frameworks/base/core/jni/android/graphics/PathEffect.cpp

   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         effect->safeUnref();
  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 int register_android_graphics_PathEffect(JNIEnv* env)
 100 {
 101     int result;
 102
 103     REG(env, "android/graphics/PathEffect", gPathEffectMethods);
 104     REG(env, "android/graphics/ComposePathEffect", gComposePathEffectMethods);
 105     REG(env, "android/graphics/SumPathEffect", gSumPathEffectMethods);
 106     REG(env, "android/graphics/DashPathEffect", gDashPathEffectMethods);
 107     REG(env, "android/graphics/PathDashPathEffect", gPathDashPathEffectMethods);
 108     REG(env, "android/graphics/CornerPathEffect", gCornerPathEffectMethods);
 109     REG(env, "android/graphics/DiscretePathEffect", gDiscretePathEffectMethods);
 110
 111     return 0;
 112 }
 113