Display Settings: Better font size control

Use a SeekBar instead of a list/spinner to determine the font scaling.
For consistency, an approximate size (small, normal, etc.)
 and the exact percentage are displayed.
Show a preview of the selected font size immediately

Ported from CM 10.2, squashed commits 46678 and 49167.
Credit to Veeti Paaananen for the latter commit.

Change-Id: I754d7fdcaf27c23dfccf9d56291956e70b23f63e

1 files changed, 54 insertions, 0 deletions

diff --git a/res/layout/preference_dialog_fontsize.xml b/res/layout/preference_dialog_fontsize.xml
new file mode 100644
index 0000000..f209d46
--- /dev/null
+++ b/res/layout/preference_dialog_fontsize.xml
@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2008 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:settings="http://schemas.android.com/apk/res/com.android.settings"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="12dp">
+
+        <!-- Static height enough to accommodate the text views in their biggest possible size,
+        without having the dialog resize itself at any point. -->
+        <LinearLayout android:id="@+id/container"
+                 android:orientation="vertical"
+                 android:layout_width="match_parent"
+                 android:layout_height="64dp"
+                 android:gravity="center_horizontal|center_vertical">
+
+                <TextView android:id="@+id/description"
+                        android:text="@string/font_size_sample"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textAppearance="?android:textAppearanceLarge" />
+
+                <TextView android:id="@+id/percentage"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:textAppearance="?android:textAppearanceSmall" />
+
+        </LinearLayout>
+
+        <com.android.settings.IntervalSeekBar android:id="@+id/font_size"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:padding="8dp"
+                android:layout_below="@+id/container"
+                settings:min="0.85"
+                settings:max="1.30"
+                settings:defaultValue="1.00"
+                settings:digits="2" />
+
+</RelativeLayout>