19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.graphics; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * AvoidXfermode xfermode will draw the src everywhere except on top of the 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * opColor or, depending on the Mode, draw only on top of the opColor. 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class AvoidXfermode extends Xfermode { 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // these need to match the enum in SkAvoidXfermode.h on the native side 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public enum Mode { 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project AVOID (0), //!< draw everywhere except on the opColor 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project TARGET (1); //!< draw only on top of the opColor 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Mode(int nativeInt) { 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project this.nativeInt = nativeInt; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final int nativeInt; 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This xfermode will draw the src everywhere except on top of the opColor 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * or, depending on the Mode, draw only on top of the opColor. 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param opColor The color to avoid (or to target depending on Mode). Note 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * that the alpha in opColor is ignored. 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param tolerance How closely we compare a pixel to the opColor. 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 0 - only operate if exact match 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 255 - maximum gradation (blending) based on how 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * similar the pixel is to our opColor (max tolerance) 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * @param mode If we should avoid or target the opColor 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public AvoidXfermode(int opColor, int tolerance, Mode mode) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (tolerance < 0 || tolerance > 255) { 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new IllegalArgumentException("tolerance must be 0..255"); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project native_instance = nativeCreate(opColor, tolerance, mode.nativeInt); 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int nativeCreate(int opColor, int tolerance, 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int nativeMode); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 58