added background blur option

README.md

@@ -13,6 +13,7 @@ Features:
 * Create custom events and trigger them externaly
 * "click" events for the widgets, where a script can be specified to run on a mouse click
 * Cache the scripts in RAM to reduce I/O operations
+* Offset the bar from its original location, rounded corners and background blur
 * Performance friendly
 
 
@@ -124,6 +125,7 @@ where the settings currently are:
 * *margin*: the screen padding around the bar itself
 * *y_offset*: the y-offset in pixels from the default position
 * *corner_radius*: the corner radius of the bar itself
+* *blur_radius*: the blur radius to be applied to the background of the bar itself
 * *padding_left*: padding on the left before first item 
 * *padding_right*: just as padding_right
 * *bar_color*: the color of the bar itself

src/bar.c

@@ -290,6 +290,7 @@ struct bar *bar_create(uint32_t did) {
   SLSSetWindowTags(g_connection, bar->id, set_tags, 64);
   SLSClearWindowTags(g_connection, bar->id, clear_tags, 64);
   SLSSetWindowOpacity(g_connection, bar->id, 0);
+  SLSSetWindowBackgroundBlurRadius(g_connection, bar->id, g_bar_manager.blur_radius);
   SLSSetMouseEventEnableFlags(g_connection, bar->id, false);
   SLSSetWindowLevel(g_connection, bar->id, CGWindowLevelForKey(4));
   bar->context = SLWindowContextCreate(g_connection, bar->id, 0);

src/bar.h

@@ -10,6 +10,7 @@ extern CGError SLSClearWindowTags(int cid, uint32_t wid, uint32_t tags[2], int t
 extern CGError SLSSetWindowShape(int cid, uint32_t wid, float x_offset, float y_offset, CFTypeRef shape);
 extern CGError SLSSetWindowResolution(int cid, uint32_t wid, double res);
 extern CGError SLSSetWindowOpacity(int cid, uint32_t wid, bool isOpaque);
+extern CGError SLSSetWindowBackgroundBlurRadius(int cid, uint32_t wid, uint32_t radius);
 extern CGError SLSSetMouseEventEnableFlags(int cid, uint32_t wid, bool shouldEnable);
 extern CGError SLSOrderWindow(int cid, uint32_t wid, int mode, uint32_t relativeToWID);
 extern CGError SLSSetWindowLevel(int cid, uint32_t wid, int level);

src/bar_manager.c

@@ -28,6 +28,13 @@ int bar_manager_get_item_index_by_address(struct bar_manager* bar_manager, struc
   return -1;
 }
 
+void bar_manager_set_background_blur(struct bar_manager* bar_manager, uint32_t radius) {
+  bar_manager->blur_radius = radius;
+  for (int i = 0; i < bar_manager->bar_count; i++) {
+    SLSSetWindowBackgroundBlurRadius(g_connection, bar_manager->bars[i]->id, radius);
+  }
+}
+
 void bar_manager_set_background_color(struct bar_manager *bar_manager, uint32_t color) {
   bar_manager->background_color = rgba_color_from_hex(color);
   bar_manager_refresh(bar_manager);
@@ -106,6 +113,7 @@ void bar_manager_init(struct bar_manager *bar_manager) {
   bar_manager->height = 25;
   bar_manager->y_offset = 0;
   bar_manager->corner_radius = 0;
+  bar_manager->blur_radius = 0;
   bar_manager->margin = 0;
   bar_manager->padding_left = 20;
   bar_manager->padding_right = 20;

src/bar_manager.h

@@ -21,6 +21,7 @@ struct bar_manager {
   uint32_t height;
   uint32_t margin;
   uint32_t corner_radius;
+  uint32_t blur_radius;
   uint32_t y_offset;
   uint32_t padding_left;
   uint32_t padding_right;
@@ -38,6 +39,7 @@ void bar_manager_handle_notification(struct bar_manager* bar_manager, char* cont
 
 void bar_manager_script_update(struct bar_manager* bar_manager, bool forced);
 void bar_manager_update_components(struct bar_manager* bar_manager, uint32_t did, uint32_t sid);
+void bar_manager_set_background_blur(struct bar_manager* bar_manager, uint32_t radius);
 void bar_manager_set_background_color(struct bar_manager *bar_manager, uint32_t color);
 void bar_manager_set_position(struct bar_manager *bar_manager, char *pos);
 void bar_manager_set_spaces(struct bar_manager *bar_manager, bool value);

src/message.c

@@ -70,6 +70,7 @@ extern bool g_verbose;
 #define COMMAND_CONFIG_BAR_YOFFSET                          "y_offset"
 #define COMMAND_CONFIG_BAR_MARGIN                           "margin"
 #define COMMAND_CONFIG_BAR_CORNER_RADIUS                    "corner_radius"
+#define COMMAND_CONFIG_BAR_BLUR_RADIUS                      "blur_radius"
 #define COMMAND_CONFIG_BAR_PADDING_LEFT                     "padding_left"
 #define COMMAND_CONFIG_BAR_PADDING_RIGHT                    "padding_right"
 #define COMMAND_CONFIG_BAR_DISPLAY                          "display"
@@ -442,6 +443,9 @@ static void handle_domain_config(FILE *rsp, struct token domain, char *message)
   } else if (token_equals(command, COMMAND_CONFIG_BAR_CORNER_RADIUS)) {
     struct token token = get_token(&message);
     g_bar_manager.corner_radius = token_to_uint32t(token);
+  } else if (token_equals(command, COMMAND_CONFIG_BAR_BLUR_RADIUS)) {
+    struct token token = get_token(&message);
+    bar_manager_set_background_blur(&g_bar_manager, token_to_uint32t(token));
   } else if (token_equals(command, COMMAND_CONFIG_BAR_PADDING_LEFT)) {
     struct token token = get_token(&message);
     bar_manager_set_padding_left(&g_bar_manager, atoi(token_to_string(token)));