protected override void OnPaintOffScreen(PaintEventArgs e)
{
PolarGraphics f = base.CreatePolarGraphics(e.Graphics);
// What altitude are we drawing?
#if PocketPC
Distance AltitudeToRender = _Altitude;
#else
Distance AltitudeToRender = new Distance(_ValueInterpolator[_InterpolationIndex], _Altitude.Units);
#endif
// There are 100 tick marks in 360 degrees. 3.6° per tick mark
double ConversionFactor = 3.6;
// Draw tick marks
if (_MinorTickPen != null)
{
for (double alt = 0; alt < 100; alt += 1)
{
// Convert the speed to an angle
Angle angle = new Angle(alt * ConversionFactor);
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(95, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(_MinorTickPen, start, end);
}
}
// Draw tick marks
if (_MajorTickPen != null)
{
for (double alt = 0; alt < 100; alt += 10)
{
// Convert the speed to an angle
Angle angle = new Angle(alt * ConversionFactor);
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(94, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(_MajorTickPen, start, end);
// And also a string
string s = Convert.ToString(alt * 0.1, CultureInfo.CurrentCulture);
f.DrawCenteredString(s, _AltitudeLabelFont, _AltitudeLabelBrush,
new PolarCoordinate(85, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
}
}
// Calculate all needle values
double pTensOfThousandsValue = AltitudeToRender.Value / 1000.0;
double pThousandsValue = AltitudeToRender.Value / 100.0;
double pValue = AltitudeToRender.Value / 10.0;
// Now draw the tens-of-thousands needle
// Rotate the needle to the right place
PolarCoordinate[] Needle1 = new PolarCoordinate[_TensOfThousandsNeedle.Length];
for (int index = 0; index < Needle1.Length; index++)
{
Needle1[index] = _TensOfThousandsNeedle[index].Rotate(pTensOfThousandsValue * ConversionFactor);
}
// Now draw the tens-of-thousands needle
// Rotate the needle to the right place
PolarCoordinate[] Needle2 = new PolarCoordinate[_ThousandsNeedle.Length];
for (int index = 0; index < Needle2.Length; index++)
{
Needle2[index] = _ThousandsNeedle[index].Rotate(pThousandsValue * ConversionFactor);
}
// Now draw the tens-of-Hundreds needle
// Rotate the needle to the right place
PolarCoordinate[] Needle3 = new PolarCoordinate[_HundredsNeedle.Length];
for (int index = 0; index < Needle3.Length; index++)
{
Needle3[index] = _HundredsNeedle[index].Rotate(pValue * ConversionFactor);
}
string AltitudeString = AltitudeToRender.ToString(_ValueFormat, CultureInfo.CurrentCulture);
//SizeF FontSize = f.Graphics.MeasureString(AltitudeString, pValueFont);
#if PocketPC
f.DrawCenteredString(AltitudeString, _ValueFont,
_ValueBrush, new PolarCoordinate(45.0f, 0.0, Azimuth.North, PolarCoordinateOrientation.Clockwise));
#else
f.DrawRotatedString(AltitudeString, _ValueFont,
_ValueBrush, new PolarCoordinate(45.0f, Angle.Empty, Azimuth.North, PolarCoordinateOrientation.Clockwise));
#endif
// Draw an ellipse at the center
f.DrawEllipse(_CenterPen, PolarCoordinate.Empty, 10);
#if !PocketPC
f.Graphics.TranslateTransform(_NeedleShadowSize.Width, _NeedleShadowSize.Height, MatrixOrder.Append);
f.FillPolygon(_NeedleShadowBrush, Needle1);
f.FillPolygon(_NeedleShadowBrush, Needle2);
f.FillPolygon(_NeedleShadowBrush, Needle3);
f.Graphics.ResetTransform();
#endif
f.FillPolygon(_TensOfThousandsBrush, Needle1);
f.DrawPolygon(_TensOfThousandsPen, Needle1);
f.FillPolygon(_ThousandsBrush, Needle2);
f.DrawPolygon(_ThousandsPen, Needle2);
f.FillPolygon(_HundredsBrush, Needle3);
f.DrawPolygon(_HundredsPen, Needle3);
// Draw an ellipse at the center
f.FillEllipse(_HundredsBrush, PolarCoordinate.Empty, 7);
f.DrawEllipse(_HundredsPen, PolarCoordinate.Empty, 7);
}
protected override void OnPaintOffScreen(PaintEventArgs e)
{
PolarGraphics f = base.CreatePolarGraphics(e.Graphics);
// What altitude are we drawing?
#if PocketPC
Speed SpeedToRender = pSpeed;
#else
Speed SpeedToRender = new Speed(ValueInterpolator[InterpolationIndex], pSpeed.Units);
#endif
// Cache drawing intervals and such to prevent a race condition
double MinorInterval = pMinorTickInterval.Value;
double MajorInterval = pMajorTickInterval.Value;
double CachedSpeedLabelInterval = pSpeedLabelInterval.ToUnitType(pMaximumSpeed.Units).Value;
Speed MaxSpeed = pMaximumSpeed.Clone();
double MinorStep = pMinorTickInterval.ToUnitType(pMaximumSpeed.Units).Value;
double MajorStep = pMajorTickInterval.ToUnitType(pMaximumSpeed.Units).Value;
// Draw tick marks
double angle;
PolarCoordinate start;
PolarCoordinate end;
#region Draw minor tick marks
if (MinorInterval > 0)
{
for (double speed = 0; speed < MaxSpeed.Value; speed += MinorStep)
{
// Convert the speed to an angle
angle = speed * ConversionFactor + pMinimumAngle.DecimalDegrees;
// Get the coordinate of the line's start
start = new PolarCoordinate(95, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
end = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(pMinorTickPen, start, end);
}
}
#endregion
#region Draw major tick marks
if (MajorInterval > 0)
{
for (double speed = 0; speed < MaxSpeed.Value; speed += MajorStep)
{
// Convert the speed to an angle
angle = speed * ConversionFactor + pMinimumAngle.DecimalDegrees;
// Get the coordinate of the line's start
start = new PolarCoordinate(90, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
end = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(pMajorTickPen, start, end);
}
#region Draw a major tick mark at the maximum speed
// Convert the speed to an angle
angle = MaxSpeed.Value * ConversionFactor + pMinimumAngle.DecimalDegrees;
// Get the coordinate of the line's start
start = new PolarCoordinate(90, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
end = new PolarCoordinate(100, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(pMajorTickPen, start, end);
#endregion
}
#endregion
if (CachedSpeedLabelInterval > 0)
{
for (double speed = 0; speed < MaxSpeed.Value; speed += CachedSpeedLabelInterval)
{
// Convert the speed to an angle
angle = speed * ConversionFactor + pMinimumAngle.DecimalDegrees;
// And draw a line
f.DrawCenteredString(new Speed(speed, MaxSpeed.Units).ToString(pSpeedLabelFormat, CultureInfo.CurrentCulture), pSpeedLabelFont, pSpeedLabelBrush,
new PolarCoordinate(75, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise));
}
// Convert the speed to an angle
angle = MaxSpeed.Value * ConversionFactor + pMinimumAngle.DecimalDegrees;
// And draw the speed label
f.DrawCenteredString(MaxSpeed.ToString(pSpeedLabelFormat, CultureInfo.CurrentCulture), pSpeedLabelFont, pSpeedLabelBrush,
new PolarCoordinate(75, angle, Azimuth.South, PolarCoordinateOrientation.Clockwise));
}
// Draw the units for the speedometer
if (pIsUnitLabelVisible)
{
f.DrawCenteredString(pMaximumSpeed.ToString("u", CultureInfo.CurrentCulture), pSpeedLabelFont, pSpeedLabelBrush,
new PolarCoordinate(90, Angle.Empty, Azimuth.South, PolarCoordinateOrientation.Clockwise));
}
PolarCoordinate[] Needle = new PolarCoordinate[SpeedometerNeedle.Length];
for (int index = 0; index < Needle.Length; index++)
{
Needle[index] = SpeedometerNeedle[index].Rotate((SpeedToRender.ToUnitType(pMaximumSpeed.Units).Value *this.ConversionFactor) + pMinimumAngle.DecimalDegrees);
}
// Draw an ellipse at the center
f.DrawEllipse(pCenterPen, PolarCoordinate.Empty, 10);
#if !PocketPC
// Now draw a shadow
f.Graphics.TranslateTransform(pNeedleShadowSize.Width, pNeedleShadowSize.Height, MatrixOrder.Append);
f.FillPolygon(pNeedleShadowBrush, Needle);
f.Graphics.ResetTransform();
#endif
// Then draw the actual needle
f.FillPolygon(pNeedleFillBrush, Needle);
f.DrawPolygon(pNeedleOutlinePen, Needle);
}
protected override void OnPaintOffScreen(PaintEventArgs e)
{
PolarGraphics f = CreatePolarGraphics(e.Graphics);
// What bearing are we drawing?
#if PocketPC
Azimuth BearingToRender = _Bearing;
#else
Azimuth BearingToRender;
try
{
BearingToRender = new Azimuth(_ValueInterpolator[_InterpolationIndex]);
}
catch
{
throw;
}
#endif
// Cache drawing options in order to prevent race conditions during
// drawing!
double MinorInterval = _MinorTickInterval.DecimalDegrees;
double MajorInterval = _MajorTickInterval.DecimalDegrees;
double DirectionInterval = _DirectionLabelInterval.DecimalDegrees;
double AngleInterval = _AngleLabelInterval.DecimalDegrees;
// Draw tick marks
if (MinorInterval > 0)
{
for (double angle = 0; angle < 360; angle += MinorInterval)
{
// And draw a line
f.DrawLine(_MinorTickPen, new PolarCoordinate(98, angle), new PolarCoordinate(100, angle));
}
}
// Draw tick marks
if (MajorInterval > 0)
{
for (double angle = 0; angle < 360; angle += MajorInterval)
{
// And draw a line
f.DrawLine(_MajorTickPen, new PolarCoordinate(95, angle), new PolarCoordinate(100, angle));
}
}
if (DirectionInterval > 0)
{
for (double angle = 0; angle < 360; angle += DirectionInterval)
{
// And draw a line
f.DrawLine(_DirectionTickPen, new PolarCoordinate(92, angle), new PolarCoordinate(100, angle));
}
}
if (AngleInterval > 0)
{
for (double angle = 0; angle < 360; angle += AngleInterval)
{
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(60, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
#if PocketPC
f.DrawCenteredString(((Angle)angle).ToString(_AngleLabelFormat, CultureInfo.CurrentCulture), _AngleLabelFont, _AngleLabelBrush, start);
#else
f.DrawRotatedString(((Angle)angle).ToString(_AngleLabelFormat, CultureInfo.CurrentCulture), _AngleLabelFont, _AngleLabelBrush, start);
#endif
}
}
if (DirectionInterval > 0)
{
for (double angle = 0; angle < 360; angle += DirectionInterval)
{
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(80, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
#if PocketPC
f.DrawCenteredString(((Azimuth)angle).ToString("c", CultureInfo.CurrentCulture), _DirectionLabelFont, _DirectionLabelBrush, start);
#else
f.DrawRotatedString(((Azimuth)angle).ToString("c", CultureInfo.CurrentCulture), _DirectionLabelFont, _DirectionLabelBrush, start);
#endif
}
}
// Draw an ellipse at the center
f.DrawEllipse(_CenterPen, PolarCoordinate.Empty, 10);
// Now draw the needle shadow
PolarCoordinate[] NeedleNorth = NeedlePointsNorth.Clone() as PolarCoordinate[];
PolarCoordinate[] NeedleSouth = NeedlePointsSouth.Clone() as PolarCoordinate[];
// Adjust the needle to the current bearing
for (int index = 0; index < NeedleNorth.Length; index++)
{
NeedleNorth[index] = NeedleNorth[index].Rotate(BearingToRender.DecimalDegrees);
NeedleSouth[index] = NeedleSouth[index].Rotate(BearingToRender.DecimalDegrees);
}
#if !PocketPC
// Now draw a shadow
f.Graphics.TranslateTransform(pNeedleShadowSize.Width, pNeedleShadowSize.Height, MatrixOrder.Append);
f.FillPolygon(pNeedleShadowBrush, NeedleNorth);
f.FillPolygon(pNeedleShadowBrush, NeedleSouth);
f.Graphics.ResetTransform();
#endif
f.FillPolygon(pNorthNeedleBrush, NeedleNorth);
f.DrawPolygon(pNorthNeedlePen, NeedleNorth);
f.FillPolygon(pSouthNeedleBrush, NeedleSouth);
f.DrawPolygon(pSouthNeedlePen, NeedleSouth);
}
//#if !PocketPC || Framework20
// protected override void OnHandleCreated(EventArgs e)
// {
// // Subscribe to events
// try
// {
// base.OnHandleCreated(e);
// // Hook into the date/time changed event
//#if !PocketPC
// if(DesignMode)
// return;
//#endif
// DotSpatial.Positioning.Gps.IO.Devices.UtcDateTimeChanged += new EventHandler<DateTimeEventArgs>(Devices_CurrentUtcDateTimeChanged);
// }
// catch
// {
// }
// }
// protected override void OnHandleDestroyed(EventArgs e)
// {
// try
// {
//#if !PocketPC
// if(DesignMode)
// return;
//#endif
// // Hook into the date/time changed event
// DotSpatial.Positioning.Gps.IO.Devices.UtcDateTimeChanged -= new EventHandler<DateTimeEventArgs>(Devices_CurrentUtcDateTimeChanged);
// }
// catch
// {
// }
// finally
// {
// base.OnHandleDestroyed(e);
// }
// }
//#endif
/* This method is called whenever the control must be rendered. All rendering takes
* place off-screen, which prevents flickering. The "PolarControl" base class automatically
* handles tasks such as resizing and smoothing. All you have to be concerned with is
* calculating the polar coordinates to draw.
*/
////[CLSCompliant(false)]
protected override void OnPaintOffScreen(PaintEventArgs e)
{
/* The DotSpatial.Positioning comes with a special class named "PolarGraphics," which works
* almost identically to the "Graphics" class, except that coordinates are given
* in polar form instead of (X, Y).
*
* Polar coordinates are given as an angle and a radius. The angle is between 0°
* and 360° clockwise from the top of the control. The radius is zero (0) at the
* center of the control, and 100 at the outer edge. So, a polar coordinate of 90°
* with a radius of 50 would mark a point straight to the right, half way to the
* edge. Mastering polar coordinates gives you the opportunity to create your
* own controls.
*/
// Make a PolarGraphics class for easier drawing using polar coordinates
PolarGraphics f = CreatePolarGraphics(e.Graphics);
#region Drawing of Tick Marks
// Draw sixty small tick marks around the control
for (double value = 0; value < 60; value += 1)
{
// There are 120 tick marks in 360°
Angle angle = new Angle(value * (360 / 60));
// Get the coordinate of the line's start and end
PolarCoordinate start = new PolarCoordinate(96, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw a line
f.DrawLine(pMinorTickPen, start, end);
}
// Draw twelve tick marks
for (double value = 1; value <= 12; value += 1)
{
// Convert the value to an angle
Angle angle = new Angle(value * (360 / 12));
// Get the coordinate of the line's start
PolarCoordinate start = new PolarCoordinate(93, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
PolarCoordinate end = new PolarCoordinate(100, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise);
// And draw the tick mark
f.DrawLine(pMajorTickPen, start, end);
// Label the clock position around the circle
if (pHoursFont != null)
{
string s = Convert.ToString(value, CultureInfo.CurrentUICulture);
f.DrawCenteredString(s, pHoursFont, pValueLabelBrush,
new PolarCoordinate(85, angle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
}
}
#endregion
/* In order to make the control more appealing, we'll make the hours, minutes, and
* seconds hand as accurate as possible. For example, if the time is 5:30, the hours
* hand should be halfway between 5 and 6, or 5.5. To get these values, we'll
* calculate "fractional" hours, minutes and seconds using the TimeSpan structure.
*
* when you look at the control, you'll see that the minutes hand moves slowly but
* smoothly as time progresses. With smoothing enabled, you almost can't tell it's
* actually moving.
*/
// Calculate the time elapsed since midnight
DateTime Midnight = new DateTime(pValue.Year, pValue.Month, pValue.Day);
TimeSpan TimeSinceMidnight = pValue.Subtract(Midnight);
#region Drawing of Hours
// There are twelve hours in 360° of a circle
Angle HourAngle = new Angle(TimeSinceMidnight.TotalHours * (360 / 12));
// Draw the hour "needle"
f.DrawLine(pHoursPen, PolarCoordinate.Center,
new PolarCoordinate(30, HourAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
#endregion
#region Drawing of Minutes
// There are sixty minutes in 360° of a circle
Angle MinuteAngle = new Angle(TimeSinceMidnight.TotalMinutes * (360 / 60));
// Draw the Minute "needle"
f.DrawLine(pMinutesPen, PolarCoordinate.Center,
new PolarCoordinate(80, MinuteAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
#endregion
#region Drawing of Seconds
// There are sixty seconds in 360° of a circle
Angle SecondAngle = new Angle(TimeSinceMidnight.TotalSeconds * (360 / 60));
// Draw the Seconds "needle"
f.DrawLine(pSecondsPen, PolarCoordinate.Center,
new PolarCoordinate(90, SecondAngle, Azimuth.North, PolarCoordinateOrientation.Clockwise));
#endregion
}
