| /* |
| * Copyright 2017 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 androidx.recyclerview.selection; |
| |
| import android.graphics.Point; |
| import android.view.KeyEvent; |
| import android.view.MotionEvent; |
| |
| import androidx.annotation.NonNull; |
| |
| /** |
| * Utility methods for working with {@link MotionEvent} instances. |
| */ |
| final class MotionEvents { |
| |
| private MotionEvents() {} |
| |
| static boolean isMouseEvent(@NonNull MotionEvent e) { |
| return e.getToolType(0) == MotionEvent.TOOL_TYPE_MOUSE; |
| } |
| |
| static boolean isTouchEvent(@NonNull MotionEvent e) { |
| return e.getToolType(0) == MotionEvent.TOOL_TYPE_FINGER; |
| } |
| |
| static boolean isActionMove(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_MOVE; |
| } |
| |
| static boolean isActionDown(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_DOWN; |
| } |
| |
| static boolean isActionUp(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_UP; |
| } |
| |
| static boolean isActionPointerUp(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_POINTER_UP; |
| } |
| |
| @SuppressWarnings("unused") |
| static boolean isActionPointerDown(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_POINTER_DOWN; |
| } |
| |
| static boolean isActionCancel(@NonNull MotionEvent e) { |
| return e.getActionMasked() == MotionEvent.ACTION_CANCEL; |
| } |
| |
| static Point getOrigin(@NonNull MotionEvent e) { |
| return new Point((int) e.getX(), (int) e.getY()); |
| } |
| |
| static boolean isPrimaryMouseButtonPressed(@NonNull MotionEvent e) { |
| return isButtonPressed(e, MotionEvent.BUTTON_PRIMARY); |
| } |
| |
| static boolean isSecondaryMouseButtonPressed(@NonNull MotionEvent e) { |
| return isButtonPressed(e, MotionEvent.BUTTON_SECONDARY); |
| } |
| |
| static boolean isTertiaryMouseButtonPressed(@NonNull MotionEvent e) { |
| return isButtonPressed(e, MotionEvent.BUTTON_TERTIARY); |
| } |
| |
| // NOTE: Can replace this with MotionEvent.isButtonPressed once targeting 21 or higher. |
| private static boolean isButtonPressed(MotionEvent e, int button) { |
| if (button == 0) { |
| return false; |
| } |
| return (e.getButtonState() & button) == button; |
| } |
| |
| static boolean isShiftKeyPressed(@NonNull MotionEvent e) { |
| return hasBit(e.getMetaState(), KeyEvent.META_SHIFT_ON); |
| } |
| |
| static boolean isCtrlKeyPressed(@NonNull MotionEvent e) { |
| return hasBit(e.getMetaState(), KeyEvent.META_CTRL_ON); |
| } |
| |
| static boolean isAltKeyPressed(@NonNull MotionEvent e) { |
| return hasBit(e.getMetaState(), KeyEvent.META_ALT_ON); |
| } |
| |
| static boolean isTouchpadScroll(@NonNull MotionEvent e) { |
| // Touchpad inputs are treated as mouse inputs, and when scrolling, there are no buttons |
| // returned. |
| return isMouseEvent(e) && isActionMove(e) && e.getButtonState() == 0; |
| } |
| |
| /** |
| * Returns true if the event is a drag event (which is presumbaly, but not |
| * explicitly required to be a mouse event). |
| * @param e |
| */ |
| static boolean isPointerDragEvent(MotionEvent e) { |
| return isPrimaryMouseButtonPressed(e) |
| && isActionMove(e); |
| } |
| |
| private static boolean hasBit(int metaState, int bit) { |
| return (metaState & bit) != 0; |
| } |
| } |