[PATCH 10/19] perf hist browser: Move coloring logic to hpp functions

[Namhyung Kim <namhyung@kernel.org>]

From: Namhyung Kim <namhyung.kim@lge.com>

Move coloring logic into the hpp functions so that each value can
be colored independently.  It'd required for event group view.

For overhead column, add a callback for printing 'folded_sign' of
callchains of a hist entry.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
 tools/perf/ui/browsers/hists.c | 72 ++++++++++++++++++++++++------------------
 1 file changed, 42 insertions(+), 30 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 46242deee8d2..852e4e10c7c4 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -567,23 +567,48 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
 	return row - first_row;
 }
 
+struct hpp_arg {
+	struct ui_browser *b;
+	char folded_sign;
+	bool current_entry;
+};
+
+static int __hpp__color_callchain(struct hpp_arg *arg)
+{
+	if (!symbol_conf.use_callchain)
+		return 0;
+
+	slsmg_printf("%c ", arg->folded_sign);
+	return 2;
+}
+
 static int __hpp__color_fmt(struct perf_hpp *hpp, struct hist_entry *he,
-			    u64 (*get_field)(struct hist_entry *))
+			    u64 (*get_field)(struct hist_entry *),
+			    int (*callchain_cb)(struct hpp_arg *))
 {
-	int ret;
+	int ret = 0;
 	double percent = 0.0;
 	struct hists *hists = he->hists;
+	struct hpp_arg *arg = hpp->ptr;
 
 	if (hists->stats.total_period)
 		percent = 100.0 * get_field(he) / hists->stats.total_period;
 
-	*(double *)hpp->ptr = percent;
+	ui_browser__set_percent_color(arg->b, percent, arg->current_entry);
+
+	if (callchain_cb)
+		ret += callchain_cb(arg);
+
+	ret += scnprintf(hpp->buf, hpp->size, "%6.2f%%", percent);
+	slsmg_printf("%s", hpp->buf);
+
+	if (!arg->current_entry || !arg->b->navkeypressed)
+		ui_browser__set_color(arg->b, HE_COLORSET_NORMAL);
 
-	ret = scnprintf(hpp->buf, hpp->size, "%6.2f%%", percent);
 	return ret;
 }
 
-#define __HPP_COLOR_PERCENT_FN(_type, _field)				\
+#define __HPP_COLOR_PERCENT_FN(_type, _field, _cb)			\
 static u64 __hpp_get_##_field(struct hist_entry *he)			\
 {									\
 	return he->stat._field;						\
@@ -592,14 +617,14 @@ static u64 __hpp_get_##_field(struct hist_entry *he)			\
 static int hist_browser__hpp_color_##_type(struct perf_hpp *hpp,	\
 					   struct hist_entry *he)	\
 {									\
-	return __hpp__color_fmt(hpp, he, __hpp_get_##_field);		\
+	return __hpp__color_fmt(hpp, he, __hpp_get_##_field, _cb);	\
 }
 
-__HPP_COLOR_PERCENT_FN(overhead, period)
-__HPP_COLOR_PERCENT_FN(overhead_sys, period_sys)
-__HPP_COLOR_PERCENT_FN(overhead_us, period_us)
-__HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys)
-__HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us)
+__HPP_COLOR_PERCENT_FN(overhead, period, __hpp__color_callchain)
+__HPP_COLOR_PERCENT_FN(overhead_sys, period_sys, NULL)
+__HPP_COLOR_PERCENT_FN(overhead_us, period_us, NULL)
+__HPP_COLOR_PERCENT_FN(overhead_guest_sys, period_guest_sys, NULL)
+__HPP_COLOR_PERCENT_FN(overhead_guest_us, period_guest_us, NULL)
 
 #undef __HPP_COLOR_PERCENT_FN
 
@@ -626,7 +651,6 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 				    unsigned short row)
 {
 	char s[256];
-	double percent;
 	int printed = 0;
 	int width = browser->b.width;
 	char folded_sign = ' ';
@@ -646,16 +670,20 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 	}
 
 	if (row_offset == 0) {
+		struct hpp_arg arg = {
+			.b 		= &browser->b,
+			.folded_sign	= folded_sign,
+			.current_entry	= current_entry,
+		};
 		struct perf_hpp hpp = {
 			.buf		= s,
 			.size		= sizeof(s),
+			.ptr		= &arg,
 		};
-		int i = 0;
 
 		ui_browser__gotorc(&browser->b, row, 0);
 
 		perf_hpp__for_each_format(fmt) {
-
 			if (!first) {
 				slsmg_printf("  ");
 				width -= 2;
@@ -663,27 +691,11 @@ static int hist_browser__show_entry(struct hist_browser *browser,
 			first = false;
 
 			if (fmt->color) {
-				hpp.ptr = &percent;
-				/* It will set percent for us. See __hpp__color_fmt above. */
 				width -= fmt->color(&hpp, entry);
-
-				ui_browser__set_percent_color(&browser->b, percent, current_entry);
-
-				if (!i && symbol_conf.use_callchain) {
-					slsmg_printf("%c ", folded_sign);
-					width -= 2;
-				}
-
-				slsmg_printf("%s", s);
-
-				if (!current_entry || !browser->b.navkeypressed)
-					ui_browser__set_color(&browser->b, HE_COLORSET_NORMAL);
 			} else {
 				width -= fmt->entry(&hpp, entry);
 				slsmg_printf("%s", s);
 			}
-
-			i++;
 		}
 
 		/* The scroll bar isn't being used */
-- 
1.7.11.7