| /* |
| * 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.widgetpreview; |
| |
| import android.app.Activity; |
| import android.appwidget.AppWidgetHost; |
| import android.appwidget.AppWidgetHostView; |
| import android.appwidget.AppWidgetManager; |
| import android.appwidget.AppWidgetProviderInfo; |
| import android.content.ActivityNotFoundException; |
| import android.content.Intent; |
| import android.content.res.Configuration; |
| import android.content.res.Resources; |
| import android.graphics.Bitmap; |
| import android.graphics.Bitmap.CompressFormat; |
| import android.graphics.Bitmap.Config; |
| import android.graphics.Canvas; |
| import android.net.Uri; |
| import android.os.Bundle; |
| import android.os.Environment; |
| import android.util.Log; |
| import android.view.View; |
| import android.view.View.OnClickListener; |
| import android.view.ViewGroup; |
| import android.widget.Button; |
| import android.widget.FrameLayout; |
| import android.widget.Toast; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.io.IOException; |
| |
| public class WidgetPreviewActivity extends Activity implements OnClickListener { |
| |
| private static final String LOG_TAG = "WidgetPreviewActivity"; |
| private static final boolean DEBUG = true; |
| private static final int APPWIDGET_HOST_ID = 2048; |
| private static final int REQUEST_WIDGET = 0; |
| private static final int REQUEST_CONFIGURE = 1; |
| |
| private AppWidgetHost mAppWidgetHost = null; |
| private FrameLayout mAppWidgetFrame = null; |
| private AppWidgetHostView mAppWidgetView = null; |
| private int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID; |
| private String mAppWidgetName; |
| private int mPreviewWidth; |
| private int mPreviewHeight; |
| |
| private Button mSnapshotButton = null; |
| private Button mEmailButton = null; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(R.layout.activity_main); |
| mAppWidgetFrame = (FrameLayout)findViewById(R.id.main_frame); |
| mSnapshotButton = (Button)findViewById(R.id.snapshot_button); |
| mSnapshotButton.setOnClickListener(this); |
| mEmailButton = (Button)findViewById(R.id.email_button); |
| mEmailButton.setOnClickListener(this); |
| |
| mAppWidgetHost = new AppWidgetHost(getApplicationContext(), APPWIDGET_HOST_ID); |
| |
| final Object retainedObj = getLastNonConfigurationInstance(); |
| if (retainedObj instanceof AppWidgetProviderInfo) { |
| AppWidgetProviderInfo info = (AppWidgetProviderInfo) retainedObj; |
| int id = mAppWidgetHost.allocateAppWidgetId(); |
| AppWidgetManager.getInstance(getBaseContext()).bindAppWidgetIdIfAllowed(id, info.provider); |
| setAppWidget(id); |
| } else { |
| startChooseActivity(); |
| } |
| } |
| |
| @Override |
| public void onStart() { |
| super.onStart(); |
| mAppWidgetHost.startListening(); |
| } |
| |
| @Override |
| public Object onRetainNonConfigurationInstance() { |
| AppWidgetProviderInfo info = AppWidgetManager.getInstance( |
| getBaseContext()).getAppWidgetInfo(mAppWidgetId); |
| return info; |
| } |
| |
| private void startChooseActivity() { |
| int id = mAppWidgetHost.allocateAppWidgetId(); |
| Intent selectIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_PICK); |
| selectIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, id); |
| startActivityForResult(selectIntent, REQUEST_WIDGET); |
| } |
| |
| @Override |
| public void onActivityResult(int requestCode, int resultCode, Intent data) { |
| if (requestCode == REQUEST_WIDGET) { |
| if (data != null) { |
| int appWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID; |
| if (data.hasExtra(AppWidgetManager.EXTRA_APPWIDGET_ID)) { |
| appWidgetId = data.getExtras().getInt(AppWidgetManager.EXTRA_APPWIDGET_ID); |
| } |
| |
| if (resultCode == RESULT_OK) { |
| setAppWidget(appWidgetId); |
| } else { |
| mAppWidgetHost.deleteAppWidgetId(appWidgetId); |
| finish(); |
| } |
| } else { |
| finish(); |
| } |
| } else if (requestCode == REQUEST_CONFIGURE) { |
| if (data != null) { |
| int appWidgetId = data.getExtras().getInt( |
| AppWidgetManager.EXTRA_APPWIDGET_ID, AppWidgetManager.INVALID_APPWIDGET_ID); |
| if (resultCode == RESULT_OK) { |
| finishSetAppWidget(appWidgetId); |
| } else { |
| mAppWidgetHost.deleteAppWidgetId(appWidgetId); |
| } |
| } |
| } |
| } |
| |
| private void setAppWidget(int appWidgetId) { |
| if (mAppWidgetId != AppWidgetManager.INVALID_APPWIDGET_ID) { |
| mAppWidgetHost.deleteAppWidgetId(mAppWidgetId); |
| } |
| |
| /* Check for configuration */ |
| AppWidgetProviderInfo providerInfo = |
| AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId); |
| |
| if (providerInfo.configure != null) { |
| Intent configureIntent = new Intent(AppWidgetManager.ACTION_APPWIDGET_CONFIGURE); |
| configureIntent.setComponent(providerInfo.configure); |
| configureIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId); |
| |
| if (configureIntent != null) { |
| try { |
| startActivityForResult(configureIntent, REQUEST_CONFIGURE); |
| } catch (ActivityNotFoundException e) { |
| Log.d(LOG_TAG, "Configuration activity not found: " + e); |
| Toast errorToast = Toast.makeText( |
| getBaseContext(), R.string.configure_error, Toast.LENGTH_SHORT); |
| errorToast.show(); |
| } |
| } |
| } else { |
| finishSetAppWidget(appWidgetId); |
| } |
| } |
| |
| private void finishSetAppWidget(int appWidgetId) { |
| AppWidgetProviderInfo providerInfo = |
| AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId); |
| if (providerInfo != null) { |
| mAppWidgetView = |
| mAppWidgetHost.createView(getBaseContext(), appWidgetId, providerInfo); |
| |
| int [] dimensions = |
| getLauncherCellDimensions(providerInfo.minWidth, providerInfo.minHeight); |
| |
| mPreviewWidth = dimensions[0]; |
| mPreviewHeight = dimensions[1]; |
| |
| mAppWidgetName = |
| AppWidgetManager.getInstance(getBaseContext()).getAppWidgetInfo(appWidgetId).label; |
| mAppWidgetName = mAppWidgetName.replaceAll("[^a-zA-Z0-9]", "_"); |
| |
| ViewGroup.LayoutParams p = new ViewGroup.LayoutParams( |
| ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT); |
| mAppWidgetView.setLayoutParams(p); |
| mAppWidgetFrame.removeAllViews(); |
| mAppWidgetHost.deleteAppWidgetId(mAppWidgetId); |
| mAppWidgetFrame.addView(mAppWidgetView, mPreviewWidth, mPreviewHeight); |
| mAppWidgetId = appWidgetId; |
| } |
| } |
| |
| // Taken from CellLayout.java |
| public int[] getLauncherCellDimensions(int width, int height) { |
| // Always assume we're working with the smallest span to make sure we |
| // reserve enough space in both orientations. |
| Resources resources = getResources(); |
| int cellWidth = resources.getDimensionPixelSize(R.dimen.workspace_cell_width); |
| int cellHeight = resources.getDimensionPixelSize(R.dimen.workspace_cell_height); |
| int widthGap = resources.getDimensionPixelSize(R.dimen.workspace_width_gap); |
| int heightGap = resources.getDimensionPixelSize(R.dimen.workspace_height_gap); |
| int previewCellSize = resources.getDimensionPixelSize(R.dimen.preview_cell_size); |
| |
| // This logic imitates Launcher's CellLayout.rectToCell. |
| // Always round up to next largest cell |
| int smallerSize = Math.min(cellWidth, cellHeight); |
| int spanX = (width + smallerSize) / smallerSize; |
| int spanY = (height + smallerSize) / smallerSize; |
| |
| // We use a fixed preview cell size so that you get the same preview image for |
| // the same cell-sized widgets across all devices |
| width = spanX * previewCellSize + ((spanX - 1) * widthGap); |
| height = spanY * previewCellSize + ((spanY - 1) * heightGap); |
| return new int[] { width, height }; |
| } |
| |
| private File buildFile(String name) { |
| if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { |
| return null; |
| } |
| |
| File path = Environment.getExternalStoragePublicDirectory( |
| Environment.DIRECTORY_DOWNLOADS); |
| int orientationCode = getResources().getConfiguration().orientation; |
| String orientation; |
| if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE) { |
| orientation = "landscape"; |
| } else if (orientationCode == Configuration.ORIENTATION_PORTRAIT) { |
| orientation = "portrait"; |
| } else if (orientationCode == Configuration.ORIENTATION_SQUARE) { |
| orientation = "square"; |
| } else { |
| orientation = "undefined"; |
| } |
| return new File(path, name + "_ori_" + orientation + ".png"); |
| } |
| |
| public Bitmap getPreviewBitmap() { |
| mAppWidgetView.invalidate(); |
| Bitmap bmp = Bitmap.createBitmap( |
| mAppWidgetView.getWidth(), mAppWidgetView.getHeight(), Config.ARGB_8888); |
| Canvas c = new Canvas(bmp); |
| mAppWidgetView.draw(c); |
| return bmp; |
| } |
| |
| private boolean saveImage(Bitmap bmp, String name) { |
| File pic = buildFile(mAppWidgetName); |
| if (pic == null) { |
| Log.d(LOG_TAG, "External storage not present"); |
| return false; |
| } |
| |
| pic.getParentFile().mkdirs(); |
| FileOutputStream fout = null; |
| try { |
| fout = new FileOutputStream(pic); |
| if (!bmp.compress(CompressFormat.PNG, 100, fout)) { |
| Log.d(LOG_TAG, "Failed to compress image"); |
| return false; |
| } |
| return true; |
| } catch (IOException e) { |
| Log.d(LOG_TAG, "Error writing to disk: " + e); |
| } finally { |
| try { |
| if (fout != null) { |
| fout.close(); |
| } |
| } catch (IOException e) { |
| Log.d(LOG_TAG, "Could not close file: " + e); |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public void onBackPressed() { |
| if (!getFragmentManager().popBackStackImmediate()) { |
| startChooseActivity(); |
| } |
| } |
| |
| @Override |
| public void onClick(View v) { |
| if (v == mSnapshotButton) { |
| int textId = R.string.saving_preview; |
| |
| Toast preToast = Toast.makeText(getBaseContext(), textId, Toast.LENGTH_SHORT); |
| preToast.show(); |
| |
| Bitmap bmp = getPreviewBitmap(); |
| if (saveImage(bmp, mAppWidgetName)) { |
| textId = R.string.preview_saved; |
| } else { |
| textId = R.string.preview_save_error; |
| } |
| |
| Toast postToast = Toast.makeText(getBaseContext(), textId, Toast.LENGTH_SHORT); |
| postToast.show(); |
| } else if (v == mEmailButton) { |
| File file = buildFile(mAppWidgetName); |
| if (file.exists()) { |
| Intent emailIntent = new Intent(Intent.ACTION_SEND); |
| emailIntent.setType("image/png"); |
| emailIntent.putExtra(Intent.EXTRA_SUBJECT, |
| getResources().getString(R.string.email_subject)); |
| emailIntent.putExtra(Intent.EXTRA_TEXT, |
| getResources().getString(R.string.email_body)); |
| emailIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(file)); |
| startActivity(emailIntent); |
| } else { |
| Toast postToast = Toast.makeText( |
| getBaseContext(), R.string.no_preview, Toast.LENGTH_SHORT); |
| postToast.show(); |
| } |
| } |
| } |
| } |