public void RotateAt (float angle, float centerX, float centerY)
{
angle = Conversions.DegreesToRadians (angle);
var sina = (float)Math.Sin (angle);
var cosa = (float)Math.Cos (angle);
var matrix = new CGAffineTransform(cosa, sina, -sina, cosa, centerX - centerX * cosa + centerY * sina, centerY - centerX * sina - centerY * cosa);
control = CGAffineTransform.Multiply (matrix, control);
}
//
// Operations
//
public static CGAffineTransform Multiply (CGAffineTransform a, CGAffineTransform b)
{
return new CGAffineTransform (a.xx * b.xx + a.yx * b.xy,
a.xx * b.yx + a.yx * b.yy,
a.xy * b.xx + a.yy * b.xy,
a.xy * b.yx + a.yy * b.yy,
a.x0 * b.xx + a.y0 * b.xy + b.x0,
a.x0 * b.yx + a.y0 * b.yy + b.y0);
}
public CGPattern (RectangleF bounds, CGAffineTransform matrix, float xStep, float yStep, CGPatternTiling tiling, bool isColored, DrawPattern drawPattern)
{
if (drawPattern == null)
throw new ArgumentNullException ("drawPattern");
callbacks.draw = DrawCallback;
callbacks.release = ReleaseCallback;
callbacks.version = 0;
this.draw_pattern = drawPattern;
gch = GCHandle.Alloc (this);
handle = CGPatternCreate (GCHandle.ToIntPtr (gch) , bounds, matrix, xStep, yStep, tiling, isColored, ref callbacks);
}
public Matrix(Rectangle rect, Point[] plgpts)
{
if (plgpts == null)
throw new ArgumentNullException ("plgpts");
if (plgpts.Length != 3)
throw new ArgumentException ("plgpts");
Point p0 = plgpts [0];
Point p1 = plgpts [1];
Point p2 = plgpts [2];
float m11 = (p1.X - p0.X) / (float)rect.Width;
float m12 = (p1.Y - p0.Y) / (float)rect.Width;
float m21 = (p2.X - p0.X) / (float)rect.Height;
float m22 = (p2.X - p0.X) / (float)rect.Height;
transform = new CGAffineTransform (m11, m12, m21, m22, p0.X, p0.Y);
transform.Translate (rect.Width, rect.Height);
}
public void Apply(GraphicsHandler graphics)
{
graphics.SetFillColorSpace();
#if OSX
if (graphics.DisplayView != null)
{
// adjust for position of the current view relative to the window
var pos = graphics.DisplayView.ConvertPointToView(sd.PointF.Empty, null);
graphics.Control.SetPatternPhase(new sd.SizeF(pos.X, pos.Y));
}
#endif
// make current transform apply to the pattern
var currentTransform = graphics.CurrentTransform;
if (pattern == null || viewTransform != currentTransform)
{
viewTransform = currentTransform;
SetPattern();
}
graphics.Control.SetFillPattern(pattern, alpha);
}
public void AddCurveToPoint(CGAffineTransform transform, float cp1x, float cp1y, float cp2x, float cp2y, float x, float y)
{
CGPathAddCurveToPoint(handle, ref transform, cp1x, cp1y, cp2x, cp2y, x, y);
}
public void AddRects(CGAffineTransform m, RectangleF [] rects)
{
CGPathAddRects(handle, ref m, rects, rects.Length);
}
extern static bool CGPathContainsPoint(IntPtr path, ref CGAffineTransform m, PointF point, bool eoFill);
extern static void CGPathAddCurveToPoint(IntPtr path, ref CGAffineTransform m, float cp1x, float cp1y, float cp2x, float cp2y, float x, float y);
extern static void CGPathAddEllipseInRect(IntPtr path, ref CGAffineTransform m, RectangleF rect);
extern static void CGPathAddArcToPoint(IntPtr path, ref CGAffineTransform m, float x1, float y1, float x2, float y2, float radius);
public void AddArc(CGAffineTransform m, float x, float y, float radius, float startAngle, float endAngle, bool clockwise)
{
CGPathAddArc(handle, ref m, x, y, radius, startAngle, endAngle, clockwise);
}
public void AddRects (CGAffineTransform m, RectangleF [] rects, int count)
{
if (count > rects.Length)
throw new ArgumentException ("counts");
CGPathAddRects (handle, ref m, rects, count);
}
public void AddElipseInRect(CGAffineTransform m, RectangleF rect)
{
CGPathAddEllipseInRect(handle, ref m, rect);
}
extern static void CGPathAddArc(IntPtr path, ref CGAffineTransform m, float x, float y, float radius, float startAngle, float endAngle, bool clockwise);
extern static void CGPathAddEllipseInRect(IntPtr path, ref CGAffineTransform m, RectangleF rect);
public void AddLines(CGAffineTransform m, PointF [] points)
{
CGPathAddLines(handle, ref m, points, points.Length);
}
extern static void CGPathAddLines(IntPtr path, ref CGAffineTransform m, PointF [] points, int size_t_count);
public void AddCurveToPoint (CGAffineTransform transform, float cp1x, float cp1y, float cp2x, float cp2y, float x, float y)
{
CGPathAddCurveToPoint (handle, ref transform, cp1x, cp1y, cp2x, cp2y, x, y);
}
extern static void CGPathAddArcToPoint(IntPtr path, ref CGAffineTransform m, float x1, float y1, float x2, float y2, float radius);
extern static void CGPathAddRects(IntPtr path, ref CGAffineTransform m, RectangleF [] rects, int size_t_count);
public void AddArcToPoint(CGAffineTransform m, float x1, float y1, float x2, float y2, float radius)
{
CGPathAddArcToPoint(handle, ref m, x1, y1, x2, y2, radius);
}
public void AddLines (CGAffineTransform m, PointF [] points)
{
CGPathAddLines (handle, ref m, points, points.Length);
}
extern static void CGPathAddRelativeArc(IntPtr path, ref CGAffineTransform m, float x, float y, float radius, float startAngle, float delta);
extern static void CGPathAddArc(IntPtr path, ref CGAffineTransform m, float x, float y, float radius, float startAngle, float endAngle, bool clockwise);
public void AddRelativeArc(CGAffineTransform m, float x, float y, float radius, float startAngle, float delta)
{
CGPathAddRelativeArc(handle, ref m, x, y, radius, startAngle, delta);
}
extern static void CGPathAddPath(IntPtr path1, ref CGAffineTransform m, IntPtr path2);
public void AddRect(CGAffineTransform transform, RectangleF rect)
{
CGPathAddRect(handle, ref transform, rect);
}
public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format = null)
{
if (font == null)
throw new ArgumentNullException ("font");
if (brush == null)
throw new ArgumentNullException ("brush");
if (s == null || s.Length == 0)
return;
if (format == null)
{
format = StringFormat.GenericDefault;
}
// TODO: Take into consideration units
// Not sure we need the Save and Restore around this yet.
context.SaveState();
// TextMatrix is not part of the Graphics State and Restore
var saveMatrix = context.TextMatrix;
bool layoutAvailable = true;
// context.SelectFont ( font.nativeFont.PostScriptName,
// font.SizeInPoints,
// CGTextEncoding.MacRoman);
//
// context.SetCharacterSpacing(1);
// context.SetTextDrawingMode(CGTextDrawingMode.Fill); // 5
//
// // Setup both the stroke and the fill ?
// brush.Setup(this, true);
// brush.Setup(this, false);
//
// var textMatrix = font.nativeFont.Matrix;
//
// textMatrix.Scale(1,-1);
// context.TextMatrix = textMatrix;
//
// context.ShowTextAtPoint(layoutRectangle.X,
// layoutRectangle.Y + font.nativeFont.CapHeightMetric, s);
//
//
// First we call the brush with a fill of false so the brush can setup the stroke color
// that the text will be using.
// For LinearGradientBrush this will setup a TransparentLayer so the gradient can
// be filled at the end. See comments.
brush.Setup(this, false); // Stroke
// I think we only Fill the text with no Stroke surrounding
context.SetTextDrawingMode(CGTextDrawingMode.Fill);
var attributedString = buildAttributedString(s, font, format, lastBrushColor);
// Work out the geometry
RectangleF insetBounds = layoutRectangle;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Width = boundingBox.Width;
insetBounds.Height = boundingBox.Height;
layoutAvailable = false;
}
PointF textPosition = new PointF(insetBounds.X,
insetBounds.Y);
float boundsWidth = insetBounds.Width;
// Calculate the lines
int start = 0;
int length = attributedString.Length;
float baselineOffset = 0;
var typesetter = new CTTypesetter(attributedString);
// First we need to calculate the offset for Vertical Alignment if we
// are using anything but Top
if (layoutAvailable && format.LineAlignment != StringAlignment.Near) {
while (start < length) {
int count = typesetter.SuggestLineBreak (start, boundsWidth);
var line = typesetter.GetLine (new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
line.GetTypographicBounds (out ascent, out descent, out leading);
baselineOffset += (float)Math.Ceiling (ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose ();
start += count;
}
//textPosition.Y += baselineOffset;
}
// If we are drawing vertial direction then we need to rotate our context transform by 90 degrees
if ((format.FormatFlags & StringFormatFlags.DirectionVertical) == StringFormatFlags.DirectionVertical)
{
//textMatrix.Rotate (ConversionHelpers.DegreesToRadians (90));
var verticalOffset = 0.0f;
while (start < length) {
int count = typesetter.SuggestLineBreak (start, boundsWidth);
var line = typesetter.GetLine (new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
line.GetTypographicBounds (out ascent, out descent, out leading);
verticalOffset += (float)Math.Ceiling (ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose ();
start += count;
}
context.TranslateCTM (layoutRectangle.X, layoutRectangle.Y);
context.RotateCTM (ConversionHelpers.DegreesToRadians (90));
context.TranslateCTM (-layoutRectangle.X, -layoutRectangle.Y);
context.TranslateCTM (0, -verticalOffset);
start = 0;
}
start = 0;
while (start < length && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
double lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
// Calculate the string format if need be
var penFlushness = 0.0f;
if (format != null)
{
if (layoutAvailable)
{
if (format.Alignment == StringAlignment.Far)
penFlushness = (float)line.GetPenOffsetForFlush(1.0f, boundsWidth);
else if (format.Alignment == StringAlignment.Center)
penFlushness = (float)line.GetPenOffsetForFlush(0.5f, boundsWidth);
}
else
{
// We were only passed in a point so we need to format based
// on the point.
if (format.Alignment == StringAlignment.Far)
penFlushness -= (float)lineWidth;
else if (format.Alignment == StringAlignment.Center)
penFlushness -= (float)lineWidth / 2.0f;
}
}
// initialize our Text Matrix or we could get trash in here
var textMatrix = new CGAffineTransform (
1, 0, 0, -1, 0, ascent);
if (format.LineAlignment == StringAlignment.Near)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y);
if (format.LineAlignment == StringAlignment.Center)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height / 2) - (baselineOffset / 2)) );
if (format.LineAlignment == StringAlignment.Far)
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height) - (baselineOffset)));
context.TextMatrix = textMatrix;
// and draw the line
line.Draw(context);
// Move the index beyond the line break.
start += count;
textPosition.Y += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
}
// Now we call the brush with a fill of true so the brush can do the fill if need be
// For LinearGradientBrush this will draw the Gradient and end the TransparentLayer.
// See comments.
brush.Setup(this, true); // Fill
context.TextMatrix = saveMatrix;
context.RestoreState();
}
//bool _highQuality = false;
static CoreGraphicsGraphics()
{
//foreach (var f in UIFont.FamilyNames) {
// Console.WriteLine (f);
// var fs = UIFont.FontNamesForFamilyName (f);
// foreach (var ff in fs) {
// Console.WriteLine (" " + ff);
// }
//}
_textMatrix = CGAffineTransform.MakeScale (1, -1);
}
public void AddCurveToPoint(CGAffineTransform transform, PointF cp1, PointF cp2, PointF point)
{
CGPathAddCurveToPoint(handle, ref transform, cp1.X, cp1.Y, cp2.X, cp2.Y, point.X, point.Y);
}
public void CGPathAddLineToPoint (CGAffineTransform transform, float x, float y)
{
CGPathAddLineToPoint (handle, ref transform, x, y);
}
extern static void CGPathAddPath(IntPtr path1, ref CGAffineTransform m, IntPtr path2);
extern static void CGPathAddRects(IntPtr path, ref CGAffineTransform m, RectangleF [] rects, int size_t_count);
extern static void CGContextSetTextMatrix(IntPtr c, CGAffineTransform t);
extern static bool CGPathContainsPoint(IntPtr path, ref CGAffineTransform m, PointF point, bool eoFill);
extern static void CGPathAddLineToPoint(IntPtr path, ref CGAffineTransform m, float x, float y);
public bool ContainsPoint(CGAffineTransform m, PointF point, bool eoFill)
{
return(CGPathContainsPoint(handle, ref m, point, eoFill));
}
extern static void CGPathAddCurveToPoint(IntPtr path, ref CGAffineTransform m, float cp1x, float cp1y, float cp2x, float cp2y, float x, float y);
extern static IntPtr CGPathCreateCopyByDashingPath(IntPtr handle, ref CGAffineTransform transform, float [] phase, int count);
public void AddRect (CGAffineTransform transform, RectangleF rect)
{
CGPathAddRect (handle, ref transform, rect);
}
public CGPath CopyByDashingPath(CGAffineTransform transform, float [] phase)
{
return(MakeMutable(CGPathCreateCopyByDashingPath(handle, ref transform, phase, phase == null ? 0 : phase.Length)));
}
public void AddRects (CGAffineTransform m, RectangleF [] rects)
{
CGPathAddRects (handle, ref m, rects, rects.Length);
}
extern static IntPtr CGPathCreateCopyByStrokingPath(IntPtr handle, ref CGAffineTransform transform, float lineWidth, CGLineCap lineCap, CGLineJoin lineJoin, float miterLimit);
extern static void CGPathAddLines(IntPtr path, ref CGAffineTransform m, PointF [] points, int size_t_count);
public CGPath CopyByStrokingPath(CGAffineTransform transform, float lineWidth, CGLineCap lineCap, CGLineJoin lineJoin, float miterLimit)
{
return(MakeMutable(CGPathCreateCopyByStrokingPath(handle, ref transform, lineWidth, lineCap, lineJoin, miterLimit)));
}
public void AddRects (CGAffineTransform m, PointF [] points, int count)
{
if (count > points.Length)
throw new ArgumentException ("count");
CGPathAddLines (handle, ref m, points, count);
}
extern static IntPtr CGPathCreateMutableCopyByTransformingPath(IntPtr handle, ref CGAffineTransform transform);
public void AddElipseInRect (CGAffineTransform m, RectangleF rect)
{
CGPathAddEllipseInRect (handle, ref m, rect);
}
static public CGPath EllipseFromRect(RectangleF boundingRect, CGAffineTransform transform)
{
return(MakeMutable(CGPathCreateWithEllipse(boundingRect, ref transform)));
}
public void AddArc (CGAffineTransform m, float x, float y, float radius, float startAngle, float endAngle, bool clockwise)
{
CGPathAddArc (handle, ref m, x, y, radius, startAngle, endAngle, clockwise);
}
extern static IntPtr CGPathCreateWithRect(RectangleF boundingRect, ref CGAffineTransform transform);
public void AddArcToPoint (CGAffineTransform m, float x1, float y1, float x2, float y2, float radius)
{
CGPathAddArcToPoint (handle, ref m, x1, y1, x2, y2, radius);
}
static public CGPath FromRect(RectangleF rectangle, CGAffineTransform transform)
{
return(MakeMutable(CGPathCreateWithRect(rectangle, ref transform)));
}
public void AddPath (CGAffineTransform t, CGPath path2)
{
if (path2 == null)
throw new ArgumentNullException ("path2");
CGPathAddPath (handle, ref t, path2.handle);
}
static extern IntPtr CTFontCreateWithGraphicsFont(IntPtr graphicsFont, float size, ref CGAffineTransform matrix, IntPtr attributes);
public bool ContainsPoint (CGAffineTransform m, PointF point, bool eoFill)
{
return CGPathContainsPoint (handle, ref m, point, eoFill);
}
public CTFont ToCTFont(float size, ref CGAffineTransform matrix)
{
return(new CTFont(CTFontCreateWithGraphicsFont(handle, size, ref matrix, IntPtr.Zero), true));
}
internal void NativeDrawString(string s, Font font, Color brush, RectangleF layoutRectangle, StringFormat stringFormat)
{
if (font == null)
throw new ArgumentNullException ("font");
if (s == null || s.Length == 0)
return;
var attributedString = buildAttributedString(s, font, brush);
// Work out the geometry
RectangleF insetBounds = layoutRectangle;
bool layoutAvailable = true;
if (insetBounds.Size == SizeF.Empty)
{
insetBounds.Size = new SizeF (8388608, 8388608);
layoutAvailable = false;
}
PointF textPosition = new PointF(insetBounds.X,
insetBounds.Y);
float boundsWidth = insetBounds.Width;
// Calculate the lines
int start = 0;
int length = attributedString.Length;
var typesetter = new CTTypesetter(attributedString);
float baselineOffset = 0;
// First we need to calculate the offset for Vertical Alignment if we
// are using anything but Top
if (layoutAvailable && stringFormat.LineAlignment != StringAlignment.Near) {
while (start < length) {
int count = typesetter.SuggestLineBreak (start, boundsWidth);
var line = typesetter.GetLine (new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
line.GetTypographicBounds (out ascent, out descent, out leading);
baselineOffset += (float)Math.Ceiling (ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose ();
start += count;
}
}
start = 0;
while (start < length && textPosition.Y < insetBounds.Bottom)
{
// Now we ask the typesetter to break off a line for us.
// This also will take into account line feeds embedded in the text.
// Example: "This is text \n with a line feed embedded inside it"
int count = typesetter.SuggestLineBreak(start, boundsWidth);
var line = typesetter.GetLine(new NSRange(start, count));
// Create and initialize some values from the bounds.
float ascent;
float descent;
float leading;
double lineWidth = line.GetTypographicBounds(out ascent, out descent, out leading);
if (!layoutAvailable)
{
insetBounds.Width = (float)lineWidth;
insetBounds.Height = ascent + descent + leading;
}
// Calculate the string format if need be
var penFlushness = 0.0f;
if (stringFormat.Alignment == StringAlignment.Far)
penFlushness = (float)line.GetPenOffsetForFlush(1.0f, insetBounds.Width);
else if (stringFormat.Alignment == StringAlignment.Center)
penFlushness = (float)line.GetPenOffsetForFlush(0.5f, insetBounds.Width);
// initialize our Text Matrix or we could get trash in here
var textMatrix = new CGAffineTransform (
1, 0, 0, -1, 0, ascent);
if (stringFormat.LineAlignment == StringAlignment.Near)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y); //insetBounds.Height - textPosition.Y -(float)Math.Floor(ascent - 1));
if (stringFormat.LineAlignment == StringAlignment.Center)
textMatrix.Translate (penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height / 2) - (baselineOffset / 2)) ); // -(float)Math.Floor(ascent)
if (stringFormat.LineAlignment == StringAlignment.Far)
textMatrix.Translate(penFlushness + textPosition.X, textPosition.Y + ((insetBounds.Height) - (baselineOffset)));
var glyphRuns = line.GetGlyphRuns ();
for (int glyphRunIndex = 0; glyphRunIndex < glyphRuns.Length; glyphRunIndex++)
{
var glyphRun = glyphRuns [glyphRunIndex];
var glyphs = glyphRun.GetGlyphs ();
var glyphPositions = glyphRun.GetPositions ();
//var textMatrix = glyphRun.TextMatrix;
// Create and initialize some values from the bounds.
float glyphAscent;
float glyphDescent;
float glyphLeading;
var elementPoints = new PointF[3];
for (int glyphIndex = 0; glyphIndex < glyphs.Length; glyphIndex++)
{
if (glyphIndex > 0)
{
textMatrix.x0 += glyphPositions [glyphIndex].X - glyphPositions[glyphIndex - 1].X;
textMatrix.y0 += glyphPositions [glyphIndex].Y - glyphPositions[glyphIndex - 1].Y;
}
var glyphPath = font.nativeFont.GetPathForGlyph (glyphs [glyphIndex]);
// glyphPath = null if it is a white space character
if (glyphPath != null) {
glyphPath.Apply (
delegate (CGPathElement pathElement) {
elementPoints[0] = textMatrix.TransformPoint(pathElement.Point1);
elementPoints[1] = textMatrix.TransformPoint(pathElement.Point2);
elementPoints[2] = textMatrix.TransformPoint(pathElement.Point3);
//Console.WriteLine ("Applying {0} - {1}, {2}, {3}", pathElement.Type, elementPoints[0], elementPoints[1], elementPoints[2]);
// now add position offsets
switch(pathElement.Type)
{
case CGPathElementType.MoveToPoint:
start_new_fig = true;
Append(elementPoints[0].X, elementPoints[0].Y,PathPointType.Line,true);
break;
case CGPathElementType.AddLineToPoint:
var lastPoint = points[points.Count - 1];
AppendPoint(lastPoint, PathPointType.Line, false);
AppendPoint(elementPoints[0], PathPointType.Line, false);
break;
case CGPathElementType.AddCurveToPoint:
case CGPathElementType.AddQuadCurveToPoint:
// This is the only thing I can think of right now for the fonts that
// I have tested. See the description of the quadraticToCubic method for
// more information
// Get the last point
var pt1 = points[points.Count - 1];
var pt2 = PointF.Empty;
var pt3 = PointF.Empty;
var pt4 = elementPoints[1];
GeomUtilities.QuadraticToCubic(pt1, elementPoints[0], elementPoints[1], out pt2, out pt3);
Append (pt1.X, pt1.Y, PathPointType.Line, true);
AppendBezier (pt2.X, pt2.Y, pt3.X, pt3.Y, pt4.X, pt4.Y);
break;
case CGPathElementType.CloseSubpath:
CloseFigure();
break;
}
}
);
}
}
}
// Move the index beyond the line break.
start += count;
textPosition.Y += (float)Math.Ceiling(ascent + descent + leading + 1); // +1 matches best to CTFramesetter's behavior
line.Dispose();
}
}
public void AddLineToPoint(CGAffineTransform transform, PointF point)
{
CGPathAddLineToPoint(handle, ref transform, point.X, point.Y);
}
