1 files changed, 133 insertions, 0 deletions
diff --git a/java/src/com/android/inputmethod/latin/InputPointers.java b/java/src/com/android/inputmethod/latin/InputPointers.java
new file mode 100644
index 000000000..6b48aabb3
--- /dev/null
+++ b/java/src/com/android/inputmethod/latin/InputPointers.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2012 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 com.android.inputmethod.latin;
+
+// TODO: This class is not thread-safe.
+public final class InputPointers {
+    private final int mDefaultCapacity;
+    private final ResizableIntArray mXCoordinates;
+    private final ResizableIntArray mYCoordinates;
+    private final ResizableIntArray mPointerIds;
+    private final ResizableIntArray mTimes;
+
+    public InputPointers(int defaultCapacity) {
+        mDefaultCapacity = defaultCapacity;
+        mXCoordinates = new ResizableIntArray(defaultCapacity);
+        mYCoordinates = new ResizableIntArray(defaultCapacity);
+        mPointerIds = new ResizableIntArray(defaultCapacity);
+        mTimes = new ResizableIntArray(defaultCapacity);
+    }
+
+    public void addPointer(int index, int x, int y, int pointerId, int time) {
+        mXCoordinates.add(index, x);
+        mYCoordinates.add(index, y);
+        mPointerIds.add(index, pointerId);
+        mTimes.add(index, time);
+    }
+
+    public void addPointer(int x, int y, int pointerId, int time) {
+        mXCoordinates.add(x);
+        mYCoordinates.add(y);
+        mPointerIds.add(pointerId);
+        mTimes.add(time);
+    }
+
+    public void set(InputPointers ip) {
+        mXCoordinates.set(ip.mXCoordinates);
+        mYCoordinates.set(ip.mYCoordinates);
+        mPointerIds.set(ip.mPointerIds);
+        mTimes.set(ip.mTimes);
+    }
+
+    public void copy(InputPointers ip) {
+        mXCoordinates.copy(ip.mXCoordinates);
+        mYCoordinates.copy(ip.mYCoordinates);
+        mPointerIds.copy(ip.mPointerIds);
+        mTimes.copy(ip.mTimes);
+    }
+
+    /**
+     * Append the pointers in the specified {@link InputPointers} to the end of this.
+     * @param src the source {@link InputPointers} to read the data from.
+     * @param startPos the starting index of the pointers in {@code src}.
+     * @param length the number of pointers to be appended.
+     */
+    public void append(InputPointers src, int startPos, int length) {
+        if (length == 0) {
+            return;
+        }
+        mXCoordinates.append(src.mXCoordinates, startPos, length);
+        mYCoordinates.append(src.mYCoordinates, startPos, length);
+        mPointerIds.append(src.mPointerIds, startPos, length);
+        mTimes.append(src.mTimes, startPos, length);
+    }
+
+    /**
+     * Append the times, x-coordinates and y-coordinates in the specified {@link ResizableIntArray}
+     * to the end of this.
+     * @param pointerId the pointer id of the source.
+     * @param times the source {@link ResizableIntArray} to read the event times from.
+     * @param xCoordinates the source {@link ResizableIntArray} to read the x-coordinates from.
+     * @param yCoordinates the source {@link ResizableIntArray} to read the y-coordinates from.
+     * @param startPos the starting index of the data in {@code times} and etc.
+     * @param length the number of data to be appended.
+     */
+    public void append(int pointerId, ResizableIntArray times, ResizableIntArray xCoordinates,
+            ResizableIntArray yCoordinates, int startPos, int length) {
+        if (length == 0) {
+            return;
+        }
+        mXCoordinates.append(xCoordinates, startPos, length);
+        mYCoordinates.append(yCoordinates, startPos, length);
+        mPointerIds.fill(pointerId, mPointerIds.getLength(), length);
+        mTimes.append(times, startPos, length);
+    }
+
+    public void reset() {
+        final int defaultCapacity = mDefaultCapacity;
+        mXCoordinates.reset(defaultCapacity);
+        mYCoordinates.reset(defaultCapacity);
+        mPointerIds.reset(defaultCapacity);
+        mTimes.reset(defaultCapacity);
+    }
+
+    public int getPointerSize() {
+        return mXCoordinates.getLength();
+    }
+
+    public int[] getXCoordinates() {
+        return mXCoordinates.getPrimitiveArray();
+    }
+
+    public int[] getYCoordinates() {
+        return mYCoordinates.getPrimitiveArray();
+    }
+
+    public int[] getPointerIds() {
+        return mPointerIds.getPrimitiveArray();
+    }
+
+    public int[] getTimes() {
+        return mTimes.getPrimitiveArray();
+    }
+
+    @Override
+    public String toString() {
+        return "size=" + getPointerSize() + " id=" + mPointerIds + " time=" + mTimes
+                + " x=" + mXCoordinates + " y=" + mYCoordinates;
+    }
+}