Adjust wallpaper picker to match static wallpaper picker

- Implement new action bar
- Use BottomSheet behavior from design lib
- Fill in values from live wallpaper if desired
- Don't use separate dialog for loading state

Bug: 28770685
Change-Id: I8dd862fe4c83f702e249f7f3644df89fee771f4f

4 files changed, 39 insertions, 18 deletions

diff --git a/res/values/colors.xml b/res/values/colors.xml
index d49e104..a81efb6 100644
--- a/res/values/colors.xml
+++ b/res/values/colors.xml
@@ -20,5 +20,7 @@
 <resources>
     <color name="live_wallpaper_thumbnail_background">#CC666666</color>
     <color name="live_wallpaper_thumbnail_text_color">#FFFFFFFF</color>
+
+    <color name="translucent_black">#96000000</color>
 </resources>
 
diff --git a/res/values/dimensions.xml b/res/values/dimensions.xml
index d08e573..73792df 100644
--- a/res/values/dimensions.xml
+++ b/res/values/dimensions.xml
@@ -25,4 +25,19 @@
 
     <dimen name="screen_margin_sides">0dip</dimen>
 
+    <!-- Dimensions for the preview fragment. -->
+    <dimen name="preview_toolbar_up_button_padding">0dp</dimen>
+    <dimen name="preview_toolbar_set_wallpaper_button_end_padding">12dp</dimen>
+
+    <!-- Dimensions for the preview attribution pane. -->
+    <dimen name="preview_attribution_pane_collapsed_height">48dp</dimen>
+    <dimen name="preview_attribution_pane_expanded_height">96dp</dimen>
+    <dimen name="preview_attribution_pane_content_side_margin">16dp</dimen>
+    <dimen name="preview_attribution_pane_title_top_margin">13dp</dimen>
+    <dimen name="preview_attribution_pane_subtitle1_top_margin">12dp</dimen>
+    <dimen name="preview_attribution_pane_subtitle2_top_margin">2dp</dimen>
+    <dimen name="preview_attribution_pane_explore_left_margin">2dp</dimen>
+    <dimen name="preview_attribution_pane_explore_top_margin">12dp</dimen>
+    <dimen name="preview_attribution_pane_explore_bottom_margin">16dp</dimen>
+    <dimen name="preview_attribution_pane_spacer_height">32dp</dimen>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 3e9ac84..99e48e6 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -46,4 +46,12 @@
     <string name="which_wallpaper_option_home_screen">Home screen</string>
     <!-- Option for setting the wallpaper on both the home screen and lock screen. -->
     <string name="which_wallpaper_option_home_screen_and_lock_screen">Home screen and lock screen</string>
+
+    <!-- Content description for a button letting the user collapse a visual panel showing info
+         about the wallpaper being previewed. [CHAR LIMIT=none] -->
+    <string name="collapse_attribution_panel">Collapse wallpaper info panel</string>
+
+    <!-- Content description for a button letting the user expand a visual panel showing info about
+         the wallpaper being previewed. [CHAR LIMIT=none] -->
+    <string name="expand_attribution_panel">Expand wallpaper info panel</string>
 </resources>
diff --git a/res/values/styles.xml b/res/values/styles.xml
index 01747e7..361d824 100644
--- a/res/values/styles.xml
+++ b/res/values/styles.xml
@@ -21,28 +21,24 @@
 
     <style name="LivePickerTheme" parent="@android:style/Theme.DeviceDefault.Settings" />
 
-    <style name="Preview" parent="@android:style/Theme.DeviceDefault">
-        <item name="android:actionBarStyle">@style/PreviewActionBar</item>
-        <item name="android:windowAnimationStyle">@android:style/Animation.Activity</item>
-        <item name="android:windowFullscreen">true</item>
-        <item name="android:windowActionBarOverlay">true</item>
-        <item name="android:windowTranslucentNavigation">true</item>
+    <style name="Preview" parent="@style/Theme.AppCompat">
+
+        <!-- Set no title and no action bar because we use a toolbar instead. -->
+        <item name="android:windowActionBar">false</item>
+        <item name="android:windowNoTitle">true</item>
         <item name="android:windowBackground">@android:color/transparent</item>
-        <item name="android:colorBackgroundCacheHint">@null</item>
-    </style>
+        <item name="android:windowContentOverlay">@null</item>
 
-    <style name="PreviewActionBar" parent="@android:style/Widget.DeviceDefault.ActionBar">
-        <item name="android:displayOptions">showCustom</item>
-        <item name="android:background">#88000000</item>
-        <item name="android:contentInsetEnd">0dp</item>
-        <item name="android:contentInsetLeft">0dp</item>
-        <item name="android:contentInsetRight">0dp</item>
-        <item name="android:contentInsetStart">0dp</item>
+        <!-- Set status bar and navigation buttons to be translucent. -->
+        <item name="android:colorPrimaryDark">@color/translucent_black</item>
+        <item name="android:navigationBarColor">@color/translucent_black</item>
     </style>
 
-    <style name="ActionBarSetWallpaperStyle" parent="@android:style/Widget.DeviceDefault.ActionButton">
-        <item name="android:textColor">#ffffffff</item>
-        <item name="android:background">?android:attr/selectableItemBackgroundBorderless</item>
+    <style name="TranslucentToolbarStyle" parent="@style/Widget.AppCompat.Toolbar">
+        <item name="android:background">@color/translucent_black</item>
+        <item name="android:theme">@style/ThemeOverlay.AppCompat.Dark.ActionBar</item>
     </style>
 
+    <style name="AttributionPaneTitle" parent="@android:style/TextAppearance.Material.Subhead"/>
+
 </resources>
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