protected virtual void DrawChart(ChartPaintEventArgs e)
{
e.Graphics.Clear(ChartBackColor);
DrawLabels(e);
foreach (ChartLayer layer in Layers)
{
layer.Draw(e);
}
}
protected void DrawLabels(ChartPaintEventArgs e)
{
foreach (ChartLabel cl in this.Labels)
{
if (cl != null)
{
DrawLable(cl, e);
}
}
}
public void CopyTo(ChartPaintEventArgs e)
{
e.BackBrush = this.BackBrush;
e.ForeBrush = this.ForeBrush;
e.Font = this.Font;
}
void ChartBox_Paint(object sender, PaintEventArgs e)
{
Point pt = Point.Empty;
if (HorizontalScroll.Enabled)
{
pt.X = HorizontalScroll.Value;
}
if (VerticalScroll.Enabled)
{
pt.Y = VerticalScroll.Value;
}
if (Zoom != 1 && Zoom > 0)
{
pt.X = (int)Math.Round(pt.X / Zoom);
pt.Y = (int)Math.Round(pt.Y / Zoom);
}
if (ChartBox.Margin.Left != 0)
{
pt.X -= ChartBox.Margin.Left;
}
if (ChartBox.Margin.Top != 0)
{
pt.Y -= ChartBox.Margin.Top;
}
if (!CustomDoubleBuffer || BmpBuffer == null)
{
ChartPaintEventArgs cpe;
if (CustomDoubleBuffer)
{
BmpBuffer = new Bitmap(ChartBox.Width, ChartBox.Height);
Graphics grf = Graphics.FromImage(BmpBuffer);
cpe = new ChartPaintEventArgs(grf, ChartBox.ClientRectangle);
}
else
{
cpe = new ChartPaintEventArgs(e);
}
cpe.LogicViewPort = ChartBox.ClientRectangle;
cpe.BackBrush = new SolidBrush(ChartBackColor);
cpe.ForeBrush = new SolidBrush(ChartForeColor);
cpe.Font = ChartBox.DefaultChartFont;
if (Zoom != 1.0f)
{
cpe.Graphics.ScaleTransform(Zoom, Zoom);
}
if (HighQualityRender)
{
PaintHelper.SetHighQualityRender(cpe.Graphics);
}
if (!pt.IsEmpty)
{
cpe.Graphics.TranslateTransform(-pt.X, -pt.Y);
Rectangle rect = cpe.LogicViewPort;
rect.Offset(pt.X, pt.Y);
cpe.LogicViewPort = rect;
}
// Draw Chart
DrawChart(cpe);
if (CustomDoubleBuffer)
{
cpe.Graphics.Dispose();
}
}
if (CustomDoubleBuffer && BmpBuffer != null)
{
e.Graphics.DrawImage(BmpBuffer,
new Rectangle(0, 0, ChartBox.Width, ChartBox.Height),
0, 0, BmpBuffer.Width, BmpBuffer.Height, GraphicsUnit.Pixel);
}
if (CustomDoubleBuffer)
{
//e.Graphics.TranslateTransform(-pt.X, -pt.Y);
//e.Graphics.ScaleTransform(Zoom, Zoom);
PaintHelper.SetHighQualityRender(e.Graphics);
}
foreach (ChartLayer layer in Layers)
{
layer.DrawRealTime(e);
}
OnAfterPaint(e);
}
