private void DrawTiming(Canvas canvas)
{
canvas.Children.Clear();
_timingDatas = TimingMapParser.Parse(txtData.Text);
InitDrawParam();
// determine the maximum width from all symbols
var max = 0.0;
foreach (var timingData in _timingDatas)
{
var x = GraphicHelper.MeasureTextWidth(timingData.Symbol, 14);
if (max < x)
{
max = x;
}
}
// ensure we draw behind symbol
DrawParam.StartX = (int)max;
// determine the width of entire diagram
max = 0;
foreach (var timingData in _timingDatas)
{
if (max < (int)timingData.Timing.Length)
{
max = (int)timingData.Timing.Length;
}
}
// re-calculate the size of canvas
canvas.Width = DrawParam.StartX + (max * DrawParam.UnitX) + (DrawParam.Margin * 2);
canvas.Height = _timingDatas.Count * (DrawParam.UnitY + DrawParam.VerticalSpace) + DrawParam.StartY;
_markerDrawer.Draw((int)max);
var lineIndex = 0;
TimingCharacterDrawer marker = null;
// draw content
foreach (var timingMap in _timingDatas)
{
var drawer = new TimingCharacterDrawer(lineIndex, timingMap);
if (drawer.IsMarker() == true)
{
marker = drawer;
lineIndex++;
continue;
}
drawer.Draw();
lineIndex++;
DrawParam.StartY += DrawParam.VerticalSpace;
}
if (marker != null)
{
marker.DrawMarker(lineIndex);
}
}
public MainViewModel()
{
DrawParam.StartX = 50;
DrawParam.StartY = 50;
DrawParam.UnitX = 10;
DrawParam.UnitY = 30;
DrawParam.Margin = 10;
DrawParam.VerticalSpace = 50;
DrawParam.MarkHeight = 10;
TimingData = InitTimingData;
MarkerData = InitMarkerData;
TimingDatas = TimingMapParser.Parse(TimingData);
EditStatusString = EditStatus.Unchanged.ToString();
MessagingCenter.Subscribe <MessageToken>(this, "message", (item) =>
{
if (item.TokenType == MessageTokenType.KeyChanged)
{
EditStatus = EditStatus.Modified;
TimingDatas = TimingMapParser.Parse(TimingData);
UpdateTimingDiagram();
}
});
InputCharCommand = new Command((ch) =>
{
Debug.WriteLine("symbol label clicked, parameter: " + ch);
});
ChangeSymbolCommand = new Command((arg) =>
{
Debug.WriteLine("symbol label clicked, parameter: " + arg);
});
ChangeTimingCommand = new Command((arg) =>
{
Debug.WriteLine("Timing data changed : " + arg);
});
PaintSurfaceCommand = new Command((arg) =>
{
var args = arg as SKPaintSurfaceEventArgs;
var info = args.Info;
var surface = args.Surface;
var canvas = surface.Canvas;
if (_bitmap == null)
{
_bitmap = new SKBitmap(info);
}
if (_drawEngine == null)
{
_drawEngine = new SkiaDrawEngine(_bitmap);
}
TimingDatas = TimingMapParser.Parse(TimingData);
_bitmap = _drawEngine.Draw(TimingDatas);
if (_bitmap != null)
{
canvas.DrawBitmap(_bitmap, 0, 0);
}
UpdateTimingDiagram();
});
UpdateTimingDiagram();
}