protected override void OnPaint(PaintEventArgs e)
{
if (moving)
{
e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.NearestNeighbor;
}
else
{
e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Bilinear;
}
if (spectrogramImage == null)
{
e.Graphics.Clear(Color.White);
return;
}
projectionHeightRatio = spectrogramImage.Height / projectionRect.Height;
projectionWidthRatio = spectrogramImage.Width / projectionRect.Width;
e.Graphics.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceCopy;
e.Graphics.DrawImage(spectrogramImage, new Rectangle(PADDING_LEFT, 0, this.Width - PADDING_LEFT, this.Height - PADDING_BOTTOM), projectionRect, GraphicsUnit.Pixel);
e.Graphics.CompositingMode = System.Drawing.Drawing2D.CompositingMode.SourceOver;
if (ShowNoteAnnotations)
{
SpectrogramHandler.NoteAnnotation[] noteAnnotations = DrawNoteAnnotations();
if (noteAnnotations != null)
{
float penSize = Math.Min(Math.Max(2 * projectionHeightRatio, 1), 12);
using (Pen p = new Pen(Color.Green, penSize))
{
foreach (SpectrogramHandler.NoteAnnotation note in noteAnnotations)
{
int alpha = Math.Min(Math.Max((int)(note.magnitude / MySpectrogramHandler.GetMaxNoteMagnitude() * 255), 127), 220);
p.Color = Color.FromArgb(alpha, 0, 128, 0);
e.Graphics.DrawLine(p, new Point(note.shape.X, (int)(note.shape.Y + penSize / 2)), new Point(note.shape.X + note.shape.Width, (int)(note.shape.Y + penSize / 2)));
if (penSize > 4)
{
e.Graphics.DrawString(note.name, new Font(Form1.fonts.Families[0], penSize), new SolidBrush(Color.White), new Point(note.shape.X + 5, (int)(note.shape.Y - penSize / 2)));
}
}
}
}
}
if (ShowChordKeyAnnotations)
{
SpectrogramHandler.ChordAnnotation[] chordAnnotations = DrawChordAnnotations();
if (chordAnnotations != null)
{
foreach (SpectrogramHandler.ChordAnnotation chord in chordAnnotations)
{
Pen p = new Pen(Color.FromArgb(200, Analyser.GetNoteColor(30, 60, (int)chord.confidence)), 5);
e.Graphics.DrawLine(p, new Point(chord.shape.X + 2, chord.shape.Y), new Point(chord.shape.X + chord.shape.Width - 2, chord.shape.Y));
int textX = Math.Max(chord.shape.X, PADDING_LEFT) + Math.Min(chord.shape.Width, this.Width - PADDING_LEFT) / 2 - 4 * chord.name.Length;
e.Graphics.DrawString(chord.name, new Font(Form1.fonts.Families[0], 8), new SolidBrush(Color.White), new Point(textX, chord.shape.Y + 6));
}
}
SpectrogramHandler.KeyAnnotation[] keyAnnotations = DrawKeyAnnotations();
if (keyAnnotations != null)
{
using (Pen p = new Pen(Color.FromArgb(200, Color.Green), 10))
{
foreach (SpectrogramHandler.KeyAnnotation key in keyAnnotations)
{
e.Graphics.DrawLine(p, new Point(key.shape.X + 2, key.shape.Y), new Point(key.shape.X + key.shape.Width - 2, key.shape.Y));
int textX = Math.Max(key.shape.X, PADDING_LEFT) + Math.Min(key.shape.Width, this.Width - PADDING_LEFT) / 2 - 4 * key.name.Length;
e.Graphics.DrawString(key.name, new Font(Form1.fonts.Families[0], 8), new SolidBrush(Color.White), new Point(textX, key.shape.Y - 10));
}
}
}
}
if (projectionRect != prevProjectionRect)
{
Overlay.DrawTimeAxis();
Overlay.DrawFrequencyAxis();
prevProjectionRect = projectionRect;
}
base.OnPaint(e);
}
public void GenerateAnnotations()
{
MySpectrogramHandler.GenerateAnnotations();
}
