1 files changed, 31 insertions, 14 deletions

diff --git a/src/comet.c b/src/comet.c
index 4341a14..b8cce7d 100644
--- a/src/comet.c
+++ b/src/comet.c
@@ -71,11 +71,15 @@ static gboolean cpu_update(Button *btn)
     char *perc = cpu_percentage();
 
     // Don't update on error
-    if (perc != NULL) {
-        ButtonSimple *sbtn = CAST(btn, ButtonSimple);
-        button_simple_set_text(btn, perc, sbtn->text_color);
+    if (perc == NULL)
+        return G_SOURCE_CONTINUE;
+
+    ButtonSimple *sbtn = CAST(btn, ButtonSimple);
+    bool update = g_strcmp0(perc, sbtn->text) != 0;
+    button_simple_set_text(btn, perc, sbtn->text_color);
+
+    if (update)
         state_request_redraw(sbtn->data, false);
-    }
 
     return G_SOURCE_CONTINUE;
 }
@@ -97,26 +101,35 @@ static gboolean ram_update(Button *btn)
     int usage = 100 * (total - unused - buffers - cached) / total;
     fclose(meminfo);
 
+
     ButtonSimple *sbtn = CAST(btn, ButtonSimple);
-    button_simple_set_text(btn, g_strdup_printf("  %d%%", usage), sbtn->text_color);
+    char *ram = g_strdup_printf("  %d%%", usage);
+    bool update = g_strcmp0(ram, sbtn->text) != 0;
+    button_simple_set_text(btn, ram, sbtn->text_color);
+
+    if (update)
+        state_request_redraw(sbtn->data, false);
 
-    state_request_redraw(sbtn->data, false);
     return G_SOURCE_CONTINUE;
 }
 
 static gboolean temp_update(Button *btn)
 {
-    FILE *temp = fopen("/sys/class/thermal/thermal_zone2/temp", "rb");
-    g_assert_nonnull(temp);
+    FILE *thermal = fopen("/sys/class/thermal/thermal_zone2/temp", "rb");
+    g_assert_nonnull(thermal);
 
     uintmax_t value;
-    g_assert(1 == fscanf(temp, "%ju\n", &value));
-    fclose(temp);
+    g_assert(1 == fscanf(thermal, "%ju\n", &value));
+    fclose(thermal);
 
     ButtonSimple *sbtn = CAST(btn, ButtonSimple);
-    button_simple_set_text(btn, g_strdup_printf(" %d °C", (int)(value / 1000)), sbtn->text_color);
+    char *temp = g_strdup_printf(" %d °C", (int)(value / 1000));
+    bool update = g_strcmp0(temp, sbtn->text) != 0;
+    button_simple_set_text(btn, temp, sbtn->text_color);
+
+    if (update)
+        state_request_redraw(sbtn->data, false);
 
-    state_request_redraw(sbtn->data, false);
     return G_SOURCE_CONTINUE;
 }
 
@@ -127,9 +140,13 @@ static gboolean disk_update(Button *btn)
     const double used = 1.0 - ((double)buffer.f_bavail / (double)buffer.f_blocks);
 
     ButtonSimple *sbtn = CAST(btn, ButtonSimple);
-    button_simple_set_text(btn, g_strdup_printf("  %d%%", (int)round(used * 100.0)), sbtn->text_color);
+    char *disk = g_strdup_printf("  %d%%", (int)round(used * 100.0));
+    bool update = g_strcmp0(disk, sbtn->text) != 0;
+    button_simple_set_text(btn, disk, sbtn->text_color);
+
+    if (update)
+        state_request_redraw(sbtn->data, false);
 
-    state_request_redraw(sbtn->data, false);
     return G_SOURCE_CONTINUE;
 }