protected override void OnPaint(PaintEventArgs e)
{
if (!Visible)
{
return; // || (m_minValue == m_maxValue)) return;
}
base.OnPaint(e);
// draw border
Brush br = new SolidBrush(ForeColor);
Rectangle drawSpace = ClientRectangle;
Pen pen = new Pen(br);
// draw labels
drawSpace.Location = new Point(Padding.Left, Padding.Top);
drawSpace.Width = ClientRectangle.Width - Padding.Horizontal;
drawSpace.Height = ClientRectangle.Height - Padding.Vertical;
string format = String.Format("g{0}", m_precision);
SizeF labsize = e.Graphics.MeasureString(String.Format(".-e08" + new String('0', m_precision)), Font);
int tickCount;
if (m_orientation == TextOrientation.Vertical)
{
tickCount = (int)Math.Floor((double)(drawSpace.Height - labsize.Height) / (labsize.Height + m_tickLabelsPadding));
}
else
{
tickCount = (int)Math.Floor((double)(drawSpace.Width - labsize.Width) / (labsize.Width + m_tickLabelsPadding));
}
List <float> labels =
Collections.ILTickCollection.NiceLabels(m_minValue, m_maxValue, tickCount, TickLabelRenderingHint.Auto);
tickCount = labels.Count;
// draw labels
RectangleF dR; List <int> tickPositions = new List <int>(tickCount);
if (m_orientation == TextOrientation.Vertical)
{
dR = new RectangleF(drawSpace.Left, drawSpace.Top + drawSpace.Height - labsize.Height, labsize.Width, labsize.Height);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Near;
// draw all values in between
float offsY = drawSpace.Top + drawSpace.Height;
float mult = (drawSpace.Height) / (m_maxValue - m_minValue);
foreach (float curVal in labels)
{
// translate into screen coords
dR.Y = (int)(offsY - (curVal - m_minValue) * mult);
tickPositions.Add((int)dR.Y);
dR.Y -= (labsize.Height / 2);
e.Graphics.DrawString(curVal.ToString(format), Font, br, dR, sf);
}
// prepare remaining space for gradient scale
drawSpace.X += (int)(labsize.Width + 2 * m_tickLabelsPadding);
drawSpace.Width -= (int)(labsize.Width + 2 * m_tickLabelsPadding);
}
else
{
// draw labels above gradient scale
dR = new RectangleF(drawSpace.Left, drawSpace.Top, labsize.Width, labsize.Height);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Near;
e.Graphics.DrawString(m_minValue.ToString(format), Font, br, dR, sf);
tickPositions.Add(drawSpace.Left);
// draw maximum
sf.Alignment = StringAlignment.Far;
dR.X = drawSpace.Left + drawSpace.Width - labsize.Width;
e.Graphics.DrawString(m_maxValue.ToString(format), Font, br, dR, sf);
tickPositions.Add(drawSpace.Left + drawSpace.Width);
sf.Alignment = StringAlignment.Center;
// draw all values in between
float mult = (drawSpace.Width) / (m_maxValue - m_minValue);
foreach (float curVal in labels) // = ls; curVal <= m_maxValue - m/2; curVal = (float) (curVal + m)) {
// translate into screen coords
{
dR.X = (int)((curVal - m_minValue) * mult);
if (dR.X < drawSpace.Left + labsize.Width)
{
continue;
}
if (dR.X > drawSpace.Left + drawSpace.Width - labsize.Width)
{
continue;
}
tickPositions.Add((int)dR.X);
dR.X -= (labsize.Width / 2);
e.Graphics.DrawString(curVal.ToString(format), Font, br, dR, sf);
}
// prep. rem. space for gradient scale
drawSpace.Y += (int)(labsize.Height + 2 * m_tickLabelsPadding);
drawSpace.Height -= (int)(labsize.Height + 2 * m_tickLabelsPadding);
}
// draw color gradient: border (gray)
pen.Color = Color.FromArgb(180, 180, 180);
e.Graphics.DrawRectangle(pen, drawSpace);
drawSpace.X += 1; drawSpace.Y += 1;
drawSpace.Width -= 1; drawSpace.Height -= 1;
Internal.ILColorProvider hls = new Internal.ILColorProvider(0.0f, 0.5f, 1.0f);
if (m_orientation == TextOrientation.Vertical)
{
for (int i = drawSpace.Height; i-- > 0;)
{
pen.Color = m_colormap.Map((drawSpace.Height - i) / (double)drawSpace.Height * m_colormap.Length);
e.Graphics.DrawLine(pen, drawSpace.Left, drawSpace.Top + i, drawSpace.Left + drawSpace.Width, drawSpace.Top + i);
}
// draw tick bars
int le = drawSpace.Left, re = drawSpace.Left + drawSpace.Width, le2 = le + (re - le) / 4, re2 = re - (re - le) / 4;
pen.Color = ForeColor;
foreach (int y in tickPositions)
{
e.Graphics.DrawLine(pen, le, y, le2, y);
e.Graphics.DrawLine(pen, re2, y, re, y);
}
}
else
{
for (int i = drawSpace.Width; i-- > 0;)
{
pen.Color = m_colormap.Map(i / (double)drawSpace.Width * m_colormap.Length);
e.Graphics.DrawLine(pen, drawSpace.Left + i, drawSpace.Top, drawSpace.Left + i, drawSpace.Top + drawSpace.Height);
}
// draw tick bars
int up = drawSpace.Top, bot = drawSpace.Top + drawSpace.Height, up2 = up + (bot - up) / 4, bot2 = bot - (bot - up) / 4;
pen.Color = ForeColor;
foreach (int x in tickPositions)
{
e.Graphics.DrawLine(pen, x, up, x, up2);
e.Graphics.DrawLine(pen, x, bot2, x, bot);
}
}
}
protected override void OnPaint(PaintEventArgs e) {
if (!Visible) return; // || (m_minValue == m_maxValue)) return;
base.OnPaint(e);
// draw border
Brush br = new SolidBrush(ForeColor) ;
Rectangle drawSpace = ClientRectangle;
Pen pen = new Pen(br);
// draw labels
drawSpace.Location = new Point (Padding.Left,Padding.Top);
drawSpace.Width = ClientRectangle.Width - Padding.Horizontal;
drawSpace.Height = ClientRectangle.Height- Padding.Vertical;
string format = String.Format("g{0}",m_precision);
SizeF labsize = e.Graphics.MeasureString(String.Format(".-e08" + new String('0',m_precision)),Font);
int tickCount;
if (m_orientation == TextOrientation.Vertical) {
tickCount = (int)Math.Floor((double)(drawSpace.Height - labsize.Height) / (labsize.Height + m_tickLabelsPadding));
} else {
tickCount = (int)Math.Floor((double)(drawSpace.Width - labsize.Width) / (labsize.Width + m_tickLabelsPadding));
}
List<float> labels =
Collections.ILTickCollection.NiceLabels(m_minValue,m_maxValue,tickCount,TickLabelRenderingHint.Auto);
tickCount = labels.Count;
// draw labels
RectangleF dR; List<int> tickPositions = new List<int>(tickCount);
if (m_orientation == TextOrientation.Vertical) {
dR = new RectangleF(drawSpace.Left,drawSpace.Top + drawSpace.Height - labsize.Height, labsize.Width,labsize.Height);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Far;
sf.LineAlignment = StringAlignment.Near;
// draw all values in between
float offsY = drawSpace.Top + drawSpace.Height;
float mult = (drawSpace.Height) / (m_maxValue - m_minValue);
foreach (float curVal in labels) {
// translate into screen coords
dR.Y = (int)(offsY - (curVal - m_minValue) * mult);
tickPositions.Add((int)dR.Y);
dR.Y -= (labsize.Height/2);
e.Graphics.DrawString(curVal.ToString(format),Font,br,dR,sf);
}
// prepare remaining space for gradient scale
drawSpace.X += (int)(labsize.Width + 2 * m_tickLabelsPadding);
drawSpace.Width -= (int)(labsize.Width + 2 * m_tickLabelsPadding);
} else {
// draw labels above gradient scale
dR = new RectangleF(drawSpace.Left,drawSpace.Top,labsize.Width,labsize.Height);
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Near;
e.Graphics.DrawString(m_minValue.ToString(format),Font,br,dR,sf);
tickPositions.Add(drawSpace.Left);
// draw maximum
sf.Alignment = StringAlignment.Far;
dR.X = drawSpace.Left + drawSpace.Width - labsize.Width;
e.Graphics.DrawString(m_maxValue.ToString(format),Font,br,dR,sf);
tickPositions.Add(drawSpace.Left + drawSpace.Width);
sf.Alignment = StringAlignment.Center;
// draw all values in between
float mult = (drawSpace.Width) / (m_maxValue - m_minValue);
foreach (float curVal in labels) { // = ls; curVal <= m_maxValue - m/2; curVal = (float) (curVal + m)) {
// translate into screen coords
dR.X = (int)((curVal - m_minValue) * mult);
if (dR.X < drawSpace.Left + labsize.Width) continue;
if (dR.X > drawSpace.Left + drawSpace.Width - labsize.Width) continue;
tickPositions.Add((int)dR.X);
dR.X -= (labsize.Width/2);
e.Graphics.DrawString(curVal.ToString(format),Font,br,dR,sf);
}
// prep. rem. space for gradient scale
drawSpace.Y += (int)(labsize.Height + 2 * m_tickLabelsPadding);
drawSpace.Height -= (int)(labsize.Height + 2 * m_tickLabelsPadding);
}
// draw color gradient: border (gray)
pen.Color = Color.FromArgb(180,180,180);
e.Graphics.DrawRectangle(pen,drawSpace);
drawSpace.X += 1; drawSpace.Y += 1;
drawSpace.Width -= 1; drawSpace.Height -= 1;
Internal.ILColorProvider hls = new Internal.ILColorProvider(0.0f,0.5f,1.0f);
if (m_orientation == TextOrientation.Vertical) {
for (int i = drawSpace.Height; i -->0;) {
pen.Color = m_colormap.Map((drawSpace.Height - i) / (double)drawSpace.Height * m_colormap.Length);
e.Graphics.DrawLine(pen,drawSpace.Left, drawSpace.Top+i, drawSpace.Left + drawSpace.Width,drawSpace.Top + i);
}
// draw tick bars
int le = drawSpace.Left, re = drawSpace.Left + drawSpace.Width, le2 = le + (re - le) / 4, re2 = re - (re - le) / 4;
pen.Color = ForeColor;
foreach (int y in tickPositions) {
e.Graphics.DrawLine(pen,le,y,le2,y);
e.Graphics.DrawLine(pen,re2,y,re,y);
}
} else {
for (int i = drawSpace.Width; i -->0;) {
pen.Color = m_colormap.Map(i / (double)drawSpace.Width * m_colormap.Length);
e.Graphics.DrawLine(pen,drawSpace.Left+i, drawSpace.Top, drawSpace.Left + i,drawSpace.Top + drawSpace.Height);
}
// draw tick bars
int up = drawSpace.Top, bot = drawSpace.Top + drawSpace.Height, up2 = up + (bot - up) / 4, bot2 = bot - (bot - up) / 4;
pen.Color = ForeColor;
foreach (int x in tickPositions) {
e.Graphics.DrawLine(pen,x,up,x,up2);
e.Graphics.DrawLine(pen,x,bot2,x,bot);
}
}
}
