commit c33fbd045759dfb0e8a36fc47ba99b1b3aeced59
author Andrew de los Reyes <adlr@chromium.org> Wed Jul 25 22:50:14 2012
committer Gerrit <chrome-bot@google.com> Thu Jul 26 20:09:23 2012
tree df3cd7cc850f5b27983fa63a616775569e1ee257
parent 5e1db1e57df85fa0012fe4d4e87962e36fe34c5d

mtplot: clickclear option to toggle clearing on click

Sometimes you don't want the screen to clear on click. With this
change, you can tap 'c' or use a command line arg.

BUG=chromium-os:32964
TEST=tested on device w/ both toggle key and short/long command line
args

Change-Id: I75564c2277282408c807e4beafde036515715f19
Reviewed-on: https://gerrit.chromium.org/gerrit/28435
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Commit-Ready: Andrew de los Reyes <adlr@chromium.org>

mtplot.c

diff --git a/mtplot.c b/mtplot.c
index ecb7114..42cc84e 100644
--- a/mtplot.c
+++ b/mtplot.c
@@ -430,6 +430,7 @@
 };
 
 // Program Options
+bool clickclear = true;
 bool monotonic = true;
 bool persist = true;
 
@@ -580,7 +581,7 @@
 
 
 static void ProcessKey(struct mt_state *s, struct input_event *e) {
-  if (e->code == BTN_LEFT)
+  if (e->code == BTN_LEFT && clickclear)
     XClearWindow(dpy, w);
 }
 
@@ -869,6 +870,7 @@
 }
 
 static const struct option long_options[] = {
+  { "clickclear", optional_argument, NULL, 'c' },
   { "display", required_argument, NULL, 'd' },
   { "monotonic", optional_argument, NULL, 'm' },
   { "persist", optional_argument, NULL, 'p' },
@@ -887,6 +889,9 @@
   printf(" -p, --persist[=0|1]    =1: display persistent trails for each contact (default)\n"
          "                        =0: only display the current contact positions\n"
          "                            To toggle at runtime press 'p'\n");
+  printf(" -c, --clickclear[=0|1] =1: clicks clear the screen (default)\n"
+         "                        =0: clicks do not clear the screen\n"
+         "                            To toggle at runtime press 'c'\n");
 
   return EXIT_FAILURE;
 }
@@ -902,10 +907,13 @@
   fd_set rdfs;
 
   while (1) {
-    int c = getopt_long_only(argc, argv, "d:m:p:", long_options, NULL);
+    int c = getopt_long_only(argc, argv, "c:d:m:p:", long_options, NULL);
     if (c == -1)
       break;
     switch (c) {
+      case 'c':
+        clickclear = (optarg) ? atoi(optarg) : true;
+        break;
       case 'd':
         displayname = optarg;
         break;
@@ -1048,6 +1056,8 @@
           KeySym ks = XLookupKeysym(&xke, 0);
           if (ks == XK_Escape)
             XClearWindow(dpy, w);
+          else if (ks == XK_c)
+            clickclear = !clickclear;
           else if (ks == XK_p)
             persist = !persist;
         }