1 files changed, 158 insertions, 0 deletions
diff --git a/src/main/java/de/thedevstack/conversationsplus/services/avatar/AvatarBitmapUtil.java b/src/main/java/de/thedevstack/conversationsplus/services/avatar/AvatarBitmapUtil.java
new file mode 100644
index 00000000..9d1546aa
--- /dev/null
+++ b/src/main/java/de/thedevstack/conversationsplus/services/avatar/AvatarBitmapUtil.java
@@ -0,0 +1,158 @@
+package de.thedevstack.conversationsplus.services.avatar;
+
+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 java.util.List;
+import java.util.Locale;
+
+import de.thedevstack.conversationsplus.entities.Account;
+import de.thedevstack.conversationsplus.entities.Contact;
+import de.thedevstack.conversationsplus.entities.MucOptions;
+import de.thedevstack.conversationsplus.utils.AvatarUtil;
+import de.thedevstack.conversationsplus.utils.ImageUtil;
+import de.thedevstack.conversationsplus.utils.UIHelper;
+
+/**
+ */
+public final class AvatarBitmapUtil {
+
+    private static final int FG_COLOR = 0xFFFAFAFA;
+    private static final int TRANSPARENT = 0x00000000;
+    private static final int PLACEHOLDER_COLOR = 0xFF202020;
+
+    public static Bitmap createAvatarBitmap(String name, int size) {
+        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
+        Canvas canvas = new Canvas(bitmap);
+        drawTile(canvas, name, 0, 0, size, size);
+        return bitmap;
+    }
+
+    public static Bitmap createAvatarBitmap(MucOptions mucOptions, int size) {
+        final List<MucOptions.User> users = mucOptions.getUsers();
+        int count = users.size();
+        Bitmap 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();
+            drawTile(canvas, name, 0, 0, size, size);
+        } else if (count == 1) {
+            drawTile(canvas, users.get(0), 0, 0, size / 2 - 1, size);
+            drawTile(canvas, mucOptions.getConversation().getAccount(), size / 2 + 1, 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", PLACEHOLDER_COLOR, size / 2 + 1, size / 2 + 1,
+                    size, size);
+        }
+
+        return bitmap;
+    }
+
+    private static boolean 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);
+        return true;
+    }
+
+    private static boolean 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.getProfilePhoto() != null) {
+                uri = Uri.parse(contact.getProfilePhoto());
+            } else if (contact.getAvatar() != null) {
+                uri = AvatarUtil.getAvatarUri(contact.getAvatar());
+            }
+            if (drawTile(canvas, uri, left, top, right, bottom)) {
+                return true;
+            }
+        } else if (user.getAvatar() != null) {
+            Uri uri = AvatarUtil.getAvatarUri(user.getAvatar());
+            if (drawTile(canvas, uri, left, top, right, bottom)) {
+                return true;
+            }
+        }
+        String name = contact != null ? contact.getDisplayName() : user.getName();
+        drawTile(canvas, name, left, top, right, bottom);
+        return true;
+    }
+
+    private static boolean drawTile(Canvas canvas, Account account, int left, int top, int right, int bottom) {
+        String avatar = account.getAvatar();
+        if (avatar != null) {
+            Uri uri = AvatarUtil.getAvatarUri(avatar);
+            if (uri != null) {
+                if (drawTile(canvas, uri, left, top, right, bottom)) {
+                    return true;
+                }
+            }
+        }
+        return drawTile(canvas, account.getJid().toBareJid().toString(), left, top, right, bottom);
+    }
+
+    private static boolean drawTile(Canvas canvas, String name, int left, int top, int right, int bottom) {
+        if (name != null) {
+            String trimmedName = name.trim();
+            final String letter = trimmedName.isEmpty() ? "X" : trimmedName.substring(0, 1);
+            final int color = UIHelper.getColorForName(name);
+            drawTile(canvas, letter, color, left, top, right, bottom);
+            return true;
+        }
+        return false;
+    }
+
+    private static boolean drawTile(Canvas canvas, Uri uri, int left, int top, int right, int bottom) {
+        if (uri != null) {
+            Bitmap bitmap = ImageUtil.cropCenter(uri, bottom - top, right - left);
+            if (bitmap != null) {
+                drawTile(canvas, bitmap, left, top, right, bottom);
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static boolean 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);
+        return true;
+    }
+}