Display output from a command on swaybar

1 files changed, 24 insertions, 2 deletions

diff --git a/swaybar/main.c b/swaybar/main.c
index 7a54f74b..e4a97e69 100644
--- a/swaybar/main.c
+++ b/swaybar/main.c
@@ -1,5 +1,7 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
+#include "readline.h"
 #include "client/registry.h"
 #include "client/window.h"
 #include "client/pango.h"
@@ -25,6 +27,8 @@ struct colors {
         struct box_colors binding_mode;
 };
 
+FILE *command;
+char *line;
 struct registry *registry;
 struct window *window;
 struct colors colors = {
@@ -73,6 +77,16 @@ void cairo_set_source_u32(cairo_t *cairo, uint32_t color) {
                         (color & 0xFF) / 256.0);
 }
 
+void update() {
+        if (!feof(command)) {
+                line = read_line(command);
+                int l = strlen(line) - 1;
+                if (line[l] == '\n') {
+                        line[l] = '\0';
+                }
+        }
+}
+
 void render() {
         cairo_save(window->cairo);
         cairo_set_operator(window->cairo, CAIRO_OPERATOR_CLEAR);
@@ -82,9 +96,12 @@ void render() {
         cairo_set_source_u32(window->cairo, colors.background);
         cairo_paint(window->cairo);
 
-        cairo_move_to(window->cairo, MARGIN, MARGIN);
         cairo_set_source_u32(window->cairo, colors.statusline);
-        pango_printf(window, "TODO: finish bar");
+        int width, height;
+        get_text_size(window, &width, &height, "%s", line);
+
+        cairo_move_to(window->cairo, window->width - MARGIN - width, MARGIN);
+        pango_printf(window, "%s", line);
 }
 
 int main(int argc, char **argv) {
@@ -110,8 +127,13 @@ int main(int argc, char **argv) {
         get_text_size(window, &width, &height, "Test string for measuring purposes");
         window->height = height + MARGIN * 2;
 
+        command = popen(argv[2], "r");
+        line = malloc(1024);
+        line[0] = '\0';
+
         do {
                 if (window_prerender(window) && window->cairo) {
+                        update();
                         render();
                         window_render(window);
                 }