private void btnPal_Click(object sender, EventArgs e)
{
SwatchPick dlg = new SwatchPick();
dlg.StartPosition = FormStartPosition.CenterParent;
dlg.SwatchIndex = _paletteIndex;
DialogResult res = dlg.ShowDialog(this);
if (res == DialogResult.Cancel)
{
return;
}
_paletteIndex = dlg.SwatchIndex;
drawer.Palette = _paletteIndex;
DoAncTree(); // TODO the 'control' should redraw itself
}
private void DrawAncCirc(Graphics gr)
{
Color[] genColors = SwatchPick.Swatch(Palette);
// 16-31
// 8-15
// 4-7
// 2-3
// 1
for (int gen = 4; gen >= 0; gen--)
{
int dataOffset = 1 << gen;
int segmentCount = 1 << gen;
int left = OUTER_MARGIN + (4 - gen) * RADIUS_STEP;
int top = left;
int wide = (gen + 1) * RADIUS_STEP * 2;
int high = wide;
Rectangle rect = new Rectangle(left, top, wide, high);
float fDegAngle = 360.0f / segmentCount;
float fDegStart = 0.0f;
using (Pen pen = new Pen(Color.Black))
using (Brush brush = new SolidBrush(genColors[gen]))
if (gen == 0)
{
gr.FillEllipse(brush, rect);
gr.DrawEllipse(pen, rect);
drawText(gr, 1, 0, 0, RADIUS_STEP);
}
else
{
for (int i = 0; i < segmentCount; i++)
{
if (AncData[dataOffset + i] != null)
{
gr.FillPie(brush, rect, fDegStart, fDegAngle);
gr.DrawPie(pen, rect, fDegStart, fDegAngle);
drawText(gr, dataOffset + i, fDegStart, fDegAngle, gen * RADIUS_STEP);
}
fDegStart += fDegAngle;
}
}
}
}