Java tutorial
/* * This is the source code of Telegram for Android v. 3.x.x. * It is licensed under GNU GPL v. 2 or later. * You should have received a copy of the license in this archive (see LICENSE). * * Copyright Nikolai Kudashov, 2013-2016. */ package org.telegram.ui.Cells; import android.content.Context; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.os.Build; import android.support.v4.content.ContextCompat; import android.text.Layout; import android.text.StaticLayout; import android.text.TextPaint; import android.text.TextUtils; import android.util.TypedValue; import android.view.Gravity; import android.view.MotionEvent; import android.view.View; import android.widget.FrameLayout; import android.widget.TextView; import org.telegram.messenger.AndroidUtilities; import org.telegram.messenger.ContactsController; import org.telegram.messenger.MessagesController; import org.telegram.messenger.R; import org.telegram.tgnet.TLRPC; import org.telegram.ui.Components.AvatarDrawable; import org.telegram.ui.Components.BackupImageView; import org.telegram.ui.Components.LayoutHelper; public class HintDialogCell extends FrameLayout { private BackupImageView imageView; private TextView nameTextView; private AvatarDrawable avatarDrawable = new AvatarDrawable(); private static Drawable countDrawable; private static Drawable countDrawableGrey; private static TextPaint countPaint; private int lastUnreadCount; private int countWidth; private StaticLayout countLayout; private long dialog_id; public HintDialogCell(Context context) { super(context); setBackgroundResource(R.drawable.list_selector); imageView = new BackupImageView(context); imageView.setRoundRadius(AndroidUtilities.dp(27)); addView(imageView, LayoutHelper.createFrame(54, 54, Gravity.TOP | Gravity.CENTER_HORIZONTAL, 0, 7, 0, 0)); nameTextView = new TextView(context); nameTextView.setTextColor(ContextCompat.getColor(context, R.color.primary_text)); nameTextView.setTextSize(TypedValue.COMPLEX_UNIT_DIP, 12); nameTextView.setMaxLines(2); nameTextView.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL); nameTextView.setLines(2); nameTextView.setEllipsize(TextUtils.TruncateAt.END); addView(nameTextView, LayoutHelper.createFrame(LayoutHelper.MATCH_PARENT, LayoutHelper.WRAP_CONTENT, Gravity.LEFT | Gravity.TOP, 6, 64, 6, 0)); if (countDrawable == null) { countDrawable = getResources().getDrawable(R.drawable.dialogs_badge); countDrawableGrey = getResources().getDrawable(R.drawable.dialogs_badge2); countPaint = new TextPaint(TextPaint.ANTI_ALIAS_FLAG); countPaint.setColor(0xffffffff); countPaint.setTypeface(AndroidUtilities.getTypeface("fonts/rmedium.ttf")); } countPaint.setTextSize(AndroidUtilities.dp(13)); } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(AndroidUtilities.dp(100), MeasureSpec.EXACTLY)); } @Override public boolean onTouchEvent(MotionEvent event) { if (Build.VERSION.SDK_INT >= 21 && getBackground() != null) { if (event.getAction() == MotionEvent.ACTION_DOWN || event.getAction() == MotionEvent.ACTION_MOVE) { getBackground().setHotspot(event.getX(), event.getY()); } } return super.onTouchEvent(event); } public void checkUnreadCounter(int mask) { if (mask != 0 && (mask & MessagesController.UPDATE_MASK_READ_DIALOG_MESSAGE) == 0 && (mask & MessagesController.UPDATE_MASK_NEW_MESSAGE) == 0) { return; } TLRPC.TL_dialog dialog = MessagesController.getInstance().dialogs_dict.get(dialog_id); if (dialog != null && dialog.unread_count != 0) { if (lastUnreadCount != dialog.unread_count) { lastUnreadCount = dialog.unread_count; String countString = String.format("%d", dialog.unread_count); countWidth = Math.max(AndroidUtilities.dp(12), (int) Math.ceil(countPaint.measureText(countString))); countLayout = new StaticLayout(countString, countPaint, countWidth, Layout.Alignment.ALIGN_CENTER, 1.0f, 0.0f, false); if (mask != 0) { invalidate(); } } } else if (countLayout != null) { if (mask != 0) { invalidate(); } lastUnreadCount = 0; countLayout = null; } } public void setDialog(int uid, boolean counter, CharSequence name) { dialog_id = uid; TLRPC.FileLocation photo = null; if (uid > 0) { TLRPC.User user = MessagesController.getInstance().getUser(uid); if (name != null) { nameTextView.setText(name); } else if (user != null) { nameTextView.setText(ContactsController.formatName(user.first_name, user.last_name)); } else { nameTextView.setText(""); } avatarDrawable.setInfo(user); if (user != null && user.photo != null) { photo = user.photo.photo_small; } } else { TLRPC.Chat chat = MessagesController.getInstance().getChat(-uid); if (name != null) { nameTextView.setText(name); } else if (chat != null) { nameTextView.setText(chat.title); } else { nameTextView.setText(""); } avatarDrawable.setInfo(chat); if (chat != null && chat.photo != null) { photo = chat.photo.photo_small; } } imageView.setImage(photo, "50_50", avatarDrawable); if (counter) { checkUnreadCounter(0); } else { countLayout = null; } } @Override protected boolean drawChild(Canvas canvas, View child, long drawingTime) { boolean result = super.drawChild(canvas, child, drawingTime); if (child == imageView) { if (countLayout != null) { int top = AndroidUtilities.dp(6); int left = AndroidUtilities.dp(54); int x = left - AndroidUtilities.dp(5.5f); if (MessagesController.getInstance().isDialogMuted(dialog_id)) { countDrawableGrey.setBounds(x, top, x + countWidth + AndroidUtilities.dp(11), top + countDrawableGrey.getIntrinsicHeight()); countDrawableGrey.draw(canvas); } else { countDrawable.setBounds(x, top, x + countWidth + AndroidUtilities.dp(11), top + countDrawable.getIntrinsicHeight()); countDrawable.draw(canvas); } canvas.save(); canvas.translate(left, top + AndroidUtilities.dp(4)); countLayout.draw(canvas); canvas.restore(); } } return result; } }