You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

528 lines
13 KiB

/*
* mipointer.c
*/
/*
Copyright 1989, 1998 The Open Group
Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
# include <X11/X.h>
# include <X11/Xmd.h>
# include <X11/Xproto.h>
# include "misc.h"
# include "windowstr.h"
# include "pixmapstr.h"
# include "mi.h"
# include "scrnintstr.h"
# include "mipointrst.h"
# include "cursorstr.h"
# include "dixstruct.h"
_X_EXPORT int miPointerScreenIndex;
static unsigned long miPointerGeneration = 0;
#define GetScreenPrivate(s) ((miPointerScreenPtr) ((s)->devPrivates[miPointerScreenIndex].ptr))
#define SetupScreen(s) miPointerScreenPtr pScreenPriv = GetScreenPrivate(s)
/*
* until more than one pointer device exists.
*/
static miPointerRec miPointer;
static Bool miPointerRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
static Bool miPointerUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor);
static Bool miPointerDisplayCursor(ScreenPtr pScreen, CursorPtr pCursor);
static void miPointerConstrainCursor(ScreenPtr pScreen, BoxPtr pBox);
static void miPointerPointerNonInterestBox(ScreenPtr pScreen, BoxPtr pBox);
static void miPointerCursorLimits(ScreenPtr pScreen, CursorPtr pCursor,
BoxPtr pHotBox, BoxPtr pTopLeftBox);
static Bool miPointerSetCursorPosition(ScreenPtr pScreen, int x, int y,
Bool generateEvent);
static Bool miPointerCloseScreen(int index, ScreenPtr pScreen);
static void miPointerMove(ScreenPtr pScreen, int x, int y, unsigned long time);
_X_EXPORT Bool
miPointerInitialize (pScreen, spriteFuncs, screenFuncs, waitForUpdate)
ScreenPtr pScreen;
const miPointerSpriteFuncRec * spriteFuncs;
miPointerScreenFuncPtr screenFuncs;
Bool waitForUpdate;
{
miPointerScreenPtr pScreenPriv;
if (miPointerGeneration != serverGeneration)
{
miPointerScreenIndex = AllocateScreenPrivateIndex();
if (miPointerScreenIndex < 0)
return FALSE;
miPointerGeneration = serverGeneration;
}
pScreenPriv = malloc(sizeof (miPointerScreenRec));
if (!pScreenPriv)
return FALSE;
pScreenPriv->spriteFuncs = spriteFuncs;
pScreenPriv->screenFuncs = screenFuncs;
/*
* check for uninitialized methods
*/
if (!screenFuncs->EnqueueEvent)
screenFuncs->EnqueueEvent = mieqEnqueue;
if (!screenFuncs->NewEventScreen)
screenFuncs->NewEventScreen = mieqSwitchScreen;
pScreenPriv->waitForUpdate = waitForUpdate;
pScreenPriv->showTransparent = FALSE;
pScreenPriv->CloseScreen = pScreen->CloseScreen;
pScreen->CloseScreen = miPointerCloseScreen;
pScreen->devPrivates[miPointerScreenIndex].ptr = (pointer) pScreenPriv;
/*
* set up screen cursor method table
*/
pScreen->ConstrainCursor = miPointerConstrainCursor;
pScreen->CursorLimits = miPointerCursorLimits;
pScreen->DisplayCursor = miPointerDisplayCursor;
pScreen->RealizeCursor = miPointerRealizeCursor;
pScreen->UnrealizeCursor = miPointerUnrealizeCursor;
pScreen->SetCursorPosition = miPointerSetCursorPosition;
pScreen->RecolorCursor = miRecolorCursor;
pScreen->PointerNonInterestBox = miPointerPointerNonInterestBox;
/*
* set up the pointer object
*/
miPointer.pScreen = NULL;
miPointer.pSpriteScreen = NULL;
miPointer.pCursor = NULL;
miPointer.pSpriteCursor = NULL;
miPointer.limits.x1 = 0;
miPointer.limits.x2 = 32767;
miPointer.limits.y1 = 0;
miPointer.limits.y2 = 32767;
miPointer.confined = FALSE;
miPointer.x = 0;
miPointer.y = 0;
miPointer.history_start = miPointer.history_end = 0;
return TRUE;
}
static Bool
miPointerCloseScreen (index, pScreen)
int index;
ScreenPtr pScreen;
{
SetupScreen(pScreen);
if (pScreen == miPointer.pScreen)
miPointer.pScreen = 0;
if (pScreen == miPointer.pSpriteScreen)
miPointer.pSpriteScreen = 0;
pScreen->CloseScreen = pScreenPriv->CloseScreen;
free((pointer) pScreenPriv);
return (*pScreen->CloseScreen) (index, pScreen);
}
/*
* DIX/DDX interface routines
*/
static Bool
miPointerRealizeCursor (pScreen, pCursor)
ScreenPtr pScreen;
CursorPtr pCursor;
{
SetupScreen(pScreen);
return (*pScreenPriv->spriteFuncs->RealizeCursor) (pScreen, pCursor);
}
static Bool
miPointerUnrealizeCursor (pScreen, pCursor)
ScreenPtr pScreen;
CursorPtr pCursor;
{
SetupScreen(pScreen);
return (*pScreenPriv->spriteFuncs->UnrealizeCursor) (pScreen, pCursor);
}
static Bool
miPointerDisplayCursor (pScreen, pCursor)
ScreenPtr pScreen;
CursorPtr pCursor;
{
miPointer.pCursor = pCursor;
miPointer.pScreen = pScreen;
miPointerUpdate ();
return TRUE;
}
static void
miPointerConstrainCursor (pScreen, pBox)
ScreenPtr pScreen;
BoxPtr pBox;
{
miPointer.limits = *pBox;
miPointer.confined = PointerConfinedToScreen();
}
/*ARGSUSED*/
static void
miPointerPointerNonInterestBox (pScreen, pBox)
ScreenPtr pScreen;
BoxPtr pBox;
{
/* until DIX uses this, this will remain a stub */
}
/*ARGSUSED*/
static void
miPointerCursorLimits(pScreen, pCursor, pHotBox, pTopLeftBox)
ScreenPtr pScreen;
CursorPtr pCursor;
BoxPtr pHotBox;
BoxPtr pTopLeftBox;
{
*pTopLeftBox = *pHotBox;
}
static Bool GenerateEvent;
static Bool
miPointerSetCursorPosition(pScreen, x, y, generateEvent)
ScreenPtr pScreen;
int x, y;
Bool generateEvent;
{
SetupScreen (pScreen);
GenerateEvent = generateEvent;
/* device dependent - must pend signal and call miPointerWarpCursor */
(*pScreenPriv->screenFuncs->WarpCursor) (pScreen, x, y);
if (!generateEvent)
miPointerUpdate();
return TRUE;
}
/* Once signals are ignored, the WarpCursor function can call this */
_X_EXPORT void
miPointerWarpCursor (pScreen, x, y)
ScreenPtr pScreen;
int x, y;
{
SetupScreen (pScreen);
if (miPointer.pScreen != pScreen)
(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, TRUE);
if (GenerateEvent)
{
miPointerMove (pScreen, x, y, GetTimeInMillis());
}
else
{
/* everything from miPointerMove except the event and history */
if (!pScreenPriv->waitForUpdate && pScreen == miPointer.pSpriteScreen)
{
miPointer.devx = x;
miPointer.devy = y;
if(!miPointer.pCursor->bits->emptyMask)
(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
}
miPointer.x = x;
miPointer.y = y;
miPointer.pScreen = pScreen;
}
}
/*
* Pointer/CursorDisplay interface routines
*/
_X_EXPORT int
miPointerGetMotionBufferSize ()
{
return MOTION_SIZE;
}
_X_EXPORT int
miPointerGetMotionEvents (pPtr, coords, start, stop, pScreen)
DeviceIntPtr pPtr;
xTimecoord *coords;
unsigned long start, stop;
ScreenPtr pScreen;
{
int i;
int count = 0;
miHistoryPtr h;
for (i = miPointer.history_start; i != miPointer.history_end;)
{
h = &miPointer.history[i];
if (h->event.time >= stop)
break;
if (h->event.time >= start)
{
*coords++ = h->event;
count++;
}
if (++i == MOTION_SIZE) i = 0;
}
return count;
}
/*
* miPointerUpdate
*
* Syncronize the sprite with the cursor - called from ProcessInputEvents
*/
void
miPointerUpdate ()
{
ScreenPtr pScreen;
miPointerScreenPtr pScreenPriv;
CursorPtr pCursor;
int x, y, devx, devy;
pScreen = miPointer.pScreen;
x = miPointer.x;
y = miPointer.y;
devx = miPointer.devx;
devy = miPointer.devy;
if (!pScreen)
return;
pScreenPriv = GetScreenPrivate (pScreen);
/*
* if the cursor has switched screens, disable the sprite
* on the old screen
*/
if (pScreen != miPointer.pSpriteScreen)
{
if (miPointer.pSpriteScreen)
{
miPointerScreenPtr pOldPriv;
pOldPriv = GetScreenPrivate (miPointer.pSpriteScreen);
if (miPointer.pCursor)
{
(*pOldPriv->spriteFuncs->SetCursor)
(miPointer.pSpriteScreen, NullCursor, 0, 0);
}
(*pOldPriv->screenFuncs->CrossScreen) (miPointer.pSpriteScreen, FALSE);
}
(*pScreenPriv->screenFuncs->CrossScreen) (pScreen, TRUE);
(*pScreenPriv->spriteFuncs->SetCursor)
(pScreen, miPointer.pCursor, x, y);
miPointer.devx = x;
miPointer.devy = y;
miPointer.pSpriteCursor = miPointer.pCursor;
miPointer.pSpriteScreen = pScreen;
}
/*
* if the cursor has changed, display the new one
*/
else if (miPointer.pCursor != miPointer.pSpriteCursor)
{
pCursor = miPointer.pCursor;
if (pCursor->bits->emptyMask && !pScreenPriv->showTransparent)
pCursor = NullCursor;
(*pScreenPriv->spriteFuncs->SetCursor) (pScreen, pCursor, x, y);
miPointer.devx = x;
miPointer.devy = y;
miPointer.pSpriteCursor = miPointer.pCursor;
}
else if (x != devx || y != devy)
{
miPointer.devx = x;
miPointer.devy = y;
if(!miPointer.pCursor->bits->emptyMask)
(*pScreenPriv->spriteFuncs->MoveCursor) (pScreen, x, y);
}
}
/*
* miPointerDeltaCursor. The pointer has moved dx,dy from it's previous
* position.
*/
void
miPointerDeltaCursor (dx, dy, time)
int dx, dy;
unsigned long time;
{
miPointerAbsoluteCursor (miPointer.x + dx, miPointer.y + dy, time);
}
void
miPointerSetNewScreen(int screen_no, int x, int y)
{
miPointerScreenPtr pScreenPriv;
ScreenPtr pScreen;
pScreen = screenInfo.screens[screen_no];
pScreenPriv = GetScreenPrivate (pScreen);
(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, FALSE);
NewCurrentScreen (pScreen, x, y);
miPointer.limits.x2 = pScreen->width;
miPointer.limits.y2 = pScreen->height;
}
_X_EXPORT ScreenPtr
miPointerCurrentScreen ()
{
return (miPointer.pScreen);
}
/*
* miPointerAbsoluteCursor. The pointer has moved to x,y
*/
_X_EXPORT void
miPointerAbsoluteCursor (x, y, time)
int x, y;
unsigned long time;
{
miPointerScreenPtr pScreenPriv;
ScreenPtr pScreen;
ScreenPtr newScreen;
pScreen = miPointer.pScreen;
if (!pScreen)
return; /* called before ready */
if (x < 0 || x >= pScreen->width || y < 0 || y >= pScreen->height)
{
pScreenPriv = GetScreenPrivate (pScreen);
if (!miPointer.confined)
{
newScreen = pScreen;
(*pScreenPriv->screenFuncs->CursorOffScreen) (&newScreen, &x, &y);
if (newScreen != pScreen)
{
pScreen = newScreen;
(*pScreenPriv->screenFuncs->NewEventScreen) (pScreen, FALSE);
/* 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);
}
_X_EXPORT 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;
if(!miPointer.pCursor->bits->emptyMask)
(*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;
DeviceIntPtr pDevice;
{
miPointer.pPointer = (DevicePtr)pDevice;
}