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      1 /*
      2  * Copyright (C) 2011 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 #ifndef _ANDROID_VIEW_POINTER_ICON_H
     18 #define _ANDROID_VIEW_POINTER_ICON_H
     19 
     20 #include "jni.h"
     21 
     22 #include <utils/Errors.h>
     23 #include <SkBitmap.h>
     24 
     25 namespace android {
     26 
     27 /* Pointer icon styles.
     28  * Must match the definition in android.view.PointerIcon.
     29  */
     30 enum {
     31     POINTER_ICON_STYLE_CUSTOM = -1,
     32     POINTER_ICON_STYLE_NULL = 0,
     33     POINTER_ICON_STYLE_ARROW = 1000,
     34     POINTER_ICON_STYLE_SPOT_HOVER = 2000,
     35     POINTER_ICON_STYLE_SPOT_TOUCH = 2001,
     36     POINTER_ICON_STYLE_SPOT_ANCHOR = 2002,
     37 };
     38 
     39 /*
     40  * Describes a pointer icon.
     41  */
     42 struct PointerIcon {
     43     inline PointerIcon() {
     44         reset();
     45     }
     46 
     47     int32_t style;
     48     SkBitmap bitmap;
     49     float hotSpotX;
     50     float hotSpotY;
     51 
     52     inline bool isNullIcon() {
     53         return style == POINTER_ICON_STYLE_NULL;
     54     }
     55 
     56     inline void reset() {
     57         style = POINTER_ICON_STYLE_NULL;
     58         bitmap.reset();
     59         hotSpotX = 0;
     60         hotSpotY = 0;
     61     }
     62 };
     63 
     64 /* Gets a system pointer icon with the specified style. */
     65 extern jobject android_view_PointerIcon_getSystemIcon(JNIEnv* env,
     66         jobject contextObj, int32_t style);
     67 
     68 /* Loads the bitmap associated with a pointer icon.
     69  * If pointerIconObj is NULL, returns OK and a pointer icon with POINTER_ICON_STYLE_NULL. */
     70 extern status_t android_view_PointerIcon_load(JNIEnv* env,
     71         jobject pointerIconObj, jobject contextObj, PointerIcon* outPointerIcon);
     72 
     73 /* Loads the bitmap associated with a pointer icon by style.
     74  * If pointerIconObj is NULL, returns OK and a pointer icon with POINTER_ICON_STYLE_NULL. */
     75 extern status_t android_view_PointerIcon_loadSystemIcon(JNIEnv* env,
     76         jobject contextObj, int32_t style, PointerIcon* outPointerIcon);
     77 
     78 } // namespace android
     79 
     80 #endif // _ANDROID_OS_POINTER_ICON_H
     81