android_view_GLES20Canvas.cpp revision 7ae7ac48aa2b53453c9805075171ecd5bcafd7de
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 21#include <SkCanvas.h> 22#include <SkMatrix.h> 23#include <SkPaint.h> 24#include <SkXfermode.h> 25 26#include <OpenGLRenderer.h> 27#include <Rect.h> 28#include <ui/Rect.h> 29 30namespace android { 31 32using namespace uirenderer; 33 34// ---------------------------------------------------------------------------- 35// Java APIs 36// ---------------------------------------------------------------------------- 37 38static struct { 39 jclass clazz; 40 jmethodID set; 41} gRectClassInfo; 42 43// ---------------------------------------------------------------------------- 44// Constructors 45// ---------------------------------------------------------------------------- 46 47static OpenGLRenderer* android_view_GLES20Renderer_createRenderer(JNIEnv* env, jobject canvas) { 48 return new OpenGLRenderer; 49} 50 51static void android_view_GLES20Renderer_destroyRenderer(JNIEnv* env, jobject canvas, 52 OpenGLRenderer* renderer) { 53 delete renderer; 54} 55 56// ---------------------------------------------------------------------------- 57// Setup 58// ---------------------------------------------------------------------------- 59 60static void android_view_GLES20Renderer_setViewport(JNIEnv* env, jobject canvas, 61 OpenGLRenderer* renderer, jint width, jint height) { 62 renderer->setViewport(width, height); 63} 64 65static void android_view_GLES20Renderer_prepare(JNIEnv* env, jobject canvas, 66 OpenGLRenderer* renderer) { 67 renderer->prepare(); 68} 69 70// ---------------------------------------------------------------------------- 71// State 72// ---------------------------------------------------------------------------- 73 74static jint android_view_GLES20Renderer_save(JNIEnv* env, jobject canvas, OpenGLRenderer* renderer, 75 jint flags) { 76 return renderer->save(flags); 77} 78 79static jint android_view_GLES20Renderer_getSaveCount(JNIEnv* env, jobject canvas, 80 OpenGLRenderer* renderer) { 81 return renderer->getSaveCount(); 82} 83 84static void android_view_GLES20Renderer_restore(JNIEnv* env, jobject canvas, 85 OpenGLRenderer* renderer) { 86 renderer->restore(); 87} 88 89static void android_view_GLES20Renderer_restoreToCount(JNIEnv* env, jobject canvas, 90 OpenGLRenderer* renderer, jint saveCount) { 91 renderer->restoreToCount(saveCount); 92} 93 94// ---------------------------------------------------------------------------- 95// Clipping 96// ---------------------------------------------------------------------------- 97 98static bool android_view_GLES20Renderer_quickReject(JNIEnv* env, jobject canvas, 99 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 100 SkCanvas::EdgeType edge) { 101 return renderer->quickReject(left, top, right, bottom); 102} 103 104static bool android_view_GLES20Renderer_clipRectF(JNIEnv* env, jobject canvas, 105 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom) { 106 return renderer->clipRect(left, top, right, bottom); 107} 108 109static bool android_view_GLES20Renderer_clipRect(JNIEnv* env, jobject canvas, 110 OpenGLRenderer* renderer, jint left, jint top, jint right, jint bottom) { 111 return renderer->clipRect(float(left), float(top), float(right), float(bottom)); 112} 113 114static bool android_view_GLES20Renderer_getClipBounds(JNIEnv* env, jobject canvas, 115 OpenGLRenderer* renderer, jobject rect) { 116 117 const android::uirenderer::Rect& bounds(renderer->getClipBounds()); 118 119 env->CallVoidMethod(rect, gRectClassInfo.set, 120 int(bounds.left), int(bounds.top), int(bounds.right), int(bounds.bottom)); 121 122 return !bounds.isEmpty(); 123} 124 125// ---------------------------------------------------------------------------- 126// Transforms 127// ---------------------------------------------------------------------------- 128 129static void android_view_GLES20Renderer_translate(JNIEnv* env, jobject canvas, 130 OpenGLRenderer* renderer, jfloat dx, jfloat dy) { 131 renderer->translate(dx, dy); 132} 133 134static void android_view_GLES20Renderer_rotate(JNIEnv* env, jobject canvas, 135 OpenGLRenderer* renderer, jfloat degrees) { 136 renderer->rotate(degrees); 137} 138 139static void android_view_GLES20Renderer_scale(JNIEnv* env, jobject canvas, 140 OpenGLRenderer* renderer, jfloat sx, jfloat sy) { 141 renderer->scale(sx, sy); 142} 143 144static void android_view_GLES20Renderer_setMatrix(JNIEnv* env, jobject canvas, 145 OpenGLRenderer* renderer, SkMatrix* matrix) { 146 renderer->setMatrix(matrix); 147} 148 149static void android_view_GLES20Renderer_getMatrix(JNIEnv* env, jobject canvas, 150 OpenGLRenderer* renderer, SkMatrix* matrix) { 151 renderer->getMatrix(matrix); 152} 153 154static void android_view_GLES20Renderer_concatMatrix(JNIEnv* env, jobject canvas, 155 OpenGLRenderer* renderer, SkMatrix* matrix) { 156 renderer->concatMatrix(matrix); 157} 158 159// ---------------------------------------------------------------------------- 160// Drawing 161// ---------------------------------------------------------------------------- 162 163static void android_view_GLES20Renderer_drawColor(JNIEnv* env, jobject canvas, 164 OpenGLRenderer* renderer, jint color, jint mode) { 165 renderer->drawColor(color, (SkXfermode::Mode) mode); 166} 167 168static void android_view_GLES20Renderer_drawRect(JNIEnv* env, jobject canvas, 169 OpenGLRenderer* renderer, jfloat left, jfloat top, jfloat right, jfloat bottom, 170 SkPaint* paint) { 171 renderer->drawRect(left, top, right, bottom, paint); 172} 173 174// ---------------------------------------------------------------------------- 175// JNI Glue 176// ---------------------------------------------------------------------------- 177 178const char* const kClassPathName = "android/view/GLES20Canvas"; 179 180static JNINativeMethod gMethods[] = { 181 { "nCreateRenderer", "()I", (void*) android_view_GLES20Renderer_createRenderer }, 182 { "nDestroyRenderer", "(I)V", (void*) android_view_GLES20Renderer_destroyRenderer }, 183 { "nSetViewport", "(III)V", (void*) android_view_GLES20Renderer_setViewport }, 184 { "nPrepare", "(I)V", (void*) android_view_GLES20Renderer_prepare }, 185 186 { "nSave", "(II)I", (void*) android_view_GLES20Renderer_save }, 187 { "nRestore", "(I)V", (void*) android_view_GLES20Renderer_restore }, 188 { "nRestoreToCount", "(II)V", (void*) android_view_GLES20Renderer_restoreToCount }, 189 { "nGetSaveCount", "(I)I", (void*) android_view_GLES20Renderer_getSaveCount }, 190 191 { "nQuickReject", "(IFFFFI)Z", (void*) android_view_GLES20Renderer_quickReject }, 192 { "nClipRect", "(IFFFF)Z", (void*) android_view_GLES20Renderer_clipRectF }, 193 { "nClipRect", "(IIIII)Z", (void*) android_view_GLES20Renderer_clipRect }, 194 195 { "nTranslate", "(IFF)V", (void*) android_view_GLES20Renderer_translate }, 196 { "nRotate", "(IF)V", (void*) android_view_GLES20Renderer_rotate }, 197 { "nScale", "(IFF)V", (void*) android_view_GLES20Renderer_scale }, 198 199 { "nSetMatrix", "(II)V", (void*) android_view_GLES20Renderer_setMatrix }, 200 { "nGetMatrix", "(II)V", (void*) android_view_GLES20Renderer_getMatrix }, 201 { "nConcatMatrix", "(II)V", (void*) android_view_GLES20Renderer_concatMatrix }, 202 203 { "nDrawColor", "(III)V", (void*) android_view_GLES20Renderer_drawColor }, 204 { "nDrawRect", "(IFFFFI)V", (void*) android_view_GLES20Renderer_drawRect }, 205 206 { "nGetClipBounds", "(ILandroid/graphics/Rect;)Z", 207 (void*) android_view_GLES20Renderer_getClipBounds }, 208}; 209 210#define FIND_CLASS(var, className) \ 211 var = env->FindClass(className); \ 212 LOG_FATAL_IF(! var, "Unable to find class " className); \ 213 var = jclass(env->NewGlobalRef(var)); 214 215#define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ 216 var = env->GetMethodID(clazz, methodName, methodDescriptor); \ 217 LOG_FATAL_IF(! var, "Unable to find method " methodName); 218 219int register_android_view_GLES20Canvas(JNIEnv* env) { 220 FIND_CLASS(gRectClassInfo.clazz, "android/graphics/Rect"); 221 GET_METHOD_ID(gRectClassInfo.set, gRectClassInfo.clazz, "set", "(IIII)V"); 222 223 return AndroidRuntime::registerNativeMethods(env, kClassPathName, gMethods, NELEM(gMethods)); 224} 225 226}; 227