502 lines
15 KiB
C
502 lines
15 KiB
C
/***********************************************************
|
|
|
|
Copyright 1987, 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.
|
|
|
|
Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the name of Digital not be
|
|
used in advertising or publicity pertaining to distribution of the
|
|
software without specific, written prior permission.
|
|
|
|
DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
|
|
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
|
|
DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
|
|
ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
|
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
|
|
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
|
SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
#ifdef HAVE_DIX_CONFIG_H
|
|
#include <dix-config.h>
|
|
#endif
|
|
|
|
#include <X11/X.h>
|
|
#include <X11/Xmd.h>
|
|
#include "servermd.h"
|
|
#include "scrnintstr.h"
|
|
#include "dixstruct.h"
|
|
#include "cursorstr.h"
|
|
#include "dixfontstr.h"
|
|
#include "opaque.h"
|
|
#include "inputstr.h"
|
|
#include "xace.h"
|
|
|
|
typedef struct _GlyphShare {
|
|
FontPtr font;
|
|
unsigned short sourceChar;
|
|
unsigned short maskChar;
|
|
CursorBitsPtr bits;
|
|
struct _GlyphShare *next;
|
|
} GlyphShare, *GlyphSharePtr;
|
|
|
|
static GlyphSharePtr sharedGlyphs = (GlyphSharePtr) NULL;
|
|
|
|
DevScreenPrivateKeyRec cursorScreenDevPriv;
|
|
|
|
static CARD32 cursorSerial;
|
|
|
|
static void
|
|
FreeCursorBits(CursorBitsPtr bits)
|
|
{
|
|
if (--bits->refcnt > 0)
|
|
return;
|
|
free(bits->source);
|
|
free(bits->mask);
|
|
#ifdef ARGB_CURSOR
|
|
free(bits->argb);
|
|
#endif
|
|
dixFiniPrivates(bits, PRIVATE_CURSOR_BITS);
|
|
if (bits->refcnt == 0) {
|
|
GlyphSharePtr *prev, this;
|
|
|
|
for (prev = &sharedGlyphs;
|
|
(this = *prev) && (this->bits != bits); prev = &this->next);
|
|
if (this) {
|
|
*prev = this->next;
|
|
CloseFont(this->font, (Font) 0);
|
|
free(this);
|
|
}
|
|
free(bits);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* To be called indirectly by DeleteResource; must use exactly two args.
|
|
*
|
|
* \param value must conform to DeleteType
|
|
*/
|
|
int
|
|
FreeCursor(pointer value, XID cid)
|
|
{
|
|
int nscr;
|
|
CursorPtr pCurs = (CursorPtr) value;
|
|
|
|
ScreenPtr pscr;
|
|
DeviceIntPtr pDev = NULL; /* unused anyway */
|
|
|
|
|
|
UnrefCursor(pCurs);
|
|
if (CursorRefCount(pCurs) != 0)
|
|
return Success;
|
|
|
|
BUG_WARN(CursorRefCount(pCurs) < 0);
|
|
|
|
for (nscr = 0; nscr < screenInfo.numScreens; nscr++) {
|
|
pscr = screenInfo.screens[nscr];
|
|
(void) (*pscr->UnrealizeCursor) (pDev, pscr, pCurs);
|
|
}
|
|
FreeCursorBits(pCurs->bits);
|
|
dixFiniPrivates(pCurs, PRIVATE_CURSOR);
|
|
free(pCurs);
|
|
return Success;
|
|
}
|
|
|
|
CursorPtr
|
|
RefCursor(CursorPtr cursor)
|
|
{
|
|
if (cursor)
|
|
cursor->refcnt++;
|
|
return cursor;
|
|
}
|
|
|
|
CursorPtr
|
|
UnrefCursor(CursorPtr cursor)
|
|
{
|
|
if (cursor)
|
|
cursor->refcnt--;
|
|
return cursor;
|
|
}
|
|
|
|
int
|
|
CursorRefCount(const CursorPtr cursor)
|
|
{
|
|
return cursor ? cursor->refcnt : 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* We check for empty cursors so that we won't have to display them
|
|
*/
|
|
static void
|
|
CheckForEmptyMask(CursorBitsPtr bits)
|
|
{
|
|
unsigned char *msk = bits->mask;
|
|
int n = BitmapBytePad(bits->width) * bits->height;
|
|
|
|
bits->emptyMask = FALSE;
|
|
while (n--)
|
|
if (*(msk++) != 0)
|
|
return;
|
|
#ifdef ARGB_CURSOR
|
|
if (bits->argb) {
|
|
CARD32 *argb = bits->argb;
|
|
|
|
n = bits->width * bits->height;
|
|
while (n--)
|
|
if (*argb++ & 0xff000000)
|
|
return;
|
|
}
|
|
#endif
|
|
bits->emptyMask = TRUE;
|
|
}
|
|
|
|
/**
|
|
* realize the cursor for every screen. Do not change the refcnt, this will be
|
|
* changed when ChangeToCursor actually changes the sprite.
|
|
*
|
|
* @return Success if all cursors realize on all screens, BadAlloc if realize
|
|
* failed for a device on a given screen.
|
|
*/
|
|
static int
|
|
RealizeCursorAllScreens(CursorPtr pCurs)
|
|
{
|
|
DeviceIntPtr pDev;
|
|
ScreenPtr pscr;
|
|
int nscr;
|
|
|
|
for (nscr = 0; nscr < screenInfo.numScreens; nscr++) {
|
|
pscr = screenInfo.screens[nscr];
|
|
for (pDev = inputInfo.devices; pDev; pDev = pDev->next) {
|
|
if (DevHasCursor(pDev)) {
|
|
if (!(*pscr->RealizeCursor) (pDev, pscr, pCurs)) {
|
|
/* Realize failed for device pDev on screen pscr.
|
|
* We have to assume that for all devices before, realize
|
|
* worked. We need to rollback all devices so far on the
|
|
* current screen and then all devices on previous
|
|
* screens.
|
|
*/
|
|
DeviceIntPtr pDevIt = inputInfo.devices; /*dev iterator */
|
|
|
|
while (pDevIt && pDevIt != pDev) {
|
|
if (DevHasCursor(pDevIt))
|
|
(*pscr->UnrealizeCursor) (pDevIt, pscr, pCurs);
|
|
pDevIt = pDevIt->next;
|
|
}
|
|
while (--nscr >= 0) {
|
|
pscr = screenInfo.screens[nscr];
|
|
/* now unrealize all devices on previous screens */
|
|
pDevIt = inputInfo.devices;
|
|
while (pDevIt) {
|
|
if (DevHasCursor(pDevIt))
|
|
(*pscr->UnrealizeCursor) (pDevIt, pscr, pCurs);
|
|
pDevIt = pDevIt->next;
|
|
}
|
|
(*pscr->UnrealizeCursor) (pDev, pscr, pCurs);
|
|
}
|
|
return BadAlloc;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return Success;
|
|
}
|
|
|
|
/**
|
|
* does nothing about the resource table, just creates the data structure.
|
|
* does not copy the src and mask bits
|
|
*
|
|
* \param psrcbits server-defined padding
|
|
* \param pmaskbits server-defined padding
|
|
* \param argb no padding
|
|
*/
|
|
int
|
|
AllocARGBCursor(unsigned char *psrcbits, unsigned char *pmaskbits,
|
|
CARD32 *argb, CursorMetricPtr cm,
|
|
unsigned foreRed, unsigned foreGreen, unsigned foreBlue,
|
|
unsigned backRed, unsigned backGreen, unsigned backBlue,
|
|
CursorPtr *ppCurs, ClientPtr client, XID cid)
|
|
{
|
|
CursorBitsPtr bits;
|
|
CursorPtr pCurs;
|
|
int rc;
|
|
|
|
*ppCurs = NULL;
|
|
pCurs = (CursorPtr) calloc(CURSOR_REC_SIZE + CURSOR_BITS_SIZE, 1);
|
|
if (!pCurs)
|
|
return BadAlloc;
|
|
|
|
bits = (CursorBitsPtr) ((char *) pCurs + CURSOR_REC_SIZE);
|
|
dixInitPrivates(pCurs, pCurs + 1, PRIVATE_CURSOR);
|
|
dixInitPrivates(bits, bits + 1, PRIVATE_CURSOR_BITS)
|
|
bits->source = psrcbits;
|
|
bits->mask = pmaskbits;
|
|
#ifdef ARGB_CURSOR
|
|
bits->argb = argb;
|
|
#endif
|
|
bits->width = cm->width;
|
|
bits->height = cm->height;
|
|
bits->xhot = cm->xhot;
|
|
bits->yhot = cm->yhot;
|
|
pCurs->refcnt = 1;
|
|
bits->refcnt = -1;
|
|
CheckForEmptyMask(bits);
|
|
pCurs->bits = bits;
|
|
pCurs->serialNumber = ++cursorSerial;
|
|
pCurs->name = None;
|
|
|
|
pCurs->foreRed = foreRed;
|
|
pCurs->foreGreen = foreGreen;
|
|
pCurs->foreBlue = foreBlue;
|
|
|
|
pCurs->backRed = backRed;
|
|
pCurs->backGreen = backGreen;
|
|
pCurs->backBlue = backBlue;
|
|
|
|
pCurs->id = cid;
|
|
|
|
/* security creation/labeling check */
|
|
rc = XaceHook(XACE_RESOURCE_ACCESS, client, cid, RT_CURSOR,
|
|
pCurs, RT_NONE, NULL, DixCreateAccess);
|
|
if (rc != Success)
|
|
goto error;
|
|
|
|
rc = RealizeCursorAllScreens(pCurs);
|
|
if (rc != Success)
|
|
goto error;
|
|
|
|
*ppCurs = pCurs;
|
|
return Success;
|
|
|
|
error:
|
|
FreeCursorBits(bits);
|
|
dixFiniPrivates(pCurs, PRIVATE_CURSOR);
|
|
free(pCurs);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
AllocGlyphCursor(Font source, unsigned sourceChar, Font mask, unsigned maskChar,
|
|
unsigned foreRed, unsigned foreGreen, unsigned foreBlue,
|
|
unsigned backRed, unsigned backGreen, unsigned backBlue,
|
|
CursorPtr *ppCurs, ClientPtr client, XID cid)
|
|
{
|
|
FontPtr sourcefont, maskfont;
|
|
unsigned char *srcbits;
|
|
unsigned char *mskbits;
|
|
CursorMetricRec cm;
|
|
int rc;
|
|
CursorBitsPtr bits;
|
|
CursorPtr pCurs;
|
|
GlyphSharePtr pShare;
|
|
|
|
rc = dixLookupResourceByType((pointer *) &sourcefont, source, RT_FONT,
|
|
client, DixUseAccess);
|
|
if (rc != Success) {
|
|
client->errorValue = source;
|
|
return rc;
|
|
}
|
|
rc = dixLookupResourceByType((pointer *) &maskfont, mask, RT_FONT, client,
|
|
DixUseAccess);
|
|
if (rc != Success && mask != None) {
|
|
client->errorValue = mask;
|
|
return rc;
|
|
}
|
|
if (sourcefont != maskfont)
|
|
pShare = (GlyphSharePtr) NULL;
|
|
else {
|
|
for (pShare = sharedGlyphs;
|
|
pShare &&
|
|
((pShare->font != sourcefont) ||
|
|
(pShare->sourceChar != sourceChar) ||
|
|
(pShare->maskChar != maskChar)); pShare = pShare->next);
|
|
}
|
|
if (pShare) {
|
|
pCurs = (CursorPtr) calloc(CURSOR_REC_SIZE, 1);
|
|
if (!pCurs)
|
|
return BadAlloc;
|
|
dixInitPrivates(pCurs, pCurs + 1, PRIVATE_CURSOR);
|
|
bits = pShare->bits;
|
|
bits->refcnt++;
|
|
}
|
|
else {
|
|
if (!CursorMetricsFromGlyph(sourcefont, sourceChar, &cm)) {
|
|
client->errorValue = sourceChar;
|
|
return BadValue;
|
|
}
|
|
if (!maskfont) {
|
|
long n;
|
|
unsigned char *mskptr;
|
|
|
|
n = BitmapBytePad(cm.width) * (long) cm.height;
|
|
mskptr = mskbits = malloc(n);
|
|
if (!mskptr)
|
|
return BadAlloc;
|
|
while (--n >= 0)
|
|
*mskptr++ = ~0;
|
|
}
|
|
else {
|
|
if (!CursorMetricsFromGlyph(maskfont, maskChar, &cm)) {
|
|
client->errorValue = maskChar;
|
|
return BadValue;
|
|
}
|
|
if ((rc = ServerBitsFromGlyph(maskfont, maskChar, &cm, &mskbits)))
|
|
return rc;
|
|
}
|
|
if ((rc = ServerBitsFromGlyph(sourcefont, sourceChar, &cm, &srcbits))) {
|
|
free(mskbits);
|
|
return rc;
|
|
}
|
|
if (sourcefont != maskfont) {
|
|
pCurs = (CursorPtr) calloc(CURSOR_REC_SIZE + CURSOR_BITS_SIZE, 1);
|
|
if (pCurs)
|
|
bits = (CursorBitsPtr) ((char *) pCurs + CURSOR_REC_SIZE);
|
|
else
|
|
bits = (CursorBitsPtr) NULL;
|
|
}
|
|
else {
|
|
pCurs = (CursorPtr) calloc(CURSOR_REC_SIZE, 1);
|
|
if (pCurs)
|
|
bits = (CursorBitsPtr) calloc(CURSOR_BITS_SIZE, 1);
|
|
else
|
|
bits = (CursorBitsPtr) NULL;
|
|
}
|
|
if (!bits) {
|
|
free(pCurs);
|
|
free(mskbits);
|
|
free(srcbits);
|
|
return BadAlloc;
|
|
}
|
|
dixInitPrivates(pCurs, pCurs + 1, PRIVATE_CURSOR);
|
|
dixInitPrivates(bits, bits + 1, PRIVATE_CURSOR_BITS);
|
|
bits->source = srcbits;
|
|
bits->mask = mskbits;
|
|
#ifdef ARGB_CURSOR
|
|
bits->argb = 0;
|
|
#endif
|
|
bits->width = cm.width;
|
|
bits->height = cm.height;
|
|
bits->xhot = cm.xhot;
|
|
bits->yhot = cm.yhot;
|
|
if (sourcefont != maskfont)
|
|
bits->refcnt = -1;
|
|
else {
|
|
bits->refcnt = 1;
|
|
pShare = malloc(sizeof(GlyphShare));
|
|
if (!pShare) {
|
|
FreeCursorBits(bits);
|
|
return BadAlloc;
|
|
}
|
|
pShare->font = sourcefont;
|
|
sourcefont->refcnt++;
|
|
pShare->sourceChar = sourceChar;
|
|
pShare->maskChar = maskChar;
|
|
pShare->bits = bits;
|
|
pShare->next = sharedGlyphs;
|
|
sharedGlyphs = pShare;
|
|
}
|
|
}
|
|
|
|
CheckForEmptyMask(bits);
|
|
pCurs->bits = bits;
|
|
pCurs->refcnt = 1;
|
|
pCurs->serialNumber = ++cursorSerial;
|
|
pCurs->name = None;
|
|
|
|
pCurs->foreRed = foreRed;
|
|
pCurs->foreGreen = foreGreen;
|
|
pCurs->foreBlue = foreBlue;
|
|
|
|
pCurs->backRed = backRed;
|
|
pCurs->backGreen = backGreen;
|
|
pCurs->backBlue = backBlue;
|
|
|
|
pCurs->id = cid;
|
|
|
|
/* security creation/labeling check */
|
|
rc = XaceHook(XACE_RESOURCE_ACCESS, client, cid, RT_CURSOR,
|
|
pCurs, RT_NONE, NULL, DixCreateAccess);
|
|
if (rc != Success)
|
|
goto error;
|
|
|
|
rc = RealizeCursorAllScreens(pCurs);
|
|
if (rc != Success)
|
|
goto error;
|
|
|
|
*ppCurs = pCurs;
|
|
return Success;
|
|
|
|
error:
|
|
FreeCursorBits(bits);
|
|
dixFiniPrivates(pCurs, PRIVATE_CURSOR);
|
|
free(pCurs);
|
|
|
|
return rc;
|
|
}
|
|
|
|
/** CreateRootCursor
|
|
*
|
|
* look up the name of a font
|
|
* open the font
|
|
* add the font to the resource table
|
|
* make a cursor from the glyphs
|
|
* add the cursor to the resource table
|
|
*************************************************************/
|
|
|
|
CursorPtr
|
|
CreateRootCursor(char *unused1, unsigned int unused2)
|
|
{
|
|
CursorPtr curs;
|
|
FontPtr cursorfont;
|
|
int err;
|
|
XID fontID;
|
|
|
|
fontID = FakeClientID(0);
|
|
err = OpenFont(serverClient, fontID, FontLoadAll | FontOpenSync,
|
|
(unsigned) strlen(defaultCursorFont), defaultCursorFont);
|
|
if (err != Success)
|
|
return NullCursor;
|
|
|
|
err = dixLookupResourceByType((pointer *) &cursorfont, fontID, RT_FONT,
|
|
serverClient, DixReadAccess);
|
|
if (err != Success)
|
|
return NullCursor;
|
|
if (AllocGlyphCursor(fontID, 0, fontID, 1, 0, 0, 0, ~0, ~0, ~0,
|
|
&curs, serverClient, (XID) 0) != Success)
|
|
return NullCursor;
|
|
|
|
if (!AddResource(FakeClientID(0), RT_CURSOR, (pointer) curs))
|
|
return NullCursor;
|
|
|
|
return curs;
|
|
}
|