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/*
Copyright (c) 2011, BogDan Vatra <bog_dan_ro@yahoo.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <jni.h>
#include <android/log.h>
#include <extract.h>
#include <alloca.h>
#define LOG_TAG "extractSyleInfo"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
#define LOGF(...) __android_log_print(ANDROID_LOG_FATAL,LOG_TAG,__VA_ARGS__)
const char * const NinePatchDrawableClassName = "android/graphics/drawable/NinePatchDrawable";
const char * const NinePatchFieldIDName = "mNinePatch";
static jfieldID m_ninePatchFieldID=0;
const char * const NinePatchClassName = "android/graphics/NinePatch";
const char * const ChunkFieldIDName = "mChunk";
static jfieldID m_chunkFieldID=0;
const char * const ClipStateClassName = "android/graphics/drawable/ClipDrawable$ClipState";
const char * const ClipStateDrawableFieldIDName = "mDrawable";
static jfieldID m_clipStateDrawableFieldID=0;
bool setup(JNIEnv * env, jobject /*obj*/)
{
jclass ninePatchClass = env->FindClass(NinePatchClassName);
if (!ninePatchClass)
{
LOGF("Unable to find class '%s'", NinePatchClassName);
return JNI_FALSE;
}
m_chunkFieldID = env->GetFieldID(ninePatchClass, ChunkFieldIDName, "[B");
if(!m_chunkFieldID)
{
LOGF("Unable to find field '%s'", ChunkFieldIDName);
return JNI_FALSE;
}
jclass ninePatchDrawableClass = env->FindClass(NinePatchDrawableClassName);
if (!ninePatchDrawableClass)
{
LOGF("Unable to find class '%s'", NinePatchDrawableClassName);
return JNI_FALSE;
}
m_ninePatchFieldID = env->GetFieldID(ninePatchDrawableClass, NinePatchFieldIDName, "Landroid/graphics/NinePatch;");
if(!m_ninePatchFieldID)
{
LOGF("Unable to find field '%s'", NinePatchFieldIDName);
return JNI_FALSE;
}
jclass clipStateDrawableClass = env->FindClass(ClipStateClassName);
if (!clipStateDrawableClass)
{
LOGF("Unable to find class '%s'", ClipStateClassName);
return JNI_FALSE;
}
m_clipStateDrawableFieldID = env->GetFieldID(clipStateDrawableClass, ClipStateDrawableFieldIDName, "Landroid/graphics/drawable/Drawable;");
if(!m_ninePatchFieldID)
{
LOGF("Unable to find field '%s'", NinePatchFieldIDName);
return JNI_FALSE;
}
return JNI_TRUE;
}
static void printChunkInformation(Res_png_9patch* chunk)
{
LOGI("printChunkInformation x:%d , y:%d",chunk->numXDivs, chunk->numYDivs);
for (int x = 0; x < chunk->numXDivs; x ++)
LOGI("X CHUNK %d %d", x, chunk->xDivs[x]);
for (int y = 0; y < chunk->numYDivs; y ++)
LOGI("Y CHUNK %d %d", y, chunk->yDivs[y]);
LOGI("----");
}
extern "C" JNIEXPORT jintArray JNICALL Java_org_kde_necessitas_ministro_ExtractStyle_extractChunkInfo(JNIEnv * env, jobject obj, jbyteArray chunkObj)
{
size_t chunkSize = env->GetArrayLength(chunkObj);
void* storage = alloca(chunkSize);
env->GetByteArrayRegion(chunkObj, 0, chunkSize,
reinterpret_cast<jbyte*>(storage));
if (!env->ExceptionCheck())
{
// need to deserialize the chunk
Res_png_9patch* chunk = static_cast<Res_png_9patch*>(storage);
Res_png_9patch::deserialize(chunk);
// printChunkInformation(chunk);
jintArray result;
size_t size = 3+chunk->numXDivs+chunk->numYDivs+chunk->numColors;
result = env->NewIntArray(size);
if (!result)
return 0;
jint *data = (jint*)malloc(sizeof(jint)*size);
size_t pos = 0;
data[pos++]=chunk->numXDivs;
data[pos++]=chunk->numYDivs;
data[pos++]=chunk->numColors;
for (int x = 0; x <chunk->numXDivs; x ++)
data[pos++]=chunk->xDivs[x];
for (int y = 0; y <chunk->numYDivs; y ++)
data[pos++]=chunk->yDivs[y];
for (int c = 0; c <chunk->numColors; c ++)
data[pos++]=chunk->colors[c];
env->SetIntArrayRegion(result, 0, size, data);
free(data);
return result;
}
return 0;
}
extern "C" JNIEXPORT jintArray JNICALL Java_org_kde_necessitas_ministro_ExtractStyle_extract9PatchInfo(JNIEnv * env, jobject obj, jobject ninePatchObject)
{
if (!m_ninePatchFieldID || !m_chunkFieldID)
if (!setup(env, obj))
return 0;
return Java_org_kde_necessitas_ministro_ExtractStyle_extractChunkInfo(env, obj
,reinterpret_cast<jbyteArray>(env->GetObjectField(
env->GetObjectField(ninePatchObject, m_ninePatchFieldID)
, m_chunkFieldID)) );
}
extern "C" JNIEXPORT jobject JNICALL Java_org_kde_necessitas_ministro_ExtractStyle_getClipStateDrawableObject(JNIEnv * env, jobject obj, jobject clipStateObject)
{
if (!m_ninePatchFieldID || !m_chunkFieldID || !m_clipStateDrawableFieldID)
if (!setup(env, obj))
return 0;
return env->GetObjectField(clipStateObject, m_clipStateDrawableFieldID);
}
// The following part was shamelessly stolen from ResourceTypes.cpp Android's sources
static void deserializeInternal(const void* inData, Res_png_9patch* outData) {
char* patch = (char*) inData;
if (inData != outData) {
memmove(&outData->wasDeserialized, patch, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
memmove(&outData->paddingLeft, patch + 12, 4); // copy wasDeserialized, numXDivs, numYDivs, numColors
}
outData->wasDeserialized = true;
char* data = (char*)outData;
data += sizeof(Res_png_9patch);
outData->xDivs = (int32_t*) data;
data += outData->numXDivs * sizeof(int32_t);
outData->yDivs = (int32_t*) data;
data += outData->numYDivs * sizeof(int32_t);
outData->colors = (uint32_t*) data;
}
Res_png_9patch* Res_png_9patch::deserialize(const void* inData)
{
if (sizeof(void*) != sizeof(int32_t)) {
LOGE("Cannot deserialize on non 32-bit system\n");
return NULL;
}
deserializeInternal(inData, (Res_png_9patch*) inData);
return (Res_png_9patch*) inData;
}
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