private Paint GetBrushPaint(BaseBrush brush, Rect frame)
{
var paint = new Paint(PaintFlags.AntiAlias);
AddBrushPaint(paint, brush, frame);
return(paint);
}
public void RectInflate()
{
var r = new Rect (new Size (10, 20));
r.Inflate (4, 6);
Assert.AreEqual (-4, r.X);
Assert.AreEqual (-6, r.Y);
Assert.AreEqual (18, r.Width);
Assert.AreEqual (32, r.Height);
}
public void DrawEllipse(Rect frame, Pen pen = null, BaseBrush brush = null)
{
if (brush != null)
{
var paint = GetBrushPaint(brush, frame);
graphics.DrawOval(frame.GetRectF(), paint);
}
if (pen != null)
{
var paint = GetPenPaint(pen);
graphics.DrawOval(frame.GetRectF(), paint);
}
}
public void DrawRectangle(Rect frame, Pen pen = null, BaseBrush brush = null)
{
if (brush != null)
{
var paint = GetBrushPaint(brush, frame);
graphics.DrawRect((float)(frame.X), (float)(frame.Y), (float)(frame.X + frame.Width),
(float)(frame.Y + frame.Height), paint);
}
if (pen != null)
{
var paint = GetPenPaint(pen);
graphics.DrawRect((float)(frame.X), (float)(frame.Y), (float)(frame.X + frame.Width),
(float)(frame.Y + frame.Height), paint);
}
}
public void DrawImage(IImage image, Rect frame, double alpha = 1.0)
{
var ii = image as BitmapImage;
if (ii != null)
{
var paint = GetImagePaint(alpha);
var isize = new Size(ii.Bitmap.Width, ii.Bitmap.Height);
var scale = frame.Size / isize;
var m = new Matrix();
m.PreTranslate((float)frame.X, (float)frame.Y);
m.PreScale((float)scale.Width, (float)scale.Height);
graphics.DrawBitmap(ii.Bitmap, m, paint);
}
}
public async Task EllipseRadialGradient()
{
var canvas = Platforms.Current.CreateImageCanvas(new Size(100));
var rect = new Rect(0, 10, 100, 80);
var brush = new RadialGradientBrush(
new Point(0.5, 0.5),
new Size(0.5, 0.125),
Colors.Green,
Colors.LightGray);
canvas.DrawEllipse(rect, brush: brush);
await SaveImage(canvas, "Brush.EllipseRadialGradient.png");
}
public async Task RectLinearGradient()
{
var canvas = Platforms.Current.CreateImageCanvas(new Size(100));
var rect = new Rect(0, 10, 100, 80);
var brush = new LinearGradientBrush(
Point.Zero,
Point.OneY,
Colors.Green,
Colors.LightGray);
canvas.DrawRectangle(rect, brush: brush);
await SaveImage(canvas, "Brush.RectLinearGradient.png");
}
public async Task RectAbsLinearGradient()
{
var canvas = Platforms.Current.CreateImageCanvas(new Size(100));
var rect = new Rect(0, 10, 100, 80);
var brush = new LinearGradientBrush(
Point.Zero,
new Point(0, 200),
Colors.Yellow,
Colors.Red);
brush.Absolute = true;
canvas.DrawRectangle(rect, brush: brush);
await SaveImage(canvas, "Brush.RectAbsLinearGradient.png");
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left,
Pen pen = null, BaseBrush brush = null)
{
if (brush == null)
{
return;
}
var paint = GetFontPaint(font, alignment);
var w = paint.MeasureText(text);
var fm = paint.GetFontMetrics();
var h = fm.Ascent + fm.Descent;
var point = frame.Position;
var fr = new Rect(point, new Size(w, h));
AddBrushPaint(paint, brush, fr);
graphics.DrawText(text, (float)point.X, (float)point.Y, paint);
}
public async Task HSL()
{
// http://en.wikipedia.org/wiki/HSL_and_HSV#Examples
var tests = new[] {
Tuple.Create (new Color (1.000, 1.000, 1.000), Color.FromHSL ( 0.0/360.0, 0.000, 1.000)),
Tuple.Create (new Color (0.500, 0.500, 0.500), Color.FromHSL ( 0.0/360.0, 0.000, 0.500)),
Tuple.Create (new Color (0.000, 0.000, 0.000), Color.FromHSL ( 0.0/360.0, 0.000, 0.000)),
Tuple.Create (new Color (1.000, 0.000, 0.000), Color.FromHSL ( 0.0/360.0, 1.000, 0.500)),
Tuple.Create (new Color (0.750, 0.750, 0.000), Color.FromHSL ( 60.0/360.0, 1.000, 0.375)),
Tuple.Create (new Color (0.000, 0.500, 0.000), Color.FromHSL (120.0/360.0, 1.000, 0.250)),
Tuple.Create (new Color (0.500, 1.000, 1.000), Color.FromHSL (180.0/360.0, 1.000, 0.750)),
Tuple.Create (new Color (0.500, 0.500, 1.000), Color.FromHSL (240.0/360.0, 1.000, 0.750)),
Tuple.Create (new Color (0.750, 0.250, 0.750), Color.FromHSL (300.0/360.0, 0.500, 0.500)),
Tuple.Create (new Color (0.628, 0.643, 0.142), Color.FromHSL ( 61.8/360.0, 0.638, 0.393)),
Tuple.Create (new Color (0.255, 0.104, 0.918), Color.FromHSL (251.1/360.0, 0.832, 0.511)),
Tuple.Create (new Color (0.116, 0.675, 0.255), Color.FromHSL (134.9/360.0, 0.707, 0.396)),
Tuple.Create (new Color (0.941, 0.785, 0.053), Color.FromHSL ( 49.5/360.0, 0.893, 0.497)),
Tuple.Create (new Color (0.704, 0.187, 0.897), Color.FromHSL (283.7/360.0, 0.775, 0.542)),
Tuple.Create (new Color (0.931, 0.463, 0.316), Color.FromHSL ( 14.3/360.0, 0.817, 0.624)),
Tuple.Create (new Color (0.998, 0.974, 0.532), Color.FromHSL ( 56.9/360.0, 0.991, 0.765)),
Tuple.Create (new Color (0.099, 0.795, 0.591), Color.FromHSL (162.4/360.0, 0.779, 0.447)),
Tuple.Create (new Color (0.211, 0.149, 0.597), Color.FromHSL (248.3/360.0, 0.601, 0.373)),
Tuple.Create (new Color (0.495, 0.493, 0.721), Color.FromHSL (240.5/360.0, 0.290, 0.607)),
};
var s = 32;
var canvas = Platforms.Current.CreateImageCanvas(new Size(s * tests.Length, s));
foreach (var t in tests)
{
var rect = new Rect(0, 0, s, s);
canvas.FillRectangle(rect, t.Item2);
canvas.Translate(s, 0);
AssertInRange(t.Item2.R, t.Item1.R - 1, t.Item1.R + 1);
AssertInRange(t.Item2.G, t.Item1.G - 1, t.Item1.G + 1);
AssertInRange(t.Item2.B, t.Item1.B - 1, t.Item1.B + 1);
}
await SaveImage(canvas, "Color.HSL.png");
}
public void DrawRectangle(Rect frame, Pen pen = null, BaseBrush baseBrush = null)
{
if (pen == null && baseBrush == null)
return;
DrawElement (() => {
context.AddRect (Conversions.GetCGRect (frame));
return frame;
}, pen, baseBrush);
}
private Rect ReadRectangle(string s)
{
var r = new Rect();
var p = s.Split(WS, StringSplitOptions.RemoveEmptyEntries);
if (p.Length > 0)
r.X = _valuesParser.ReadNumber(p[0]);
if (p.Length > 1)
r.Y = _valuesParser.ReadNumber(p[1]);
if (p.Length > 2)
r.Width = _valuesParser.ReadNumber(p[2]);
if (p.Length > 3)
r.Height = _valuesParser.ReadNumber(p[3]);
return r;
}
private void AddBrushPaint(Paint paint, BaseBrush brush, Rect frame)
{
paint.SetStyle(Paint.Style.Fill);
var sb = brush as SolidBrush;
if (sb != null)
{
paint.SetARGB(sb.Color.A, sb.Color.R, sb.Color.G, sb.Color.B);
return;
}
var lgb = brush as LinearGradientBrush;
if (lgb != null)
{
var n = lgb.Stops.Count;
if (n >= 2)
{
var locs = new float[n];
var comps = new int[n];
for (var i = 0; i < n; i++)
{
var s = lgb.Stops[i];
locs[i] = (float) s.Offset;
comps[i] = s.Color.Argb;
}
var p1 = lgb.Absolute ? lgb.Start : frame.Position + lgb.Start*frame.Size;
var p2 = lgb.Absolute ? lgb.End : frame.Position + lgb.End*frame.Size;
var lg = new LinearGradient(
(float) p1.X, (float) p1.Y,
(float) p2.X, (float) p2.Y,
comps,
locs,
Shader.TileMode.Clamp);
paint.SetShader(lg);
}
return;
}
var rgb = brush as RadialGradientBrush;
if (rgb != null)
{
var n = rgb.Stops.Count;
if (n >= 2)
{
var locs = new float[n];
var comps = new int[n];
for (var i = 0; i < n; i++)
{
var s = rgb.Stops[i];
locs[i] = (float) s.Offset;
comps[i] = s.Color.Argb;
}
var p1 = rgb.GetAbsoluteCenter(frame);
var r = rgb.GetAbsoluteRadius(frame);
var rg = new RadialGradient(
(float) p1.X, (float) p1.Y,
(float) r.Max,
comps,
locs,
Shader.TileMode.Clamp);
paint.SetShader(rg);
}
return;
}
throw new NotSupportedException("Brush " + brush);
}
public void DrawRectangle(Rect frame, Pen pen = null, BaseBrush brush = null)
{
if (brush != null)
{
var paint = GetBrushPaint(brush, frame);
graphics.DrawRect((float) (frame.X), (float) (frame.Y), (float) (frame.X + frame.Width),
(float) (frame.Y + frame.Height), paint);
}
if (pen != null)
{
var paint = GetPenPaint(pen);
graphics.DrawRect((float) (frame.X), (float) (frame.Y), (float) (frame.X + frame.Width),
(float) (frame.Y + frame.Height), paint);
}
}
public void DrawEllipse(Rect frame, Pen pen = null, BaseBrush brush = null)
{
if (brush != null)
{
var paint = GetBrushPaint(brush, frame);
graphics.DrawOval(frame.GetRectF(), paint);
}
if (pen != null)
{
var paint = GetPenPaint(pen);
graphics.DrawOval(frame.GetRectF(), paint);
}
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, BaseBrush brush = null)
{
}
public void DrawImage(IImage image, Rect frame, double alpha = 1.0)
{
}
private void AddBrushPaint(Paint paint, BaseBrush brush, Rect frame)
{
paint.SetStyle(Paint.Style.Fill);
var sb = brush as SolidBrush;
if (sb != null)
{
paint.SetARGB(sb.Color.A, sb.Color.R, sb.Color.G, sb.Color.B);
return;
}
var lgb = brush as LinearGradientBrush;
if (lgb != null)
{
var n = lgb.Stops.Count;
if (n >= 2)
{
var locs = new float[n];
var comps = new int[n];
for (var i = 0; i < n; i++)
{
var s = lgb.Stops[i];
locs[i] = (float)s.Offset;
comps[i] = s.Color.Argb;
}
var p1 = lgb.Absolute ? lgb.Start : frame.Position + lgb.Start * frame.Size;
var p2 = lgb.Absolute ? lgb.End : frame.Position + lgb.End * frame.Size;
var lg = new LinearGradient(
(float)p1.X, (float)p1.Y,
(float)p2.X, (float)p2.Y,
comps,
locs,
Shader.TileMode.Clamp);
paint.SetShader(lg);
}
return;
}
var rgb = brush as RadialGradientBrush;
if (rgb != null)
{
var n = rgb.Stops.Count;
if (n >= 2)
{
var locs = new float[n];
var comps = new int[n];
for (var i = 0; i < n; i++)
{
var s = rgb.Stops[i];
locs[i] = (float)s.Offset;
comps[i] = s.Color.Argb;
}
var p1 = rgb.GetAbsoluteCenter(frame);
var r = rgb.GetAbsoluteRadius(frame);
var rg = new RadialGradient(
(float)p1.X, (float)p1.Y,
(float)r.Max,
comps,
locs,
Shader.TileMode.Clamp);
paint.SetShader(rg);
}
return;
}
throw new NotSupportedException("Brush " + brush);
}
public Rect MoveInto(Rect frame)
{
var r = this;
if (r.Right > frame.Right)
r.X = frame.Right - r.Width;
if (r.X < frame.X) r.X = frame.X;
if (r.Bottom > frame.Bottom)
r.Y = frame.Bottom - r.Height;
if (r.Y < frame.Y) r.Y = frame.Y;
return r;
}
public static void StrokeRectangle(this ICanvas canvas, Rect frame, Color color, double width = 1.0)
{
canvas.DrawRectangle(frame, pen: new Pen(color, width));
}
public static void FillRectangle(this ICanvas canvas, Rect frame, BaseBrush brush)
{
canvas.DrawRectangle(frame, brush: brush);
}
public static void FillRectangle(this ICanvas canvas, Rect frame, Color color)
{
canvas.DrawRectangle(frame, brush: new SolidBrush(color));
}
public static void FillEllipse(this ICanvas canvas, Rect frame, BaseBrush brush)
{
canvas.DrawEllipse(frame, brush: brush);
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, BaseBrush brush = null)
{
if (string.IsNullOrEmpty (text))
return;
if (font == null)
throw new ArgumentNullException ("font");
SetBrush (brush);
string fontName = font.Name;
Array availableFonts =
#if __IOS__
UIKit.UIFont.FontNamesForFamilyName(fontName);
#else
AppKit.NSFontManager.SharedFontManager.AvailableMembersOfFontFamily (fontName).ToArray ();
#endif
if (availableFonts != null && availableFonts.Length > 0)
context.SelectFont (font.Name, (nfloat)font.Size, CGTextEncoding.MacRoman);
else
context.SelectFont ("Georgia", (nfloat)font.Size, CGTextEncoding.MacRoman);
context.ShowTextAtPoint ((nfloat)frame.X, (nfloat)frame.Y, text);
// using (var atext = new NSMutableAttributedString (text)) {
//
// atext.AddAttributes (new CTStringAttributes {
// ForegroundColor = new CGColor (1, 0, 0, 1),
// }, new NSRange (0, text.Length));
//
// using (var ct = new CTFramesetter (atext))
// using (var path = CGPath.FromRect (Conversions.GetCGRect (frame)))
// using (var tframe = ct.GetFrame (new NSRange (0, atext.Length), path, null))
// tframe.Draw (context);
// }
}
public SurfaceImageSourceCanvas(SurfaceImageSource surfaceImageSource, Rect updateRect, Direct2DFactories factories = null)
: base(factories)
{
sisn = ComObject.As<DXGI.ISurfaceImageSourceNative> (surfaceImageSource);
SharpDX.Point offset;
var surface = sisn.BeginDraw (updateRect.ToRectangle (), out offset);
var dpi = 96.0;
var properties = new D2D1.RenderTargetProperties (D2D1.RenderTargetType.Default, new D2D1.PixelFormat (DXGI.Format.Unknown, D2D1.AlphaMode.Unknown), (float)(dpi), (float)(dpi), D2D1.RenderTargetUsage.None, D2D1.FeatureLevel.Level_DEFAULT);
Initialize (new D2D1.RenderTarget (this.factories.D2DFactory, surface, properties));
}
public static CGRect GetCGRect(Rect frame)
{
return new CGRect ((nfloat)frame.X, (nfloat)frame.Y, (nfloat)frame.Width, (nfloat)frame.Height);
}
D2D1.Brush GetBrush(Rect frame, BaseBrush brush)
{
if (brush == null) return null;
var sb = brush as SolidBrush;
if (sb != null) {
return new D2D1.SolidColorBrush (renderTarget, sb.Color.ToColor4 ());
}
var lgb = brush as LinearGradientBrush;
if (lgb != null) {
if (lgb.Stops.Count < 2) return null;
var props = new D2D1.LinearGradientBrushProperties {
StartPoint = lgb.GetAbsoluteStart (frame).ToVector2 (),
EndPoint = lgb.GetAbsoluteEnd (frame).ToVector2 (),
};
return new D2D1.LinearGradientBrush (renderTarget, props, GetStops (lgb.Stops));
}
var rgb = brush as RadialGradientBrush;
if (rgb != null) {
if (rgb.Stops.Count < 2) return null;
var rad = rgb.GetAbsoluteRadius (frame);
var center = rgb.GetAbsoluteCenter (frame);
var focus = rgb.GetAbsoluteFocus (frame);
var props = new D2D1.RadialGradientBrushProperties {
Center = center.ToVector2 (),
RadiusX = (float)rad.Width,
RadiusY = (float)rad.Height,
GradientOriginOffset = (focus - center).ToVector2 (),
};
return new D2D1.RadialGradientBrush (renderTarget, props, GetStops (rgb.Stops));
}
// TODO: Radial gradient brushes
return new D2D1.SolidColorBrush (renderTarget, Colors.Black.ToColor4 ());
}
public void DrawRectangle(Rect frame, Pen pen = null, BaseBrush brush = null)
{
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left, Pen pen = null, BaseBrush brush = null)
{
var layout = new DW.TextLayout (factories.DWFactory, text, GetTextFormat (font), (float)frame.Width, (float)frame.Height);
var h = layout.Metrics.Height;
//todo : : Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
//renderTarget.DrawTextLayout ((frame.TopLeft - h*Point.OneY.Y).ToVector2 (), layout, GetBrush (frame, brush));
}
public void DrawEllipse(Rect frame, Pen pen = null, BaseBrush brush = null)
{
}
public void DrawRectangle(Rect frame, Pen pen = null, BaseBrush brush = null)
{
var p = GetBrush (pen);
var b = GetBrush (frame, brush);
if (b != null) {
renderTarget.FillRectangle (frame.ToRectangleF (), b);
}
if (p != null) {
renderTarget.DrawRectangle (frame.ToRectangleF (), p, (float)pen.Width, GetStrokeStyle (pen));
}
}
public void DrawImage(IImage image, Rect frame, double alpha = 1.0)
{
var ii = image as BitmapImage;
if (ii != null)
{
var paint = GetImagePaint(alpha);
var isize = new Size(ii.Bitmap.Width, ii.Bitmap.Height);
var scale = frame.Size/isize;
var m = new Matrix();
m.PreTranslate((float) frame.X, (float) frame.Y);
m.PreScale((float) scale.Width, (float) scale.Height);
graphics.DrawBitmap(ii.Bitmap, m, paint);
}
}
public static RectF GetRectF(this Rect frame)
{
return(new RectF((float)frame.X, (float)frame.Y, (float)(frame.X + frame.Width),
(float)(frame.Y + frame.Height)));
}
public void DrawText(string text, Rect frame, Font font, TextAlignment alignment = TextAlignment.Left,
Pen pen = null, BaseBrush brush = null)
{
if (brush == null)
return;
var paint = GetFontPaint(font, alignment);
var w = paint.MeasureText(text);
var fm = paint.GetFontMetrics();
var h = fm.Ascent + fm.Descent;
var point = frame.Position;
var fr = new Rect(point, new Size(w, h));
AddBrushPaint(paint, brush, fr);
graphics.DrawText(text, (float) point.X, (float) point.Y, paint);
}
public void DrawImage(IImage image, Rect frame, double alpha = 1.0)
{
var cgi = image as CGImageImage;
if (cgi != null) {
var i = cgi.Image;
var h = frame.Height;
context.SaveState ();
context.TranslateCTM ((nfloat)frame.X, (nfloat)(h + frame.Y));
context.ScaleCTM (1, -1);
context.DrawImage (new CGRect (0, 0, (nfloat)frame.Width, (nfloat)frame.Height), cgi.Image);
context.RestoreState ();
}
}
private Paint GetBrushPaint(BaseBrush brush, Rect frame)
{
var paint = new Paint(PaintFlags.AntiAlias);
AddBrushPaint(paint, brush, frame);
return paint;
}
private void Read(XDocument doc)
{
var svg = doc.Root;
var ns = svg.Name.Namespace;
//
// Find the defs (gradients)
//
foreach (var d in svg.Descendants())
{
var idA = d.Attribute("id");
if (idA != null)
{
defs[ReadString(idA).Trim()] = d;
}
}
//
// Get the dimensions
//
var widthA = svg.Attribute("width");
var heightA = svg.Attribute("height");
var width = _valuesParser.ReadNumber(widthA);
var height = _valuesParser.ReadNumber(heightA);
var size = new Size(width, height);
var viewBox = new Rect(size);
var viewBoxA = svg.Attribute("viewBox") ?? svg.Attribute("viewPort");
if (viewBoxA != null)
{
viewBox = ReadRectangle(viewBoxA.Value);
}
if (widthA != null && widthA.Value.Contains("%"))
{
size.Width *= viewBox.Width;
}
if (heightA != null && heightA.Value.Contains("%"))
{
size.Height *= viewBox.Height;
}
//
// Add the elements
//
Graphic = new Graphic(size, viewBox);
AddElements(Graphic.Children, svg.Elements(), null, null);
}
