X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=hacks%2Ffluidballs.c;h=6bab228740d4c38266dfa2fec6fe9b2691c60fbd;hb=4ade52359b6eba3621566dac79793a33aa4c915f;hp=0ce65db3f590bdfd0d44adebed3614ef435e6792;hpb=96a411663168b0ba5432b407a83be55f3df0c802;p=xscreensaver diff --git a/hacks/fluidballs.c b/hacks/fluidballs.c index 0ce65db3..6bab2287 100644 --- a/hacks/fluidballs.c +++ b/hacks/fluidballs.c @@ -36,10 +36,12 @@ typedef struct { 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 */ @@ -70,7 +72,6 @@ typedef struct { 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; @@ -82,6 +83,9 @@ typedef struct { int collision_count; char fps_str[1024]; + int time_tick; + struct timeval last_time; + } b_state; @@ -90,10 +94,11 @@ static void draw_fps_string (b_state *state) { XFillRectangle (state->dpy, state->b, state->erase_gc, - 0, state->xgwa.height - state->font_height, - state->xgwa.width, state->font_height); + 0, state->xgwa.height - state->font_height*3 - 20, + state->xgwa.width, state->font_height*3 + 20); XDrawImageString (state->dpy, state->b, state->font_gc, - 0, state->xgwa.height - state->font_baseline, + 10, state->xgwa.height - state->font_height*2 - + state->font_baseline - 10, state->fps_str, strlen(state->fps_str)); } @@ -103,32 +108,8 @@ draw_fps_string (b_state *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); } @@ -152,7 +133,8 @@ check_window_moved (b_state *state) state->xmin = wx; state->ymin = wy; state->xmax = state->xmin + state->xgwa.width; - state->ymax = state->ymin + state->xgwa.height - state->font_height; + state->ymax = state->ymin + state->xgwa.height - (state->font_height*3) - + (state->font_height ? 22 : 0); if (state->dbuf && (state->ba)) { @@ -174,8 +156,8 @@ check_window_moved (b_state *state) XClearWindow (state->dpy, state->window); else if (state->fps_p && oymax != state->ymax) XFillRectangle (state->dpy, state->b, state->erase_gc, - 0, state->xgwa.height - state->font_height, - state->xgwa.width, state->font_height); + 0, state->xgwa.height - state->font_height*3, + state->xgwa.width, state->font_height*3); } } @@ -230,8 +212,8 @@ recolor (b_state *state) /* 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; @@ -239,17 +221,21 @@ init_balls (Display *dpy, Window window) 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 @@ -272,19 +258,21 @@ init_balls (Display *dpy, Window window) /* 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); @@ -302,43 +290,63 @@ init_balls (Display *dpy, Window window) 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->time_tick = 999999; - state->fps_p = get_boolean_resource ("doFPS", "DoFPS"); +# ifdef USE_IPHONE /* Always obey real-world gravity */ + state->shake_p = False; +# endif + + + state->fps_p = get_boolean_resource (dpy, "doFPS", "DoFPS"); if (state->fps_p) { XFontStruct *font; - char *fontname = get_string_resource ("font", "Font"); - const char *def_font = "fixed"; - if (!fontname || !*fontname) fontname = (char *)def_font; + char *fontname = get_string_resource (dpy, "fpsFont", "Font"); + if (!fontname) fontname = "-*-courier-bold-r-normal-*-180-*"; font = XLoadQueryFont (dpy, fontname); - if (!font) font = XLoadQueryFont (dpy, def_font); + if (!font) font = XLoadQueryFont (dpy, "fixed"); 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; @@ -420,13 +428,11 @@ shake (b_state *state) 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); @@ -434,32 +440,45 @@ check_wall_clock (b_state *state, float max_d) 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); + +# ifdef USE_IPHONE /* Always obey real-world gravity */ + { + float a = fabs (fabs(state->accx) > fabs(state->accy) + ? state->accx : state->accy); + switch ((int) current_device_rotation ()) { + case 0: case 360: state->accx = 0; state->accy = a; break; + case -90: state->accx = -a; state->accy = 0; break; + case 90: state->accx = a; state->accy = 0; break; + case 180: case -180: state->accx = 0; state->accy = -a; break; + default: break; + } + } +# endif /* USE_IPHONE */ 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; - sprintf (state->fps_str, - " FPS: %.2f Collisions: %.3f/frame Max motion: %.3f", - fps, cps/fps, max_d); + sprintf (state->fps_str, "Collisions: %.3f/frame Max motion: %.3f", + cps/fps, max_d); draw_fps_string(state); } state->frame_count = 0; state->collision_count = 0; - last = now; + state->last_time = now; } } @@ -473,6 +492,10 @@ repaint_balls (b_state *state) 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; @@ -486,11 +509,10 @@ repaint_balls (b_state *state) 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 */ { @@ -500,6 +522,8 @@ repaint_balls (b_state *state) 0, 360*64); } } +#endif /* !HAVE_COCOA */ + if (state->mouse_ball == a) gc = state->draw_gc2; else @@ -523,7 +547,11 @@ repaint_balls (b_state *state) 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 @@ -689,59 +717,86 @@ update_balls (b_state *state) /* 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, 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. */ { - 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++) + state->mouse_ball = 0; + return True; + } + else + { + /* When trying to pick up a ball, first look for a click directly + inside the ball; but if we don't find it, expand the radius + outward until we find something nearby. + */ + float max = state->max_radius * 4; + float step = max / 10; + float r2; + for (r2 = step; r2 < max; r2 += step) { + 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 d = ((state->px[i] - rx) * (state->px[i] - rx) + + (state->py[i] - ry) * (state->py[i] - ry)); float r = state->r[i]; + if (r2 > r) r = r2; if (d < r*r) { state->mouse_ball = i; - return; + return True; } } + } } - else if (event.xany.type == ButtonRelease) /* 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); - } - - screenhack_handle_event (state->dpy, &event); + 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; +} + +static void +fluidballs_reshape (Display *dpy, Window window, void *closure, + unsigned int w, unsigned int h) +{ } - -char *progclass = "FluidBalls"; +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", - ".textColor: yellow", - ".font: -*-helvetica-*-r-*-*-*-180-*-*-p-*-*-*", + ".foreground: yellow", + ".textColor: white", + "*mouseForeground: white", "*delay: 10000", "*count: 300", "*size: 25", @@ -750,7 +805,6 @@ char *defaults [] = { "*wind: 0.00", "*elasticity: 0.97", "*timeScale: 1.0", - "*doFPS: False", "*shake: True", "*shakeThreshold: 0.015", "*doubleBuffer: True", @@ -758,10 +812,13 @@ char *defaults [] = { "*useDBE: True", "*useDBEClear: True", #endif /* HAVE_DOUBLE_BUFFER_EXTENSION */ +#ifdef USE_IPHONE + "*ignoreRotation: True", +#endif 0 }; -XrmOptionDescRec options [] = { +static XrmOptionDescRec fluidballs_options [] = { { "-delay", ".delay", XrmoptionSepArg, 0 }, { "-count", ".count", XrmoptionSepArg, 0 }, { "-size", ".size", XrmoptionSepArg, 0 }, @@ -769,30 +826,15 @@ XrmOptionDescRec options [] = { { "-gravity", ".gravity", XrmoptionSepArg, 0 }, { "-wind", ".wind", XrmoptionSepArg, 0 }, { "-elasticity", ".elasticity", XrmoptionSepArg, 0 }, - { "-fps", ".doFPS", XrmoptionNoArg, "True" }, - { "-no-fps", ".doFPS", XrmoptionNoArg, "False" }, { "-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)