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      1 /*
      2  * Copyright 2010, 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 #define LOG_TAG "Configuration"
     18 
     19 #include <utils/Log.h>
     20 #include "utils/misc.h"
     21 
     22 #include "jni.h"
     23 #include <android_runtime/android_content_res_Configuration.h>
     24 #include "android_runtime/AndroidRuntime.h"
     25 
     26 namespace android {
     27 
     28 static struct {
     29     jfieldID mcc;
     30     jfieldID mnc;
     31     jfieldID locale;
     32     jfieldID screenLayout;
     33     jfieldID touchscreen;
     34     jfieldID keyboard;
     35     jfieldID keyboardHidden;
     36     jfieldID hardKeyboardHidden;
     37     jfieldID navigation;
     38     jfieldID navigationHidden;
     39     jfieldID orientation;
     40     jfieldID uiMode;
     41     jfieldID screenWidthDp;
     42     jfieldID screenHeightDp;
     43     jfieldID smallestScreenWidthDp;
     44 } gConfigurationClassInfo;
     45 
     46 void android_Configuration_getFromJava(
     47         JNIEnv* env, jobject clazz, struct AConfiguration* out) {
     48     out->mcc = env->GetIntField(clazz, gConfigurationClassInfo.mcc);
     49     out->mnc = env->GetIntField(clazz, gConfigurationClassInfo.mnc);
     50     out->screenLayout = env->GetIntField(clazz, gConfigurationClassInfo.screenLayout);
     51     out->touchscreen = env->GetIntField(clazz, gConfigurationClassInfo.touchscreen);
     52     out->keyboard = env->GetIntField(clazz, gConfigurationClassInfo.keyboard);
     53     out->navigation = env->GetIntField(clazz, gConfigurationClassInfo.navigation);
     54 
     55     out->inputFlags = env->GetIntField(clazz, gConfigurationClassInfo.keyboardHidden);
     56     int hardKeyboardHidden = env->GetIntField(clazz, gConfigurationClassInfo.hardKeyboardHidden);
     57     if (out->inputFlags == ACONFIGURATION_KEYSHIDDEN_NO
     58             && hardKeyboardHidden == 2) {
     59         out->inputFlags = ACONFIGURATION_KEYSHIDDEN_SOFT;
     60     }
     61     out->inputFlags |= env->GetIntField(clazz, gConfigurationClassInfo.navigationHidden)
     62             << ResTable_config::SHIFT_NAVHIDDEN;
     63 
     64     out->orientation = env->GetIntField(clazz, gConfigurationClassInfo.orientation);
     65     out->uiMode = env->GetIntField(clazz, gConfigurationClassInfo.uiMode);
     66 
     67     out->screenWidthDp = env->GetIntField(clazz, gConfigurationClassInfo.screenWidthDp);
     68     out->screenHeightDp = env->GetIntField(clazz, gConfigurationClassInfo.screenHeightDp);
     69     out->smallestScreenWidthDp = env->GetIntField(clazz,
     70             gConfigurationClassInfo.smallestScreenWidthDp);
     71 }
     72 
     73 #define FIND_CLASS(var, className) \
     74         var = env->FindClass(className); \
     75         LOG_FATAL_IF(! var, "Unable to find class " className);
     76 
     77 #define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \
     78         var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \
     79         LOG_FATAL_IF(! var, "Unable to find field " fieldName);
     80 
     81 int register_android_content_res_Configuration(JNIEnv* env)
     82 {
     83     jclass clazz;
     84     FIND_CLASS(clazz, "android/content/res/Configuration");
     85 
     86     GET_FIELD_ID(gConfigurationClassInfo.mcc, clazz,
     87             "mcc", "I");
     88     GET_FIELD_ID(gConfigurationClassInfo.mnc, clazz,
     89             "mnc", "I");
     90     GET_FIELD_ID(gConfigurationClassInfo.locale, clazz,
     91             "locale", "Ljava/util/Locale;");
     92     GET_FIELD_ID(gConfigurationClassInfo.screenLayout, clazz,
     93             "screenLayout", "I");
     94     GET_FIELD_ID(gConfigurationClassInfo.touchscreen, clazz,
     95             "touchscreen", "I");
     96     GET_FIELD_ID(gConfigurationClassInfo.keyboard, clazz,
     97             "keyboard", "I");
     98     GET_FIELD_ID(gConfigurationClassInfo.keyboardHidden, clazz,
     99             "keyboardHidden", "I");
    100     GET_FIELD_ID(gConfigurationClassInfo.hardKeyboardHidden, clazz,
    101             "hardKeyboardHidden", "I");
    102     GET_FIELD_ID(gConfigurationClassInfo.navigation, clazz,
    103             "navigation", "I");
    104     GET_FIELD_ID(gConfigurationClassInfo.navigationHidden, clazz,
    105             "navigationHidden", "I");
    106     GET_FIELD_ID(gConfigurationClassInfo.orientation, clazz,
    107             "orientation", "I");
    108     GET_FIELD_ID(gConfigurationClassInfo.uiMode, clazz,
    109             "uiMode", "I");
    110     GET_FIELD_ID(gConfigurationClassInfo.screenWidthDp, clazz,
    111             "screenWidthDp", "I");
    112     GET_FIELD_ID(gConfigurationClassInfo.screenHeightDp, clazz,
    113             "screenHeightDp", "I");
    114     GET_FIELD_ID(gConfigurationClassInfo.smallestScreenWidthDp, clazz,
    115             "smallestScreenWidthDp", "I");
    116 
    117     return 0;
    118 }
    119 
    120 }; // namespace android
    121