android_view_GLES20Canvas.cpp revision 079ba2c85b15e882629b8d188f5fbdb42f7f8eea
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include "jni.h" 18#include <nativehelper/JNIHelp.h> 19#include <android_runtime/AndroidRuntime.h> 20#include <utils/ResourceTypes.h> 21 22#include <SkBitmap.h> 23#include <SkCanvas.h> 24#include <SkMatrix.h> 25#include <SkPaint.h> 26#include <SkRegion.h> 27#include <SkXfermode.h> 28 29#include <OpenGLRenderer.h> 30#include <Rect.h> 31#include <ui/Rect.h> 32 33namespace android { 34 35using namespace uirenderer; 36 37// ---------------------------------------------------------------------------- 38// Java APIs 39// ---------------------------------------------------------------------------- 40 41static struct { 42 jclass clazz; 43 jmethodID set; 44} gRectClassInfo; 45 46// ---------------------------------------------------------------------------- 47// Constructors 48// ---------------------------------------------------------------------------- 49 50static OpenGLRenderer* android_view_GLES20Canvas_createRenderer(JNIEnv* env, jobject canvas) { 51 return new OpenGLRenderer; 52} 53 54static void android_view_GLES20Canvas_destroyRenderer(JNIEnv* env, jobject canvas, 55 OpenGLRenderer* renderer) { 56 delete renderer; 57} 58 59// ---------------------------------------------------------------------------- 60// Setup 61// ---------------------------------------------------------------------------- 62 63static void android_view_GLES20Canvas_setViewport(JNIEnv* env, jobject canvas, 64 OpenGLRenderer* renderer, jint width, jint height) { 65 renderer->setViewport(width, height); 66} 67 68static void android_view_GLES20Canvas_prepare(JNIEnv* env, jobject canvas, 69 OpenGLRenderer* renderer) { 70 renderer->prepare(); 71} 72 73// ---------------------------------------------------------------------------- 74// State 75// ---------------------------------------------------------------------------- 76 77static jint android_view_GLES20Canvas_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer, 78 jint flags) { 79 return renderer->save(flags); 80} 81 82static jint android_view_GLES20Canvas_getSaveCount(JNIEnv* env, jobject canvas, 83 OpenGLRenderer* renderer) { 84 return renderer->getSaveCount(); 85} 86 87static void android_view_GLES20Canvas_restore(JNIEnv* env, jobject canvas, 88 OpenGLRenderer* renderer) { 89 renderer->restore(); 90} 91 92static void android_view_GLES20Canvas_restoreToCount(JNIEnv* env, jobject canvas, 93 OpenGLRenderer* renderer, jint saveCount) { 94 renderer->restoreToCount(saveCount); 95} 96 97// ---------------------------------------------------------------------------- 98// Layers 99// ---------------------------------------------------------------------------- 100 101static jint android_view_GLES20Canvas_saveLayer(JNIEnv* env, jobject canvas, 102 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 103 SkPaint* paint, jint saveFlags) { 104 return renderer->saveLayer(left, top, right, bottom, paint, saveFlags); 105} 106 107static jint android_view_GLES20Canvas_saveLayerAlpha(JNIEnv* env, jobject canvas, 108 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 109 jint alpha, jint saveFlags) { 110 return renderer->saveLayerAlpha(left, top, right, bottom, alpha, saveFlags); 111} 112 113// ---------------------------------------------------------------------------- 114// Clipping 115// ---------------------------------------------------------------------------- 116 117static bool android_view_GLES20Canvas_quickReject(JNIEnv* env, jobject canvas, 118 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 119 SkCanvas::EdgeType edge) { 120 return renderer->quickReject(left, top, right, bottom); 121} 122 123static bool android_view_GLES20Canvas_clipRectF(JNIEnv* env, jobject canvas, 124 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 125 SkRegion::Op op) { 126 return renderer->clipRect(left, top, right, bottom, op); 127} 128 129static bool android_view_GLES20Canvas_clipRect(JNIEnv* env, jobject canvas, 130 OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom, 131 SkRegion::Op op) { 132 return renderer->clipRect(float(left), float(top), float(right), float(bottom), op); 133} 134 135static bool android_view_GLES20Canvas_getClipBounds(JNIEnv* env, jobject canvas, 136 OpenGLRenderer* renderer, jobject rect) { 137 const android::uirenderer::Rect& bounds(renderer->getClipBounds()); 138 139 env->CallVoidMethod(rect, gRectClassInfo.set, 140 int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom)); 141 142 return !bounds.isEmpty(); 143} 144 145// ---------------------------------------------------------------------------- 146// Transforms 147// ---------------------------------------------------------------------------- 148 149static void android_view_GLES20Canvas_translate(JNIEnv* env, jobject canvas, 150 OpenGLRenderer* renderer, jfloat dx, jfloat dy) { 151 renderer->translate(dx, dy); 152} 153 154static void android_view_GLES20Canvas_rotate(JNIEnv* env, jobject canvas, 155 OpenGLRenderer* renderer, jfloat degrees) { 156 renderer->rotate(degrees); 157} 158 159static void android_view_GLES20Canvas_scale(JNIEnv* env, jobject canvas, 160 OpenGLRenderer* renderer, jfloat sx, jfloat sy) { 161 renderer->scale(sx, sy); 162} 163 164static void android_view_GLES20Canvas_setMatrix(JNIEnv* env, jobject canvas, 165 OpenGLRenderer* renderer, SkMatrix* matrix) { 166 renderer->setMatrix(matrix); 167} 168 169static void android_view_GLES20Canvas_getMatrix(JNIEnv* env, jobject canvas, 170 OpenGLRenderer* renderer, SkMatrix* matrix) { 171 renderer->getMatrix(matrix); 172} 173 174static void android_view_GLES20Canvas_concatMatrix(JNIEnv* env, jobject canvas, 175 OpenGLRenderer* renderer, SkMatrix* matrix) { 176 renderer->concatMatrix(matrix); 177} 178 179// ---------------------------------------------------------------------------- 180// Drawing 181// ---------------------------------------------------------------------------- 182 183static void android_view_GLES20Canvas_drawBitmap(JNIEnv* env, jobject canvas, 184 OpenGLRenderer* renderer, SkBitmap* bitmap, float left, float top, SkPaint* paint) { 185 renderer->drawBitmap(bitmap, left, top, paint); 186} 187 188static void android_view_GLES20Canvas_drawBitmapRect(JNIEnv* env, jobject canvas, 189 OpenGLRenderer* renderer, SkBitmap* bitmap, 190 float srcLeft, float srcTop, float srcRight, float srcBottom, 191 float dstLeft, float dstTop, float dstRight, float dstBottom, SkPaint* paint) { 192 renderer->drawBitmap(bitmap, srcLeft, srcTop, srcRight, srcBottom, 193 dstLeft, dstTop, dstRight, dstBottom, paint); 194} 195 196static void android_view_GLES20Canvas_drawBitmapMatrix(JNIEnv* env, jobject canvas, 197 OpenGLRenderer* renderer, SkBitmap* bitmap, SkMatrix* matrix, SkPaint* paint) { 198 renderer->drawBitmap(bitmap, matrix, paint); 199} 200 201static void android_view_GLES20Canvas_drawPatch(JNIEnv* env, jobject canvas, 202 OpenGLRenderer* renderer, SkBitmap* bitmap, jbyteArray chunks, 203 float left, float top, float right, float bottom, SkPaint* paint) { 204 205 jbyte* storage = env->GetByteArrayElements(chunks, NULL); 206 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage); 207 Res_png_9patch::deserialize(patch); 208 209 renderer->drawPatch(bitmap, patch, left, top, right, bottom, paint); 210 211 // TODO: make sure that 0 is correct for the flags 212 env->ReleaseByteArrayElements(chunks, storage, 0); 213} 214 215static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas, 216 OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) { 217 renderer->drawColor(color, mode); 218} 219 220static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas, 221 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 222 SkPaint* paint) { 223 renderer->drawRect(left, top, right, bottom, paint); 224} 225 226// ---------------------------------------------------------------------------- 227// Shaders 228// ---------------------------------------------------------------------------- 229 230static void android_view_GLES20Canvas_resetShader(JNIEnv* env, jobject canvas, 231 OpenGLRenderer* renderer) { 232 renderer->resetShader(); 233} 234 235static void android_view_GLES20Canvas_setupBitmapShader(JNIEnv* env, jobject canvas, 236 OpenGLRenderer* renderer, SkShader* shader, SkBitmap* bitmap, 237 SkShader::TileMode tileX, SkShader::TileMode tileY, SkMatrix* matrix) { 238 renderer->setupBitmapShader(bitmap, tileX, tileY, matrix, 239 (shader->getFlags() & SkShader::kOpaqueAlpha_Flag) == 0); 240} 241 242// ---------------------------------------------------------------------------- 243// JNI Glue 244// ---------------------------------------------------------------------------- 245 246const char* const kClassPathName = "android/view/GLES20Canvas"; 247 248static JNINativeMethod gMethods[] = { 249 { "nCreateRenderer", "()I", (void*) android_view_GLES20Canvas_createRenderer }, 250 { "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Canvas_destroyRenderer }, 251 { "nSetViewport", "(III)V", (void*) android_view_GLES20Canvas_setViewport }, 252 { "nPrepare", "(I)V", (void*) android_view_GLES20Canvas_prepare }, 253 254 { "nSave", "(II)I", (void*) android_view_GLES20Canvas_save }, 255 { "nRestore", "(I)V", (void*) android_view_GLES20Canvas_restore }, 256 { "nRestoreToCount", "(II)V", (void*) android_view_GLES20Canvas_restoreToCount }, 257 { "nGetSaveCount", "(I)I", (void*) android_view_GLES20Canvas_getSaveCount }, 258 259 { "nSaveLayer", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayer }, 260 { "nSaveLayerAlpha", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayerAlpha }, 261 262 { "nQuickReject", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_quickReject }, 263 { "nClipRect", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_clipRectF }, 264 { "nClipRect", "(IIIIII)Z", (void*) android_view_GLES20Canvas_clipRect }, 265 266 { "nTranslate", "(IFF)V", (void*) android_view_GLES20Canvas_translate }, 267 { "nRotate", "(IF)V", (void*) android_view_GLES20Canvas_rotate }, 268 { "nScale", "(IFF)V", (void*) android_view_GLES20Canvas_scale }, 269 270 { "nSetMatrix", "(II)V", (void*) android_view_GLES20Canvas_setMatrix }, 271 { "nGetMatrix", "(II)V", (void*) android_view_GLES20Canvas_getMatrix }, 272 { "nConcatMatrix", "(II)V", (void*) android_view_GLES20Canvas_concatMatrix }, 273 274 { "nDrawBitmap", "(IIFFI)V", (void*) android_view_GLES20Canvas_drawBitmap }, 275 { "nDrawBitmap", "(IIFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect }, 276 { "nDrawBitmap", "(IIII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix }, 277 { "nDrawPatch", "(II[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch }, 278 { "nDrawColor", "(III)V", (void*) android_view_GLES20Canvas_drawColor }, 279 { "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Canvas_drawRect }, 280 281 { "nResetShader", "(I)V", (void*) android_view_GLES20Canvas_resetShader }, 282 { "nSetupBitmapShader", "(IIIIII)V", (void*) android_view_GLES20Canvas_setupBitmapShader }, 283 284 { "nGetClipBounds", "(ILandroid/graphics/Rect;)Z", 285 (void*) android_view_GLES20Canvas_getClipBounds }, 286}; 287 288#define FIND_CLASS(var, className) \ 289 var = env->FindClass(className); \ 290 LOG_FATAL_IF(! var, "Unable to find class " className); \ 291 var = jclass(env->NewGlobalRef(var)); 292 293#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 294 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 295 LOG_FATAL_IF(! var, "Unable to find method " methodName); 296 297int register_android_view_GLES20Canvas(JNIEnv* env) { 298 FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect"); 299 GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V"); 300 301 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 302} 303 304}; 305