protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (ArchiveMaintainer == null || ArchiveMaintainer.LoadingInitialData)
{
return;
}
// Do the same thing for everything here for consistency
DataTimeRange everything = CurrentArchiveRange;
if (MouseDragging == DragMode.New && e.X == MouseDragStart)
{
LongPoint virtualclicked = LongPoint.DeTranslateFromScreen(new LongPoint(e.Location), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle));
long proposedoffset = ArchiveMaintainer.GraphNow.Ticks - (virtualclicked.X + (GraphWidth.Ticks / 2));
GraphOffset = TimeSpan.FromTicks(proposedoffset > 0 ? proposedoffset : 0);
}
TimerScroll = ScrollMode.None;
Scroller.Stop();
AutoScaleGraph();
GridSpacing = BodgeSpacing(GraphWidth);
RefreshXRange(false);
MouseDragging = DragMode.None;
MouseResizing = ResizeMode.None;
}
/// <summary>
/// Virtual to Screen XY
/// </summary>
public static LongPoint TranslateToScreen(LongPoint virtualpoint, DataTimeRange xrange, DataRange yrange, LongRectangle rectangle)
{
if (xrange.Delta == 0 || yrange.Delta == 0)
{
// have seen this happen when we try to render graphs after the host failed to install a vm
// doesn't matter too much what we return as the VM entry is going to get removed. Just don't crash.
log.ErrorFormat("Tried to translate datapoint through range of zero. xrange.Delta: {0}, yrange.Delta: {1}",
xrange.Delta, yrange.Delta);
return(new LongPoint(0, 0));
}
// work out x, assume origin is bottom right
double x = rectangle.Right - ((rectangle.Width * (virtualpoint.X - xrange.Min)) / xrange.Delta);
// work out y
double y = rectangle.Bottom - ((rectangle.Height * (virtualpoint.Y - yrange.Min)) / yrange.Delta);
y = y > rectangle.Bottom ? rectangle.Bottom : y < rectangle.Y ? rectangle.Y : y;
if (x >= ARBITRARY_MICROSOFT_LINE_MAX_LENGTH && y >= ARBITRARY_MICROSOFT_LINE_MAX_LENGTH)
{
log.DebugFormat("Point translated to more than max line length: x={0} y={1} vx={2} vy={3} xrange_min={4} xrange_max={5} yrange_min={6} yrange_max={7} rectangle_x={8} rectangle_y={9} rectangle_w={10} rectangle_h={11}",
x, y,
virtualpoint.X, virtualpoint.Y,
xrange.Min, xrange.Max,
yrange.Min, yrange.Max,
rectangle.X, rectangle.Y,
rectangle.Width, rectangle.Height);
// draw a random line as this is better than crashing
return(new LongPoint(0, 0));
}
return(new LongPoint((long)x, (long)y));
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (ArchiveMaintainer == null || ArchiveMaintainer.LoadingInitialData)
{
return;
}
DataTimeRange everything = CurrentArchiveRange;
long selectedleft = LongPoint.TranslateToScreen(new LongPoint(GraphLeft.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
long selectedright = LongPoint.TranslateToScreen(new LongPoint(GraphRight.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
if (e.Location.X > selectedleft - 3 && e.Location.X < selectedleft + 3)
{
MouseResizing = ResizeMode.Left;
}
else if (e.Location.X > selectedright - 3 && e.Location.X < selectedright + 3)
{
MouseResizing = ResizeMode.Right;
}
else if (e.Location.X > selectedleft - 3 && e.Location.X < selectedright + 3)
{
MouseDragging = DragMode.Existing;
}
else
{
MouseDragStart = e.X;
MouseDragging = DragMode.New;
}
}
/// <summary>
/// Virtual to Screen XY
/// </summary>
public static LongPoint TranslateToScreen(LongPoint virtualpoint, DataTimeRange xrange, DataRange yrange, LongRectangle rectangle)
{
if (xrange.Delta == 0 || yrange.Delta == 0)
{
// have seen this happen when we try to render graphs after the host failed to install a vm
// doesn't matter too much what we return as the VM entry is going to get removed. Just don't crash.
log.ErrorFormat("Tried to translate datapoint through range of zero. xrange.Delta: {0}, yrange.Delta: {1}",
xrange.Delta, yrange.Delta);
return new LongPoint(0, 0);
}
// work out x, assume origin is bottom right
double x = rectangle.Right - ((rectangle.Width * (virtualpoint.X - xrange.Min)) / xrange.Delta);
// work out y
double y = rectangle.Bottom - ((rectangle.Height * (virtualpoint.Y - yrange.Min)) / yrange.Delta);
y = y > rectangle.Bottom ? rectangle.Bottom : y < rectangle.Y ? rectangle.Y : y;
if (x >= ARBITRARY_MICROSOFT_LINE_MAX_LENGTH && y >= ARBITRARY_MICROSOFT_LINE_MAX_LENGTH)
{
log.DebugFormat("Point translated to more than max line length: x={0} y={1} vx={2} vy={3} xrange_min={4} xrange_max={5} yrange_min={6} yrange_max={7} rectangle_x={8} rectangle_y={9} rectangle_w={10} rectangle_h={11}",
x, y,
virtualpoint.X, virtualpoint.Y,
xrange.Min, xrange.Max,
yrange.Min, yrange.Max,
rectangle.X, rectangle.Y,
rectangle.Width, rectangle.Height);
// draw a random line as this is better than crashing
return new LongPoint(0, 0);
}
return new LongPoint((long)x, (long)y);
}
public bool Contains(LongPoint p)
{
// draw a line horizontally right to infinity
// count the number of times a line crosses this line
// if odd return true
// if even return false
int crosses = 0;
int j = Points.Count - 1;
for (int i = 0; i < Points.Count; i++)
{
double x1 = Points[i].X;
double x2 = Points[j].X;
double y1 = Points[i].Y;
double y2 = Points[j].Y;
double x = (((x2 - x1) * (p.Y - y1)) / (y2 - y1)) + x1;
if (((y1 <= p.Y && p.Y < y2) || (y2 <= p.Y && p.Y < y1)) && p.X < x)
{
crosses++;
}
j = i;
}
return(crosses % 2 != 0);
}
public override void DrawToBuffer(DrawAxisArgs drawArgs)
{
var args = drawArgs as DrawAxisYArgs;
if (args == null)
{
return;
}
for (double i = args.Range.Min; i <= args.Range.Max; i += args.Range.Resolution)
{
// make sure that the last point is args.Range.Max
if (i + args.Range.Resolution > args.Range.Max)
{
i = args.Range.Max;
}
string label = args.Range.GetRelativeString(i);
LongPoint pt = LongPoint.TranslateToScreen(new LongPoint(0, (long)i), DataTimeRange.UnitRange, args.Range, new LongRectangle(args.Rectangle));
if (i != 0)
{
args.Graphics.DrawLine(Palette.GridPen, new Point(args.Rectangle.Right, (int)pt.Y), new Point(args.Rectangle.Left, (int)pt.Y));
}
if (!args.ShowLabels)
{
continue;
}
if (Labels == GridLabels.All)
{
SizeF labelsize = args.Graphics.MeasureString(label, Palette.LabelFont);
args.Graphics.DrawString(label, Palette.LabelFont, Palette.LabelBrush, new PointF(args.Rectangle.Right, i == args.Range.Min ? (int)pt.Y - labelsize.Height : i == args.Range.Max ? (int)pt.Y : (int)pt.Y - (labelsize.Height / 2)));
}
else if (Labels == GridLabels.MinMax)
{
if (i == args.Range.Min || i + args.Range.Resolution > args.Range.Max)
{
SizeF labelsize = args.Graphics.MeasureString(label, Palette.LabelFont);
args.Graphics.DrawString(label, Palette.LabelFont, Palette.LabelBrush, new PointF(args.Rectangle.Right, i == args.Range.Min ? (int)pt.Y - labelsize.Height : i == args.Range.Max ? (int)pt.Y : (int)pt.Y - (labelsize.Height / 2)));
}
// draw units
string unitString = args.Range.UnitString;
if (!string.IsNullOrEmpty(unitString))
{
SizeF unitssize = args.Graphics.MeasureString(unitString, Palette.LabelFont);
args.Graphics.DrawString(unitString,
Palette.LabelFont,
Palette.LabelBrush,
new PointF(args.Rectangle.Right, args.Rectangle.Top + (args.Rectangle.Height / 2) - (unitssize.Height / 2)));
}
}
}
}
public DataPoint OnMouseMove(MouseActionArgs args)
{
if (Deselected)
{
return(null);
}
LongPoint p = LongPoint.DeTranslateFromScreen(new LongPoint(args.Point), args.XRange, args.YRange, new LongRectangle(args.Rectangle));
return(ClosestPointTo(p));
}
/// <summary>
/// Screen XY to Virtual
/// </summary>
public static LongPoint DeTranslateFromScreen(LongPoint screenpoint, DataTimeRange xrange, DataRange yrange, LongRectangle rectangle)
{
// work out x, assume origin is bottom right
double x = xrange.Min + (xrange.Delta * (rectangle.Right - screenpoint.X)) / (double)rectangle.Width;
// work out y
double y = yrange.Min + (yrange.Delta * (rectangle.Bottom - screenpoint.Y)) / (double)rectangle.Height;
return(new LongPoint((long)x, (long)y));
}
public override void DrawToBuffer(DrawAxisArgs drawArgs)
{
var args = drawArgs as DrawAxisXArgs;
if (args == null)
{
return;
}
Dictionary <long, string> labels = new Dictionary <long, string>();
long last_i = long.MinValue;
for (long i = args.Range.Min - (args.Range.Min % -args.Range.Resolution); i >= args.Range.Max; i += args.Range.Resolution)
{
string label = args.Range.GetRelativeString(i + ArchiveMaintainer.ClientServerOffset.Ticks, ArchiveMaintainer.GraphNow);
if (last_i != long.MinValue && label == labels[last_i])
{
labels.Remove(last_i);
}
labels[i] = label;
last_i = i;
}
for (long i = args.Range.Min - (args.Range.Min % -args.Range.Resolution); i >= args.Range.Max; i += args.Range.Resolution)
{
LongPoint pt = LongPoint.TranslateToScreen(new LongPoint(i, 0), args.Range, DataRange.UnitRange, new LongRectangle(args.Rectangle));
if (i != 0)
{
args.Graphics.DrawLine(Palette.GridPen, new Point((int)pt.X, args.Rectangle.Bottom), new Point((int)pt.X, args.Rectangle.Top));
}
if (!args.ShowLabels)
{
continue;
}
if (!labels.ContainsKey(i))
{
continue;
}
string label = labels[i];
if (Labels == GridLabels.MinMax && (i == args.Range.Min - (args.Range.Min % -args.Range.Resolution) || i + args.Range.Resolution < args.Range.Max))
{
SizeF labelsize = args.Graphics.MeasureString(label, Palette.LabelFont);
args.Graphics.DrawString(label, Palette.LabelFont, Palette.LabelBrush, new PointF(i == args.Range.Min - (args.Range.Min % -args.Range.Resolution) ? (int)pt.X - labelsize.Width : (int)pt.X, args.Rectangle.Bottom));
}
else if (Labels == GridLabels.All)
{
SizeF labelsize = args.Graphics.MeasureString(label, Palette.LabelFont);
args.Graphics.DrawString(label, Palette.LabelFont, Palette.LabelBrush, new PointF(i == args.Range.Min ? (int)pt.X - labelsize.Width : i == args.Range.Max ? (int)pt.X : (int)pt.X - (labelsize.Width / 2), args.Rectangle.Bottom));
}
}
}
internal void OnEventsMouseClick(MouseActionArgs args)
{
foreach (DataEvent e in DataEvents)
{
LongPoint pt = LongPoint.TranslateToScreen(e.Point, args.XRange, args.YRange, new LongRectangle(args.Rectangle));
if (pt.X - 8 <= args.Point.X && args.Point.X <= pt.X + 8)
{
SelectedItem = e;
return;
}
}
SelectedItem = null;
}
public void RenderEvents(Graphics graphics, DataTimeRange xrange, Rectangle bounds, int spaceheight)
{
if (DataEvents == null)
{
return;
}
foreach (DataEvent vent in DataEvents)
{
if (vent.X < xrange.Max || vent.X > xrange.Min)
{
continue;
}
LongPoint loc = LongPoint.TranslateToScreen(vent.Point, xrange, DataRange.UnitRange, new LongRectangle(bounds));
vent.DrawToBuffer(graphics, loc.Point, bounds, spaceheight);
}
}
public bool OnMouseClick(MouseActionArgs args)
{
DataRange yrange = this.CustomYRange ?? args.YRange;
List <DataPoint> range = BinaryChop(Points, args.XRange);
if (range.Count == 0)
{
return(false);
}
List <LongPoint> polypoints = new List <LongPoint>();
foreach (DataPoint p in range)
{
LongPoint lp = LongPoint.TranslateToScreen(p.Point, args.XRange, yrange, new LongRectangle(args.Rectangle));
polypoints.Add(new LongPoint(lp.X, lp.Y + 10));
polypoints.Insert(0, new LongPoint(lp.X, lp.Y - 10));
}
Polygon poly = new Polygon(polypoints);
return(poly.Contains(new LongPoint(args.Point)));
}
private DataPoint ClosestPointTo(LongPoint p)
{
if (CurrentlyDisplayed.Count == 0 || CurrentlyDisplayed[CurrentlyDisplayed.Count - 1].X > p.X || CurrentlyDisplayed[0].X < p.X)
{
return(null);
}
for (int i = 1; i < CurrentlyDisplayed.Count; i++)
{
if (CurrentlyDisplayed[i - 1].X >= p.X && CurrentlyDisplayed[i].X < p.X)
{
if (p.X - CurrentlyDisplayed[i].X > (CurrentlyDisplayed[i - 1].X - CurrentlyDisplayed[i].X) / 2)
{
return(CurrentlyDisplayed[i - 1]);
}
else
{
return(CurrentlyDisplayed[i]);
}
}
}
return(null);
}
public override void DrawToBuffer(DrawAxisArgs drawArgs)
{
var args = drawArgs as DrawAxisNavArgs;
if (args == null)
{
return;
}
for (long i = args.Range.Min - (args.Range.Min % -args.Range.Resolution); i >= args.Range.Max; i += args.Range.Resolution)
{
string label = args.Range.GetRelativeString(i + ArchiveMaintainer.ClientServerOffset.Ticks, ArchiveMaintainer.GraphNow);
LongPoint pt = LongPoint.TranslateToScreen(new LongPoint(i, 0), args.Range, DataRange.UnitRange, new LongRectangle(args.Rectangle));
if (i != 0)
{
args.Graphics.DrawLine(Palette.GridPen, new Point((int)pt.X, args.Rectangle.Bottom), new Point((int)pt.X, args.Rectangle.Top));
}
if (args.ShowLabels && Labels == GridLabels.All)
{
args.Graphics.DrawString(label, Palette.LabelFont, Palette.LabelBrush, new PointF((int)pt.X, args.Rectangle.Top));
}
}
}
public bool Contains(LongPoint p)
{
// draw a line horizontally right to infinity
// count the number of times a line crosses this line
// if odd return true
// if even return false
int crosses = 0;
int j = Points.Count - 1;
for(int i = 0; i < Points.Count; i++)
{
double x1 = Points[i].X;
double x2 = Points[j].X;
double y1 = Points[i].Y;
double y2 = Points[j].Y;
double x = (((x2 - x1) * (p.Y - y1)) / (y2 - y1)) + x1;
if (((y1 <= p.Y && p.Y < y2) || (y2 <= p.Y && p.Y < y1)) && p.X < x)
crosses++;
j = i;
}
return crosses % 2 != 0;
}
private static void DoRender(Graphics g, Rectangle r, DataTimeRange xrange, DataRange yrange, Pen pen, Brush graphShadow, List <DataPoint> points, bool showselections)
{
if (points.Count == 0)
{
return;
}
// draw line 'tween points
LongPoint locbase = LongPoint.TranslateToScreen(points[0].Point, xrange, yrange, new LongRectangle(r));
List <Point> PointsToDraw = new List <Point>();
for (int i = 1; i < points.Count; i++)
{
LongPoint loc = LongPoint.TranslateToScreen(points[i].Point, xrange, yrange, new LongRectangle(r));
if (locbase.X == loc.X)
{
continue;
}
if (locbase.X > r.Right && loc.X < r.Left)
{
// trim it to the Y axis
double delta = (double)(locbase.Y - loc.Y) / (locbase.X - loc.X);
int dxl = r.Left - (int)locbase.X;
int dxr = r.Right - (int)loc.X;
int newyr = (int)(delta * dxr);
int newyl = (int)(delta * dxl);
PointsToDraw.Add(new Point(r.Right, newyr + (int)loc.Y));
PointsToDraw.Add(new Point(r.Left, newyl + (int)locbase.Y));
break;
}
else if (locbase.X > r.Right)
{
// trim it to the Y axis
double delta = (double)(locbase.Y - loc.Y) / (locbase.X - loc.X);
int dx = r.Right - (int)loc.X;
int newy = (int)(delta * dx);
PointsToDraw.Add(new Point(r.Right, newy + (int)loc.Y));
}
else if (loc.X < r.Left)
{
// trim it to the Y axis
double delta = (double)(locbase.Y - loc.Y) / (locbase.X - loc.X);
int dx = r.Left - (int)locbase.X;
int newy = (int)(delta * dx);
PointsToDraw.Add(locbase.Point);
PointsToDraw.Add(new Point(r.Left, newy + (int)locbase.Y));
break;
}
else
{
PointsToDraw.Add(locbase.Point);
if (i == points.Count - 1)
{
PointsToDraw.Add(loc.Point);
}
}
if (points[i].Show && showselections)
{
g.DrawRectangle(pen, new Rectangle((int)loc.X - 2, (int)loc.Y - 2, 4, 4));
}
locbase = loc;
}
if (PointsToDraw.Count <= 1)
{
return;
}
g.DrawLines(pen, PointsToDraw.ToArray());
if (graphShadow == null)
{
return;
}
PointsToDraw.Add(new Point(PointsToDraw[PointsToDraw.Count - 1].X, r.Bottom));
PointsToDraw.Add(new Point(PointsToDraw[0].X, r.Bottom));
g.FillPolygon(graphShadow, PointsToDraw.ToArray());
}
protected override void OnDrawToBuffer(PaintEventArgs paintEventArgs)
{
Program.AssertOnEventThread();
Rectangle rect = new Rectangle(ScrollViewRectangle.Left, ScrollViewRectangle.Top, ScrollViewRectangle.Width - 1, ScrollViewRectangle.Height - 1);
paintEventArgs.Graphics.FillRectangle(Palette.PaperBrush, ScrollViewRectangle);
paintEventArgs.Graphics.DrawRectangle(SystemPens.ActiveBorder, rect);
if (ArchiveMaintainer == null || Axis == null)
{
return;
}
if (ArchiveMaintainer.LoadingInitialData)
{
paintEventArgs.Graphics.DrawString(Messages.GRAPH_LOADING, Palette.LabelFont, Palette.LabelBrush, ScrollViewRectangle.Left + 10, ScrollViewRectangle.Top + 10);
return;
}
DataTimeRange everything = Animating ? AnimateTimeRange : CurrentArchiveRange;
RectangleF clip = paintEventArgs.Graphics.ClipBounds;
paintEventArgs.Graphics.SetClip(rect);
foreach (DataSet set in ScrollWideArchive.Sets.ToArray())
{
if (!set.Draw || !DisplayedUuids.Contains(set.Uuid))
{
continue;
}
List <DataPoint> todraw;
ArchiveInterval current = ScrollViewLeftArchiveInterval;
ArchiveInterval currentwidth = ScrollViewWidthArchiveInterval;
if (current == currentwidth)
{
todraw = new List <DataPoint>(set.Points);
if (current != ArchiveInterval.FiveSecond)
{
if (todraw.Count > 0 && todraw[0].X < ScrollViewRight.Ticks)
{
todraw.InsertRange(0, GetFinerPoints(
set,
new DataTimeRange(todraw[0].X, ScrollViewRight.Ticks, XRange.Resolution),
current));
}
}
}
else // currentwidth must be a higer resolution archive
{
int setindex = ArchiveMaintainer.Archives[currentwidth].Sets.IndexOf(set);
todraw = new List <DataPoint>(ArchiveMaintainer.Archives[currentwidth].Sets[setindex].Points);
if (todraw.Count > 0)
{
set.MergePointCollection(set.BinaryChop(set.Points, new DataTimeRange(ScrollViewLeft.Ticks, todraw[todraw.Count - 1].X, GraphResolution.Ticks)), todraw);
}
}
set.RefreshCustomY(everything, todraw);
if (set.CustomYRange.ScaleMode == RangeScaleMode.Auto)
{
set.CustomYRange.Max = DataSet.GetMaxY(set.CurrentlyDisplayed);
set.CustomYRange.RoundToNearestPowerOf10();
}
}
Axis.DrawToBuffer(new DrawAxisNavArgs(paintEventArgs.Graphics, ScrollViewRectangle, new DataTimeRange(everything.Max, everything.Min, -BodgeSpacing(new TimeSpan(-everything.Delta)).Ticks), true));
foreach (DataSet set in ScrollWideArchive.Sets.ToArray())
{
if (!set.Draw || !DisplayedUuids.Contains(set.Uuid))
{
continue;
}
lock (Palette.PaletteLock)
{
using (var normalPen = Palette.CreatePen(set.Uuid, Palette.PEN_THICKNESS_NORMAL))
{
LineRenderer.Render(paintEventArgs.Graphics, ScrollViewRectangle, everything, set.CustomYRange, normalPen, null, set.CurrentlyDisplayed, false);
}
}
}
if (DataEventList != null)
{
DataEventList.RenderEvents(paintEventArgs.Graphics, everything, ScrollViewRectangle, 5);
}
paintEventArgs.Graphics.SetClip(clip);
long selectedleft = LongPoint.TranslateToScreen(new LongPoint(GraphLeft.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
long selectedright = LongPoint.TranslateToScreen(new LongPoint(GraphRight.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
paintEventArgs.Graphics.FillRectangle(Palette.ShadowRangeBrush, ScrollViewRectangle.Left, ScrollViewRectangle.Top, selectedleft - (ScrollViewRectangle.Left), ScrollViewRectangle.Height);
paintEventArgs.Graphics.FillRectangle(Palette.ShadowRangeBrush, selectedright, ScrollViewRectangle.Top, ScrollViewRectangle.Width + (ScrollViewRectangle.Left) - selectedright, ScrollViewRectangle.Height);
DrawGripper(paintEventArgs.Graphics, selectedright);
DrawGripper(paintEventArgs.Graphics, selectedleft);
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (ArchiveMaintainer == null || ArchiveMaintainer.LoadingInitialData)
{
return;
}
DataTimeRange everything = CurrentArchiveRange;
LongPoint virtualclicked = LongPoint.DeTranslateFromScreen(new LongPoint(e.Location), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle));
long selectedleft = LongPoint.TranslateToScreen(new LongPoint(GraphLeft.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
long selectedright = LongPoint.TranslateToScreen(new LongPoint(GraphRight.Ticks, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle)).X;
if (MouseDragging == DragMode.Existing)
{
long proposedoffset = ArchiveMaintainer.GraphNow.Ticks - (virtualclicked.X + (GraphWidth.Ticks / 2));
if (proposedoffset + GraphWidth.Ticks > ScrollViewOffset.Ticks + ScrollViewWidth.Ticks)
{
// -------------------------
// | _______________________|____________________________________
// | | ------------- | _______-------- |
// | | / \___|__________/ \ |
// | |---- | ---- -|
// | |_______________________|_______________________________\__/_|
// -------------------------
//
// we have scrolled too far left (off the scroll view)
GraphOffset = TimeSpan.FromTicks(ScrollViewWidth.Ticks + ScrollViewOffset.Ticks - GraphWidth.Ticks);
}
else if (proposedoffset < ScrollViewOffset.Ticks)
{
// -------------------------
// ___________________________________|_______________________ |
// | ------------- _|_____-------- | |
// | / \______________/ | \ | |
// |---- | ---- -| |
// |____________________________________|__________________\__/_| |
// -------------------------
//
// we have scrolled too far right (off the scroll view)
if (GraphOffset == ScrollViewOffset)
{
return;
}
GraphOffset = ScrollViewOffset;
}
else
{
// -------------------------
// ___________|_________________________|______________________
// | -----|------- __|____-------- |
// | / | \______________/ | \ |
// |---- | | ---- -|
// |___________|_________________________|_________________\__/_|
// -------------------------
//
// everything is fine, we are in the middle
GraphOffset = TimeSpan.FromTicks(proposedoffset > 0 ? proposedoffset : 0);
}
if (GraphOffset.Ticks + GraphWidth.Ticks - ScrollViewOffset.Ticks > 0.90 * ScrollViewWidth.Ticks)
{
ScrollStrength = TimeSpan.FromTicks(GraphOffset.Ticks + GraphWidth.Ticks - (ScrollViewOffset.Ticks + (long)(0.90 * ScrollViewWidth.Ticks)));
TimerScroll = ScrollMode.Left;
Scroller.Start();
}
else if (GraphOffset.Ticks - ScrollViewOffset.Ticks < 0.1 * ScrollViewWidth.Ticks)
{
ScrollStrength = TimeSpan.FromTicks((long)(0.1 * ScrollViewWidth.Ticks) - (GraphOffset.Ticks - ScrollViewOffset.Ticks));
TimerScroll = ScrollMode.Right;
Scroller.Start();
}
else
{
TimerScroll = ScrollMode.None;
}
}
else if (MouseDragging == DragMode.New)
{
LongPoint virtualstart = LongPoint.DeTranslateFromScreen(new LongPoint(MouseDragStart, 1), everything, DataRange.UnitRange, new LongRectangle(ScrollViewRectangle));
if (e.X > MouseDragStart && e.X < ScrollViewRectangle.Width)
{
GraphOffset = new TimeSpan(ArchiveMaintainer.GraphNow.Ticks - virtualclicked.X);
GraphWidth = new TimeSpan(virtualclicked.X - virtualstart.X);
}
else if (e.X < MouseDragStart && e.X > 0)
{
GraphOffset = new TimeSpan(ArchiveMaintainer.GraphNow.Ticks - virtualstart.X);
GraphWidth = new TimeSpan(virtualstart.X - virtualclicked.X);
}
else if (e.X < MouseDragStart)
{
GraphOffset = new TimeSpan(ArchiveMaintainer.GraphNow.Ticks - virtualstart.X);
GraphWidth = ScrollViewOffset + ScrollViewWidth - GraphOffset;
}
else if (e.X > MouseDragStart)
{
GraphOffset = ScrollViewOffset;
GraphWidth = new TimeSpan(ScrollViewRight.Ticks - virtualstart.X);
}
}
else if (MouseResizing == ResizeMode.Left)
{
long proposedwidth = ArchiveMaintainer.GraphNow.Ticks - (virtualclicked.X + GraphOffset.Ticks);
if (((proposedwidth * ScrollViewRectangle.Width) / ScrollViewWidth.Ticks) > 2)
{
GraphWidth = proposedwidth + GraphOffset.Ticks < ScrollViewWidth.Ticks + ScrollViewOffset.Ticks ? TimeSpan.FromTicks(proposedwidth) : ScrollViewWidth + ScrollViewOffset - GraphOffset;
}
else
{
GraphWidth = TimeSpan.FromTicks((2 * ScrollViewWidth.Ticks) / ScrollViewRectangle.Width);
}
}
else if (MouseResizing == ResizeMode.Right)
{
long proposedwidth = virtualclicked.X - GraphRight.Ticks;
if (ArchiveMaintainer.GraphNow.Ticks - virtualclicked.X < ScrollViewOffset.Ticks)
{
GraphWidth += GraphOffset - ScrollViewOffset;
GraphOffset = ScrollViewOffset;
}
else if ((((GraphWidth.Ticks + proposedwidth) * ScrollViewRectangle.Width) / ScrollViewWidth.Ticks) > 2)
{
GraphWidth += TimeSpan.FromTicks(virtualclicked.X - GraphRight.Ticks);
GraphOffset = TimeSpan.FromTicks(ArchiveMaintainer.GraphNow.Ticks - virtualclicked.X);
}
else
{
long oldwidth = GraphWidth.Ticks;
GraphWidth = TimeSpan.FromTicks((2 * ScrollViewWidth.Ticks) / ScrollViewRectangle.Width);
GraphOffset += TimeSpan.FromTicks(oldwidth - GraphWidth.Ticks);
}
}
else if (e.Location.X > selectedleft - 3 && e.Location.X < selectedleft + 3)
{
Cursor = Cursors.SizeWE;
return;
}
else if (e.Location.X > selectedright - 3 && e.Location.X < selectedright + 3)
{
Cursor = Cursors.SizeWE;
return;
}
else if (e.Location.X > selectedleft - 3 && e.Location.X < selectedright + 3)
{
Cursor = Cursors.SizeAll;
return;
}
else
{
Cursor = Cursors.Cross;
return;
}
GridSpacing = BodgeSpacing(GraphWidth);
RefreshXRange(false);
}
/// <summary>
/// Screen XY to Virtual
/// </summary>
public static LongPoint DeTranslateFromScreen(LongPoint screenpoint, DataTimeRange xrange, DataRange yrange, LongRectangle rectangle)
{
// work out x, assume origin is bottom right
double x = xrange.Min + (xrange.Delta * (rectangle.Right - screenpoint.X)) / (double)rectangle.Width;
// work out y
double y = yrange.Min + (yrange.Delta * (rectangle.Bottom - screenpoint.Y)) / (double)rectangle.Height;
return new LongPoint((long)x, (long)y);
}