499 lines
12 KiB
C
499 lines
12 KiB
C
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/*
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* mipointer.c
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*/
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/* $Xorg: mipointer.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */
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/*
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Copyright 1989, 1998 The Open Group
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Permission to use, copy, modify, distribute, and sell this software and its
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documentation for any purpose is hereby granted without fee, provided that
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the above copyright notice appear in all copies and that both that
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copyright notice and this permission notice appear in supporting
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documentation.
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of The Open Group shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from The Open Group.
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*/
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# define NEED_EVENTS
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# include "X.h"
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# include "Xmd.h"
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# include "Xproto.h"
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# include "misc.h"
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# include "windowstr.h"
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# include "pixmapstr.h"
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# include "mi.h"
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# include "scrnintstr.h"
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# include "mipointrst.h"
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# include "cursorstr.h"
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# include "dixstruct.h"
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static int miPointerScreenIndex;
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static unsigned long miPointerGeneration = 0;
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#define GetScreenPrivate(s) ((miPointerScreenPtr) ((s)->devPrivates[miPointerScreenIndex].ptr))
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#define SetupScreen(s) miPointerScreenPtr pScreenPriv = GetScreenPrivate(s)
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/*
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* until more than one pointer device exists.
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*/
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static miPointerRec miPointer;
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static Bool miPointerRealizeCursor (), miPointerUnrealizeCursor ();
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static Bool miPointerDisplayCursor ();
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static void miPointerConstrainCursor (), miPointerPointerNonInterestBox();
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static void miPointerCursorLimits ();
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static Bool miPointerSetCursorPosition ();
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static Bool miPointerCloseScreen();
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static void miPointerMove ();
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Bool
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miPointerInitialize (pScreen, spriteFuncs, screenFuncs, waitForUpdate)
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ScreenPtr pScreen;
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miPointerSpriteFuncPtr spriteFuncs;
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miPointerScreenFuncPtr screenFuncs;
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Bool waitForUpdate;
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{
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miPointerScreenPtr pScreenPriv;
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if (miPointerGeneration != serverGeneration)
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{
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miPointerScreenIndex = AllocateScreenPrivateIndex();
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if (miPointerScreenIndex < 0)
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return FALSE;
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miPointerGeneration = serverGeneration;
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}
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pScreenPriv = (miPointerScreenPtr) xalloc (sizeof (miPointerScreenRec));
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if (!pScreenPriv)
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return FALSE;
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pScreenPriv->spriteFuncs = spriteFuncs;
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pScreenPriv->screenFuncs = screenFuncs;
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/*
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* check for uninitialized methods
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*/
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if (!screenFuncs->EnqueueEvent)
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screenFuncs->EnqueueEvent = mieqEnqueue;
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if (!screenFuncs->NewEventScreen)
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screenFuncs->NewEventScreen = mieqSwitchScreen;
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pScreenPriv->waitForUpdate = waitForUpdate;
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pScreenPriv->CloseScreen = pScreen->CloseScreen;
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pScreen->CloseScreen = miPointerCloseScreen;
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pScreen->devPrivates[miPointerScreenIndex].ptr = (pointer) pScreenPriv;
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/*
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* set up screen cursor method table
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*/
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pScreen->ConstrainCursor = miPointerConstrainCursor;
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pScreen->CursorLimits = miPointerCursorLimits;
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pScreen->DisplayCursor = miPointerDisplayCursor;
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pScreen->RealizeCursor = miPointerRealizeCursor;
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pScreen->UnrealizeCursor = miPointerUnrealizeCursor;
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pScreen->SetCursorPosition = miPointerSetCursorPosition;
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pScreen->RecolorCursor = miRecolorCursor;
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pScreen->PointerNonInterestBox = miPointerPointerNonInterestBox;
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/*
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* set up the pointer object
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*/
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miPointer.pScreen = NULL;
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miPointer.pSpriteScreen = NULL;
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miPointer.pCursor = NULL;
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miPointer.pSpriteCursor = NULL;
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miPointer.limits.x1 = 0;
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miPointer.limits.x2 = 32767;
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miPointer.limits.y1 = 0;
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miPointer.limits.y2 = 32767;
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miPointer.confined = FALSE;
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miPointer.x = 0;
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miPointer.y = 0;
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miPointer.history_start = miPointer.history_end = 0;
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return TRUE;
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}
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static Bool
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miPointerCloseScreen (index, pScreen)
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int index;
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ScreenPtr pScreen;
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{
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SetupScreen(pScreen);
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if (pScreen == miPointer.pScreen)
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miPointer.pScreen = 0;
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if (pScreen == miPointer.pSpriteScreen)
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miPointer.pSpriteScreen = 0;
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pScreen->CloseScreen = pScreenPriv->CloseScreen;
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xfree ((pointer) pScreenPriv);
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return (*pScreen->CloseScreen) (index, pScreen);
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}
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/*
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* DIX/DDX interface routines
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*/
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static Bool
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miPointerRealizeCursor (pScreen, pCursor)
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ScreenPtr pScreen;
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CursorPtr pCursor;
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{
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SetupScreen(pScreen);
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return (*pScreenPriv->spriteFuncs->RealizeCursor) (pScreen, pCursor);
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}
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static Bool
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miPointerUnrealizeCursor (pScreen, pCursor)
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ScreenPtr pScreen;
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CursorPtr pCursor;
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{
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SetupScreen(pScreen);
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return (*pScreenPriv->spriteFuncs->UnrealizeCursor) (pScreen, pCursor);
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}
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static Bool
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miPointerDisplayCursor (pScreen, pCursor)
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ScreenPtr pScreen;
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CursorPtr pCursor;
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{
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SetupScreen(pScreen);
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miPointer.pCursor = pCursor;
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miPointer.pScreen = pScreen;
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miPointerUpdate ();
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return TRUE;
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}
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static void
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miPointerConstrainCursor (pScreen, pBox)
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ScreenPtr pScreen;
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BoxPtr pBox;
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{
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miPointer.limits = *pBox;
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miPointer.confined = PointerConfinedToScreen();
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}
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/*ARGSUSED*/
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static void
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miPointerPointerNonInterestBox (pScreen, pBox)
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ScreenPtr pScreen;
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BoxPtr pBox;
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{
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/* until DIX uses this, this will remain a stub */
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}
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/*ARGSUSED*/
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static void
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miPointerCursorLimits(pScreen, pCursor, pHotBox, pTopLeftBox)
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ScreenPtr pScreen;
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CursorPtr pCursor;
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BoxPtr pHotBox;
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BoxPtr pTopLeftBox;
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{
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*pTopLeftBox = *pHotBox;
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}
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static Bool GenerateEvent;
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static Bool
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miPointerSetCursorPosition(pScreen, x, y, generateEvent)
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ScreenPtr pScreen;
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int x, y;
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Bool generateEvent;
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{
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SetupScreen (pScreen);
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GenerateEvent = generateEvent;
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/* device dependent - must pend signal and call miPointerWarpCursor */
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(*pScreenPriv->screenFuncs->WarpCursor) (pScreen, x, y);
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if (!generateEvent)
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miPointerUpdate();
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return TRUE;
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}
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/* Once signals are ignored, the WarpCursor function can call this */
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void
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miPointerWarpCursor (pScreen, x, y)
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ScreenPtr pScreen;
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int x, y;
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{
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SetupScreen (pScreen);
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if (miPointer.pScreen != pScreen)
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(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, TRUE);
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if (GenerateEvent)
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{
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miPointerMove (pScreen, x, y, GetTimeInMillis());
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}
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else
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{
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/* everything from miPointerMove except the event and history */
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if (!pScreenPriv->waitForUpdate && pScreen == miPointer.pSpriteScreen)
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{
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miPointer.devx = x;
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miPointer.devy = y;
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(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
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}
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miPointer.x = x;
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miPointer.y = y;
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miPointer.pScreen = pScreen;
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}
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}
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/*
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* Pointer/CursorDisplay interface routines
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*/
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int
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miPointerGetMotionBufferSize ()
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{
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return MOTION_SIZE;
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}
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int
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miPointerGetMotionEvents (pPtr, coords, start, stop, pScreen)
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DeviceIntPtr pPtr;
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xTimecoord *coords;
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unsigned long start, stop;
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ScreenPtr pScreen;
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{
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int i;
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int count = 0;
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miHistoryPtr h;
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for (i = miPointer.history_start; i != miPointer.history_end;)
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{
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h = &miPointer.history[i];
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if (h->event.time >= stop)
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break;
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if (h->event.time >= start)
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{
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*coords++ = h->event;
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count++;
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}
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if (++i == MOTION_SIZE) i = 0;
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}
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return count;
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}
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/*
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* miPointerUpdate
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*
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* Syncronize the sprite with the cursor - called from ProcessInputEvents
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*/
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void
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miPointerUpdate ()
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{
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ScreenPtr pScreen;
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miPointerScreenPtr pScreenPriv;
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int x, y, devx, devy;
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pScreen = miPointer.pScreen;
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x = miPointer.x;
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y = miPointer.y;
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devx = miPointer.devx;
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devy = miPointer.devy;
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if (!pScreen)
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return;
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pScreenPriv = GetScreenPrivate (pScreen);
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/*
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* if the cursor has switched screens, disable the sprite
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* on the old screen
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*/
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if (pScreen != miPointer.pSpriteScreen)
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{
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if (miPointer.pSpriteScreen)
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{
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miPointerScreenPtr pOldPriv;
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pOldPriv = GetScreenPrivate (miPointer.pSpriteScreen);
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if (miPointer.pCursor)
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{
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(*pOldPriv->spriteFuncs->SetCursor)
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(miPointer.pSpriteScreen, NullCursor, 0, 0);
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}
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(*pOldPriv->screenFuncs->CrossScreen) (miPointer.pSpriteScreen, FALSE);
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}
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(*pScreenPriv->screenFuncs->CrossScreen) (pScreen, TRUE);
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(*pScreenPriv->spriteFuncs->SetCursor)
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(pScreen, miPointer.pCursor, x, y);
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miPointer.devx = x;
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miPointer.devy = y;
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miPointer.pSpriteCursor = miPointer.pCursor;
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miPointer.pSpriteScreen = pScreen;
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}
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/*
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* if the cursor has changed, display the new one
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*/
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else if (miPointer.pCursor != miPointer.pSpriteCursor)
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{
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(*pScreenPriv->spriteFuncs->SetCursor)
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(pScreen, miPointer.pCursor, x, y);
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miPointer.devx = x;
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miPointer.devy = y;
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miPointer.pSpriteCursor = miPointer.pCursor;
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}
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else if (x != devx || y != devy)
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{
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miPointer.devx = x;
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miPointer.devy = y;
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(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
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}
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}
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/*
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* miPointerDeltaCursor. The pointer has moved dx,dy from it's previous
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* position.
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*/
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void
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miPointerDeltaCursor (dx, dy, time)
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int dx, dy;
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unsigned long time;
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{
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miPointerAbsoluteCursor (miPointer.x + dx, miPointer.y + dy, time);
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}
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/*
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* miPointerAbsoluteCursor. The pointer has moved to x,y
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*/
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void
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miPointerAbsoluteCursor (x, y, time)
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int x, y;
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unsigned long time;
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{
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miPointerScreenPtr pScreenPriv;
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ScreenPtr pScreen;
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ScreenPtr newScreen;
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pScreen = miPointer.pScreen;
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if (!pScreen)
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return; /* called before ready */
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if (x < 0 || x >= pScreen->width || y < 0 || y >= pScreen->height)
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{
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pScreenPriv = GetScreenPrivate (pScreen);
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if (!miPointer.confined)
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{
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newScreen = pScreen;
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(*pScreenPriv->screenFuncs->CursorOffScreen) (&newScreen, &x, &y);
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if (newScreen != pScreen)
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{
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pScreen = newScreen;
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(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, FALSE);
|
||
|
|
pScreenPriv = GetScreenPrivate (pScreen);
|
||
|
|
/* Smash the confine to the new screen */
|
||
|
|
miPointer.limits.x2 = pScreen->width;
|
||
|
|
miPointer.limits.y2 = pScreen->height;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
/*
|
||
|
|
* constrain the hot-spot to the current
|
||
|
|
* limits
|
||
|
|
*/
|
||
|
|
if (x < miPointer.limits.x1)
|
||
|
|
x = miPointer.limits.x1;
|
||
|
|
if (x >= miPointer.limits.x2)
|
||
|
|
x = miPointer.limits.x2 - 1;
|
||
|
|
if (y < miPointer.limits.y1)
|
||
|
|
y = miPointer.limits.y1;
|
||
|
|
if (y >= miPointer.limits.y2)
|
||
|
|
y = miPointer.limits.y2 - 1;
|
||
|
|
if (miPointer.x == x && miPointer.y == y && miPointer.pScreen == pScreen)
|
||
|
|
return;
|
||
|
|
miPointerMove (pScreen, x, y, time);
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
miPointerPosition (x, y)
|
||
|
|
int *x, *y;
|
||
|
|
{
|
||
|
|
*x = miPointer.x;
|
||
|
|
*y = miPointer.y;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* miPointerMove. The pointer has moved to x,y on current screen
|
||
|
|
*/
|
||
|
|
|
||
|
|
static void
|
||
|
|
miPointerMove (pScreen, x, y, time)
|
||
|
|
ScreenPtr pScreen;
|
||
|
|
int x, y;
|
||
|
|
unsigned long time;
|
||
|
|
{
|
||
|
|
SetupScreen(pScreen);
|
||
|
|
xEvent xE;
|
||
|
|
miHistoryPtr history;
|
||
|
|
int prev, end, start;
|
||
|
|
|
||
|
|
if (!pScreenPriv->waitForUpdate && pScreen == miPointer.pSpriteScreen)
|
||
|
|
{
|
||
|
|
miPointer.devx = x;
|
||
|
|
miPointer.devy = y;
|
||
|
|
(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
|
||
|
|
}
|
||
|
|
miPointer.x = x;
|
||
|
|
miPointer.y = y;
|
||
|
|
miPointer.pScreen = pScreen;
|
||
|
|
|
||
|
|
xE.u.u.type = MotionNotify;
|
||
|
|
xE.u.keyButtonPointer.rootX = x;
|
||
|
|
xE.u.keyButtonPointer.rootY = y;
|
||
|
|
xE.u.keyButtonPointer.time = time;
|
||
|
|
(*pScreenPriv->screenFuncs->EnqueueEvent) (&xE);
|
||
|
|
|
||
|
|
end = miPointer.history_end;
|
||
|
|
start = miPointer.history_start;
|
||
|
|
prev = end - 1;
|
||
|
|
if (end == 0)
|
||
|
|
prev = MOTION_SIZE - 1;
|
||
|
|
history = &miPointer.history[prev];
|
||
|
|
if (end == start || history->event.time != time)
|
||
|
|
{
|
||
|
|
history = &miPointer.history[end];
|
||
|
|
if (++end == MOTION_SIZE)
|
||
|
|
end = 0;
|
||
|
|
if (end == start)
|
||
|
|
{
|
||
|
|
start = end + 1;
|
||
|
|
if (start == MOTION_SIZE)
|
||
|
|
start = 0;
|
||
|
|
miPointer.history_start = start;
|
||
|
|
}
|
||
|
|
miPointer.history_end = end;
|
||
|
|
}
|
||
|
|
history->event.x = x;
|
||
|
|
history->event.y = y;
|
||
|
|
history->event.time = time;
|
||
|
|
history->pScreen = pScreen;
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
miRegisterPointerDevice (pScreen, pDevice)
|
||
|
|
ScreenPtr pScreen;
|
||
|
|
DevicePtr pDevice;
|
||
|
|
{
|
||
|
|
miPointer.pPointer = pDevice;
|
||
|
|
}
|