Add configuration option for icon scaling

The maximum size for icons can now be set with the max_icon_size option.
Setting its value to 0 will disable the scaling of icons.

config.def.h

@@ -56,6 +56,8 @@ char *dmenu = "/usr/bin/dmenu";
 
 char *browser = "/usr/bin/firefox";
 
+int max_icon_size = 32;
+
 /* paths to default icons */
 char *icon_folders = "/usr/share/icons/gnome/16x16/status/:/usr/share/icons/gnome/16x16/devices/";
 

settings.c

@@ -249,6 +249,10 @@ void load_settings(char *cmdline_config_path)
                 }
         }
 
+        settings.max_icon_size =
+            option_get_int("global", "max_icon_size", "-max_icon_size", max_icon_size,
+                           "Scale larger icons down to this size, set to 0 to disable");
+
         settings.icon_folders =
             option_get_string("global", "icon_folders", "-icon_folders", icon_folders,
                               "paths to default icons");

settings.h

@@ -49,6 +49,7 @@ typedef struct _settings {
         char **dmenu_cmd;
         char *browser;
         enum icon_position_t icon_position;
+        int max_icon_size;
         char *icon_folders;
         enum follow_mode f_mode;
         bool always_run_script;

x.c

@@ -404,15 +404,16 @@ static colored_layout *r_init_shared(cairo_t *c, notification *n)
                 int w = gdk_pixbuf_get_width(pixbuf);
                 int h = gdk_pixbuf_get_height(pixbuf);
                 int larger = w > h ? w : h;
-                int max_size = 24;
+                if (settings.max_icon_size && larger > settings.max_icon_size) {
-                if (larger > max_size) {
                         if (w >= h) {
                                 pixbuf = gdk_pixbuf_scale_simple(pixbuf,
-                                                max_size, (int) ((double) max_size / w * h),
+                                                settings.max_icon_size,
+                                                (int) ((double) settings.max_icon_size / w * h),
                                                 GDK_INTERP_BILINEAR);
                         } else {
                                 pixbuf = gdk_pixbuf_scale_simple(pixbuf,
-                                                (int) ((double) max_size / h * w), max_size,
+                                                (int) ((double) settings.max_icon_size / h * w),
+                                                settings.max_icon_size,
                                                 GDK_INTERP_BILINEAR);
                         }
                 }