Make the keyboard transparent (#252)

* Add option for keyboard opacity (transparency). Keyboard background, keys and pressed keys can be adjusted separately.

* Make the borders transparent as well

* Moved setAlphas outside drawKeyFrame to top of onDraw method

2 files changed, 13 insertions, 4 deletions

diff --git a/srcs/juloo.keyboard2/Config.java b/srcs/juloo.keyboard2/Config.java
index 0ef5b67..c289436 100644
--- a/srcs/juloo.keyboard2/Config.java
+++ b/srcs/juloo.keyboard2/Config.java
@@ -1,6 +1,5 @@
 package juloo.keyboard2;
 
-import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.content.res.Resources;
@@ -9,7 +8,6 @@ import android.util.DisplayMetrics;
 import android.util.TypedValue;
 import android.view.KeyEvent;
 import java.util.HashSet;
-import java.util.Iterator;
 import java.util.Set;
 
 final class Config
@@ -40,6 +38,9 @@ final class Config
   public float keyVerticalInterval;
   public float keyHorizontalInterval;
   public int labelBrightness; // 0 - 255
+  public int keyboardOpacity; // 0 - 255
+  public int keyOpacity; // 0 - 255
+  public int keyActivatedOpacity; // 0 - 255
   public boolean preciseRepeat;
   public boolean double_tap_lock_shift;
   public float characterSize; // Ratio
@@ -141,6 +142,10 @@ final class Config
       * horizontalIntervalScale;
     // Label brightness is used as the alpha channel
     labelBrightness = _prefs.getInt("label_brightness", 100) * 255 / 100;
+    // Keyboard opacity
+    keyboardOpacity = _prefs.getInt("keyboard_opacity", 100) * 255 / 100;
+    keyOpacity = _prefs.getInt("key_opacity", 100) * 255 / 100;
+    keyActivatedOpacity = _prefs.getInt("key_activated_opacity", 100) * 255 / 100;
     // Do not substract keyVerticalInterval from keyHeight because this is done
     // during rendered.
     keyHeight = dm.heightPixels * keyboardHeightPercent / 100 / 4;
diff --git a/srcs/juloo.keyboard2/Keyboard2View.java b/srcs/juloo.keyboard2/Keyboard2View.java
index ce6c9f4..c3271b9 100644
--- a/srcs/juloo.keyboard2/Keyboard2View.java
+++ b/srcs/juloo.keyboard2/Keyboard2View.java
@@ -3,7 +3,6 @@ package juloo.keyboard2;
 import android.content.Context;
 import android.content.ContextWrapper;
 import android.graphics.Canvas;
-import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Rect;
 import android.graphics.RectF;
@@ -12,7 +11,6 @@ import android.os.Build.VERSION;
 import android.util.AttributeSet;
 import android.util.DisplayMetrics;
 import android.view.HapticFeedbackConstants;
-import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.Window;
@@ -258,6 +256,12 @@ public class Keyboard2View extends View
   protected void onDraw(Canvas canvas)
   {
     updateFlags();
+    // Set keyboard background opacity
+    getBackground().setAlpha(_config.keyboardOpacity);
+    // Set keys opacity
+    _theme.keyBgPaint.setAlpha(_config.keyOpacity);
+    _theme.keyDownBgPaint.setAlpha(_config.keyActivatedOpacity);
+    _theme.keyBorderPaint.setAlpha(_config.keyOpacity);
     float y = _config.marginTop + _config.keyVerticalInterval / 2;
     for (KeyboardData.Row row : _keyboard.rows)
     {