1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.view.shadow; 18 19 /** 20 * Constant values for shadow related configuration 21 */ 22 class ShadowConstants { 23 24 /** 25 * This is used as a factor by which to scale down the shadow bitmap. If we have world 26 * Width x Height, shadow bitmap will be Width/SCALE_DOWN x Height/SCALE_DOWN and during 27 * canvas draw the shadow will be scaled up, resulting faster perf (due to smaller bitmap) but 28 * blurrier (lower quality) shadow. 29 */ 30 public static final int SCALE_DOWN = 5; 31 32 public static final float MIN_ALPHA = 0.2f; 33 34 public static final int SPOT_SHADOW_RAYS = 40; 35 public static final int SPOT_SHADOW_LAYERS = 1; 36 public static final int SPOT_SHADOW_LIGHT_SOURCE_POINTS = 4; 37 public static final int SPOT_SHADOW_LIGHT_Z_HEIGHT_DP = 50 / SCALE_DOWN; 38 public static final int SPOT_SHADOW_LIGHT_Z_EPSILON = 10 / SCALE_DOWN; 39 public static final float SPOT_SHADOW_STRENGTH = 0.3f; 40 41 public static final float AMBIENT_SHADOW_EDGE_SCALE = 60f; 42 public static final float AMBIENT_SHADOW_SHADOW_BOUND = 0.02f * SCALE_DOWN; 43 public static final int AMBIENT_SHADOW_RAYS = 120; 44 public static final int AMBIENT_SHADOW_LAYERS = 1; 45 public static final float AMBIENT_SHADOW_STRENGTH = 1.0f; 46 47 public static final int COORDINATE_SIZE = 3; 48 public static final int RECT_VERTICES_SIZE = 4; 49 50 public static final int SPLICE_ROUNDED_EDGE = 5; 51 } 52
