89 lines
2.5 KiB
Go
89 lines
2.5 KiB
Go
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// Example workarea-struts shows how to find the all of the struts set by
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// top-level clients and apply them to each active monitor to get the true
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// workarea for each monitor.
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//
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// For example, consider a monitor with a 1920x1080 resolution and a panel
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// on the bottom of the desktop 50 pixels tall. The actual workarea for the
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// desktop then, is (0, 0) 1920x1030. (When there is more than one monitor,
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// the x and y coordinates will be adjusted too.)
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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/xinerama"
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"github.com/jezek/xgbutil/xrect"
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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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// Wrap the root window in a nice Window type.
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root := xwindow.New(X, X.RootWin())
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// Get the geometry of the root window.
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rgeom, err := root.Geometry()
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if err != nil {
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log.Fatal(err)
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}
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// Get the rectangles for each of the active physical heads.
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// These are returned sorted in order from left to right and then top
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// to bottom.
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// But first check if Xinerama is enabled. If not, use root geometry.
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var heads xinerama.Heads
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if X.ExtInitialized("XINERAMA") {
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heads, err = xinerama.PhysicalHeads(X)
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if err != nil {
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log.Fatal(err)
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}
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} else {
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heads = xinerama.Heads{rgeom}
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}
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// Fetch the list of top-level client window ids currently managed
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// by the running window manager.
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clients, 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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// Output the head geometry before modifying them.
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fmt.Println("Workarea for each head:")
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for i, head := range heads {
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fmt.Printf("\tHead #%d: %s\n", i+1, head)
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}
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// For each client, check to see if it has struts, and if so, apply
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// them to our list of head rectangles.
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for _, clientid := range clients {
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strut, err := ewmh.WmStrutPartialGet(X, clientid)
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if err != nil { // no struts for this client
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continue
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}
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// Apply the struts to our heads.
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// This modifies 'heads' in place.
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xrect.ApplyStrut(heads, uint(rgeom.Width()), uint(rgeom.Height()),
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strut.Left, strut.Right, strut.Top, strut.Bottom,
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strut.LeftStartY, strut.LeftEndY,
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strut.RightStartY, strut.RightEndY,
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strut.TopStartX, strut.TopEndX,
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strut.BottomStartX, strut.BottomEndX)
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}
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// Now output the head geometry again after modification.
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fmt.Println("Workarea for each head after applying struts:")
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for i, head := range heads {
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fmt.Printf("\tHead #%d: %s\n", i+1, head)
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}
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}
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