List of usage examples for android.view MotionEvent getHistoricalSize
public final float getHistoricalSize(int pointerIndex, int pos)
From source file:Main.java
public static float getSize(MotionEvent event, int index) { final int historySize = event.getHistorySize(); return historySize == 0 ? event.getSize(index) : event.getHistoricalSize(index, historySize - 1); }
From source file:com.mylikes.likes.etchasketch.Slate.java
@SuppressLint("NewApi") @Override/*from ww w . j av a2 s .c om*/ public boolean onTouchEvent(MotionEvent event) { final int action = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) ? event.getActionMasked() : event.getAction(); int N = event.getHistorySize(); int P = event.getPointerCount(); long time = event.getEventTime(); mEmpty = false; // starting a new touch? commit the previous state of the canvas if (action == MotionEvent.ACTION_DOWN) { commitStroke(); } if (mZoomMode) { return false; } int pointerIndex = MotionEventCompat.getActionIndex(event); int pointerId = event.getPointerId(pointerIndex); if (moveMode) { if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN) { if (firstFinger != null) { MotionEvent.PointerCoords coords1 = new MotionEvent.PointerCoords(); event.getPointerCoords(0, coords1); Log.d(TAG, "coords1: " + coords1.x + " " + coords1.y); MotionEvent.PointerCoords coords2 = new MotionEvent.PointerCoords(); event.getPointerCoords(1, coords2); firstFinger.set(coords1.x, coords1.y); secondFinger = new PointF(coords2.x, coords2.y); } else { touchStartTime = System.currentTimeMillis(); moveDrawingStartX = event.getX(); moveDrawingStartY = event.getY(); int i = 0; moveDrawingIndex = -1; resizeDrawingIndex = -1; resizeDrawingCorner = null; if (selectedDrawing != null) { moveDrawingIndex = 0; } if (i >= overlays.size()) { return true; } Log.d(TAG, "Start dragging overlay"); firstFinger = new PointF(event.getX(), event.getY()); } return true; } else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP) { if (secondFinger != null) { secondFinger = null; MotionEvent.PointerCoords coords1 = new MotionEvent.PointerCoords(); event.getPointerCoords(0, coords1); moveDrawingStartX = coords1.x; moveDrawingStartY = coords1.y; return true; } if (firstFinger != null) { firstFinger = null; } if (moveDrawingIndex == -1 && resizeDrawingIndex == -1 && System.currentTimeMillis() - touchStartTime < 400 && Math.abs(event.getX() - moveDrawingStartX) + Math.abs(event.getY() - moveDrawingStartY) < 8) { if (resizeDrawingCorner != null && selectedDrawing != null) { if (resizeDrawingCorner == "tl" && selectedDrawing instanceof TextDrawing) { //promptForText((TextDrawing)selectedDrawing); } else if (resizeDrawingCorner == "tr") { //maybeRemoveDrawing(selectedDrawing); } } else { //promptForText((int) event.getX(), (int) event.getY()); } } moveDrawingIndex = -1; Log.d(TAG, "Stop dragging overlay"); // TODO: add to undo stack return true; } else if (firstFinger != null && secondFinger != null && action == MotionEvent.ACTION_MOVE) { MotionEvent.PointerCoords coords1 = new MotionEvent.PointerCoords(); event.getPointerCoords(0, coords1); Log.d(TAG, "coords1: " + coords1.x + " " + coords1.y); MotionEvent.PointerCoords coords2 = new MotionEvent.PointerCoords(); event.getPointerCoords(1, coords2); Log.d(TAG, "coords2: " + coords2.x + " " + coords2.y); float xDist = firstFinger.x - secondFinger.x, yDist = firstFinger.y - secondFinger.y; float origAngle = (float) Math.atan2(yDist, xDist); if (origAngle < 0) origAngle += Math.PI * 2; float lastDistance = (float) Math.sqrt(xDist * xDist + yDist * yDist); xDist = coords2.x - coords1.x; yDist = coords2.y - coords1.y; float newDistance = (float) Math.sqrt(xDist * xDist + yDist * yDist); float newAngle = (float) Math.atan2(yDist, xDist); if (newAngle < 0) newAngle += Math.PI * 2; if (newAngle - origAngle > Math.PI / 2) { origAngle += Math.PI; } else if (origAngle - newAngle > Math.PI / 2) { newAngle += Math.PI; } firstFinger.set(coords1.x, coords1.y); secondFinger = new PointF(coords2.x, coords2.y); if (selectedDrawing != null) { selectedDrawing.resizeBy(newDistance / lastDistance); selectedDrawing.rotateBy(newAngle - origAngle); invalidate(); } } else if (moveDrawingIndex >= 0 && moveDrawingIndex < overlays.size() && action == MotionEvent.ACTION_MOVE) { float x = event.getX(); float y = event.getY(); overlays.get(moveDrawingIndex).moveBy((int) ((x - moveDrawingStartX) * getDrawingDensity()), (int) ((y - moveDrawingStartY) * getDrawingDensity())); // TODO: only invalidate relevant Rect invalidate(); moveDrawingStartX = x; moveDrawingStartY = y; return true; } else if (resizeDrawingIndex >= 0 && resizeDrawingIndex < overlays.size() && action == MotionEvent.ACTION_MOVE) { float x = event.getX(); float y = event.getY(); overlays.get(resizeDrawingIndex).resizeCorner(resizeDrawingCorner, (int) (x - moveDrawingStartX), (int) (y - moveDrawingStartY)); // TODO: only invalidate relevant Rect invalidate(); moveDrawingStartX = x; moveDrawingStartY = y; return true; } return false; } if (action == MotionEvent.ACTION_DOWN || action == MotionEvent.ACTION_POINTER_DOWN || action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP) { int j = (Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO) ? event.getActionIndex() : 0; mTmpSpot.update(event.getX(j), event.getY(j), event.getSize(j), event.getPressure(j) + event.getSize(j), time, getToolTypeCompat(event, j)); mStrokes[event.getPointerId(j)].add(mTmpSpot); if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_POINTER_UP) { mStrokes[event.getPointerId(j)].finish(time); } } else if (action == MotionEvent.ACTION_MOVE) { if (dbgX >= 0) { dbgRect.set(dbgX - 1, dbgY - 1, dbgX + 1, dbgY + 1); } for (int i = 0; i < N; i++) { for (int j = 0; j < P; j++) { mTmpSpot.update(event.getHistoricalX(j, i), event.getHistoricalY(j, i), event.getHistoricalSize(j, i), event.getHistoricalPressure(j, i) + event.getHistoricalSize(j, i), event.getHistoricalEventTime(i), getToolTypeCompat(event, j)); if ((mDebugFlags & FLAG_DEBUG_STROKES) != 0) { if (dbgX >= 0) { //mTiledCanvas.drawLine(dbgX, dbgY, mTmpSpot.x, mTmpSpot.y, mDebugPaints[3]); } dbgX = mTmpSpot.x; dbgY = mTmpSpot.y; dbgRect.union(dbgX - 1, dbgY - 1, dbgX + 1, dbgY + 1); } mStrokes[event.getPointerId(j)].add(mTmpSpot); } } for (int j = 0; j < P; j++) { mTmpSpot.update(event.getX(j), event.getY(j), event.getSize(j), event.getPressure(j) + event.getSize(j), time, getToolTypeCompat(event, j)); if ((mDebugFlags & FLAG_DEBUG_STROKES) != 0) { if (dbgX >= 0) { //mTiledCanvas.drawLine(dbgX, dbgY, mTmpSpot.x, mTmpSpot.y, mDebugPaints[3]); } dbgX = mTmpSpot.x; dbgY = mTmpSpot.y; dbgRect.union(dbgX - 1, dbgY - 1, dbgX + 1, dbgY + 1); } mStrokes[event.getPointerId(j)].add(mTmpSpot); } if ((mDebugFlags & FLAG_DEBUG_STROKES) != 0) { Rect dirty = new Rect(); dbgRect.roundOut(dirty); invalidate(dirty); } } if (action == MotionEvent.ACTION_CANCEL || action == MotionEvent.ACTION_UP) { for (int j = 0; j < P; j++) { mStrokes[event.getPointerId(j)].finish(time); } dbgX = dbgY = -1; } return true; }