Merge "Add offset() to Path's fast-case mode" into nyc-dev

core/jni/android/graphics/Path.cpp

@@ -232,12 +232,6 @@ public:
         obj->addPath(*src, *matrix);
     }
 
-    static void offset__FFPath(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy, jlong dstHandle) {
-        SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
-        SkPath* dst = reinterpret_cast<SkPath*>(dstHandle);
-        obj->offset(dx, dy, dst);
-    }
-
     static void offset__FF(JNIEnv* env, jobject clazz, jlong objHandle, jfloat dx, jfloat dy) {
         SkPath* obj = reinterpret_cast<SkPath*>(objHandle);
         obj->offset(dx, dy);
@@ -508,7 +502,6 @@ static const JNINativeMethod methods[] = {
     {"native_addPath","(JJFF)V", (void*) SkPathGlue::addPath__PathFF},
     {"native_addPath","(JJ)V", (void*) SkPathGlue::addPath__Path},
     {"native_addPath","(JJJ)V", (void*) SkPathGlue::addPath__PathMatrix},
-    {"native_offset","(JFFJ)V", (void*) SkPathGlue::offset__FFPath},
     {"native_offset","(JFF)V", (void*) SkPathGlue::offset__FF},
     {"native_setLastPoint","(JFF)V", (void*) SkPathGlue::setLastPoint},
     {"native_transform","(JJJ)V", (void*) SkPathGlue::transform__MatrixPath},

core/tests/coretests/src/android/graphics/PathOffsetTest.java

@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed 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.
+ */
+
+package android.graphics;
+
+
+import android.graphics.Bitmap.Config;
+import android.graphics.Path.Direction;
+import android.support.test.filters.SmallTest;
+import android.support.test.runner.AndroidJUnit4;
+
+import static org.junit.Assert.assertTrue;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(AndroidJUnit4.class)
+public class PathOffsetTest {
+
+    private static final int SQUARE = 10;
+    private static final int WIDTH = 100;
+    private static final int HEIGHT = 100;
+    private static final int START_X = 10;
+    private static final int START_Y = 20;
+    private static final int OFFSET_X = 30;
+    private static final int OFFSET_Y = 40;
+
+    @Test
+    @SmallTest
+    public void testPathOffset() {
+        Path actualPath = new Path();
+        actualPath.addRect(START_X, START_Y, START_X + SQUARE, START_Y + SQUARE, Direction.CW);
+        assertTrue(actualPath.isSimplePath);
+        actualPath.offset(OFFSET_X, OFFSET_Y);
+        assertTrue(actualPath.isSimplePath);
+
+        Path expectedPath = new Path();
+        expectedPath.addRect(START_X + OFFSET_X, START_Y + OFFSET_Y, START_X + OFFSET_X + SQUARE,
+                START_Y + OFFSET_Y + SQUARE, Direction.CW);
+
+        assertPaths(actualPath, expectedPath);
+    }
+
+    @Test
+    @SmallTest
+    public void testPathOffsetWithDestination() {
+        Path initialPath = new Path();
+        initialPath.addRect(START_X, START_Y, START_X + SQUARE, START_Y + SQUARE, Direction.CW);
+        Path actualPath = new Path();
+        assertTrue(initialPath.isSimplePath);
+        assertTrue(actualPath.isSimplePath);
+        initialPath.offset(OFFSET_X, OFFSET_Y, actualPath);
+        assertTrue(actualPath.isSimplePath);
+
+        Path expectedPath = new Path();
+        expectedPath.addRect(START_X + OFFSET_X, START_Y + OFFSET_Y, START_X + OFFSET_X + SQUARE,
+                START_Y + OFFSET_Y + SQUARE, Direction.CW);
+
+        assertPaths(actualPath, expectedPath);
+    }
+
+    private static void assertPaths(Path actual, Path expected) {
+        Bitmap actualBitmap = drawAndGetBitmap(actual);
+        Bitmap expectedBitmap = drawAndGetBitmap(expected);
+        assertTrue(actualBitmap.sameAs(expectedBitmap));
+    }
+
+    private static Bitmap drawAndGetBitmap(Path path) {
+        Bitmap bitmap = Bitmap.createBitmap(WIDTH, HEIGHT, Config.ARGB_8888);
+        bitmap.eraseColor(Color.BLACK);
+        Paint paint = new Paint();
+        paint.setColor(Color.RED);
+        Canvas canvas = new Canvas(bitmap);
+        canvas.drawPath(path, paint);
+        return bitmap;
+    }
+
+}

graphics/java/android/graphics/Path.java

@@ -16,6 +16,9 @@
 
 package android.graphics;
 
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+
 /**
  * The Path class encapsulates compound (multiple contour) geometric paths
  * consisting of straight line segments, quadratic curves, and cubic curves.
@@ -91,10 +94,22 @@ public class Path {
 
     /** Replace the contents of this with the contents of src.
     */
-    public void set(Path src) {
-        if (this != src) {
-            isSimplePath = src.isSimplePath;
-            native_set(mNativePath, src.mNativePath);
+    public void set(@NonNull Path src) {
+        if (this == src) {
+            return;
+        }
+        isSimplePath = src.isSimplePath;
+        native_set(mNativePath, src.mNativePath);
+        if (!isSimplePath) {
+            return;
+        }
+
+        if (rects != null && src.rects != null) {
+            rects.set(src.rects);
+        } else if (rects != null && src.rects == null) {
+            rects.setEmpty();
+        } else if (src.rects != null) {
+            rects = new Region(src.rects);
         }
     }
 
@@ -685,13 +700,13 @@ public class 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, Path dst) {
-        long dstNative = 0;
+    public void offset(float dx, float dy, @Nullable Path dst) {
         if (dst != null) {
-            dstNative = dst.mNativePath;
-            dst.isSimplePath = false;
+            dst.set(this);
+        } else {
+            dst = this;
         }
-        native_offset(mNativePath, dx, dy, dstNative);
+        dst.offset(dx, dy);
     }
 
     /**
@@ -701,7 +716,15 @@ public class Path {
      * @param dy The amount in the Y direction to offset the entire path
      */
     public void offset(float dx, float dy) {
-        isSimplePath = false;
+        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;
+        }
         native_offset(mNativePath, dx, dy);
     }
 
@@ -823,7 +846,6 @@ public class Path {
     private static native void native_addPath(long nPath, long src, float dx, float dy);
     private static native void native_addPath(long nPath, long src);
     private static native void native_addPath(long nPath, long src, long matrix);
-    private static native void native_offset(long nPath, float dx, float dy, long dst_path);
     private static native void native_offset(long nPath, float dx, float dy);
     private static native void native_setLastPoint(long nPath, float dx, float dy);
     private static native void native_transform(long nPath, long matrix, long dst_path);