Resize avatar for shortcut icon. Close #107.

src/com/xabber/android/data/extension/avatar/AvatarManager.java

@@ -462,4 +462,29 @@ public class AvatarManager implements OnLoadListener, OnLowMemoryListener,
 			setHash(bareAddress, hash);
 		}
 	}
+
+	/**
+	 * @param bitmap
+	 * @return Scaled bitmap to be used for shortcut.
+	 */
+	public Bitmap createShortcutBitmap(Bitmap bitmap) {
+		int size = getLauncherLargeIconSize();
+		int max = Math.max(bitmap.getWidth(), bitmap.getHeight());
+		if (max == size)
+			return bitmap;
+		double scale = ((double) size) / max;
+		int width = (int) (bitmap.getWidth() * scale);
+		int height = (int) (bitmap.getHeight() * scale);
+		return Bitmap.createScaledBitmap(bitmap, width, height, true);
+	}
+
+	private int getLauncherLargeIconSize() {
+		if (Application.SDK_INT < 9)
+			return BaseShortcutHelper.getLauncherLargeIconSize();
+		else if (Application.SDK_INT < 11)
+			return GingerbreadShortcutHelper.getLauncherLargeIconSize();
+		else
+			return HoneycombShortcutHelper.getLauncherLargeIconSize();
+	}
+
 }

src/com/xabber/android/data/extension/avatar/BaseShortcutHelper.java

+package com.xabber.android.data.extension.avatar;
+
+import android.content.res.Resources;
+
+import com.xabber.android.data.Application;
+
+/**
+ * Helper class to create shortcuts under Android < 2.3.
+ * 
+ * @author alexander.ivanov
+ * 
+ */
+public class BaseShortcutHelper {
+
+	/**
+	 * Get the preferred launcher icon size. This is used when custom drawables
+	 * are created (e.g., for shortcuts).
+	 * 
+	 * Based on {@link android.app.ActivityManager#getLauncherLargeIconSize()}
+	 * for Android 3+.
+	 * 
+	 * @return dimensions of square icons in terms of pixels
+	 */
+	static int getLauncherLargeIconSize() {
+		final Resources res = Application.getInstance().getResources();
+		return res.getDimensionPixelSize(android.R.dimen.app_icon_size);
+	}
+
+}

src/com/xabber/android/data/extension/avatar/GingerbreadShortcutHelper.java

+package com.xabber.android.data.extension.avatar;
+
+import android.annotation.TargetApi;
+import android.content.res.Configuration;
+import android.content.res.Resources;
+import android.os.Build;
+import android.util.DisplayMetrics;
+
+import com.xabber.android.data.Application;
+
+/**
+ * Helper class to create shortcuts under Android >= 2.3.
+ * 
+ * @author alexander.ivanov
+ * 
+ */
+@TargetApi(Build.VERSION_CODES.GINGERBREAD)
+public class GingerbreadShortcutHelper {
+
+	/**
+	 * Get the preferred launcher icon size. This is used when custom drawables
+	 * are created (e.g., for shortcuts).
+	 * 
+	 * Based on {@link android.app.ActivityManager#getLauncherLargeIconSize()}
+	 * for Android 3+.
+	 * 
+	 * @return dimensions of square icons in terms of pixels
+	 */
+	static int getLauncherLargeIconSize() {
+		final Resources res = Application.getInstance().getResources();
+		final int size = res
+				.getDimensionPixelSize(android.R.dimen.app_icon_size);
+		if ((res.getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) != Configuration.SCREENLAYOUT_SIZE_XLARGE) {
+			return size;
+		}
+		final int density = res.getDisplayMetrics().densityDpi;
+
+		switch (density) {
+		case DisplayMetrics.DENSITY_LOW:
+			return (size * DisplayMetrics.DENSITY_MEDIUM)
+					/ DisplayMetrics.DENSITY_LOW;
+		case DisplayMetrics.DENSITY_MEDIUM:
+			return (size * DisplayMetrics.DENSITY_HIGH)
+					/ DisplayMetrics.DENSITY_MEDIUM;
+		case DisplayMetrics.DENSITY_HIGH:
+			return (size * DisplayMetrics.DENSITY_XHIGH)
+					/ DisplayMetrics.DENSITY_HIGH;
+		case DisplayMetrics.DENSITY_XHIGH:
+			return (size * DisplayMetrics.DENSITY_MEDIUM * 2)
+					/ DisplayMetrics.DENSITY_XHIGH;
+		default:
+			return size;
+		}
+	}
+
+}

src/com/xabber/android/data/extension/avatar/HoneycombShortcutHelper.java

+package com.xabber.android.data.extension.avatar;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+import android.content.Context;
+
+import com.xabber.android.data.Application;
+
+/**
+ * Helper class to create shortcuts under Android >= 3.
+ * 
+ * @author alexander.ivanov
+ * 
+ */
+public class HoneycombShortcutHelper {
+
+	/**
+	 * Get the preferred launcher icon size. This is used when custom drawables
+	 * are created (e.g., for shortcuts).
+	 * 
+	 * @return dimensions of square icons in terms of pixels
+	 */
+	static int getLauncherLargeIconSize() {
+		android.app.ActivityManager activityManager = (android.app.ActivityManager) Application
+				.getInstance().getSystemService(Context.ACTIVITY_SERVICE);
+		Method method;
+		try {
+			method = activityManager.getClass().getMethod(
+					"getLauncherLargeIconSize", (Class[]) null);
+		} catch (SecurityException e) {
+			throw new RuntimeException(e);
+		} catch (NoSuchMethodException e) {
+			throw new RuntimeException(e);
+		}
+		try {
+			return (Integer) method.invoke(activityManager, (Object[]) null);
+		} catch (IllegalArgumentException e) {
+			throw new RuntimeException(e);
+		} catch (IllegalAccessException e) {
+			throw new RuntimeException(e);
+		} catch (InvocationTargetException e) {
+			throw new RuntimeException(e);
+		}
+	}
+
+}

src/com/xabber/android/ui/ContactList.java

@@ -25,6 +25,7 @@ import android.content.DialogInterface.OnCancelListener;
 import android.content.Intent;
 import android.content.res.ColorStateList;
 import android.content.res.TypedArray;
+import android.graphics.Bitmap;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.os.Bundle;
@@ -973,18 +974,17 @@ public class ContactList extends ManagedListActivity implements
 								abstractContact.getUser()));
 				intent.putExtra(Intent.EXTRA_SHORTCUT_NAME,
 						abstractContact.getName());
+				Bitmap bitmap;
 				if (MUCManager.getInstance()
 						.hasRoom(abstractContact.getAccount(),
 								abstractContact.getUser()))
-					intent.putExtra(
-							Intent.EXTRA_SHORTCUT_ICON,
-							AvatarManager.getInstance().getRoomBitmap(
-									abstractContact.getUser()));
+					bitmap = AvatarManager.getInstance().getRoomBitmap(
+							abstractContact.getUser());
 				else
-					intent.putExtra(
-							Intent.EXTRA_SHORTCUT_ICON,
-							AvatarManager.getInstance().getUserBitmap(
-									abstractContact.getUser()));
+					bitmap = AvatarManager.getInstance().getUserBitmap(
+							abstractContact.getUser());
+				intent.putExtra(Intent.EXTRA_SHORTCUT_ICON, AvatarManager
+						.getInstance().createShortcutBitmap(bitmap));
 				setResult(RESULT_OK, intent);
 				finish();
 			} else {