From 1a6892ff1d8e842ab0e59a28707f7f182129961e Mon Sep 17 00:00:00 2001
From: B Stack <bgstack15@gmail.com>
Date: Wed, 5 Feb 2020 22:17:44 -0500
Subject: add mouse scroll events on R and r

---
 Makefile     |  2 +-
 mktrayicon.c | 42 ++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index d5b434c..099d986 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 mktrayicon: mktrayicon.c
-	${CC} `pkg-config --cflags gtk+-3.0` -o $@ $< `pkg-config --libs gtk+-3.0` `pkg-config --cflags --libs x11`
+	${CC} `echo $${DEBUG+-DDEBUG}` `pkg-config --cflags gtk+-3.0` -o $@ $< `pkg-config --libs gtk+-3.0` `pkg-config --cflags --libs x11`
 
 clean:
 	rm mktrayicon
diff --git a/mktrayicon.c b/mktrayicon.c
index a0fed9a..8584783 100644
--- a/mktrayicon.c
+++ b/mktrayicon.c
@@ -52,6 +52,8 @@ struct item {
   char *name;
   char *action;
 } * onmenu;
+char *onscrollup = NULL;
+char *onscrolldown = NULL;
 int menusize = 0; // number of menu entries
 GtkWidget *menu = NULL;
 
@@ -87,6 +89,30 @@ void tray_icon_on_menu(GtkStatusIcon *status_icon, guint button,
   }
 }
 
+void tray_icon_on_scroll(GtkStatusIcon *status_icon, GdkEventScroll *event,
+                       gpointer user_data) {
+  char *i = NULL;
+  switch (event->direction) {
+    case GDK_SCROLL_UP:
+      i = "up";
+      if (onscrollup != NULL && fork() == 0)
+        execl("/bin/sh", "sh", "-c", onscrollup, (char *)NULL);
+      break;
+    case GDK_SCROLL_DOWN:
+      i = "down";
+      if (onscrolldown != NULL && fork() == 0)
+        execl("/bin/sh", "sh", "-c", onscrolldown, (char *)NULL);
+      break;
+  }
+
+  if (i != NULL) {
+  #ifdef DEBUG
+    printf("scroll %s\n",i);
+  #endif
+
+  }
+}
+
 gboolean set_tooltip(gpointer data) {
   char *p = (char *)data;
   if (*p == '\0') {
@@ -403,6 +429,20 @@ outer:
         gtk_widget_show_all(menu);
         free(param);
         break;
+      case 'R': /* mouse scroll up */
+        if (onscrollup != NULL) {
+          free(onscrollup);
+        }
+        onscrollup = malloc(strlen(param));
+        strncpy(onscrollup, param, len + 1);
+        break;
+      case 'r': /* mouse scroll down */
+        if (onscrolldown != NULL) {
+          free(onscrolldown);
+        }
+        onscrolldown = malloc(strlen(param));
+        strncpy(onscrolldown, param, len + 1);
+        break;
       default:
         fprintf(stderr, "Unknown command: '%c'\n", *buf);
         if (param != NULL) {
@@ -428,6 +468,8 @@ static GtkStatusIcon *create_tray_icon(char *start_icon) {
                    G_CALLBACK(tray_icon_on_click), NULL);
   g_signal_connect(G_OBJECT(tray_icon), "popup-menu",
                    G_CALLBACK(tray_icon_on_menu), NULL);
+  g_signal_connect(G_OBJECT(tray_icon), "scroll-event",
+                   G_CALLBACK(tray_icon_on_scroll), NULL);
   gtk_status_icon_set_visible(tray_icon, TRUE);
 
   return tray_icon;
-- 
cgit