Initial revision
This commit is contained in:
Keith Packard
commit
1685456c7e
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@ -0,0 +1,7 @@
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LIBS=`pkg-config --cflags --libs xcomposite xfixes xdamage xrender`
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xcompmgr: xcompmgr.c
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$(CC) -o $@ $(CFLAGS) xcompmgr.c $(LIBS)
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clean:
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rm xcompmgr
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@ -0,0 +1,472 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <X11/Xlib.h>
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#include <X11/extensions/Xcomposite.h>
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#include <X11/extensions/Xdamage.h>
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#include <X11/extensions/Xrender.h>
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typedef struct _win {
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struct _win *next;
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Window id;
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XWindowAttributes a;
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int damaged;
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int mode;
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Damage damage;
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Picture picture;
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XserverRegion borderSize;
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/* for drawing translucent windows */
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XserverRegion borderClip;
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struct _win *prev_trans;
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} win;
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win *list;
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Display *dpy;
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int scr;
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Window root;
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Picture rootPicture;
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Picture transPicture;
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XserverRegion allDamage;
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#define WINDOW_PLAIN 0
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#define WINDOW_DROP 1
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#define WINDOW_TRANS 2
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win *
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find_win (Display *dpy, Window id)
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{
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win *w;
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for (w = list; w; w = w->next)
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if (w->id == id)
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return w;
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return 0;
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}
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void
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paint_root (Display *dpy)
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{
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XRenderColor c;
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c.red = c.green = c.blue = 0x8080;
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c.alpha = 0xffff;
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XRenderFillRectangle (dpy, PictOpSrc, rootPicture, &c,
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0, 0, 32767, 32767);
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}
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XserverRegion
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border_size (Display *dpy, win *w)
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{
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XserverRegion border;
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border = XFixesCreateRegionFromWindow (dpy, w->id, WindowRegionBounding);
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/* translate this */
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XFixesUnionRegion (dpy, border, border, w->a.x, w->a.y, None, 0, 0);
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return border;
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}
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void
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paint_all (Display *dpy, XserverRegion region)
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{
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win *w;
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win *t = 0;
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for (w = list; w; w = w->next)
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{
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Picture mask;
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if (w->a.map_state != IsViewable)
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continue;
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if (w->mode == WINDOW_TRANS)
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{
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w->borderClip = XFixesCreateRegion (dpy, 0, 0);
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XFixesUnionRegion (dpy, w->borderClip, region, 0, 0, None, 0, 0);
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w->prev_trans = t;
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t = w;
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}
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else
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{
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XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, region);
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if (w->borderSize)
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XFixesDestroyRegion (dpy, w->borderSize);
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w->borderSize = border_size (dpy, w);
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XFixesSubtractRegion (dpy, region, region, 0, 0, w->borderSize, 0, 0);
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XRenderComposite (dpy, PictOpSrc, w->picture, None, rootPicture,
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0, 0, 0, 0,
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w->a.x + w->a.border_width,
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w->a.y + w->a.border_width,
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w->a.width,
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w->a.height);
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}
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}
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XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, region);
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paint_root (dpy);
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for (w = t; w; w = w->prev_trans)
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{
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XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, w->borderClip);
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XRenderComposite (dpy, PictOpOver, w->picture, transPicture, rootPicture,
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0, 0, 0, 0,
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w->a.x + w->a.border_width,
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w->a.y + w->a.border_width,
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w->a.width,
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w->a.height);
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XFixesDestroyRegion (dpy, w->borderClip);
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w->borderClip = None;
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}
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XFixesDestroyRegion (dpy, region);
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}
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void
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add_damage (Display *dpy, XserverRegion damage)
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{
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if (allDamage)
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{
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XFixesUnionRegion (dpy, allDamage, allDamage, 0, 0, damage, 0, 0);
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XFixesDestroyRegion (dpy, damage);
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}
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else
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allDamage = damage;
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}
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void
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repair_win (Display *dpy, Window id)
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{
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win *w = find_win (dpy, id);
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XserverRegion parts;
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if (!w)
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return;
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/* printf ("repair 0x%x\n", w->id); */
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parts = XFixesCreateRegion (dpy, 0, 0);
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/* translate region */
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XDamageSubtract (dpy, w->damage, None, parts);
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XFixesUnionRegion (dpy, parts, parts, w->a.x, w->a.y, None, 0, 0);
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add_damage (dpy, parts);
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}
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void
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map_win (Display *dpy, Window id)
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{
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win *w = find_win (dpy, id);
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XserverRegion region;
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if (!w)
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return;
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w->a.map_state = IsViewable;
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w->damage = XDamageCreate (dpy, id, XDamageReportNonEmpty);
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region = border_size (dpy, w);
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add_damage (dpy, region);
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}
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void
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unmap_win (Display *dpy, Window id)
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{
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win *w = find_win (dpy, id);
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if (!w)
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return;
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w->a.map_state = IsUnmapped;
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if (w->damage != None)
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{
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XDamageDestroy (dpy, w->damage);
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w->damage = None;
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}
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if (w->borderSize != None)
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{
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add_damage (dpy, w->borderSize); /* destroys region */
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w->borderSize = None;
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}
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}
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void
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add_win (Display *dpy, Window id, Window prev)
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{
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win *new = malloc (sizeof (win));
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win **p;
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XWindowAttributes a;
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XRenderPictureAttributes pa;
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if (!new)
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return;
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if (prev)
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{
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for (p = &list; *p; p = &(*p)->next)
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if ((*p)->id == prev)
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break;
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}
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else
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p = &list;
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new->id = id;
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if (!XGetWindowAttributes (dpy, id, &new->a))
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{
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free (new);
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return;
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}
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new->damaged = 0;
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new->damage = None;
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pa.subwindow_mode = IncludeInferiors;
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new->picture = XRenderCreatePicture (dpy, id,
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XRenderFindVisualFormat (dpy,
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new->a.visual),
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CPSubwindowMode,
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&pa);
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new->borderSize = None;
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if (new->a.override_redirect)
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new->mode = WINDOW_TRANS;
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else
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new->mode = WINDOW_DROP;
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new->next = *p;
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*p = new;
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if (new->a.map_state == IsViewable)
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map_win (dpy, id);
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}
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void
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configure_win (Display *dpy, XConfigureEvent *ce)
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{
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win *w = find_win (dpy, ce->window);
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Window above;
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XserverRegion damage = None;
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if (!w)
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return;
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if (w->a.map_state == IsViewable)
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{
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damage = XFixesCreateRegion (dpy, 0, 0);
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if (w->borderSize != None)
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XFixesUnionRegion (dpy, damage, w->borderSize, 0, 0, None, 0, 0);
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}
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w->a.x = ce->x;
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w->a.y = ce->y;
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w->a.width = ce->width;
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w->a.height = ce->height;
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w->a.border_width = ce->border_width;
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w->a.override_redirect = ce->override_redirect;
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if (w->next)
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above = w->next->id;
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else
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above = None;
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if (above != ce->above)
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{
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win **prev;
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/* unhook */
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for (prev = &list; *prev; prev = &(*prev)->next)
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if ((*prev) == w)
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break;
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*prev = w->next;
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/* rehook */
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for (prev = &list; *prev; prev = &(*prev)->next)
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{
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if ((*prev)->id == ce->above)
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break;
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}
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w->next = *prev;
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*prev = w;
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}
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if (damage)
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{
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XserverRegion border = border_size (dpy, w);
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XFixesUnionRegion (dpy, damage, damage, 0, 0, border, 0, 0);
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add_damage (dpy, damage);
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}
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}
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void
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destroy_win (Display *dpy, Window id, Bool gone)
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{
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win **prev, *w;
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for (prev = &list; w = *prev; prev = &w->next)
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if (w->id == id)
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{
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if (!gone)
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{
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unmap_win (dpy, id);
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XRenderFreePicture (dpy, w->picture);
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}
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*prev = w->next;
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free (w);
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break;
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}
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}
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void
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dump_win (win *w)
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{
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printf ("\t%08x: %d x %d + %d + %d (%d)\n", w->id,
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w->a.width, w->a.height, w->a.x, w->a.y, w->a.border_width);
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}
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void
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dump_wins (void)
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{
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win *w;
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printf ("windows:\n");
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for (w = list; w; w = w->next)
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dump_win (w);
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}
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void
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damage_win (Display *dpy, XDamageNotifyEvent *de)
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{
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repair_win (dpy, de->drawable);
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}
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int
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error (Display *dpy, XErrorEvent *ev)
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{
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printf ("error %d request %d minor %d\n",
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ev->error_code, ev->request_code, ev->minor_code);
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}
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void
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expose_root (Display *dpy, Window root, XRectangle *rects, int nrects)
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{
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XserverRegion region = XFixesCreateRegion (dpy, rects, nrects);
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add_damage (dpy, region);
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}
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main ()
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{
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XEvent ev;
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int event_base, error_base;
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Window root_return, parent_return;
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Window *children;
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Pixmap transPixmap;
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unsigned int nchildren;
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int i;
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int damage_event, damage_error;
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int xfixes_event, xfixes_error;
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XRenderPictureAttributes pa;
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XRenderColor c;
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XRectangle *expose_rects = 0;
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int size_expose = 0;
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int n_expose = 0;
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dpy = XOpenDisplay (0);
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if (!dpy)
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{
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fprintf (stderr, "Can't open display\n");
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exit (1);
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}
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XSetErrorHandler (error);
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scr = DefaultScreen (dpy);
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root = RootWindow (dpy, scr);
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pa.subwindow_mode = IncludeInferiors;
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transPixmap = XCreatePixmap (dpy, root, 1, 1, 8);
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pa.repeat = True;
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transPicture = XRenderCreatePicture (dpy, transPixmap,
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XRenderFindStandardFormat (dpy, PictStandardA8),
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CPRepeat,
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&pa);
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c.red = c.green = c.blue = 0;
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c.alpha = 0xc0c0;
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XRenderFillRectangle (dpy, PictOpSrc, transPicture, &c, 0, 0, 1, 1);
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rootPicture = XRenderCreatePicture (dpy, root,
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XRenderFindVisualFormat (dpy,
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DefaultVisual (dpy, scr)),
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CPSubwindowMode,
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&pa);
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if (!XCompositeQueryExtension (dpy, &event_base, &error_base))
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{
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fprintf (stderr, "No composite extension\n");
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exit (1);
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}
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if (!XDamageQueryExtension (dpy, &damage_event, &damage_error))
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{
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fprintf (stderr, "No damage extension\n");
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exit (1);
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}
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if (!XFixesQueryExtension (dpy, &xfixes_event, &xfixes_error))
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{
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fprintf (stderr, "No XFixes extension\n");
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exit (1);
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}
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allDamage = None;
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XGrabServer (dpy);
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XCompositeRedirectSubwindows (dpy, root, CompositeRedirectManual);
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paint_root (dpy);
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XSelectInput (dpy, root, SubstructureNotifyMask|ExposureMask);
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XQueryTree (dpy, root, &root_return, &parent_return, &children, &nchildren);
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for (i = 0; i < nchildren; i++)
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add_win (dpy, children[i], i ? children[i-1] : None);
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XFree (children);
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XUngrabServer (dpy);
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for (;;)
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{
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/* dump_wins (); */
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do {
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XNextEvent (dpy, &ev);
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/* printf ("event %d\n", ev.type); */
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switch (ev.type) {
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case CreateNotify:
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add_win (dpy, ev.xcreatewindow.window, 0);
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break;
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case ConfigureNotify:
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configure_win (dpy, &ev.xconfigure);
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break;
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case DestroyNotify:
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destroy_win (dpy, ev.xdestroywindow.window, True);
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break;
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case MapNotify:
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map_win (dpy, ev.xmap.window);
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break;
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case UnmapNotify:
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unmap_win (dpy, ev.xunmap.window);
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break;
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case ReparentNotify:
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if (ev.xreparent.parent == root)
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add_win (dpy, ev.xreparent.window, 0);
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else
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destroy_win (dpy, ev.xreparent.window, False);
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break;
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case Expose:
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if (ev.xexpose.window == root)
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{
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int more = ev.xexpose.count + 1;
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if (n_expose == size_expose)
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{
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if (expose_rects)
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{
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expose_rects = realloc (expose_rects,
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(size_expose + more) *
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sizeof (XRectangle));
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size_expose += more;
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}
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else
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{
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expose_rects = malloc (more * sizeof (XRectangle));
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size_expose = more;
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}
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}
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expose_rects[n_expose].x = ev.xexpose.x;
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expose_rects[n_expose].y = ev.xexpose.y;
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expose_rects[n_expose].width = ev.xexpose.width;
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expose_rects[n_expose].height = ev.xexpose.height;
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n_expose++;
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if (ev.xexpose.count == 0)
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{
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expose_root (dpy, root, expose_rects, n_expose);
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n_expose = 0;
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}
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}
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break;
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default:
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if (ev.type == damage_event + XDamageNotify)
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damage_win (dpy, (XDamageNotifyEvent *) &ev);
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break;
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}
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} while (XEventsQueued (dpy, QueuedAfterReading));
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if (allDamage)
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{
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paint_all (dpy, allDamage);
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allDamage = None;
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}
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||||
}
|
||||
}
|
||||
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