private float PaintGroup(StaveGroup group, float totalHeight, ICanvas canvas)
{
// paint into canvas
var height = group.Height + (GroupSpacing * Scale);
canvas.BeginRender(Width, height);
Renderer.Canvas.Color = Renderer.RenderingResources.MainGlyphColor;
Renderer.Canvas.TextAlign = TextAlign.Left;
// NOTE: we use this negation trick to make the group paint itself to 0/0 coordinates
// since we use partial drawing
group.Paint(0, -group.Y, canvas);
// calculate coordinates for next group
totalHeight += height;
var result = canvas.EndRender();
var args = new RenderFinishedEventArgs();
args.TotalWidth = Width;
args.TotalHeight = totalHeight;
args.Width = Width;
args.Height = height;
args.RenderResult = result;
args.FirstMasterBarIndex = group.FirstBarIndex;
args.LastMasterBarIndex = group.LastBarIndex;
Renderer.OnPartialRenderFinished(args);
return(height);
}
public override void DoLayoutAndRender()
{
if (Renderer.Settings.Staves.Count == 0)
{
return;
}
var score = Renderer.Score;
var canvas = Renderer.Canvas;
var startIndex = Renderer.Settings.Layout.Get("start", 1);
startIndex--; // map to array index
startIndex = Math.Min(score.MasterBars.Count - 1, Math.Max(0, startIndex));
var currentBarIndex = startIndex;
var endBarIndex = Renderer.Settings.Layout.Get("count", score.MasterBars.Count);
endBarIndex = startIndex + endBarIndex - 1; // map count to array index
endBarIndex = Math.Min(score.MasterBars.Count - 1, Math.Max(0, endBarIndex));
var x = PagePadding[0];
var y = PagePadding[1];
_group = CreateEmptyStaveGroup();
while (currentBarIndex <= endBarIndex)
{
_group.AddBars(Renderer.Tracks, currentBarIndex);
currentBarIndex++;
}
_group.X = x;
_group.Y = y;
_group.FinalizeGroup(this);
y += _group.Height + (GroupSpacing * Scale);
Height = y + PagePadding[3];
Width = _group.X + _group.Width + PagePadding[2];
// TODO: Find a good way to render the score partwise
// we need to precalculate the final height somehow
canvas.BeginRender(Width, Height);
canvas.Color = Renderer.RenderingResources.MainGlyphColor;
canvas.TextAlign = TextAlign.Left;
_group.Paint(0, 0, Renderer.Canvas);
var result = canvas.EndRender();
OnPartialRenderFinished(new RenderFinishedEventArgs
{
TotalWidth = Width,
TotalHeight = y,
Width = Width,
Height = Height,
RenderResult = result
});
}
