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      1 #include <jni.h>
      2 #include "GraphicsJNI.h"
      3 
      4 #include "SkPathEffect.h"
      5 #include "SkCornerPathEffect.h"
      6 #include "SkDashPathEffect.h"
      7 #include "SkDiscretePathEffect.h"
      8 #include "Sk1DPathEffect.h"
      9 #include "SkTemplates.h"
     10 
     11 class SkPathEffectGlue {
     12 public:
     13 
     14     static void destructor(JNIEnv* env, jobject, SkPathEffect* effect) {
     15         SkSafeUnref(effect);
     16     }
     17 
     18     static SkPathEffect* Compose_constructor(JNIEnv* env, jobject,
     19                                    SkPathEffect* outer, SkPathEffect* inner) {
     20         return new SkComposePathEffect(outer, inner);
     21     }
     22 
     23     static SkPathEffect* Sum_constructor(JNIEnv* env, jobject,
     24                                   SkPathEffect* first, SkPathEffect* second) {
     25         return new SkSumPathEffect(first, second);
     26     }
     27 
     28     static SkPathEffect* Dash_constructor(JNIEnv* env, jobject,
     29                                       jfloatArray intervalArray, float phase) {
     30         AutoJavaFloatArray autoInterval(env, intervalArray);
     31         int     count = autoInterval.length() & ~1;  // even number
     32         float*  values = autoInterval.ptr();
     33 
     34         SkAutoSTMalloc<32, SkScalar>    storage(count);
     35         SkScalar*                       intervals = storage.get();
     36         for (int i = 0; i < count; i++) {
     37             intervals[i] = SkFloatToScalar(values[i]);
     38         }
     39         return new SkDashPathEffect(intervals, count, SkFloatToScalar(phase));
     40     }
     41 
     42     static SkPathEffect* OneD_constructor(JNIEnv* env, jobject,
     43                   const SkPath* shape, float advance, float phase, int style) {
     44         SkASSERT(shape != NULL);
     45         return new SkPath1DPathEffect(*shape, SkFloatToScalar(advance),
     46                      SkFloatToScalar(phase), (SkPath1DPathEffect::Style)style);
     47     }
     48 
     49     static SkPathEffect* Corner_constructor(JNIEnv* env, jobject, float radius){
     50         return new SkCornerPathEffect(SkFloatToScalar(radius));
     51     }
     52 
     53     static SkPathEffect* Discrete_constructor(JNIEnv* env, jobject,
     54                                               float length, float deviation) {
     55         return new SkDiscretePathEffect(SkFloatToScalar(length),
     56                                         SkFloatToScalar(deviation));
     57     }
     58 
     59 };
     60 
     61 ////////////////////////////////////////////////////////////////////////////////////////////////////////
     62 
     63 static JNINativeMethod gPathEffectMethods[] = {
     64     { "nativeDestructor", "(I)V", (void*)SkPathEffectGlue::destructor }
     65 };
     66 
     67 static JNINativeMethod gComposePathEffectMethods[] = {
     68     { "nativeCreate", "(II)I", (void*)SkPathEffectGlue::Compose_constructor }
     69 };
     70 
     71 static JNINativeMethod gSumPathEffectMethods[] = {
     72     { "nativeCreate", "(II)I", (void*)SkPathEffectGlue::Sum_constructor }
     73 };
     74 
     75 static JNINativeMethod gDashPathEffectMethods[] = {
     76     { "nativeCreate", "([FF)I", (void*)SkPathEffectGlue::Dash_constructor }
     77 };
     78 
     79 static JNINativeMethod gPathDashPathEffectMethods[] = {
     80     { "nativeCreate", "(IFFI)I", (void*)SkPathEffectGlue::OneD_constructor }
     81 };
     82 
     83 static JNINativeMethod gCornerPathEffectMethods[] = {
     84     { "nativeCreate", "(F)I", (void*)SkPathEffectGlue::Corner_constructor }
     85 };
     86 
     87 static JNINativeMethod gDiscretePathEffectMethods[] = {
     88     { "nativeCreate", "(FF)I", (void*)SkPathEffectGlue::Discrete_constructor }
     89 };
     90 
     91 #include <android_runtime/AndroidRuntime.h>
     92 
     93 #define REG(env, name, array)                                              \
     94     result = android::AndroidRuntime::registerNativeMethods(env, name, array, \
     95                                                   SK_ARRAY_COUNT(array));  \
     96     if (result < 0) return result
     97 
     98 int register_android_graphics_PathEffect(JNIEnv* env)
     99 {
    100     int result;
    101 
    102     REG(env, "android/graphics/PathEffect", gPathEffectMethods);
    103     REG(env, "android/graphics/ComposePathEffect", gComposePathEffectMethods);
    104     REG(env, "android/graphics/SumPathEffect", gSumPathEffectMethods);
    105     REG(env, "android/graphics/DashPathEffect", gDashPathEffectMethods);
    106     REG(env, "android/graphics/PathDashPathEffect", gPathDashPathEffectMethods);
    107     REG(env, "android/graphics/CornerPathEffect", gCornerPathEffectMethods);
    108     REG(env, "android/graphics/DiscretePathEffect", gDiscretePathEffectMethods);
    109 
    110     return 0;
    111 }
    112