diff options
Diffstat (limited to 'src/glut/os2/glut_cmap.cpp')
| -rw-r--r-- | src/glut/os2/glut_cmap.cpp | 798 |
1 files changed, 399 insertions, 399 deletions
diff --git a/src/glut/os2/glut_cmap.cpp b/src/glut/os2/glut_cmap.cpp index d5b8d436a5..afe44f0aca 100644 --- a/src/glut/os2/glut_cmap.cpp +++ b/src/glut/os2/glut_cmap.cpp @@ -1,399 +1,399 @@ -
-/* Copyright (c) Mark J. Kilgard, 1994, 1996, 1997. */
-
-/* This program is freely distributable without licensing fees
- and is provided without guarantee or warrantee expressed or
- implied. This program is -not- in the public domain. */
-
-#ifdef __VMS
-//EK#include <GL/vms_x_fix.h>
-#endif
-
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h> /* SunOS multithreaded assert() needs <stdio.h>. Lame. */
-#include <assert.h>
-#if !defined(_WIN32) && !defined(__OS2__)
- #include <X11/Xlib.h>
- #include <X11/Xutil.h>
- #include <X11/Xatom.h> /* for XA_RGB_DEFAULT_MAP atom */
- #if defined(__vms)
- #include <Xmu/StdCmap.h> /* for XmuLookupStandardColormap */
- #else
- #include <X11/Xmu/StdCmap.h> /* for XmuLookupStandardColormap */
- #endif
-#endif
-
-/* SGI optimization introduced in IRIX 6.3 to avoid X server
- round trips for interning common X atoms. */
-#if defined(_SGI_EXTRA_PREDEFINES) && !defined(NO_FAST_ATOMS)
-#include <X11/SGIFastAtom.h>
-#else
-#define XSGIFastInternAtom(dpy,string,fast_name,how) XInternAtom(dpy,string,how)
-#endif
-
-#include "glutint.h"
-#include "layerutil.h"
-
-GLUTcolormap *__glutColormapList = NULL;
-
-GLUTcolormap *
-__glutAssociateNewColormap(XVisualInfo * vis)
-{
- GLUTcolormap *cmap;
- int transparentPixel, i;
- unsigned long pixels[255];
-
- cmap = (GLUTcolormap *) malloc(sizeof(GLUTcolormap));
- if (!cmap)
- __glutFatalError("out of memory.");
-#if defined(_WIN32) || defined(__OS2__)
- pixels[0] = 0; /* avoid compilation warnings on win32 */
- cmap->visual = 0;
- cmap->size = 256; /* always assume 256 on Win32 */
-#else
- cmap->visual = vis->visual;
- cmap->size = vis->visual->map_entries;
-#endif
- cmap->refcnt = 1;
- cmap->cells = (GLUTcolorcell *)
- malloc(sizeof(GLUTcolorcell) * cmap->size);
- if (!cmap->cells)
- __glutFatalError("out of memory.");
- /* make all color cell entries be invalid */
- for (i = cmap->size - 1; i >= 0; i--) {
- cmap->cells[i].component[GLUT_RED] = -1.0;
- cmap->cells[i].component[GLUT_GREEN] = -1.0;
- cmap->cells[i].component[GLUT_BLUE] = -1.0;
- }
- transparentPixel = __glutGetTransparentPixel(__glutDisplay, vis);
- if (transparentPixel == -1 || transparentPixel >= cmap->size) {
-
- /* If there is no transparent pixel or if the transparent
- pixel is outside the range of valid colormap cells (HP
- can implement their overlays this smart way since their
- transparent pixel is 255), we can AllocAll the colormap.
- See note below. */
-
- cmap->cmap = XCreateColormap(__glutDisplay,
- __glutRoot, cmap->visual, AllocAll);
- } else {
-
- /* On machines where zero (or some other value in the range
- of 0 through map_entries-1), BadAlloc may be generated
- when an AllocAll overlay colormap is allocated since the
- transparent pixel precludes all the cells in the colormap
- being allocated (the transparent pixel is pre-allocated).
- So in this case, use XAllocColorCells to allocate
- map_entries-1 pixels (that is, all but the transparent
- pixel. */
-
-#if defined(_WIN32) || defined(__OS2__)
- cmap->cmap = XCreateColormap(__glutDisplay,
- __glutRoot, 0, AllocNone);
-#else
- cmap->cmap = XCreateColormap(__glutDisplay,
- __glutRoot, vis->visual, AllocNone);
- XAllocColorCells(__glutDisplay, cmap->cmap, False, 0, 0,
- pixels, cmap->size - 1);
-#endif
- }
- cmap->next = __glutColormapList;
- __glutColormapList = cmap;
- return cmap;
-}
-
-static GLUTcolormap *
-associateColormap(XVisualInfo * vis)
-{
-#if !defined(_WIN32) && !defined(__OS2__)
- GLUTcolormap *cmap = __glutColormapList;
-
- while (cmap != NULL) {
- /* Play safe: compare visual IDs, not Visual*'s. */
- if (cmap->visual->visualid == vis->visual->visualid) {
- /* Already have created colormap for the visual. */
- cmap->refcnt++;
- return cmap;
- }
- cmap = cmap->next;
- }
-#endif
- return __glutAssociateNewColormap(vis);
-}
-
-void
-__glutSetupColormap(XVisualInfo * vi, GLUTcolormap ** colormap, Colormap * cmap)
-{
-#if defined(_WIN32) || defined(__OS2__)
- if (vi->dwFlags & PFD_NEED_PALETTE || vi->iPixelType == PFD_TYPE_COLORINDEX) {
- *colormap = associateColormap(vi);
- *cmap = (*colormap)->cmap;
- } else {
- *colormap = NULL;
- *cmap = 0;
- }
-#else
- Status status;
- XStandardColormap *standardCmaps;
- int i, numCmaps;
- static Atom hpColorRecoveryAtom = -1;
- int isRGB, visualClass, rc;
-
-#if defined(__cplusplus) || defined(c_plusplus)
- visualClass = vi->c_class;
-#else
- visualClass = vi->class;
-#endif
- switch (visualClass) {
- case PseudoColor:
- /* Mesa might return a PseudoColor visual for RGB mode. */
- rc = glXGetConfig(__glutDisplay, vi, GLX_RGBA, &isRGB);
- if (rc == 0 && isRGB) {
- /* Must be Mesa. */
- *colormap = NULL;
- if (MaxCmapsOfScreen(DefaultScreenOfDisplay(__glutDisplay)) == 1
- && vi->visual == DefaultVisual(__glutDisplay, __glutScreen)) {
- char *privateCmap = getenv("MESA_PRIVATE_CMAP");
-
- if (privateCmap) {
- /* User doesn't want to share colormaps. */
- *cmap = XCreateColormap(__glutDisplay, __glutRoot,
- vi->visual, AllocNone);
- } else {
- /* Share the root colormap. */
- *cmap = DefaultColormap(__glutDisplay, __glutScreen);
- }
- } else {
- /* Get our own PseudoColor colormap. */
- *cmap = XCreateColormap(__glutDisplay, __glutRoot,
- vi->visual, AllocNone);
- }
- } else {
- /* CI mode, real GLX never returns a PseudoColor visual
- for RGB mode. */
- *colormap = associateColormap(vi);
- *cmap = (*colormap)->cmap;
- }
- break;
- case TrueColor:
- case DirectColor:
- *colormap = NULL; /* NULL if RGBA */
-
- /* Hewlett-Packard supports a feature called "HP Color
- Recovery". Mesa has code to use HP Color Recovery. For
- Mesa to use this feature, the atom
- _HP_RGB_SMOOTH_MAP_LIST must be defined on the root
- window AND the colormap obtainable by XGetRGBColormaps
- for that atom must be set on the window. If that
- colormap is not set, the output will look stripy. */
-
- if (hpColorRecoveryAtom == -1) {
- char *xvendor;
-
-#define VENDOR_HP "Hewlett-Packard"
-
- /* Only makes sense to make XInternAtom round-trip if we
- know that we are connected to an HP X server. */
- xvendor = ServerVendor(__glutDisplay);
- if (!strncmp(xvendor, VENDOR_HP, sizeof(VENDOR_HP) - 1)) {
- hpColorRecoveryAtom = XInternAtom(__glutDisplay, "_HP_RGB_SMOOTH_MAP_LIST", True);
- } else {
- hpColorRecoveryAtom = None;
- }
- }
- if (hpColorRecoveryAtom != None) {
- status = XGetRGBColormaps(__glutDisplay, __glutRoot,
- &standardCmaps, &numCmaps, hpColorRecoveryAtom);
- if (status == 1) {
- for (i = 0; i < numCmaps; i++) {
- if (standardCmaps[i].visualid == vi->visualid) {
- *cmap = standardCmaps[i].colormap;
- XFree(standardCmaps);
- return;
- }
- }
- XFree(standardCmaps);
- }
- }
-#ifndef SOLARIS_2_4_BUG
- /* Solaris 2.4 and 2.5 have a bug in their
- XmuLookupStandardColormap implementations. Please
- compile your Solaris 2.4 or 2.5 version of GLUT with
- -DSOLARIS_2_4_BUG to work around this bug. The symptom
- of the bug is that programs will get a BadMatch error
- from X_CreateWindow when creating a GLUT window because
- Solaris 2.4 and 2.5 create a corrupted RGB_DEFAULT_MAP
- property. Note that this workaround prevents Colormap
- sharing between applications, perhaps leading
- unnecessary colormap installations or colormap flashing.
- Sun fixed this bug in Solaris 2.6. */
- status = XmuLookupStandardColormap(__glutDisplay,
- vi->screen, vi->visualid, vi->depth, XA_RGB_DEFAULT_MAP,
- /* replace */ False, /* retain */ True);
- if (status == 1) {
- status = XGetRGBColormaps(__glutDisplay, __glutRoot,
- &standardCmaps, &numCmaps, XA_RGB_DEFAULT_MAP);
- if (status == 1) {
- for (i = 0; i < numCmaps; i++) {
- if (standardCmaps[i].visualid == vi->visualid) {
- *cmap = standardCmaps[i].colormap;
- XFree(standardCmaps);
- return;
- }
- }
- XFree(standardCmaps);
- }
- }
-#endif
- /* If no standard colormap but TrueColor, just make a
- private one. */
- /* XXX Should do a better job of internal sharing for
- privately allocated TrueColor colormaps. */
- /* XXX DirectColor probably needs ramps hand initialized! */
- *cmap = XCreateColormap(__glutDisplay, __glutRoot,
- vi->visual, AllocNone);
- break;
- case StaticColor:
- case StaticGray:
- case GrayScale:
- /* Mesa supports these visuals */
- *colormap = NULL;
- *cmap = XCreateColormap(__glutDisplay, __glutRoot,
- vi->visual, AllocNone);
- break;
- default:
- __glutFatalError(
- "could not allocate colormap for visual type: %d.",
- visualClass);
- }
- return;
-#endif
-}
-
-#if !defined(_WIN32) && !defined(__OS2__)
-static int
-findColormaps(GLUTwindow * window,
- Window * winlist, Colormap * cmaplist, int num, int max)
-{
- GLUTwindow *child;
- int i;
-
- /* Do not allow more entries that maximum number of
- colormaps! */
- if (num >= max)
- return num;
- /* Is cmap for this window already on the list? */
- for (i = 0; i < num; i++) {
- if (cmaplist[i] == window->cmap)
- goto normalColormapAlreadyListed;
- }
- /* Not found on the list; add colormap and window. */
- winlist[num] = window->win;
- cmaplist[num] = window->cmap;
- num++;
-
-normalColormapAlreadyListed:
-
- /* Repeat above but for the overlay colormap if there one. */
- if (window->overlay) {
- if (num >= max)
- return num;
- for (i = 0; i < num; i++) {
- if (cmaplist[i] == window->overlay->cmap)
- goto overlayColormapAlreadyListed;
- }
- winlist[num] = window->overlay->win;
- cmaplist[num] = window->overlay->cmap;
- num++;
- }
-overlayColormapAlreadyListed:
-
- /* Recursively search children. */
- child = window->children;
- while (child) {
- num = findColormaps(child, winlist, cmaplist, num, max);
- child = child->siblings;
- }
- return num;
-}
-
-void
-__glutEstablishColormapsProperty(GLUTwindow * window)
-{
- /* this routine is strictly X. Win32 doesn't need to do
- anything of this sort (but has to do other wacky stuff
- later). */
- static Atom wmColormapWindows = None;
- Window *winlist;
- Colormap *cmaplist;
- Status status;
- int maxcmaps, num;
-
- assert(!window->parent);
- maxcmaps = MaxCmapsOfScreen(ScreenOfDisplay(__glutDisplay,
- __glutScreen));
- /* For portability reasons we don't use alloca for winlist
- and cmaplist, but we could. */
- winlist = (Window *) malloc(maxcmaps * sizeof(Window));
- cmaplist = (Colormap *) malloc(maxcmaps * sizeof(Colormap));
- num = findColormaps(window, winlist, cmaplist, 0, maxcmaps);
- if (num < 2) {
- /* Property no longer needed; remove it. */
- wmColormapWindows = XSGIFastInternAtom(__glutDisplay,
- "WM_COLORMAP_WINDOWS", SGI_XA_WM_COLORMAP_WINDOWS, False);
- if (wmColormapWindows == None) {
- __glutWarning("Could not intern X atom for WM_COLORMAP_WINDOWS.");
- return;
- }
- XDeleteProperty(__glutDisplay, window->win, wmColormapWindows);
- } else {
- status = XSetWMColormapWindows(__glutDisplay, window->win,
- winlist, num);
- /* XSetWMColormapWindows should always work unless the
- WM_COLORMAP_WINDOWS property cannot be intern'ed. We
- check to be safe. */
- if (status == False)
- __glutFatalError("XSetWMColormapWindows returned False.");
- }
- /* For portability reasons we don't use alloca for winlist
- and cmaplist, but we could. */
- free(winlist);
- free(cmaplist);
-}
-
-GLUTwindow *
-__glutToplevelOf(GLUTwindow * window)
-{
- while (window->parent) {
- window = window->parent;
- }
- return window;
-}
-#endif
-
-void
-__glutFreeColormap(GLUTcolormap * cmap)
-{
- GLUTcolormap *cur, **prev;
-
- cmap->refcnt--;
- if (cmap->refcnt == 0) {
- /* remove from colormap list */
- cur = __glutColormapList;
- prev = &__glutColormapList;
- while (cur) {
- if (cur == cmap) {
- *prev = cmap->next;
- break;
- }
- prev = &(cur->next);
- cur = cur->next;
- }
- /* actually free colormap */
- XFreeColormap(__glutDisplay, cmap->cmap);
- free(cmap->cells);
- free(cmap);
- }
-}
-
+ +/* Copyright (c) Mark J. Kilgard, 1994, 1996, 1997. */ + +/* This program is freely distributable without licensing fees + and is provided without guarantee or warrantee expressed or + implied. This program is -not- in the public domain. */ + +#ifdef __VMS +//EK#include <GL/vms_x_fix.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> /* SunOS multithreaded assert() needs <stdio.h>. Lame. */ +#include <assert.h> +#if !defined(_WIN32) && !defined(__OS2__) + #include <X11/Xlib.h> + #include <X11/Xutil.h> + #include <X11/Xatom.h> /* for XA_RGB_DEFAULT_MAP atom */ + #if defined(__vms) + #include <Xmu/StdCmap.h> /* for XmuLookupStandardColormap */ + #else + #include <X11/Xmu/StdCmap.h> /* for XmuLookupStandardColormap */ + #endif +#endif + +/* SGI optimization introduced in IRIX 6.3 to avoid X server + round trips for interning common X atoms. */ +#if defined(_SGI_EXTRA_PREDEFINES) && !defined(NO_FAST_ATOMS) +#include <X11/SGIFastAtom.h> +#else +#define XSGIFastInternAtom(dpy,string,fast_name,how) XInternAtom(dpy,string,how) +#endif + +#include "glutint.h" +#include "layerutil.h" + +GLUTcolormap *__glutColormapList = NULL; + +GLUTcolormap * +__glutAssociateNewColormap(XVisualInfo * vis) +{ + GLUTcolormap *cmap; + int transparentPixel, i; + unsigned long pixels[255]; + + cmap = (GLUTcolormap *) malloc(sizeof(GLUTcolormap)); + if (!cmap) + __glutFatalError("out of memory."); +#if defined(_WIN32) || defined(__OS2__) + pixels[0] = 0; /* avoid compilation warnings on win32 */ + cmap->visual = 0; + cmap->size = 256; /* always assume 256 on Win32 */ +#else + cmap->visual = vis->visual; + cmap->size = vis->visual->map_entries; +#endif + cmap->refcnt = 1; + cmap->cells = (GLUTcolorcell *) + malloc(sizeof(GLUTcolorcell) * cmap->size); + if (!cmap->cells) + __glutFatalError("out of memory."); + /* make all color cell entries be invalid */ + for (i = cmap->size - 1; i >= 0; i--) { + cmap->cells[i].component[GLUT_RED] = -1.0; + cmap->cells[i].component[GLUT_GREEN] = -1.0; + cmap->cells[i].component[GLUT_BLUE] = -1.0; + } + transparentPixel = __glutGetTransparentPixel(__glutDisplay, vis); + if (transparentPixel == -1 || transparentPixel >= cmap->size) { + + /* If there is no transparent pixel or if the transparent + pixel is outside the range of valid colormap cells (HP + can implement their overlays this smart way since their + transparent pixel is 255), we can AllocAll the colormap. + See note below. */ + + cmap->cmap = XCreateColormap(__glutDisplay, + __glutRoot, cmap->visual, AllocAll); + } else { + + /* On machines where zero (or some other value in the range + of 0 through map_entries-1), BadAlloc may be generated + when an AllocAll overlay colormap is allocated since the + transparent pixel precludes all the cells in the colormap + being allocated (the transparent pixel is pre-allocated). + So in this case, use XAllocColorCells to allocate + map_entries-1 pixels (that is, all but the transparent + pixel. */ + +#if defined(_WIN32) || defined(__OS2__) + cmap->cmap = XCreateColormap(__glutDisplay, + __glutRoot, 0, AllocNone); +#else + cmap->cmap = XCreateColormap(__glutDisplay, + __glutRoot, vis->visual, AllocNone); + XAllocColorCells(__glutDisplay, cmap->cmap, False, 0, 0, + pixels, cmap->size - 1); +#endif + } + cmap->next = __glutColormapList; + __glutColormapList = cmap; + return cmap; +} + +static GLUTcolormap * +associateColormap(XVisualInfo * vis) +{ +#if !defined(_WIN32) && !defined(__OS2__) + GLUTcolormap *cmap = __glutColormapList; + + while (cmap != NULL) { + /* Play safe: compare visual IDs, not Visual*'s. */ + if (cmap->visual->visualid == vis->visual->visualid) { + /* Already have created colormap for the visual. */ + cmap->refcnt++; + return cmap; + } + cmap = cmap->next; + } +#endif + return __glutAssociateNewColormap(vis); +} + +void +__glutSetupColormap(XVisualInfo * vi, GLUTcolormap ** colormap, Colormap * cmap) +{ +#if defined(_WIN32) || defined(__OS2__) + if (vi->dwFlags & PFD_NEED_PALETTE || vi->iPixelType == PFD_TYPE_COLORINDEX) { + *colormap = associateColormap(vi); + *cmap = (*colormap)->cmap; + } else { + *colormap = NULL; + *cmap = 0; + } +#else + Status status; + XStandardColormap *standardCmaps; + int i, numCmaps; + static Atom hpColorRecoveryAtom = -1; + int isRGB, visualClass, rc; + +#if defined(__cplusplus) || defined(c_plusplus) + visualClass = vi->c_class; +#else + visualClass = vi->class; +#endif + switch (visualClass) { + case PseudoColor: + /* Mesa might return a PseudoColor visual for RGB mode. */ + rc = glXGetConfig(__glutDisplay, vi, GLX_RGBA, &isRGB); + if (rc == 0 && isRGB) { + /* Must be Mesa. */ + *colormap = NULL; + if (MaxCmapsOfScreen(DefaultScreenOfDisplay(__glutDisplay)) == 1 + && vi->visual == DefaultVisual(__glutDisplay, __glutScreen)) { + char *privateCmap = getenv("MESA_PRIVATE_CMAP"); + + if (privateCmap) { + /* User doesn't want to share colormaps. */ + *cmap = XCreateColormap(__glutDisplay, __glutRoot, + vi->visual, AllocNone); + } else { + /* Share the root colormap. */ + *cmap = DefaultColormap(__glutDisplay, __glutScreen); + } + } else { + /* Get our own PseudoColor colormap. */ + *cmap = XCreateColormap(__glutDisplay, __glutRoot, + vi->visual, AllocNone); + } + } else { + /* CI mode, real GLX never returns a PseudoColor visual + for RGB mode. */ + *colormap = associateColormap(vi); + *cmap = (*colormap)->cmap; + } + break; + case TrueColor: + case DirectColor: + *colormap = NULL; /* NULL if RGBA */ + + /* Hewlett-Packard supports a feature called "HP Color + Recovery". Mesa has code to use HP Color Recovery. For + Mesa to use this feature, the atom + _HP_RGB_SMOOTH_MAP_LIST must be defined on the root + window AND the colormap obtainable by XGetRGBColormaps + for that atom must be set on the window. If that + colormap is not set, the output will look stripy. */ + + if (hpColorRecoveryAtom == -1) { + char *xvendor; + +#define VENDOR_HP "Hewlett-Packard" + + /* Only makes sense to make XInternAtom round-trip if we + know that we are connected to an HP X server. */ + xvendor = ServerVendor(__glutDisplay); + if (!strncmp(xvendor, VENDOR_HP, sizeof(VENDOR_HP) - 1)) { + hpColorRecoveryAtom = XInternAtom(__glutDisplay, "_HP_RGB_SMOOTH_MAP_LIST", True); + } else { + hpColorRecoveryAtom = None; + } + } + if (hpColorRecoveryAtom != None) { + status = XGetRGBColormaps(__glutDisplay, __glutRoot, + &standardCmaps, &numCmaps, hpColorRecoveryAtom); + if (status == 1) { + for (i = 0; i < numCmaps; i++) { + if (standardCmaps[i].visualid == vi->visualid) { + *cmap = standardCmaps[i].colormap; + XFree(standardCmaps); + return; + } + } + XFree(standardCmaps); + } + } +#ifndef SOLARIS_2_4_BUG + /* Solaris 2.4 and 2.5 have a bug in their + XmuLookupStandardColormap implementations. Please + compile your Solaris 2.4 or 2.5 version of GLUT with + -DSOLARIS_2_4_BUG to work around this bug. The symptom + of the bug is that programs will get a BadMatch error + from X_CreateWindow when creating a GLUT window because + Solaris 2.4 and 2.5 create a corrupted RGB_DEFAULT_MAP + property. Note that this workaround prevents Colormap + sharing between applications, perhaps leading + unnecessary colormap installations or colormap flashing. + Sun fixed this bug in Solaris 2.6. */ + status = XmuLookupStandardColormap(__glutDisplay, + vi->screen, vi->visualid, vi->depth, XA_RGB_DEFAULT_MAP, + /* replace */ False, /* retain */ True); + if (status == 1) { + status = XGetRGBColormaps(__glutDisplay, __glutRoot, + &standardCmaps, &numCmaps, XA_RGB_DEFAULT_MAP); + if (status == 1) { + for (i = 0; i < numCmaps; i++) { + if (standardCmaps[i].visualid == vi->visualid) { + *cmap = standardCmaps[i].colormap; + XFree(standardCmaps); + return; + } + } + XFree(standardCmaps); + } + } +#endif + /* If no standard colormap but TrueColor, just make a + private one. */ + /* XXX Should do a better job of internal sharing for + privately allocated TrueColor colormaps. */ + /* XXX DirectColor probably needs ramps hand initialized! */ + *cmap = XCreateColormap(__glutDisplay, __glutRoot, + vi->visual, AllocNone); + break; + case StaticColor: + case StaticGray: + case GrayScale: + /* Mesa supports these visuals */ + *colormap = NULL; + *cmap = XCreateColormap(__glutDisplay, __glutRoot, + vi->visual, AllocNone); + break; + default: + __glutFatalError( + "could not allocate colormap for visual type: %d.", + visualClass); + } + return; +#endif +} + +#if !defined(_WIN32) && !defined(__OS2__) +static int +findColormaps(GLUTwindow * window, + Window * winlist, Colormap * cmaplist, int num, int max) +{ + GLUTwindow *child; + int i; + + /* Do not allow more entries that maximum number of + colormaps! */ + if (num >= max) + return num; + /* Is cmap for this window already on the list? */ + for (i = 0; i < num; i++) { + if (cmaplist[i] == window->cmap) + goto normalColormapAlreadyListed; + } + /* Not found on the list; add colormap and window. */ + winlist[num] = window->win; + cmaplist[num] = window->cmap; + num++; + +normalColormapAlreadyListed: + + /* Repeat above but for the overlay colormap if there one. */ + if (window->overlay) { + if (num >= max) + return num; + for (i = 0; i < num; i++) { + if (cmaplist[i] == window->overlay->cmap) + goto overlayColormapAlreadyListed; + } + winlist[num] = window->overlay->win; + cmaplist[num] = window->overlay->cmap; + num++; + } +overlayColormapAlreadyListed: + + /* Recursively search children. */ + child = window->children; + while (child) { + num = findColormaps(child, winlist, cmaplist, num, max); + child = child->siblings; + } + return num; +} + +void +__glutEstablishColormapsProperty(GLUTwindow * window) +{ + /* this routine is strictly X. Win32 doesn't need to do + anything of this sort (but has to do other wacky stuff + later). */ + static Atom wmColormapWindows = None; + Window *winlist; + Colormap *cmaplist; + Status status; + int maxcmaps, num; + + assert(!window->parent); + maxcmaps = MaxCmapsOfScreen(ScreenOfDisplay(__glutDisplay, + __glutScreen)); + /* For portability reasons we don't use alloca for winlist + and cmaplist, but we could. */ + winlist = (Window *) malloc(maxcmaps * sizeof(Window)); + cmaplist = (Colormap *) malloc(maxcmaps * sizeof(Colormap)); + num = findColormaps(window, winlist, cmaplist, 0, maxcmaps); + if (num < 2) { + /* Property no longer needed; remove it. */ + wmColormapWindows = XSGIFastInternAtom(__glutDisplay, + "WM_COLORMAP_WINDOWS", SGI_XA_WM_COLORMAP_WINDOWS, False); + if (wmColormapWindows == None) { + __glutWarning("Could not intern X atom for WM_COLORMAP_WINDOWS."); + return; + } + XDeleteProperty(__glutDisplay, window->win, wmColormapWindows); + } else { + status = XSetWMColormapWindows(__glutDisplay, window->win, + winlist, num); + /* XSetWMColormapWindows should always work unless the + WM_COLORMAP_WINDOWS property cannot be intern'ed. We + check to be safe. */ + if (status == False) + __glutFatalError("XSetWMColormapWindows returned False."); + } + /* For portability reasons we don't use alloca for winlist + and cmaplist, but we could. */ + free(winlist); + free(cmaplist); +} + +GLUTwindow * +__glutToplevelOf(GLUTwindow * window) +{ + while (window->parent) { + window = window->parent; + } + return window; +} +#endif + +void +__glutFreeColormap(GLUTcolormap * cmap) +{ + GLUTcolormap *cur, **prev; + + cmap->refcnt--; + if (cmap->refcnt == 0) { + /* remove from colormap list */ + cur = __glutColormapList; + prev = &__glutColormapList; + while (cur) { + if (cur == cmap) { + *prev = cmap->next; + break; + } + prev = &(cur->next); + cur = cur->next; + } + /* actually free colormap */ + XFreeColormap(__glutDisplay, cmap->cmap); + free(cmap->cells); + free(cmap); + } +} + |