1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
# Phase 4 — Input & Focus
---
## Step 4.1 — Click-to-focus and raise
On `ButtonPress` events on managed windows, set focus with
`XSetInputFocus(dpy, win->xwin, RevertToParent, CurrentTime)` and raise
the window with `XRaiseWindow()`.
Register for `ButtonPressMask` on all managed windows using a passive
grab:
```c
XGrabButton(dpy, AnyButton, AnyModifier, win->xwin, True,
ButtonPressMask, GrabModeSync, GrabModeAsync, None, None);
```
On `ButtonPress`, set focus, raise, then `XAllowEvents(dpy, ReplayPointer,
CurrentTime)` to pass the click through to the client.
**Verify:** Click on `xterm` — it receives focus and comes to front.
Type in it. Click `xeyes` — it comes to front. Focus switching works.
---
## Step 4.2 — Window dragging with Mod+Click
Grab `Mod4 + Button1` (Super+Click) on the root window. On press, start
tracking a drag. On motion, `XMoveWindow()` the client and update the
stored position. On release, stop.
```c
XGrabButton(dpy, Button1, Mod4Mask, root, True,
ButtonPressMask | ButtonReleaseMask | PointerMotionMask,
GrabModeAsync, GrabModeAsync, None, None);
```
**Verify:** Super+Click and drag moves windows around inside Xephyr.
Release drops them. The composited view updates in real-time.
---
## Step 4.3 — Window resizing with Mod+RightClick
Same pattern as dragging but with `Mod4 + Button3`. On motion, call
`XResizeWindow()`. Re-obtain the pixmap and texture after resize.
**Verify:** Super+RightClick and drag resizes windows. The texture
updates to show the new content.
|
