGETTER(AbsoluteSupported) (BOOL *absoluteSupported)
182	{
183	if (!absoluteSupported)
184	return E_POINTER;
185
186	AutoCaller autoCaller(this);
187	if (FAILED(autoCaller.rc())) return autoCaller.rc();
188
189	*absoluteSupported = supportsAbs();
190	return S_OK;
191	}
192
193	/**
194	* Returns whether the currently active device portfolio can accept relative
195	* mouse events.
196	*
197	* @returns COM status code
198	* @param relativeSupported address of result variable
199	*/
200	STDMETHODIMP Mouse::COMGETTER(RelativeSupported) (BOOL *relativeSupported)
201	{
202	if (!relativeSupported)
203	return E_POINTER;
204
205	AutoCaller autoCaller(this);
206	if (FAILED(autoCaller.rc())) return autoCaller.rc();
207
208	*relativeSupported = supportsRel();
209	return S_OK;
210	}
211
212	/**
213	* Returns whether the currently active device portfolio can accept multi-touch
214	* mouse events.
215	*
216	* @returns COM status code
217	* @param multiTouchSupported address of result variable
218	*/
219	STDMETHODIMP Mouse::COMGETTER(MultiTouchSupported) (BOOL *multiTouchSupported)
220	{
221	if (!multiTouchSupported)
222	return E_POINTER;
223
224	AutoCaller autoCaller(this);
225	if (FAILED(autoCaller.rc())) return autoCaller.rc();
226
227	*multiTouchSupported = FALSE;
228	return S_OK;
229	}
230
231	/**
232	* Returns whether the guest can currently switch to drawing the mouse cursor
233	* itself if it is asked to by the front-end.
234	*
235	* @returns COM status code
236	* @param pfNeedsHostCursor address of result variable
237	*/
238	STDMETHODIMP Mouse::COMGETTER(NeedsHostCursor) (BOOL *pfNeedsHostCursor)
239	{
240	if (!pfNeedsHostCursor)
241	return E_POINTER;
242
243	AutoCaller autoCaller(this);
244	if (FAILED(autoCaller.rc())) return autoCaller.rc();
245
246	*pfNeedsHostCursor = guestNeedsHostCursor();
247	return S_OK;
248	}
249
250	// IMouse methods
251	/////////////////////////////////////////////////////////////////////////////
252
253	/** Converts a bitfield containing information about mouse buttons currently
254	* held down from the format used by the front-end to the format used by PDM
255	* and the emulated pointing devices. */
256	static uint32_t mouseButtonsToPDM(LONG buttonState)
257	{
258	uint32_t fButtons = 0;
259	if (buttonState & MouseButtonState_LeftButton)
260	fButtons \|= PDMIMOUSEPORT_BUTTON_LEFT;
261	if (buttonState & MouseButtonState_RightButton)
262	fButtons \|= PDMIMOUSEPORT_BUTTON_RIGHT;
263	if (buttonState & MouseButtonState_MiddleButton)
264	fButtons \|= PDMIMOUSEPORT_BUTTON_MIDDLE;
265	if (buttonState & MouseButtonState_XButton1)
266	fButtons \|= PDMIMOUSEPORT_BUTTON_X1;
267	if (buttonState & MouseButtonState_XButton2)
268	fButtons \|= PDMIMOUSEPORT_BUTTON_X2;
269	return fButtons;
270	}
271
272	STDMETHODIMP Mouse::COMGETTER(EventSource)(IEventSource ** aEventSource)
273	{
274	CheckComArgOutPointerValid(aEventSource);
275
276	AutoCaller autoCaller(this);
277	if (FAILED(autoCaller.rc())) return autoCaller.rc();
278
279	// no need to lock - lifetime constant
280	mEventSource.queryInterfaceTo(aEventSource);
281
282	return S_OK;
283	}
284
285	/**
286	* Send a relative pointer event to the relative device we deem most
287	* appropriate.
288	*
289	* @returns COM status code
290	*/
291	HRESULT Mouse::reportRelEventToMouseDev(int32_t dx, int32_t dy, int32_t dz,
292	int32_t dw, uint32_t fButtons)
293	{
294	if (dx \|\| dy \|\| dz \|\| dw \|\| fButtons != mfLastButtons)
295	{
296	PPDMIMOUSEPORT pUpPort = NULL;
297	{
298	AutoReadLock aLock(this COMMA_LOCKVAL_SRC_POS);
299
300	for (unsigned i = 0; !pUpPort && i < MOUSE_MAX_DEVICES; ++i)
301	{
302	if (mpDrv[i] && (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_RELATIVE))
303	pUpPort = mpDrv[i]->pUpPort;
304	}
305	}
306	if (!pUpPort)
307	return S_OK;
308
309	int vrc = pUpPort->pfnPutEvent(pUpPort, dx, dy, dz, dw, fButtons);
310
311	if (RT_FAILURE(vrc))
312	return setError(VBOX_E_IPRT_ERROR,
313	tr("Could not send the mouse event to the virtual mouse (%Rrc)"),
314	vrc);
315	mfLastButtons = fButtons;
316	}
317	return S_OK;
318	}
319
320
321	/**
322	* Send an absolute pointer event to the emulated absolute device we deem most
323	* appropriate.
324	*
325	* @returns COM status code
326	*/
327	HRESULT Mouse::reportAbsEventToMouseDev(int32_t x, int32_t y,
328	int32_t dz, int32_t dw, uint32_t fButtons)
329	{
330	if ( x < VMMDEV_MOUSE_RANGE_MIN
331	\|\| x > VMMDEV_MOUSE_RANGE_MAX)
332	return S_OK;
333	if ( y < VMMDEV_MOUSE_RANGE_MIN
334	\|\| y > VMMDEV_MOUSE_RANGE_MAX)
335	return S_OK;
336	if ( x != mcLastX \|\| y != mcLastY
337	\|\| dz \|\| dw \|\| fButtons != mfLastButtons)
338	{
339	PPDMIMOUSEPORT pUpPort = NULL;
340	{
341	AutoReadLock aLock(this COMMA_LOCKVAL_SRC_POS);
342
343	for (unsigned i = 0; !pUpPort && i < MOUSE_MAX_DEVICES; ++i)
344	{
345	if (mpDrv[i] && (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_ABSOLUTE))
346	pUpPort = mpDrv[i]->pUpPort;
347	}
348	}
349	if (!pUpPort)
350	return S_OK;
351
352	int vrc = pUpPort->pfnPutEventAbs(pUpPort, x, y, dz,
353	dw, fButtons);
354	if (RT_FAILURE(vrc))
355	return setError(VBOX_E_IPRT_ERROR,
356	tr("Could not send the mouse event to the virtual mouse (%Rrc)"),
357	vrc);
358	mfLastButtons = fButtons;
359
360	}
361	return S_OK;
362	}
363
364
365	/**
366	* Send a multi-touch event to the first enabled emulated multi-touch device.
367	*
368	* @returns COM status code
369	*/
370	HRESULT Mouse::reportMTEventToMouseDev(int32_t x, int32_t y,
371	uint32_t cContact, uint32_t fContact)
372	{
373	if ( x < VMMDEV_MOUSE_RANGE_MIN
374	\|\| x > VMMDEV_MOUSE_RANGE_MAX)
375	return S_OK;
376	if ( y < VMMDEV_MOUSE_RANGE_MIN
377	\|\| y > VMMDEV_MOUSE_RANGE_MAX)
378	return S_OK;
379	PPDMIMOUSEPORT pUpPort = NULL;
380	{
381	AutoReadLock aLock(this COMMA_LOCKVAL_SRC_POS);
382
383	for (unsigned i = 0; !pUpPort && i < MOUSE_MAX_DEVICES; ++i)
384	{
385	if ( mpDrv[i]
386	&& (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_MULTI_TOUCH))
387	pUpPort = mpDrv[i]->pUpPort;
388	}
389	}
390	if (!pUpPort)
391	return S_OK;
392
393	int vrc = pUpPort->pfnPutEventMT(pUpPort, x, y,
394	cContact, fContact);
395	if (RT_FAILURE(vrc))
396	return setError(VBOX_E_IPRT_ERROR,
397	tr("Could not send the touch event to the virtual device (%Rrc)"),
398	vrc);
399	return S_OK;
400	}
401
402
403	/**
404	* Send an absolute position event to the VMM device.
405	* @note all calls out of this object are made with no locks held!
406	*
407	* @returns COM status code
408	*/
409	HRESULT Mouse::reportAbsEventToVMMDev(int32_t x, int32_t y)
410	{
411	VMMDevMouseInterface *pVMMDev = mParent->getVMMDevMouseInterface();
412	ComAssertRet(pVMMDev, E_FAIL);
413	PPDMIVMMDEVPORT pVMMDevPort = pVMMDev->getVMMDevPort();
414	ComAssertRet(pVMMDevPort, E_FAIL);
415
416	if (x != mcLastX \|\| y != mcLastY)
417	{
418	int vrc = pVMMDevPort->pfnSetAbsoluteMouse(pVMMDevPort,
419	x, y);
420	if (RT_FAILURE(vrc))
421	return setError(VBOX_E_IPRT_ERROR,
422	tr("Could not send the mouse event to the virtual mouse (%Rrc)"),
423	vrc);
424	}
425	return S_OK;
426	}
427
428
429	/**
430	* Send an absolute pointer event to a pointing device (the VMM device if
431	* possible or whatever emulated absolute device seems best to us if not).
432	*
433	* @returns COM status code
434	*/
435	HRESULT Mouse::reportAbsEvent(int32_t x, int32_t y,
436	int32_t dz, int32_t dw, uint32_t fButtons,
437	bool fUsesVMMDevEvent)
438	{
439	HRESULT rc = S_OK;
440	/** If we are using the VMMDev to report absolute position but without
441	* VMMDev IRQ support then we need to send a small "jiggle" to the emulated
442	* relative mouse device to alert the guest to changes. */
443	LONG cJiggle = 0;
444
445	/*
446	* Send the absolute mouse position to the device.
447	*/
448	if (x != mcLastX \|\| y != mcLastY)
449	{
450	if (vmmdevCanAbs())
451	{
452	rc = reportAbsEventToVMMDev(x, y);
453	cJiggle = !fUsesVMMDevEvent;
454	}
455	else
456	{
457	rc = reportAbsEventToMouseDev(x, y, 0, 0, fButtons);
458	fButtons = 0;
459	}
460	}
461	if (SUCCEEDED(rc))
462	rc = reportRelEventToMouseDev(cJiggle, 0, dz, dw, fButtons);
463
464	mcLastX = x;
465	mcLastY = y;
466	return rc;
467	}
468
469	void Mouse::fireMouseEvent(bool fAbsolute, LONG x, LONG y, LONG dz, LONG dw,
470	LONG cContact, LONG fButtons)
471	{
472	/* If mouse button is pressed, we generate new event, to avoid reusable events coalescing and thus
473	dropping key press events */
474	if (fButtons != 0)
475	{
476	VBoxEventDesc evDesc;
477	evDesc.init(mEventSource, VBoxEventType_OnGuestMouse, fAbsolute, x, y,
478	dz, dw, cContact, fButtons);
479	evDesc.fire(0);
480	}
481	else
482	{
483	mMouseEvent.reinit(VBoxEventType_OnGuestMouse, fAbsolute, x, y, dz, dw,
484	cContact, fButtons);
485	mMouseEvent.fire(0);
486	}
487	}
488
489
490	/**
491	* Send a relative mouse event to the guest.
492	* @note the VMMDev capability change is so that the guest knows we are sending
493	* real events over the PS/2 device and not dummy events to signal the
494	* arrival of new absolute pointer data
495	*
496	* @returns COM status code
497	* @param dx X movement
498	* @param dy Y movement
499	* @param dz Z movement
500	* @param fButtons The mouse button state
501	*/
502	STDMETHODIMP Mouse::PutMouseEvent(LONG dx, LONG dy, LONG dz, LONG dw,
503	LONG fButtons)
504	{
505	HRESULT rc;
506	uint32_t fButtonsAdj;
507
508	AutoCaller autoCaller(this);
509	if (FAILED(autoCaller.rc())) return autoCaller.rc();
510	LogRel3(("%s: dx=%d, dy=%d, dz=%d, dw=%d\n", __PRETTY_FUNCTION__,
511	dx, dy, dz, dw));
512
513	fButtonsAdj = mouseButtonsToPDM(fButtons);
514	/* Make sure that the guest knows that we are sending real movement
515	* events to the PS/2 device and not just dummy wake-up ones. */
516	updateVMMDevMouseCaps(0, VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE);
517	rc = reportRelEventToMouseDev(dx, dy, dz, dw, fButtonsAdj);
518
519	fireMouseEvent(false, dx, dy, dz, dw, 0, fButtons);
520
521	return rc;
522	}
523
524	/**
525	* Convert an (X, Y) value pair in screen co-ordinates (starting from 1) to a
526	* value from VMMDEV_MOUSE_RANGE_MIN to VMMDEV_MOUSE_RANGE_MAX. Sets the
527	* optional validity value to false if the pair is not on an active screen and
528	* to true otherwise.
529	* @note since guests with recent versions of X.Org use a different method
530	* to everyone else to map the valuator value to a screen pixel (they
531	* multiply by the screen dimension, do a floating point divide by
532	* the valuator maximum and round the result, while everyone else
533	* does truncating integer operations) we adjust the value we send
534	* so that it maps to the right pixel both when the result is rounded
535	* and when it is truncated.
536	*
537	* @returns COM status value
538	*/
539	HRESULT Mouse::convertDisplayRes(LONG x, LONG y, int32_t pxAdj, int32_t pyAdj,
540	bool *pfValid)
541	{
542	AssertPtrReturn(pxAdj, E_POINTER);
543	AssertPtrReturn(pyAdj, E_POINTER);
544	AssertPtrNullReturn(pfValid, E_POINTER);
545	DisplayMouseInterface *pDisplay = mParent->getDisplayMouseInterface();
546	ComAssertRet(pDisplay, E_FAIL);
547	/** The amount to add to the result (multiplied by the screen width/height)
548	* to compensate for differences in guest methods for mapping back to
549	* pixels */
550	enum { ADJUST_RANGE = - 3 * VMMDEV_MOUSE_RANGE / 4 };
551
552	if (pfValid)
553	*pfValid = true;
554	if (!(mfVMMDevGuestCaps & VMMDEV_MOUSE_NEW_PROTOCOL))
555	{
556	ULONG displayWidth, displayHeight;
557	/* Takes the display lock */
558	HRESULT rc = pDisplay->getScreenResolution(0, &displayWidth,
559	&displayHeight, NULL);
560	if (FAILED(rc))
561	return rc;
562
563	pxAdj = displayWidth ? (x VMMDEV_MOUSE_RANGE + ADJUST_RANGE)
564	/ (LONG) displayWidth: 0;
565	pyAdj = displayHeight ? (y VMMDEV_MOUSE_RANGE + ADJUST_RANGE)
566	/ (LONG) displayHeight: 0;
567	}
568	else
569	{
570	int32_t x1, y1, x2, y2;
571	/* Takes the display lock */
572	pDisplay->getFramebufferDimensions(&x1, &y1, &x2, &y2);
573	pxAdj = x1 < x2 ? ((x - x1) VMMDEV_MOUSE_RANGE + ADJUST_RANGE)
574	/ (x2 - x1) : 0;
575	pyAdj = y1 < y2 ? ((y - y1) VMMDEV_MOUSE_RANGE + ADJUST_RANGE)
576	/ (y2 - y1) : 0;
577	if ( *pxAdj < VMMDEV_MOUSE_RANGE_MIN
578	\|\| *pxAdj > VMMDEV_MOUSE_RANGE_MAX
579	\|\| *pyAdj < VMMDEV_MOUSE_RANGE_MIN
580	\|\| *pyAdj > VMMDEV_MOUSE_RANGE_MAX)
581	if (pfValid)
582	*pfValid = false;
583	}
584	return S_OK;
585	}
586
587
588	/**
589	* Send an absolute mouse event to the VM. This requires either VirtualBox-
590	* specific drivers installed in the guest or absolute pointing device
591	* emulation.
592	* @note the VMMDev capability change is so that the guest knows we are sending
593	* dummy events over the PS/2 device to signal the arrival of new
594	* absolute pointer data, and not pointer real movement data
595	* @note all calls out of this object are made with no locks held!
596	*
597	* @returns COM status code
598	* @param x X position (pixel), starting from 1
599	* @param y Y position (pixel), starting from 1
600	* @param dz Z movement
601	* @param fButtons The mouse button state
602	*/
603	STDMETHODIMP Mouse::PutMouseEventAbsolute(LONG x, LONG y, LONG dz, LONG dw,
604	LONG fButtons)
605	{
606	AutoCaller autoCaller(this);
607	if (FAILED(autoCaller.rc())) return autoCaller.rc();
608
609	LogRel3(("%s: x=%d, y=%d, dz=%d, dw=%d, fButtons=0x%x\n",
610	__PRETTY_FUNCTION__, x, y, dz, dw, fButtons));
611
612	int32_t xAdj, yAdj;
613	uint32_t fButtonsAdj;
614	bool fValid;
615
616	/** @todo the front end should do this conversion to avoid races */
617	/** @note Or maybe not... races are pretty inherent in everything done in
618	* this object and not really bad as far as I can see. */
619	HRESULT rc = convertDisplayRes(x, y, &xAdj, &yAdj, &fValid);
620	if (FAILED(rc)) return rc;
621
622	fButtonsAdj = mouseButtonsToPDM(fButtons);
623	/* If we are doing old-style (IRQ-less) absolute reporting to the VMM
624	* device then make sure the guest is aware of it, so that it knows to
625	* ignore relative movement on the PS/2 device. */
626	updateVMMDevMouseCaps(VMMDEV_MOUSE_HOST_WANTS_ABSOLUTE, 0);
627	if (fValid)
628	{
629	rc = reportAbsEvent(xAdj, yAdj, dz, dw, fButtonsAdj,
630	RT_BOOL( mfVMMDevGuestCaps
631	& VMMDEV_MOUSE_NEW_PROTOCOL));
632
633	fireMouseEvent(true, x, y, dz, dw, 0, fButtons);
634	}
635
636	return rc;
637	}
638
639	/**
640	* @interface_method_impl{IMouse,putMouseEventMultiTouch}
641	*/
642	STDMETHODIMP Mouse::PutMouseEventMultiTouch(LONG x, LONG y, LONG cContact,
643	LONG contactState)
644	{
645	AutoCaller autoCaller(this);
646	if (FAILED(autoCaller.rc())) return autoCaller.rc();
647
648	LogRel3(("%s: x=%d, y=%d, cContact=%d, contactState=%d\n",
649	__PRETTY_FUNCTION__, x, y, cContact, contactState));
650
651	int32_t xAdj, yAdj;
652	bool fValid;
653
654	/** @todo the front end should do this conversion to avoid races */
655	/** @note Or maybe not... races are pretty inherent in everything done in
656	* this object and not really bad as far as I can see. */
657	HRESULT rc = convertDisplayRes(x, y, &xAdj, &yAdj, &fValid);
658	if (FAILED(rc)) return rc;
659
660	if (fValid)
661	{
662	rc = reportMTEventToMouseDev(xAdj, yAdj, cContact, contactState);
663
664	fireMouseEvent(true, x, y, 0, 0, cContact, contactState);
665	}
666
667	return rc;
668	}
669
670	// private methods
671	/////////////////////////////////////////////////////////////////////////////
672
673
674	/** Does the guest currently rely on the host to draw the mouse cursor or
675	* can it switch to doing it itself in software? */
676	bool Mouse::guestNeedsHostCursor(void)
677	{
678	return RT_BOOL(mfVMMDevGuestCaps & VMMDEV_MOUSE_GUEST_NEEDS_HOST_CURSOR);
679	}
680
681
682	/** Check what sort of reporting can be done using the devices currently
683	* enabled. Does not consider the VMM device. */
684	void Mouse::getDeviceCaps(bool pfAbs, bool pfRel, bool *pfMT)
685	{
686	bool fAbsDev = false;
687	bool fRelDev = false;
688	bool fMTDev = false;
689
690	AutoReadLock aLock(this COMMA_LOCKVAL_SRC_POS);
691
692	for (unsigned i = 0; i < MOUSE_MAX_DEVICES; ++i)
693	if (mpDrv[i])
694	{
695	if (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_ABSOLUTE)
696	fAbsDev = true;
697	if (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_RELATIVE)
698	fRelDev = true;
699	if (mpDrv[i]->u32DevCaps & MOUSE_DEVCAP_MULTI_TOUCH)
700	fMTDev = true;
701	}
702	if (pfAbs)
703	*pfAbs = fAbsDev;
704	if (pfRel)
705	*pfRel = fRelDev;
706	}
707
708
709	/** Does the VMM device currently support absolute reporting? */
710	bool Mouse::vmmdevCanAbs(void)
711	{
712	bool fRelDev;
713
714	getDeviceCaps(NULL, &fRelDev, NULL);
715	return (mfVMMDevGuestCaps & VMMDEV_MOUSE_GUEST_CAN_ABSOLUTE)
716	&& fRelDev;
717	}
718
719
720	/** Does the VMM device currently support absolute reporting? */
721	bool Mouse::deviceCanAbs(void)
722	{
723	bool fAbsDev;
724
725	getDeviceCaps(&fAbsDev, NULL, NULL);
726	return fAbsDev;
727	}
728
729
730	/** Can we currently send relative events to the guest? */
731	bool Mouse::supportsRel(void)
732	{
733	bool fRelDev;
734
735	getDeviceCaps(NULL, &fRelDev, NULL);
736	return fRelDev;
737	}
738
739
740	/** Can we currently send absolute events to the guest? */
741	bool Mouse::supportsAbs(void)
742	{
743	bool fAbsDev;
744
745	getDeviceCaps(&fAbsDev, NULL, NULL);
746	return fAbsDev \|\| vmmdevCanAbs();
747	}
748
749
750	/** Can we currently send absolute events to the guest? */
751	bool Mouse::supportsMT(void)
752	{
753	bool fMTDev;
754
755	getDeviceCaps(NULL, NULL, &fMTDev);
756	return fMTDev;
757	}
758
759
760	/** Check what sort of reporting can be done using the devices currently
761	* enabled (including the VMM device) and notify the guest and the front-end.
762	*/
763	void Mouse::sendMouseCapsNotifications(void)
764	{
765	bool fAbsDev, fRelDev, fMTDev, fCanAbs, fNeedsHostCursor;
766
767	{
768	AutoReadLock aLock(this COMMA_LOCKVAL_SRC_POS);
769
770	getDeviceCaps(&fAbsDev, &fRelDev, &fMTDev);
771	fCanAbs = supportsAbs();
772	fNeedsHostCursor = guestNeedsHostCursor();
773	}
774	if (fAbsDev)
775	updateVMMDevMouseCaps(VMMDEV_MOUSE_HOST_HAS_ABS_DEV, 0);
776	else
777	updateVMMDevMouseCaps(0, VMMDEV_MOUSE_HOST_HAS_ABS_DEV);
778	/** @todo this call takes the Console lock in order to update the cached
779	* callback data atomically. However I can't see any sign that the cached
780	* data is ever used again. */
781	mParent->onMouseCapabilityChange(fCanAbs, fRelDev, fMTDev, fNeedsHostCursor);
782	}
783
784
785	/**
786	* @interface_method_impl{PDMIMOUSECONNECTOR,pfnReportModes}
787	* A virtual device is notifying us about its current state and capabilities
788	*/
789	DECLCALLBACK(void) Mouse::mouseReportModes(PPDMIMOUSECONNECTOR pInterface, bool fRel, bool fAbs, bool fMT)
790	{
791	PDRVMAINMOUSE pDrv = RT_FROM_MEMBER(pInterface, DRVMAINMOUSE, IConnector);
792	if (fRel)
793	pDrv->u32DevCaps \|= MOUSE_DEVCAP_RELATIVE;
794	else
795	pDrv->u32DevCaps &= ~MOUSE_DEVCAP_RELATIVE;
796	if (fAbs)
797	pDrv->u32DevCaps \|= MOUSE_DEVCAP_ABSOLUTE;
798	else
799	pDrv->u32DevCaps &= ~MOUSE_DEVCAP_ABSOLUTE;
800	if (fMT)
801	pDrv->u32DevCaps \|= MOUSE_DEVCAP_MULTI_TOUCH;
802	else
803	pDrv->u32DevCaps &= ~MOUSE_DEVCAP_MULTI_TOUCH;
804
805	pDrv->pMouse->sendMouseCapsNotifications();
806	}
807
808
809	/**
810	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
811	*/
812	DECLCALLBACK(void ) Mouse::drvQueryInterface(PPDMIBASE pInterface, const char pszIID)
813	{
814	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
815	PDRVMAINMOUSE pDrv = PDMINS_2_DATA(pDrvIns, PDRVMAINMOUSE);
816
817	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
818	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIMOUSECONNECTOR, &pDrv->IConnector);
819	return NULL;
820	}
821
822
823	/**
824	* Destruct a mouse driver instance.
825	*
826	* @returns VBox status.
827	* @param pDrvIns The driver instance data.
828	*/
829	DECLCALLBACK(void) Mouse::drvDestruct(PPDMDRVINS pDrvIns)
830	{
831	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
832	PDRVMAINMOUSE pThis = PDMINS_2_DATA(pDrvIns, PDRVMAINMOUSE);
833	LogFlow(("Mouse::drvDestruct: iInstance=%d\n", pDrvIns->iInstance));
834
835	if (pThis->pMouse)
836	{
837	AutoWriteLock mouseLock(pThis->pMouse COMMA_LOCKVAL_SRC_POS);
838	for (unsigned cDev = 0; cDev < MOUSE_MAX_DEVICES; ++cDev)
839	if (pThis->pMouse->mpDrv[cDev] == pThis)
840	{
841	pThis->pMouse->mpDrv[cDev] = NULL;
842	break;
843	}
844	}
845	}
846
847
848	/**
849	* Construct a mouse driver instance.
850	*
851	* @copydoc FNPDMDRVCONSTRUCT
852	*/
853	DECLCALLBACK(int) Mouse::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
854	{
855	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
856	PDRVMAINMOUSE pThis = PDMINS_2_DATA(pDrvIns, PDRVMAINMOUSE);
857	LogFlow(("drvMainMouse_Construct: iInstance=%d\n", pDrvIns->iInstance));
858
859	/*
860	* Validate configuration.
861	*/
862	if (!CFGMR3AreValuesValid(pCfg, "Object\0"))
863	return VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES;
864	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
865	("Configuration error: Not possible to attach anything to this driver!\n"),
866	VERR_PDM_DRVINS_NO_ATTACH);
867
868	/*
869	* IBase.
870	*/
871	pDrvIns->IBase.pfnQueryInterface = Mouse::drvQueryInterface;
872
873	pThis->IConnector.pfnReportModes = Mouse::mouseReportModes;
874
875	/*
876	* Get the IMousePort interface of the above driver/device.
877	*/
878	pThis->pUpPort = (PPDMIMOUSEPORT)pDrvIns->pUpBase->pfnQueryInterface(pDrvIns->pUpBase, PDMIMOUSEPORT_IID);
879	if (!pThis->pUpPort)
880	{
881	AssertMsgFailed(("Configuration error: No mouse port interface above!\n"));
882	return VERR_PDM_MISSING_INTERFACE_ABOVE;
883	}
884
885	/*
886	* Get the Mouse object pointer and update the mpDrv member.
887	*/
888	void *pv;
889	int rc = CFGMR3QueryPtr(pCfg, "Object", &pv);
890	if (RT_FAILURE(rc))
891	{
892	AssertMsgFailed(("Configuration error: No/bad \"Object\" value! rc=%Rrc\n", rc));
893	return rc;
894	}
895	pThis->pMouse = (Mouse )pv; /* @todo Check this cast! */
896	unsigned cDev;
897	{
898	AutoReadLock mouseLock(pThis->pMouse COMMA_LOCKVAL_SRC_POS);
899
900	for (cDev = 0; cDev < MOUSE_MAX_DEVICES; ++cDev)
901	if (!pThis->pMouse->mpDrv[cDev])
902	{
903	pThis->pMouse->mpDrv[cDev] = pThis;
904	break;
905	}
906	}
907	if (cDev == MOUSE_MAX_DEVICES)
908	return VERR_NO_MORE_HANDLES;
909
910	return VINF_SUCCESS;
911	}
912
913
914	/**
915	* Main mouse driver registration record.
916	*/
917	const PDMDRVREG Mouse::DrvReg =
918	{
919	/* u32Version */
920	PDM_DRVREG_VERSION,
921	/* szName */
922	"MainMouse",
923	/* szRCMod */
924	"",
925	/* szR0Mod */
926	"",
927	/* pszDescription */
928	"Main mouse driver (Main as in the API).",
929	/* fFlags */
930	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
931	/* fClass. */
932	PDM_DRVREG_CLASS_MOUSE,
933	/* cMaxInstances */
934	~0U,
935	/* cbInstance */
936	sizeof(DRVMAINMOUSE),
937	/* pfnConstruct */
938	Mouse::drvConstruct,
939	/* pfnDestruct */
940	Mouse::drvDestruct,
941	/* pfnRelocate */
942	NULL,
943	/* pfnIOCtl */
944	NULL,
945	/* pfnPowerOn */
946	NULL,
947	/* pfnReset */
948	NULL,
949	/* pfnSuspend */
950	NULL,
951	/* pfnResume */
952	NULL,
953	/* pfnAttach */
954	NULL,
955	/* pfnDetach */
956	NULL,
957	/* pfnPowerOff */
958	NULL,
959	/* pfnSoftReset */
960	NULL,
961	/* u32EndVersion */
962	PDM_DRVREG_VERSION
963	};
964	/* vi: set tabstop=4 shiftwidth=4 expandtab: */

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source: vbox/trunk/src/VBox/Main/src-client/MouseImpl.cpp@ 47245

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