From: Arnaldo Carvalho de Melo <a...@redhat.com>

This requires some more work so that we can really just use the width of
current entries when we want to partition the screen.

Right now its just a prep patch so that we can have where to update
ui_browser->rows when introducing the column headers line, that will be
togglable, so we need to update it everytime we refresh the dimensions
of the browser.

Cc: Adrian Hunter <adrian.hun...@intel.com>
Cc: David Ahern <dsah...@gmail.com>
Cc: Don Zickus <dzic...@redhat.com>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Mike Galbraith <efa...@gmx.de>
Cc: Namhyung Kim <namhy...@kernel.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Stephane Eranian <eran...@google.com>
Link: http://lkml.kernel.org/n/tip-ovk654rx525b4657y0mh6...@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com>
---
 tools/perf/ui/browsers/hists.c | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index ca63564d203a..ef7abf896f5a 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -56,11 +56,19 @@ static u32 hist_browser__nr_entries(struct hist_browser *hb)
        return nr_entries + hb->nr_callchain_rows;
 }
 
-static void hist_browser__refresh_dimensions(struct hist_browser *browser)
+static void hist_browser__refresh_dimensions(struct ui_browser *browser)
 {
+       struct hist_browser *hb = container_of(browser, struct hist_browser, b);
+
        /* 3 == +/- toggle symbol before actual hist_entry rendering */
-       browser->b.width = 3 + (hists__sort_list_width(browser->hists) +
-                            sizeof("[k]"));
+       browser->width = 3 + (hists__sort_list_width(hb->hists) + 
sizeof("[k]"));
+       /*
+        * FIXME: Just keeping existing behaviour, but this really should be
+        *        before updating browser->width, as it will invalidate the
+        *        calculation above. Fix this and the fallout in another
+        *        changeset.
+        */
+       ui_browser__refresh_dimensions(browser);
 }
 
 static void hist_browser__gotorc(struct hist_browser *browser, int row, int 
column)
@@ -78,7 +86,7 @@ static void hist_browser__reset(struct hist_browser *browser)
 
        hist_browser__update_nr_entries(browser);
        browser->b.nr_entries = hist_browser__nr_entries(browser);
-       hist_browser__refresh_dimensions(browser);
+       hist_browser__refresh_dimensions(&browser->b);
        ui_browser__reset_index(&browser->b);
 }
 
@@ -360,7 +368,6 @@ static int hist_browser__run(struct hist_browser *browser,
        browser->b.entries = &browser->hists->entries;
        browser->b.nr_entries = hist_browser__nr_entries(browser);
 
-       hist_browser__refresh_dimensions(browser);
        hists__browser_title(browser->hists, title, sizeof(title));
 
        if (ui_browser__show(&browser->b, title,
@@ -1195,6 +1202,7 @@ static struct hist_browser *hist_browser__new(struct 
hists *hists)
        if (browser) {
                browser->hists = hists;
                browser->b.refresh = hist_browser__refresh;
+               browser->b.refresh_dimensions = 
hist_browser__refresh_dimensions;
                browser->b.seek = ui_browser__hists_seek;
                browser->b.use_navkeypressed = true;
        }
-- 
1.9.3

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