Shader.cpp revision c1469f39b571f5660346fc837ac30b19d7651a43
1#include <jni.h> 2#include "GraphicsJNI.h" 3 4#include "SkShader.h" 5#include "SkGradientShader.h" 6#include "SkPorterDuff.h" 7#include "SkComposeShader.h" 8#include "SkTemplates.h" 9#include "SkXfermode.h" 10 11#include <SkiaShader.h> 12#include <Caches.h> 13 14using namespace android::uirenderer; 15 16static struct { 17 jclass clazz; 18 jfieldID shader; 19} gShaderClassInfo; 20 21static void ThrowIAE_IfNull(JNIEnv* env, void* ptr) { 22 if (NULL == ptr) { 23 doThrowIAE(env); 24 } 25} 26 27static void Color_RGBToHSV(JNIEnv* env, jobject, jint red, jint green, jint blue, jfloatArray hsvArray) 28{ 29 SkScalar hsv[3]; 30 SkRGBToHSV(red, green, blue, hsv); 31 32 AutoJavaFloatArray autoHSV(env, hsvArray, 3); 33 float* values = autoHSV.ptr(); 34 for (int i = 0; i < 3; i++) { 35 values[i] = SkScalarToFloat(hsv[i]); 36 } 37} 38 39static jint Color_HSVToColor(JNIEnv* env, jobject, jint alpha, jfloatArray hsvArray) 40{ 41 AutoJavaFloatArray autoHSV(env, hsvArray, 3); 42#ifdef SK_SCALAR_IS_FLOAT 43 SkScalar* hsv = autoHSV.ptr(); 44#else 45 #error Need to convert float array to SkScalar array before calling the following function. 46#endif 47 48 return static_cast<jint>(SkHSVToColor(alpha, hsv)); 49} 50 51/////////////////////////////////////////////////////////////////////////////////////////////// 52 53static void Shader_destructor(JNIEnv* env, jobject o, jlong shaderHandle, jlong shaderWithLMHandle) 54{ 55 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle); 56 SkSafeUnref(shader); 57} 58 59static void Shader_setLocalMatrix(JNIEnv* env, jobject o, jlong shaderHandle, jlong matrixHandle) 60{ 61 SkShader* shader = reinterpret_cast<SkShader*>(shaderHandle); 62 const SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle); 63 if (shader) { 64 if (matrix) { 65 shader->setLocalMatrix(*matrix); 66 } else { 67 shader->resetLocalMatrix(); 68 } 69 shader->setGenerationID(shader->getGenerationID() + 1); 70 } 71} 72 73/////////////////////////////////////////////////////////////////////////////////////////////// 74 75static jlong BitmapShader_constructor(JNIEnv* env, jobject o, jlong bitmapHandle, 76 jint tileModeX, jint tileModeY) 77{ 78 const SkBitmap* bitmap = reinterpret_cast<SkBitmap*>(bitmapHandle); 79 SkShader* s = SkShader::CreateBitmapShader(*bitmap, 80 (SkShader::TileMode)tileModeX, 81 (SkShader::TileMode)tileModeY); 82 83 ThrowIAE_IfNull(env, s); 84 return reinterpret_cast<jlong>(s); 85} 86 87/////////////////////////////////////////////////////////////////////////////////////////////// 88 89static jlong LinearGradient_create1(JNIEnv* env, jobject o, 90 jfloat x0, jfloat y0, jfloat x1, jfloat y1, 91 jintArray colorArray, jfloatArray posArray, jint tileMode) 92{ 93 SkPoint pts[2]; 94 pts[0].set(x0, y0); 95 pts[1].set(x1, y1); 96 97 size_t count = env->GetArrayLength(colorArray); 98 const jint* colorValues = env->GetIntArrayElements(colorArray, NULL); 99 100 AutoJavaFloatArray autoPos(env, posArray, count); 101#ifdef SK_SCALAR_IS_FLOAT 102 SkScalar* pos = autoPos.ptr(); 103#else 104 #error Need to convert float array to SkScalar array before calling the following function. 105#endif 106 107 SkShader* shader = SkGradientShader::CreateLinear(pts, 108 reinterpret_cast<const SkColor*>(colorValues), pos, count, 109 static_cast<SkShader::TileMode>(tileMode)); 110 111 env->ReleaseIntArrayElements(colorArray, const_cast<jint*>(colorValues), JNI_ABORT); 112 ThrowIAE_IfNull(env, shader); 113 return reinterpret_cast<jlong>(shader); 114} 115 116static jlong LinearGradient_create2(JNIEnv* env, jobject o, 117 jfloat x0, jfloat y0, jfloat x1, jfloat y1, 118 jint color0, jint color1, jint tileMode) 119{ 120 SkPoint pts[2]; 121 pts[0].set(x0, y0); 122 pts[1].set(x1, y1); 123 124 SkColor colors[2]; 125 colors[0] = color0; 126 colors[1] = color1; 127 128 SkShader* s = SkGradientShader::CreateLinear(pts, colors, NULL, 2, (SkShader::TileMode)tileMode); 129 130 ThrowIAE_IfNull(env, s); 131 return reinterpret_cast<jlong>(s); 132} 133 134/////////////////////////////////////////////////////////////////////////////////////////////// 135 136static jlong RadialGradient_create1(JNIEnv* env, jobject, jfloat x, jfloat y, jfloat radius, 137 jintArray colorArray, jfloatArray posArray, jint tileMode) { 138 SkPoint center; 139 center.set(x, y); 140 141 size_t count = env->GetArrayLength(colorArray); 142 const jint* colorValues = env->GetIntArrayElements(colorArray, NULL); 143 144 AutoJavaFloatArray autoPos(env, posArray, count); 145#ifdef SK_SCALAR_IS_FLOAT 146 SkScalar* pos = autoPos.ptr(); 147#else 148 #error Need to convert float array to SkScalar array before calling the following function. 149#endif 150 151 SkShader* shader = SkGradientShader::CreateRadial(center, radius, 152 reinterpret_cast<const SkColor*>(colorValues), pos, count, 153 static_cast<SkShader::TileMode>(tileMode)); 154 env->ReleaseIntArrayElements(colorArray, const_cast<jint*>(colorValues), 155 JNI_ABORT); 156 157 ThrowIAE_IfNull(env, shader); 158 return reinterpret_cast<jlong>(shader); 159} 160 161static jlong RadialGradient_create2(JNIEnv* env, jobject, jfloat x, jfloat y, jfloat radius, 162 jint color0, jint color1, jint tileMode) { 163 SkPoint center; 164 center.set(x, y); 165 166 SkColor colors[2]; 167 colors[0] = color0; 168 colors[1] = color1; 169 170 SkShader* s = SkGradientShader::CreateRadial(center, radius, colors, NULL, 2, 171 (SkShader::TileMode)tileMode); 172 ThrowIAE_IfNull(env, s); 173 return reinterpret_cast<jlong>(s); 174} 175 176/////////////////////////////////////////////////////////////////////////////// 177 178static jlong SweepGradient_create1(JNIEnv* env, jobject, jfloat x, jfloat y, 179 jintArray jcolors, jfloatArray jpositions) { 180 size_t count = env->GetArrayLength(jcolors); 181 const jint* colors = env->GetIntArrayElements(jcolors, NULL); 182 183 AutoJavaFloatArray autoPos(env, jpositions, count); 184#ifdef SK_SCALAR_IS_FLOAT 185 SkScalar* pos = autoPos.ptr(); 186#else 187 #error Need to convert float array to SkScalar array before calling the following function. 188#endif 189 190 SkShader* shader = SkGradientShader::CreateSweep(x, y, 191 reinterpret_cast<const SkColor*>(colors), pos, count); 192 env->ReleaseIntArrayElements(jcolors, const_cast<jint*>(colors), 193 JNI_ABORT); 194 ThrowIAE_IfNull(env, shader); 195 return reinterpret_cast<jlong>(shader); 196} 197 198static jlong SweepGradient_create2(JNIEnv* env, jobject, jfloat x, jfloat y, 199 int color0, int color1) { 200 SkColor colors[2]; 201 colors[0] = color0; 202 colors[1] = color1; 203 SkShader* s = SkGradientShader::CreateSweep(x, y, colors, NULL, 2); 204 ThrowIAE_IfNull(env, s); 205 return reinterpret_cast<jlong>(s); 206} 207 208/////////////////////////////////////////////////////////////////////////////////////////////// 209 210static jlong ComposeShader_create1(JNIEnv* env, jobject o, 211 jlong shaderAHandle, jlong shaderBHandle, jlong modeHandle) 212{ 213 SkShader* shaderA = reinterpret_cast<SkShader *>(shaderAHandle); 214 SkShader* shaderB = reinterpret_cast<SkShader *>(shaderBHandle); 215 SkXfermode* mode = reinterpret_cast<SkXfermode *>(modeHandle); 216 SkShader* shader = new SkComposeShader(shaderA, shaderB, mode); 217 return reinterpret_cast<jlong>(shader); 218} 219 220static jlong ComposeShader_create2(JNIEnv* env, jobject o, 221 jlong shaderAHandle, jlong shaderBHandle, jint porterDuffModeHandle) 222{ 223 SkShader* shaderA = reinterpret_cast<SkShader *>(shaderAHandle); 224 SkShader* shaderB = reinterpret_cast<SkShader *>(shaderBHandle); 225 SkPorterDuff::Mode porterDuffMode = static_cast<SkPorterDuff::Mode>(porterDuffModeHandle); 226 SkAutoUnref au(SkPorterDuff::CreateXfermode(porterDuffMode)); 227 SkXfermode* mode = (SkXfermode*) au.get(); 228 SkShader* shader = new SkComposeShader(shaderA, shaderB, mode); 229 return reinterpret_cast<jlong>(shader); 230} 231 232/////////////////////////////////////////////////////////////////////////////////////////////// 233 234static JNINativeMethod gColorMethods[] = { 235 { "nativeRGBToHSV", "(III[F)V", (void*)Color_RGBToHSV }, 236 { "nativeHSVToColor", "(I[F)I", (void*)Color_HSVToColor } 237}; 238 239static JNINativeMethod gShaderMethods[] = { 240 { "nativeDestructor", "(J)V", (void*)Shader_destructor }, 241 { "nativeSetLocalMatrix", "(JJ)V", (void*)Shader_setLocalMatrix } 242}; 243 244static JNINativeMethod gBitmapShaderMethods[] = { 245 { "nativeCreate", "(JII)J", (void*)BitmapShader_constructor }, 246}; 247 248static JNINativeMethod gLinearGradientMethods[] = { 249 { "nativeCreate1", "(FFFF[I[FI)J", (void*)LinearGradient_create1 }, 250 { "nativeCreate2", "(FFFFIII)J", (void*)LinearGradient_create2 }, 251}; 252 253static JNINativeMethod gRadialGradientMethods[] = { 254 { "nativeCreate1", "(FFF[I[FI)J", (void*)RadialGradient_create1 }, 255 { "nativeCreate2", "(FFFIII)J", (void*)RadialGradient_create2 }, 256}; 257 258static JNINativeMethod gSweepGradientMethods[] = { 259 { "nativeCreate1", "(FF[I[F)J", (void*)SweepGradient_create1 }, 260 { "nativeCreate2", "(FFII)J", (void*)SweepGradient_create2 }, 261}; 262 263static JNINativeMethod gComposeShaderMethods[] = { 264 { "nativeCreate1", "(JJJ)J", (void*)ComposeShader_create1 }, 265 { "nativeCreate2", "(JJI)J", (void*)ComposeShader_create2 }, 266}; 267 268#include <android_runtime/AndroidRuntime.h> 269 270#define REG(env, name, array) \ 271 result = android::AndroidRuntime::registerNativeMethods(env, name, array, SK_ARRAY_COUNT(array)); \ 272 if (result < 0) return result 273 274int register_android_graphics_Shader(JNIEnv* env) 275{ 276 int result; 277 278 REG(env, "android/graphics/Color", gColorMethods); 279 REG(env, "android/graphics/Shader", gShaderMethods); 280 REG(env, "android/graphics/BitmapShader", gBitmapShaderMethods); 281 REG(env, "android/graphics/LinearGradient", gLinearGradientMethods); 282 REG(env, "android/graphics/RadialGradient", gRadialGradientMethods); 283 REG(env, "android/graphics/SweepGradient", gSweepGradientMethods); 284 REG(env, "android/graphics/ComposeShader", gComposeShaderMethods); 285 286 return result; 287} 288