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perf: Avoid vertically stretching the histogram

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If we have more rows than the max_count in any column, we end up
stretching the histogram vertically, which makes it harder to read.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-06-11 11:57:04 +01:00
parent b9f0ef4496
commit 2c097e6e6b
1 changed files with 6 additions and 3 deletions
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9
perf/cairo-stats.c
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@ -156,10 +156,13 @@ void
_cairo_histogram_printf (cairo_histogram_t *h,
FILE *file)
{
int x, y;
int x, y, num_rows;
for (y = 0; y < h->num_rows; y++) {
int min_count = (h->num_rows - y - 1) * h->max_count / h->num_rows;
num_rows = h->num_rows;
if (h->max_count < num_rows)
num_rows = h->max_count;
for (y = 0; y < num_rows; y++) {
int min_count = ((num_rows - y - 1) * h->max_count) / num_rows + h->max_count / (2*num_rows);
fprintf (file, "|");
for (x = 0; x < h->num_columns; x++)
fprintf (file, "%c", h->columns[x] > min_count ? 'x' : ' ');