1 #ifndef GraphicsJNI_DEFINED 2 #define GraphicsJNI_DEFINED 3 4 #include "SkPoint.h" 5 #include "SkRect.h" 6 #include "SkBitmap.h" 7 #include "../images/SkBitmapRegionDecoder.h" 8 #include "../images/SkImageDecoder.h" 9 #include <jni.h> 10 11 class SkCanvas; 12 class SkPaint; 13 class SkPicture; 14 15 class GraphicsJNI { 16 public: 17 // returns true if an exception is set (and dumps it out to the Log) 18 static bool hasException(JNIEnv*); 19 20 static void get_jrect(JNIEnv*, jobject jrect, int* L, int* T, int* R, int* B); 21 static void set_jrect(JNIEnv*, jobject jrect, int L, int T, int R, int B); 22 23 static SkIRect* jrect_to_irect(JNIEnv*, jobject jrect, SkIRect*); 24 static void irect_to_jrect(const SkIRect&, JNIEnv*, jobject jrect); 25 26 static SkRect* jrectf_to_rect(JNIEnv*, jobject jrectf, SkRect*); 27 static SkRect* jrect_to_rect(JNIEnv*, jobject jrect, SkRect*); 28 static void rect_to_jrectf(const SkRect&, JNIEnv*, jobject jrectf); 29 30 static void set_jpoint(JNIEnv*, jobject jrect, int x, int y); 31 32 static SkIPoint* jpoint_to_ipoint(JNIEnv*, jobject jpoint, SkIPoint* point); 33 static void ipoint_to_jpoint(const SkIPoint& point, JNIEnv*, jobject jpoint); 34 35 static SkPoint* jpointf_to_point(JNIEnv*, jobject jpointf, SkPoint* point); 36 static void point_to_jpointf(const SkPoint& point, JNIEnv*, jobject jpointf); 37 38 static SkCanvas* getNativeCanvas(JNIEnv*, jobject canvas); 39 static SkPaint* getNativePaint(JNIEnv*, jobject paint); 40 static SkBitmap* getNativeBitmap(JNIEnv*, jobject bitmap); 41 static SkPicture* getNativePicture(JNIEnv*, jobject picture); 42 static SkRegion* getNativeRegion(JNIEnv*, jobject region); 43 44 /** Return the corresponding native config from the java Config enum, 45 or kNo_Config if the java object is null. 46 */ 47 static SkBitmap::Config getNativeBitmapConfig(JNIEnv*, jobject jconfig); 48 49 /** Create a java Bitmap object given the native bitmap (required) and optional 50 storage array (may be null). If storage is specified, then it must already be 51 locked, and its native address set as the bitmap's pixels. If storage is null, 52 then the bitmap must be an owner of its natively allocated pixels (via allocPixels). 53 */ 54 static jobject createBitmap(JNIEnv* env, SkBitmap* bitmap, bool isMutable, 55 jbyteArray ninePatch, int density = -1); 56 57 static jobject createRegion(JNIEnv* env, SkRegion* region); 58 59 static jobject createBitmapRegionDecoder(JNIEnv* env, SkBitmapRegionDecoder* bitmap); 60 61 /** Set a pixelref for the bitmap (needs setConfig to already be called) 62 Returns true on success. If it returns false, then it failed, and the 63 appropriate exception will have been raised. 64 */ 65 static bool setJavaPixelRef(JNIEnv*, SkBitmap*, SkColorTable* ctable, 66 bool reportSizeToVM); 67 68 /** Copy the colors in colors[] to the bitmap, convert to the correct 69 format along the way. 70 */ 71 static bool SetPixels(JNIEnv* env, jintArray colors, int srcOffset, 72 int srcStride, int x, int y, int width, int height, 73 const SkBitmap& dstBitmap); 74 }; 75 76 class JavaPixelAllocator : public SkBitmap::Allocator { 77 public: 78 JavaPixelAllocator(JNIEnv* env, bool reportSizeToVM); 79 // overrides 80 virtual bool allocPixelRef(SkBitmap* bitmap, SkColorTable* ctable); 81 82 private: 83 JavaVM* fVM; 84 bool fReportSizeToVM; 85 }; 86 87 class JavaMemoryUsageReporter : public SkVMMemoryReporter { 88 public: 89 JavaMemoryUsageReporter(JNIEnv* env); 90 virtual ~JavaMemoryUsageReporter(); 91 // overrides 92 virtual bool reportMemory(size_t memorySize); 93 94 private: 95 JavaVM* fVM; 96 size_t fTotalSize; 97 }; 98 99 enum JNIAccess { 100 kRO_JNIAccess, 101 kRW_JNIAccess 102 }; 103 104 class AutoJavaFloatArray { 105 public: 106 AutoJavaFloatArray(JNIEnv* env, jfloatArray array, 107 int minLength = 0, JNIAccess = kRW_JNIAccess); 108 ~AutoJavaFloatArray(); 109 110 float* ptr() const { return fPtr; } 111 int length() const { return fLen; } 112 113 private: 114 JNIEnv* fEnv; 115 jfloatArray fArray; 116 float* fPtr; 117 int fLen; 118 int fReleaseMode; 119 }; 120 121 class AutoJavaIntArray { 122 public: 123 AutoJavaIntArray(JNIEnv* env, jintArray array, int minLength = 0); 124 ~AutoJavaIntArray(); 125 126 jint* ptr() const { return fPtr; } 127 int length() const { return fLen; } 128 129 private: 130 JNIEnv* fEnv; 131 jintArray fArray; 132 jint* fPtr; 133 int fLen; 134 }; 135 136 class AutoJavaShortArray { 137 public: 138 AutoJavaShortArray(JNIEnv* env, jshortArray array, 139 int minLength = 0, JNIAccess = kRW_JNIAccess); 140 ~AutoJavaShortArray(); 141 142 jshort* ptr() const { return fPtr; } 143 int length() const { return fLen; } 144 145 private: 146 JNIEnv* fEnv; 147 jshortArray fArray; 148 jshort* fPtr; 149 int fLen; 150 int fReleaseMode; 151 }; 152 153 class AutoJavaByteArray { 154 public: 155 AutoJavaByteArray(JNIEnv* env, jbyteArray array, int minLength = 0); 156 ~AutoJavaByteArray(); 157 158 jbyte* ptr() const { return fPtr; } 159 int length() const { return fLen; } 160 161 private: 162 JNIEnv* fEnv; 163 jbyteArray fArray; 164 jbyte* fPtr; 165 int fLen; 166 }; 167 168 void doThrow(JNIEnv* env, const char* exc, const char* msg = NULL); 169 void doThrowNPE(JNIEnv* env); 170 void doThrowAIOOBE(JNIEnv* env); // Array Index Out Of Bounds Exception 171 void doThrowIAE(JNIEnv* env, const char* msg = NULL); // Illegal Argument 172 void doThrowRE(JNIEnv* env, const char* msg = NULL); // Runtime 173 void doThrowISE(JNIEnv* env, const char* msg = NULL); // Illegal State 174 void doThrowOOME(JNIEnv* env, const char* msg = NULL); // Out of memory 175 void doThrowIOE(JNIEnv* env, const char* msg = NULL); // IO Exception 176 177 #define NPE_CHECK_RETURN_ZERO(env, object) \ 178 do { if (NULL == (object)) { doThrowNPE(env); return 0; } } while (0) 179 180 #define NPE_CHECK_RETURN_VOID(env, object) \ 181 do { if (NULL == (object)) { doThrowNPE(env); return; } } while (0) 182 183 #endif 184
