src/com/android/browser/BookmarkUtils.java - platform/packages/apps/Browser - Git at Google

 /*
  * 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.browser;

 import android.app.ActivityManager;
 import android.app.AlertDialog;
 import android.content.ContentUris;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Path;
 import android.graphics.PorterDuff;
 import android.graphics.PorterDuffXfermode;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.drawable.BitmapDrawable;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.PaintDrawable;
 import android.net.Uri;
 import android.os.Message;
 import android.provider.Browser;
 import android.provider.BrowserContract;

 public class BookmarkUtils {
     private final static String LOGTAG = "BookmarkUtils";

     // XXX: There is no public string defining this intent so if Home changes the value, we
     // have to update this string.
     private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT";

     enum BookmarkIconType {
         ICON_INSTALLABLE_WEB_APP, // Icon for an installable web app (launches WebAppRuntime).
         ICON_HOME_SHORTCUT,        // Icon for a shortcut on the home screen (launches Browser).
         ICON_WIDGET,
     }

     /**
      * Creates an icon to be associated with this bookmark. If available, the apple touch icon
      * will be used, else we draw our own depending on the type of "bookmark" being created.
      */
     static Bitmap createIcon(Context context, Bitmap touchIcon, Bitmap favicon,
             BookmarkIconType type) {
         final ActivityManager am = (ActivityManager) context
                 .getSystemService(Context.ACTIVITY_SERVICE);
         final int iconDimension = am.getLauncherLargeIconSize();
         final int iconDensity = am.getLauncherLargeIconDensity();
         return createIcon(context, touchIcon, favicon, type, iconDimension, iconDensity);
     }

     static Drawable createListFaviconBackground(Context context) {
         PaintDrawable faviconBackground = new PaintDrawable();
         Resources res = context.getResources();
         int padding = res.getDimensionPixelSize(R.dimen.list_favicon_padding);
         faviconBackground.setPadding(padding, padding, padding, padding);
         faviconBackground.getPaint().setColor(context.getResources()
                 .getColor(R.color.bookmarkListFaviconBackground));
         faviconBackground.setCornerRadius(
                 res.getDimension(R.dimen.list_favicon_corner_radius));
         return faviconBackground;
     }

     private static Bitmap createIcon(Context context, Bitmap touchIcon,
             Bitmap favicon, BookmarkIconType type, int iconDimension, int iconDensity) {
         Bitmap bm = Bitmap.createBitmap(iconDimension, iconDimension, Bitmap.Config.ARGB_8888);
         Canvas canvas = new Canvas(bm);
         Rect iconBounds = new Rect(0, 0, bm.getWidth(), bm.getHeight());

         // Use the apple-touch-icon if available
         if (touchIcon != null) {
             drawTouchIconToCanvas(touchIcon, canvas, iconBounds);
         } else {
             // No touch icon so create our own.
             // Set the background based on the type of shortcut (either webapp or home shortcut).
             Bitmap icon = getIconBackground(context, type, iconDensity);

             if (icon != null) {
                 // Now draw the correct icon background into our new bitmap.
                 Paint p = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
                 canvas.drawBitmap(icon, null, iconBounds, p);
             }

             // If we have a favicon, overlay it in a nice rounded white box on top of the
             // background.
             if (favicon != null) {
                 drawFaviconToCanvas(context, favicon, canvas, iconBounds, type);
             }
         }
         canvas.setBitmap(null);
         return bm;
     }

     /**
      * Convenience method for creating an intent that will add a shortcut to the home screen.
      */
     static Intent createAddToHomeIntent(Context context, String url, String title,
             Bitmap touchIcon, Bitmap favicon) {
         Intent i = new Intent(INSTALL_SHORTCUT);
         Intent shortcutIntent = createShortcutIntent(url);
         i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
         i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);
         i.putExtra(Intent.EXTRA_SHORTCUT_ICON, createIcon(context, touchIcon, favicon,
                 BookmarkIconType.ICON_HOME_SHORTCUT));

         // Do not allow duplicate items
         i.putExtra("duplicate", false);
         return i;
     }

     static Intent createShortcutIntent(String url) {
         Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
         long urlHash = url.hashCode();
         long uniqueId = (urlHash << 32) | shortcutIntent.hashCode();
         shortcutIntent.putExtra(Browser.EXTRA_APPLICATION_ID, Long.toString(uniqueId));
         return shortcutIntent;
     }

     private static Bitmap getIconBackground(Context context, BookmarkIconType type, int density) {
         if (type == BookmarkIconType.ICON_HOME_SHORTCUT) {
             // Want to create a shortcut icon on the homescreen, so the icon
             // background is the red bookmark.
             Drawable drawable = context.getResources().getDrawableForDensity(
                     R.mipmap.ic_launcher_shortcut_browser_bookmark, density);
             if (drawable instanceof BitmapDrawable) {
                 BitmapDrawable bd = (BitmapDrawable) drawable;
                 return bd.getBitmap();
             }
         } else if (type == BookmarkIconType.ICON_INSTALLABLE_WEB_APP) {
             // Use the web browser icon as the background for the icon for an installable
             // web app.
             Drawable drawable = context.getResources().getDrawableForDensity(
                     R.mipmap.ic_launcher_browser, density);
             if (drawable instanceof BitmapDrawable) {
                 BitmapDrawable bd = (BitmapDrawable) drawable;
                 return bd.getBitmap();
             }
         }
         return null;
     }

     private static void drawTouchIconToCanvas(Bitmap touchIcon, Canvas canvas, Rect iconBounds) {
         Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight());

         // Paint used for scaling the bitmap and drawing the rounded rect.
         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
         paint.setFilterBitmap(true);
         canvas.drawBitmap(touchIcon, src, iconBounds, paint);

         // Construct a path from a round rect. This will allow drawing with
         // an inverse fill so we can punch a hole using the round rect.
         Path path = new Path();
         path.setFillType(Path.FillType.INVERSE_WINDING);
         RectF rect = new RectF(iconBounds);
         rect.inset(1, 1);
         path.addRoundRect(rect, 8f, 8f, Path.Direction.CW);

         // Reuse the paint and clear the outside of the rectangle.
         paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
         canvas.drawPath(path, paint);
     }

     private static void drawFaviconToCanvas(Context context, Bitmap favicon,
             Canvas canvas, Rect iconBounds, BookmarkIconType type) {
         // Make a Paint for the white background rectangle and for
         // filtering the favicon.
         Paint p = new Paint(Paint.ANTI_ALIAS_FLAG | Paint.FILTER_BITMAP_FLAG);
         p.setStyle(Paint.Style.FILL_AND_STROKE);
         if (type == BookmarkIconType.ICON_WIDGET) {
             p.setColor(context.getResources()
                     .getColor(R.color.bookmarkWidgetFaviconBackground));
         } else {
             p.setColor(Color.WHITE);
         }

         // Create a rectangle that is slightly wider than the favicon
         int faviconDimension = context.getResources().getDimensionPixelSize(R.dimen.favicon_size);
         int faviconPaddedRectDimension;
         if (type == BookmarkIconType.ICON_WIDGET) {
             faviconPaddedRectDimension = canvas.getWidth();
         } else {
             faviconPaddedRectDimension = context.getResources().getDimensionPixelSize(
                     R.dimen.favicon_padded_size);
         }
         float padding = (faviconPaddedRectDimension - faviconDimension) / 2;
         final float x = iconBounds.exactCenterX() - (faviconPaddedRectDimension / 2);
         float y = iconBounds.exactCenterY() - (faviconPaddedRectDimension / 2);
         if (type != BookmarkIconType.ICON_WIDGET) {
             // Note: Subtract from the y position since the box is
             // slightly higher than center. Use padding since it is already
             // device independent.
             y -= padding;
         }
         RectF r = new RectF(x, y, x + faviconPaddedRectDimension, y + faviconPaddedRectDimension);
         // Draw a white rounded rectangle behind the favicon
         canvas.drawRoundRect(r, 3, 3, p);

         // Draw the favicon in the same rectangle as the rounded
         // rectangle but inset by the padding
         // (results in a 16x16 favicon).
         r.inset(padding, padding);
         canvas.drawBitmap(favicon, null, r, null);
     }

     /* package */ static Uri getBookmarksUri(Context context) {
         return BrowserContract.Bookmarks.CONTENT_URI;
     }

     /**
      * Show a confirmation dialog to remove a bookmark.
      * @param id Id of the bookmark to remove
      * @param title Title of the bookmark, to be displayed in the confirmation method.
      * @param context Package Context for strings, dialog, ContentResolver
      * @param msg Message to send if the bookmark is deleted.
      */
     static void displayRemoveBookmarkDialog( final long id, final String title,
             final Context context, final Message msg) {

         new AlertDialog.Builder(context)
                 .setIconAttribute(android.R.attr.alertDialogIcon)
                 .setMessage(context.getString(R.string.delete_bookmark_warning,
                         title))
                 .setPositiveButton(R.string.ok,
                         new DialogInterface.OnClickListener() {
                             @Override
                             public void onClick(DialogInterface dialog, int whichButton) {
                                 if (msg != null) {
                                     msg.sendToTarget();
                                 }
                                 Runnable runnable = new Runnable(){
                                     @Override
                                     public void run() {
                                         Uri uri = ContentUris.withAppendedId(
                                                 BrowserContract.Bookmarks.CONTENT_URI,
                                                 id);
                                         context.getContentResolver().delete(uri, null, null);
                                     }
                                 };
                                 new Thread(runnable).start();
                             }
                         })
                 .setNegativeButton(R.string.cancel, null)
                 .show();
     }
 }
	/*
	* 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.browser;

	import android.app.ActivityManager;
	import android.app.AlertDialog;
	import android.content.ContentUris;
	import android.content.Context;
	import android.content.DialogInterface;
	import android.content.Intent;
	import android.content.res.Resources;
	import android.graphics.Bitmap;
	import android.graphics.Canvas;
	import android.graphics.Color;
	import android.graphics.Paint;
	import android.graphics.Path;
	import android.graphics.PorterDuff;
	import android.graphics.PorterDuffXfermode;
	import android.graphics.Rect;
	import android.graphics.RectF;
	import android.graphics.drawable.BitmapDrawable;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.PaintDrawable;
	import android.net.Uri;
	import android.os.Message;
	import android.provider.Browser;
	import android.provider.BrowserContract;

	public class BookmarkUtils {
	private final static String LOGTAG = "BookmarkUtils";

	// XXX: There is no public string defining this intent so if Home changes the value, we
	// have to update this string.
	private static final String INSTALL_SHORTCUT = "com.android.launcher.action.INSTALL_SHORTCUT";

	enum BookmarkIconType {
	ICON_INSTALLABLE_WEB_APP, // Icon for an installable web app (launches WebAppRuntime).
	ICON_HOME_SHORTCUT, // Icon for a shortcut on the home screen (launches Browser).
	ICON_WIDGET,
	}

	/**
	* Creates an icon to be associated with this bookmark. If available, the apple touch icon
	* will be used, else we draw our own depending on the type of "bookmark" being created.
	*/
	static Bitmap createIcon(Context context, Bitmap touchIcon, Bitmap favicon,
	BookmarkIconType type) {
	final ActivityManager am = (ActivityManager) context
	.getSystemService(Context.ACTIVITY_SERVICE);
	final int iconDimension = am.getLauncherLargeIconSize();
	final int iconDensity = am.getLauncherLargeIconDensity();
	return createIcon(context, touchIcon, favicon, type, iconDimension, iconDensity);
	}

	static Drawable createListFaviconBackground(Context context) {
	PaintDrawable faviconBackground = new PaintDrawable();
	Resources res = context.getResources();
	int padding = res.getDimensionPixelSize(R.dimen.list_favicon_padding);
	faviconBackground.setPadding(padding, padding, padding, padding);
	faviconBackground.getPaint().setColor(context.getResources()
	.getColor(R.color.bookmarkListFaviconBackground));
	faviconBackground.setCornerRadius(
	res.getDimension(R.dimen.list_favicon_corner_radius));
	return faviconBackground;
	}

	private static Bitmap createIcon(Context context, Bitmap touchIcon,
	Bitmap favicon, BookmarkIconType type, int iconDimension, int iconDensity) {
	Bitmap bm = Bitmap.createBitmap(iconDimension, iconDimension, Bitmap.Config.ARGB_8888);
	Canvas canvas = new Canvas(bm);
	Rect iconBounds = new Rect(0, 0, bm.getWidth(), bm.getHeight());

	// Use the apple-touch-icon if available
	if (touchIcon != null) {
	drawTouchIconToCanvas(touchIcon, canvas, iconBounds);
	} else {
	// No touch icon so create our own.
	// Set the background based on the type of shortcut (either webapp or home shortcut).
	Bitmap icon = getIconBackground(context, type, iconDensity);

	if (icon != null) {
	// Now draw the correct icon background into our new bitmap.
	Paint p = new Paint(Paint.ANTI_ALIAS_FLAG \| Paint.FILTER_BITMAP_FLAG);
	canvas.drawBitmap(icon, null, iconBounds, p);
	}

	// If we have a favicon, overlay it in a nice rounded white box on top of the
	// background.
	if (favicon != null) {
	drawFaviconToCanvas(context, favicon, canvas, iconBounds, type);
	}
	}
	canvas.setBitmap(null);
	return bm;
	}

	/**
	* Convenience method for creating an intent that will add a shortcut to the home screen.
	*/
	static Intent createAddToHomeIntent(Context context, String url, String title,
	Bitmap touchIcon, Bitmap favicon) {
	Intent i = new Intent(INSTALL_SHORTCUT);
	Intent shortcutIntent = createShortcutIntent(url);
	i.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortcutIntent);
	i.putExtra(Intent.EXTRA_SHORTCUT_NAME, title);
	i.putExtra(Intent.EXTRA_SHORTCUT_ICON, createIcon(context, touchIcon, favicon,
	BookmarkIconType.ICON_HOME_SHORTCUT));

	// Do not allow duplicate items
	i.putExtra("duplicate", false);
	return i;
	}

	static Intent createShortcutIntent(String url) {
	Intent shortcutIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
	long urlHash = url.hashCode();
	long uniqueId = (urlHash << 32) \| shortcutIntent.hashCode();
	shortcutIntent.putExtra(Browser.EXTRA_APPLICATION_ID, Long.toString(uniqueId));
	return shortcutIntent;
	}

	private static Bitmap getIconBackground(Context context, BookmarkIconType type, int density) {
	if (type == BookmarkIconType.ICON_HOME_SHORTCUT) {
	// Want to create a shortcut icon on the homescreen, so the icon
	// background is the red bookmark.
	Drawable drawable = context.getResources().getDrawableForDensity(
	R.mipmap.ic_launcher_shortcut_browser_bookmark, density);
	if (drawable instanceof BitmapDrawable) {
	BitmapDrawable bd = (BitmapDrawable) drawable;
	return bd.getBitmap();
	}
	} else if (type == BookmarkIconType.ICON_INSTALLABLE_WEB_APP) {
	// Use the web browser icon as the background for the icon for an installable
	// web app.
	Drawable drawable = context.getResources().getDrawableForDensity(
	R.mipmap.ic_launcher_browser, density);
	if (drawable instanceof BitmapDrawable) {
	BitmapDrawable bd = (BitmapDrawable) drawable;
	return bd.getBitmap();
	}
	}
	return null;
	}

	private static void drawTouchIconToCanvas(Bitmap touchIcon, Canvas canvas, Rect iconBounds) {
	Rect src = new Rect(0, 0, touchIcon.getWidth(), touchIcon.getHeight());

	// Paint used for scaling the bitmap and drawing the rounded rect.
	Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
	paint.setFilterBitmap(true);
	canvas.drawBitmap(touchIcon, src, iconBounds, paint);

	// Construct a path from a round rect. This will allow drawing with
	// an inverse fill so we can punch a hole using the round rect.
	Path path = new Path();
	path.setFillType(Path.FillType.INVERSE_WINDING);
	RectF rect = new RectF(iconBounds);
	rect.inset(1, 1);
	path.addRoundRect(rect, 8f, 8f, Path.Direction.CW);

	// Reuse the paint and clear the outside of the rectangle.
	paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
	canvas.drawPath(path, paint);
	}

	private static void drawFaviconToCanvas(Context context, Bitmap favicon,
	Canvas canvas, Rect iconBounds, BookmarkIconType type) {
	// Make a Paint for the white background rectangle and for
	// filtering the favicon.
	Paint p = new Paint(Paint.ANTI_ALIAS_FLAG \| Paint.FILTER_BITMAP_FLAG);
	p.setStyle(Paint.Style.FILL_AND_STROKE);
	if (type == BookmarkIconType.ICON_WIDGET) {
	p.setColor(context.getResources()
	.getColor(R.color.bookmarkWidgetFaviconBackground));
	} else {
	p.setColor(Color.WHITE);
	}

	// Create a rectangle that is slightly wider than the favicon
	int faviconDimension = context.getResources().getDimensionPixelSize(R.dimen.favicon_size);
	int faviconPaddedRectDimension;
	if (type == BookmarkIconType.ICON_WIDGET) {
	faviconPaddedRectDimension = canvas.getWidth();
	} else {
	faviconPaddedRectDimension = context.getResources().getDimensionPixelSize(
	R.dimen.favicon_padded_size);
	}
	float padding = (faviconPaddedRectDimension - faviconDimension) / 2;
	final float x = iconBounds.exactCenterX() - (faviconPaddedRectDimension / 2);
	float y = iconBounds.exactCenterY() - (faviconPaddedRectDimension / 2);
	if (type != BookmarkIconType.ICON_WIDGET) {
	// Note: Subtract from the y position since the box is
	// slightly higher than center. Use padding since it is already
	// device independent.
	y -= padding;
	}
	RectF r = new RectF(x, y, x + faviconPaddedRectDimension, y + faviconPaddedRectDimension);
	// Draw a white rounded rectangle behind the favicon
	canvas.drawRoundRect(r, 3, 3, p);

	// Draw the favicon in the same rectangle as the rounded
	// rectangle but inset by the padding
	// (results in a 16x16 favicon).
	r.inset(padding, padding);
	canvas.drawBitmap(favicon, null, r, null);
	}

	/* package */ static Uri getBookmarksUri(Context context) {
	return BrowserContract.Bookmarks.CONTENT_URI;
	}

	/**
	* Show a confirmation dialog to remove a bookmark.
	* @param id Id of the bookmark to remove
	* @param title Title of the bookmark, to be displayed in the confirmation method.
	* @param context Package Context for strings, dialog, ContentResolver
	* @param msg Message to send if the bookmark is deleted.
	*/
	static void displayRemoveBookmarkDialog( final long id, final String title,
	final Context context, final Message msg) {

	new AlertDialog.Builder(context)
	.setIconAttribute(android.R.attr.alertDialogIcon)
	.setMessage(context.getString(R.string.delete_bookmark_warning,
	title))
	.setPositiveButton(R.string.ok,
	new DialogInterface.OnClickListener() {
	@Override
	public void onClick(DialogInterface dialog, int whichButton) {
	if (msg != null) {
	msg.sendToTarget();
	}
	Runnable runnable = new Runnable(){
	@Override
	public void run() {
	Uri uri = ContentUris.withAppendedId(
	BrowserContract.Bookmarks.CONTENT_URI,
	id);
	context.getContentResolver().delete(uri, null, null);
	}
	};
	new Thread(runnable).start();
	}
	})
	.setNegativeButton(R.string.cancel, null)
	.show();
	}
	}