The Tor Browser / file comparison
comparison: mobile/android/base/home/TabMenuStrip.java
mobile/android/base/home/TabMenuStrip.java
- branch
- TOR_BUG_3246
- changeset 4
- fc2d59ddac77
equal
deleted
inserted
replaced
| -1:000000000000 | 0:d3a3bb8e8a8d |
|---|---|
| 1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: nil; -*- | |
| 2 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 package org.mozilla.gecko.home; | |
| 7 | |
| 8 import org.mozilla.gecko.R; | |
| 9 | |
| 10 import android.content.Context; | |
| 11 import android.content.res.TypedArray; | |
| 12 import android.graphics.Canvas; | |
| 13 import android.graphics.drawable.Drawable; | |
| 14 import android.util.AttributeSet; | |
| 15 import android.view.LayoutInflater; | |
| 16 import android.view.View; | |
| 17 import android.view.ViewTreeObserver; | |
| 18 import android.view.accessibility.AccessibilityEvent; | |
| 19 import android.widget.HorizontalScrollView; | |
| 20 import android.widget.LinearLayout; | |
| 21 import android.widget.TextView; | |
| 22 | |
| 23 /** | |
| 24 * {@code TabMenuStrip} is the view used to display {@code HomePager} tabs | |
| 25 * on tablets. See {@code TabMenuStripLayout} for details about how the | |
| 26 * tabs are created and updated. | |
| 27 */ | |
| 28 public class TabMenuStrip extends HorizontalScrollView | |
| 29 implements HomePager.Decor { | |
| 30 | |
| 31 // Offset between the selected tab title and the edge of the screen, | |
| 32 // except for the first and last tab in the tab strip. | |
| 33 private static final int TITLE_OFFSET_DIPS = 24; | |
| 34 | |
| 35 private final int titleOffset; | |
| 36 private final TabMenuStripLayout layout; | |
| 37 | |
| 38 public TabMenuStrip(Context context, AttributeSet attrs) { | |
| 39 super(context, attrs); | |
| 40 | |
| 41 // Disable the scroll bar. | |
| 42 setHorizontalScrollBarEnabled(false); | |
| 43 | |
| 44 titleOffset = (int) (TITLE_OFFSET_DIPS * getResources().getDisplayMetrics().density); | |
| 45 | |
| 46 layout = new TabMenuStripLayout(context, attrs); | |
| 47 addView(layout, LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT); | |
| 48 } | |
| 49 | |
| 50 @Override | |
| 51 public void onAddPagerView(String title) { | |
| 52 layout.onAddPagerView(title); | |
| 53 } | |
| 54 | |
| 55 @Override | |
| 56 public void removeAllPagerViews() { | |
| 57 layout.removeAllViews(); | |
| 58 } | |
| 59 | |
| 60 @Override | |
| 61 public void onPageSelected(final int position) { | |
| 62 layout.onPageSelected(position); | |
| 63 } | |
| 64 | |
| 65 @Override | |
| 66 public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { | |
| 67 layout.onPageScrolled(position, positionOffset, positionOffsetPixels); | |
| 68 | |
| 69 final View selectedTitle = layout.getChildAt(position); | |
| 70 if (selectedTitle == null) { | |
| 71 return; | |
| 72 } | |
| 73 | |
| 74 final int selectedTitleOffset = (int) (positionOffset * selectedTitle.getWidth()); | |
| 75 | |
| 76 int titleLeft = selectedTitle.getLeft() + selectedTitleOffset; | |
| 77 if (position > 0) { | |
| 78 titleLeft -= titleOffset; | |
| 79 } | |
| 80 | |
| 81 int titleRight = selectedTitle.getRight() + selectedTitleOffset; | |
| 82 if (position < layout.getChildCount() - 1) { | |
| 83 titleRight += titleOffset; | |
| 84 } | |
| 85 | |
| 86 final int scrollX = getScrollX(); | |
| 87 if (titleLeft < scrollX) { | |
| 88 // Tab strip overflows to the left. | |
| 89 scrollTo(titleLeft, 0); | |
| 90 } else if (titleRight > scrollX + getWidth()) { | |
| 91 // Tab strip overflows to the right. | |
| 92 scrollTo(titleRight - getWidth(), 0); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 @Override | |
| 97 public void setOnTitleClickListener(HomePager.OnTitleClickListener onTitleClickListener) { | |
| 98 layout.setOnTitleClickListener(onTitleClickListener); | |
| 99 } | |
| 100 } |
