diff options
Diffstat (limited to 'libXmu/src/StdCmap.c')
-rw-r--r-- | libXmu/src/StdCmap.c | 466 |
1 files changed, 233 insertions, 233 deletions
diff --git a/libXmu/src/StdCmap.c b/libXmu/src/StdCmap.c index 8301d5ac4..5d2ce6160 100644 --- a/libXmu/src/StdCmap.c +++ b/libXmu/src/StdCmap.c @@ -1,233 +1,233 @@ -/*
-
-Copyright 1989, 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.
-
-*/
-
-/*
- * Author: Donna Converse, MIT X Consortium
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include <X11/Xlib.h>
-#include <X11/Xatom.h>
-#include <X11/Xutil.h>
-#include <X11/Xmu/StdCmap.h>
-
-#define lowbit(x) ((x) & (~(x) + 1))
-
-/*
- * Prototypes
- */
-/* argument restrictions */
-static Status valid_args(XVisualInfo*, unsigned long, unsigned long,
- unsigned long, Atom);
-
-/*
- * To create any one standard colormap, use XmuStandardColormap().
- *
- * Create a standard colormap for the given screen, visualid, and visual
- * depth, with the given red, green, and blue maximum values, with the
- * given standard property name. Return a pointer to an XStandardColormap
- * structure which describes the newly created colormap, upon success.
- * Upon failure, return NULL.
- *
- * XmuStandardColormap() calls XmuCreateColormap() to create the map.
- *
- * Resources created by this function are not made permanent; that is the
- * caller's responsibility.
- */
-
-XStandardColormap *
-XmuStandardColormap(Display *dpy, int screen, VisualID visualid,
- unsigned int depth, Atom property, Colormap cmap,
- unsigned long red_max, unsigned long green_max,
- unsigned long blue_max)
- /*
- * dpy - specifies X server connection
- * screen - specifies display screen
- * visualid - identifies the visual type
- * depth - identifies the visual type
- * property - a standard colormap property
- * cmap - specifies colormap ID or None
- * red_max, green_max, blue_max - allocations
- */
-{
- XStandardColormap *stdcmap;
- Status status;
- XVisualInfo vinfo_template, *vinfo;
- long vinfo_mask;
- int n;
-
- /* Match the required visual information to an actual visual */
- vinfo_template.visualid = visualid;
- vinfo_template.screen = screen;
- vinfo_template.depth = depth;
- vinfo_mask = VisualIDMask | VisualScreenMask | VisualDepthMask;
- if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &n)) == NULL)
- return NULL;
-
- /* Check the validity of the combination of visual characteristics,
- * allocation, and colormap property. Create an XStandardColormap
- * structure.
- */
-
- if (! valid_args(vinfo, red_max, green_max, blue_max, property)
- || ((stdcmap = XAllocStandardColormap()) == NULL)) {
- XFree((char *) vinfo);
- return NULL;
- }
-
- /* Fill in the XStandardColormap structure */
-
- if (cmap == DefaultColormap(dpy, screen)) {
- /* Allocating out of the default map, cannot use XFreeColormap() */
- Window win = XCreateWindow(dpy, RootWindow(dpy, screen), 1, 1, 1, 1,
- 0, 0, InputOnly, vinfo->visual,
- (unsigned long) 0,
- (XSetWindowAttributes *)NULL);
- stdcmap->killid = (XID) XCreatePixmap(dpy, win, 1, 1, depth);
- XDestroyWindow(dpy, win);
- stdcmap->colormap = cmap;
- } else {
- stdcmap->killid = ReleaseByFreeingColormap;
- stdcmap->colormap = XCreateColormap(dpy, RootWindow(dpy, screen),
- vinfo->visual, AllocNone);
- }
- stdcmap->red_max = red_max;
- stdcmap->green_max = green_max;
- stdcmap->blue_max = blue_max;
- if (property == XA_RGB_GRAY_MAP)
- stdcmap->red_mult = stdcmap->green_mult = stdcmap->blue_mult = 1;
- else if (vinfo->class == TrueColor || vinfo->class == DirectColor) {
- stdcmap->red_mult = lowbit(vinfo->red_mask);
- stdcmap->green_mult = lowbit(vinfo->green_mask);
- stdcmap->blue_mult = lowbit(vinfo->blue_mask);
- } else {
- stdcmap->red_mult = (red_max > 0)
- ? (green_max + 1) * (blue_max + 1) : 0;
- stdcmap->green_mult = (green_max > 0) ? blue_max + 1 : 0;
- stdcmap->blue_mult = (blue_max > 0) ? 1 : 0;
- }
- stdcmap->base_pixel = 0; /* base pixel may change */
- stdcmap->visualid = vinfo->visualid;
-
- /* Make the colormap */
-
- status = XmuCreateColormap(dpy, stdcmap);
-
- /* Clean up */
-
- XFree((char *) vinfo);
- if (!status) {
-
- /* Free the colormap or the pixmap, if we created one */
- if (stdcmap->killid == ReleaseByFreeingColormap)
- XFreeColormap(dpy, stdcmap->colormap);
- else if (stdcmap->killid != None)
- XFreePixmap(dpy, stdcmap->killid);
-
- XFree((char *) stdcmap);
- return (XStandardColormap *) NULL;
- }
- return stdcmap;
-}
-
-/****************************************************************************/
-static Status
-valid_args(XVisualInfo *vinfo, unsigned long red_max, unsigned long green_max,
- unsigned long blue_max, Atom property)
- /*
- * vinfo - specifies visual
- * red_max, green_max, blue_max - specifies alloc
- * property - specifies property name
- */
-{
- unsigned long ncolors; /* number of colors requested */
-
- /* Determine that the number of colors requested is <= map size */
-
- if ((vinfo->class == DirectColor) || (vinfo->class == TrueColor)) {
- unsigned long mask;
-
- mask = vinfo->red_mask;
- while (!(mask & 1))
- mask >>= 1;
- if (red_max > mask)
- return 0;
- mask = vinfo->green_mask;
- while (!(mask & 1))
- mask >>= 1;
- if (green_max > mask)
- return 0;
- mask = vinfo->blue_mask;
- while (!(mask & 1))
- mask >>= 1;
- if (blue_max > mask)
- return 0;
- } else if (property == XA_RGB_GRAY_MAP) {
- ncolors = red_max + green_max + blue_max + 1;
- if (ncolors > vinfo->colormap_size)
- return 0;
- } else {
- ncolors = (red_max + 1) * (green_max + 1) * (blue_max + 1);
- if (ncolors > vinfo->colormap_size)
- return 0;
- }
-
- /* Determine that the allocation and visual make sense for the property */
-
- switch (property)
- {
- case XA_RGB_DEFAULT_MAP:
- if (red_max == 0 || green_max == 0 || blue_max == 0)
- return 0;
- break;
- case XA_RGB_RED_MAP:
- if (red_max == 0)
- return 0;
- break;
- case XA_RGB_GREEN_MAP:
- if (green_max == 0)
- return 0;
- break;
- case XA_RGB_BLUE_MAP:
- if (blue_max == 0)
- return 0;
- break;
- case XA_RGB_BEST_MAP:
- if (red_max == 0 || green_max == 0 || blue_max == 0)
- return 0;
- break;
- case XA_RGB_GRAY_MAP:
- if (red_max == 0 || blue_max == 0 || green_max == 0)
- return 0;
- break;
- default:
- return 0;
- }
- return 1;
-}
+/* + +Copyright 1989, 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. + +*/ + +/* + * Author: Donna Converse, MIT X Consortium + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include <X11/Xlib.h> +#include <X11/Xatom.h> +#include <X11/Xutil.h> +#include <X11/Xmu/StdCmap.h> + +#define lowbit(x) ((x) & (~(x) + 1)) + +/* + * Prototypes + */ +/* argument restrictions */ +static Status valid_args(XVisualInfo*, unsigned long, unsigned long, + unsigned long, Atom); + +/* + * To create any one standard colormap, use XmuStandardColormap(). + * + * Create a standard colormap for the given screen, visualid, and visual + * depth, with the given red, green, and blue maximum values, with the + * given standard property name. Return a pointer to an XStandardColormap + * structure which describes the newly created colormap, upon success. + * Upon failure, return NULL. + * + * XmuStandardColormap() calls XmuCreateColormap() to create the map. + * + * Resources created by this function are not made permanent; that is the + * caller's responsibility. + */ + +XStandardColormap * +XmuStandardColormap(Display *dpy, int screen, VisualID visualid, + unsigned int depth, Atom property, Colormap cmap, + unsigned long red_max, unsigned long green_max, + unsigned long blue_max) + /* + * dpy - specifies X server connection + * screen - specifies display screen + * visualid - identifies the visual type + * depth - identifies the visual type + * property - a standard colormap property + * cmap - specifies colormap ID or None + * red_max, green_max, blue_max - allocations + */ +{ + XStandardColormap *stdcmap; + Status status; + XVisualInfo vinfo_template, *vinfo; + long vinfo_mask; + int n; + + /* Match the required visual information to an actual visual */ + vinfo_template.visualid = visualid; + vinfo_template.screen = screen; + vinfo_template.depth = depth; + vinfo_mask = VisualIDMask | VisualScreenMask | VisualDepthMask; + if ((vinfo = XGetVisualInfo(dpy, vinfo_mask, &vinfo_template, &n)) == NULL) + return NULL; + + /* Check the validity of the combination of visual characteristics, + * allocation, and colormap property. Create an XStandardColormap + * structure. + */ + + if (! valid_args(vinfo, red_max, green_max, blue_max, property) + || ((stdcmap = XAllocStandardColormap()) == NULL)) { + XFree((char *) vinfo); + return NULL; + } + + /* Fill in the XStandardColormap structure */ + + if (cmap == DefaultColormap(dpy, screen)) { + /* Allocating out of the default map, cannot use XFreeColormap() */ + Window win = XCreateWindow(dpy, RootWindow(dpy, screen), 1, 1, 1, 1, + 0, 0, InputOnly, vinfo->visual, + (unsigned long) 0, + (XSetWindowAttributes *)NULL); + stdcmap->killid = (XID) XCreatePixmap(dpy, win, 1, 1, depth); + XDestroyWindow(dpy, win); + stdcmap->colormap = cmap; + } else { + stdcmap->killid = ReleaseByFreeingColormap; + stdcmap->colormap = XCreateColormap(dpy, RootWindow(dpy, screen), + vinfo->visual, AllocNone); + } + stdcmap->red_max = red_max; + stdcmap->green_max = green_max; + stdcmap->blue_max = blue_max; + if (property == XA_RGB_GRAY_MAP) + stdcmap->red_mult = stdcmap->green_mult = stdcmap->blue_mult = 1; + else if (vinfo->class == TrueColor || vinfo->class == DirectColor) { + stdcmap->red_mult = lowbit(vinfo->red_mask); + stdcmap->green_mult = lowbit(vinfo->green_mask); + stdcmap->blue_mult = lowbit(vinfo->blue_mask); + } else { + stdcmap->red_mult = (red_max > 0) + ? (green_max + 1) * (blue_max + 1) : 0; + stdcmap->green_mult = (green_max > 0) ? blue_max + 1 : 0; + stdcmap->blue_mult = (blue_max > 0) ? 1 : 0; + } + stdcmap->base_pixel = 0; /* base pixel may change */ + stdcmap->visualid = vinfo->visualid; + + /* Make the colormap */ + + status = XmuCreateColormap(dpy, stdcmap); + + /* Clean up */ + + XFree((char *) vinfo); + if (!status) { + + /* Free the colormap or the pixmap, if we created one */ + if (stdcmap->killid == ReleaseByFreeingColormap) + XFreeColormap(dpy, stdcmap->colormap); + else if (stdcmap->killid != None) + XFreePixmap(dpy, stdcmap->killid); + + XFree((char *) stdcmap); + return (XStandardColormap *) NULL; + } + return stdcmap; +} + +/****************************************************************************/ +static Status +valid_args(XVisualInfo *vinfo, unsigned long red_max, unsigned long green_max, + unsigned long blue_max, Atom property) + /* + * vinfo - specifies visual + * red_max, green_max, blue_max - specifies alloc + * property - specifies property name + */ +{ + unsigned long ncolors; /* number of colors requested */ + + /* Determine that the number of colors requested is <= map size */ + + if ((vinfo->class == DirectColor) || (vinfo->class == TrueColor)) { + unsigned long mask; + + mask = vinfo->red_mask; + while (!(mask & 1)) + mask >>= 1; + if (red_max > mask) + return 0; + mask = vinfo->green_mask; + while (!(mask & 1)) + mask >>= 1; + if (green_max > mask) + return 0; + mask = vinfo->blue_mask; + while (!(mask & 1)) + mask >>= 1; + if (blue_max > mask) + return 0; + } else if (property == XA_RGB_GRAY_MAP) { + ncolors = red_max + green_max + blue_max + 1; + if (ncolors > vinfo->colormap_size) + return 0; + } else { + ncolors = (red_max + 1) * (green_max + 1) * (blue_max + 1); + if (ncolors > vinfo->colormap_size) + return 0; + } + + /* Determine that the allocation and visual make sense for the property */ + + switch (property) + { + case XA_RGB_DEFAULT_MAP: + if (red_max == 0 || green_max == 0 || blue_max == 0) + return 0; + break; + case XA_RGB_RED_MAP: + if (red_max == 0) + return 0; + break; + case XA_RGB_GREEN_MAP: + if (green_max == 0) + return 0; + break; + case XA_RGB_BLUE_MAP: + if (blue_max == 0) + return 0; + break; + case XA_RGB_BEST_MAP: + if (red_max == 0 || green_max == 0 || blue_max == 0) + return 0; + break; + case XA_RGB_GRAY_MAP: + if (red_max == 0 || blue_max == 0 || green_max == 0) + return 0; + break; + default: + return 0; + } + return 1; +} |