/// <summary>
/// Renders this element and all its child elements.
/// </summary>
/// <param name="dc">The drawing context to use for rendering.</param>
protected override void RenderRecursive(DrawingContext dc)
{
if (_redirect)
{
dc = _displayModule._drawingContext;
base.RenderRecursive(dc);
int x, y, w, h;
dc.GetClippingRectangle(out x, out y, out w, out h);
_displayModule.Paint(dc.Bitmap, x, y, w, h);
}
else
{
base.RenderRecursive(dc);
}
}
private voiddelegate invalidate; // WORKAROUND
private void Instance_PostRender(DrawingContext dc)
{
// The below workaround handles the issue that the OLED screen driver API cannot handle partial screen updates
// WORKAROUND - when the clipping rectangle is not the full size, invalidate the whole window so we get called again with the full size
int x, y, width, height;
dc.GetClippingRectangle(out x, out y, out width, out height);
if (x != 0 || y != 0 || width != dc.Width || height != dc.Height)
{
//Debug.Print("Paint rectangle: x " + x + " y " + y + " w " + width + " h " + height);
if (invalidate == null) invalidate = new voiddelegate(WPFWindow.Invalidate); // WORKAROUND
Program.BeginInvoke(invalidate, null); // WORKAROUND
return; // WORKAROUND
}
Paint(dc.Bitmap);
}
public override void OnRender(DrawingContext dc)
{
if (_pushClippingRectangle)
{
try
{
dc.PushClippingRectangle(x0, y0, xDimension, yDimension);
}
catch (ArgumentException ex)
{
Log.Comment("Caught " + ex.Message + " when Pushing a clipping rectangle at (" + x0 + ", " + y0 + ")" +
" and Width = " + xDimension + " Height = " + yDimension);
_argumentException = true;
}
}
if (_popClippingRectangle)
{
dc.PopClippingRectangle();
}
if (_getClippingRectangle)
{
dc.GetClippingRectangle(out x1, out y1, out wd, out ht);
}
if (_drawLine)
{
dc.DrawLine(_pen, x0, y0, x1, y1);
}
if (_drawRectangle)
{
try
{
dc.DrawRectangle(_brush, _pen, r, s, xDimension, yDimension);
}
catch (ArgumentException ex)
{
Log.Comment("Caught " + ex.Message + " when drawing a Rectangle at (" + r + ", " + s + ")" +
" Width = " + xDimension + " Height = " + yDimension);
_argumentException = true;
}
}
if (_drawEllipse)
{
dc.DrawEllipse(_brush, _pen, r, s, xDimension, yDimension);
}
if (_drawPolygon)
{
dc.DrawPolygon(_brush, _pen, pts);
}
if (_clear)
{
dc.Clear();
}
if (_setPixel)
{
dc.SetPixel(_color, r, s);
}
if (_drawImage)
{
try
{
dc.DrawImage(bmp1, r, s);
}
catch (NullReferenceException ex)
{
Log.Comment("Caught " + ex.Message + " when drawing a null Image");
_nullReferenceException = true;
}
}
if (_drawCroppedImage)
{
try
{
dc.DrawImage(bmp1, r, s, x0, y0, xDimension, yDimension);
}
catch (ArgumentException ex)
{
Log.Comment("Caught " + ex.Message + " when drawing an Image at (" + r + ", " + s + ")" +
"from a source Image at(" + x0 + ", " + y0 + ") Width = " + xDimension + " Height = " + yDimension);
_argumentException = true;
}
catch (NullReferenceException ex)
{
Log.Comment("Caught " + ex.Message + " when drawing a null Image");
_nullReferenceException = true;
}
}
if (_translate)
{
dc.Translate(r, s);
}
if (_blendImage)
{
dc.BlendImage(bmp2, x0, y0, x1, y1, xDimension, yDimension, _opacity);
}
if (_drawText)
{
_textFits = dc.DrawText(ref _str, _font, _color, r, s, xDimension, yDimension, _alignment, _trimming);
}
base.OnRender(dc);
_pBitmap = dc.Bitmap;
Master_Media.autoEvent.Set();
}