65 lines
1.9 KiB
Go
65 lines
1.9 KiB
Go
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// Example window-names fetches a list of all top-level client windows managed
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// by the currently running window manager, and prints the name and size
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// of each window.
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//
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// This example demonstrates how to use some aspects of the ewmh and icccm
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// packages. It also shows how to use the xwindow package to find the
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// geometry of a client window. In particular, finding the geometry is
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// intelligent, as it includes the geometry of the decorations if they exist.
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package main
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import (
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"fmt"
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"log"
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"github.com/jezek/xgbutil"
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"github.com/jezek/xgbutil/ewmh"
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"github.com/jezek/xgbutil/icccm"
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"github.com/jezek/xgbutil/xwindow"
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)
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func main() {
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// Connect to the X server using the DISPLAY environment variable.
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X, err := xgbutil.NewConn()
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if err != nil {
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log.Fatal(err)
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}
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// Get a list of all client ids.
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clientids, err := ewmh.ClientListGet(X)
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if err != nil {
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log.Fatal(err)
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}
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// Iterate through each client, find its name and find its size.
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for _, clientid := range clientids {
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name, err := ewmh.WmNameGet(X, clientid)
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// If there was a problem getting _NET_WM_NAME or if its empty,
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// try the old-school version.
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if err != nil || len(name) == 0 {
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name, err = icccm.WmNameGet(X, clientid)
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// If we still can't find anything, give up.
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if err != nil || len(name) == 0 {
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name = "N/A"
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}
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}
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// Now find the geometry, including decorations, of the client window.
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// Note that DecorGeometry actually traverses the window tree by
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// issuing QueryTree requests until a top-level window (i.e., its
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// parent is the root window) is found. The geometry of *that* window
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// is then returned.
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dgeom, err := xwindow.New(X, clientid).DecorGeometry()
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if err != nil {
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log.Printf("Could not get geometry for %s (0x%X) because: %s",
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name, clientid, err)
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continue
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}
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fmt.Printf("%s (0x%x)\n", name, clientid)
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fmt.Printf("\tGeometry: %s\n", dgeom)
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}
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}
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