Android GeometryContext

src/android/framework/GeometryContext.java

@@ -4,20 +4,257 @@
 //-------------------------------------------------------------------------------------------------------
 package Windows.UI.Xaml.Controls;
 
+import android.graphics.PointF;
+
 public class GeometryContext {
-  PathGeometry _pathGeometry;
+    PathGeometry _pathGeometry;
+    PathFigureCollection _figures;
+    PathFigure _currentFigure;
+    PathSegmentCollection _segments;
+    boolean _currentIsClosed;
 
-  public GeometryContext(Geometry g) {
-    _pathGeometry = (PathGeometry)g;
-  }
+    SegmentType _currentSegmentType;
+    PointCollection _currentSegmentPoints;
+    boolean _currentSegmentIsStroked;
+    boolean _currentSegmentIsSmoothJoin;
 
-  public void close() {
-    this.finishSegment();
-  }
+    FillRule s_defaultFillRule;
+    boolean s_defaultValueForPathFigureIsClosed;
+    boolean s_defaultValueForPathFigureIsFilled;
+    PointF s_defaultValueForPathFigureStartPoint;
+    boolean s_defaultValueForPathSegmentIsStroked;
+    boolean s_defaultValueForPathSegmentIsSmoothJoin;
+    boolean s_defaultValueForArcSegmentIsLargeArc;
+    SweepDirection s_defaultValueForArcSegmentSweepDirection;
+    double s_defaultValueForArcSegmentRotationAngle;
 
-  // TODO: Implement
+    public GeometryContext(Geometry g) {
+        _pathGeometry = (PathGeometry)g;
+    }
 
-  void finishSegment() {
-    // TODO: Implement
-  }
+    public void close() {
+        this.finishSegment();
+    }
+
+    void beginFigure(PointF startPoint, boolean isFilled, boolean isClosed) {
+        // Is this the first figure?
+        if (_currentFigure == null) {
+            // If so, have we allocated the collection?
+            if (_figures == null) {
+                _figures = new PathFigureCollection(null);
+                _pathGeometry.figures = _figures;
+            }
+        }
+
+        this.finishSegment();
+
+        // Clear the old reference to the segment collection
+        _segments = null;
+
+        _currentFigure = new PathFigure();
+        _currentIsClosed = isClosed;
+
+        if (startPoint.x != s_defaultValueForPathFigureStartPoint.x
+         || startPoint.y != s_defaultValueForPathFigureStartPoint.y) {
+            _currentFigure.setStartPoint(startPoint);
+        }
+
+        if (isClosed != s_defaultValueForPathFigureIsClosed) {
+            _currentFigure.setIsClosed(isClosed);
+        }
+
+        if (isFilled != s_defaultValueForPathFigureIsFilled) {
+            _currentFigure.setIsFilled(isFilled);
+        }
+
+        _figures.add(_currentFigure);
+
+        _currentSegmentType = SegmentType.None;
+    }
+
+    void lineTo(PointF point, boolean isStroked, boolean isSmoothJoin) {
+        this.prepareToAddPoints(1, isStroked, isSmoothJoin, SegmentType.PolyLine);
+        _currentSegmentPoints.add(point);
+    }
+
+    void quadraticBezierTo(PointF point1, PointF point2, boolean isStroked, boolean isSmoothJoin) {
+        this.prepareToAddPoints(2, isStroked, isSmoothJoin, SegmentType.PolyQuadraticBezier);
+        _currentSegmentPoints.add(point1);
+        _currentSegmentPoints.add(point2);
+    }
+
+    void bezierTo(PointF point1, PointF point2, PointF point3,
+                  boolean isStroked, boolean isSmoothJoin) {
+        this.prepareToAddPoints(3, isStroked, isSmoothJoin, SegmentType.PolyBezier);
+        _currentSegmentPoints.add(point1);
+        _currentSegmentPoints.add(point2);
+        _currentSegmentPoints.add(point3);
+    }
+
+    void polyLineTo(PointF[] points, boolean isStroked, boolean isSmoothJoin) {
+        this.genericPolyTo(points, isStroked, isSmoothJoin, SegmentType.PolyLine);
+    }
+
+    void polyQuadraticBezierTo(PointF[] points, boolean isStroked, boolean isSmoothJoin) {
+        this.genericPolyTo(points, isStroked, isSmoothJoin, SegmentType.PolyQuadraticBezier);
+    }
+
+    void polyBezierTo(PointF[] points, boolean isStroked, boolean isSmoothJoin) {
+        this.genericPolyTo(points, isStroked, isSmoothJoin, SegmentType.PolyBezier);
+    }
+
+    void arcTo(PointF point, PointF size, double rotationAngle, boolean isLargeArc,
+               SweepDirection sweepDirection, boolean isStroked, boolean isSmoothJoin) {
+        this.finishSegment();
+
+        // Is this the first segment?
+        if (_segments == null) {
+            _segments = new PathSegmentCollection(null);
+            _currentFigure.setSegments(_segments);
+        }
+
+        ArcSegment segment = new ArcSegment();
+        segment.setPoint(point);
+        segment.setSize(size);
+
+        if (isLargeArc != s_defaultValueForArcSegmentIsLargeArc) {
+            segment.setIsLargeArc(isLargeArc);
+        }
+
+        if (sweepDirection != s_defaultValueForArcSegmentSweepDirection) {
+            segment.setSweepDirection(sweepDirection);
+        }
+
+        if (rotationAngle != s_defaultValueForArcSegmentRotationAngle) {
+            segment.setRotationAngle(rotationAngle);
+        }
+
+        if (isStroked != s_defaultValueForPathSegmentIsStroked) {
+            segment.setIsStroked(isStroked);
+        }
+
+        if (isSmoothJoin != s_defaultValueForPathSegmentIsSmoothJoin) {
+            segment.setIsSmoothJoin(isSmoothJoin);
+        }
+
+        _segments.add(segment);
+
+        _currentSegmentType = SegmentType.Arc;
+    }
+
+    void setClosedState(boolean isClosed) {
+        if (isClosed != _currentIsClosed) {
+            _currentFigure.setIsClosed(isClosed);
+            _currentIsClosed = isClosed;
+        }
+    }
+
+    void setFigureCount(int figureCount) {
+        // TODO: This ignores the count
+        _figures = new PathFigureCollection(null);
+        _pathGeometry.figures = _figures;
+    }
+
+    void SetSegmentCount(int segmentCount) {
+        // TODO: This ignores the count
+        _segments = new PathSegmentCollection(null);
+        _currentFigure.setSegments(_segments);
+    }
+
+    void genericPolyTo(PointF[] points, boolean isStroked, boolean isSmoothJoin, SegmentType segmentType) {
+        int count = points.length;
+        this.prepareToAddPoints(count, isStroked, isSmoothJoin, segmentType);
+
+        for (int i = 0; i < count; i++) {
+            _currentSegmentPoints.add(points[i]);
+        }
+    }
+
+    void prepareToAddPoints(int count, boolean isStroked, boolean isSmoothJoin, SegmentType segmentType) {
+        if (_currentSegmentType != segmentType ||
+            _currentSegmentIsStroked != isStroked ||
+            _currentSegmentIsSmoothJoin != isSmoothJoin) {
+            this.finishSegment();
+
+            _currentSegmentType = segmentType;
+            _currentSegmentIsStroked = isStroked;
+            _currentSegmentIsSmoothJoin = isSmoothJoin;
+        }
+
+        if (_currentSegmentPoints == null) {
+           _currentSegmentPoints = new PointCollection(null);
+        }
+    }
+
+    void finishSegment() {
+        if (_currentSegmentPoints != null) {
+            int count = _currentSegmentPoints.size();
+
+            // Is this the first segment?
+            if (_segments == null) {
+                _segments = new PathSegmentCollection(null);
+                _currentFigure.setSegments(_segments);
+            }
+
+            PathSegment segment;
+
+            switch (_currentSegmentType) {
+                case PolyLine:
+                    if (count == 1) {
+                        LineSegment lSegment = new LineSegment();
+                        lSegment.setPoint((PointF)_currentSegmentPoints.get(0));
+                        segment = lSegment;
+                    }
+                    else {
+                        PolyLineSegment pSegment = new PolyLineSegment();
+                        pSegment.setPoints(_currentSegmentPoints);
+                        segment = pSegment;
+                    }
+                    break;
+                case PolyBezier:
+                    if (count == 3) {
+                        BezierSegment bSegment = new BezierSegment();
+                        bSegment.setPoint1((PointF)_currentSegmentPoints.get(0));
+                        bSegment.setPoint2((PointF)_currentSegmentPoints.get(1));
+                        bSegment.setPoint3((PointF)_currentSegmentPoints.get(2));
+                        segment = bSegment;
+                    }
+                    else {
+                        PolyBezierSegment pSegment = new PolyBezierSegment();
+                        pSegment.setPoints(_currentSegmentPoints);
+                        segment = pSegment;
+                    }
+                    break;
+                case PolyQuadraticBezier:
+                    if (count == 2) {
+                        QuadraticBezierSegment qSegment = new QuadraticBezierSegment();
+                        qSegment.setPoint1((PointF)_currentSegmentPoints.get(0));
+                        qSegment.setPoint2((PointF)_currentSegmentPoints.get(1));
+                        segment = qSegment;
+                    }
+                    else {
+                        PolyQuadraticBezierSegment pSegment = new PolyQuadraticBezierSegment();
+                        pSegment.setPoints(_currentSegmentPoints);
+                        segment = pSegment;
+                    }
+                    break;
+                default:
+                    segment = null;
+                    break;
+            }
+
+            if (_currentSegmentIsStroked != s_defaultValueForPathSegmentIsStroked) {
+                segment.setIsStroked(_currentSegmentIsStroked);
+            }
+
+            if (_currentSegmentIsSmoothJoin != s_defaultValueForPathSegmentIsSmoothJoin) {
+                segment.setIsSmoothJoin(_currentSegmentIsSmoothJoin);
+            }
+
+            _segments.add(segment);
+
+            _currentSegmentPoints = null;
+            _currentSegmentType = SegmentType.None;
+        }
+    }
 }

src/android/framework/PathGeometry.java

@@ -5,14 +5,14 @@
 package Windows.UI.Xaml.Controls;
 
 enum SegmentType {
-    SegmentTypeNone,
-    SegmentTypeLine,
-    SegmentTypeBezier,
-    SegmentTypeQuadraticBezier,
-    SegmentTypeArc,
-    SegmentTypePolyLine,
-    SegmentTypePolyBezier,
-    SegmentTypePolyQuadraticBezier
+    None,
+    Line,
+    Bezier,
+    QuadraticBezier,
+    Arc,
+    PolyLine,
+    PolyBezier,
+    PolyQuadraticBezier
 }
 
 public class PathGeometry extends Geometry {