Display *dpy;
Window window;
XWindowAttributes xgwa;
+ int delay;
Pixmap b, ba; /* double-buffer to reduce flicker */
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
XdbeBackBuffer backb;
+ Bool dbeclear_p;
#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
GC draw_gc; /* most of the balls */
Bool random_sizes_p; /* Whether balls should be various sizes up to max. */
Bool shake_p; /* Whether to mess with gravity when things settle. */
Bool dbuf; /* Whether we're using double buffering. */
- Bool dbeclear_p; /* ? */
float shake_threshold;
int time_since_shake;
int collision_count;
char fps_str[1024];
+ int time_tick;
+ struct timeval last_time;
+
} b_state;
static void
window_origin (Display *dpy, Window window, int *x, int *y)
{
- Window root, parent, *kids;
- unsigned int nkids;
- XWindowAttributes xgwa;
- int wx, wy;
- XGetWindowAttributes (dpy, window, &xgwa);
-
- wx = xgwa.x;
- wy = xgwa.y;
-
- kids = 0;
- *x = 0;
- *y = 0;
-
- if (XQueryTree (dpy, window, &root, &parent, &kids, &nkids))
- {
- if (parent && parent != root)
- {
- int px, py;
- window_origin (dpy, parent, &px, &py);
- wx += px;
- wy += py;
- }
- }
- if (kids) XFree (kids);
- *x = wx;
- *y = wy;
+ XTranslateCoordinates (dpy, window, RootWindow (dpy, DefaultScreen (dpy)),
+ 0, 0, x, y, &window);
}
/* Initialize the state structure and various X data.
*/
-static b_state *
-init_balls (Display *dpy, Window window)
+static void *
+fluidballs_init (Display *dpy, Window window)
{
int i;
float extx, exty;
XGCValues gcv;
state->dpy = dpy;
-
state->window = window;
+ state->delay = get_integer_resource (dpy, "delay", "Integer");
check_window_moved (state);
- state->dbuf = get_boolean_resource ("doubleBuffer", "Boolean");
- state->dbeclear_p = get_boolean_resource ("useDBEClear", "Boolean");
+ state->dbuf = get_boolean_resource (dpy, "doubleBuffer", "Boolean");
+
+# ifdef HAVE_COCOA /* Don't second-guess Quartz's double-buffering */
+ state->dbuf = False;
+# endif
if (state->dbuf)
{
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ state->dbeclear_p = get_boolean_resource (dpy, "useDBEClear", "Boolean");
if (state->dbeclear_p)
state->b = xdbe_get_backbuffer (dpy, window, XdbeBackground);
else
/* Select ButtonRelease events on the external window, if no other app has
already selected it (only one app can select it at a time: BadAccess. */
+#if 0
if (! (state->xgwa.all_event_masks & ButtonReleaseMask))
XSelectInput (state->dpy, state->window,
state->xgwa.your_event_mask | ButtonReleaseMask);
+#endif
- gcv.foreground = get_pixel_resource("foreground", "Foreground",
- state->dpy, state->xgwa.colormap);
- gcv.background = get_pixel_resource("background", "Background",
- state->dpy, state->xgwa.colormap);
+ gcv.foreground = get_pixel_resource(state->dpy, state->xgwa.colormap,
+ "foreground", "Foreground");
+ gcv.background = get_pixel_resource(state->dpy, state->xgwa.colormap,
+ "background", "Background");
state->draw_gc = XCreateGC (state->dpy, state->b,
GCForeground|GCBackground, &gcv);
- gcv.foreground = get_pixel_resource("mouseForeground", "MouseForeground",
- state->dpy, state->xgwa.colormap);
+ gcv.foreground = get_pixel_resource(state->dpy, state->xgwa.colormap,
+ "mouseForeground", "MouseForeground");
state->draw_gc2 = XCreateGC (state->dpy, state->b,
GCForeground|GCBackground, &gcv);
extx = state->xmax - state->xmin;
exty = state->ymax - state->ymin;
- state->count = get_integer_resource ("count", "Count");
+ state->count = get_integer_resource (dpy, "count", "Count");
if (state->count < 1) state->count = 20;
- state->max_radius = get_float_resource ("size", "Size") / 2;
+ state->max_radius = get_float_resource (dpy, "size", "Size") / 2;
if (state->max_radius < 1.0) state->max_radius = 1.0;
- state->random_sizes_p = get_boolean_resource ("random", "Random");
+ state->random_sizes_p = get_boolean_resource (dpy, "random", "Random");
- state->accx = get_float_resource ("wind", "Wind");
+ /* If the initial window size is too small to hold all these balls,
+ make fewer of them...
+ */
+ {
+ float r = (state->random_sizes_p
+ ? state->max_radius * 0.7
+ : state->max_radius);
+ float ball_area = M_PI * r * r;
+ float balls_area = state->count * ball_area;
+ float window_area = state->xgwa.width * state->xgwa.height;
+ window_area *= 0.75; /* don't pack it completely full */
+ if (balls_area > window_area)
+ state->count = window_area / ball_area;
+ }
+
+ state->accx = get_float_resource (dpy, "wind", "Wind");
if (state->accx < -1.0 || state->accx > 1.0) state->accx = 0;
- state->accy = get_float_resource ("gravity", "Gravity");
+ state->accy = get_float_resource (dpy, "gravity", "Gravity");
if (state->accy < -1.0 || state->accy > 1.0) state->accy = 0.01;
- state->e = get_float_resource ("elasticity", "Elacitcity");
+ state->e = get_float_resource (dpy, "elasticity", "Elacitcity");
if (state->e < 0.2 || state->e > 1.0) state->e = 0.97;
- state->tc = get_float_resource ("timeScale", "TimeScale");
+ state->tc = get_float_resource (dpy, "timeScale", "TimeScale");
if (state->tc <= 0 || state->tc > 10) state->tc = 1.0;
- state->shake_p = get_boolean_resource ("shake", "Shake");
- state->shake_threshold = get_float_resource ("shakeThreshold",
+ state->shake_p = get_boolean_resource (dpy, "shake", "Shake");
+ state->shake_threshold = get_float_resource (dpy, "shakeThreshold",
"ShakeThreshold");
- state->fps_p = get_boolean_resource ("doFPS", "DoFPS");
+ state->fps_p = get_boolean_resource (dpy, "doFPS", "DoFPS");
if (state->fps_p)
{
XFontStruct *font;
- char *fontname = get_string_resource ("font", "Font");
+ char *fontname = get_string_resource (dpy, "font", "Font");
const char *def_font = "fixed";
if (!fontname || !*fontname) fontname = (char *)def_font;
font = XLoadQueryFont (dpy, fontname);
if (!font) font = XLoadQueryFont (dpy, def_font);
if (!font) exit(-1);
gcv.font = font->fid;
- gcv.foreground = get_pixel_resource("textColor", "Foreground",
- state->dpy, state->xgwa.colormap);
+ gcv.foreground = get_pixel_resource(state->dpy, state->xgwa.colormap,
+ "textColor", "Foreground");
state->font_gc = XCreateGC(dpy, state->b,
GCFont|GCForeground|GCBackground, &gcv);
state->font_height = font->ascent + font->descent;
static void
check_wall_clock (b_state *state, float max_d)
{
- static int tick = 0;
state->frame_count++;
- if (tick++ > 20) /* don't call gettimeofday() too often -- it's slow. */
+ if (state->time_tick++ > 20) /* don't call gettimeofday() too often -- it's slow. */
{
struct timeval now;
- static struct timeval last = { 0, 0 };
# ifdef GETTIMEOFDAY_TWO_ARGS
struct timezone tzp;
gettimeofday(&now, &tzp);
gettimeofday(&now);
# endif
- if (last.tv_sec == 0)
- last = now;
+ if (state->last_time.tv_sec == 0)
+ state->last_time = now;
- tick = 0;
- if (now.tv_sec == last.tv_sec)
+ state->time_tick = 0;
+ if (now.tv_sec == state->last_time.tv_sec)
return;
- state->time_since_shake += (now.tv_sec - last.tv_sec);
+ state->time_since_shake += (now.tv_sec - state->last_time.tv_sec);
if (state->fps_p)
{
float elapsed = ((now.tv_sec + (now.tv_usec / 1000000.0)) -
- (last.tv_sec + (last.tv_usec / 1000000.0)));
+ (state->last_time.tv_sec + (state->last_time.tv_usec / 1000000.0)));
float fps = state->frame_count / elapsed;
float cps = state->collision_count / elapsed;
state->frame_count = 0;
state->collision_count = 0;
- last = now;
+ state->last_time = now;
}
}
int x1b, x2b, y1b, y2b;
float max_d = 0;
+#ifdef HAVE_COCOA /* Don't second-guess Quartz's double-buffering */
+ XClearWindow (state->dpy, state->b);
+#endif
+
for (a=1; a <= state->count; a++)
{
GC gc;
x2b = (state->px[a] + state->r[a] - state->xmin);
y2b = (state->py[a] + state->r[a] - state->ymin);
- if (!state->dbeclear_p
+#ifndef HAVE_COCOA /* Don't second-guess Quartz's double-buffering */
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
- || !state->backb
+ if (!state->dbeclear_p || !state->backb)
#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
- )
{
/* if (x1a != x1b || y1a != y1b) -- leaves turds if we optimize this */
{
0, 360*64);
}
}
+#endif /* !HAVE_COCOA */
+
if (state->mouse_ball == a)
gc = state->draw_gc2;
else
state->opy[a] = state->py[a];
}
- if (state->fps_p && state->dbeclear_p)
+ if (state->fps_p
+#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
+ && (state->backb ? state->dbeclear_p : 1)
+#endif /* HAVE_DOUBLE_BUFFER_EXTENSION */
+ )
draw_fps_string(state);
#ifdef HAVE_DOUBLE_BUFFER_EXTENSION
/* Handle X events, specifically, allow a ball to be picked up with the mouse.
*/
-static void
-handle_events (b_state *state)
+static Bool
+fluidballs_event (Display *dpy, Window window, void *closure, XEvent *event)
{
- XSync (state->dpy, False);
- while (XPending (state->dpy))
+ b_state *state = (b_state *) closure;
+
+ if (event->xany.type == ButtonPress)
{
- XEvent event;
- XNextEvent (state->dpy, &event);
- if (event.xany.type == ButtonPress)
- {
- int i;
- float fmx = event.xbutton.x_root;
- float fmy = event.xbutton.y_root;
- if (state->mouse_ball != 0) /* second down-click? drop the ball. */
- {
- state->mouse_ball = 0;
- return;
- }
- else
- for (i=1; i <= state->count; i++)
- {
- float d = ((state->px[i] - fmx) * (state->px[i] - fmx) +
- (state->py[i] - fmy) * (state->py[i] - fmy));
- float r = state->r[i];
- if (d < r*r)
- {
- state->mouse_ball = i;
- return;
- }
- }
- }
- else if (event.xany.type == ButtonRelease) /* drop the ball */
+ int i, rx, ry;
+ XTranslateCoordinates (dpy, window, RootWindow (dpy, DefaultScreen(dpy)),
+ event->xbutton.x, event->xbutton.y, &rx, &ry,
+ &window);
+
+ if (state->mouse_ball != 0) /* second down-click? drop the ball. */
{
state->mouse_ball = 0;
- return;
- }
- else if (event.xany.type == ConfigureNotify)
- {
- /* This is redundant, since we poll this every iteration. */
- check_window_moved (state);
+ return True;
}
-
- screenhack_handle_event (state->dpy, &event);
+ else
+ for (i=1; i <= state->count; i++)
+ {
+ float d = ((state->px[i] - rx) * (state->px[i] - rx) +
+ (state->py[i] - ry) * (state->py[i] - ry));
+ float r = state->r[i];
+ if (d < r*r)
+ {
+ state->mouse_ball = i;
+ return True;
+ }
+ }
+ return True;
}
+ else if (event->xany.type == ButtonRelease) /* drop the ball */
+ {
+ state->mouse_ball = 0;
+ return True;
+ }
+
+ return False;
+}
+
+static unsigned long
+fluidballs_draw (Display *dpy, Window window, void *closure)
+{
+ b_state *state = (b_state *) closure;
+ repaint_balls(state);
+ update_balls(state);
+ return state->delay;
}
-\f
-char *progclass = "FluidBalls";
+static void
+fluidballs_reshape (Display *dpy, Window window, void *closure,
+ unsigned int w, unsigned int h)
+{
+}
+
+static void
+fluidballs_free (Display *dpy, Window window, void *closure)
+{
+ b_state *state = (b_state *) closure;
+ free (state);
+}
-char *defaults [] = {
+
+static const char *fluidballs_defaults [] = {
".background: black",
+ ".foreground: yellow",
".textColor: yellow",
+ "*mouseForeground: white",
".font: -*-helvetica-*-r-*-*-*-180-*-*-p-*-*-*",
"*delay: 10000",
"*count: 300",
0
};
-XrmOptionDescRec options [] = {
+static XrmOptionDescRec fluidballs_options [] = {
{ "-delay", ".delay", XrmoptionSepArg, 0 },
{ "-count", ".count", XrmoptionSepArg, 0 },
{ "-size", ".size", XrmoptionSepArg, 0 },
{ "-shake", ".shake", XrmoptionNoArg, "True" },
{ "-no-shake", ".shake", XrmoptionNoArg, "False" },
{ "-random", ".random", XrmoptionNoArg, "True" },
+ { "-no-random", ".random", XrmoptionNoArg, "False" },
{ "-nonrandom", ".random", XrmoptionNoArg, "False" },
{ "-db", ".doubleBuffer", XrmoptionNoArg, "True" },
{ "-no-db", ".doubleBuffer", XrmoptionNoArg, "False" },
{ 0, 0, 0, 0 }
};
-void
-screenhack (Display *dpy, Window window)
-{
- b_state *state = init_balls(dpy, window);
- int delay = get_integer_resource ("delay", "Integer");
-
- while (1)
- {
- repaint_balls(state);
- update_balls(state);
- XSync (dpy, False);
- handle_events (state);
- if (delay) usleep (delay);
- }
-}
+XSCREENSAVER_MODULE ("Fluidballs", fluidballs)
projects / xscreensaver / blobdiff