# HG changeset patch
# User Chris Cannam
# Date 1386091945 0
# Node ID 8072264dc61f2ac9dfae1eec3de92800dca3df78
# Parent  d8fc9659a206deb8e391d1060b1726b722e2c5ee
Pull out PianoScale into separate class

diff -r d8fc9659a206 -r 8072264dc61f layer/PianoScale.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layer/PianoScale.cpp	Tue Dec 03 17:32:25 2013 +0000
@@ -0,0 +1,85 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006-2013 Chris Cannam and QMUL.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "PianoScale.h"
+
+#include <QPainter>
+
+#include <cmath>
+
+#include "base/Pitch.h"
+
+#include "view/View.h"
+
+void
+PianoScale::paintPianoVertical(View *v,
+			       QPainter &paint,
+			       QRect r,
+			       float minf,
+			       float maxf)
+{
+    int x0 = r.x(), y0 = r.y(), x1 = r.x() + r.width(), y1 = r.y() + r.height();
+
+    paint.drawLine(x0, y0, x0, y1);
+
+    int py = y1, ppy = y1;
+    paint.setBrush(paint.pen().color());
+
+    for (int i = 0; i < 128; ++i) {
+
+	float f = Pitch::getFrequencyForPitch(i);
+	int y = lrintf(v->getYForFrequency(f, minf, maxf, true));
+
+	if (y < y0 - 2) break;
+	if (y > y1 + 2) {
+	    continue;
+	}
+	
+	int n = (i % 12);
+	
+	if (n == 1) {
+	    // C# -- fill the C from here
+	    QColor col = Qt::gray;
+	    if (i == 61) { // filling middle C
+		col = Qt::blue;
+		col = col.light(150);
+	    }
+	    if (ppy - y > 2) {
+		paint.fillRect(x0 + 1,
+			       y,
+			       x1 - x0,
+			       (py + ppy) / 2 - y,
+			       col);
+	    }
+	}
+	
+	if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
+	    // black notes
+	    paint.drawLine(x0 + 1, y, x1, y);
+	    int rh = ((py - y) / 4) * 2;
+	    if (rh < 2) rh = 2;
+	    paint.drawRect(x0 + 1, y - (py-y)/4, (x1 - x0) / 2, rh);
+	} else if (n == 0 || n == 5) {
+	    // C, F
+	    if (py < y1) {
+		paint.drawLine(x0 + 1, (y + py) / 2, x1, (y + py) / 2);
+	    }
+	}
+	
+	ppy = py;
+	py = y;
+    }
+}
+
diff -r d8fc9659a206 -r 8072264dc61f layer/PianoScale.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layer/PianoScale.h	Tue Dec 03 17:32:25 2013 +0000
@@ -0,0 +1,34 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006-2013 Chris Cannam and QMUL.
+    
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef PIANO_SCALE_H
+#define PIANO_SCALE_H
+
+#include <QRect>
+
+class QPainter;
+class View;
+
+class PianoScale
+{
+public:
+    void paintPianoVertical
+    (View *v, QPainter &paint, QRect rect, float minf, float maxf);
+};
+
+#endif
+
+
+    
diff -r d8fc9659a206 -r 8072264dc61f layer/SpectrogramLayer.cpp
--- a/layer/SpectrogramLayer.cpp	Tue Dec 03 12:34:38 2013 +0000
+++ b/layer/SpectrogramLayer.cpp	Tue Dec 03 17:32:25 2013 +0000
@@ -27,6 +27,7 @@
 #include "ColourMapper.h"
 #include "ImageRegionFinder.h"
 #include "data/model/Dense3DModelPeakCache.h"
+#include "PianoScale.h"
 
 #include <QPainter>
 #include <QImage>
@@ -3435,58 +3436,9 @@
 
         // piano keyboard
 
-	paint.drawLine(w - pkw - 1, 0, w - pkw - 1, h);
-
-	float minf = getEffectiveMinFrequency();
-	float maxf = getEffectiveMaxFrequency();
-
-	int py = h, ppy = h;
-	paint.setBrush(paint.pen().color());
-
-	for (int i = 0; i < 128; ++i) {
-
-	    float f = Pitch::getFrequencyForPitch(i);
-	    int y = lrintf(v->getYForFrequency(f, minf, maxf, true));
-
-            if (y < -2) break;
-            if (y > h + 2) {
-                continue;
-            }
-
-	    int n = (i % 12);
-
-            if (n == 1) {
-                // C# -- fill the C from here
-                QColor col = Qt::gray;
-                if (i == 61) { // filling middle C
-                    col = Qt::blue;
-                    col = col.light(150);
-                }
-                if (ppy - y > 2) {
-                    paint.fillRect(w - pkw,
-                                   y,
-                                   pkw,
-                                   (py + ppy) / 2 - y,
-                                   col);
-                }
-            }
-
-	    if (n == 1 || n == 3 || n == 6 || n == 8 || n == 10) {
-		// black notes
-		paint.drawLine(w - pkw, y, w, y);
-		int rh = ((py - y) / 4) * 2;
-		if (rh < 2) rh = 2;
-		paint.drawRect(w - pkw, y - (py-y)/4, pkw/2, rh);
-	    } else if (n == 0 || n == 5) {
-		// C, F
-		if (py < h) {
-		    paint.drawLine(w - pkw, (y + py) / 2, w, (y + py) / 2);
-		}
-	    }
-
-            ppy = py;
-	    py = y;
-	}
+        PianoScale().paintPianoVertical
+            (v, paint, QRect(w - pkw - 1, 0, pkw, h),
+             getEffectiveMinFrequency(), getEffectiveMaxFrequency());
     }
 
     m_haveDetailedScale = detailed;
diff -r d8fc9659a206 -r 8072264dc61f svgui.pro
--- a/svgui.pro	Tue Dec 03 12:34:38 2013 +0000
+++ b/svgui.pro	Tue Dec 03 17:32:25 2013 +0000
@@ -36,6 +36,7 @@
            layer/LayerFactory.h \
            layer/NoteLayer.h \
            layer/PaintAssistant.h \
+           layer/PianoScale.h \
            layer/RegionLayer.h \
            layer/SingleColourLayer.h \
            layer/SliceableLayer.h \
@@ -56,6 +57,7 @@
            layer/LayerFactory.cpp \
            layer/NoteLayer.cpp \
            layer/PaintAssistant.cpp \
+           layer/PianoScale.cpp \
            layer/RegionLayer.cpp \
            layer/SingleColourLayer.cpp \
            layer/SliceLayer.cpp \