/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <param name="boundable">The container element used as the basis for calculations</param>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(ISvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return(this._deviceValue.Value);
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return(this._deviceValue.Value);
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
float points;
switch (type)
{
case SvgUnitType.Em:
using (var currFont = GetFont(renderer, owner))
{
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points / 72.0f) * ppi;
}
else
{
_deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
}
}
break;
case SvgUnitType.Ex:
using (var currFont = GetFont(renderer, owner))
{
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points * 0.5f / 72.0f) * ppi;
}
else
{
_deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
}
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
// Can't calculate if there is no style owner
var boundable = (renderer == null ? (owner == null ? null : owner.OwnerDocument) : renderer.GetBoundable());
if (boundable == null)
{
_deviceValue = value;
break;
}
System.Drawing.SizeF size = boundable.Bounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + boundable.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + boundable.Location.Y;
break;
default:
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
break;
}
break;
default:
_deviceValue = value;
break;
}
return(this._deviceValue.Value);
}
private IList <float> GetValues(int maxCount, Func <SvgTextBase, IEnumerable <SvgUnit> > listGetter, UnitRenderingType renderingType)
{
var currState = this;
int charCount = 0;
var results = new List <float>();
int resultCount = 0;
while (currState != null)
{
charCount += currState.NumChars;
results.AddRange(listGetter.Invoke(currState.Element).Skip(charCount).Take(maxCount).Select(p => p.ToDeviceValue(currState.Renderer, renderingType, currState.Element)));
if (results.Count > resultCount)
{
maxCount -= results.Count - resultCount;
charCount += results.Count - resultCount;
resultCount = results.Count;
}
if (maxCount < 1)
{
return(results);
}
currState = currState.Parent;
}
return(results);
}
private IList<float> GetValues(int maxCount, Func<SvgTextBase, IEnumerable<SvgUnit>> listGetter, UnitRenderingType renderingType)
{
var currState = this;
int charCount = 0;
var results = new List<float>();
int resultCount = 0;
while (currState != null)
{
charCount += currState.NumChars;
results.AddRange(listGetter.Invoke(currState.Element).Skip(charCount).Take(maxCount).Select(p => p.ToDeviceValue(currState.Renderer, renderingType, currState.Element)));
if (results.Count > resultCount)
{
maxCount -= results.Count - resultCount;
charCount += results.Count - resultCount;
resultCount = results.Count;
}
if (maxCount < 1) return results;
currState = currState.Parent;
}
return results;
}
public static float ToDeviceValue(this SvgUnit svgUnit, UnitRenderingType renderType, SvgElement?owner, SKRect skBounds)
{
/*
* // If it's already been calculated
* if (this._deviceValue.HasValue)
* {
* return this._deviceValue.Value;
* }
*
* if (this._value == 0.0f)
* {
* this._deviceValue = 0.0f;
* return this._deviceValue.Value;
* }
*/
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = svgUnit.Type;
var value = svgUnit.Value;
float?_deviceValue = null;
//if (value == 0.0f)
//{
// _deviceValue = 0.0f;
// return _deviceValue.Value;
//}
float points;
switch (type)
{
case SvgUnitType.Em:
points = value * 9;
_deviceValue = (points / 72.0f) * ppi;
// TODO: Implement GetFont for Skia.
//using (var currFont = GetFont(renderer, owner))
//{
// if (currFont == null)
// {
// points = (float)(value * 9);
// _deviceValue = (points / 72.0f) * ppi;
// }
// else
// {
// _deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
// }
//}
break;
case SvgUnitType.Ex:
points = value * 9;
_deviceValue = (points * 0.5f / 72.0f) * ppi;
// TODO: Implement GetFont for Skia.
//using (var currFont = GetFont(renderer, owner))
//{
// if (currFont == null)
// {
// points = (float)(value * 9);
// _deviceValue = (points * 0.5f / 72.0f) * ppi;
// }
// else
// {
// _deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
// }
// break;
//}
break;
case SvgUnitType.Centimeter:
_deviceValue = (value / cmInInch) * ppi;
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (value / 10) / cmInInch * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
var size = skBounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + skBounds.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + skBounds.Location.Y;
break;
default:
case UnitRenderingType.Other:
// Calculate a percentage value of the normalized viewBox diagonal length.
if (owner?.OwnerDocument != null && owner.OwnerDocument.ViewBox != null && owner.OwnerDocument.ViewBox.Width != 0 && owner.OwnerDocument.ViewBox.Height != 0)
{
_deviceValue = (float)(Math.Sqrt(Math.Pow(owner.OwnerDocument.ViewBox.Width, 2) + Math.Pow(owner.OwnerDocument.ViewBox.Height, 2)) / Math.Sqrt(2) * value / 100.0);
}
else
{
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
}
break;
}
break;
default:
_deviceValue = value;
break;
}
return(_deviceValue.Value);
}
internal static float ToDeviceValue(this SvgUnit svgUnit, UnitRenderingType renderType, SvgElement?owner, SKRect skBounds)
{
const float cmInInch = 2.54f;
var ppi = SvgDocument.PointsPerInch;
var type = svgUnit.Type;
var value = svgUnit.Value;
float? _deviceValue;
float points;
float? ownerFontSize = owner?.FontSize;
switch (type)
{
case SvgUnitType.Em:
if (ownerFontSize.HasValue)
{
_deviceValue = ownerFontSize.Value * value;
}
else
{
points = value * 9;
_deviceValue = points / 72.0f * ppi;
}
break;
case SvgUnitType.Ex:
points = value * 9;
_deviceValue = points * 0.5f / 72.0f * ppi;
break;
case SvgUnitType.Centimeter:
_deviceValue = value / cmInInch * ppi;
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = value / 10 / cmInInch * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = value * 12 / 72 * ppi;
break;
case SvgUnitType.Point:
_deviceValue = value / 72 * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
var size = skBounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = size.Width / 100 * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = size.Width / 100 * value + skBounds.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = size.Height / 100 * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = size.Height / 100 * value + skBounds.Location.Y;
break;
default:
case UnitRenderingType.Other:
if (owner?.OwnerDocument?.ViewBox is { } && owner.OwnerDocument.ViewBox.Width != 0 && owner.OwnerDocument.ViewBox.Height != 0)
{
_deviceValue = (float)(Math.Sqrt(Math.Pow(owner.OwnerDocument.ViewBox.Width, 2) + Math.Pow(owner.OwnerDocument.ViewBox.Height, 2)) / Math.Sqrt(2) * value / 100.0);
}
else
{
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
}
break;
}
/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <param name="boundable">The container element used as the basis for calculations</param>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(ISvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return this._deviceValue.Value;
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return this._deviceValue.Value;
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
float points;
switch (type)
{
case SvgUnitType.Em:
using (var currFont = GetFont(renderer, owner))
{
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points / 72.0f) * ppi;
}
else
{
_deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
}
}
break;
case SvgUnitType.Ex:
using (var currFont = GetFont(renderer, owner))
{
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points * 0.5f / 72.0f) * ppi;
}
else
{
_deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
}
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
// Can't calculate if there is no style owner
var boundable = (renderer == null ? (owner == null ? null : owner.OwnerDocument) : renderer.GetBoundable());
if (boundable == null)
{
_deviceValue = value;
break;
}
System.Drawing.SizeF size = boundable.Bounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + boundable.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + boundable.Location.Y;
break;
default:
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
break;
}
break;
default:
_deviceValue = value;
break;
}
return this._deviceValue.Value;
}
/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <param name="boundable">The container element used as the basis for calculations</param>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(SvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return(this._deviceValue.Value);
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return(this._deviceValue.Value);
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
// Deal with fractional pattern units
var coordElem = owner as ISvgSupportsCoordinateUnits;
if (coordElem != null && coordElem.GetUnits() == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
var element = owner as SvgElement;
if (element != null)
{
var pattern = element.Parents.OfType <SvgPatternServer>().FirstOrDefault();
if (pattern != null && pattern.PatternContentUnits == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
}
float points;
Font currFont;
switch (type)
{
case SvgUnitType.Em:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points / 72.0f) * ppi;
}
else
{
_deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Ex:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points * 0.5f / 72.0f) * ppi;
}
else
{
_deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
// Can't calculate if there is no style owner
var boundable = (renderer == null ? (owner == null ? null : owner.OwnerDocument) : renderer.Boundable());
if (boundable == null)
{
_deviceValue = value;
break;
}
System.Drawing.SizeF size = boundable.Bounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + boundable.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + boundable.Location.Y;
break;
default:
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
break;
}
break;
default:
_deviceValue = value;
break;
}
return(this._deviceValue.Value);
}
/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <param name="boundable">The container element used as the basis for calculations</param>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(SvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return this._deviceValue.Value;
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return this._deviceValue.Value;
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
// Deal with fractional pattern units
var coordElem = owner as ISvgSupportsCoordinateUnits;
if (coordElem != null && coordElem.GetUnits() == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
var element = owner as SvgElement;
if (element != null)
{
var pattern = element.Parents.OfType<SvgPatternServer>().FirstOrDefault();
if (pattern != null && pattern.PatternContentUnits == SvgCoordinateUnits.ObjectBoundingBox && type != SvgUnitType.Percentage)
{
type = SvgUnitType.Percentage;
value *= 100;
}
}
float points;
Font currFont;
switch (type)
{
case SvgUnitType.Em:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points / 72.0f) * ppi;
}
else
{
_deviceValue = value * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Ex:
currFont = GetFont(renderer, owner);
if (currFont == null)
{
points = (float)(value * 9);
_deviceValue = (points * 0.5f / 72.0f) * ppi;
}
else
{
_deviceValue = value * 0.5f * (currFont.SizeInPoints / 72.0f) * ppi;
}
break;
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
// Can't calculate if there is no style owner
var boundable = (renderer == null ? (owner == null ? null : owner.OwnerDocument) : renderer.Boundable());
if (boundable == null)
{
_deviceValue = value;
break;
}
System.Drawing.SizeF size = boundable.Bounds.Size;
switch (renderType)
{
case UnitRenderingType.Horizontal:
_deviceValue = (size.Width / 100) * value;
break;
case UnitRenderingType.HorizontalOffset:
_deviceValue = (size.Width / 100) * value + boundable.Location.X;
break;
case UnitRenderingType.Vertical:
_deviceValue = (size.Height / 100) * value;
break;
case UnitRenderingType.VerticalOffset:
_deviceValue = (size.Height / 100) * value + boundable.Location.Y;
break;
default:
_deviceValue = (float)(Math.Sqrt(Math.Pow(size.Width, 2) + Math.Pow(size.Height, 2)) / Math.Sqrt(2) * value / 100.0);
break;
}
break;
default:
_deviceValue = value;
break;
}
return this._deviceValue.Value;
}
/// <summary>
/// Converts the current unit to one that can be used at render time.
/// </summary>
/// <returns>The representation of the current unit in a device value (usually pixels).</returns>
public float ToDeviceValue(ISvgRenderer renderer, UnitRenderingType renderType, SvgElement owner)
{
// If it's already been calculated
if (this._deviceValue.HasValue)
{
return(this._deviceValue.Value);
}
if (this._value == 0.0f)
{
this._deviceValue = 0.0f;
return(this._deviceValue.Value);
}
// http://www.w3.org/TR/CSS21/syndata.html#values
// http://www.w3.org/TR/SVG11/coords.html#Units
const float cmInInch = 2.54f;
int ppi = SvgDocument.PointsPerInch;
var type = this.Type;
var value = this.Value;
switch (type)
{
case SvgUnitType.Em:
_deviceValue = value;
break;
case SvgUnitType.Ex:
_deviceValue = value;
break;
case SvgUnitType.Centimeter:
_deviceValue = (float)((value / cmInInch) * ppi);
break;
case SvgUnitType.Inch:
_deviceValue = value * ppi;
break;
case SvgUnitType.Millimeter:
_deviceValue = (float)((value / 10) / cmInInch) * ppi;
break;
case SvgUnitType.Pica:
_deviceValue = ((value * 12) / 72) * ppi;
break;
case SvgUnitType.Point:
_deviceValue = (value / 72) * ppi;
break;
case SvgUnitType.Pixel:
_deviceValue = value;
break;
case SvgUnitType.User:
_deviceValue = value;
break;
case SvgUnitType.Percentage:
_deviceValue = value;
break;
default:
_deviceValue = value;
break;
}
return(this._deviceValue.Value);
}
