diff options
Diffstat (limited to 'libXext/src/Xcup.c')
| -rw-r--r-- | libXext/src/Xcup.c | 266 |
1 files changed, 266 insertions, 0 deletions
diff --git a/libXext/src/Xcup.c b/libXext/src/Xcup.c new file mode 100644 index 000000000..6013039ef --- /dev/null +++ b/libXext/src/Xcup.c @@ -0,0 +1,266 @@ +/* $XFree86: xc/lib/Xext/Xcup.c,v 1.8 2002/10/16 02:19:22 dawes Exp $ */ +/* + +Copyright 1987, 1988, 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. + +*/ +/* $Xorg: Xcup.c,v 1.5 2001/02/09 02:03:49 xorgcvs Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#ifdef WIN32 +#include <X11/Xwindows.h> +#endif + +#define NEED_EVENTS +#define NEED_REPLIES +#include <X11/Xlibint.h> +#include <X11/extensions/Xcup.h> +#include <X11/extensions/cupproto.h> +#include <X11/extensions/Xext.h> +#include <X11/extensions/extutil.h> + +static XExtensionInfo _xcup_info_data; +static XExtensionInfo *xcup_info = &_xcup_info_data; +static char *xcup_extension_name = XCUPNAME; + +/***************************************************************************** + * * + * private utility routines * + * * + *****************************************************************************/ + +static int close_display(Display *dpy, XExtCodes *codes); +static /* const */ XExtensionHooks xcup_extension_hooks = { + NULL, /* create_gc */ + NULL, /* copy_gc */ + NULL, /* flush_gc */ + NULL, /* free_gc */ + NULL, /* create_font */ + NULL, /* free_font */ + close_display, /* close_display */ + NULL, /* wire_to_event */ + NULL, /* event_to_wire */ + NULL, /* error */ + NULL, /* error_string */ +}; + +static XEXT_GENERATE_FIND_DISPLAY (find_display, xcup_info, + xcup_extension_name, + &xcup_extension_hooks, + 0, NULL) + +static XEXT_GENERATE_CLOSE_DISPLAY (close_display, xcup_info) + + +/***************************************************************************** + * * + * public Xcup Extension routines * + * * + *****************************************************************************/ + +Status +XcupQueryVersion( + Display* dpy, + int* major_version_return, + int* minor_version_return) +{ + XExtDisplayInfo *info = find_display (dpy); + xXcupQueryVersionReply rep; + xXcupQueryVersionReq *req; + + XextCheckExtension (dpy, info, xcup_extension_name, False); + + LockDisplay(dpy); + GetReq(XcupQueryVersion, req); + req->reqType = info->codes->major_opcode; + req->xcupReqType = X_XcupQueryVersion; + req->client_major_version = XCUP_MAJOR_VERSION; + req->client_minor_version = XCUP_MINOR_VERSION; + if (!_XReply(dpy, (xReply *)&rep, 0, xTrue)) { + UnlockDisplay(dpy); + SyncHandle(); + return False; + } + *major_version_return = rep.server_major_version; + *minor_version_return = rep.server_minor_version; + UnlockDisplay(dpy); + SyncHandle(); + return True; +} + +/* Win32 reserves 20 colormap entries for its desktop */ +#ifndef TYP_RESERVED_ENTRIES +#define TYP_RESERVED_ENTRIES 20 +#endif + +Status +XcupGetReservedColormapEntries( + Display* dpy, + int screen, + XColor** colors_out, + int* ncolors) +{ + XExtDisplayInfo *info = find_display (dpy); + xXcupGetReservedColormapEntriesReply rep; + xXcupGetReservedColormapEntriesReq *req; + xColorItem rbuf[TYP_RESERVED_ENTRIES]; + + *ncolors = 0; + + XextCheckExtension (dpy, info, xcup_extension_name, False); + + LockDisplay(dpy); + GetReq(XcupGetReservedColormapEntries, req); + req->reqType = info->codes->major_opcode; + req->xcupReqType = X_XcupGetReservedColormapEntries; + req->screen = screen; + if (_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + long nbytes; + xColorItem* rbufp; + int nentries = rep.length / 3; + + nbytes = nentries * SIZEOF (xColorItem); + if (nentries > TYP_RESERVED_ENTRIES) + rbufp = (xColorItem*) Xmalloc (nbytes); + else + rbufp = rbuf; + + if (rbufp == NULL) { + _XEatData (dpy, (unsigned long) nbytes); + UnlockDisplay (dpy); + SyncHandle (); + return False; + } + _XRead (dpy, (char*) rbufp, nbytes); + + *colors_out = (XColor*) Xmalloc (nentries * sizeof (XColor)); + if (*colors_out) { + xColorItem* cs = (xColorItem *) rbufp; + XColor* cd = *colors_out; + int i; + + *ncolors = nentries; + for (i = 0; i < *ncolors; i++, cd++) { + cd->pixel = cs->pixel; + cd->red = cs->red; + cd->green = cs->green; + cd->blue = cs->blue; + cs = (xColorItem*) (((char*) cs) + SIZEOF(xColorItem)); + } + if (rbufp != rbuf) XFree ((char*) rbufp); + UnlockDisplay(dpy); + SyncHandle(); + return True; + } + if (rbufp != rbuf) XFree ((char*) rbufp); + } + UnlockDisplay(dpy); + SyncHandle(); + return False; +} + +Status +XcupStoreColors( + Display* dpy, + Colormap colormap, + XColor* colors_in_out, + int ncolors) +{ + XExtDisplayInfo *info = find_display (dpy); + xXcupStoreColorsReply rep; + xXcupStoreColorsReq *req; + xColorItem rbuf[256]; + xColorItem citem; + int i; + XColor* xcp; + + XextCheckExtension (dpy, info, xcup_extension_name, False); + + LockDisplay(dpy); + GetReq(XcupStoreColors, req); + req->reqType = info->codes->major_opcode; + req->xcupReqType = X_XcupStoreColors; + req->cmap = colormap; + req->length += (ncolors * SIZEOF(xColorItem)) >> 2; + + for (i = 0, xcp = colors_in_out; i < ncolors; i++, xcp++) { + citem.pixel = xcp->pixel; + citem.red = xcp->red; + citem.green = xcp->green; + citem.blue = xcp->blue; + + /* note that xColorItem doesn't contain all 16-bit quantities, so + we can't use Data16 */ + Data(dpy, (char *)&citem, (long) SIZEOF(xColorItem)); + } + + if (_XReply(dpy, (xReply *)&rep, 0, xFalse)) { + long nbytes; + xColorItem* rbufp; + xColorItem* cs; + int nentries = rep.length / 3; + + nbytes = nentries * SIZEOF (xColorItem); + + if (nentries != ncolors) { + _XEatData (dpy, (unsigned long) nbytes); + UnlockDisplay (dpy); + SyncHandle (); + return False; + } + + if (ncolors > 256) + rbufp = (xColorItem*) Xmalloc (nbytes); + else + rbufp = rbuf; + + if (rbufp == NULL) { + _XEatData (dpy, (unsigned long) nbytes); + UnlockDisplay (dpy); + SyncHandle (); + return False; + + } + + _XRead (dpy, (char*) rbufp, nbytes); + + for (i = 0, xcp = colors_in_out, cs = rbufp; i < ncolors; i++, xcp++, cs++) { + xcp->pixel = cs->pixel; + xcp->red = cs->red; + xcp->green = cs->green; + xcp->blue = cs->blue; + xcp->flags = cs->flags; + } + if (rbufp != rbuf) XFree ((char*)rbufp); + + UnlockDisplay(dpy); + SyncHandle(); + return True; + } + UnlockDisplay(dpy); + SyncHandle(); + return False; +} + |