1 /*
2 * Copyright (C) 2007 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 #define LOG_TAG "AWT"
18
19 #include "jni.h"
20 #include "JNIHelp.h"
21 #include "GraphicsJNI.h"
22 #include <android_runtime/AndroidRuntime.h>
23
24 #include "SkCanvas.h"
25 #include "SkDevice.h"
26 #include "SkPicture.h"
27 #include "SkTemplates.h"
28
29 namespace android
30 {
31
32 static jclass class_fileDescriptor;
33 static jfieldID field_fileDescriptor_descriptor;
34 static jmethodID method_fileDescriptor_init;
35
36
scrollRect(JNIEnv * env,jobject graphics2D,jobject canvas,jobject rect,int dx,int dy)37 static jboolean scrollRect(JNIEnv* env, jobject graphics2D, jobject canvas, jobject rect, int dx, int dy) {
38 if (canvas == NULL) {
39 jniThrowException(env, "java/lang/NullPointerException", NULL);
40 return false;
41 }
42
43 SkIRect src, *srcPtr = NULL;
44 if (NULL != rect) {
45 GraphicsJNI::jrect_to_irect(env, rect, &src);
46 srcPtr = &src;
47 }
48 SkCanvas* c = GraphicsJNI::getNativeCanvas(env, canvas);
49 const SkBitmap& bitmap = c->getDevice()->accessBitmap(true);
50 return bitmap.scrollRect(srcPtr, dx, dy, NULL);
51 }
52
53 static JNINativeMethod method_table[] = {
54 { "nativeScrollRect",
55 "(Landroid/graphics/Canvas;Landroid/graphics/Rect;II)Z",
56 (void*)scrollRect}
57 };
58
register_com_android_internal_graphics_NativeUtils(JNIEnv * env)59 int register_com_android_internal_graphics_NativeUtils(JNIEnv *env) {
60 return AndroidRuntime::registerNativeMethods(
61 env, "com/android/internal/graphics/NativeUtils",
62 method_table, NELEM(method_table));
63 }
64
65 }
66