1 files changed, 298 insertions, 0 deletions
diff --git a/conversations/src/main/java/eu/siacs/conversations/services/AvatarService.java b/conversations/src/main/java/eu/siacs/conversations/services/AvatarService.java
new file mode 100644
index 00000000..c0668a19
--- /dev/null
+++ b/conversations/src/main/java/eu/siacs/conversations/services/AvatarService.java
@@ -0,0 +1,298 @@
+package eu.siacs.conversations.services;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Locale;
+
+import eu.siacs.conversations.Config;
+import eu.siacs.conversations.entities.Account;
+import eu.siacs.conversations.entities.Bookmark;
+import eu.siacs.conversations.entities.Contact;
+import eu.siacs.conversations.entities.Conversation;
+import eu.siacs.conversations.entities.ListItem;
+import eu.siacs.conversations.entities.MucOptions;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.graphics.Typeface;
+import android.net.Uri;
+import android.util.Log;
+
+public class AvatarService {
+
+	private static final int FG_COLOR = 0xFFFAFAFA;
+	private static final int TRANSPARENT = 0x00000000;
+
+	private static final String PREFIX_CONTACT = "contact";
+	private static final String PREFIX_CONVERSATION = "conversation";
+	private static final String PREFIX_ACCOUNT = "account";
+	private static final String PREFIX_GENERIC = "generic";
+
+	private ArrayList<Integer> sizes = new ArrayList<Integer>();
+
+	protected XmppConnectionService mXmppConnectionService = null;
+
+	public AvatarService(XmppConnectionService service) {
+		this.mXmppConnectionService = service;
+	}
+
+	public Bitmap get(Contact contact, int size) {
+		final String KEY = key(contact, size);
+		Bitmap avatar = this.mXmppConnectionService.getBitmapCache().get(KEY);
+		if (avatar != null) {
+			return avatar;
+		}
+		Log.d(Config.LOGTAG, "no cache hit for " + KEY);
+		avatar = mXmppConnectionService.getFileBackend().getAvatar(
+				contact.getAvatar(), size);
+		if (avatar == null) {
+			if (contact.getProfilePhoto() != null) {
+				avatar = mXmppConnectionService.getFileBackend()
+						.cropCenterSquare(Uri.parse(contact.getProfilePhoto()),
+								size);
+				if (avatar == null) {
+					avatar = get(contact.getDisplayName(), size);
+				}
+			} else {
+				avatar = get(contact.getDisplayName(), size);
+			}
+		}
+		this.mXmppConnectionService.getBitmapCache().put(KEY, avatar);
+		return avatar;
+	}
+
+	public void clear(Contact contact) {
+		for (Integer size : sizes) {
+			this.mXmppConnectionService.getBitmapCache().remove(
+					key(contact, size));
+		}
+	}
+
+	private String key(Contact contact, int size) {
+		synchronized (this.sizes) {
+			if (!this.sizes.contains(size)) {
+				this.sizes.add(size);
+			}
+		}
+		return PREFIX_CONTACT + "_" + contact.getAccount().getJid() + "_"
+				+ contact.getJid() + "_" + String.valueOf(size);
+	}
+
+	public Bitmap get(ListItem item, int size) {
+		if (item instanceof Contact) {
+			return get((Contact) item, size);
+		} else if (item instanceof Bookmark) {
+			Bookmark bookmark = (Bookmark) item;
+			if (bookmark.getConversation() != null) {
+				return get(bookmark.getConversation(), size);
+			} else {
+				return get(bookmark.getDisplayName(), size);
+			}
+		} else {
+			return get(item.getDisplayName(), size);
+		}
+	}
+
+	public Bitmap get(Conversation conversation, int size) {
+		if (conversation.getMode() == Conversation.MODE_SINGLE) {
+			return get(conversation.getContact(), size);
+		} else {
+			return get(conversation.getMucOptions(), size);
+		}
+	}
+
+	public void clear(Conversation conversation) {
+		if (conversation.getMode() == Conversation.MODE_SINGLE) {
+			clear(conversation.getContact());
+		} else {
+			clear(conversation.getMucOptions());
+		}
+	}
+
+	public Bitmap get(MucOptions mucOptions, int size) {
+		final String KEY = key(mucOptions, size);
+		Bitmap bitmap = this.mXmppConnectionService.getBitmapCache().get(KEY);
+		if (bitmap != null) {
+			return bitmap;
+		}
+		Log.d(Config.LOGTAG, "no cache hit for " + KEY);
+		List<MucOptions.User> users = mucOptions.getUsers();
+		int count = users.size();
+		bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
+		Canvas canvas = new Canvas(bitmap);
+		bitmap.eraseColor(TRANSPARENT);
+
+		if (count == 0) {
+			String name = mucOptions.getConversation().getName();
+			String letter = name.substring(0, 1);
+			int color = this.getColorForName(name);
+			drawTile(canvas, letter, color, 0, 0, size, size);
+		} else if (count == 1) {
+			drawTile(canvas, users.get(0), 0, 0, size, size);
+		} else if (count == 2) {
+			drawTile(canvas, users.get(0), 0, 0, size / 2 - 1, size);
+			drawTile(canvas, users.get(1), size / 2 + 1, 0, size, size);
+		} else if (count == 3) {
+			drawTile(canvas, users.get(0), 0, 0, size / 2 - 1, size);
+			drawTile(canvas, users.get(1), size / 2 + 1, 0, size, size / 2 - 1);
+			drawTile(canvas, users.get(2), size / 2 + 1, size / 2 + 1, size,
+					size);
+		} else if (count == 4) {
+			drawTile(canvas, users.get(0), 0, 0, size / 2 - 1, size / 2 - 1);
+			drawTile(canvas, users.get(1), 0, size / 2 + 1, size / 2 - 1, size);
+			drawTile(canvas, users.get(2), size / 2 + 1, 0, size, size / 2 - 1);
+			drawTile(canvas, users.get(3), size / 2 + 1, size / 2 + 1, size,
+					size);
+		} else {
+			drawTile(canvas, users.get(0), 0, 0, size / 2 - 1, size / 2 - 1);
+			drawTile(canvas, users.get(1), 0, size / 2 + 1, size / 2 - 1, size);
+			drawTile(canvas, users.get(2), size / 2 + 1, 0, size, size / 2 - 1);
+			drawTile(canvas, "\u2026", 0xFF202020, size / 2 + 1, size / 2 + 1,
+					size, size);
+		}
+		this.mXmppConnectionService.getBitmapCache().put(KEY, bitmap);
+		return bitmap;
+	}
+
+	public void clear(MucOptions options) {
+		for (Integer size : sizes) {
+			this.mXmppConnectionService.getBitmapCache().remove(
+					key(options, size));
+		}
+	}
+
+	private String key(MucOptions options, int size) {
+		synchronized (this.sizes) {
+			if (!this.sizes.contains(size)) {
+				this.sizes.add(size);
+			}
+		}
+		return PREFIX_CONVERSATION + "_" + options.getConversation().getUuid()
+				+ "_" + String.valueOf(size);
+	}
+
+	public Bitmap get(Account account, int size) {
+		final String KEY = key(account, size);
+		Bitmap avatar = mXmppConnectionService.getBitmapCache().get(KEY);
+		if (avatar != null) {
+			return avatar;
+		}
+		Log.d(Config.LOGTAG, "no cache hit for " + KEY);
+		avatar = mXmppConnectionService.getFileBackend().getAvatar(
+				account.getAvatar(), size);
+		if (avatar == null) {
+			avatar = get(account.getJid(), size);
+		}
+		mXmppConnectionService.getBitmapCache().put(KEY, avatar);
+		return avatar;
+	}
+
+	public void clear(Account account) {
+		for (Integer size : sizes) {
+			this.mXmppConnectionService.getBitmapCache().remove(
+					key(account, size));
+		}
+	}
+
+	private String key(Account account, int size) {
+		synchronized (this.sizes) {
+			if (!this.sizes.contains(size)) {
+				this.sizes.add(size);
+			}
+		}
+		return PREFIX_ACCOUNT + "_" + account.getUuid() + "_"
+				+ String.valueOf(size);
+	}
+
+	public Bitmap get(String name, int size) {
+		final String KEY = key(name, size);
+		Bitmap bitmap = mXmppConnectionService.getBitmapCache().get(KEY);
+		if (bitmap != null) {
+			return bitmap;
+		}
+		Log.d(Config.LOGTAG, "no cache hit for " + KEY);
+		bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
+		Canvas canvas = new Canvas(bitmap);
+		String letter = name.substring(0, 1);
+		int color = this.getColorForName(name);
+		drawTile(canvas, letter, color, 0, 0, size, size);
+		mXmppConnectionService.getBitmapCache().put(KEY, bitmap);
+		return bitmap;
+	}
+
+	private String key(String name, int size) {
+		synchronized (this.sizes) {
+			if (!this.sizes.contains(size)) {
+				this.sizes.add(size);
+			}
+		}
+		return PREFIX_GENERIC + "_" + name + "_" + String.valueOf(size);
+	}
+
+	private void drawTile(Canvas canvas, String letter, int tileColor,
+			int left, int top, int right, int bottom) {
+		letter = letter.toUpperCase(Locale.getDefault());
+		Paint tilePaint = new Paint(), textPaint = new Paint();
+		tilePaint.setColor(tileColor);
+		textPaint.setFlags(Paint.ANTI_ALIAS_FLAG);
+		textPaint.setColor(FG_COLOR);
+		textPaint.setTypeface(Typeface.create("sans-serif-light",
+				Typeface.NORMAL));
+		textPaint.setTextSize((float) ((right - left) * 0.8));
+		Rect rect = new Rect();
+
+		canvas.drawRect(new Rect(left, top, right, bottom), tilePaint);
+		textPaint.getTextBounds(letter, 0, 1, rect);
+		float width = textPaint.measureText(letter);
+		canvas.drawText(letter, (right + left) / 2 - width / 2, (top + bottom)
+				/ 2 + rect.height() / 2, textPaint);
+	}
+
+	private void drawTile(Canvas canvas, MucOptions.User user, int left,
+			int top, int right, int bottom) {
+		Contact contact = user.getContact();
+		if (contact != null) {
+			Uri uri = null;
+			if (contact.getAvatar() != null) {
+				uri = mXmppConnectionService.getFileBackend().getAvatarUri(
+						contact.getAvatar());
+			} else if (contact.getProfilePhoto() != null) {
+				uri = Uri.parse(contact.getProfilePhoto());
+			}
+			if (uri != null) {
+				Bitmap bitmap = mXmppConnectionService.getFileBackend()
+						.cropCenter(uri, bottom - top, right - left);
+				if (bitmap != null) {
+					drawTile(canvas, bitmap, left, top, right, bottom);
+				} else {
+					String letter = user.getName().substring(0, 1);
+					int color = this.getColorForName(user.getName());
+					drawTile(canvas, letter, color, left, top, right, bottom);
+				}
+			} else {
+				String letter = user.getName().substring(0, 1);
+				int color = this.getColorForName(user.getName());
+				drawTile(canvas, letter, color, left, top, right, bottom);
+			}
+		} else {
+			String letter = user.getName().substring(0, 1);
+			int color = this.getColorForName(user.getName());
+			drawTile(canvas, letter, color, left, top, right, bottom);
+		}
+	}
+
+	private void drawTile(Canvas canvas, Bitmap bm, int dstleft, int dsttop,
+			int dstright, int dstbottom) {
+		Rect dst = new Rect(dstleft, dsttop, dstright, dstbottom);
+		canvas.drawBitmap(bm, null, dst, null);
+	}
+
+	private int getColorForName(String name) {
+		int holoColors[] = { 0xFFe91e63, 0xFF9c27b0, 0xFF673ab7, 0xFF3f51b5,
+				0xFF5677fc, 0xFF03a9f4, 0xFF00bcd4, 0xFF009688, 0xFFff5722,
+				0xFF795548, 0xFF607d8b };
+		return holoColors[(int) ((name.hashCode() & 0xffffffffl) % holoColors.length)];
+	}
+
+}