public override void AudioVisualizerPaint() //object sender, PaintEventArgs e)
{
InitPaint();
if (_wavePeaks != null)
{
bool showSpectrogram = IsSpectrogramAvailable && ShowSpectrogram;
bool showSpectrogramOnly = showSpectrogram && !ShowWaveform;
int waveformHeight = Height - (showSpectrogram ? SpectrogramDisplayHeight : 0);
// background
DrawBackground();
// grid lines
if (ShowGridLines && !showSpectrogramOnly)
{
DrawGridLines(waveformHeight);
}
// spectrogram
if (showSpectrogram)
{
DrawSpectrogram();
}
// waveform
if (ShowWaveform)
{
var colorNormal = Color.ToCGColor();
var colorSelected = SelectedColor.ToCGColor();
var isSelectedHelper = new IsSelectedHelper(_allSelectedParagraphs, _wavePeaks.SampleRate);
int baseHeight = (int)(_wavePeaks.HighestPeak / VerticalZoomFactor);
int halfWaveformHeight = waveformHeight / 2;
Func <float, float> calculateY = (value) =>
{
float offset = (value / baseHeight) * halfWaveformHeight;
if (offset > halfWaveformHeight)
{
offset = halfWaveformHeight;
}
if (offset < -halfWaveformHeight)
{
offset = -halfWaveformHeight;
}
return(halfWaveformHeight - offset);
};
for (int x = 0; x < Width; x++)
{
float pos = (float)RelativeXPositionToSeconds(x) * _wavePeaks.SampleRate;
int pos0 = (int)pos;
int pos1 = pos0 + 1;
if (pos1 >= _wavePeaks.Peaks.Count)
{
break;
}
float pos1Weight = pos - pos0;
float pos0Weight = 1F - pos1Weight;
var peak0 = _wavePeaks.Peaks[pos0];
var peak1 = _wavePeaks.Peaks[pos1];
float max = peak0.Max * pos0Weight + peak1.Max * pos1Weight;
float min = peak0.Min * pos0Weight + peak1.Min * pos1Weight;
float yMax = calculateY(max);
float yMin = Math.Max(calculateY(min), yMax + 0.1F);
var c = isSelectedHelper.IsSelected(pos0) ? colorNormal : colorSelected;
_context.SetStrokeColor(c);
DrawLine(x, (int)Math.Round(yMax), x, (int)Math.Round(yMin));
}
}
// time line
if (!showSpectrogramOnly)
{
DrawTimeLine(waveformHeight);
}
// scene changes
// if (_sceneChanges != null)
// {
// foreach (double time in _sceneChanges)
// {
// int pos = SecondsToXPosition(time - StartPositionSeconds);
// if (pos > 0 && pos < Width)
// {
// using (var p = new Pen(Color.AntiqueWhite))
// graphics.DrawLine(p, pos, 0, pos, Height);
// }
// }
// }
// current video position
if (_currentVideoPositionSeconds > 0)
{
int pos = SecondsToXPosition(_currentVideoPositionSeconds - StartPositionSeconds);
if (pos > 0 && pos < Width)
{
_context.SetStrokeColor(Color.Turquoise.ToCGColor());
DrawLine(pos, 0, pos, Height);
// using (var p = new Pen(Color.Turquoise))
// graphics.DrawLine(p, pos, 0, pos, Height);
}
}
// paragraphs
foreach (Paragraph p in _displayableParagraphs)
{
if (p.EndTime.TotalSeconds >= StartPositionSeconds && p.StartTime.TotalSeconds <= EndPositionSeconds)
{
DrawParagraph(p);
}
}
// current selection
// if (NewSelectionParagraph != null)
// {
// int currentRegionLeft = SecondsToXPosition(NewSelectionParagraph.StartTime.TotalSeconds - StartPositionSeconds);
// int currentRegionRight = SecondsToXPosition(NewSelectionParagraph.EndTime.TotalSeconds - StartPositionSeconds);
// int currentRegionWidth = currentRegionRight - currentRegionLeft;
// if (currentRegionRight >= 0 && currentRegionLeft <= Width)
// {
// using (var brush = new SolidBrush(Color.FromArgb(128, 255, 255, 255)))
// graphics.FillRectangle(brush, currentRegionLeft, 0, currentRegionWidth, graphics.VisibleClipBounds.Height);
//
// if (currentRegionWidth > 40)
// {
// using (var brush = new SolidBrush(Color.Turquoise))
// graphics.DrawString(string.Format("{0:0.###} {1}", ((double)currentRegionWidth / _wavePeaks.SampleRate / _zoomFactor), Configuration.Settings.Language.Waveform.Seconds), Font, brush, new PointF(currentRegionLeft + 3, Height - 32));
// }
// }
// }
}
else
{
DrawBackground();
if (ShowGridLines)
{
DrawGridLines(Height);
}
// using (var textBrush = new SolidBrush(TextColor))
// using (var textFont = new Font(Font.FontFamily, 8))
// {
// if (Width > 90)
// {
// graphics.DrawString(WaveformNotLoadedText, textFont, textBrush, new PointF(Width / 2 - 65, Height / 2 - 10));
// }
// else
// {
// using (var stringFormat = new StringFormat(StringFormatFlags.DirectionVertical))
// graphics.DrawString(WaveformNotLoadedText, textFont, textBrush, new PointF(1, 10), stringFormat);
// }
// }
}
// if (Focused)
// {
// using (var p = new Pen(SelectedColor))
// graphics.DrawRectangle(p, new Rectangle(0, 0, Width - 1, Height - 1));
// }
// _imageView.Image = _bitmap.ToNSImage();
_imageView.Image = new NSImage(_context.ToImage(), new CGSize(Width, Height));
;
// public CGImage ToCGImage()
// {
// var rawData = new byte[Width * Height * 4];
// var bytesPerPixel = 4;
// var bytesPerRow = bytesPerPixel * Width;
// var bitsPerComponent = 8;
// using (var colorSpace = CGColorSpace.CreateDeviceRGB())
// {
// using (var context = new CGBitmapContext(rawData, Width, Height, bitsPerComponent, bytesPerRow, colorSpace, CGBitmapFlags.ByteOrder32Big | CGBitmapFlags.PremultipliedLast))
// {
// for (int y = 0; y < Height; y++)
// {
// for (int x = 0; x < Width; x++)
// {
// Color c = GetPixel(x, y);
// var i = bytesPerRow * y + bytesPerPixel * x;
// rawData[i + 0] = c.R;
// rawData[i + 1] = c.G;
// rawData[i + 2] = c.B;
// rawData[i + 3] = c.A;
// }
// }
// //context.Flush();
//
// context.SetFillColor(new CGColor(1,0,0, 1));
// context.FillRect(new CGRect(0,0, 20, 20));
//
// context.SetTextDrawingMode(CGTextDrawingMode.Clip);
// context.SetFillColor(new CGColor(0,0,0, 1));
// context.ShowTextAtPoint(20, 20, "HEJ");
// context.SetTextDrawingMode(CGTextDrawingMode.Fill);
// context.ShowTextAtPoint(30, 30, "Yo");
// return context.ToImage();
// }
// }
// }
}
