PathEffect.cpp revision ed6b9dff563c5e22f040ff37e12c0d771e0478ae 
1#include <jni.h>
2#include "GraphicsJNI.h"
3
4#include "core_jni_helpers.h"
5
6#include "SkPathEffect.h"
7#include "SkCornerPathEffect.h"
8#include "SkDashPathEffect.h"
9#include "SkDiscretePathEffect.h"
10#include "Sk1DPathEffect.h"
11#include "SkTemplates.h"
12
13class SkPathEffectGlue {
14public:
15
16    static void destructor(JNIEnv* env, jobject, jlong effectHandle) {
17        SkPathEffect* effect = reinterpret_cast<SkPathEffect*>(effectHandle);
18        SkSafeUnref(effect);
19    }
20
21    static jlong Compose_constructor(JNIEnv* env, jobject,
22                                     jlong outerHandle, jlong innerHandle) {
23        SkPathEffect* outer = reinterpret_cast<SkPathEffect*>(outerHandle);
24        SkPathEffect* inner = reinterpret_cast<SkPathEffect*>(innerHandle);
25        SkPathEffect* effect = SkComposePathEffect::Create(outer, inner);
26        return reinterpret_cast<jlong>(effect);
27    }
28
29    static jlong Sum_constructor(JNIEnv* env, jobject,
30                                 jlong firstHandle, jlong secondHandle) {
31        SkPathEffect* first = reinterpret_cast<SkPathEffect*>(firstHandle);
32        SkPathEffect* second = reinterpret_cast<SkPathEffect*>(secondHandle);
33        SkPathEffect* effect = SkSumPathEffect::Create(first, second);
34        return reinterpret_cast<jlong>(effect);
35    }
36
37    static jlong Dash_constructor(JNIEnv* env, jobject,
38                                      jfloatArray intervalArray, jfloat phase) {
39        AutoJavaFloatArray autoInterval(env, intervalArray);
40        int         count = autoInterval.length() & ~1;  // even number
41#ifdef SK_SCALAR_IS_FLOAT
42        SkScalar*   intervals = autoInterval.ptr();
43#else
44        #error Need to convert float array to SkScalar array before calling the following function.
45#endif
46        SkPathEffect* effect = SkDashPathEffect::Create(intervals, count, phase);
47        return reinterpret_cast<jlong>(effect);
48    }
49
50    static jlong OneD_constructor(JNIEnv* env, jobject,
51                  jlong shapeHandle, jfloat advance, jfloat phase, jint style) {
52        const SkPath* shape = reinterpret_cast<SkPath*>(shapeHandle);
53        SkASSERT(shape != NULL);
54        SkPathEffect* effect = SkPath1DPathEffect::Create(*shape, advance, phase,
55                (SkPath1DPathEffect::Style)style);
56        return reinterpret_cast<jlong>(effect);
57    }
58
59    static jlong Corner_constructor(JNIEnv* env, jobject, jfloat radius){
60        SkPathEffect* effect = SkCornerPathEffect::Create(radius);
61        return reinterpret_cast<jlong>(effect);
62    }
63
64    static jlong Discrete_constructor(JNIEnv* env, jobject,
65                                      jfloat length, jfloat deviation) {
66        SkPathEffect* effect = SkDiscretePathEffect::Create(length, deviation);
67        return reinterpret_cast<jlong>(effect);
68    }
69
70};
71
72////////////////////////////////////////////////////////////////////////////////////////////////////////
73
74static JNINativeMethod gPathEffectMethods[] = {
75    { "nativeDestructor", "(J)V", (void*)SkPathEffectGlue::destructor }
76};
77
78static JNINativeMethod gComposePathEffectMethods[] = {
79    { "nativeCreate", "(JJ)J", (void*)SkPathEffectGlue::Compose_constructor }
80};
81
82static JNINativeMethod gSumPathEffectMethods[] = {
83    { "nativeCreate", "(JJ)J", (void*)SkPathEffectGlue::Sum_constructor }
84};
85
86static JNINativeMethod gDashPathEffectMethods[] = {
87    { "nativeCreate", "([FF)J", (void*)SkPathEffectGlue::Dash_constructor }
88};
89
90static JNINativeMethod gPathDashPathEffectMethods[] = {
91    { "nativeCreate", "(JFFI)J", (void*)SkPathEffectGlue::OneD_constructor }
92};
93
94static JNINativeMethod gCornerPathEffectMethods[] = {
95    { "nativeCreate", "(F)J", (void*)SkPathEffectGlue::Corner_constructor }
96};
97
98static JNINativeMethod gDiscretePathEffectMethods[] = {
99    { "nativeCreate", "(FF)J", (void*)SkPathEffectGlue::Discrete_constructor }
100};
101
102int register_android_graphics_PathEffect(JNIEnv* env)
103{
104    android::RegisterMethodsOrDie(env, "android/graphics/PathEffect", gPathEffectMethods,
105                         NELEM(gPathEffectMethods));
106    android::RegisterMethodsOrDie(env, "android/graphics/ComposePathEffect",
107                                  gComposePathEffectMethods, NELEM(gComposePathEffectMethods));
108    android::RegisterMethodsOrDie(env, "android/graphics/SumPathEffect", gSumPathEffectMethods,
109                                  NELEM(gSumPathEffectMethods));
110    android::RegisterMethodsOrDie(env, "android/graphics/DashPathEffect", gDashPathEffectMethods,
111                                  NELEM(gDashPathEffectMethods));
112    android::RegisterMethodsOrDie(env, "android/graphics/PathDashPathEffect",
113                                  gPathDashPathEffectMethods, NELEM(gPathDashPathEffectMethods));
114    android::RegisterMethodsOrDie(env, "android/graphics/CornerPathEffect",
115                                  gCornerPathEffectMethods, NELEM(gCornerPathEffectMethods));
116    android::RegisterMethodsOrDie(env, "android/graphics/DiscretePathEffect",
117                                  gDiscretePathEffectMethods, NELEM(gDiscretePathEffectMethods));
118
119    return 0;
120}
121