/// <summary>
/// Draws preview on the charts tab
/// </summary>
private void DrawChartsPreview()
{
Rectangle rect = pctCharts.ClientRectangle;
Bitmap bmp = new Bitmap(rect.Width, rect.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
if (_shapefile.Charts.Count > 0 && _shapefile.Charts.NumFields > 0)
{
Graphics g = Graphics.FromImage(bmp);
IntPtr ptr = g.GetHdc();
int width = rect.Width;
int height = rect.Height;
MapWinGIS.Charts charts = _shapefile.Charts;
if (charts.ChartType == MapWinGIS.tkChartType.chtPieChart)
{
charts.DrawChart(ptr.ToInt32(), (width - charts.IconWidth) / 2, (height - charts.IconHeight) / 2, false, Colors.ColorToUInteger(Color.White));
}
else
{
charts.DrawChart(ptr.ToInt32(), (width - charts.IconWidth) / 2, (height - charts.IconHeight) / 2, false, Colors.ColorToUInteger(Color.White));
}
g.ReleaseHdc(ptr);
}
pctCharts.Image = bmp;
}
/// <summary>
/// Performs drawing
/// </summary>
private void Draw()
{
int width = pictureBox1.ClientRectangle.Width;
int height = pictureBox1.ClientRectangle.Height;
Bitmap bmp = new Bitmap(width, height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
Graphics g = Graphics.FromImage(bmp);
IntPtr hdc = g.GetHdc();
uint backColor = Colors.ColorToUInteger(this.BackColor);
if (_charts.Visible)
{
if (_charts.ChartType == MapWinGIS.tkChartType.chtPieChart)
{
_charts.DrawChart(hdc, (width - _charts.IconWidth) / 2, (height - _charts.IconHeight) / 2, false, backColor);
}
else
{
_charts.DrawChart(hdc, (width - _charts.IconWidth) / 2, (height - _charts.IconHeight) / 2, false, backColor);
}
}
g.ReleaseHdc();
pictureBox1.Image = bmp;
}