android_view_GLES20Canvas.cpp revision c0ac193b9415680f0a69e20a3f5f22d16f8053be
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 jbyte* storage = env->GetByteArrayElements(chunks, NULL); 205 Res_png_9patch* patch = reinterpret_cast<Res_png_9patch*>(storage); 206 Res_png_9patch::deserialize(patch); 207 208 renderer->drawPatch(bitmap, patch, left, top, right, bottom, paint); 209 210 // TODO: make sure that 0 is correct for the flags 211 env->ReleaseByteArrayElements(chunks, storage, 0); 212} 213 214static void android_view_GLES20Canvas_drawColor(JNIEnv* env, jobject canvas, 215 OpenGLRenderer* renderer, jint color, SkXfermode::Mode mode) { 216 renderer->drawColor(color, mode); 217} 218 219static void android_view_GLES20Canvas_drawRect(JNIEnv* env, jobject canvas, 220 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 221 SkPaint* paint) { 222 renderer->drawRect(left, top, right, bottom, paint); 223} 224 225// ---------------------------------------------------------------------------- 226// Shaders 227// ---------------------------------------------------------------------------- 228 229static void android_view_GLES20Canvas_resetShader(JNIEnv* env, jobject canvas, 230 OpenGLRenderer* renderer) { 231 renderer->resetShader(); 232} 233 234static void android_view_GLES20Canvas_setupBitmapShader(JNIEnv* env, jobject canvas, 235 OpenGLRenderer* renderer, SkShader* shader, SkBitmap* bitmap, 236 SkShader::TileMode tileX, SkShader::TileMode tileY, SkMatrix* matrix) { 237 renderer->setupBitmapShader(bitmap, tileX, tileY, matrix, 238 (shader->getFlags() & SkShader::kOpaqueAlpha_Flag) == 0); 239} 240 241static void android_view_GLES20Canvas_setupLinearShader(JNIEnv* env, jobject canvas, 242 OpenGLRenderer* renderer, SkShader* shader, float* bounds, uint32_t* colors, 243 float* positions, int count, SkShader::TileMode tileMode, SkMatrix* matrix) { 244 renderer->setupLinearGradientShader(shader, bounds, colors, positions, count, 245 tileMode, matrix, (shader->getFlags() & SkShader::kOpaqueAlpha_Flag) == 0); 246} 247 248// ---------------------------------------------------------------------------- 249// JNI Glue 250// ---------------------------------------------------------------------------- 251 252const char* const kClassPathName = "android/view/GLES20Canvas"; 253 254static JNINativeMethod gMethods[] = { 255 { "nCreateRenderer", "()I", (void*) android_view_GLES20Canvas_createRenderer }, 256 { "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Canvas_destroyRenderer }, 257 { "nSetViewport", "(III)V", (void*) android_view_GLES20Canvas_setViewport }, 258 { "nPrepare", "(I)V", (void*) android_view_GLES20Canvas_prepare }, 259 260 { "nSave", "(II)I", (void*) android_view_GLES20Canvas_save }, 261 { "nRestore", "(I)V", (void*) android_view_GLES20Canvas_restore }, 262 { "nRestoreToCount", "(II)V", (void*) android_view_GLES20Canvas_restoreToCount }, 263 { "nGetSaveCount", "(I)I", (void*) android_view_GLES20Canvas_getSaveCount }, 264 265 { "nSaveLayer", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayer }, 266 { "nSaveLayerAlpha", "(IFFFFII)I", (void*) android_view_GLES20Canvas_saveLayerAlpha }, 267 268 { "nQuickReject", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_quickReject }, 269 { "nClipRect", "(IFFFFI)Z", (void*) android_view_GLES20Canvas_clipRectF }, 270 { "nClipRect", "(IIIIII)Z", (void*) android_view_GLES20Canvas_clipRect }, 271 272 { "nTranslate", "(IFF)V", (void*) android_view_GLES20Canvas_translate }, 273 { "nRotate", "(IF)V", (void*) android_view_GLES20Canvas_rotate }, 274 { "nScale", "(IFF)V", (void*) android_view_GLES20Canvas_scale }, 275 276 { "nSetMatrix", "(II)V", (void*) android_view_GLES20Canvas_setMatrix }, 277 { "nGetMatrix", "(II)V", (void*) android_view_GLES20Canvas_getMatrix }, 278 { "nConcatMatrix", "(II)V", (void*) android_view_GLES20Canvas_concatMatrix }, 279 280 { "nDrawBitmap", "(IIFFI)V", (void*) android_view_GLES20Canvas_drawBitmap }, 281 { "nDrawBitmap", "(IIFFFFFFFFI)V", (void*) android_view_GLES20Canvas_drawBitmapRect }, 282 { "nDrawBitmap", "(IIII)V", (void*) android_view_GLES20Canvas_drawBitmapMatrix }, 283 { "nDrawPatch", "(II[BFFFFI)V", (void*) android_view_GLES20Canvas_drawPatch }, 284 { "nDrawColor", "(III)V", (void*) android_view_GLES20Canvas_drawColor }, 285 { "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Canvas_drawRect }, 286 287 { "nResetShader", "(I)V", (void*) android_view_GLES20Canvas_resetShader }, 288 { "nSetupBitmapShader", "(IIIIII)V", (void*) android_view_GLES20Canvas_setupBitmapShader }, 289 { "nSetupLinearShader", "(IIIIIIII)V", (void*) android_view_GLES20Canvas_setupLinearShader }, 290 291 { "nGetClipBounds", "(ILandroid/graphics/Rect;)Z", 292 (void*) android_view_GLES20Canvas_getClipBounds }, 293}; 294 295#define FIND_CLASS(var, className) \ 296 var = env->FindClass(className); \ 297 LOG_FATAL_IF(! var, "Unable to find class " className); \ 298 var = jclass(env->NewGlobalRef(var)); 299 300#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 301 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 302 LOG_FATAL_IF(! var, "Unable to find method " methodName); 303 304int register_android_view_GLES20Canvas(JNIEnv* env) { 305 FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect"); 306 GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V"); 307 308 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 309} 310 311}; 312