Refactor filters parameters

- introduce FilterRepresentations
- change filters lifecycle

Change-Id: I9416fca47a334d532a347cd5577795738c870933

1 files changed, 12 insertions, 3 deletions

diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterExposure.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterExposure.java
index 63f860171..569a6f276 100644
--- a/src/com/android/gallery3d/filtershow/filters/ImageFilterExposure.java
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterExposure.java
@@ -20,12 +20,19 @@ import com.android.gallery3d.R;
 
 import android.graphics.Bitmap;
 
-public class ImageFilterExposure extends ImageFilter {
+public class ImageFilterExposure extends SimpleImageFilter {
 
     public ImageFilterExposure() {
         mName = "Exposure";
     }
 
+    public FilterRepresentation getDefaultRepresentation() {
+        FilterRepresentation representation = super.getDefaultRepresentation();
+        representation.setName("Exposure");
+        representation.setFilterClass(ImageFilterExposure.class);
+        return representation;
+    }
+
     @Override
     public int getButtonId() {
         return R.id.exposureButton;
@@ -40,10 +47,12 @@ public class ImageFilterExposure extends ImageFilter {
 
     @Override
     public Bitmap apply(Bitmap bitmap, float scaleFactor, boolean highQuality) {
+        if (getParameters() == null) {
+            return bitmap;
+        }
         int w = bitmap.getWidth();
         int h = bitmap.getHeight();
-        int p = mParameter;
-        float value = p;
+        float value = getParameters().getValue();
         nativeApplyFilter(bitmap, w, h, value);
         return bitmap;
     }