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Spectral density ruler

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This commit is contained in:
Alexander Kojevnikov 2011-03-28 16:08:30 +08:00
parent a741fb0d22
commit 025d0bbe1e
2 changed files with 26 additions and 3 deletions
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2
src/spek-ruler.vala
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@ -93,7 +93,7 @@ namespace Spek {
if (pos == Position.TOP) {
cr.move_to (p - w / 2, -GAP - h);
} else if (pos == Position.RIGHT){
cr.move_to (w + GAP, p + h / 2);
cr.move_to (GAP, p + h / 2);
} else if (pos == Position.BOTTOM) {
cr.move_to (p - w / 2, GAP + h);
} else if (pos == Position.LEFT){

27
src/spek-spectrogram.vala
View File

@ -36,7 +36,7 @@ namespace Spek {
private const int LPAD = 60;
private const int TPAD = 60;
private const int RPAD = 60;
private const int RPAD = 80;
private const int BPAD = 40;
private const int GAP = 10;
private const int RULER = 10;
@ -181,11 +181,13 @@ namespace Spek {
var duration_seconds = (int) pipeline.duration;
var time_ruler = new Ruler (
Ruler.Position.BOTTOM,
// TODO: i18n
"00:00",
{1, 2, 5, 10, 20, 30, 1*60, 2*60, 5*60, 10*60, 20*60, 30*60},
duration_seconds,
1.5,
unit => (w - LPAD - RPAD) * unit / duration_seconds,
// TODO: i18n
unit => "%d:%02d".printf (unit / 60, unit % 60));
cr.translate (LPAD, h - BPAD);
time_ruler.draw (cr, layout);
@ -195,7 +197,7 @@ namespace Spek {
var freq = pipeline.sample_rate / 2;
var rate_ruler = new Ruler (
Ruler.Position.LEFT,
"00 kHz",
_("00 kHz"),
{1000, 2000, 5000, 10000, 20000},
freq,
3.0,
@ -238,6 +240,27 @@ namespace Spek {
cr.set_source_surface (palette, 0, 0);
cr.paint ();
cr.identity_matrix ();
// Prepare to draw the ruler.
cr.set_source_rgb (1, 1, 1);
cr.set_line_width (1);
cr.set_antialias (Antialias.NONE);
layout.set_font_description (FontDescription.from_string (
"Sans " + (8 * FONT_SCALE).to_string ()));
layout.set_width (-1);
// Spectral density.
var density_ruler = new Ruler (
Ruler.Position.RIGHT,
_("-00 dB"),
{1, 2, 5, 10, 20, 50},
-THRESHOLD,
3.0,
unit => -(h - TPAD - BPAD) * unit / THRESHOLD,
unit => _("%d dB").printf (unit + THRESHOLD));
cr.translate (w - RPAD + GAP + RULER, TPAD);
density_ruler.draw (cr, layout);
cr.identity_matrix ();
}
private void put_pixel (ImageSurface surface, int x, int y, uint32 color) {