diff options
Diffstat (limited to 'perf/cairo-perf-chart.c')
| -rw-r--r-- | perf/cairo-perf-chart.c | 48 |
1 files changed, 44 insertions, 4 deletions
diff --git a/perf/cairo-perf-chart.c b/perf/cairo-perf-chart.c index 8d3d5147..df0bd88d 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); } } |