perf ui browser: Add method to draw up/down arrow line
It figures out the direction and draws downwards arrows too if that is
the case.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-tg329nr7q4dg9d0tl3o0wywg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 32ac116..f4b2530 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -600,8 +600,9 @@
SLsmg_set_char_set(0);
}
-void __ui_browser__line_arrow_up(struct ui_browser *browser, unsigned int column,
- u64 start, u64 end, int start_width)
+static void __ui_browser__line_arrow_up(struct ui_browser *browser,
+ unsigned int column,
+ u64 start, u64 end, int start_width)
{
unsigned int row, end_row;
@@ -639,6 +640,55 @@
SLsmg_set_char_set(0);
}
+static void __ui_browser__line_arrow_down(struct ui_browser *browser,
+ unsigned int column,
+ u64 start, u64 end, int start_width)
+{
+ unsigned int row, end_row;
+
+ SLsmg_set_char_set(1);
+
+ if (start >= browser->top_idx) {
+ row = start - browser->top_idx;
+ ui_browser__gotorc(browser, row, column);
+ SLsmg_write_char(SLSMG_ULCORN_CHAR);
+ ui_browser__gotorc(browser, row, column + 1);
+ SLsmg_draw_hline(start_width);
+
+ if (row++ == 0)
+ goto out;
+ } else
+ row = 0;
+
+ if (end >= browser->top_idx + browser->height)
+ end_row = browser->height - 1;
+ else
+ end_row = end - browser->top_idx;;
+
+ ui_browser__gotorc(browser, row, column);
+ SLsmg_draw_vline(end_row - row + 1);
+
+ ui_browser__gotorc(browser, end_row, column);
+ if (end < browser->top_idx + browser->height) {
+ SLsmg_write_char(SLSMG_LLCORN_CHAR);
+ ui_browser__gotorc(browser, end_row, column + 1);
+ SLsmg_write_char(SLSMG_HLINE_CHAR);
+ ui_browser__gotorc(browser, end_row, column + 2);
+ SLsmg_write_char(SLSMG_RARROW_CHAR);
+ }
+out:
+ SLsmg_set_char_set(0);
+}
+
+void __ui_browser__line_arrow(struct ui_browser *browser, unsigned int column,
+ u64 start, u64 end, int start_width)
+{
+ if (start > end)
+ __ui_browser__line_arrow_up(browser, column, start, end, start_width);
+ else
+ __ui_browser__line_arrow_down(browser, column, start, end, start_width);
+}
+
void ui_browser__init(void)
{
int i = 0;