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Diffstat (limited to 'awt/java/awt/geom/GeneralPath.java')
| -rw-r--r-- | awt/java/awt/geom/GeneralPath.java | 624 |
1 files changed, 0 insertions, 624 deletions
diff --git a/awt/java/awt/geom/GeneralPath.java b/awt/java/awt/geom/GeneralPath.java deleted file mode 100644 index 0669bc7..0000000 --- a/awt/java/awt/geom/GeneralPath.java +++ /dev/null @@ -1,624 +0,0 @@ -/* - * Licensed to the Apache Software Foundation (ASF) under one or more - * contributor license agreements. See the NOTICE file distributed with - * this work for additional information regarding copyright ownership. - * The ASF licenses this file to You under the Apache License, Version 2.0 - * (the "License"); you may not use this file except in compliance with - * the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -/** - * @author Denis M. Kishenko - * @version $Revision$ - */ - -package java.awt.geom; - -import java.awt.Rectangle; -import java.awt.Shape; -import java.util.NoSuchElementException; - -import org.apache.harmony.awt.gl.Crossing; -import org.apache.harmony.awt.internal.nls.Messages; - -/** - * The class GeneralPath represents a shape whose outline is given by different - * types of curved and straight segments. - * - * @since Android 1.0 - */ -public final class GeneralPath implements Shape, Cloneable { - - /** - * The Constant WIND_EVEN_ODD see {@link PathIterator#WIND_EVEN_ODD}. - */ - public static final int WIND_EVEN_ODD = PathIterator.WIND_EVEN_ODD; - - /** - * The Constant WIND_NON_ZERO see {@link PathIterator#WIND_NON_ZERO}. - */ - public static final int WIND_NON_ZERO = PathIterator.WIND_NON_ZERO; - - /** - * The buffers size. - */ - private static final int BUFFER_SIZE = 10; - - /** - * The buffers capacity. - */ - private static final int BUFFER_CAPACITY = 10; - - /** - * The point's types buffer. - */ - byte[] types; - - /** - * The points buffer. - */ - float[] points; - - /** - * The point's type buffer size. - */ - int typeSize; - - /** - * The points buffer size. - */ - int pointSize; - - /** - * The path rule. - */ - int rule; - - /** - * The space amount in points buffer for different segmenet's types. - */ - static int pointShift[] = { - 2, // MOVETO - 2, // LINETO - 4, // QUADTO - 6, // CUBICTO - 0 - }; // CLOSE - - /* - * GeneralPath path iterator - */ - /** - * The Class Iterator is the subclass of Iterator for traversing the outline - * of a GeneralPath. - */ - class Iterator implements PathIterator { - - /** - * The current cursor position in types buffer. - */ - int typeIndex; - - /** - * The current cursor position in points buffer. - */ - int pointIndex; - - /** - * The source GeneralPath object. - */ - GeneralPath p; - - /** - * The path iterator transformation. - */ - AffineTransform t; - - /** - * Constructs a new GeneralPath.Iterator for given general path. - * - * @param path - * the source GeneralPath object. - */ - Iterator(GeneralPath path) { - this(path, null); - } - - /** - * Constructs a new GeneralPath.Iterator for given general path and - * transformation. - * - * @param path - * the source GeneralPath object. - * @param at - * the AffineTransform object to apply rectangle path. - */ - Iterator(GeneralPath path, AffineTransform at) { - this.p = path; - this.t = at; - } - - public int getWindingRule() { - return p.getWindingRule(); - } - - public boolean isDone() { - return typeIndex >= p.typeSize; - } - - public void next() { - typeIndex++; - } - - public int currentSegment(double[] coords) { - if (isDone()) { - // awt.4B=Iterator out of bounds - throw new NoSuchElementException(Messages.getString("awt.4B")); //$NON-NLS-1$ - } - int type = p.types[typeIndex]; - int count = GeneralPath.pointShift[type]; - for (int i = 0; i < count; i++) { - coords[i] = p.points[pointIndex + i]; - } - if (t != null) { - t.transform(coords, 0, coords, 0, count / 2); - } - pointIndex += count; - return type; - } - - public int currentSegment(float[] coords) { - if (isDone()) { - // awt.4B=Iterator out of bounds - throw new NoSuchElementException(Messages.getString("awt.4B")); //$NON-NLS-1$ - } - int type = p.types[typeIndex]; - int count = GeneralPath.pointShift[type]; - System.arraycopy(p.points, pointIndex, coords, 0, count); - if (t != null) { - t.transform(coords, 0, coords, 0, count / 2); - } - pointIndex += count; - return type; - } - - } - - /** - * Instantiates a new general path with the winding rule set to - * {@link PathIterator#WIND_NON_ZERO} and the initial capacity (number of - * segments) set to the default value 10. - */ - public GeneralPath() { - this(WIND_NON_ZERO, BUFFER_SIZE); - } - - /** - * Instantiates a new general path with the given winding rule and the - * initial capacity (number of segments) set to the default value 10. - * - * @param rule - * the winding rule, either {@link PathIterator#WIND_EVEN_ODD} or - * {@link PathIterator#WIND_NON_ZERO}. - */ - public GeneralPath(int rule) { - this(rule, BUFFER_SIZE); - } - - /** - * Instantiates a new general path with the given winding rule and initial - * capacity (number of segments). - * - * @param rule - * the winding rule, either {@link PathIterator#WIND_EVEN_ODD} or - * {@link PathIterator#WIND_NON_ZERO}. - * @param initialCapacity - * the number of segments the path is set to hold. - */ - public GeneralPath(int rule, int initialCapacity) { - setWindingRule(rule); - types = new byte[initialCapacity]; - points = new float[initialCapacity * 2]; - } - - /** - * Creates a new GeneralPath from the outline of the given shape. - * - * @param shape - * the shape. - */ - public GeneralPath(Shape shape) { - this(WIND_NON_ZERO, BUFFER_SIZE); - PathIterator p = shape.getPathIterator(null); - setWindingRule(p.getWindingRule()); - append(p, false); - } - - /** - * Sets the winding rule, which determines how to decide whether a point - * that isn't on the path itself is inside or outside of the shape. - * - * @param rule - * the new winding rule. - * @throws IllegalArgumentException - * if the winding rule is neither - * {@link PathIterator#WIND_EVEN_ODD} nor - * {@link PathIterator#WIND_NON_ZERO}. - */ - public void setWindingRule(int rule) { - if (rule != WIND_EVEN_ODD && rule != WIND_NON_ZERO) { - // awt.209=Invalid winding rule value - throw new java.lang.IllegalArgumentException(Messages.getString("awt.209")); //$NON-NLS-1$ - } - this.rule = rule; - } - - /** - * Gets the winding rule. - * - * @return the winding rule, either {@link PathIterator#WIND_EVEN_ODD} or - * {@link PathIterator#WIND_NON_ZERO}. - */ - public int getWindingRule() { - return rule; - } - - /** - * Checks the point data buffer sizes to see whether pointCount additional - * point-data elements can fit. (Note that the number of point data elements - * to add is more than one per point -- it depends on the type of point - * being added.) Reallocates the buffers to enlarge the size if necessary. - * - * @param pointCount - * the number of point data elements to be added. - * @param checkMove - * whether to check for existing points. - * @throws IllegalPathStateException - * checkMove is true and the path is currently empty. - */ - void checkBuf(int pointCount, boolean checkMove) { - if (checkMove && typeSize == 0) { - // awt.20A=First segment should be SEG_MOVETO type - throw new IllegalPathStateException(Messages.getString("awt.20A")); //$NON-NLS-1$ - } - if (typeSize == types.length) { - byte tmp[] = new byte[typeSize + BUFFER_CAPACITY]; - System.arraycopy(types, 0, tmp, 0, typeSize); - types = tmp; - } - if (pointSize + pointCount > points.length) { - float tmp[] = new float[pointSize + Math.max(BUFFER_CAPACITY * 2, pointCount)]; - System.arraycopy(points, 0, tmp, 0, pointSize); - points = tmp; - } - } - - /** - * Appends a new point to the end of this general path, disconnected from - * the existing path. - * - * @param x - * the x coordinate of the next point to append. - * @param y - * the y coordinate of the next point to append. - */ - public void moveTo(float x, float y) { - if (typeSize > 0 && types[typeSize - 1] == PathIterator.SEG_MOVETO) { - points[pointSize - 2] = x; - points[pointSize - 1] = y; - } else { - checkBuf(2, false); - types[typeSize++] = PathIterator.SEG_MOVETO; - points[pointSize++] = x; - points[pointSize++] = y; - } - } - - /** - * Appends a new segment to the end of this general path by making a - * straight line segment from the current endpoint to the given new point. - * - * @param x - * the x coordinate of the next point to append. - * @param y - * the y coordinate of the next point to append. - */ - public void lineTo(float x, float y) { - checkBuf(2, true); - types[typeSize++] = PathIterator.SEG_LINETO; - points[pointSize++] = x; - points[pointSize++] = y; - } - - /** - * Appends a new segment to the end of this general path by making a - * quadratic curve from the current endpoint to the point (x2, y2) using the - * point (x1, y1) as the quadratic curve's control point. - * - * @param x1 - * the x coordinate of the quadratic curve's control point. - * @param y1 - * the y coordinate of the quadratic curve's control point. - * @param x2 - * the x coordinate of the quadratic curve's end point. - * @param y2 - * the y coordinate of the quadratic curve's end point. - */ - public void quadTo(float x1, float y1, float x2, float y2) { - checkBuf(4, true); - types[typeSize++] = PathIterator.SEG_QUADTO; - points[pointSize++] = x1; - points[pointSize++] = y1; - points[pointSize++] = x2; - points[pointSize++] = y2; - } - - /** - * Appends a new segment to the end of this general path by making a cubic - * curve from the current endpoint to the point (x3, y3) using (x1, y1) and - * (x2, y2) as control points. - * - * @see java.awt.geom.CubicCurve2D - * @param x1 - * the x coordinate of the new cubic segment's first control - * point. - * @param y1 - * the y coordinate of the new cubic segment's first control - * point. - * @param x2 - * the x coordinate of the new cubic segment's second control - * point. - * @param y2 - * the y coordinate of the new cubic segment's second control - * point. - * @param x3 - * the x coordinate of the new cubic segment's end point. - * @param y3 - * the y coordinate of the new cubic segment's end point. - */ - public void curveTo(float x1, float y1, float x2, float y2, float x3, float y3) { - checkBuf(6, true); - types[typeSize++] = PathIterator.SEG_CUBICTO; - points[pointSize++] = x1; - points[pointSize++] = y1; - points[pointSize++] = x2; - points[pointSize++] = y2; - points[pointSize++] = x3; - points[pointSize++] = y3; - } - - /** - * Appends the type information to declare that the current endpoint closes - * the curve. - */ - public void closePath() { - if (typeSize == 0 || types[typeSize - 1] != PathIterator.SEG_CLOSE) { - checkBuf(0, true); - types[typeSize++] = PathIterator.SEG_CLOSE; - } - } - - /** - * Appends the outline of the specified shape onto the end of this - * GeneralPath. - * - * @param shape - * the shape whose outline is to be appended. - * @param connect - * true to connect this path's current endpoint to the first - * point of the shape's outline or false to append the shape's - * outline without connecting it. - * @throws NullPointerException - * if the shape parameter is null. - */ - public void append(Shape shape, boolean connect) { - PathIterator p = shape.getPathIterator(null); - append(p, connect); - } - - /** - * Appends the path defined by the specified PathIterator onto the end of - * this GeneralPath. - * - * @param path - * the PathIterator that defines the new path to append. - * @param connect - * true to connect this path's current endpoint to the first - * point of the shape's outline or false to append the shape's - * outline without connecting it. - */ - public void append(PathIterator path, boolean connect) { - while (!path.isDone()) { - float coords[] = new float[6]; - switch (path.currentSegment(coords)) { - case PathIterator.SEG_MOVETO: - if (!connect || typeSize == 0) { - moveTo(coords[0], coords[1]); - break; - } - if (types[typeSize - 1] != PathIterator.SEG_CLOSE - && points[pointSize - 2] == coords[0] - && points[pointSize - 1] == coords[1]) { - break; - } - // NO BREAK; - case PathIterator.SEG_LINETO: - lineTo(coords[0], coords[1]); - break; - case PathIterator.SEG_QUADTO: - quadTo(coords[0], coords[1], coords[2], coords[3]); - break; - case PathIterator.SEG_CUBICTO: - curveTo(coords[0], coords[1], coords[2], coords[3], coords[4], coords[5]); - break; - case PathIterator.SEG_CLOSE: - closePath(); - break; - } - path.next(); - connect = false; - } - } - - /** - * Gets the current end point of the path. - * - * @return the current end point of the path. - */ - public Point2D getCurrentPoint() { - if (typeSize == 0) { - return null; - } - int j = pointSize - 2; - if (types[typeSize - 1] == PathIterator.SEG_CLOSE) { - - for (int i = typeSize - 2; i > 0; i--) { - int type = types[i]; - if (type == PathIterator.SEG_MOVETO) { - break; - } - j -= pointShift[type]; - } - } - return new Point2D.Float(points[j], points[j + 1]); - } - - /** - * Resets the GeneralPath to being an empty path. The underlying point and - * segment data is not deleted but rather the end indices of the data arrays - * are set to zero. - */ - public void reset() { - typeSize = 0; - pointSize = 0; - } - - /** - * Transform all of the coordinates of this path according to the specified - * AffineTransform. - * - * @param t - * the AffineTransform. - */ - public void transform(AffineTransform t) { - t.transform(points, 0, points, 0, pointSize / 2); - } - - /** - * Creates a new GeneralPath whose data is given by this path's data - * transformed according to the specified AffineTransform. - * - * @param t - * the AffineTransform. - * @return the new GeneralPath whose data is given by this path's data - * transformed according to the specified AffineTransform. - */ - public Shape createTransformedShape(AffineTransform t) { - GeneralPath p = (GeneralPath)clone(); - if (t != null) { - p.transform(t); - } - return p; - } - - public Rectangle2D getBounds2D() { - float rx1, ry1, rx2, ry2; - if (pointSize == 0) { - rx1 = ry1 = rx2 = ry2 = 0.0f; - } else { - int i = pointSize - 1; - ry1 = ry2 = points[i--]; - rx1 = rx2 = points[i--]; - while (i > 0) { - float y = points[i--]; - float x = points[i--]; - if (x < rx1) { - rx1 = x; - } else if (x > rx2) { - rx2 = x; - } - if (y < ry1) { - ry1 = y; - } else if (y > ry2) { - ry2 = y; - } - } - } - return new Rectangle2D.Float(rx1, ry1, rx2 - rx1, ry2 - ry1); - } - - public Rectangle getBounds() { - return getBounds2D().getBounds(); - } - - /** - * Checks the cross count (number of times a ray from the point crosses the - * shape's boundary) to determine whether the number of crossings - * corresponds to a point inside the shape or not (according to the shape's - * path rule). - * - * @param cross - * the point's cross count. - * @return true if the point is inside the path, or false otherwise. - */ - boolean isInside(int cross) { - if (rule == WIND_NON_ZERO) { - return Crossing.isInsideNonZero(cross); - } - return Crossing.isInsideEvenOdd(cross); - } - - public boolean contains(double px, double py) { - return isInside(Crossing.crossShape(this, px, py)); - } - - public boolean contains(double rx, double ry, double rw, double rh) { - int cross = Crossing.intersectShape(this, rx, ry, rw, rh); - return cross != Crossing.CROSSING && isInside(cross); - } - - public boolean intersects(double rx, double ry, double rw, double rh) { - int cross = Crossing.intersectShape(this, rx, ry, rw, rh); - return cross == Crossing.CROSSING || isInside(cross); - } - - public boolean contains(Point2D p) { - return contains(p.getX(), p.getY()); - } - - public boolean contains(Rectangle2D r) { - return contains(r.getX(), r.getY(), r.getWidth(), r.getHeight()); - } - - public boolean intersects(Rectangle2D r) { - return intersects(r.getX(), r.getY(), r.getWidth(), r.getHeight()); - } - - public PathIterator getPathIterator(AffineTransform t) { - return new Iterator(this, t); - } - - public PathIterator getPathIterator(AffineTransform t, double flatness) { - return new FlatteningPathIterator(getPathIterator(t), flatness); - } - - @Override - public Object clone() { - try { - GeneralPath p = (GeneralPath)super.clone(); - p.types = types.clone(); - p.points = points.clone(); - return p; - } catch (CloneNotSupportedException e) { - throw new InternalError(); - } - } - -} |