[PATCH 01/16] perf ui browser: Add ->rows to disambiguate from ->height

From: Arnaldo Carvalho de Melo
Date: Tue Jul 08 2014 - 15:03:30 EST

From: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>

The ui_browser->height is about the whole browser "window", including
any header, status lines or any other space needed for some "Yes", "No",
etc buttons a descendent browser, like hist_browser, may have.

Since the navigation is done mostly on the ui_browser methods, it needs
to know how many rows are on the screen, while details about what other
components are, say, if a header (that may be composed of multiple
lines, etc) is present.

Besides this we'll need to add a ui_browser->refresh_dimensions() hook
so that browsers like hist_browser can update ->rows in response to
screen resizes, this will come in a follow up patch.

This patch just adds ->rows and updates it when updating ->height, keeps
using ->height for the only other widget that can come with ui_browser,
the scrollbar, that goes on using all the height on the rightmost column
in the screen, using ->rows for the keyboard navigation needs.

Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Don Zickus <dzickus@xxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Mike Galbraith <efault@xxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/n/tip-xexmwg1mv7u03j5imn66jdak@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/ui/browser.c | 30 +++++++++++++++---------------
tools/perf/ui/browser.h | 2 +-
tools/perf/ui/browsers/hists.c | 16 ++++++++--------
3 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 9d2294efc00c..adb294a3ec08 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -150,7 +150,7 @@ unsigned int ui_browser__rb_tree_refresh(struct ui_browser *browser)
while (nd != NULL) {
ui_browser__gotorc(browser, row, 0);
browser->write(browser, nd, row);
- if (++row == browser->height)
+ if (++row == browser->rows)
break;
nd = rb_next(nd);
}
@@ -166,7 +166,7 @@ bool ui_browser__is_current_entry(struct ui_browser *browser, unsigned row)
void ui_browser__refresh_dimensions(struct ui_browser *browser)
{
browser->width = SLtt_Screen_Cols - 1;
- browser->height = SLtt_Screen_Rows - 2;
+ browser->height = browser->rows = SLtt_Screen_Rows - 2;
browser->y = 1;
browser->x = 0;
}
@@ -389,7 +389,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
if (browser->index == browser->nr_entries - 1)
break;
++browser->index;
- if (browser->index == browser->top_idx + browser->height) {
+ if (browser->index == browser->top_idx + browser->rows) {
++browser->top_idx;
browser->seek(browser, +1, SEEK_CUR);
}
@@ -405,10 +405,10 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
break;
case K_PGDN:
case ' ':
- if (browser->top_idx + browser->height > browser->nr_entries - 1)
+ if (browser->top_idx + browser->rows > browser->nr_entries - 1)
break;

- offset = browser->height;
+ offset = browser->rows;
if (browser->index + offset > browser->nr_entries - 1)
offset = browser->nr_entries - 1 - browser->index;
browser->index += offset;
@@ -419,10 +419,10 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
if (browser->top_idx == 0)
break;

- if (browser->top_idx < browser->height)
+ if (browser->top_idx < browser->rows)
offset = browser->top_idx;
else
- offset = browser->height;
+ offset = browser->rows;

browser->index -= offset;
browser->top_idx -= offset;
@@ -432,7 +432,7 @@ int ui_browser__run(struct ui_browser *browser, int delay_secs)
ui_browser__reset_index(browser);
break;
case K_END:
- offset = browser->height - 1;
+ offset = browser->rows - 1;
if (offset >= browser->nr_entries)
offset = browser->nr_entries - 1;

@@ -462,7 +462,7 @@ unsigned int ui_browser__list_head_refresh(struct ui_browser *browser)
if (!browser->filter || !browser->filter(browser, pos)) {
ui_browser__gotorc(browser, row, 0);
browser->write(browser, pos, row);
- if (++row == browser->height)
+ if (++row == browser->rows)
break;
}
}
@@ -587,7 +587,7 @@ unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
if (!browser->filter || !browser->filter(browser, *pos)) {
ui_browser__gotorc(browser, row, 0);
browser->write(browser, pos, row);
- if (++row == browser->height)
+ if (++row == browser->rows)
break;
}

@@ -623,7 +623,7 @@ static void __ui_browser__line_arrow_up(struct ui_browser *browser,

SLsmg_set_char_set(1);

- if (start < browser->top_idx + browser->height) {
+ if (start < browser->top_idx + browser->rows) {
row = start - browser->top_idx;
ui_browser__gotorc(browser, row, column);
SLsmg_write_char(SLSMG_LLCORN_CHAR);
@@ -633,7 +633,7 @@ static void __ui_browser__line_arrow_up(struct ui_browser *browser,
if (row-- == 0)
goto out;
} else
- row = browser->height - 1;
+ row = browser->rows - 1;

if (end > browser->top_idx)
end_row = end - browser->top_idx;
@@ -675,8 +675,8 @@ static void __ui_browser__line_arrow_down(struct ui_browser *browser,
} else
row = 0;

- if (end >= browser->top_idx + browser->height)
- end_row = browser->height - 1;
+ if (end >= browser->top_idx + browser->rows)
+ end_row = browser->rows - 1;
else
end_row = end - browser->top_idx;

@@ -684,7 +684,7 @@ static void __ui_browser__line_arrow_down(struct ui_browser *browser,
SLsmg_draw_vline(end_row - row + 1);

ui_browser__gotorc(browser, end_row, column);
- if (end < browser->top_idx + browser->height) {
+ if (end < browser->top_idx + browser->rows) {
SLsmg_write_char(SLSMG_LLCORN_CHAR);
ui_browser__gotorc(browser, end_row, column + 1);
SLsmg_write_char(SLSMG_HLINE_CHAR);
diff --git a/tools/perf/ui/browser.h b/tools/perf/ui/browser.h
index 03d4d6295f10..cb8f39a1646f 100644
--- a/tools/perf/ui/browser.h
+++ b/tools/perf/ui/browser.h
@@ -14,7 +14,7 @@
struct ui_browser {
u64 index, top_idx;
void *top, *entries;
- u16 y, x, width, height;
+ u16 y, x, width, height, rows;
int current_color;
void *priv;
const char *title;
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 2185091c5227..e16aff45b564 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -392,10 +392,10 @@ static int hist_browser__run(struct hist_browser *browser,
struct hist_entry *h = rb_entry(browser->b.top,
struct hist_entry, rb_node);
ui_helpline__pop();
- ui_helpline__fpush("%d: nr_ent=(%d,%d), height=%d, idx=%d, fve: idx=%d, row_off=%d, nrows=%d",
+ ui_helpline__fpush("%d: nr_ent=(%d,%d), rows=%d, idx=%d, fve: idx=%d, row_off=%d, nrows=%d",
seq++, browser->b.nr_entries,
browser->hists->nr_entries,
- browser->b.height,
+ browser->b.rows,
browser->b.index,
browser->b.top_idx,
h->row_offset, h->nr_rows);
@@ -514,7 +514,7 @@ static int hist_browser__show_callchain_node_rb_tree(struct hist_browser *browse
slsmg_write_nstring(str, width);
free(alloc_str);

- if (++row == browser->b.height)
+ if (++row == browser->b.rows)
goto out;
do_next:
if (folded_sign == '+')
@@ -527,7 +527,7 @@ do_next:
new_level, row, row_offset,
is_current_entry);
}
- if (row == browser->b.height)
+ if (row == browser->b.rows)
goto out;
node = next;
}
@@ -573,7 +573,7 @@ static int hist_browser__show_callchain_node(struct hist_browser *browser,
slsmg_printf("%c ", folded_sign);
slsmg_write_nstring(s, width - 2);

- if (++row == browser->b.height)
+ if (++row == browser->b.rows)
goto out;
}

@@ -602,7 +602,7 @@ static int hist_browser__show_callchain(struct hist_browser *browser,
row += hist_browser__show_callchain_node(browser, node, level,
row, row_offset,
is_current_entry);
- if (row == browser->b.height)
+ if (row == browser->b.rows)
break;
}

@@ -776,7 +776,7 @@ static int hist_browser__show_entry(struct hist_browser *browser,
} else
--row_offset;

- if (folded_sign == '-' && row != browser->b.height) {
+ if (folded_sign == '-' && row != browser->b.rows) {
printed += hist_browser__show_callchain(browser, &entry->sorted_chain,
1, row, &row_offset,
&current_entry);
@@ -817,7 +817,7 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
continue;

row += hist_browser__show_entry(hb, h, row);
- if (row == browser->height)
+ if (row == browser->rows)
break;
}

--
1.9.3

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