|
public ToDeviceValue ( ISvgRenderer renderer, UnitRenderingType renderType, |
||
| renderer | ISvgRenderer | |
| renderType | UnitRenderingType | |
| owner | ||
| return | float | |
private void DrawString(GraphicsPath path, SvgUnit x, SvgUnit y, SvgUnit dx, SvgUnit dy, Font font, float fontSize, string text)
{
PointF location = PointF.Empty;
SizeF stringBounds;
lock (_stringMeasure)
{
stringBounds = _stringMeasure.MeasureString(text, font);
}
float xToDevice = x.ToDeviceValue(this) + dx.ToDeviceValue(this);
float yToDevice = y.ToDeviceValue(this, true) + dy.ToDeviceValue(this, true);
// Minus FontSize because the x/y coords mark the bottom left, not bottom top.
switch (this.TextAnchor)
{
case SvgTextAnchor.Start:
location = new PointF(xToDevice, yToDevice - stringBounds.Height);
break;
case SvgTextAnchor.Middle:
location = new PointF(xToDevice - (stringBounds.Width / 2), yToDevice - stringBounds.Height);
break;
case SvgTextAnchor.End:
location = new PointF(xToDevice - stringBounds.Width, yToDevice - stringBounds.Height);
break;
}
// No way to do letter-spacing or word-spacing, so do manually
if (this.LetterSpacing.Value > 0.0f || this.WordSpacing.Value > 0.0f)
{
// Cut up into words, or just leave as required
string[] words = (this.WordSpacing.Value > 0.0f) ? text.Split(' ') : new string[] { text };
float wordSpacing = this.WordSpacing.ToDeviceValue(this);
float letterSpacing = this.LetterSpacing.ToDeviceValue(this);
float start = this.X.ToDeviceValue(this);
foreach (string word in words)
{
// Only do if there is line spacing, just write the word otherwise
if (this.LetterSpacing.Value > 0.0f)
{
char[] characters = word.ToCharArray();
foreach (char currentCharacter in characters)
{
path.AddString(currentCharacter.ToString(), new FontFamily(this._fontFamily), (int)font.Style, fontSize, location, StringFormat.GenericTypographic);
location = new PointF(path.GetBounds().Width + start + letterSpacing, location.Y);
}
}
else
{
path.AddString(word, new FontFamily(this._fontFamily), (int)font.Style, fontSize, location, StringFormat.GenericTypographic);
}
// Move the location of the word to be written along
location = new PointF(path.GetBounds().Width + start + wordSpacing, location.Y);
}
}
else
{
if (!string.IsNullOrEmpty(text))
{
path.AddString(text, new FontFamily(this._fontFamily), (int)font.Style, fontSize, location, StringFormat.GenericTypographic);
}
}
}
public static System.Drawing.PointF GetDevicePointOffset(SvgUnit x, SvgUnit y, ISvgRenderer renderer, SvgElement owner)
{
return(new System.Drawing.PointF(x.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
y.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner)));
}
public static System.Drawing.SizeF GetDeviceSize(SvgUnit width, SvgUnit height, ISvgRenderer renderer, SvgElement owner)
{
return(new System.Drawing.SizeF(width.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
height.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner)));
}
public static System.Drawing.SizeF GetDeviceSize(SvgUnit width, SvgUnit height, ISvgRenderer renderer, SvgElement owner)
{
return new System.Drawing.SizeF(width.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
height.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner));
}
public static System.Drawing.PointF GetDevicePointOffset(SvgUnit x, SvgUnit y, ISvgRenderer renderer, SvgElement owner)
{
return new System.Drawing.PointF(x.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
y.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner));
}
/// <summary>
/// Applies the required transforms to <see cref="SvgRenderer"/>.
/// </summary>
/// <param name="renderer">The <see cref="SvgRenderer"/> to be transformed.</param>
protected internal override bool PushTransforms(SvgRenderer renderer)
{
if (!base.PushTransforms(renderer))
{
return(false);
}
if (!this.ViewBox.Equals(SvgViewBox.Empty))
{
var width = this.Width.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
var height = this.Height.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
var fScaleX = width / this.ViewBox.Width;
var fScaleY = height / this.ViewBox.Height;
var fMinX = -this.ViewBox.MinX;
var fMinY = -this.ViewBox.MinY;
if (AspectRatio.Align != SvgPreserveAspectRatio.none)
{
if (AspectRatio.Slice)
{
fScaleX = Math.Max(fScaleX, fScaleY);
fScaleY = Math.Max(fScaleX, fScaleY);
}
else
{
fScaleX = Math.Min(fScaleX, fScaleY);
fScaleY = Math.Min(fScaleX, fScaleY);
}
float fViewMidX = (this.ViewBox.Width / 2) * fScaleX;
float fViewMidY = (this.ViewBox.Height / 2) * fScaleY;
float fMidX = width / 2;
float fMidY = height / 2;
switch (AspectRatio.Align)
{
case SvgPreserveAspectRatio.xMinYMin:
break;
case SvgPreserveAspectRatio.xMidYMin:
fMinX += fMidX - fViewMidX;
break;
case SvgPreserveAspectRatio.xMaxYMin:
fMinX += width - this.ViewBox.Width * fScaleX;
break;
case SvgPreserveAspectRatio.xMinYMid:
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMidYMid:
fMinX += fMidX - fViewMidX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMaxYMid:
fMinX += width - this.ViewBox.Width * fScaleX;
fMinY += fMidY - fViewMidY;
break;
case SvgPreserveAspectRatio.xMinYMax:
fMinY += height - this.ViewBox.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMidYMax:
fMinX += fMidX - fViewMidX;
fMinY += height - this.ViewBox.Height * fScaleY;
break;
case SvgPreserveAspectRatio.xMaxYMax:
fMinX += width - this.ViewBox.Width * fScaleX;
fMinY += height - this.ViewBox.Height * fScaleY;
break;
default:
break;
}
}
var x = _x.ToDeviceValue(renderer, UnitRenderingType.Horizontal, this);
var y = _y.ToDeviceValue(renderer, UnitRenderingType.Vertical, this);
renderer.AddClip(new Region(new RectangleF(x, y, width, height)));
renderer.ScaleTransform(fScaleX, fScaleY, MatrixOrder.Prepend);
renderer.TranslateTransform(x, y);
renderer.TranslateTransform(fMinX, fMinY);
}
return(true);
}
public static PointF GetDevicePoint(SvgUnit x, SvgUnit y, ISvgRenderer renderer, SvgElement owner)
{
return(new PointF(x.ToDeviceValue(renderer, UnitRenderingType.Horizontal, owner),
y.ToDeviceValue(renderer, UnitRenderingType.Vertical, owner)));
}
public static Vector2 GetDevicePointOffset(SvgUnit x, SvgUnit y, ISvgRenderer renderer, SvgElement owner)
{
return(new Vector2(x.ToDeviceValue(renderer, UnitRenderingType.HorizontalOffset, owner),
y.ToDeviceValue(renderer, UnitRenderingType.VerticalOffset, owner)));
}