diff options
| -rw-r--r-- | services/core/java/com/android/server/input/debug/TouchpadVisualizationView.java | 42 |
1 files changed, 27 insertions, 15 deletions
diff --git a/services/core/java/com/android/server/input/debug/TouchpadVisualizationView.java b/services/core/java/com/android/server/input/debug/TouchpadVisualizationView.java index 2ed6f44f532e..67c3621b7c8c 100644 --- a/services/core/java/com/android/server/input/debug/TouchpadVisualizationView.java +++ b/services/core/java/com/android/server/input/debug/TouchpadVisualizationView.java @@ -39,35 +39,43 @@ public class TouchpadVisualizationView extends View { TouchpadHardwareState mLatestHardwareState = new TouchpadHardwareState(0, 0, 0, 0, new TouchpadFingerState[]{}); - private final Paint mOvalPaint; + private final Paint mOvalStrokePaint; + private final Paint mOvalFillPaint; + private final RectF mTempOvalRect = new RectF(); public TouchpadVisualizationView(Context context, TouchpadHardwareProperties touchpadHardwareProperties) { super(context); mTouchpadHardwareProperties = touchpadHardwareProperties; mScaleFactor = 1; - mOvalPaint = new Paint(); - mOvalPaint.setAntiAlias(true); - mOvalPaint.setARGB(255, 0, 0, 0); - mOvalPaint.setStyle(Paint.Style.STROKE); + mOvalStrokePaint = new Paint(); + mOvalStrokePaint.setAntiAlias(true); + mOvalStrokePaint.setARGB(255, 0, 0, 0); + mOvalStrokePaint.setStyle(Paint.Style.STROKE); + mOvalFillPaint = new Paint(); + mOvalFillPaint.setAntiAlias(true); + mOvalFillPaint.setARGB(255, 0, 0, 0); } - private final RectF mOvalRect = new RectF(); - - private void drawOval(Canvas canvas, float x, float y, float major, float minor, float angle, - Paint paint) { + private void drawOval(Canvas canvas, float x, float y, float major, float minor, float angle) { canvas.save(Canvas.MATRIX_SAVE_FLAG); canvas.rotate(angle, x, y); - mOvalRect.left = x - minor / 2; - mOvalRect.right = x + minor / 2; - mOvalRect.top = y - major / 2; - mOvalRect.bottom = y + major / 2; - canvas.drawOval(mOvalRect, paint); + mTempOvalRect.left = x - minor / 2; + mTempOvalRect.right = x + minor / 2; + mTempOvalRect.top = y - major / 2; + mTempOvalRect.bottom = y + major / 2; + canvas.drawOval(mTempOvalRect, mOvalStrokePaint); + canvas.drawOval(mTempOvalRect, mOvalFillPaint); canvas.restore(); } @Override protected void onDraw(Canvas canvas) { + float maximumPressure = 0; + for (TouchpadFingerState touchpadFingerState : mLatestHardwareState.getFingerStates()) { + maximumPressure = Math.max(maximumPressure, touchpadFingerState.getPressure()); + } + for (TouchpadFingerState touchpadFingerState : mLatestHardwareState.getFingerStates()) { float newX = translateRange(mTouchpadHardwareProperties.getLeft(), mTouchpadHardwareProperties.getRight(), 0, getWidth(), @@ -88,7 +96,11 @@ public class TouchpadVisualizationView extends View { float newTouchMajor = touchpadFingerState.getTouchMajor() * mScaleFactor / resY; float newTouchMinor = touchpadFingerState.getTouchMinor() * mScaleFactor / resX; - drawOval(canvas, newX, newY, newTouchMajor, newTouchMinor, newAngle, mOvalPaint); + float pressureToOpacity = translateRange(0, maximumPressure, 0, 255, + touchpadFingerState.getPressure()); + mOvalFillPaint.setAlpha((int) pressureToOpacity); + + drawOval(canvas, newX, newY, newTouchMajor, newTouchMinor, newAngle); } } |