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align gradient with meter-metrics

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This commit is contained in:
Robin Gareus 2013-07-24 22:57:25 +02:00
parent a9975f44a5
commit 2ec45cfd1b
1 changed files with 14 additions and 13 deletions
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27
libs/gtkmm2ext/fastmeter.cc
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@ -123,7 +123,8 @@ FastMeter::generate_meter_pattern (
{ {
guint8 r,g,b,a; guint8 r,g,b,a;
double knee; double knee;
double soft = 1.5 / (double) height; const double soft = 2.5 / (double) height;
const double offs = -1.0 / (double) height;
cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height); cairo_pattern_t* pat = cairo_pattern_create_linear (0.0, 0.0, 0.0, height);
@ -136,44 +137,44 @@ FastMeter::generate_meter_pattern (
cairo_pattern_add_color_stop_rgb (pat, 0.0, cairo_pattern_add_color_stop_rgb (pat, 0.0,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
knee = ((float)height * stp[3] / 115.0f); // -0dB knee = offs + stp[3] / 115.0f; // -0dB
UINT_TO_RGBA (clr[8], &r, &g, &b, &a); UINT_TO_RGBA (clr[8], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
UINT_TO_RGBA (clr[7], &r, &g, &b, &a); UINT_TO_RGBA (clr[7], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) + soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
knee = ((float)height * stp[2]/ 115.0f); // -3dB || -2dB knee = offs + stp[2]/ 115.0f; // -3dB || -2dB
UINT_TO_RGBA (clr[6], &r, &g, &b, &a); UINT_TO_RGBA (clr[6], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
UINT_TO_RGBA (clr[5], &r, &g, &b, &a); UINT_TO_RGBA (clr[5], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) + soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
knee = ((float)height * stp[1] / 115.0f); // -9dB knee = offs + stp[1] / 115.0f; // -9dB
UINT_TO_RGBA (clr[4], &r, &g, &b, &a); UINT_TO_RGBA (clr[4], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
UINT_TO_RGBA (clr[3], &r, &g, &b, &a); UINT_TO_RGBA (clr[3], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) + soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
knee = ((float)height * stp[0] / 115.0f); // -18dB knee = offs + stp[0] / 115.0f; // -18dB
UINT_TO_RGBA (clr[2], &r, &g, &b, &a); UINT_TO_RGBA (clr[2], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) - soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
UINT_TO_RGBA (clr[1], &r, &g, &b, &a); UINT_TO_RGBA (clr[1], &r, &g, &b, &a);
cairo_pattern_add_color_stop_rgb (pat, 1.0 - (knee/(double)height) + soft, cairo_pattern_add_color_stop_rgb (pat, 1.0 - knee + soft,
r/255.0, g/255.0, b/255.0); r/255.0, g/255.0, b/255.0);
UINT_TO_RGBA (clr[0], &r, &g, &b, &a); // bottom UINT_TO_RGBA (clr[0], &r, &g, &b, &a); // bottom