I follow Freshmeat's fm.announce newsgroup and saw an announcement for tinywm today. It's a small example for a window manager with the usual stuff, like moving, resizing and raising windows. It doesn't have any decorations at all, however, but it wouldn't bee too hard to add.
The entire source code is here:
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// TinyWM (C) 2005 Nick Welch
//
// Use of the works is permitted provided that this instrument
// is retained with the works, so that any entity that uses the
// works is notified of this instrument.
//
// DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.
#include <X11/Xlib.h>
#define MAX(a, b) ((a) > (b) ? (a) : (b))
int main()
{
Display * dpy = XOpenDisplay(0);
if(!dpy) return 1;
Window root = DefaultRootWindow(dpy);
XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("F1")), Mod1Mask, root,
True, GrabModeAsync, GrabModeAsync);
XGrabButton(dpy, 1, Mod1Mask, root, True, ButtonPressMask, GrabModeAsync,
GrabModeAsync, None, None);
XGrabButton(dpy, 3, Mod1Mask, root, True, ButtonPressMask, GrabModeAsync,
GrabModeAsync, None, None);
XWindowAttributes attr;
XButtonEvent start;
XEvent ev;
for(;;)
{
XNextEvent(dpy, &ev);
if(ev.type == KeyPress && ev.xkey.subwindow != None)
XRaiseWindow(dpy, ev.xkey.subwindow);
else if(ev.type == ButtonPress && ev.xbutton.subwindow != None)
{
XGrabPointer(dpy, ev.xbutton.subwindow, True,
PointerMotionMask|ButtonReleaseMask, GrabModeAsync,
GrabModeAsync, None, None, CurrentTime);
XGetWindowAttributes(dpy, ev.xbutton.subwindow, &attr);
start = ev.xbutton;
}
else if(ev.type == MotionNotify)
{
while(XCheckTypedEvent(dpy, MotionNotify, &ev));
int xdiff = ev.xbutton.x_root - start.x_root;
int ydiff = ev.xbutton.y_root - start.y_root;
XMoveResizeWindow(dpy, ev.xmotion.window,
attr.x + (start.button==1 ? xdiff : 0),
attr.y + (start.button==1 ? ydiff : 0),
MAX(1, attr.width + (start.button==3 ? xdiff : 0)),
MAX(1, attr.height + (start.button==3 ? ydiff : 0)));
}
else if(ev.type == ButtonRelease)
XUngrabPointer(dpy, CurrentTime);
}
}
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However, that source seems to be very C99ish, so it wouldn't compile
on my systems GCC (boring old 2.95), so I modified it a bit, mainly
moving some variable declarations to the beginning of blocks:
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// TinyWM (C) 2005 Nick Welch
//
// Use of the works is permitted provided that this instrument
// is retained with the works, so that any entity that uses the
// works is notified of this instrument.
//
// DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.
#include <X11/Xlib.h>
#define MAX(a, b) ((a) > (b) ? (a) : (b))
int main()
{
Window root;
XWindowAttributes attr;
XButtonEvent start;
XEvent ev;
Display * dpy = XOpenDisplay(0);
if(!dpy) return 1;
root = DefaultRootWindow(dpy);
XGrabKey(dpy, XKeysymToKeycode(dpy, XStringToKeysym("F1")), Mod1Mask, root,
True, GrabModeAsync, GrabModeAsync);
XGrabButton(dpy, 1, Mod1Mask, root, True, ButtonPressMask, GrabModeAsync,
GrabModeAsync, None, None);
XGrabButton(dpy, 3, Mod1Mask, root, True, ButtonPressMask, GrabModeAsync,
GrabModeAsync, None, None);
for(;;)
{
XNextEvent(dpy, &ev);
if(ev.type == KeyPress && ev.xkey.subwindow != None)
XRaiseWindow(dpy, ev.xkey.subwindow);
else if(ev.type == ButtonPress && ev.xbutton.subwindow != None)
{
XGrabPointer(dpy, ev.xbutton.subwindow, True,
PointerMotionMask|ButtonReleaseMask, GrabModeAsync,
GrabModeAsync, None, None, CurrentTime);
XGetWindowAttributes(dpy, ev.xbutton.subwindow, &attr);
start = ev.xbutton;
}
else if(ev.type == MotionNotify)
{
int xdiff;
int ydiff;
while(XCheckTypedEvent(dpy, MotionNotify, &ev));
xdiff = ev.xbutton.x_root - start.x_root;
ydiff = ev.xbutton.y_root - start.y_root;
XMoveResizeWindow(dpy, ev.xmotion.window,
attr.x + (start.button==1 ? xdiff : 0),
attr.y + (start.button==1 ? ydiff : 0),
MAX(1, attr.width + (start.button==3 ? xdiff : 0)),
MAX(1, attr.height + (start.button==3 ? ydiff : 0)));
}
else if(ev.type == ButtonRelease)
XUngrabPointer(dpy, CurrentTime);
}
}
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Is this cool, or what?
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