/nx-3.5.0/nx-X11/programs/Xserver/hw/nxagent/NXglyphcurs.c
C | 252 lines | 145 code | 31 blank | 76 comment | 21 complexity | 9ec841619eaa677f922c61f9e056a12f MD5 | raw file
Possible License(s): BSD-3-Clause, GPL-2.0, LGPL-2.0
- #ifdef NXAGENT_UPGRADE
- #include "X/NXglyphcurs.c"
- #else
- /**************************************************************************/
- /* */
- /* Copyright (c) 2001, 2011 NoMachine, http://www.nomachine.com/. */
- /* */
- /* NXAGENT, NX protocol compression and NX extensions to this software */
- /* are copyright of NoMachine. Redistribution and use of the present */
- /* software is allowed according to terms specified in the file LICENSE */
- /* which comes in the source distribution. */
- /* */
- /* Check http://www.nomachine.com/licensing.html for applicability. */
- /* */
- /* NX and NoMachine are trademarks of Medialogic S.p.A. */
- /* */
- /* All rights reserved. */
- /* */
- /**************************************************************************/
- /************************************************************************
- 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: glyphcurs.c,v 1.4 2001/02/09 02:04:40 xorgcvs Exp $ */
- #include "misc.h"
- #include "fontstruct.h"
- #include "dixfontstr.h"
- #include "scrnintstr.h"
- #include "gcstruct.h"
- #include "resource.h"
- #include "dix.h"
- #include "cursorstr.h"
- #include "opaque.h"
- #include "servermd.h"
- #include "../../fb/fb.h"
- #include "Pixmaps.h"
- #ifndef True
- #define True 1
- #endif
- /*
- get the bits out of the font in a portable way. to avoid
- dealing with padding and such-like, we draw the glyph into
- a bitmap, then read the bits out with GetImage, which
- uses server-natural format.
- since all screens return the same bitmap format, we'll just use
- the first one we find.
- the character origin lines up with the hotspot in the
- cursor metrics.
- */
- int
- ServerBitsFromGlyph(pfont, ch, cm, ppbits)
- FontPtr pfont;
- unsigned int ch;
- register CursorMetricPtr cm;
- unsigned char **ppbits;
- {
- register ScreenPtr pScreen;
- register GCPtr pGC;
- xRectangle rect;
- PixmapPtr ppix;
- long nby;
- char *pbits;
- ChangeGCVal gcval[3];
- unsigned char char2b[2];
- /* turn glyph index into a protocol-format char2b */
- char2b[0] = (unsigned char)(ch >> 8);
- char2b[1] = (unsigned char)(ch & 0xff);
- pScreen = screenInfo.screens[0];
- nby = BitmapBytePad(cm->width) * (long)cm->height;
- pbits = (char *)xalloc(nby);
- if (!pbits)
- return BadAlloc;
- /* zeroing the (pad) bits seems to help some ddx cursor handling */
- bzero(pbits, nby);
- ppix = fbCreatePixmap(pScreen, cm->width, cm->height, 1);
- pGC = GetScratchGC(1, pScreen);
- if (!ppix || !pGC)
- {
- if (ppix)
- fbDestroyPixmap(ppix);
- if (pGC)
- FreeScratchGC(pGC);
- xfree(pbits);
- return BadAlloc;
- }
- #ifdef TEST
- fprintf(stderr, "ServerBitsFromGlyph: Created virtual pixmap at [%p] with width [%d] height [%d] depth [%d].\n",
- (void *) ppix, cm->width, cm->height, 1);
- #endif
- nxagentPixmapPriv(ppix) -> id = 0;
- nxagentPixmapPriv(ppix) -> mid = 0;
- nxagentPixmapPriv(ppix) -> isVirtual = True;
- nxagentPixmapPriv(ppix) -> pRealPixmap = NULL;
- nxagentPixmapPriv(ppix) -> pVirtualPixmap = NULL;
- rect.x = 0;
- rect.y = 0;
- rect.width = cm->width;
- rect.height = cm->height;
- pGC->stateChanges |= GCFunction | GCForeground | GCFont;
- pGC->alu = GXcopy;
- pGC->fgPixel = 0;
- pfont->refcnt++;
- if (pGC->font)
- CloseFont(pGC->font, (Font)0);
- pGC->font = pfont;
- ValidateGC((DrawablePtr)ppix, pGC);
- fbPolyFillRect((DrawablePtr)ppix, pGC, 1, &rect);
- /* draw the glyph */
- gcval[0].val = 1;
- pGC->fgPixel = 1;
- pGC->stateChanges |= GCForeground;
- ValidateGC((DrawablePtr)ppix, pGC);
- miPolyText16((DrawablePtr)ppix, pGC, (int)cm->xhot, (int)cm->yhot, (int)1, (unsigned short*)char2b);
- fbGetImage((DrawablePtr)ppix, 0, 0, cm->width, cm->height,
- XYPixmap, 1, pbits);
- *ppbits = (unsigned char *)pbits;
- FreeScratchGC(pGC);
- fbDestroyPixmap(ppix);
- #ifdef TEST
- fprintf(stderr, "ServerBitsFromGlyph: Destroyed virtual pixmap at [%p].\n",
- (void *) ppix);
- #endif
- return Success;
- }
- Bool
- CursorMetricsFromGlyph( pfont, ch, cm)
- register FontPtr pfont;
- unsigned ch;
- register CursorMetricPtr cm;
- {
- CharInfoPtr pci;
- unsigned long nglyphs;
- CARD8 chs[2];
- FontEncoding encoding;
- chs[0] = ch >> 8;
- chs[1] = ch;
- encoding = (FONTLASTROW(pfont) == 0) ? Linear16Bit : TwoD16Bit;
- if (encoding == Linear16Bit)
- {
- if (ch < pfont->info.firstCol || pfont->info.lastCol < ch)
- return FALSE;
- }
- else
- {
- if (chs[0] < pfont->info.firstRow || pfont->info.lastRow < chs[0])
- return FALSE;
- if (chs[1] < pfont->info.firstCol || pfont->info.lastCol < chs[1])
- return FALSE;
- }
- (*pfont->get_glyphs) (pfont, 1, chs, encoding, &nglyphs, &pci);
- if (nglyphs == 0)
- return FALSE;
- cm->width = pci->metrics.rightSideBearing - pci->metrics.leftSideBearing;
- cm->height = pci->metrics.descent + pci->metrics.ascent;
- if (pci->metrics.leftSideBearing > 0)
- {
- cm->width += pci->metrics.leftSideBearing;
- cm->xhot = 0;
- }
- else
- {
- cm->xhot = -pci->metrics.leftSideBearing;
- if (pci->metrics.rightSideBearing < 0)
- cm->width -= pci->metrics.rightSideBearing;
- }
- if (pci->metrics.ascent < 0)
- {
- cm->height -= pci->metrics.ascent;
- cm->yhot = 0;
- }
- else
- {
- cm->yhot = pci->metrics.ascent;
- if (pci->metrics.descent < 0)
- cm->height -= pci->metrics.descent;
- }
- return TRUE;
- }
- #endif /* #ifdef NXAGENT_UPGRADE */