18cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn/* 28cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** 38cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** Copyright 2006, The Android Open Source Project 48cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** 58cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** Licensed under the Apache License, Version 2.0 (the "License"); 68cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** you may not use this file except in compliance with the License. 78cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** You may obtain a copy of the License at 88cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** 98cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** http://www.apache.org/licenses/LICENSE-2.0 108cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** 118cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** Unless required by applicable law or agreed to in writing, software 128cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** distributed under the License is distributed on an "AS IS" BASIS, 138cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 148cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** See the License for the specific language governing permissions and 158cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn** limitations under the License. 168cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn*/ 178cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn 188cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn#define LOG_TAG "9patch" 198cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn#define LOG_NDEBUG 1 208cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn 21b13b9bdad2baf6ad1ec2e56b6b7598fa20f55fc4Mathias Agopian#include <androidfw/ResourceTypes.h> 228cae124af2142687a6833dbaab8a43df6dd67b43Dianne Hackborn#include <utils/Log.h> 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 24e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy#include <Caches.h> 25e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 2611ea33471e1a14a8594f0b2cd012d86340dd3bd8Dianne Hackborn#include "SkCanvas.h" 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "SkRegion.h" 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "GraphicsJNI.h" 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include "JNIHelp.h" 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 32e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guyextern void NinePatch_Draw(SkCanvas* canvas, const SkRect& bounds, const SkBitmap& bitmap, 33e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy const android::Res_png_9patch& chunk, const SkPaint* paint, SkRegion** outRegion); 3469a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectusing namespace android; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 37e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy/** 38e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy * IMPORTANT NOTE: 9patch chunks can be manipuated either as an array of bytes 39e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy * or as a Res_png_9patch instance. It is important to note that the size of the 40e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy * array required to hold a 9patch chunk is greater than sizeof(Res_png_9patch). 41e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy * The code below manipulates chunks as Res_png_9patch* types to draw and as 42e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy * int8_t* to allocate and free the backing storage. 43e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy */ 44e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass SkNinePatchGlue { 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic: 47e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy static jboolean isNinePatchChunk(JNIEnv* env, jobject, jbyteArray obj) { 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (NULL == obj) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (env->GetArrayLength(obj) < (int)sizeof(Res_png_9patch)) { 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project const jbyte* array = env->GetByteArrayElements(obj, 0); 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (array != NULL) { 56e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy const Res_png_9patch* chunk = reinterpret_cast<const Res_png_9patch*>(array); 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int8_t wasDeserialized = chunk->wasDeserialized; 58e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy env->ReleaseByteArrayElements(obj, const_cast<jbyte*>(array), JNI_ABORT); 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return wasDeserialized != -1; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 64e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy static int8_t* validateNinePatchChunk(JNIEnv* env, jobject, jint, jbyteArray obj) { 65e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy size_t chunkSize = env->GetArrayLength(obj); 66e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy if (chunkSize < (int) (sizeof(Res_png_9patch))) { 6769a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes jniThrowRuntimeException(env, "Array too small for chunk."); 68e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy return NULL; 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 71e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy int8_t* storage = new int8_t[chunkSize]; 72e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy // This call copies the content of the jbyteArray 73e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy env->GetByteArrayRegion(obj, 0, chunkSize, reinterpret_cast<jbyte*>(storage)); 74e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy // Deserialize in place, return the array we just allocated 75e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy return (int8_t*) Res_png_9patch::deserialize(storage); 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 78e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy static void finalize(JNIEnv* env, jobject, int8_t* patch) { 79e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy#ifdef USE_OPENGL_RENDERER 80e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy if (android::uirenderer::Caches::hasInstance()) { 81e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy Res_png_9patch* p = (Res_png_9patch*) patch; 82e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy android::uirenderer::Caches::getInstance().resourceCache.destructor(p); 83e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy return; 84e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy } 85e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy#endif // USE_OPENGL_RENDERER 86e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy delete[] patch; 87e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy } 88e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 89e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy static void draw(JNIEnv* env, SkCanvas* canvas, SkRect& bounds, const SkBitmap* bitmap, 90e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy Res_png_9patch* chunk, const SkPaint* paint, jint destDensity, jint srcDensity) { 91e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy if (destDensity == srcDensity || destDensity == 0 || srcDensity == 0) { 92e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy ALOGV("Drawing unscaled 9-patch: (%g,%g)-(%g,%g)", 93e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkScalarToFloat(bounds.fLeft), SkScalarToFloat(bounds.fTop), 94e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkScalarToFloat(bounds.fRight), SkScalarToFloat(bounds.fBottom)); 95e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy NinePatch_Draw(canvas, bounds, *bitmap, *chunk, paint, NULL); 96e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy } else { 97e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy canvas->save(); 98e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 99e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkScalar scale = SkFloatToScalar(destDensity / (float)srcDensity); 100e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy canvas->translate(bounds.fLeft, bounds.fTop); 101e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy canvas->scale(scale, scale); 102e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 103e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy bounds.fRight = SkScalarDiv(bounds.fRight-bounds.fLeft, scale); 104e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy bounds.fBottom = SkScalarDiv(bounds.fBottom-bounds.fTop, scale); 105e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy bounds.fLeft = bounds.fTop = 0; 106e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 107e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy ALOGV("Drawing scaled 9-patch: (%g,%g)-(%g,%g) srcDensity=%d destDensity=%d", 108e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkScalarToFloat(bounds.fLeft), SkScalarToFloat(bounds.fTop), 109e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkScalarToFloat(bounds.fRight), SkScalarToFloat(bounds.fBottom), 110e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy srcDensity, destDensity); 111e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 112e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy NinePatch_Draw(canvas, bounds, *bitmap, *chunk, paint, NULL); 113e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 114e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy canvas->restore(); 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 11669a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes } 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static void drawF(JNIEnv* env, jobject, SkCanvas* canvas, jobject boundsRectF, 119e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy const SkBitmap* bitmap, Res_png_9patch* chunk, const SkPaint* paint, 120e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy jint destDensity, jint srcDensity) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(canvas); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(boundsRectF); 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(bitmap); 124e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkASSERT(chunk); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // paint is optional 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 127e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkRect bounds; 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project GraphicsJNI::jrectf_to_rect(env, boundsRectF, &bounds); 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 130e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy draw(env, canvas, bounds, bitmap, chunk, paint, destDensity, srcDensity); 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 13269a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static void drawI(JNIEnv* env, jobject, SkCanvas* canvas, jobject boundsRect, 134e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy const SkBitmap* bitmap, Res_png_9patch* chunk, const SkPaint* paint, 135e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy jint destDensity, jint srcDensity) { 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(canvas); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(boundsRect); 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(bitmap); 139e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkASSERT(chunk); 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // paint is optional 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 142e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkRect bounds; 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project GraphicsJNI::jrect_to_rect(env, boundsRect, &bounds); 144e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy draw(env, canvas, bounds, bitmap, chunk, paint, destDensity, srcDensity); 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 14669a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes 147e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy static jint getTransparentRegion(JNIEnv* env, jobject, const SkBitmap* bitmap, 148e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy Res_png_9patch* chunk, jobject boundsRect) { 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(bitmap); 150e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkASSERT(chunk); 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project SkASSERT(boundsRect); 15269a017bc1d1649350f830dfada5c6ed5eac0b770Elliott Hughes 153e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkRect bounds; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project GraphicsJNI::jrect_to_rect(env, boundsRect, &bounds); 155e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 156e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy SkRegion* region = NULL; 157e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy NinePatch_Draw(NULL, bounds, *bitmap, *chunk, NULL, ®ion); 158e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy 159e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy return (jint) region; 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project///////////////////////////////////////////////////////////////////////////////////////// 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project#include <android_runtime/AndroidRuntime.h> 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectstatic JNINativeMethod gNinePatchMethods[] = { 169e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "isNinePatchChunk", "([B)Z", (void*) SkNinePatchGlue::isNinePatchChunk }, 170e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "validateNinePatchChunk", "(I[B)I", (void*) SkNinePatchGlue::validateNinePatchChunk }, 171e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "nativeFinalize", "(I)V", (void*) SkNinePatchGlue::finalize }, 172e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "nativeDraw", "(ILandroid/graphics/RectF;IIIII)V", (void*) SkNinePatchGlue::drawF }, 173e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "nativeDraw", "(ILandroid/graphics/Rect;IIIII)V", (void*) SkNinePatchGlue::drawI }, 174e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy { "nativeGetTransparentRegion", "(IILandroid/graphics/Rect;)I", 175e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy (void*) SkNinePatchGlue::getTransparentRegion } 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project}; 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 178e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guyint register_android_graphics_NinePatch(JNIEnv* env) { 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return android::AndroidRuntime::registerNativeMethods(env, 180e3b0a0117a2ab4118f868a731b238fe8f2430276Romain Guy "android/graphics/NinePatch", gNinePatchMethods, SK_ARRAY_COUNT(gNinePatchMethods)); 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 182