public void PushLayer(GDILayerParameters layerParameters, GDILayer layer)
{
layerStack.AddFirst(layer);
paramStack.AddFirst(layerParameters);
float w = (float)Math.Round(layerParameters.ContentBounds.Width);
float h = (float)Math.Round(layerParameters.ContentBounds.Height);
Bitmap bitmap = new Bitmap((int)w, (int)h);
gdiGraph = layer.CreateGraphics(bitmap);
}
public GDILayer PushLayer(GDIGraphics g, ScDrawNode node)
{
ScLayer sclayer = node.layer;
GDILayer gdiLayer = new GDILayer(g);
GDILayerParameters layerParameters = new GDILayerParameters();
layerParameters.ContentBounds = sclayer.DrawBox;
layerParameters.MaskAntialiasMode = GDIAntialiasMode.PerPrimitive;
layerParameters.Opacity = sclayer.Opacity;
layerParameters.ClipRect = new RectangleF(
(int)(node.clipRect.X - sclayer.DrawBox.X - 1), (int)(node.clipRect.Y - sclayer.DrawBox.Y - 1),
(int)(node.clipRect.Width + 2), (int)(node.clipRect.Height + 2));
Matrix m = new Matrix();
m.Translate(-sclayer.DrawBox.X, -sclayer.DrawBox.Y);
m.Multiply(sclayer.GlobalMatrix);
node.m = m;
node.rootLayer = node.layer;
if (!sclayer.Parent.IsComputedStraight)
{
m = new Matrix();
m.Translate(-sclayer.Parent.DrawBox.X, -sclayer.Parent.DrawBox.Y);
m.Multiply(sclayer.GlobalMatrix);
layerParameters.GeometricMask = sclayer.CreateTransLastHitGeometryForGDI(m);
m.Dispose();
}
else
{
layerParameters.GeometricMask = sclayer.TransLastHitGraphicsPath;
layerParameters.parentClipRect = node.clipRect;
}
node.clipRect = layerParameters.ClipRect;
layerParameters.sclayer = sclayer;
g.PushLayer(layerParameters, gdiLayer);
return(gdiLayer);
}
public void PopLayer()
{
GDILayer layer = layerStack.First();
GDILayerParameters layerParameters = paramStack.First();
RectangleF parentContentBound;
RectangleF clipRect;
ScLayer sclayer = layerParameters.sclayer;
layerStack.RemoveFirst();
paramStack.RemoveFirst();
if (layerStack.Count > 0)
{
gdiGraph = layerStack.First().graph;
parentContentBound = paramStack.First().ContentBounds;
clipRect = paramStack.First().ClipRect;
}
else
{
gdiGraph = rootGdiGraph;
parentContentBound = new RectangleF(0, 0, w, h);
clipRect = layerParameters.parentClipRect;
}
float x = (float)Math.Round(layerParameters.ContentBounds.X - parentContentBound.X);
float y = (float)Math.Round(layerParameters.ContentBounds.Y - parentContentBound.Y);
Bitmap effectbmp = layer.bitmap;
//后处理效果
if (sclayer.UsePosttreatmentEffect)
{
effectbmp = sclayer.ScPostTreatmentEffectGDI(layer.bitmap);
}
//
TextureBrush br = new TextureBrush(effectbmp, WrapMode.Clamp);
br.TranslateTransform((int)x, (int)y);
switch (layerParameters.MaskAntialiasMode)
{
case GDIAntialiasMode.PerPrimitive:
gdiGraph.SmoothingMode = SmoothingMode.AntiAlias;
break;
case GDIAntialiasMode.Aliased:
gdiGraph.SmoothingMode = SmoothingMode.None;
break;
}
gdiGraph.Transform = new Matrix();
gdiGraph.SetClip(clipRect);
gdiGraph.FillPath(br, layerParameters.GeometricMask);
gdiGraph.ResetClip();
//后处理效果释放
if (sclayer.UsePosttreatmentEffect)
{
sclayer.ScReleasePostTreatmentEffectGDI(effectbmp);
}
br.Dispose();
}
