154 lines
4.9 KiB
C++
154 lines
4.9 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _ANDROID_APP_NATIVEACTIVITY_H
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#define _ANDROID_APP_NATIVEACTIVITY_H
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#include <ui/InputTransport.h>
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#include <utils/Looper.h>
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#include <android/native_activity.h>
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#include "jni.h"
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namespace android {
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extern void android_NativeActivity_finish(
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ANativeActivity* activity);
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extern void android_NativeActivity_setWindowFormat(
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ANativeActivity* activity, int32_t format);
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extern void android_NativeActivity_setWindowFlags(
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ANativeActivity* activity, int32_t values, int32_t mask);
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extern void android_NativeActivity_showSoftInput(
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ANativeActivity* activity, int32_t flags);
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extern void android_NativeActivity_hideSoftInput(
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ANativeActivity* activity, int32_t flags);
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} // namespace android
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/*
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* NDK input queue API.
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*
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* Here is the event flow:
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* 1. Event arrives in input consumer, and is returned by getEvent().
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* 2. Application calls preDispatchEvent():
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* a. Event is assigned a sequence ID and enqueued in mPreDispatchingKeys.
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* b. Main thread picks up event, hands to input method.
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* c. Input method eventually returns sequence # and whether it was handled.
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* d. finishPreDispatch() is called to enqueue the information.
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* e. next getEvent() call will:
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* - finish any pre-dispatch events that the input method handled
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* - return the next pre-dispatched event that the input method didn't handle.
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* f. (A preDispatchEvent() call on this event will now return false).
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* 3. Application calls finishEvent() with whether it was handled.
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* - If handled is true, the event is finished.
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* - If handled is false, the event is put on mUnhandledKeys, and:
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* a. Main thread receives event from consumeUnhandledEvent().
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* b. Java sends event through default key handler.
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* c. event is finished.
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*/
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struct AInputQueue : public android::InputEventFactoryInterface {
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public:
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/* Creates a consumer associated with an input channel. */
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explicit AInputQueue(const android::sp<android::InputChannel>& channel, int workWrite);
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/* Destroys the consumer and releases its input channel. */
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~AInputQueue();
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void attachLooper(ALooper* looper, int ident, ALooper_callbackFunc callback, void* data);
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void detachLooper();
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int32_t hasEvents();
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int32_t getEvent(AInputEvent** outEvent);
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bool preDispatchEvent(AInputEvent* event);
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void finishEvent(AInputEvent* event, bool handled);
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// ----------------------------------------------------------
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inline android::InputConsumer& getConsumer() { return mConsumer; }
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void dispatchEvent(android::KeyEvent* event);
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void finishPreDispatch(int seq, bool handled);
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android::KeyEvent* consumeUnhandledEvent();
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android::KeyEvent* consumePreDispatchingEvent(int* outSeq);
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virtual android::KeyEvent* createKeyEvent();
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virtual android::MotionEvent* createMotionEvent();
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int mWorkWrite;
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private:
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void doUnhandledKey(android::KeyEvent* keyEvent);
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bool preDispatchKey(android::KeyEvent* keyEvent);
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void wakeupDispatch();
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android::InputConsumer mConsumer;
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android::sp<android::Looper> mLooper;
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int mDispatchKeyRead;
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int mDispatchKeyWrite;
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struct in_flight_event {
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android::InputEvent* event;
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int seq;
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bool doFinish;
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};
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struct finish_pre_dispatch {
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int seq;
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bool handled;
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};
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android::Mutex mLock;
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int mSeq;
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// Cache of previously allocated key events.
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android::Vector<android::KeyEvent*> mAvailKeyEvents;
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// Cache of previously allocated motion events.
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android::Vector<android::MotionEvent*> mAvailMotionEvents;
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// All input events that are actively being processed.
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android::Vector<in_flight_event> mInFlightEvents;
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// Key events that the app didn't handle, and are pending for
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// delivery to the activity's default key handling.
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android::Vector<android::KeyEvent*> mUnhandledKeys;
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// Keys that arrived in the Java framework and need to be
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// dispatched to the app.
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android::Vector<android::KeyEvent*> mDispatchingKeys;
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// Key events that are pending to be pre-dispatched to the IME.
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android::Vector<in_flight_event> mPreDispatchingKeys;
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// Event sequence numbers that we have finished pre-dispatching.
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android::Vector<finish_pre_dispatch> mFinishPreDispatches;
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};
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#endif // _ANDROID_APP_NATIVEACTIVITY_H
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