Improvement: Change fading mechanism

- Change fading mechanism for better modularity. Remove fade queue and
  use members in struct _win to record fading data. In contrast to
  previous commits, this one actually could make the program slower (but
  very slightly, hardly noticeable if your CPU is anywhere close to AMD
  K7). As this commit changes lots of things, bugs are to be expected.

- Currently -F does not do its job. -f actually equals -fF. (While in
  the past -F equals nothing and -f is just -f.) A fix will be made
  soon. I suppose it isn't hard.

- Add a preprocessor function paint_preprocess() and move all
  preprocessing code in paint_all() to it.

- Add window flag support but currently unused.

- Add DamageNotify handling to ev_window().

- I'm considering removing HAS_NAME_WINDOW_PIXMAP = 0 support as I
  couldn't see what it is good for. Nor do I know what CAN_DO_USABLE
  does. Basically all my changes ignore these cases.
This commit is contained in:
Richard Grenville
2012-09-19 20:49:16 +08:00
parent e7da88890d
commit 778a8b177c
2 changed files with 268 additions and 296 deletions

View File

@@ -17,7 +17,6 @@
struct timeval time_start = { 0, 0 };
win *list;
fade *fades;
Display *dpy;
int scr;
@@ -97,10 +96,12 @@ int shadow_offset_x = -15;
int shadow_offset_y = -15;
double shadow_opacity = .75;
double fade_in_step = 0.028;
double fade_out_step = 0.03;
int fade_delta = 10;
int fade_time = 0;
/// How much to fade in in a single fading step.
opacity_t fade_in_step = 0.028 * OPAQUE;
/// How much to fade out in a single fading step.
opacity_t fade_out_step = 0.03 * OPAQUE;
unsigned long fade_delta = 10;
unsigned long fade_time = 0;
Bool fade_trans = False;
Bool clear_shadow = False;
@@ -125,7 +126,13 @@ Bool synchronize = False;
* Fades
*/
static int
/**
* Get current system clock in milliseconds.
*
* The return type must be unsigned long because so many milliseconds have
* passed since the epoch.
*/
static unsigned long
get_time_in_milliseconds() {
struct timeval tv;
@@ -134,153 +141,70 @@ get_time_in_milliseconds() {
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
static fade *
find_fade(win *w) {
fade *f;
for (f = fades; f; f = f->next) {
if (f->w == w) return f;
}
return 0;
}
static void
dequeue_fade(Display *dpy, fade *f) {
fade **prev;
for (prev = &fades; *prev; prev = &(*prev)->next) {
if (*prev == f) {
*prev = f->next;
if (f->callback) {
(*f->callback)(dpy, f->w);
}
free(f);
break;
}
}
}
static void
cleanup_fade(Display *dpy, win *w) {
fade *f = find_fade (w);
if (f) {
dequeue_fade(dpy, f);
}
}
static void
enqueue_fade(Display *dpy, fade *f) {
if (!fades) {
fade_time = get_time_in_milliseconds() + fade_delta;
}
f->next = fades;
fades = f;
}
static void
set_fade(Display *dpy, win *w, double start,
double finish, double step,
void(*callback) (Display *dpy, win *w),
Bool exec_callback, Bool override) {
fade *f;
f = find_fade(w);
if (!f) {
f = malloc(sizeof(fade));
f->next = 0;
f->w = w;
f->cur = start;
enqueue_fade(dpy, f);
} else if (!override) {
return;
} else {
if (exec_callback && f->callback) {
(*f->callback)(dpy, f->w);
}
}
if (finish < 0) finish = 0;
if (finish > 1) finish = 1;
f->finish = finish;
if (f->cur < finish) {
f->step = step;
} else if (f->cur > finish) {
f->step = -step;
}
f->callback = callback;
set_opacity(dpy, w, f->cur * OPAQUE);
/* fading windows need to be drawn, mark
them as damaged. when a window maps,
if it tries to fade in but it already
at the right opacity (map/unmap/map fast)
then it will never get drawn without this
until it repaints */
w->damaged = 1;
}
/**
* Get the time left before next fading point.
*
* In milliseconds.
*/
static int
fade_timeout(void) {
int now;
int delta;
int diff = fade_delta - get_time_in_milliseconds() + fade_time;
if (!fades) return -1;
if (diff < 0)
diff = 0;
now = get_time_in_milliseconds();
delta = fade_time - now;
if (delta < 0) delta = 0;
return delta;
return diff;
}
/**
* Run fading on a window.
*
* @param steps steps of fading
*/
static void
run_fades(Display *dpy) {
int now = get_time_in_milliseconds();
fade *next = fades;
int steps;
Bool need_dequeue;
if (fade_time - now > 0) return;
steps = 1 + (now - fade_time) / fade_delta;
while (next) {
fade *f = next;
win *w = f->w;
next = f->next;
f->cur += f->step * steps;
if (f->cur >= 1) {
f->cur = 1;
} else if (f->cur < 0) {
f->cur = 0;
}
w->opacity = f->cur * OPAQUE;
need_dequeue = False;
if (f->step > 0) {
if (f->cur >= f->finish) {
w->opacity = f->finish * OPAQUE;
need_dequeue = True;
}
} else {
if (f->cur <= f->finish) {
w->opacity = f->finish * OPAQUE;
need_dequeue = True;
}
}
determine_mode(dpy, w);
/* Must do this last as it might
destroy f->w in callbacks */
if (need_dequeue) dequeue_fade(dpy, f);
run_fade(Display *dpy, win *w, unsigned steps) {
// If we reach target opacity, set fade_fin so the callback gets
// executed
if (w->opacity == w->opacity_tgt) {
w->fade_fin = True;
return;
}
fade_time = now + fade_delta;
if (!w->fade)
w->opacity = w->opacity_tgt;
else if (steps) {
// Use double below because opacity_t will probably overflow during
// calculations
if (w->opacity < w->opacity_tgt)
w->opacity = normalize_d_range(
(double) w->opacity + (double) fade_in_step * steps,
0.0, w->opacity_tgt);
else
w->opacity = normalize_d_range(
(double) w->opacity - (double) fade_out_step * steps,
w->opacity_tgt, OPAQUE);
}
if (w->opacity == w->opacity_tgt) {
w->fade_fin = True;
return;
}
w->fade_fin = False;
}
/**
* Set fade callback of a window, and possibly execute the previous
* callback.
*
* @param exec_callback whether the previous callback is to be executed
*/
static void
set_fade_callback(Display *dpy, win *w,
void (*callback) (Display *dpy, win *w), Bool exec_callback) {
if (exec_callback && w->fade_callback)
(w->fade_callback)(dpy, w);
w->fade_callback = callback;
}
/**
@@ -1003,62 +927,39 @@ get_frame_extents(Display *dpy, Window w,
}
}
static void
paint_all(Display *dpy, XserverRegion region) {
static win *
paint_preprocess(Display *dpy, win *list) {
win *w;
win *t = 0;
win *t = NULL, *next = NULL;
// Sounds like the timeout in poll() frequently does not work
// accurately, asking it to wait to 20ms, and often it would wait for
// 19ms, so the step value has to be rounded.
unsigned steps = roundl((double) (get_time_in_milliseconds() - fade_time) / fade_delta);
if (!region) {
region = get_screen_region(dpy);
}
// Reset fade_time
fade_time = get_time_in_milliseconds();
#ifdef MONITOR_REPAINT
root_buffer = root_picture;
#else
if (!root_buffer) {
Pixmap root_pixmap = XCreatePixmap(
dpy, root, root_width, root_height,
DefaultDepth(dpy, scr));
for (w = list; w; w = next) {
// In case calling the fade callback function destroys this window
next = w->next;
opacity_t opacity_old = w->opacity;
root_buffer = XRenderCreatePicture(dpy, root_pixmap,
XRenderFindVisualFormat(dpy, DefaultVisual(dpy, scr)),
0, 0);
XFreePixmap(dpy, root_pixmap);
}
#endif
XFixesSetPictureClipRegion(dpy, root_picture, 0, 0, region);
#ifdef MONITOR_REPAINT
XRenderComposite(
dpy, PictOpSrc, black_picture, None,
root_picture, 0, 0, 0, 0, 0, 0,
root_width, root_height);
#endif
#ifdef DEBUG_REPAINT
printf("paint:");
#endif
for (w = list; w; w = w->next) {
#if CAN_DO_USABLE
if (!w->usable) continue;
#endif
/* never painted, ignore it */
if (!w->damaged) continue;
// Run fading
run_fade(dpy, w, steps);
/* if invisible, ignore it */
if (w->a.x + w->a.width < 1 || w->a.y + w->a.height < 1
// Give up if it's not damaged or invisible
if (!w->damaged
|| w->a.x + w->a.width < 1 || w->a.y + w->a.height < 1
|| w->a.x >= root_width || w->a.y >= root_height) {
check_fade_fin(dpy, w);
continue;
}
#ifdef DEBUG_REPAINT
printf(" %#010lx", w->id);
#endif
// Fetch the picture and pixmap if needed
if (!w->picture) {
XRenderPictureAttributes pa;
XRenderPictFormat *format;
@@ -1078,6 +979,7 @@ paint_all(Display *dpy, XserverRegion region) {
dpy, draw, format, CPSubwindowMode, &pa);
}
// Fetch bounding region and extents if needed
if (!w->border_size) {
w->border_size = border_size(dpy, w);
}
@@ -1086,6 +988,17 @@ paint_all(Display *dpy, XserverRegion region) {
w->extents = win_extents(dpy, w);
}
// If opacity changes
if (w->opacity != opacity_old) {
determine_mode(dpy, w);
add_damage_win(dpy, w);
}
if (!w->opacity) {
check_fade_fin(dpy, w);
continue;
}
// Rebuild alpha_pict only if necessary
if (OPAQUE != w->opacity
&& (!w->alpha_pict || w->opacity != w->opacity_cur)) {
@@ -1137,15 +1050,48 @@ paint_all(Display *dpy, XserverRegion region) {
t = w;
}
#ifdef DEBUG_REPAINT
printf("\n");
fflush(stdout);
return t;
}
static void
paint_all(Display *dpy, XserverRegion region, win *t) {
win *w;
if (!region) {
region = get_screen_region(dpy);
}
#ifdef MONITOR_REPAINT
root_buffer = root_picture;
#else
if (!root_buffer) {
Pixmap root_pixmap = XCreatePixmap(
dpy, root, root_width, root_height,
DefaultDepth(dpy, scr));
root_buffer = XRenderCreatePicture(dpy, root_pixmap,
XRenderFindVisualFormat(dpy, DefaultVisual(dpy, scr)),
0, 0);
XFreePixmap(dpy, root_pixmap);
}
#endif
XFixesSetPictureClipRegion(dpy, root_buffer, 0, 0, region);
XFixesSetPictureClipRegion(dpy, root_picture, 0, 0, region);
#ifdef MONITOR_REPAINT
XRenderComposite(
dpy, PictOpSrc, black_picture, None,
root_picture, 0, 0, 0, 0, 0, 0,
root_width, root_height);
#endif
paint_root(dpy);
#ifdef DEBUG_REPAINT
printf("paint:");
#endif
for (w = t; w; w = w->prev_trans) {
int x, y, wid, hei;
@@ -1161,6 +1107,10 @@ paint_all(Display *dpy, XserverRegion region) {
hei = w->a.height;
#endif
#ifdef DEBUG_REPAINT
printf(" %#010lx", w->id);
#endif
// Allow shadow to be painted anywhere in the damaged region
XFixesSetPictureClipRegion(dpy, root_buffer, 0, 0, region);
@@ -1226,8 +1176,15 @@ paint_all(Display *dpy, XserverRegion region) {
}
XFixesDestroyRegion(dpy, paint_reg);
check_fade_fin(dpy, w);
}
#ifdef DEBUG_REPAINT
printf("\n");
fflush(stdout);
#endif
XFixesDestroyRegion(dpy, region);
if (root_buffer != root_picture) {
@@ -1415,18 +1372,12 @@ map_win(Display *dpy, Window id,
w->a.map_state = IsViewable;
w->window_type = determine_wintype(dpy, w->id, w->id);
// Window type change could affect shadow
{
Bool shadow_old = w->shadow;
determine_shadow(dpy, w);
if (w->shadow != shadow_old) {
calc_shadow_geometry(dpy, w);
if (w->extents) {
free_region(dpy, &w->extents);
w->extents = win_extents(dpy, w);
}
}
}
// Window type change could affect shadow and fade
determine_shadow(dpy, w);
determine_fade(dpy, w);
// Determine mode here just in case the colormap changes
determine_mode(dpy, w);
#ifdef DEBUG_WINTYPE
printf("map_win(): window %#010lx type %s\n",
@@ -1461,22 +1412,18 @@ map_win(Display *dpy, Window id,
recheck_focus(dpy);
}
// Fading in
calc_opacity(dpy, w, True);
calc_dim(dpy, w);
set_fade_callback(dpy, w, NULL, True);
determine_mode(dpy, w);
calc_dim(dpy, w);
#if CAN_DO_USABLE
w->damage_bounds.x = w->damage_bounds.y = 0;
w->damage_bounds.width = w->damage_bounds.height = 0;
#endif
w->damaged = 0;
w->damaged = 1;
if (fade && win_type_fade[w->window_type]) {
set_fade(
dpy, w, 0, get_opacity_percent(dpy, w),
fade_in_step, 0, True, True);
}
/* if any configure events happened while
the window was unmapped, then configure
@@ -1508,12 +1455,10 @@ finish_unmap_win(Display *dpy, win *w) {
free_picture(dpy, &w->shadow_pict);
}
#if HAS_NAME_WINDOW_PIXMAP
static void
unmap_callback(Display *dpy, win *w) {
finish_unmap_win(dpy, w);
}
#endif
static void
unmap_win(Display *dpy, Window id, Bool fade) {
@@ -1523,6 +1468,10 @@ unmap_win(Display *dpy, Window id, Bool fade) {
w->a.map_state = IsUnmapped;
// Fading out
w->opacity_tgt = 0;
set_fade_callback(dpy, w, unmap_callback, False);
// don't care about properties anymore
// Will get BadWindow if the window is destroyed
set_ignore(dpy, NextRequest(dpy));
@@ -1532,14 +1481,6 @@ unmap_win(Display *dpy, Window id, Bool fade) {
set_ignore(dpy, NextRequest(dpy));
XSelectInput(dpy, w->client_win, 0);
}
#if HAS_NAME_WINDOW_PIXMAP
if (w->pixmap && fade && win_type_fade[w->window_type]) {
set_fade(dpy, w, get_opacity_percent(dpy, w), 0.0,
fade_out_step, unmap_callback, False, True);
} else
#endif
finish_unmap_win(dpy, w);
}
static opacity_t
@@ -1594,15 +1535,6 @@ determine_mode(Display *dpy, win *w) {
add_damage_win(dpy, w);
}
static void
set_opacity(Display *dpy, win *w, opacity_t opacity) {
// Do nothing if the opacity does not change
if (w->opacity == opacity) return;
w->opacity = opacity;
determine_mode(dpy, w);
}
/**
* Calculate and set the opacity of a window.
*
@@ -1650,7 +1582,7 @@ calc_opacity(Display *dpy, win *w, Bool refetch_prop) {
opacity = inactive_opacity;
}
set_opacity(dpy, w, opacity);
w->opacity_tgt = opacity;
}
static void
@@ -1670,11 +1602,32 @@ calc_dim(Display *dpy, win *w) {
}
/**
* Determine if a window should have shadow.
* Determine if a window should fade on opacity change.
*/
static void
determine_fade(Display *dpy, win *w) {
w->fade = win_type_fade[w->window_type];
}
/**
* Determine if a window should have shadow, and update things depending
* on shadow state.
*/
static void
determine_shadow(Display *dpy, win *w) {
Bool shadow_old = w->shadow;
w->shadow = win_type_shadow[w->window_type];
// Window extents need update on shadow state change
if (w->shadow != shadow_old) {
// Shadow geometry currently doesn't change on shadow state change
// calc_shadow_geometry(dpy, w);
if (w->extents) {
free_region(dpy, &w->extents);
w->extents = win_extents(dpy, w);
}
}
}
/**
@@ -1776,9 +1729,13 @@ add_win(Display *dpy, Window id, Window prev, Bool override_redirect) {
new->shadow_dy = 0;
new->shadow_width = 0;
new->shadow_height = 0;
new->opacity = OPAQUE;
new->opacity = 0;
new->opacity_tgt = 0;
new->opacity_cur = OPAQUE;
new->opacity_prop = OPAQUE;
new->fade = False;
new->fade_callback = NULL;
new->fade_fin = False;
new->alpha_pict = None;
new->frame_opacity = 1.0;
new->frame_opacity_cur = 1.0;
@@ -1976,7 +1933,6 @@ finish_destroy_win(Display *dpy, Window id) {
free_picture(dpy, &w->shadow_pict);
free_damage(dpy, &w->damage);
cleanup_fade(dpy, w);
free(w);
break;
}
@@ -1994,17 +1950,12 @@ static void
destroy_win(Display *dpy, Window id, Bool fade) {
win *w = find_win(dpy, id);
if (w) w->destroyed = True;
if (w) {
w->destroyed = True;
#if HAS_NAME_WINDOW_PIXMAP
if (w && w->pixmap && fade && win_type_fade[w->window_type]) {
set_fade(dpy, w, get_opacity_percent(dpy, w),
0.0, fade_out_step, destroy_callback,
False, True);
} else
#endif
{
finish_destroy_win(dpy, id);
// Fading out the window
w->opacity_tgt = 0;
set_fade_callback(dpy, w, destroy_callback, False);
}
}
@@ -2273,6 +2224,8 @@ ev_window(XEvent *ev) {
return ev->xcreatewindow.window;
case ConfigureNotify:
return ev->xconfigure.window;
case DestroyNotify:
return ev->xdestroywindow.window;
case MapNotify:
return ev->xmap.window;
case UnmapNotify:
@@ -2748,6 +2701,7 @@ main(int argc, char **argv) {
double shadow_red = 0.0;
double shadow_green = 0.0;
double shadow_blue = 0.0;
win *t;
gettimeofday(&time_start, NULL);
@@ -2792,16 +2746,10 @@ main(int argc, char **argv) {
}
break;
case 'I':
fade_in_step = atof(optarg);
if (fade_in_step <= 0) {
fade_in_step = 0.01;
}
fade_in_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'O':
fade_out_step = atof(optarg);
if (fade_out_step <= 0) {
fade_out_step = 0.01;
}
fade_out_step = normalize_d(atof(optarg)) * OPAQUE;
break;
case 'c':
for (i = 0; i < NUM_WINTYPES; ++i) {
@@ -2882,6 +2830,8 @@ main(int argc, char **argv) {
track_focus = True;
}
fade_time = get_time_in_milliseconds();
dpy = XOpenDisplay(display);
if (!dpy) {
fprintf(stderr, "Can't open display\n");
@@ -2994,13 +2944,13 @@ main(int argc, char **argv) {
ufd.fd = ConnectionNumber(dpy);
ufd.events = POLLIN;
paint_all(dpy, None);
t = paint_preprocess(dpy, list);
paint_all(dpy, None, t);
for (;;) {
do {
if (!QLength(dpy)) {
if (poll(&ufd, 1, fade_timeout()) == 0) {
run_fades(dpy);
break;
}
}
@@ -3009,9 +2959,10 @@ main(int argc, char **argv) {
ev_handle((XEvent *)&ev);
} while (QLength(dpy));
t = paint_preprocess(dpy, list);
if (all_damage) {
static int paint;
paint_all(dpy, all_damage);
paint_all(dpy, all_damage, t);
paint++;
XSync(dpy, False);
all_damage = None;