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Diffstat (limited to 'libXmu/src/GrayPixmap.c')
| -rw-r--r-- | libXmu/src/GrayPixmap.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/libXmu/src/GrayPixmap.c b/libXmu/src/GrayPixmap.c new file mode 100644 index 000000000..478269f8a --- /dev/null +++ b/libXmu/src/GrayPixmap.c @@ -0,0 +1,139 @@ +/* $Xorg: GrayPixmap.c,v 1.4 2001/02/09 02:03:52 xorgcvs 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. + +*/ + +/*********************************************************** + +Copyright 1987, 1988 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. + +******************************************************************/ +/* $XFree86: xc/lib/Xmu/GrayPixmap.c,v 1.5 2001/01/17 19:42:55 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <X11/Intrinsic.h> +#include <X11/Xmu/Drawing.h> + +typedef struct _PixmapCache { + Screen *screen; + Pixmap pixmap; + Pixel foreground, background; + unsigned int depth; + int ref_count; + struct _PixmapCache *next; + } CacheEntry; + +static CacheEntry *pixmapCache = NULL; + + + +Pixmap +XmuCreateStippledPixmap(Screen *screen, Pixel fore, Pixel back, + unsigned int depth) +/* + * Creates a stippled pixmap of specified depth + * caches these so that multiple requests share the pixmap + */ +{ + register Display *display = DisplayOfScreen(screen); + CacheEntry *cachePtr; + Pixmap stippled_pixmap; + static unsigned char pixmap_bits[] = { + 0x02, 0x01, + }; + +/* + * Creates a stippled pixmap of depth DefaultDepth(screen) + * caches these so that multiple requests share the pixmap + */ + +#define pixmap_width 2 +#define pixmap_height 2 + + /* see if we already have a pixmap suitable for this screen */ + for (cachePtr = pixmapCache; cachePtr; cachePtr = cachePtr->next) { + if (cachePtr->screen == screen && cachePtr->foreground == fore && + cachePtr->background == back && cachePtr->depth == depth) + return( cachePtr->ref_count++, cachePtr->pixmap ); + } + + stippled_pixmap = XCreatePixmapFromBitmapData (display, + RootWindowOfScreen(screen), (char *)pixmap_bits, + pixmap_width, pixmap_height, fore, back, depth); + + /* and insert it at the head of the cache */ + cachePtr = XtNew(CacheEntry); + cachePtr->screen = screen; + cachePtr->foreground = fore; + cachePtr->background = back; + cachePtr->depth = depth; + cachePtr->pixmap = stippled_pixmap; + cachePtr->ref_count = 1; + cachePtr->next = pixmapCache; + pixmapCache = cachePtr; + + return( stippled_pixmap ); +} + +void +XmuReleaseStippledPixmap(Screen *screen, Pixmap pixmap) +{ + register Display *display = DisplayOfScreen(screen); + CacheEntry *cachePtr, **prevP; + for (prevP = &pixmapCache, cachePtr = pixmapCache; cachePtr;) { + if (cachePtr->screen == screen && cachePtr->pixmap == pixmap) { + if (--cachePtr->ref_count == 0) { + XFreePixmap( display, pixmap ); + *prevP = cachePtr->next; + XtFree( (char*)cachePtr ); + break; + } + } + prevP = &cachePtr->next; + cachePtr = *prevP; + } +} |