diff options
Diffstat (limited to 'xcompmgr.c')
| -rw-r--r-- | xcompmgr.c | 472 |
1 files changed, 472 insertions, 0 deletions
diff --git a/xcompmgr.c b/xcompmgr.c new file mode 100644 index 0000000..8aa2c94 --- /dev/null +++ b/xcompmgr.c @@ -0,0 +1,472 @@ +#include <stdlib.h> +#include <stdio.h> +#include <X11/Xlib.h> +#include <X11/extensions/Xcomposite.h> +#include <X11/extensions/Xdamage.h> +#include <X11/extensions/Xrender.h> + +typedef struct _win { + struct _win *next; + Window id; + XWindowAttributes a; + int damaged; + int mode; + Damage damage; + Picture picture; + XserverRegion borderSize; + + /* for drawing translucent windows */ + XserverRegion borderClip; + struct _win *prev_trans; +} win; + +win *list; + +Display *dpy; +int scr; +Window root; +Picture rootPicture; +Picture transPicture; +XserverRegion allDamage; + +#define WINDOW_PLAIN 0 +#define WINDOW_DROP 1 +#define WINDOW_TRANS 2 + +win * +find_win (Display *dpy, Window id) +{ + win *w; + + for (w = list; w; w = w->next) + if (w->id == id) + return w; + return 0; +} + +void +paint_root (Display *dpy) +{ + XRenderColor c; + + c.red = c.green = c.blue = 0x8080; + c.alpha = 0xffff; + XRenderFillRectangle (dpy, PictOpSrc, rootPicture, &c, + 0, 0, 32767, 32767); +} + +XserverRegion +border_size (Display *dpy, win *w) +{ + XserverRegion border; + border = XFixesCreateRegionFromWindow (dpy, w->id, WindowRegionBounding); + /* translate this */ + XFixesUnionRegion (dpy, border, border, w->a.x, w->a.y, None, 0, 0); + return border; +} + +void +paint_all (Display *dpy, XserverRegion region) +{ + win *w; + win *t = 0; + + for (w = list; w; w = w->next) + { + Picture mask; + + if (w->a.map_state != IsViewable) + continue; + if (w->mode == WINDOW_TRANS) + { + w->borderClip = XFixesCreateRegion (dpy, 0, 0); + XFixesUnionRegion (dpy, w->borderClip, region, 0, 0, None, 0, 0); + w->prev_trans = t; + t = w; + } + else + { + XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, region); + if (w->borderSize) + XFixesDestroyRegion (dpy, w->borderSize); + w->borderSize = border_size (dpy, w); + XFixesSubtractRegion (dpy, region, region, 0, 0, w->borderSize, 0, 0); + XRenderComposite (dpy, PictOpSrc, w->picture, None, rootPicture, + 0, 0, 0, 0, + w->a.x + w->a.border_width, + w->a.y + w->a.border_width, + w->a.width, + w->a.height); + } + } + XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, region); + paint_root (dpy); + for (w = t; w; w = w->prev_trans) + { + XFixesSetPictureClipRegion (dpy, rootPicture, 0, 0, w->borderClip); + XRenderComposite (dpy, PictOpOver, w->picture, transPicture, rootPicture, + 0, 0, 0, 0, + w->a.x + w->a.border_width, + w->a.y + w->a.border_width, + w->a.width, + w->a.height); + XFixesDestroyRegion (dpy, w->borderClip); + w->borderClip = None; + } + XFixesDestroyRegion (dpy, region); +} + +void +add_damage (Display *dpy, XserverRegion damage) +{ + if (allDamage) + { + XFixesUnionRegion (dpy, allDamage, allDamage, 0, 0, damage, 0, 0); + XFixesDestroyRegion (dpy, damage); + } + else + allDamage = damage; +} + +void +repair_win (Display *dpy, Window id) +{ + win *w = find_win (dpy, id); + XserverRegion parts; + + if (!w) + return; +/* printf ("repair 0x%x\n", w->id); */ + parts = XFixesCreateRegion (dpy, 0, 0); + /* translate region */ + XDamageSubtract (dpy, w->damage, None, parts); + XFixesUnionRegion (dpy, parts, parts, w->a.x, w->a.y, None, 0, 0); + add_damage (dpy, parts); +} + +void +map_win (Display *dpy, Window id) +{ + win *w = find_win (dpy, id); + XserverRegion region; + + if (!w) + return; + w->a.map_state = IsViewable; + w->damage = XDamageCreate (dpy, id, XDamageReportNonEmpty); + region = border_size (dpy, w); + add_damage (dpy, region); +} + +void +unmap_win (Display *dpy, Window id) +{ + win *w = find_win (dpy, id); + + if (!w) + return; + w->a.map_state = IsUnmapped; + if (w->damage != None) + { + XDamageDestroy (dpy, w->damage); + w->damage = None; + } + if (w->borderSize != None) + { + add_damage (dpy, w->borderSize); /* destroys region */ + w->borderSize = None; + } +} + +void +add_win (Display *dpy, Window id, Window prev) +{ + win *new = malloc (sizeof (win)); + win **p; + XWindowAttributes a; + XRenderPictureAttributes pa; + + if (!new) + return; + if (prev) + { + for (p = &list; *p; p = &(*p)->next) + if ((*p)->id == prev) + break; + } + else + p = &list; + new->id = id; + if (!XGetWindowAttributes (dpy, id, &new->a)) + { + free (new); + return; + } + new->damaged = 0; + new->damage = None; + pa.subwindow_mode = IncludeInferiors; + new->picture = XRenderCreatePicture (dpy, id, + XRenderFindVisualFormat (dpy, + new->a.visual), + CPSubwindowMode, + &pa); + + new->borderSize = None; + if (new->a.override_redirect) + new->mode = WINDOW_TRANS; + else + new->mode = WINDOW_DROP; + new->next = *p; + *p = new; + if (new->a.map_state == IsViewable) + map_win (dpy, id); +} + +void +configure_win (Display *dpy, XConfigureEvent *ce) +{ + win *w = find_win (dpy, ce->window); + Window above; + XserverRegion damage = None; + + if (!w) + return; + if (w->a.map_state == IsViewable) + { + damage = XFixesCreateRegion (dpy, 0, 0); + if (w->borderSize != None) + XFixesUnionRegion (dpy, damage, w->borderSize, 0, 0, None, 0, 0); + } + w->a.x = ce->x; + w->a.y = ce->y; + w->a.width = ce->width; + w->a.height = ce->height; + w->a.border_width = ce->border_width; + w->a.override_redirect = ce->override_redirect; + if (w->next) + above = w->next->id; + else + above = None; + if (above != ce->above) + { + win **prev; + + /* unhook */ + for (prev = &list; *prev; prev = &(*prev)->next) + if ((*prev) == w) + break; + *prev = w->next; + + /* rehook */ + for (prev = &list; *prev; prev = &(*prev)->next) + { + if ((*prev)->id == ce->above) + break; + } + w->next = *prev; + *prev = w; + } + if (damage) + { + XserverRegion border = border_size (dpy, w); + XFixesUnionRegion (dpy, damage, damage, 0, 0, border, 0, 0); + add_damage (dpy, damage); + } +} + +void +destroy_win (Display *dpy, Window id, Bool gone) +{ + win **prev, *w; + + for (prev = &list; w = *prev; prev = &w->next) + if (w->id == id) + { + if (!gone) + { + unmap_win (dpy, id); + XRenderFreePicture (dpy, w->picture); + } + *prev = w->next; + free (w); + break; + } +} + +void +dump_win (win *w) +{ + printf ("\t%08x: %d x %d + %d + %d (%d)\n", w->id, + w->a.width, w->a.height, w->a.x, w->a.y, w->a.border_width); +} + +void +dump_wins (void) +{ + win *w; + + printf ("windows:\n"); + for (w = list; w; w = w->next) + dump_win (w); +} + +void +damage_win (Display *dpy, XDamageNotifyEvent *de) +{ + repair_win (dpy, de->drawable); +} + +int +error (Display *dpy, XErrorEvent *ev) +{ + printf ("error %d request %d minor %d\n", + ev->error_code, ev->request_code, ev->minor_code); +} + +void +expose_root (Display *dpy, Window root, XRectangle *rects, int nrects) +{ + XserverRegion region = XFixesCreateRegion (dpy, rects, nrects); + + add_damage (dpy, region); +} + +main () +{ + XEvent ev; + int event_base, error_base; + Window root_return, parent_return; + Window *children; + Pixmap transPixmap; + unsigned int nchildren; + int i; + int damage_event, damage_error; + int xfixes_event, xfixes_error; + XRenderPictureAttributes pa; + XRenderColor c; + XRectangle *expose_rects = 0; + int size_expose = 0; + int n_expose = 0; + + dpy = XOpenDisplay (0); + if (!dpy) + { + fprintf (stderr, "Can't open display\n"); + exit (1); + } + XSetErrorHandler (error); + scr = DefaultScreen (dpy); + root = RootWindow (dpy, scr); + pa.subwindow_mode = IncludeInferiors; + transPixmap = XCreatePixmap (dpy, root, 1, 1, 8); + pa.repeat = True; + transPicture = XRenderCreatePicture (dpy, transPixmap, + XRenderFindStandardFormat (dpy, PictStandardA8), + CPRepeat, + &pa); + c.red = c.green = c.blue = 0; + c.alpha = 0xc0c0; + XRenderFillRectangle (dpy, PictOpSrc, transPicture, &c, 0, 0, 1, 1); + + rootPicture = XRenderCreatePicture (dpy, root, + XRenderFindVisualFormat (dpy, + DefaultVisual (dpy, scr)), + CPSubwindowMode, + &pa); + if (!XCompositeQueryExtension (dpy, &event_base, &error_base)) + { + fprintf (stderr, "No composite extension\n"); + exit (1); + } + if (!XDamageQueryExtension (dpy, &damage_event, &damage_error)) + { + fprintf (stderr, "No damage extension\n"); + exit (1); + } + if (!XFixesQueryExtension (dpy, &xfixes_event, &xfixes_error)) + { + fprintf (stderr, "No XFixes extension\n"); + exit (1); + } + allDamage = None; + XGrabServer (dpy); + XCompositeRedirectSubwindows (dpy, root, CompositeRedirectManual); + paint_root (dpy); + XSelectInput (dpy, root, SubstructureNotifyMask|ExposureMask); + XQueryTree (dpy, root, &root_return, &parent_return, &children, &nchildren); + for (i = 0; i < nchildren; i++) + add_win (dpy, children[i], i ? children[i-1] : None); + XFree (children); + XUngrabServer (dpy); + for (;;) + { +/* dump_wins (); */ + do { + XNextEvent (dpy, &ev); +/* printf ("event %d\n", ev.type); */ + switch (ev.type) { + case CreateNotify: + add_win (dpy, ev.xcreatewindow.window, 0); + break; + case ConfigureNotify: + configure_win (dpy, &ev.xconfigure); + break; + case DestroyNotify: + destroy_win (dpy, ev.xdestroywindow.window, True); + break; + case MapNotify: + map_win (dpy, ev.xmap.window); + break; + case UnmapNotify: + unmap_win (dpy, ev.xunmap.window); + break; + case ReparentNotify: + if (ev.xreparent.parent == root) + add_win (dpy, ev.xreparent.window, 0); + else + destroy_win (dpy, ev.xreparent.window, False); + break; + case Expose: + if (ev.xexpose.window == root) + { + int more = ev.xexpose.count + 1; + if (n_expose == size_expose) + { + if (expose_rects) + { + expose_rects = realloc (expose_rects, + (size_expose + more) * + sizeof (XRectangle)); + size_expose += more; + } + else + { + expose_rects = malloc (more * sizeof (XRectangle)); + size_expose = more; + } + } + expose_rects[n_expose].x = ev.xexpose.x; + expose_rects[n_expose].y = ev.xexpose.y; + expose_rects[n_expose].width = ev.xexpose.width; + expose_rects[n_expose].height = ev.xexpose.height; + n_expose++; + if (ev.xexpose.count == 0) + { + expose_root (dpy, root, expose_rects, n_expose); + n_expose = 0; + } + } + break; + default: + if (ev.type == damage_event + XDamageNotify) + damage_win (dpy, (XDamageNotifyEvent *) &ev); + break; + } + } while (XEventsQueued (dpy, QueuedAfterReading)); + if (allDamage) + { + paint_all (dpy, allDamage); + allDamage = None; + } + } +} |