1ddeb9e01f
Bug: None Test: I solemnly swear I tested this conflict resolution. Merged-In: I7fc1162d2c63df8751a4660607e8ce72070efed8 Change-Id: I0e5a5d8fda273644e8c592ce7d059e508870085e
884 lines
32 KiB
Java
884 lines
32 KiB
Java
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.graphics;
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import android.annotation.FloatRange;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.annotation.Size;
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import android.annotation.UnsupportedAppUsage;
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import dalvik.annotation.optimization.CriticalNative;
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import dalvik.annotation.optimization.FastNative;
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import libcore.util.NativeAllocationRegistry;
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/**
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* The Path class encapsulates compound (multiple contour) geometric paths
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* consisting of straight line segments, quadratic curves, and cubic curves.
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* It can be drawn with canvas.drawPath(path, paint), either filled or stroked
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* (based on the paint's Style), or it can be used for clipping or to draw
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* text on a path.
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*/
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public class Path {
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private static final NativeAllocationRegistry sRegistry = new NativeAllocationRegistry(
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Path.class.getClassLoader(), nGetFinalizer(), 48 /* dummy size */);
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/**
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* @hide
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*/
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public final long mNativePath;
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/**
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* @hide
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*/
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@UnsupportedAppUsage
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public boolean isSimplePath = true;
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/**
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* @hide
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*/
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@UnsupportedAppUsage
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public Region rects;
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private Direction mLastDirection = null;
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/**
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* Create an empty path
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*/
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public Path() {
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mNativePath = nInit();
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sRegistry.registerNativeAllocation(this, mNativePath);
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}
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/**
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* Create a new path, copying the contents from the src path.
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*
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* @param src The path to copy from when initializing the new path
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*/
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public Path(@Nullable Path src) {
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long valNative = 0;
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if (src != null) {
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valNative = src.mNativePath;
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isSimplePath = src.isSimplePath;
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if (src.rects != null) {
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rects = new Region(src.rects);
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}
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}
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mNativePath = nInit(valNative);
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sRegistry.registerNativeAllocation(this, mNativePath);
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}
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/**
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* Clear any lines and curves from the path, making it empty.
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* This does NOT change the fill-type setting.
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*/
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public void reset() {
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isSimplePath = true;
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mLastDirection = null;
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if (rects != null) rects.setEmpty();
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// We promised not to change this, so preserve it around the native
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// call, which does now reset fill type.
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final FillType fillType = getFillType();
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nReset(mNativePath);
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setFillType(fillType);
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}
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/**
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* Rewinds the path: clears any lines and curves from the path but
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* keeps the internal data structure for faster reuse.
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*/
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public void rewind() {
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isSimplePath = true;
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mLastDirection = null;
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if (rects != null) rects.setEmpty();
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nRewind(mNativePath);
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}
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/** Replace the contents of this with the contents of src.
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*/
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public void set(@NonNull Path src) {
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if (this == src) {
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return;
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}
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isSimplePath = src.isSimplePath;
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nSet(mNativePath, src.mNativePath);
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if (!isSimplePath) {
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return;
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}
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if (rects != null && src.rects != null) {
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rects.set(src.rects);
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} else if (rects != null && src.rects == null) {
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rects.setEmpty();
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} else if (src.rects != null) {
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rects = new Region(src.rects);
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}
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}
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/**
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* The logical operations that can be performed when combining two paths.
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*
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* @see #op(Path, android.graphics.Path.Op)
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* @see #op(Path, Path, android.graphics.Path.Op)
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*/
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public enum Op {
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/**
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* Subtract the second path from the first path.
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*/
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DIFFERENCE,
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/**
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* Intersect the two paths.
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*/
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INTERSECT,
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/**
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* Union (inclusive-or) the two paths.
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*/
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UNION,
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/**
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* Exclusive-or the two paths.
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*/
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XOR,
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/**
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* Subtract the first path from the second path.
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*/
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REVERSE_DIFFERENCE
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}
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/**
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* Set this path to the result of applying the Op to this path and the specified path.
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* The resulting path will be constructed from non-overlapping contours.
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* The curve order is reduced where possible so that cubics may be turned
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* into quadratics, and quadratics maybe turned into lines.
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*
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* @param path The second operand (for difference, the subtrahend)
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*
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* @return True if operation succeeded, false otherwise and this path remains unmodified.
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*
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* @see Op
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* @see #op(Path, Path, android.graphics.Path.Op)
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*/
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public boolean op(@NonNull Path path, @NonNull Op op) {
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return op(this, path, op);
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}
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/**
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* Set this path to the result of applying the Op to the two specified paths.
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* The resulting path will be constructed from non-overlapping contours.
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* The curve order is reduced where possible so that cubics may be turned
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* into quadratics, and quadratics maybe turned into lines.
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*
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* @param path1 The first operand (for difference, the minuend)
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* @param path2 The second operand (for difference, the subtrahend)
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*
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* @return True if operation succeeded, false otherwise and this path remains unmodified.
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*
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* @see Op
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* @see #op(Path, android.graphics.Path.Op)
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*/
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public boolean op(@NonNull Path path1, @NonNull Path path2, @NonNull Op op) {
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if (nOp(path1.mNativePath, path2.mNativePath, op.ordinal(), this.mNativePath)) {
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isSimplePath = false;
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rects = null;
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return true;
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}
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return false;
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}
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/**
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* Returns the path's convexity, as defined by the content of the path.
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* <p>
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* A path is convex if it has a single contour, and only ever curves in a
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* single direction.
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* <p>
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* This function will calculate the convexity of the path from its control
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* points, and cache the result.
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*
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* @return True if the path is convex.
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*/
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public boolean isConvex() {
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return nIsConvex(mNativePath);
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}
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/**
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* Enum for the ways a path may be filled.
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*/
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public enum FillType {
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// these must match the values in SkPath.h
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/**
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* Specifies that "inside" is computed by a non-zero sum of signed
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* edge crossings.
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*/
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WINDING (0),
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/**
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* Specifies that "inside" is computed by an odd number of edge
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* crossings.
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*/
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EVEN_ODD (1),
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/**
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* Same as {@link #WINDING}, but draws outside of the path, rather than inside.
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*/
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INVERSE_WINDING (2),
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/**
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* Same as {@link #EVEN_ODD}, but draws outside of the path, rather than inside.
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*/
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INVERSE_EVEN_ODD(3);
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FillType(int ni) {
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nativeInt = ni;
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}
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final int nativeInt;
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}
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// these must be in the same order as their native values
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static final FillType[] sFillTypeArray = {
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FillType.WINDING,
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FillType.EVEN_ODD,
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FillType.INVERSE_WINDING,
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FillType.INVERSE_EVEN_ODD
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};
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/**
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* Return the path's fill type. This defines how "inside" is
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* computed. The default value is WINDING.
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*
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* @return the path's fill type
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*/
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@NonNull
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public FillType getFillType() {
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return sFillTypeArray[nGetFillType(mNativePath)];
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}
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/**
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* Set the path's fill type. This defines how "inside" is computed.
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*
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* @param ft The new fill type for this path
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*/
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public void setFillType(@NonNull FillType ft) {
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nSetFillType(mNativePath, ft.nativeInt);
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}
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/**
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* Returns true if the filltype is one of the INVERSE variants
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*
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* @return true if the filltype is one of the INVERSE variants
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*/
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public boolean isInverseFillType() {
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final int ft = nGetFillType(mNativePath);
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return (ft & FillType.INVERSE_WINDING.nativeInt) != 0;
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}
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/**
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* Toggles the INVERSE state of the filltype
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*/
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public void toggleInverseFillType() {
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int ft = nGetFillType(mNativePath);
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ft ^= FillType.INVERSE_WINDING.nativeInt;
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nSetFillType(mNativePath, ft);
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}
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/**
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* Returns true if the path is empty (contains no lines or curves)
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*
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* @return true if the path is empty (contains no lines or curves)
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*/
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public boolean isEmpty() {
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return nIsEmpty(mNativePath);
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}
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/**
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* Returns true if the path specifies a rectangle. If so, and if rect is
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* not null, set rect to the bounds of the path. If the path does not
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* specify a rectangle, return false and ignore rect.
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*
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* @param rect If not null, returns the bounds of the path if it specifies
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* a rectangle
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* @return true if the path specifies a rectangle
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*/
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public boolean isRect(@Nullable RectF rect) {
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return nIsRect(mNativePath, rect);
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}
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/**
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* Compute the bounds of the control points of the path, and write the
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* answer into bounds. If the path contains 0 or 1 points, the bounds is
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* set to (0,0,0,0)
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*
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* @param bounds Returns the computed bounds of the path's control points.
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* @param exact This parameter is no longer used.
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*/
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@SuppressWarnings({"UnusedDeclaration"})
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public void computeBounds(@NonNull RectF bounds, boolean exact) {
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nComputeBounds(mNativePath, bounds);
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}
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/**
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* Hint to the path to prepare for adding more points. This can allow the
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* path to more efficiently allocate its storage.
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*
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* @param extraPtCount The number of extra points that may be added to this
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* path
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*/
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public void incReserve(int extraPtCount) {
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nIncReserve(mNativePath, extraPtCount);
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}
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/**
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* Set the beginning of the next contour to the point (x,y).
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*
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* @param x The x-coordinate of the start of a new contour
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* @param y The y-coordinate of the start of a new contour
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*/
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public void moveTo(float x, float y) {
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nMoveTo(mNativePath, x, y);
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}
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/**
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* Set the beginning of the next contour relative to the last point on the
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* previous contour. If there is no previous contour, this is treated the
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* same as moveTo().
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*
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* @param dx The amount to add to the x-coordinate of the end of the
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* previous contour, to specify the start of a new contour
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* @param dy The amount to add to the y-coordinate of the end of the
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* previous contour, to specify the start of a new contour
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*/
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public void rMoveTo(float dx, float dy) {
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nRMoveTo(mNativePath, dx, dy);
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}
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/**
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* Add a line from the last point to the specified point (x,y).
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* If no moveTo() call has been made for this contour, the first point is
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* automatically set to (0,0).
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*
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* @param x The x-coordinate of the end of a line
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* @param y The y-coordinate of the end of a line
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*/
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public void lineTo(float x, float y) {
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isSimplePath = false;
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nLineTo(mNativePath, x, y);
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}
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/**
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* Same as lineTo, but the coordinates are considered relative to the last
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* point on this contour. If there is no previous point, then a moveTo(0,0)
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* is inserted automatically.
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*
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* @param dx The amount to add to the x-coordinate of the previous point on
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* this contour, to specify a line
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* @param dy The amount to add to the y-coordinate of the previous point on
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* this contour, to specify a line
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*/
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public void rLineTo(float dx, float dy) {
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isSimplePath = false;
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nRLineTo(mNativePath, dx, dy);
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}
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/**
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* Add a quadratic bezier from the last point, approaching control point
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* (x1,y1), and ending at (x2,y2). If no moveTo() call has been made for
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* this contour, the first point is automatically set to (0,0).
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*
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* @param x1 The x-coordinate of the control point on a quadratic curve
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* @param y1 The y-coordinate of the control point on a quadratic curve
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* @param x2 The x-coordinate of the end point on a quadratic curve
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* @param y2 The y-coordinate of the end point on a quadratic curve
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*/
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public void quadTo(float x1, float y1, float x2, float y2) {
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isSimplePath = false;
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nQuadTo(mNativePath, x1, y1, x2, y2);
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}
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/**
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* Same as quadTo, but the coordinates are considered relative to the last
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* point on this contour. If there is no previous point, then a moveTo(0,0)
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* is inserted automatically.
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*
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* @param dx1 The amount to add to the x-coordinate of the last point on
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* this contour, for the control point of a quadratic curve
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* @param dy1 The amount to add to the y-coordinate of the last point on
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* this contour, for the control point of a quadratic curve
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* @param dx2 The amount to add to the x-coordinate of the last point on
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* this contour, for the end point of a quadratic curve
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* @param dy2 The amount to add to the y-coordinate of the last point on
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* this contour, for the end point of a quadratic curve
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*/
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public void rQuadTo(float dx1, float dy1, float dx2, float dy2) {
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isSimplePath = false;
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nRQuadTo(mNativePath, dx1, dy1, dx2, dy2);
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}
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/**
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* Add a cubic bezier from the last point, approaching control points
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* (x1,y1) and (x2,y2), and ending at (x3,y3). If no moveTo() call has been
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* made for this contour, the first point is automatically set to (0,0).
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*
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* @param x1 The x-coordinate of the 1st control point on a cubic curve
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* @param y1 The y-coordinate of the 1st control point on a cubic curve
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* @param x2 The x-coordinate of the 2nd control point on a cubic curve
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* @param y2 The y-coordinate of the 2nd control point on a cubic curve
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* @param x3 The x-coordinate of the end point on a cubic curve
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* @param y3 The y-coordinate of the end point on a cubic curve
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*/
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public void cubicTo(float x1, float y1, float x2, float y2,
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float x3, float y3) {
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isSimplePath = false;
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nCubicTo(mNativePath, x1, y1, x2, y2, x3, y3);
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}
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/**
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* Same as cubicTo, but the coordinates are considered relative to the
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* current point on this contour. If there is no previous point, then a
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* moveTo(0,0) is inserted automatically.
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*/
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public void rCubicTo(float x1, float y1, float x2, float y2,
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float x3, float y3) {
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isSimplePath = false;
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nRCubicTo(mNativePath, x1, y1, x2, y2, x3, y3);
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}
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/**
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* Append the specified arc to the path as a new contour. If the start of
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* the path is different from the path's current last point, then an
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* automatic lineTo() is added to connect the current contour to the
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* start of the arc. However, if the path is empty, then we call moveTo()
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* with the first point of the arc.
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*
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* @param oval The bounds of oval defining shape and size of the arc
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* @param startAngle Starting angle (in degrees) where the arc begins
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* @param sweepAngle Sweep angle (in degrees) measured clockwise, treated
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* mod 360.
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* @param forceMoveTo If true, always begin a new contour with the arc
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*/
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public void arcTo(@NonNull RectF oval, float startAngle, float sweepAngle,
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boolean forceMoveTo) {
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arcTo(oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, forceMoveTo);
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}
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/**
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* Append the specified arc to the path as a new contour. If the start of
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* the path is different from the path's current last point, then an
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* automatic lineTo() is added to connect the current contour to the
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* start of the arc. However, if the path is empty, then we call moveTo()
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* with the first point of the arc.
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*
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* @param oval The bounds of oval defining shape and size of the arc
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* @param startAngle Starting angle (in degrees) where the arc begins
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* @param sweepAngle Sweep angle (in degrees) measured clockwise
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*/
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public void arcTo(@NonNull RectF oval, float startAngle, float sweepAngle) {
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arcTo(oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle, false);
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}
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/**
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* Append the specified arc to the path as a new contour. If the start of
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* the path is different from the path's current last point, then an
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* automatic lineTo() is added to connect the current contour to the
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* start of the arc. However, if the path is empty, then we call moveTo()
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* with the first point of the arc.
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*
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* @param startAngle Starting angle (in degrees) where the arc begins
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* @param sweepAngle Sweep angle (in degrees) measured clockwise, treated
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* mod 360.
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* @param forceMoveTo If true, always begin a new contour with the arc
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*/
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public void arcTo(float left, float top, float right, float bottom, float startAngle,
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float sweepAngle, boolean forceMoveTo) {
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isSimplePath = false;
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nArcTo(mNativePath, left, top, right, bottom, startAngle, sweepAngle, forceMoveTo);
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}
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/**
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* Close the current contour. If the current point is not equal to the
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* first point of the contour, a line segment is automatically added.
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*/
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public void close() {
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isSimplePath = false;
|
|
nClose(mNativePath);
|
|
}
|
|
|
|
/**
|
|
* Specifies how closed shapes (e.g. rects, ovals) are oriented when they
|
|
* are added to a path.
|
|
*/
|
|
public enum Direction {
|
|
/** clockwise */
|
|
CW (0), // must match enum in SkPath.h
|
|
/** counter-clockwise */
|
|
CCW (1); // must match enum in SkPath.h
|
|
|
|
Direction(int ni) {
|
|
nativeInt = ni;
|
|
}
|
|
final int nativeInt;
|
|
}
|
|
|
|
private void detectSimplePath(float left, float top, float right, float bottom, Direction dir) {
|
|
if (mLastDirection == null) {
|
|
mLastDirection = dir;
|
|
}
|
|
if (mLastDirection != dir) {
|
|
isSimplePath = false;
|
|
} else {
|
|
if (rects == null) rects = new Region();
|
|
rects.op((int) left, (int) top, (int) right, (int) bottom, Region.Op.UNION);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a closed rectangle contour to the path
|
|
*
|
|
* @param rect The rectangle to add as a closed contour to the path
|
|
* @param dir The direction to wind the rectangle's contour
|
|
*/
|
|
public void addRect(@NonNull RectF rect, @NonNull Direction dir) {
|
|
addRect(rect.left, rect.top, rect.right, rect.bottom, dir);
|
|
}
|
|
|
|
/**
|
|
* Add a closed rectangle contour to the path
|
|
*
|
|
* @param left The left side of a rectangle to add to the path
|
|
* @param top The top of a rectangle to add to the path
|
|
* @param right The right side of a rectangle to add to the path
|
|
* @param bottom The bottom of a rectangle to add to the path
|
|
* @param dir The direction to wind the rectangle's contour
|
|
*/
|
|
public void addRect(float left, float top, float right, float bottom, @NonNull Direction dir) {
|
|
detectSimplePath(left, top, right, bottom, dir);
|
|
nAddRect(mNativePath, left, top, right, bottom, dir.nativeInt);
|
|
}
|
|
|
|
/**
|
|
* Add a closed oval contour to the path
|
|
*
|
|
* @param oval The bounds of the oval to add as a closed contour to the path
|
|
* @param dir The direction to wind the oval's contour
|
|
*/
|
|
public void addOval(@NonNull RectF oval, @NonNull Direction dir) {
|
|
addOval(oval.left, oval.top, oval.right, oval.bottom, dir);
|
|
}
|
|
|
|
/**
|
|
* Add a closed oval contour to the path
|
|
*
|
|
* @param dir The direction to wind the oval's contour
|
|
*/
|
|
public void addOval(float left, float top, float right, float bottom, @NonNull Direction dir) {
|
|
isSimplePath = false;
|
|
nAddOval(mNativePath, left, top, right, bottom, dir.nativeInt);
|
|
}
|
|
|
|
/**
|
|
* Add a closed circle contour to the path
|
|
*
|
|
* @param x The x-coordinate of the center of a circle to add to the path
|
|
* @param y The y-coordinate of the center of a circle to add to the path
|
|
* @param radius The radius of a circle to add to the path
|
|
* @param dir The direction to wind the circle's contour
|
|
*/
|
|
public void addCircle(float x, float y, float radius, @NonNull Direction dir) {
|
|
isSimplePath = false;
|
|
nAddCircle(mNativePath, x, y, radius, dir.nativeInt);
|
|
}
|
|
|
|
/**
|
|
* Add the specified arc to the path as a new contour.
|
|
*
|
|
* @param oval The bounds of oval defining the shape and size of the arc
|
|
* @param startAngle Starting angle (in degrees) where the arc begins
|
|
* @param sweepAngle Sweep angle (in degrees) measured clockwise
|
|
*/
|
|
public void addArc(@NonNull RectF oval, float startAngle, float sweepAngle) {
|
|
addArc(oval.left, oval.top, oval.right, oval.bottom, startAngle, sweepAngle);
|
|
}
|
|
|
|
/**
|
|
* Add the specified arc to the path as a new contour.
|
|
*
|
|
* @param startAngle Starting angle (in degrees) where the arc begins
|
|
* @param sweepAngle Sweep angle (in degrees) measured clockwise
|
|
*/
|
|
public void addArc(float left, float top, float right, float bottom, float startAngle,
|
|
float sweepAngle) {
|
|
isSimplePath = false;
|
|
nAddArc(mNativePath, left, top, right, bottom, startAngle, sweepAngle);
|
|
}
|
|
|
|
/**
|
|
* Add a closed round-rectangle contour to the path
|
|
*
|
|
* @param rect The bounds of a round-rectangle to add to the path
|
|
* @param rx The x-radius of the rounded corners on the round-rectangle
|
|
* @param ry The y-radius of the rounded corners on the round-rectangle
|
|
* @param dir The direction to wind the round-rectangle's contour
|
|
*/
|
|
public void addRoundRect(@NonNull RectF rect, float rx, float ry, @NonNull Direction dir) {
|
|
addRoundRect(rect.left, rect.top, rect.right, rect.bottom, rx, ry, dir);
|
|
}
|
|
|
|
/**
|
|
* Add a closed round-rectangle contour to the path
|
|
*
|
|
* @param rx The x-radius of the rounded corners on the round-rectangle
|
|
* @param ry The y-radius of the rounded corners on the round-rectangle
|
|
* @param dir The direction to wind the round-rectangle's contour
|
|
*/
|
|
public void addRoundRect(float left, float top, float right, float bottom, float rx, float ry,
|
|
@NonNull Direction dir) {
|
|
isSimplePath = false;
|
|
nAddRoundRect(mNativePath, left, top, right, bottom, rx, ry, dir.nativeInt);
|
|
}
|
|
|
|
/**
|
|
* Add a closed round-rectangle contour to the path. Each corner receives
|
|
* two radius values [X, Y]. The corners are ordered top-left, top-right,
|
|
* bottom-right, bottom-left
|
|
*
|
|
* @param rect The bounds of a round-rectangle to add to the path
|
|
* @param radii Array of 8 values, 4 pairs of [X,Y] radii
|
|
* @param dir The direction to wind the round-rectangle's contour
|
|
*/
|
|
public void addRoundRect(@NonNull RectF rect, @NonNull float[] radii, @NonNull Direction dir) {
|
|
if (rect == null) {
|
|
throw new NullPointerException("need rect parameter");
|
|
}
|
|
addRoundRect(rect.left, rect.top, rect.right, rect.bottom, radii, dir);
|
|
}
|
|
|
|
/**
|
|
* Add a closed round-rectangle contour to the path. Each corner receives
|
|
* two radius values [X, Y]. The corners are ordered top-left, top-right,
|
|
* bottom-right, bottom-left
|
|
*
|
|
* @param radii Array of 8 values, 4 pairs of [X,Y] radii
|
|
* @param dir The direction to wind the round-rectangle's contour
|
|
*/
|
|
public void addRoundRect(float left, float top, float right, float bottom,
|
|
@NonNull float[] radii, @NonNull Direction dir) {
|
|
if (radii.length < 8) {
|
|
throw new ArrayIndexOutOfBoundsException("radii[] needs 8 values");
|
|
}
|
|
isSimplePath = false;
|
|
nAddRoundRect(mNativePath, left, top, right, bottom, radii, dir.nativeInt);
|
|
}
|
|
|
|
/**
|
|
* Add a copy of src to the path, offset by (dx,dy)
|
|
*
|
|
* @param src The path to add as a new contour
|
|
* @param dx The amount to translate the path in X as it is added
|
|
*/
|
|
public void addPath(@NonNull Path src, float dx, float dy) {
|
|
isSimplePath = false;
|
|
nAddPath(mNativePath, src.mNativePath, dx, dy);
|
|
}
|
|
|
|
/**
|
|
* Add a copy of src to the path
|
|
*
|
|
* @param src The path that is appended to the current path
|
|
*/
|
|
public void addPath(@NonNull Path src) {
|
|
isSimplePath = false;
|
|
nAddPath(mNativePath, src.mNativePath);
|
|
}
|
|
|
|
/**
|
|
* Add a copy of src to the path, transformed by matrix
|
|
*
|
|
* @param src The path to add as a new contour
|
|
*/
|
|
public void addPath(@NonNull Path src, @NonNull Matrix matrix) {
|
|
if (!src.isSimplePath) isSimplePath = false;
|
|
nAddPath(mNativePath, src.mNativePath, matrix.native_instance);
|
|
}
|
|
|
|
/**
|
|
* Offset the path by (dx,dy)
|
|
*
|
|
* @param dx The amount in the X direction to offset the entire path
|
|
* @param dy The amount in the Y direction to offset the entire path
|
|
* @param dst The translated path is written here. If this is null, then
|
|
* the original path is modified.
|
|
*/
|
|
public void offset(float dx, float dy, @Nullable Path dst) {
|
|
if (dst != null) {
|
|
dst.set(this);
|
|
} else {
|
|
dst = this;
|
|
}
|
|
dst.offset(dx, dy);
|
|
}
|
|
|
|
/**
|
|
* Offset the path by (dx,dy)
|
|
*
|
|
* @param dx The amount in the X direction to offset the entire path
|
|
* @param dy The amount in the Y direction to offset the entire path
|
|
*/
|
|
public void offset(float dx, float dy) {
|
|
if (isSimplePath && rects == null) {
|
|
// nothing to offset
|
|
return;
|
|
}
|
|
if (isSimplePath && dx == Math.rint(dx) && dy == Math.rint(dy)) {
|
|
rects.translate((int) dx, (int) dy);
|
|
} else {
|
|
isSimplePath = false;
|
|
}
|
|
nOffset(mNativePath, dx, dy);
|
|
}
|
|
|
|
/**
|
|
* Sets the last point of the path.
|
|
*
|
|
* @param dx The new X coordinate for the last point
|
|
* @param dy The new Y coordinate for the last point
|
|
*/
|
|
public void setLastPoint(float dx, float dy) {
|
|
isSimplePath = false;
|
|
nSetLastPoint(mNativePath, dx, dy);
|
|
}
|
|
|
|
/**
|
|
* Transform the points in this path by matrix, and write the answer
|
|
* into dst. If dst is null, then the the original path is modified.
|
|
*
|
|
* @param matrix The matrix to apply to the path
|
|
* @param dst The transformed path is written here. If dst is null,
|
|
* then the the original path is modified
|
|
*/
|
|
public void transform(@NonNull Matrix matrix, @Nullable Path dst) {
|
|
long dstNative = 0;
|
|
if (dst != null) {
|
|
dst.isSimplePath = false;
|
|
dstNative = dst.mNativePath;
|
|
}
|
|
nTransform(mNativePath, matrix.native_instance, dstNative);
|
|
}
|
|
|
|
/**
|
|
* Transform the points in this path by matrix.
|
|
*
|
|
* @param matrix The matrix to apply to the path
|
|
*/
|
|
public void transform(@NonNull Matrix matrix) {
|
|
isSimplePath = false;
|
|
nTransform(mNativePath, matrix.native_instance);
|
|
}
|
|
|
|
/** @hide */
|
|
public final long readOnlyNI() {
|
|
return mNativePath;
|
|
}
|
|
|
|
final long mutateNI() {
|
|
isSimplePath = false;
|
|
return mNativePath;
|
|
}
|
|
|
|
/**
|
|
* Approximate the <code>Path</code> with a series of line segments.
|
|
* This returns float[] with the array containing point components.
|
|
* There are three components for each point, in order:
|
|
* <ul>
|
|
* <li>Fraction along the length of the path that the point resides</li>
|
|
* <li>The x coordinate of the point</li>
|
|
* <li>The y coordinate of the point</li>
|
|
* </ul>
|
|
* <p>Two points may share the same fraction along its length when there is
|
|
* a move action within the Path.</p>
|
|
*
|
|
* @param acceptableError The acceptable error for a line on the
|
|
* Path. Typically this would be 0.5 so that
|
|
* the error is less than half a pixel.
|
|
* @return An array of components for points approximating the Path.
|
|
*/
|
|
@NonNull
|
|
@Size(min = 6, multiple = 3)
|
|
public float[] approximate(@FloatRange(from = 0) float acceptableError) {
|
|
if (acceptableError < 0) {
|
|
throw new IllegalArgumentException("AcceptableError must be greater than or equal to 0");
|
|
}
|
|
return nApproximate(mNativePath, acceptableError);
|
|
}
|
|
|
|
// ------------------ Regular JNI ------------------------
|
|
|
|
private static native long nInit();
|
|
private static native long nInit(long nPath);
|
|
private static native long nGetFinalizer();
|
|
private static native void nSet(long native_dst, long nSrc);
|
|
private static native void nComputeBounds(long nPath, RectF bounds);
|
|
private static native void nIncReserve(long nPath, int extraPtCount);
|
|
private static native void nMoveTo(long nPath, float x, float y);
|
|
private static native void nRMoveTo(long nPath, float dx, float dy);
|
|
private static native void nLineTo(long nPath, float x, float y);
|
|
private static native void nRLineTo(long nPath, float dx, float dy);
|
|
private static native void nQuadTo(long nPath, float x1, float y1, float x2, float y2);
|
|
private static native void nRQuadTo(long nPath, float dx1, float dy1, float dx2, float dy2);
|
|
private static native void nCubicTo(long nPath, float x1, float y1, float x2, float y2,
|
|
float x3, float y3);
|
|
private static native void nRCubicTo(long nPath, float x1, float y1, float x2, float y2,
|
|
float x3, float y3);
|
|
private static native void nArcTo(long nPath, float left, float top, float right, float bottom,
|
|
float startAngle, float sweepAngle, boolean forceMoveTo);
|
|
private static native void nClose(long nPath);
|
|
private static native void nAddRect(long nPath, float left, float top,
|
|
float right, float bottom, int dir);
|
|
private static native void nAddOval(long nPath, float left, float top,
|
|
float right, float bottom, int dir);
|
|
private static native void nAddCircle(long nPath, float x, float y, float radius, int dir);
|
|
private static native void nAddArc(long nPath, float left, float top, float right, float bottom,
|
|
float startAngle, float sweepAngle);
|
|
private static native void nAddRoundRect(long nPath, float left, float top,
|
|
float right, float bottom, float rx, float ry, int dir);
|
|
private static native void nAddRoundRect(long nPath, float left, float top,
|
|
float right, float bottom, float[] radii, int dir);
|
|
private static native void nAddPath(long nPath, long src, float dx, float dy);
|
|
private static native void nAddPath(long nPath, long src);
|
|
private static native void nAddPath(long nPath, long src, long matrix);
|
|
private static native void nOffset(long nPath, float dx, float dy);
|
|
private static native void nSetLastPoint(long nPath, float dx, float dy);
|
|
private static native void nTransform(long nPath, long matrix, long dst_path);
|
|
private static native void nTransform(long nPath, long matrix);
|
|
private static native boolean nOp(long path1, long path2, int op, long result);
|
|
private static native float[] nApproximate(long nPath, float error);
|
|
|
|
// ------------------ Fast JNI ------------------------
|
|
|
|
@FastNative
|
|
private static native boolean nIsRect(long nPath, RectF rect);
|
|
|
|
// ------------------ Critical JNI ------------------------
|
|
|
|
@CriticalNative
|
|
private static native void nReset(long nPath);
|
|
@CriticalNative
|
|
private static native void nRewind(long nPath);
|
|
@CriticalNative
|
|
private static native boolean nIsEmpty(long nPath);
|
|
@CriticalNative
|
|
private static native boolean nIsConvex(long nPath);
|
|
@CriticalNative
|
|
private static native int nGetFillType(long nPath);
|
|
@CriticalNative
|
|
private static native void nSetFillType(long nPath, int ft);
|
|
}
|