diff options
Diffstat (limited to 'src/com/android/gallery3d/app/ActivityState.java')
-rw-r--r-- | src/com/android/gallery3d/app/ActivityState.java | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/src/com/android/gallery3d/app/ActivityState.java b/src/com/android/gallery3d/app/ActivityState.java new file mode 100644 index 000000000..2f1e0c9d9 --- /dev/null +++ b/src/com/android/gallery3d/app/ActivityState.java @@ -0,0 +1,276 @@ +/* + * Copyright (C) 2010 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. + */ + +package com.android.gallery3d.app; + +import android.app.ActionBar; +import android.app.Activity; +import android.content.BroadcastReceiver; +import android.content.Context; +import android.content.Intent; +import android.content.IntentFilter; +import android.content.res.Configuration; +import android.os.BatteryManager; +import android.os.Bundle; +import android.view.HapticFeedbackConstants; +import android.view.Menu; +import android.view.MenuInflater; +import android.view.MenuItem; +import android.view.Window; +import android.view.WindowManager; + +import com.android.gallery3d.R; +import com.android.gallery3d.anim.StateTransitionAnimation; +import com.android.gallery3d.glrenderer.RawTexture; +import com.android.gallery3d.ui.GLView; +import com.android.gallery3d.ui.PreparePageFadeoutTexture; +import com.android.gallery3d.util.GalleryUtils; + +abstract public class ActivityState { + protected static final int FLAG_HIDE_ACTION_BAR = 1; + protected static final int FLAG_HIDE_STATUS_BAR = 2; + protected static final int FLAG_SCREEN_ON_WHEN_PLUGGED = 4; + protected static final int FLAG_SCREEN_ON_ALWAYS = 8; + protected static final int FLAG_ALLOW_LOCK_WHILE_SCREEN_ON = 16; + protected static final int FLAG_SHOW_WHEN_LOCKED = 32; + + protected AbstractGalleryActivity mActivity; + protected Bundle mData; + protected int mFlags; + + protected ResultEntry mReceivedResults; + protected ResultEntry mResult; + + protected static class ResultEntry { + public int requestCode; + public int resultCode = Activity.RESULT_CANCELED; + public Intent resultData; + } + + private boolean mDestroyed = false; + private boolean mPlugged = false; + boolean mIsFinishing = false; + + private static final String KEY_TRANSITION_IN = "transition-in"; + + private StateTransitionAnimation.Transition mNextTransition = + StateTransitionAnimation.Transition.None; + private StateTransitionAnimation mIntroAnimation; + private GLView mContentPane; + + protected ActivityState() { + } + + protected void setContentPane(GLView content) { + mContentPane = content; + if (mIntroAnimation != null) { + mContentPane.setIntroAnimation(mIntroAnimation); + mIntroAnimation = null; + } + mContentPane.setBackgroundColor(getBackgroundColor()); + mActivity.getGLRoot().setContentPane(mContentPane); + } + + void initialize(AbstractGalleryActivity activity, Bundle data) { + mActivity = activity; + mData = data; + } + + public Bundle getData() { + return mData; + } + + protected void onBackPressed() { + mActivity.getStateManager().finishState(this); + } + + protected void setStateResult(int resultCode, Intent data) { + if (mResult == null) return; + mResult.resultCode = resultCode; + mResult.resultData = data; + } + + protected void onConfigurationChanged(Configuration config) { + } + + protected void onSaveState(Bundle outState) { + } + + protected void onStateResult(int requestCode, int resultCode, Intent data) { + } + + protected float[] mBackgroundColor; + + protected int getBackgroundColorId() { + return R.color.default_background; + } + + protected float[] getBackgroundColor() { + return mBackgroundColor; + } + + protected void onCreate(Bundle data, Bundle storedState) { + mBackgroundColor = GalleryUtils.intColorToFloatARGBArray( + mActivity.getResources().getColor(getBackgroundColorId())); + } + + protected void clearStateResult() { + } + + BroadcastReceiver mPowerIntentReceiver = new BroadcastReceiver() { + @Override + public void onReceive(Context context, Intent intent) { + final String action = intent.getAction(); + if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { + boolean plugged = (0 != intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0)); + + if (plugged != mPlugged) { + mPlugged = plugged; + setScreenFlags(); + } + } + } + }; + + private void setScreenFlags() { + final Window win = mActivity.getWindow(); + final WindowManager.LayoutParams params = win.getAttributes(); + if ((0 != (mFlags & FLAG_SCREEN_ON_ALWAYS)) || + (mPlugged && 0 != (mFlags & FLAG_SCREEN_ON_WHEN_PLUGGED))) { + params.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; + } else { + params.flags &= ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON; + } + if (0 != (mFlags & FLAG_ALLOW_LOCK_WHILE_SCREEN_ON)) { + params.flags |= WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON; + } else { + params.flags &= ~WindowManager.LayoutParams.FLAG_ALLOW_LOCK_WHILE_SCREEN_ON; + } + if (0 != (mFlags & FLAG_SHOW_WHEN_LOCKED)) { + params.flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; + } else { + params.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; + } + win.setAttributes(params); + } + + protected void transitionOnNextPause(Class<? extends ActivityState> outgoing, + Class<? extends ActivityState> incoming, StateTransitionAnimation.Transition hint) { + if (outgoing == SinglePhotoPage.class && incoming == AlbumPage.class) { + mNextTransition = StateTransitionAnimation.Transition.Outgoing; + } else if (outgoing == AlbumPage.class && incoming == SinglePhotoPage.class) { + mNextTransition = StateTransitionAnimation.Transition.PhotoIncoming; + } else { + mNextTransition = hint; + } + } + + protected void performHapticFeedback(int feedbackConstant) { + mActivity.getWindow().getDecorView().performHapticFeedback(feedbackConstant, + HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING); + } + + protected void onPause() { + if (0 != (mFlags & FLAG_SCREEN_ON_WHEN_PLUGGED)) { + ((Activity) mActivity).unregisterReceiver(mPowerIntentReceiver); + } + if (mNextTransition != StateTransitionAnimation.Transition.None) { + mActivity.getTransitionStore().put(KEY_TRANSITION_IN, mNextTransition); + PreparePageFadeoutTexture.prepareFadeOutTexture(mActivity, mContentPane); + mNextTransition = StateTransitionAnimation.Transition.None; + } + } + + // should only be called by StateManager + void resume() { + AbstractGalleryActivity activity = mActivity; + ActionBar actionBar = activity.getActionBar(); + if (actionBar != null) { + if ((mFlags & FLAG_HIDE_ACTION_BAR) != 0) { + actionBar.hide(); + } else { + actionBar.show(); + } + int stateCount = mActivity.getStateManager().getStateCount(); + mActivity.getGalleryActionBar().setDisplayOptions(stateCount > 1, true); + // Default behavior, this can be overridden in ActivityState's onResume. + actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD); + } + + activity.invalidateOptionsMenu(); + + setScreenFlags(); + + boolean lightsOut = ((mFlags & FLAG_HIDE_STATUS_BAR) != 0); + mActivity.getGLRoot().setLightsOutMode(lightsOut); + + ResultEntry entry = mReceivedResults; + if (entry != null) { + mReceivedResults = null; + onStateResult(entry.requestCode, entry.resultCode, entry.resultData); + } + + if (0 != (mFlags & FLAG_SCREEN_ON_WHEN_PLUGGED)) { + // we need to know whether the device is plugged in to do this correctly + final IntentFilter filter = new IntentFilter(); + filter.addAction(Intent.ACTION_BATTERY_CHANGED); + activity.registerReceiver(mPowerIntentReceiver, filter); + } + + onResume(); + + // the transition store should be cleared after resume; + mActivity.getTransitionStore().clear(); + } + + // a subclass of ActivityState should override the method to resume itself + protected void onResume() { + RawTexture fade = mActivity.getTransitionStore().get( + PreparePageFadeoutTexture.KEY_FADE_TEXTURE); + mNextTransition = mActivity.getTransitionStore().get( + KEY_TRANSITION_IN, StateTransitionAnimation.Transition.None); + if (mNextTransition != StateTransitionAnimation.Transition.None) { + mIntroAnimation = new StateTransitionAnimation(mNextTransition, fade); + mNextTransition = StateTransitionAnimation.Transition.None; + } + } + + protected boolean onCreateActionBar(Menu menu) { + // TODO: we should return false if there is no menu to show + // this is a workaround for a bug in system + return true; + } + + protected boolean onItemSelected(MenuItem item) { + return false; + } + + protected void onDestroy() { + mDestroyed = true; + } + + boolean isDestroyed() { + return mDestroyed; + } + + public boolean isFinishing() { + return mIsFinishing; + } + + protected MenuInflater getSupportMenuInflater() { + return mActivity.getMenuInflater(); + } +} |