From b3ece5a5554a242522799864ef4714513d4bcf97 Mon Sep 17 00:00:00 2001
From: David Phillips <david@sighup.nz>
Date: Sun, 3 Mar 2019 16:40:09 +1300
Subject: Re-add debug macro, short circuit icon logic

---
 bat_tray.c | 23 +++++++++++++++--------
 common.c   |  2 +-
 common.h   | 14 +++++++++++++-
 tray.c     | 16 +++++++++++++---
 4 files changed, 42 insertions(+), 13 deletions(-)

diff --git a/bat_tray.c b/bat_tray.c
index e4f7c39..493900a 100644
--- a/bat_tray.c
+++ b/bat_tray.c
@@ -9,7 +9,8 @@
 
 static GtkStatusIcon* tray;
 static char tooltip_text[1024];
-static int old_rounded;
+static int old_rounded = -1;
+static int old_battery_state = -1;
 static int bat_num; // Shortcoming: we only detect one battery
 static char CHARGE_VALUE_PATH[1024];
 static char CHARGE_STATE_PATH[1024];
@@ -161,26 +162,35 @@ static gboolean update()
 {
 	char icon_file[1024];
 	int rounded = 0;
+	int battery_state = 0;
 
 	update_tooltip_cache();
 
-	/* if rounded hasn't changed, don't spend time changing icon */
+	/* if charge and status hasn't changed, don't spend time changing icon */
+	battery_state = get_battery_state();
 	rounded = get_bat_percent_rounded();
-	if (rounded == old_rounded) {
+	if (rounded == old_rounded && battery_state == old_battery_state) {
+		debug("Short-circuiting\n");
 		return true;
 	}
 
-	switch (get_battery_state())
+	old_rounded = rounded;
+	old_battery_state = battery_state;
+
+	switch (battery_state)
 	{
 		case STATE_DISCHARGING:
+			debug("discharging\n");
 			snprintf(icon_file, sizeof(icon_file), "%s/bat-%d.png", DEFAULT_THEME, rounded);
 			break;
 
 		case STATE_CHARGING:
+			debug("charging\n");
 			snprintf(icon_file, sizeof(icon_file), "%s/bat-%d-charging.png", DEFAULT_THEME, rounded);
 			break;
 
 		default:
+			debug("unknown/charged\n");
 			snprintf(icon_file, sizeof(icon_file), "%s/bat-charged.png", DEFAULT_THEME);
 			break;
 	}
@@ -209,10 +219,7 @@ void bat_tray_init()
 	gtk_status_icon_set_from_file(tray, icon_file);
 	gtk_status_icon_set_has_tooltip (tray, TRUE);
 	g_signal_connect(G_OBJECT(tray), "query-tooltip", G_CALLBACK(show_tooltip), NULL);
-	g_timeout_add(10000, update, NULL);
-
-	/* trigger icon refresh in update() below */
-	old_rounded = get_bat_percent_rounded() - 1;
+	g_timeout_add(BAT_TRAY_UPDATE_INTERVAL, update, NULL);
 
 	/* pre-load cached tooltip text */
 	update();
diff --git a/common.c b/common.c
index bb8681a..0e76a85 100644
--- a/common.c
+++ b/common.c
@@ -26,7 +26,7 @@ int vget_int_value_from_filef(const char* format, va_list args)
 {
 	char filename[1024];
 	if (vsnprintf(filename, sizeof(filename), format, args) == sizeof(filename))
-		fprintf(stderr, "WARN: filename buffer too small");
+		info("Error: filename buffer too small");
 	return get_int_value_from_file(filename);
 }
 
diff --git a/common.h b/common.h
index ff8c8a8..6b2e92d 100644
--- a/common.h
+++ b/common.h
@@ -12,5 +12,17 @@ int  get_int(const char* string);
 #define STR_LINE STRING(__LINE__)
 /* </ew> */
 
-#define info(...)	printf("INFO: "__FILE__":"STR_LINE" --- "__VA_ARGS__)
+#define info(format, ...)	printf("INFO : "__FILE__"@%s():"STR_LINE": "format, __func__ __VA_OPT__(,) __VA_ARGS__)
+
+#ifdef DEBUG
+#define debug(format, ...)	fprintf(stderr, "DEBUG: "__FILE__"@%s():"STR_LINE": "format, __func__ __VA_OPT__(,) __VA_ARGS__)
+#else
+#define debug(...)
+#endif
+
+#define debug_entry()	debug("entry\n")
+#define debug_exit()	debug("exit\n")
+
 #define FILE_PATH_SIZE 2048
+#define CPU_TRAY_UPDATE_INTERVAL 2000
+#define BAT_TRAY_UPDATE_INTERVAL 10000
diff --git a/tray.c b/tray.c
index 3a5ea32..8f1ce17 100644
--- a/tray.c
+++ b/tray.c
@@ -1,4 +1,5 @@
 #include "tray.h"
+#include "common.h"
 #include "getcore.h"
 #include "getfreq.h"
 #include "getgov.h"
@@ -17,6 +18,7 @@ static char tooltip_text[1024];
 static GtkWidget* menu;
 static GSList* menu_items;
 static GtkWidget* checked_menu_item;
+static old_adjusted_percent = -1;
 
 
 /***********************************************************************
@@ -213,7 +215,15 @@ static void update_icon()
 		}
 	}
 
+	if (adjusted_percent == old_adjusted_percent) {
+		debug("Unchanged, short circuiting\n");
+		return;
+	}
+
+	old_adjusted_percent = adjusted_percent;
+
 	snprintf(file, sizeof(file), "%s/cpu-%d.png", DEFAULT_THEME,adjusted_percent);
+	debug("Set icon to %s\n", file);
 	gtk_status_icon_set_from_file(tray, file);
 }
 
@@ -240,7 +250,7 @@ static gboolean update()
 	switch ( now_bat_state )
 	{
 		case STATE_DISCHARGING:
-			fprintf(stderr, "discharging\n");
+			debug("discharging\n");
 			if (DEFAULT_BAT_GOV)
 			{
 				for (i = 0; i < gc_number(); i++)
@@ -250,7 +260,7 @@ static gboolean update()
 
 		case STATE_CHARGING:
 		case STATE_FULL:
-			fprintf(stderr, "ac power\n");
+			debug("ac power\n");
 			if (DEFAULT_AC_GOV)
 			{
 				for (i = 0; i < gc_number(); i++)
@@ -306,7 +316,7 @@ void tray_init()
 	g_signal_connect(G_OBJECT(tray), "query-tooltip", G_CALLBACK(show_tooltip), NULL);
 	g_signal_connect(G_OBJECT(tray), "popup-menu", G_CALLBACK(popup_menu), NULL);
 
-	g_timeout_add(1000, update, NULL);
+	g_timeout_add(CPU_TRAY_UPDATE_INTERVAL, update, NULL);
 
 	/* Force meaningful tooltip cached text and force meaningful icon */
 	update();
-- 
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