diff options
Diffstat (limited to 'nx-X11/programs/Xserver/dix/cursor.c')
| -rw-r--r-- | nx-X11/programs/Xserver/dix/cursor.c | 459 |
1 files changed, 459 insertions, 0 deletions
diff --git a/nx-X11/programs/Xserver/dix/cursor.c b/nx-X11/programs/Xserver/dix/cursor.c new file mode 100644 index 000000000..f4d6c6419 --- /dev/null +++ b/nx-X11/programs/Xserver/dix/cursor.c @@ -0,0 +1,459 @@ +/* $XFree86: xc/programs/Xserver/dix/cursor.c,v 3.8 2003/01/12 02:44:26 dawes Exp $ */ +/*********************************************************** + +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. + +******************************************************************/ + + +/* $Xorg: cursor.c,v 1.4 2001/02/09 02:04:39 xorgcvs Exp $ */ + +#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" + +typedef struct _GlyphShare { + FontPtr font; + unsigned short sourceChar; + unsigned short maskChar; + CursorBitsPtr bits; + struct _GlyphShare *next; +} GlyphShare, *GlyphSharePtr; + +static GlyphSharePtr sharedGlyphs = (GlyphSharePtr)NULL; + +#ifdef XFIXES +static CARD32 cursorSerial; +#endif + +static void +FreeCursorBits(CursorBitsPtr bits) +{ + if (--bits->refcnt > 0) + return; + xfree(bits->source); + xfree(bits->mask); +#ifdef ARGB_CURSOR + xfree(bits->argb); +#endif + if (bits->refcnt == 0) + { + register GlyphSharePtr *prev, this; + + for (prev = &sharedGlyphs; + (this = *prev) && (this->bits != bits); + prev = &this->next) + ; + if (this) + { + *prev = this->next; + CloseFont(this->font, (Font)0); + xfree(this); + } + xfree(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; + + if ( --pCurs->refcnt > 0) + return(Success); + + for (nscr = 0; nscr < screenInfo.numScreens; nscr++) + { + pscr = screenInfo.screens[nscr]; + (void)( *pscr->UnrealizeCursor)( pscr, pCurs); + } + FreeCursorBits(pCurs->bits); + xfree( pCurs); + return(Success); +} + + +/* + * We check for empty cursors so that we won't have to display them + */ +static void +CheckForEmptyMask(CursorBitsPtr bits) +{ + register 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; + int n = bits->width * bits->height; + while (n--) + if (*argb++ & 0xff000000) return; + } +#endif + bits->emptyMask = TRUE; +} + +/** + * 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 + */ +CursorPtr +AllocCursorARGB(unsigned char *psrcbits, unsigned char *pmaskbits, CARD32 *argb, + CursorMetricPtr cm, + unsigned foreRed, unsigned foreGreen, unsigned foreBlue, + unsigned backRed, unsigned backGreen, unsigned backBlue) +{ + CursorBitsPtr bits; + CursorPtr pCurs; + int nscr; + ScreenPtr pscr; + + pCurs = (CursorPtr)xalloc(sizeof(CursorRec) + sizeof(CursorBits)); + if (!pCurs) + { + xfree(psrcbits); + xfree(pmaskbits); + return (CursorPtr)NULL; + } + bits = (CursorBitsPtr)((char *)pCurs + sizeof(CursorRec)); + 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; + bits->refcnt = -1; + CheckForEmptyMask(bits); + + pCurs->bits = bits; + pCurs->refcnt = 1; +#ifdef XFIXES + pCurs->serialNumber = ++cursorSerial; + pCurs->name = None; +#endif + + pCurs->foreRed = foreRed; + pCurs->foreGreen = foreGreen; + pCurs->foreBlue = foreBlue; + + pCurs->backRed = backRed; + pCurs->backGreen = backGreen; + pCurs->backBlue = backBlue; + + /* + * realize the cursor for every screen + */ + for (nscr = 0; nscr < screenInfo.numScreens; nscr++) + { + pscr = screenInfo.screens[nscr]; + if (!( *pscr->RealizeCursor)( pscr, pCurs)) + { + while (--nscr >= 0) + { + pscr = screenInfo.screens[nscr]; + ( *pscr->UnrealizeCursor)( pscr, pCurs); + } + FreeCursorBits(bits); + xfree(pCurs); + return (CursorPtr)NULL; + } + } + return pCurs; +} + +/** + * + * \param psrcbits server-defined padding + * \param pmaskbits server-defined padding + */ +CursorPtr +AllocCursor(unsigned char *psrcbits, unsigned char *pmaskbits, + CursorMetricPtr cm, + unsigned foreRed, unsigned foreGreen, unsigned foreBlue, + unsigned backRed, unsigned backGreen, unsigned backBlue) +{ + return AllocCursorARGB (psrcbits, pmaskbits, (CARD32 *) 0, cm, + foreRed, foreGreen, foreBlue, + backRed, backGreen, backBlue); +} + +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) +{ + FontPtr sourcefont, maskfont; + unsigned char *srcbits; + unsigned char *mskbits; + CursorMetricRec cm; + int res; + CursorBitsPtr bits; + CursorPtr pCurs; + int nscr; + ScreenPtr pscr; + GlyphSharePtr pShare; + + sourcefont = (FontPtr) SecurityLookupIDByType(client, source, RT_FONT, + SecurityReadAccess); + maskfont = (FontPtr) SecurityLookupIDByType(client, mask, RT_FONT, + SecurityReadAccess); + + if (!sourcefont) + { + client->errorValue = source; + return(BadFont); + } + if (!maskfont && (mask != None)) + { + client->errorValue = mask; + return(BadFont); + } + 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)xalloc(sizeof(CursorRec)); + if (!pCurs) + return BadAlloc; + bits = pShare->bits; + bits->refcnt++; + } + else + { + if (!CursorMetricsFromGlyph(sourcefont, sourceChar, &cm)) + { + client->errorValue = sourceChar; + return BadValue; + } + if (!maskfont) + { + register long n; + register unsigned char *mskptr; + + n = BitmapBytePad(cm.width)*(long)cm.height; + mskptr = mskbits = (unsigned char *)xalloc(n); + if (!mskptr) + return BadAlloc; + while (--n >= 0) + *mskptr++ = ~0; + } + else + { + if (!CursorMetricsFromGlyph(maskfont, maskChar, &cm)) + { + client->errorValue = maskChar; + return BadValue; + } + if ((res = ServerBitsFromGlyph(maskfont, maskChar, &cm, &mskbits)) != 0) + return res; + } + if ((res = ServerBitsFromGlyph(sourcefont, sourceChar, &cm, &srcbits)) != 0) + { + xfree(mskbits); + return res; + } + if (sourcefont != maskfont) + { + pCurs = (CursorPtr)xalloc(sizeof(CursorRec) + sizeof(CursorBits)); + if (pCurs) + bits = (CursorBitsPtr)((char *)pCurs + sizeof(CursorRec)); + else + bits = (CursorBitsPtr)NULL; + } + else + { + pCurs = (CursorPtr)xalloc(sizeof(CursorRec)); + if (pCurs) + bits = (CursorBitsPtr)xalloc(sizeof(CursorBits)); + else + bits = (CursorBitsPtr)NULL; + } + if (!bits) + { + xfree(pCurs); + xfree(mskbits); + xfree(srcbits); + return BadAlloc; + } + 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 = (GlyphSharePtr)xalloc(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; +#ifdef XFIXES + pCurs->serialNumber = ++cursorSerial; + pCurs->name = None; +#endif + + pCurs->foreRed = foreRed; + pCurs->foreGreen = foreGreen; + pCurs->foreBlue = foreBlue; + + pCurs->backRed = backRed; + pCurs->backGreen = backGreen; + pCurs->backBlue = backBlue; + + /* + * realize the cursor for every screen + */ + for (nscr = 0; nscr < screenInfo.numScreens; nscr++) + { + pscr = screenInfo.screens[nscr]; + if (!( *pscr->RealizeCursor)( pscr, pCurs)) + { + while (--nscr >= 0) + { + pscr = screenInfo.screens[nscr]; + ( *pscr->UnrealizeCursor)( pscr, pCurs); + } + FreeCursorBits(pCurs->bits); + xfree(pCurs); + return BadAlloc; + } + } + *ppCurs = pCurs; + return Success; +} + +/** 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 *pfilename, unsigned glyph) +{ + CursorPtr curs; + FontPtr cursorfont; + int err; + XID fontID; + + fontID = FakeClientID(0); + err = OpenFont(serverClient, fontID, FontLoadAll | FontOpenSync, + (unsigned)strlen( pfilename), pfilename); + if (err != Success) + return NullCursor; + + cursorfont = (FontPtr)LookupIDByType(fontID, RT_FONT); + if (!cursorfont) + return NullCursor; + if (AllocGlyphCursor(fontID, glyph, fontID, glyph + 1, + 0, 0, 0, ~0, ~0, ~0, &curs, serverClient) != Success) + return NullCursor; + + if (!AddResource(FakeClientID(0), RT_CURSOR, (pointer)curs)) + return NullCursor; + + return curs; +} |