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fix BadMatch error when embedding on some windows

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When embedded, st fails with BadMatch error if the embedder's window has
non-default colormap/depth/visual.  This commit fixes that by creating
st's window inside root and then reparent it into embedder.

The reference window for dc.gc is also changed to match root's visuals.

A similar commit had been made for dmenu[1].
See this issue[2] on github for context.

[1]: https://git.suckless.org/dmenu/commit/0fe460dbd469a1d5b6a7140d0e1801935e4a923b.html
[2]: https://github.com/phillbush/xfiles/issues/47

Ref.
https://git.suckless.org/st/commit/a0274bc20e11d8672bb2953fdd1d3010c0e708c5.html
This commit is contained in:
Bakkeby 2024-08-09 22:06:40 +02:00
parent 714fcffaa8
commit 8a024a15b0
2 changed files with 8 additions and 5 deletions
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2
README.md
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@ -1,4 +1,4 @@
Similar to [dwm-flexipatch](https://github.com/bakkeby/dwm-flexipatch) this st 0.9.2 (5dbcca4, 2024-05-01) project has a different take on st patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more.
Similar to [dwm-flexipatch](https://github.com/bakkeby/dwm-flexipatch) this st 0.9.2 (a0274bc, 2024-08-09) project has a different take on st patching. It uses preprocessor directives to decide whether or not to include a patch during build time. Essentially this means that this build, for better or worse, contains both the patched _and_ the original code. The aim being that you can select which patches to include and the build will contain that code and nothing more.
For example to include the `alpha` patch then you would only need to flip this setting from 0 to 1 in [patches.h](https://github.com/bakkeby/st-flexipatch/blob/master/patches.def.h):
```c

11
x.c
View File

@ -1426,7 +1426,7 @@ xinit(int cols, int rows)
#elif !SWAPMOUSE_PATCH
Cursor cursor;
#endif // HIDECURSOR_PATCH
Window parent;
Window parent, root;
pid_t thispid = getpid();
#if !SWAPMOUSE_PATCH
XColor xmousefg, xmousebg;
@ -1524,11 +1524,12 @@ xinit(int cols, int rows)
xw.attrs.event_mask |= PointerMotionMask;
#endif // OPENURLONCLICK_PATCH
root = XRootWindow(xw.dpy, xw.scr);
#if !ALPHA_PATCH
if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
parent = XRootWindow(xw.dpy, xw.scr);
parent = root;
#endif // ALPHA_PATCH
xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
xw.win = XCreateWindow(xw.dpy, root, xw.l, xw.t,
#if ALPHA_PATCH
win.w, win.h, 0, xw.depth, InputOutput,
#else
@ -1536,6 +1537,8 @@ xinit(int cols, int rows)
#endif // ALPHA_PATCH
xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
| CWEventMask | CWColormap, &xw.attrs);
if (parent != root)
XReparentWindow(xw.dpy, xw.win, parent, xw.l, xw.t);
memset(&gcvalues, 0, sizeof(gcvalues));
gcvalues.graphics_exposures = False;
@ -1548,7 +1551,7 @@ xinit(int cols, int rows)
#endif // SINGLE_DRAWABLE_BUFFER_PATCH
dc.gc = XCreateGC(xw.dpy, xw.buf, GCGraphicsExposures, &gcvalues);
#else
dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
dc.gc = XCreateGC(xw.dpy, xw.win, GCGraphicsExposures,
&gcvalues);
#if SINGLE_DRAWABLE_BUFFER_PATCH
xw.buf = xw.win;