# st

Unnamed repository; edit this file 'description' to name the repository.

| Log | Files | Refs | README | LICENSE

    commit ab7037cb33b4be4d16e3197d907066ed5b8ab16b
    parent f693476365c9383ac83420319dd69372c55f9f50
    Author: Aurélien Aptel <aurelien.aptel@gmail.com>
    Date:   Sat, 11 Sep 2010 16:05:57 +0200

    don't draw if the window is not visible.

    Diffstat:
    Mst.c | 29+++++++++++++++++++++++++----

    1 file changed, 25 insertions(+), 4 deletions(-)
    diff --git a/st.c b/st.c
    @@ -115,6 +115,7 @@ typedef struct {
     	int ch; /* char height */
     	int cw; /* char width  */
     	int hasfocus;
    +	int vis; /* is visible */
     } XWindow;

     typedef struct {
    @@ -187,6 +188,8 @@ static void xloadcols(void);
     static void xseturgency(int);

     static void expose(XEvent *);
    +static void visibility(XEvent *);
    +static void unmap(XEvent *);
     static char* kmap(KeySym);
     static void kpress(XEvent *);
     static void resize(XEvent *);
    @@ -198,8 +201,10 @@ static void bmotion(XEvent *);

     static void (*handler[LASTEvent])(XEvent *) = {
     	[KeyPress] = kpress,
    -	[Expose] = expose,
     	[ConfigureNotify] = resize,
    +	[VisibilityNotify] = visibility,
    +	[UnmapNotify] = unmap,
    +	[Expose] = expose,
     	[FocusIn] = focus,
     	[FocusOut] = focus,
     	[MotionNotify] = bmotion,
    @@ -1211,9 +1216,9 @@ xinit(void) {
     	attrs.background_pixel = dc.col[DefaultBG];
     	attrs.border_pixel = dc.col[DefaultBG];
     	attrs.bit_gravity = NorthWestGravity;
    -	attrs.event_mask = ExposureMask | KeyPressMask
    -		| StructureNotifyMask | FocusChangeMask | PointerMotionMask
    -		| ButtonPressMask | ButtonReleaseMask;
    +	attrs.event_mask = FocusChangeMask | KeyPressMask
    +		| ExposureMask | VisibilityChangeMask | StructureNotifyMask
    +		| PointerMotionMask | ButtonPressMask | ButtonReleaseMask;
     	attrs.colormap = xw.cmap;

     	xw.win = XCreateWindow(xw.dis, XRootWindow(xw.dis, xw.scr), 0, 0,
    @@ -1321,6 +1326,9 @@ draw(int redraw_all) {
     	Glyph base, new;
     	char buf[DRAW_BUF_SIZ];

    +	if(!xw.vis)
    +		return;
    +
     	xclear(0, 0, term.col-1, term.row-1);
     	for(y = 0; y < term.row; y++) {
     		base = term.line[y][0];
    @@ -1358,6 +1366,19 @@ expose(XEvent *ev) {
     }

     void
    +visibility(XEvent *ev) {
    +	XVisibilityEvent *e = &ev->xvisibility;
    +	/* XXX if this goes from 0 to 1, need a full redraw for next Expose,
    +	 * not just a buf copy */
    +	xw.vis = e->state != VisibilityFullyObscured;
    +}
    +
    +void
    +unmap(XEvent *ev) {
    +	xw.vis = 0;
    +}
    +
    +void
     xseturgency(int add) {
     	XWMHints *h = XGetWMHints(xw.dis, xw.win);
     	h->flags = add ? (h->flags | XUrgencyHint) : (h->flags & ~XUrgencyHint);