| /* |
| * Copyright (C) 2008 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdio.h> |
| #include <assert.h> |
| #include <sys/socket.h> |
| |
| #include <core/SkCanvas.h> |
| #include <core/SkDevice.h> |
| #include <core/SkPaint.h> |
| #include <utils/SkGLCanvas.h> |
| #include "GraphicsJNI.h" |
| |
| #include "jni.h" |
| #include <nativehelper/JNIHelp.h> |
| #include <android_runtime/AndroidRuntime.h> |
| #include <utils/misc.h> |
| |
| // ---------------------------------------------------------------------------- |
| |
| namespace android { |
| |
| static int gPrevDur; |
| |
| static void android_view_ViewRoot_showFPS(JNIEnv* env, jobject, jobject jcanvas, |
| jint dur) { |
| NPE_CHECK_RETURN_VOID(env, jcanvas); |
| SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas); |
| const SkBitmap& bm = canvas->getDevice()->accessBitmap(false); |
| int height = bm.height(); |
| SkScalar bot = SkIntToScalar(height); |
| |
| if (height < 200) { |
| return; |
| } |
| |
| SkMatrix m; |
| SkRect r; |
| SkPaint p; |
| char str[4]; |
| |
| dur = (gPrevDur + dur) >> 1; |
| gPrevDur = dur; |
| |
| dur = 1000 / dur; |
| str[3] = (char)('0' + dur % 10); dur /= 10; |
| str[2] = (char)('0' + dur % 10); dur /= 10; |
| str[1] = (char)('0' + dur % 10); dur /= 10; |
| str[0] = (char)('0' + dur % 10); |
| |
| m.reset(); |
| r.set(0, bot-SkIntToScalar(10), SkIntToScalar(26), bot); |
| p.setAntiAlias(true); |
| p.setTextSize(SkIntToScalar(10)); |
| |
| canvas->save(); |
| canvas->setMatrix(m); |
| canvas->clipRect(r, SkRegion::kReplace_Op); |
| p.setColor(SK_ColorWHITE); |
| canvas->drawPaint(p); |
| p.setColor(SK_ColorBLACK); |
| canvas->drawText(str, 4, SkIntToScalar(1), bot - SK_Scalar1, p); |
| canvas->restore(); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| const char* const kClassPathName = "android/view/ViewRoot"; |
| |
| static JNINativeMethod gMethods[] = { |
| { "nativeShowFPS", "(Landroid/graphics/Canvas;I)V", |
| (void*)android_view_ViewRoot_showFPS } |
| }; |
| |
| int register_android_view_ViewRoot(JNIEnv* env) { |
| return AndroidRuntime::registerNativeMethods(env, |
| kClassPathName, gMethods, NELEM(gMethods)); |
| } |
| |
| }; |
| |