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authorChris Wilson <chris@chris-wilson.co.uk>2012-01-04 11:03:07 +0000
committerChris Wilson <chris@chris-wilson.co.uk>2012-01-11 12:43:43 +0000
commit42ad7a2385604d6c2715bc2e638e1c75245c8ffe (patch)
treee95317b6cdd336d3b8db8670c7d14692ea6188bf /perf
parent23ca558a051ad7557476c77e6d53b5a76f3eb798 (diff)
perf/chart: Make the columns transculent so that the label behind is visible
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'perf')
-rw-r--r--perf/cairo-perf-chart.c48
1 files changed, 44 insertions, 4 deletions
diff --git a/perf/cairo-perf-chart.c b/perf/cairo-perf-chart.c
index 8d3d51471..df0bd88da 100644
--- a/perf/cairo-perf-chart.c
+++ b/perf/cairo-perf-chart.c
@@ -297,6 +297,28 @@ static void set_report_color (struct chart *chart, int report)
cairo_set_source_rgb (chart->cr, color.red, color.green, color.blue);
}
+static void set_report_gradient (struct chart *chart, int report,
+ double x, double y, double w, double h)
+{
+ struct color color;
+ cairo_pattern_t *p;
+
+ hsv_to_rgb (6. / chart->num_reports * report, .7, .7, &color);
+
+ p = cairo_pattern_create_linear (x, 0, x+w, 0);
+ cairo_pattern_add_color_stop_rgba (p, 0.0,
+ color.red, color.green, color.blue,
+ .50);
+ cairo_pattern_add_color_stop_rgba (p, 0.5,
+ color.red, color.green, color.blue,
+ .50);
+ cairo_pattern_add_color_stop_rgba (p, 1.0,
+ color.red, color.green, color.blue,
+ 1.0);
+ cairo_set_source (chart->cr, p);
+ cairo_pattern_destroy (p);
+}
+
static void
test_background (struct chart *c,
int test)
@@ -327,8 +349,6 @@ add_chart (struct chart *c,
if (fabs (value) < 0.1)
return;
- set_report_color (c, report);
-
if (c->relative) {
cairo_text_extents_t extents;
char buf[80];
@@ -339,11 +359,21 @@ add_chart (struct chart *c,
dx = c->width / (double) (c->num_tests * c->num_reports);
x = dx * (c->num_reports * test + report - .5);
+ set_report_gradient (c, report,
+ floor (x), c->height / 2.,
+ floor (x + dx) - floor (x),
+ ceil (-dy*value - c->height/2.) + c->height/2.);
+
cairo_rectangle (c->cr,
floor (x), c->height / 2.,
floor (x + dx) - floor (x),
ceil (-dy*value - c->height/2.) + c->height/2.);
- cairo_fill (c->cr);
+ cairo_fill_preserve (c->cr);
+ cairo_save (c->cr);
+ cairo_clip_preserve (c->cr);
+ set_report_color (c, report);
+ cairo_stroke (c->cr);
+ cairo_restore (c->cr);
/* Skip the label if the difference between the two is less than 0.1% */
if (fabs (value) < 0.1)
@@ -393,11 +423,21 @@ add_chart (struct chart *c,
dx = c->width / (double) (c->num_tests * (c->num_reports+1));
x = dx * ((c->num_reports+1) * test + report + .5);
+ set_report_gradient (c, report,
+ floor (x), c->height,
+ floor (x + dx) - floor (x),
+ floor (c->height - dy*value) - c->height);
+
cairo_rectangle (c->cr,
floor (x), c->height,
floor (x + dx) - floor (x),
floor (c->height - dy*value) - c->height);
- cairo_fill (c->cr);
+ cairo_fill_preserve (c->cr);
+ cairo_save (c->cr);
+ cairo_clip_preserve (c->cr);
+ set_report_color (c, report);
+ cairo_stroke (c->cr);
+ cairo_restore (c->cr);
}
}