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public DrawTrackTicksGlyph ( |
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| context | Render context. | |
| state | PaletteState | Element state. |
| elementPalette | IPaletteElementColor | Source of palette colors. |
| drawRect | Drawing rectangle that should contain ticks. | |
| orientation | Orientation | Orientation of the drawing area. |
| topRight | bool | Drawing on the topRight or the bottomLeft. |
| positionSize | Size of the position indicator. | |
| minimum | int | First value. |
| maximum | int | Last value. |
| frequency | int | How often ticks are drawn. |
| return | void | |
public override void DrawTrackTicksGlyph(RenderContext context,
PaletteState state,
IPaletteElementColor elementPalette,
Rectangle drawRect,
Orientation orientation,
bool topRight,
Size positionSize,
int minimum,
int maximum,
int frequency)
{
// Never want a frequency less than 1
if (frequency <= 0)
frequency = 1;
float range = maximum - minimum;
using (Pen tickPen = new Pen(elementPalette.GetElementColor1(state)))
{
if (orientation == Orientation.Horizontal)
{
// Reduce area by half the position indicator on each side
int halfPosition = positionSize.Width / 2;
drawRect.X += halfPosition;
drawRect.Width -= positionSize.Width;
// Draw a marker for each value between min and max
float factor = (range == 0) ? float.MinValue : (float)drawRect.Width / range;
float top = drawRect.Y + 1;
float bottom = drawRect.Bottom - 2;
for (int i = minimum, y = 0; i <= maximum; i += frequency, y += frequency)
{
float offset = drawRect.X + (factor * y);
if (!topRight)
{
top = drawRect.Y + 2;
bottom = drawRect.Bottom - 2;
if ((i == minimum) || (i == maximum))
top -= 1;
}
else
{
top = drawRect.Y + 1;
bottom = drawRect.Bottom - 3;
if ((i == minimum) || (i == maximum))
bottom += 1;
}
context.Graphics.DrawLine(tickPen, offset, top, offset, bottom);
}
}
else
{
// Reduce area by half the position indicator on each side
int halfPosition = positionSize.Height / 2;
drawRect.Y += halfPosition;
drawRect.Height -= positionSize.Height;
// Draw a marker for each value between min and max
float factor = (range == 0) ? float.MinValue : (float)drawRect.Height / range;
float left = drawRect.X + 1;
float right = drawRect.Right - 2;
for (int i = minimum, y = 0; i <= maximum; i += frequency, y += frequency)
{
float offset = drawRect.Y + (factor * y);
if (topRight)
{
left = drawRect.X + 2;
right = drawRect.Right - 2;
if ((i == minimum) || (i == maximum))
left -= 1;
}
else
{
left = drawRect.X + 1;
right = drawRect.Right - 3;
if ((i == minimum) || (i == maximum))
right += 1;
}
context.Graphics.DrawLine(tickPen, left, offset, right, offset);
}
}
}
}