Clean up GestureFloatingPreviewText

Change-Id: Ie64dd06a99e54b2f432725f69dc4f38c81359ce6

java/src/com/android/inputmethod/keyboard/internal/GestureFloatingPreviewText.java

@@ -28,7 +28,6 @@ import android.view.View;
 import com.android.inputmethod.keyboard.PointerTracker;
 import com.android.inputmethod.latin.CoordinateUtils;
 import com.android.inputmethod.latin.R;
-import com.android.inputmethod.latin.ResizableIntArray;
 import com.android.inputmethod.latin.SuggestedWords;
 
 /**
@@ -44,16 +43,17 @@ import com.android.inputmethod.latin.SuggestedWords;
  * @attr ref R.styleable#KeyboardView_gestureFloatingPreviewRoundRadius
  */
 public class GestureFloatingPreviewText extends AbstractDrawingPreview {
-    private static final class GesturePreviewTextParams {
+    protected static final class GesturePreviewTextParams {
-        public final int mGesturePreviewTextSize;
-        public final int mGesturePreviewTextColor;
         public final int mGesturePreviewTextOffset;
         public final int mGesturePreviewTextHeight;
-        public final int mGesturePreviewColor;
         public final float mGesturePreviewHorizontalPadding;
         public final float mGesturePreviewVerticalPadding;
         public final float mGesturePreviewRoundRadius;
-        public final Paint mTextPaint;
+
+        private final int mGesturePreviewTextSize;
+        private final int mGesturePreviewTextColor;
+        private final int mGesturePreviewColor;
+        private final Paint mPaint = new Paint();
 
         private static final char[] TEXT_HEIGHT_REFERENCE_CHAR = { 'M' };
 
@@ -73,37 +73,36 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
             mGesturePreviewRoundRadius = mainKeyboardViewAttr.getDimension(
                     R.styleable.MainKeyboardView_gestureFloatingPreviewRoundRadius, 0.0f);
 
-            final Paint textPaint = new Paint();
+            final Paint textPaint = getTextPaint();
-            textPaint.setAntiAlias(true);
-            textPaint.setTextAlign(Align.CENTER);
-            textPaint.setTextSize(mGesturePreviewTextSize);
-            mTextPaint = textPaint;
             final Rect textRect = new Rect();
             textPaint.getTextBounds(TEXT_HEIGHT_REFERENCE_CHAR, 0, 1, textRect);
             mGesturePreviewTextHeight = textRect.height();
         }
+
+        public Paint getTextPaint() {
+            mPaint.setAntiAlias(true);
+            mPaint.setTextAlign(Align.CENTER);
+            mPaint.setTextSize(mGesturePreviewTextSize);
+            mPaint.setColor(mGesturePreviewTextColor);
+            return mPaint;
+        }
+
+        public Paint getBackgroundPaint() {
+            mPaint.setColor(mGesturePreviewColor);
+            return mPaint;
+        }
     }
 
-    protected final GesturePreviewTextParams mParams;
+    private final GesturePreviewTextParams mParams;
-    protected int mPreviewWordNum;
+    private final RectF mGesturePreviewRectangle = new RectF();
-    protected final RectF mGesturePreviewRectangle = new RectF();
+    private int mPreviewTextX;
-    protected int mHighlightedWordIndex;
+    private int mPreviewTextY;
-
+    private SuggestedWords mSuggestedWords = SuggestedWords.EMPTY;
-    private static final int PREVIEW_TEXT_ARRAY_CAPACITY = 10;
+    private final int[] mLastPointerCoords = CoordinateUtils.newInstance();
-    // These variables store the positions of preview words. In multi-preview mode, the gesture
-    // floating preview at most shows PREVIEW_TEXT_ARRAY_CAPACITY words.
-    protected final ResizableIntArray mPreviewTextXArray = new ResizableIntArray(
-            PREVIEW_TEXT_ARRAY_CAPACITY);
-    protected final ResizableIntArray mPreviewTextYArray = new ResizableIntArray(
-            PREVIEW_TEXT_ARRAY_CAPACITY);
-
-    protected SuggestedWords mSuggestedWords = SuggestedWords.EMPTY;
-    public final int[] mLastPointerCoords = CoordinateUtils.newInstance();
 
     public GestureFloatingPreviewText(final View drawingView, final TypedArray typedArray) {
         super(drawingView);
         mParams = new GesturePreviewTextParams(typedArray);
-        mHighlightedWordIndex = 0;
     }
 
     public void setSuggetedWords(final SuggestedWords suggestedWords) {
@@ -114,13 +113,6 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
         updatePreviewPosition();
     }
 
-    protected void drawText(final Canvas canvas, final String text, final float textX,
-            final float textY, final int color) {
-        final Paint paint = mParams.mTextPaint;
-        paint.setColor(color);
-        canvas.drawText(text, textX, textY, paint);
-    }
-
     @Override
     public void setPreviewPosition(final PointerTracker tracker) {
         final boolean needsToUpdateLastPointer =
@@ -142,14 +134,11 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
                 || TextUtils.isEmpty(mSuggestedWords.getWord(0))) {
             return;
         }
-        final Paint paint = mParams.mTextPaint;
-        paint.setColor(mParams.mGesturePreviewColor);
         final float round = mParams.mGesturePreviewRoundRadius;
-        canvas.drawRoundRect(mGesturePreviewRectangle, round, round, paint);
+        canvas.drawRoundRect(
+                mGesturePreviewRectangle, round, round, mParams.getBackgroundPaint());
         final String text = mSuggestedWords.getWord(0);
-        final int textX = mPreviewTextXArray.get(0);
+        canvas.drawText(text, mPreviewTextX, mPreviewTextY, mParams.getTextPaint());
-        final int textY = mPreviewTextYArray.get(0);
-        drawText(canvas, text, textX, textY, mParams.mGesturePreviewTextColor);
     }
 
     /**
@@ -162,11 +151,10 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
         }
         final String text = mSuggestedWords.getWord(0);
 
-        final Paint paint = mParams.mTextPaint;
         final RectF rectangle = mGesturePreviewRectangle;
 
         final int textHeight = mParams.mGesturePreviewTextHeight;
-        final float textWidth = paint.measureText(text);
+        final float textWidth = mParams.getTextPaint().measureText(text);
         final float hPad = mParams.mGesturePreviewHorizontalPadding;
         final float vPad = mParams.mGesturePreviewVerticalPadding;
         final float rectWidth = textWidth + hPad * 2.0f;
@@ -180,10 +168,8 @@ public class GestureFloatingPreviewText extends AbstractDrawingPreview {
                 - mParams.mGesturePreviewTextOffset - rectHeight;
         rectangle.set(rectX, rectY, rectX + rectWidth, rectY + rectHeight);
 
-        final int textX = (int)(rectX + hPad + textWidth / 2.0f);
+        mPreviewTextX = (int)(rectX + hPad + textWidth / 2.0f);
-        final int textY = (int)(rectY + vPad) + textHeight;
+        mPreviewTextY = (int)(rectY + vPad) + textHeight;
-        mPreviewTextXArray.add(0, textX);
-        mPreviewTextYArray.add(0, textY);
         // TODO: Should narrow the invalidate region.
         getDrawingView().invalidate();
     }