Fix and Enable mouse wheel channel switching by default

src/common/cfgfiles.c

@@ -782,6 +782,7 @@ load_default_config(void)
 	prefs.hex_gui_tab_middleclose = 1;
 	prefs.hex_gui_tab_server = 1;
 	prefs.hex_gui_tab_sort = 1;
+	prefs.hex_gui_tab_scrollchans = 1;
 	prefs.hex_gui_topicbar = 1;
 	prefs.hex_gui_transparency = 255;
 	prefs.hex_gui_tray = 1;

src/fe-gtk/chanview-tabs.c

@@ -306,17 +306,18 @@ tab_scroll_cb (GtkWidget *widget, GdkEventScroll *event, gpointer cv)
 {
 	if (prefs.hex_gui_tab_scrollchans)
 	{
-		if (event->direction == GDK_SCROLL_DOWN)
-			mg_switch_page (1, 1);
-		else if (event->direction == GDK_SCROLL_UP)
-			mg_switch_page (1, -1);
+		int direction = cv_scroll_direction (event);
+
+		if (direction != 0)
+			mg_switch_page (1, direction);
 	}
 	else
 	{
-		/* mouse wheel scrolling */
-		if (event->direction == GDK_SCROLL_UP)
+		int direction = cv_scroll_direction (event);
+
+		if (direction < 0)
 			tab_scroll_left_up_clicked (widget, cv);
-		else if (event->direction == GDK_SCROLL_DOWN)
+		else if (direction > 0)
 			tab_scroll_right_down_clicked (widget, cv);
 	}
 
@@ -356,6 +357,7 @@ cv_tabs_init (chanview *cv)
 	gtk_scrolled_window_set_min_content_height (GTK_SCROLLED_WINDOW (viewport), 1);
 	gtk_widget_set_hexpand (viewport, TRUE);
 	gtk_widget_set_vexpand (viewport, TRUE);
+	cv_add_scroll_events (viewport);
 	g_signal_connect (G_OBJECT (viewport), "scroll-event",
 							G_CALLBACK (tab_scroll_cb), cv);
 	gtk_box_pack_start (GTK_BOX (outer), viewport, 1, 1, 0);
@@ -677,9 +679,11 @@ cv_tabs_add (chanview *cv, chan *ch, char *name, GtkTreeIter *parent)
 	gtk_widget_set_name (but, "zoitechat-tab");
 	gtk_widget_set_size_request (but, -1, 14);
 	gtk_widget_add_events (but, GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK);
+	cv_add_scroll_events (but);
 	hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2);
 	label = gtk_label_new (name);
 	close_button = gtk_button_new ();
+	cv_add_scroll_events (close_button);
 	gtk_style_context_add_class (gtk_widget_get_style_context (close_button), "flat");
 	close_icon = gtk_image_new_from_icon_name ("window-close-symbolic", GTK_ICON_SIZE_MENU);
 	gtk_image_set_pixel_size (GTK_IMAGE (close_icon), 8);
@@ -695,6 +699,10 @@ cv_tabs_add (chanview *cv, chan *ch, char *name, GtkTreeIter *parent)
 	/* used to trap right-clicks */
 	g_signal_connect (G_OBJECT (but), "button-press-event",
 						 	G_CALLBACK (tab_click_cb), ch);
+	g_signal_connect (G_OBJECT (but), "scroll-event",
+							G_CALLBACK (tab_scroll_cb), cv);
+	g_signal_connect (G_OBJECT (close_button), "scroll-event",
+							G_CALLBACK (tab_scroll_cb), cv);
 	g_signal_connect (G_OBJECT (but), "motion-notify-event",
 						 	G_CALLBACK (tab_close_motion_cb), ch);
 	g_signal_connect (G_OBJECT (but), "leave-notify-event",

src/fe-gtk/chanview-tree.c

@@ -111,12 +111,12 @@ cv_tree_scroll_event_cb (GtkWidget *widget, GdkEventScroll *event, gpointer user
 {
 	if (prefs.hex_gui_tab_scrollchans)
 	{
-		if (event->direction == GDK_SCROLL_DOWN)
-			mg_switch_page (1, 1);
-		else if (event->direction == GDK_SCROLL_UP)
-			mg_switch_page (1, -1);
+		int direction = cv_scroll_direction (event);
 
-		return TRUE;
+		if (direction != 0)
+			mg_switch_page (1, direction);
+
+		return direction != 0;
 	}
 
 	return FALSE;
@@ -141,6 +141,7 @@ cv_tree_init (chanview *cv)
 	win = gtk_scrolled_window_new (0, 0);
 	gtk_widget_set_hexpand (win, TRUE);
 	gtk_widget_set_vexpand (win, TRUE);
+	cv_add_scroll_events (win);
 
 	/*gtk_container_set_border_width (GTK_CONTAINER (win), 1);*/
 	gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (win),
@@ -154,6 +155,7 @@ cv_tree_init (chanview *cv)
 	view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (cv->store));
 	gtk_widget_set_hexpand (view, TRUE);
 	gtk_widget_set_vexpand (view, TRUE);
+	cv_add_scroll_events (view);
 	gtk_widget_set_name (view, "zoitechat-tree");
 	{
 		ThemeWidgetStyleValues style_values;

src/fe-gtk/chanview.c

@@ -95,6 +95,37 @@ static chan *cv_find_chan_by_number (chanview *cv, int num);
 static int cv_find_number_of_chan (chanview *cv, chan *find_ch);
 static void cv_find_neighbors_for_removal (chanview *cv, chan *find_ch, chan **left_ch, chan **first_ch);
 
+static void
+cv_add_scroll_events (GtkWidget *widget)
+{
+	gtk_widget_add_events (widget, GDK_SCROLL_MASK | GDK_SMOOTH_SCROLL_MASK);
+}
+
+static int
+cv_scroll_direction (GdkEventScroll *event)
+{
+	gdouble dx;
+	gdouble dy;
+
+	if (event->direction == GDK_SCROLL_SMOOTH && gdk_event_get_scroll_deltas ((GdkEvent *) event, &dx, &dy))
+	{
+		if (dy > 0)
+			return 1;
+		if (dy < 0)
+			return -1;
+	}
+
+	switch (event->direction)
+	{
+	case GDK_SCROLL_DOWN:
+		return 1;
+	case GDK_SCROLL_UP:
+		return -1;
+	default:
+		return 0;
+	}
+}
+
 
 /* ======= TABS ======= */