diff options
Diffstat (limited to 'photoviewer/src/com/android/ex/photo/fragments/PhotoViewFragment.java')
| -rw-r--r-- | photoviewer/src/com/android/ex/photo/fragments/PhotoViewFragment.java | 447 |
1 files changed, 0 insertions, 447 deletions
diff --git a/photoviewer/src/com/android/ex/photo/fragments/PhotoViewFragment.java b/photoviewer/src/com/android/ex/photo/fragments/PhotoViewFragment.java deleted file mode 100644 index e62383a..0000000 --- a/photoviewer/src/com/android/ex/photo/fragments/PhotoViewFragment.java +++ /dev/null @@ -1,447 +0,0 @@ -/* - * Copyright (C) 2011 Google Inc. - * Licensed to 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.ex.photo.fragments; - -import android.app.Activity; -import android.app.Fragment; -import android.app.LoaderManager; -import android.app.LoaderManager.LoaderCallbacks; -import android.content.Context; -import android.content.Intent; -import android.content.Loader; -import android.database.Cursor; -import android.graphics.Bitmap; -import android.os.Bundle; -import android.util.DisplayMetrics; -import android.view.LayoutInflater; -import android.view.View; -import android.view.View.OnClickListener; -import android.view.ViewGroup; -import android.view.WindowManager; -import android.widget.ImageView; -import android.widget.ProgressBar; -import android.widget.TextView; - -import com.android.ex.photo.Intents; -import com.android.ex.photo.PhotoViewActivity; -import com.android.ex.photo.PhotoViewActivity.CursorChangedListener; -import com.android.ex.photo.PhotoViewActivity.OnScreenListener; -import com.android.ex.photo.R; -import com.android.ex.photo.adapters.PhotoPagerAdapter; -import com.android.ex.photo.loaders.PhotoBitmapLoader; -import com.android.ex.photo.util.ImageUtils; -import com.android.ex.photo.views.PhotoView; -import com.android.ex.photo.views.ProgressBarWrapper; - -/** - * Displays a photo. - */ -public class PhotoViewFragment extends Fragment implements - LoaderCallbacks<Bitmap>, OnClickListener, OnScreenListener, CursorChangedListener { - /** - * Interface for components that are internally scrollable left-to-right. - */ - public static interface HorizontallyScrollable { - /** - * Return {@code true} if the component needs to receive right-to-left - * touch movements. - * - * @param origX the raw x coordinate of the initial touch - * @param origY the raw y coordinate of the initial touch - */ - - public boolean interceptMoveLeft(float origX, float origY); - - /** - * Return {@code true} if the component needs to receive left-to-right - * touch movements. - * - * @param origX the raw x coordinate of the initial touch - * @param origY the raw y coordinate of the initial touch - */ - public boolean interceptMoveRight(float origX, float origY); - } - - private final static String STATE_INTENT_KEY = - "com.android.mail.photo.fragments.PhotoViewFragment.INTENT"; - - // Loader IDs - private final static int LOADER_ID_PHOTO = 1; - private final static int LOADER_ID_THUMBNAIL = 2; - - /** The size of the photo */ - public static Integer sPhotoSize; - - /** The URL of a photo to display */ - private String mResolvedPhotoUri; - private String mThumbnailUri; - /** The intent we were launched with */ - private Intent mIntent; - private PhotoViewActivity mCallback; - private PhotoPagerAdapter mAdapter; - - private PhotoView mPhotoView; - private ImageView mPhotoPreviewImage; - private TextView mEmptyText; - private ImageView mRetryButton; - private ProgressBarWrapper mPhotoProgressBar; - - private final int mPosition; - - /** Whether or not the fragment should make the photo full-screen */ - private boolean mFullScreen; - - /** Whether or not this fragment will only show the loading spinner */ - private final boolean mOnlyShowSpinner; - - /** Whether or not the progress bar is showing valid information about the progress stated */ - private boolean mProgressBarNeeded = true; - - private View mPhotoPreviewAndProgress; - - public PhotoViewFragment() { - mPosition = -1; - mOnlyShowSpinner = false; - mProgressBarNeeded = true; - } - - public PhotoViewFragment(Intent intent, int position, PhotoPagerAdapter adapter, - boolean onlyShowSpinner) { - mIntent = intent; - mPosition = position; - mAdapter = adapter; - mOnlyShowSpinner = onlyShowSpinner; - mProgressBarNeeded = true; - } - - @Override - public void onAttach(Activity activity) { - super.onAttach(activity); - mCallback = (PhotoViewActivity) activity; - if (mCallback == null) { - throw new IllegalArgumentException( - "Activity must be a derived class of PhotoViewActivity"); - } - - if (sPhotoSize == null) { - final DisplayMetrics metrics = new DisplayMetrics(); - final WindowManager wm = - (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE); - final ImageUtils.ImageSize imageSize = ImageUtils.sUseImageSize; - wm.getDefaultDisplay().getMetrics(metrics); - switch (imageSize) { - case EXTRA_SMALL: { - // Use a photo that's 80% of the "small" size - sPhotoSize = (Math.min(metrics.heightPixels, metrics.widthPixels) * 800) / 1000; - break; - } - - case SMALL: - case NORMAL: - default: { - sPhotoSize = Math.min(metrics.heightPixels, metrics.widthPixels); - break; - } - } - } - } - - @Override - public void onDetach() { - mCallback = null; - super.onDetach(); - } - - @Override - public void onCreate(Bundle savedInstanceState) { - super.onCreate(savedInstanceState); - - if (savedInstanceState != null) { - final Bundle state = savedInstanceState.getBundle(STATE_INTENT_KEY); - if (state != null) { - mIntent = new Intent().putExtras(state); - } - } - - if (mIntent != null) { - mResolvedPhotoUri = mIntent.getStringExtra(Intents.EXTRA_RESOLVED_PHOTO_URI); - mThumbnailUri = mIntent.getStringExtra(Intents.EXTRA_THUMBNAIL_URI); - } - } - - @Override - public View onCreateView(LayoutInflater inflater, ViewGroup container, - Bundle savedInstanceState) { - final View view = inflater.inflate(R.layout.photo_fragment_view, container, false); - - mPhotoView = (PhotoView) view.findViewById(R.id.photo_view); - mPhotoView.setMaxInitialScale(mIntent.getFloatExtra(Intents.EXTRA_MAX_INITIAL_SCALE, 1)); - mPhotoView.setOnClickListener(this); - mPhotoView.setFullScreen(mFullScreen, false); - mPhotoView.enableImageTransforms(true); - - mPhotoPreviewAndProgress = view.findViewById(R.id.photo_preview); - mPhotoPreviewImage = (ImageView) view.findViewById(R.id.photo_preview_image); - final ProgressBar indeterminate = - (ProgressBar) view.findViewById(R.id.indeterminate_progress); - final ProgressBar determinate = - (ProgressBar) view.findViewById(R.id.determinate_progress); - mPhotoProgressBar = new ProgressBarWrapper(determinate, indeterminate, true); - mEmptyText = (TextView) view.findViewById(R.id.empty_text); - mRetryButton = (ImageView) view.findViewById(R.id.retry_button); - - // Don't call until we've setup the entire view - setViewVisibility(); - - return view; - } - - @Override - public void onResume() { - mCallback.addScreenListener(this); - mCallback.addCursorListener(this); - - getLoaderManager().initLoader(LOADER_ID_THUMBNAIL, null, this); - - super.onResume(); - } - - @Override - public void onPause() { - super.onPause(); - // Remove listeners - mCallback.removeCursorListener(this); - mCallback.removeScreenListener(this); - resetPhotoView(); - } - - @Override - public void onDestroyView() { - // Clean up views and other components - if (mPhotoView != null) { - mPhotoView.clear(); - mPhotoView = null; - } - - super.onDestroyView(); - } - - @Override - public void onSaveInstanceState(Bundle outState) { - super.onSaveInstanceState(outState); - - if (mIntent != null) { - outState.putParcelable(STATE_INTENT_KEY, mIntent.getExtras()); - } - } - - @Override - public Loader<Bitmap> onCreateLoader(int id, Bundle args) { - if(mOnlyShowSpinner) { - return null; - } - switch (id) { - case LOADER_ID_PHOTO: - return new PhotoBitmapLoader(getActivity(), mResolvedPhotoUri); - case LOADER_ID_THUMBNAIL: - return new PhotoBitmapLoader(getActivity(), mThumbnailUri); - default: - return null; - } - } - - @Override - public void onLoadFinished(Loader<Bitmap> loader, Bitmap data) { - // If we don't have a view, the fragment has been paused. We'll get the cursor again later. - if (getView() == null) { - return; - } - - final int id = loader.getId(); - switch (id) { - case LOADER_ID_PHOTO: - if (data != null) { - bindPhoto(data); - mPhotoPreviewAndProgress.setVisibility(View.GONE); - mProgressBarNeeded = false; - } else { - // Received a null result for the full size image. Instead attempt to load the - // thumbnail - getLoaderManager().initLoader(LOADER_ID_THUMBNAIL, null, this); - } - break; - case LOADER_ID_THUMBNAIL: - mProgressBarNeeded = false; - if (isPhotoBound()) { - // There is need to do anything with the thumbnail image, as the full size - // image is being shown. - mPhotoPreviewAndProgress.setVisibility(View.GONE); - return; - } else if (data == null) { - // no preview, show default - mPhotoPreviewImage.setVisibility(View.VISIBLE); - mPhotoPreviewImage.setImageResource(R.drawable.default_image); - } else { - bindPhoto(data); - getLoaderManager().initLoader(LOADER_ID_PHOTO, null, this); - } - break; - default: - break; - } - - if (mProgressBarNeeded == false) { - // Hide the progress bar as it isn't needed anymore. - mPhotoProgressBar.setVisibility(View.GONE); - } - if (data != null) { - mCallback.onNewPhotoLoaded(); - } - - setViewVisibility(); - } - - /** - * Binds an image to the photo view. - */ - private void bindPhoto(Bitmap bitmap) { - if (mPhotoView != null) { - mPhotoView.bindPhoto(bitmap); - } - } - - /** - * Resets the photo view to it's default state w/ no bound photo. - */ - private void resetPhotoView() { - if (mPhotoView != null) { - mPhotoView.bindPhoto(null); - } - } - - @Override - public void onLoaderReset(Loader<Bitmap> loader) { - // Do nothing - } - - @Override - public void onClick(View v) { - mCallback.toggleFullScreen(); - } - - @Override - public void onFullScreenChanged(boolean fullScreen) { - setViewVisibility(); - } - - @Override - public void onViewActivated() { - if (!mCallback.isFragmentActive(this)) { - // we're not in the foreground; reset our view - resetViews(); - } else { - mCallback.onFragmentVisible(this); - } - } - - /** - * Reset the views to their default states - */ - public void resetViews() { - if (mPhotoView != null) { - mPhotoView.resetTransformations(); - } - } - - @Override - public boolean onInterceptMoveLeft(float origX, float origY) { - if (!mCallback.isFragmentActive(this)) { - // we're not in the foreground; don't intercept any touches - return false; - } - - return (mPhotoView != null && mPhotoView.interceptMoveLeft(origX, origY)); - } - - @Override - public boolean onInterceptMoveRight(float origX, float origY) { - if (!mCallback.isFragmentActive(this)) { - // we're not in the foreground; don't intercept any touches - return false; - } - - return (mPhotoView != null && mPhotoView.interceptMoveRight(origX, origY)); - } - - /** - * Returns {@code true} if a photo has been bound. Otherwise, returns {@code false}. - */ - public boolean isPhotoBound() { - return (mPhotoView != null && mPhotoView.isPhotoBound()); - } - - /** - * Sets view visibility depending upon whether or not we're in "full screen" mode. - */ - private void setViewVisibility() { - final boolean fullScreen = mCallback.isFragmentFullScreen(this); - final boolean hide = fullScreen; - - setFullScreen(hide); - } - - /** - * Sets full-screen mode for the views. - */ - public void setFullScreen(boolean fullScreen) { - mFullScreen = fullScreen; - } - - @Override - public void onCursorChanged(Cursor cursor) { - if (cursor.moveToPosition(mPosition) && !isPhotoBound()) { - final LoaderManager manager = getLoaderManager(); - final Loader<Bitmap> fakeLoader = manager.getLoader(LOADER_ID_PHOTO); - if (fakeLoader == null) { - return; - } - - final PhotoBitmapLoader loader = - (PhotoBitmapLoader) fakeLoader; - mResolvedPhotoUri = mAdapter.getPhotoUri(cursor); - loader.setPhotoUri(mResolvedPhotoUri); - loader.forceLoad(); - } - } - - public ProgressBarWrapper getPhotoProgressBar() { - return mPhotoProgressBar; - } - - public TextView getEmptyText() { - return mEmptyText; - } - - public ImageView getRetryButton() { - return mRetryButton; - } - - public boolean isProgressBarNeeded() { - return mProgressBarNeeded; - } -} |