From http://www.jwz.org/xscreensaver/xscreensaver-5.37.tar.gz

[xscreensaver] / hacks / fadeplot.c

diff --git a/hacks/fadeplot.c b/hacks/fadeplot.c
index a44bdb3b60d2fa320b334e30b07fccc514add44a..093941efd55faf61b10309eb0254757ddbae1287 100644 (file)
--- a/hacks/fadeplot.c
+++ b/hacks/fadeplot.c
@@ -35,10 +35,11 @@ static const char sccsid[] = "@(#)fadeplot.c        5.00 2000/11/01 xlockmore";
                                        "*cycles: 1500 \n" \
                                        "*ncolors: 64 \n" \
                                        "*fpsSolid: true \n" \
+                                       "*ignoreRotation: True \n" \
 
 # define BRIGHT_COLORS
 # define UNIFORM_COLORS
-# define reshape_fadeplot 0
+# define release_fadeplot 0
 # define fadeplot_handle_event 0
 # include "xlockmore.h"                /* in xscreensaver distribution */
 #else /* STANDALONE */
@@ -52,7 +53,7 @@ ENTRYPOINT ModeSpecOpt fadeplot_opts =
 
 #ifdef USE_MODULES
 ModStruct   fadeplot_description =
-{"fadeplot", "init_fadeplot", "draw_fadeplot", "release_fadeplot",
+{"fadeplot", "init_fadeplot", "draw_fadeplot", (char *) NULL,
  "refresh_fadeplot", "init_fadeplot", (char *) NULL, &fadeplot_opts,
  30000, 10, 1500, 1, 64, 0.6, "",
  "Shows a fading plot of sine squared", 0, NULL};
@@ -75,8 +76,9 @@ typedef struct {
 static fadeplotstruct *fadeplots = (fadeplotstruct *) NULL;
 
 static void
-free_fadeplot(fadeplotstruct *fp)
+free_fadeplot(ModeInfo * mi)
 {
+       fadeplotstruct *fp = &fadeplots[MI_SCREEN(mi)];
        if (fp->pts != NULL) {
                (void) free((void *) fp->pts);
                fp->pts = (XPoint *) NULL;
@@ -96,7 +98,7 @@ initSintab(ModeInfo * mi)
 
        fp->angles = NRAND(950) + 250;
        if ((fp->stab = (int *) malloc(fp->angles * sizeof (int))) == NULL) {
-               free_fadeplot(fp);
+               free_fadeplot(mi);
                return False;
        }
        for (i = 0; i < fp->angles; i++) {
@@ -111,11 +113,7 @@ init_fadeplot (ModeInfo * mi)
 {
        fadeplotstruct *fp;
 
-       if (fadeplots == NULL) {
-               if ((fadeplots = (fadeplotstruct *) calloc(MI_NUM_SCREENS(mi),
-                                          sizeof (fadeplotstruct))) == NULL)
-                       return;
-       }
+       MI_INIT (mi, fadeplots, free_fadeplot);
        fp = &fadeplots[MI_SCREEN(mi)];
 
        fp->width = MI_WIDTH(mi);
@@ -143,7 +141,7 @@ init_fadeplot (ModeInfo * mi)
        if (fp->pts == NULL) {
                if ((fp->pts = (XPoint *) calloc(fp->maxpts, sizeof (XPoint))) ==
                                 NULL) {
-                       free_fadeplot(fp);
+                       free_fadeplot(mi);
                        return;
                }
        }
@@ -202,33 +200,30 @@ draw_fadeplot (ModeInfo * mi)
        if ((fp->temps % (fp->angles / 2)) == 0) {
                fp->temps = fp->temps % fp->angles * 5;
                if ((fp->temps % (fp->angles)) == 0)
-                       fp->speed.y = (fp->speed.y++) % 30 + 1;
+                       fp->speed.y = (fp->speed.y + 1) % 30 + 1;
                if ((fp->temps % (fp->angles * 2)) == 0)
                        fp->speed.x = (fp->speed.x) % 20;
                if ((fp->temps % (fp->angles * 3)) == 0)
-                       fp->step.y = (fp->step.y++) % 2 + 1;
+                       fp->step.y = (fp->step.y + 1) % 2 + 1;
 
                MI_CLEARWINDOW(mi);
        }
 }
 
 ENTRYPOINT void
-refresh_fadeplot (ModeInfo * mi)
+reshape_fadeplot(ModeInfo * mi, int width, int height)
 {
-       MI_CLEARWINDOW(mi);
+       fadeplotstruct *fp = &fadeplots[MI_SCREEN(mi)];
+    fp->width  = width;
+    fp->height = height;
+       fp->min = MAX(MIN(fp->width, fp->height) / 2, 1);
+       fp->factor.x = MAX(fp->width / (2 * fp->min), 1);
+       fp->factor.y = MAX(fp->height / (2 * fp->min), 1);
 }
 
 ENTRYPOINT void
-release_fadeplot (ModeInfo * mi)
+refresh_fadeplot (ModeInfo * mi)
 {
-       if (fadeplots != NULL) {
-               int         screen;
-
-               for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++)
-                       free_fadeplot(&fadeplots[screen]);
-               (void) free((void *) fadeplots);
-               fadeplots = (fadeplotstruct *) NULL;
-       }
 }
 
 XSCREENSAVER_MODULE ("FadePlot", fadeplot)