|
public static ScaleFont ( |
||
| initial | The font to scale. | |
| scale | double | Scale by this factor. |
| return | ||
/// <summary>
/// Draw The legend
/// </summary>
/// <param name="g">The graphics surface on which to draw</param>
/// <param name="position">The position of the top left of the axis.</param>
/// <param name="plots">Array of plot objects to appear in the legend.</param>
/// <param name="scale">if the legend is set to scale, the amount to scale by.</param>
/// <returns>bounding box</returns>
public Rectangle Draw(Graphics g, Point position, ArrayList plots, float scale)
{
// first of all determine the Font to use in the legend.
Font textFont;
if (this.AutoScaleText)
{
textFont = Utils.ScaleFont(this.font_, scale);
}
else
{
textFont = this.font_;
}
// determine max width and max height of label strings and
// count the labels.
int labelCount = 0;
int maxHt = 0;
int maxWd = 0;
int unnamedCount = 0;
for (int i = 0; i < plots.Count; ++i)
{
if (!(plots[i] is IPlot))
{
continue;
}
IPlot p = (IPlot)plots[i];
if (!p.ShowInLegend)
{
continue;
}
string label = p.Label;
if (label == "")
{
unnamedCount += 1;
label = "Series " + unnamedCount.ToString();
}
SizeF labelSize = g.MeasureString(label, textFont);
if (labelSize.Height > maxHt)
{
maxHt = (int)labelSize.Height;
}
if (labelSize.Width > maxWd)
{
maxWd = (int)labelSize.Width;
}
++labelCount;
}
bool extendingHorizontally = numberItemsHorizontally_ == -1;
bool extendingVertically = numberItemsVertically_ == -1;
// determine width in legend items count units.
int widthInItemCount = 0;
if (extendingVertically)
{
if (labelCount >= numberItemsHorizontally_)
{
widthInItemCount = numberItemsHorizontally_;
}
else
{
widthInItemCount = labelCount;
}
}
else if (extendingHorizontally)
{
widthInItemCount = labelCount / numberItemsVertically_;
if (labelCount % numberItemsVertically_ != 0)
{
widthInItemCount += 1;
}
}
else
{
throw new NPlotException("logic error in legend base");
}
// determine height of legend in items count units.
int heightInItemCount = 0;
if (extendingHorizontally)
{
if (labelCount >= numberItemsVertically_)
{
heightInItemCount = numberItemsVertically_;
}
else
{
heightInItemCount = labelCount;
}
}
else // extendingVertically
{
heightInItemCount = labelCount / numberItemsHorizontally_;
if (labelCount % numberItemsHorizontally_ != 0)
{
heightInItemCount += 1;
}
}
int lineLength = 20;
int hSpacing = (int)(5.0f * scale);
int vSpacing = (int)(3.0f * scale);
int boxWidth = (int)((float)widthInItemCount * (lineLength + maxWd + hSpacing * 2.0f) + hSpacing);
int boxHeight = (int)((float)heightInItemCount * (maxHt + vSpacing) + vSpacing);
int totalWidth = boxWidth;
int totalHeight = boxHeight;
// draw box around the legend.
if (this.BorderStyle == BorderType.Line)
{
g.FillRectangle(new SolidBrush(this.bgColor_), position.X, position.Y, boxWidth, boxHeight);
g.DrawRectangle(new Pen(this.borderColor_), position.X, position.Y, boxWidth, boxHeight);
}
else if (this.BorderStyle == BorderType.Shadow)
{
int offset = (int)(4.0f * scale);
g.FillRectangle(new SolidBrush(Color.FromArgb(128, Color.Gray)), position.X + offset, position.Y + offset, boxWidth, boxHeight);
g.FillRectangle(new SolidBrush(this.bgColor_), position.X, position.Y, boxWidth, boxHeight);
g.DrawRectangle(new Pen(this.borderColor_), position.X, position.Y, boxWidth, boxHeight);
totalWidth += offset;
totalHeight += offset;
}
/*
* else if ( this.BorderStyle == BorderType.Curved )
* {
* // TODO. make this nice.
* }
*/
else
{
// do nothing.
}
// now draw entries in box..
labelCount = 0;
unnamedCount = 0;
int plotCount = -1;
for (int i = 0; i < plots.Count; ++i)
{
if (!(plots[i] is IPlot))
{
continue;
}
IPlot p = (IPlot)plots[i];
if (!p.ShowInLegend)
{
continue;
}
plotCount += 1;
int xpos, ypos;
if (extendingVertically)
{
xpos = plotCount % numberItemsHorizontally_;
ypos = plotCount / numberItemsHorizontally_;
}
else
{
xpos = plotCount / numberItemsVertically_;
ypos = plotCount % numberItemsVertically_;
}
int lineXPos = (int)(position.X + hSpacing + xpos * (lineLength + maxWd + hSpacing * 2.0f));
int lineYPos = (int)(position.Y + vSpacing + ypos * (vSpacing + maxHt));
p.DrawInLegend(g, new Rectangle(lineXPos, lineYPos, lineLength, maxHt));
int textXPos = lineXPos + hSpacing + lineLength;
int textYPos = lineYPos;
string label = p.Label;
if (label == "")
{
unnamedCount += 1;
label = "Series " + unnamedCount.ToString();
}
g.DrawString(label, textFont,
new SolidBrush(this.textColor_), textXPos, textYPos);
++labelCount;
}
return(new Rectangle(position.X, position.Y, totalWidth, totalHeight));
}
private void DeterminePhysicalAxesToDraw(Rectangle bounds,
Axis xAxis1, Axis xAxis2, Axis yAxis1, Axis yAxis2,
out PhysicalAxis pXAxis1, out PhysicalAxis pXAxis2,
out PhysicalAxis pYAxis1, out PhysicalAxis pYAxis2)
{
System.Drawing.Rectangle cb = bounds;
pXAxis1 = new PhysicalAxis(xAxis1,
new Point(cb.Left, cb.Bottom), new Point(cb.Right, cb.Bottom));
pYAxis1 = new PhysicalAxis(yAxis1,
new Point(cb.Left, cb.Bottom), new Point(cb.Left, cb.Top));
pXAxis2 = new PhysicalAxis(xAxis2,
new Point(cb.Left, cb.Top), new Point(cb.Right, cb.Top));
pYAxis2 = new PhysicalAxis(yAxis2,
new Point(cb.Right, cb.Bottom), new Point(cb.Right, cb.Top));
int bottomIndent = padding_;
if (!pXAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis1.GetBoundingBox();
// finally determine its indentation from the bottom
bottomIndent = bottomIndent + bb.Bottom - cb.Bottom;
}
int leftIndent = padding_;
if (!pYAxis1.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis1.GetBoundingBox();
// finally determine its indentation from the left
leftIndent = leftIndent - bb.Left + cb.Left;
}
int topIndent = padding_;
float scale = DetermineScaleFactor(bounds.Width, bounds.Height);
int titleHeight;
if (AutoScaleTitle)
{
titleHeight = Utils.ScaleFont(titleFont_, scale).Height;
}
else
{
titleHeight = titleFont_.Height;
}
//count number of new lines in title.
int nlCount = 0;
for (int i = 0; i < title_.Length; ++i)
{
if (title_[i] == '\n')
{
nlCount += 1;
}
}
titleHeight = (int)(((float)nlCount * 0.75 + 1.0f) * (float)titleHeight);
if (!pXAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pXAxis2.GetBoundingBox();
topIndent = topIndent - bb.Top + cb.Top;
// finally determine its indentation from the top
// correct top indendation to take into account plot title
if (title_ != "")
{
topIndent += (int)(titleHeight * 1.3f);
}
}
int rightIndent = padding_;
if (!pYAxis2.Axis.Hidden)
{
// evaluate its bounding box
Rectangle bb = pYAxis2.GetBoundingBox();
// finally determine its indentation from the right
rightIndent = (int)(rightIndent + bb.Right - cb.Right);
}
// now we have all the default calculated positions and we can proceed to
// "move" the axes to their right places
// primary axes (bottom, left)
pXAxis1.PhysicalMin = new Point(cb.Left + leftIndent, cb.Bottom - bottomIndent);
pXAxis1.PhysicalMax = new Point(cb.Right - rightIndent, cb.Bottom - bottomIndent);
pYAxis1.PhysicalMin = new Point(cb.Left + leftIndent, cb.Bottom - bottomIndent);
pYAxis1.PhysicalMax = new Point(cb.Left + leftIndent, cb.Top + topIndent);
// secondary axes (top, right)
pXAxis2.PhysicalMin = new Point(cb.Left + leftIndent, cb.Top + topIndent);
pXAxis2.PhysicalMax = new Point(cb.Right - rightIndent, cb.Top + topIndent);
pYAxis2.PhysicalMin = new Point(cb.Right - rightIndent, cb.Bottom - bottomIndent);
pYAxis2.PhysicalMax = new Point(cb.Right - rightIndent, cb.Top + topIndent);
}
/// <summary>
/// Draw the the PlotSurface2D and all contents [axes, drawables, and legend] on the
/// supplied graphics surface.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="bounds">A bounding box on this surface that denotes the area on the
/// surface to confine drawing to.</param>
public void Draw(Graphics g, Rectangle bounds)
{
// determine font sizes and tick scale factor.
float scale = DetermineScaleFactor(bounds.Width, bounds.Height);
// if there is nothing to plot, return.
if (drawables_.Count == 0)
{
// draw title
float x_center = (bounds.Left + bounds.Right) / 2.0f;
float y_center = (bounds.Top + bounds.Bottom) / 2.0f;
Font scaled_font;
if (AutoScaleTitle)
{
scaled_font = Utils.ScaleFont(titleFont_, scale);
}
else
{
scaled_font = titleFont_;
}
g.DrawString(title_, scaled_font, titleBrush_, new PointF(x_center, y_center), titleDrawFormat_);
return;
}
// determine the [non physical] axes to draw based on the axis properties set.
Axis xAxis1 = null;
Axis xAxis2 = null;
Axis yAxis1 = null;
Axis yAxis2 = null;
DetermineAxesToDraw(out xAxis1, out xAxis2, out yAxis1, out yAxis2);
// apply scale factor to axes as desired.
if (xAxis1.AutoScaleTicks)
{
xAxis1.TickScale = scale;
}
if (xAxis1.AutoScaleText)
{
xAxis1.FontScale = scale;
}
if (yAxis1.AutoScaleTicks)
{
yAxis1.TickScale = scale;
}
if (yAxis1.AutoScaleText)
{
yAxis1.FontScale = scale;
}
if (xAxis2.AutoScaleTicks)
{
xAxis2.TickScale = scale;
}
if (xAxis2.AutoScaleText)
{
xAxis2.FontScale = scale;
}
if (yAxis2.AutoScaleTicks)
{
yAxis2.TickScale = scale;
}
if (yAxis2.AutoScaleText)
{
yAxis2.FontScale = scale;
}
// determine the default physical positioning of those axes.
PhysicalAxis pXAxis1 = null;
PhysicalAxis pYAxis1 = null;
PhysicalAxis pXAxis2 = null;
PhysicalAxis pYAxis2 = null;
DeterminePhysicalAxesToDraw(
bounds, xAxis1, xAxis2, yAxis1, yAxis2,
out pXAxis1, out pXAxis2, out pYAxis1, out pYAxis2);
float oldXAxis2Height = pXAxis2.PhysicalMin.Y;
// Apply axes constraints
for (int i = 0; i < axesConstraints_.Count; ++i)
{
((AxesConstraint)axesConstraints_[i]).ApplyConstraint(
pXAxis1, pYAxis1, pXAxis2, pYAxis2);
}
/////////////////////////////////////////////////////////////////////////
// draw legend if have one.
// Note: this will update axes if necessary.
Point legendPosition = new Point(0, 0);
if (legend_ != null)
{
legend_.UpdateAxesPositions(
pXAxis1, pYAxis1, pXAxis2, pYAxis2,
drawables_, scale, padding_, bounds,
out legendPosition);
}
float newXAxis2Height = pXAxis2.PhysicalMin.Y;
float titleExtraOffset = oldXAxis2Height - newXAxis2Height;
// now we are ready to define the bounding box for the plot area (to use in clipping
// operations.
plotAreaBoundingBoxCache_ = new Rectangle(
Math.Min(pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMax.X),
Math.Min(pYAxis1.PhysicalMax.Y, pYAxis1.PhysicalMin.Y),
Math.Abs(pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X + 1),
Math.Abs(pYAxis1.PhysicalMin.Y - pYAxis1.PhysicalMax.Y + 1)
);
bbXAxis1Cache_ = pXAxis1.GetBoundingBox();
bbXAxis2Cache_ = pXAxis2.GetBoundingBox();
bbYAxis1Cache_ = pYAxis1.GetBoundingBox();
bbYAxis2Cache_ = pYAxis2.GetBoundingBox();
// Fill in the background.
if (plotBackColor_ != null)
{
g.FillRectangle(
new System.Drawing.SolidBrush((Color)plotBackColor_),
(Rectangle)plotAreaBoundingBoxCache_);
}
else if (plotBackBrush_ != null)
{
g.FillRectangle(
plotBackBrush_.Get((Rectangle)plotAreaBoundingBoxCache_),
(Rectangle)plotAreaBoundingBoxCache_);
}
else if (plotBackImage_ != null)
{
g.DrawImage(
Utils.TiledImage(plotBackImage_, new Size(
((Rectangle)plotAreaBoundingBoxCache_).Width,
((Rectangle)plotAreaBoundingBoxCache_).Height)),
(Rectangle)plotAreaBoundingBoxCache_);
}
// draw title
float xt = (pXAxis2.PhysicalMax.X + pXAxis2.PhysicalMin.X) / 2.0f;
float yt = bounds.Top + padding_ - titleExtraOffset;
Font scaledFont;
if (AutoScaleTitle)
{
scaledFont = Utils.ScaleFont(titleFont_, scale);
}
else
{
scaledFont = titleFont_;
}
g.DrawString(title_, scaledFont, titleBrush_, new PointF(xt, yt), titleDrawFormat_);
//count number of new lines in title.
int nlCount = 0;
for (int i = 0; i < title_.Length; ++i)
{
if (title_[i] == '\n')
{
nlCount += 1;
}
}
SizeF s = g.MeasureString(title_, scaledFont);
bbTitleCache_ = new Rectangle((int)(xt - s.Width / 2), (int)(yt), (int)(s.Width), (int)(s.Height) * (nlCount + 1));
// draw drawables..
System.Drawing.Drawing2D.SmoothingMode smoothSave = g.SmoothingMode;
g.SmoothingMode = smoothingMode_;
bool legendDrawn = false;
for (int i_o = 0; i_o < ordering_.Count; ++i_o)
{
int i = (int)ordering_.GetByIndex(i_o);
double zOrder = (double)ordering_.GetKey(i_o);
if (zOrder > legendZOrder_)
{
// draw legend.
if (!legendDrawn && legend_ != null)
{
legend_.Draw(g, legendPosition, drawables_, scale);
legendDrawn = true;
}
}
IDrawable drawable = (IDrawable)drawables_[i];
XAxisPosition xap = (XAxisPosition)xAxisPositions_[i];
YAxisPosition yap = (YAxisPosition)yAxisPositions_[i];
PhysicalAxis drawXAxis;
PhysicalAxis drawYAxis;
if (xap == XAxisPosition.Bottom)
{
drawXAxis = pXAxis1;
}
else
{
drawXAxis = pXAxis2;
}
if (yap == YAxisPosition.Left)
{
drawYAxis = pYAxis1;
}
else
{
drawYAxis = pYAxis2;
}
// set the clipping region.. (necessary for zoom)
g.Clip = new Region((Rectangle)plotAreaBoundingBoxCache_);
// plot.
drawable.Draw(g, drawXAxis, drawYAxis);
// reset it..
g.ResetClip();
}
if (!legendDrawn && legend_ != null)
{
legend_.Draw(g, legendPosition, drawables_, scale);
}
// cache the physical axes we used on this draw;
pXAxis1Cache_ = pXAxis1;
pYAxis1Cache_ = pYAxis1;
pXAxis2Cache_ = pXAxis2;
pYAxis2Cache_ = pYAxis2;
g.SmoothingMode = smoothSave;
// now draw axes.
Rectangle axisBounds;
pXAxis1.Draw(g, out axisBounds);
pXAxis2.Draw(g, out axisBounds);
pYAxis1.Draw(g, out axisBounds);
pYAxis2.Draw(g, out axisBounds);
#if DEBUG_BOUNDING_BOXES
g.DrawRectangle(new Pen(Color.Orange), (Rectangle)bbXAxis1Cache_);
g.DrawRectangle(new Pen(Color.Orange), (Rectangle)bbXAxis2Cache_);
g.DrawRectangle(new Pen(Color.Orange), (Rectangle)bbYAxis1Cache_);
g.DrawRectangle(new Pen(Color.Orange), (Rectangle)bbYAxis2Cache_);
g.DrawRectangle(new Pen(Color.Red, 5.0F), (Rectangle)plotAreaBoundingBoxCache_);
//if(this.ShowLegend)g.DrawRectangle( new Pen(Color.Chocolate, 3.0F), (Rectangle) bbLegendCache_);
g.DrawRectangle(new Pen(Color.DeepPink, 2.0F), (Rectangle)bbTitleCache_);
#endif
}
/// <summary>
/// Draw the the PlotSurface2D and all contents [axes, drawables] on the
/// supplied graphics surface.
/// </summary>
/// <param name="g">The graphics surface on which to draw.</param>
/// <param name="bounds">A bounding box on this surface that denotes the area on the
/// surface to confine drawing to.</param>
public void Draw(Graphics g, Rectangle bounds)
{
// determine font sizes and tick scale factor.
float scale = DetermineScaleFactor(bounds.Width, bounds.Height);
// if there is nothing to plot, return.
if (m_drawables.Count == 0)
{
// draw title
float x_center = (bounds.Left + bounds.Right) / 2.0f;
float y_center = (bounds.Top + bounds.Bottom) / 2.0f;
Font scaled_font;
if (AutoScaleTitle)
{
scaled_font = Utils.ScaleFont(m_titleFont, scale);
}
else
{
scaled_font = m_titleFont;
}
g.DrawString(m_title, scaled_font, this.m_titleBrush, new PointF(x_center, y_center), m_titleDrawFormat);
return;
}
Stopwatch sw = StepTimer.Start("Determine Axis");
// determine the [non physical] axes to draw based on the axis properties set.
Axis xAxis1, xAxis2, yAxis1, yAxis2;
DetermineAxesToDraw(out xAxis1, out xAxis2, out yAxis1, out yAxis2);
// apply scale factor to axes as desired.
if (xAxis1.AutoScaleTicks)
{
xAxis1.TickScale = scale;
}
if (xAxis1.AutoScaleText)
{
xAxis1.FontScale = scale;
}
if (yAxis1.AutoScaleTicks)
{
yAxis1.TickScale = scale;
}
if (yAxis1.AutoScaleText)
{
yAxis1.FontScale = scale;
}
if (xAxis2.AutoScaleTicks)
{
xAxis2.TickScale = scale;
}
if (xAxis2.AutoScaleText)
{
xAxis2.FontScale = scale;
}
if (yAxis2.AutoScaleTicks)
{
yAxis2.TickScale = scale;
}
if (yAxis2.AutoScaleText)
{
yAxis2.FontScale = scale;
}
// determine the default physical positioning of those axes.
PhysicalAxis pXAxis1, pYAxis1, pXAxis2, pYAxis2;
DeterminePhysicalAxesToDraw(bounds, xAxis1, xAxis2, yAxis1, yAxis2, out pXAxis1, out pXAxis2, out pYAxis1, out pYAxis2);
StepTimer.Stop(sw);
float oldXAxis2Height = pXAxis2.PhysicalMin.Y;
// Apply axes constraints
for (int i = 0; i < m_axesConstraints.Count; ++i)
{
(m_axesConstraints[i]).ApplyConstraint(pXAxis1, pYAxis1, pXAxis2, pYAxis2);
}
float newXAxis2Height = pXAxis2.PhysicalMin.Y;
float titleExtraOffset = oldXAxis2Height - newXAxis2Height;
sw = StepTimer.Start("Draw Axis");
// now we are ready to define the bounding box for the plot area (to use in clipping
// operations.
m_plotAreaBoundingBoxCache = new Rectangle(
Math.Min(pXAxis1.PhysicalMin.X, pXAxis1.PhysicalMax.X),
Math.Min(pYAxis1.PhysicalMax.Y, pYAxis1.PhysicalMin.Y),
Math.Abs(pXAxis1.PhysicalMax.X - pXAxis1.PhysicalMin.X + 1),
Math.Abs(pYAxis1.PhysicalMin.Y - pYAxis1.PhysicalMax.Y + 1)
);
m_bbXAxis1Cache = pXAxis1.GetBoundingBox();
m_bbXAxis2Cache = pXAxis2.GetBoundingBox();
m_bbYAxis1Cache = pYAxis1.GetBoundingBox();
m_bbYAxis2Cache = pYAxis2.GetBoundingBox();
// Fill in the background.
g.FillRectangle(new SolidBrush(m_plotBackColor), m_plotAreaBoundingBoxCache);
// draw title
float xt = (pXAxis2.PhysicalMax.X + pXAxis2.PhysicalMin.X) / 2.0f;
float yt = bounds.Top + m_padding - titleExtraOffset;
Font scaledFont;
if (AutoScaleTitle)
{
scaledFont = Utils.ScaleFont(m_titleFont, scale);
}
else
{
scaledFont = m_titleFont;
}
g.DrawString(m_title, scaledFont, m_titleBrush, new PointF(xt, yt), m_titleDrawFormat);
//count number of new lines in title.
int nlCount = 0;
for (int i = 0; i < m_title.Length; ++i)
{
if (m_title[i] == '\n')
{
nlCount += 1;
}
}
SizeF s = g.MeasureString(m_title, scaledFont);
m_bbTitleCache = new Rectangle((int)(xt - s.Width / 2), (int)(yt), (int)(s.Width), (int)(s.Height) * (nlCount + 1));
StepTimer.Stop(sw);
//sw = StepTimer.Start("Draw IDrawables");
// draw drawables..
SmoothingMode smoothSave = g.SmoothingMode;
g.SmoothingMode = m_smoothingMode;
for (int i_o = 0; i_o < m_ordering.Count; ++i_o)
{
int i = m_ordering.Values[i_o];
IDrawable drawable = m_drawables[i];
PhysicalAxis drawXAxis;
PhysicalAxis drawYAxis;
drawXAxis = pXAxis1;
drawYAxis = pYAxis1;
// set the clipping region.. (necessary for zoom)
g.Clip = new Region(m_plotAreaBoundingBoxCache);
// plot.
drawable.Draw(g, drawXAxis, drawYAxis);
// reset it..
g.ResetClip();
}
//StepTimer.Stop(sw);
// cache the physical axes we used on this draw;
m_pXAxis1Cache = pXAxis1;
m_pYAxis1Cache = pYAxis1;
m_pXAxis2Cache = pXAxis2;
m_pYAxis2Cache = pYAxis2;
g.SmoothingMode = smoothSave;
sw = StepTimer.Start("Draw Axis Final");
// now draw axes.
Rectangle axisBounds;
pXAxis1.Draw(g, out axisBounds);
pXAxis2.Draw(g, out axisBounds);
pYAxis1.Draw(g, out axisBounds);
pYAxis2.Draw(g, out axisBounds);
StepTimer.Stop(sw);
}