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Right and top rulers

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This commit is contained in:
Alexander Kojevnikov 2011-03-28 15:45:41 +08:00
parent bf139c96a9
commit a741fb0d22
2 changed files with 37 additions and 14 deletions
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45
src/spek-ruler.vala
View File

@ -21,7 +21,14 @@ using Pango;
namespace Spek {
class Ruler : GLib.Object {
public enum Position {
TOP,
RIGHT,
BOTTOM,
LEFT
}
private Position pos;
private string sample_label;
private int[] factors;
private int units;
@ -33,8 +40,10 @@ namespace Spek {
public delegate string FormatTick (int unit);
public Ruler (
string sample_label, int[] factors, int units, double spacing,
Position pos, string sample_label,
int[] factors, int units, double spacing,
UnitToPixel unit_to_pixel, FormatTick format_tick) {
this.pos = pos;
this.sample_label = sample_label;
this.factors = factors;
this.units = units;
@ -43,12 +52,12 @@ namespace Spek {
this.format_tick = format_tick;
}
public void draw (Cairo.Context cr, Pango.Layout layout, bool horizontal) {
public void draw (Cairo.Context cr, Pango.Layout layout) {
// Mesure the sample label.
int w, h;
layout.set_text (sample_label, -1);
layout.get_pixel_size (out w, out h);
var size = horizontal ? w : h;
var size = pos == Position.TOP || pos == Position.BOTTOM ? w : h;
// Select the factor to use, we want some space between the labels.
int factor = 0;
@ -76,20 +85,32 @@ namespace Spek {
double TICK_LEN = 4;
foreach (var tick in ticks) {
var label = format_tick (tick);
var pos = unit_to_pixel (horizontal ? tick : units - tick);
var p = unit_to_pixel (
pos == Position.TOP || pos == Position.BOTTOM
? tick : units - tick);
layout.set_text (label, -1);
layout.get_pixel_size (out w, out h);
if (horizontal) {
cr.move_to (pos - w / 2, GAP + h);
} else {
cr.move_to (-w - GAP, pos + h / 2);
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);
} else if (pos == Position.BOTTOM) {
cr.move_to (p - w / 2, GAP + h);
} else if (pos == Position.LEFT){
cr.move_to (-w - GAP, p + h / 2);
}
cairo_show_layout_line (cr, layout.get_line (0));
if (horizontal) {
cr.move_to (pos, 0);
if (pos == Position.TOP) {
cr.move_to (p, 0);
cr.rel_line_to (0, -TICK_LEN);
} else if (pos == Position.RIGHT) {
cr.move_to (0, p);
cr.rel_line_to (TICK_LEN, 0);
} else if (pos == Position.BOTTOM) {
cr.move_to (p, 0);
cr.rel_line_to (0, TICK_LEN);
} else {
cr.move_to (0, pos);
} else if (pos == Position.LEFT) {
cr.move_to (0, p);
cr.rel_line_to (-TICK_LEN, 0);
}
cr.stroke ();

6
src/spek-spectrogram.vala
View File

@ -180,6 +180,7 @@ namespace Spek {
// Time ruler.
var duration_seconds = (int) pipeline.duration;
var time_ruler = new Ruler (
Ruler.Position.BOTTOM,
"00:00",
{1, 2, 5, 10, 20, 30, 1*60, 2*60, 5*60, 10*60, 20*60, 30*60},
duration_seconds,
@ -187,12 +188,13 @@ namespace Spek {
unit => (w - LPAD - RPAD) * unit / duration_seconds,
unit => "%d:%02d".printf (unit / 60, unit % 60));
cr.translate (LPAD, h - BPAD);
time_ruler.draw (cr, layout, true);
time_ruler.draw (cr, layout);
cr.identity_matrix ();
// Frequency ruler.
var freq = pipeline.sample_rate / 2;
var rate_ruler = new Ruler (
Ruler.Position.LEFT,
"00 kHz",
{1000, 2000, 5000, 10000, 20000},
freq,
@ -200,7 +202,7 @@ namespace Spek {
unit => (h - TPAD - BPAD) * unit / freq,
unit => _("%d kHz").printf (unit / 1000));
cr.translate (LPAD, TPAD);
rate_ruler.draw (cr, layout, false);
rate_ruler.draw (cr, layout);
cr.identity_matrix ();
// File properties.