android: destroy tiles (free the bitmap) when they are removed

Change-Id: I55959c115467f98d43d471c280bb3a0248b669ec

2 files changed, 12 insertions, 0 deletions

diff --git a/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java b/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
index 25a1705d06c1..d11c4c9db390 100644
--- a/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
+++ b/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
@@ -83,6 +83,7 @@ public class LOKitThread extends Thread {
             Rect tileRect = new Rect(tile.x, tile.y, tile.x + TILE_SIZE, tile.y + TILE_SIZE);
             if (!Rect.intersects(rect, tileRect)) {
                 Log.i(LOGTAG, "tilerender delete " + tileRect);
+                tile.destroy();
                 removeTiles.add(tile);
             }
         }
diff --git a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/TileLayer.java b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/TileLayer.java
index 4f7ff9df941b..b7ba36acba98 100644
--- a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/TileLayer.java
+++ b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/TileLayer.java
@@ -7,6 +7,7 @@ package org.mozilla.gecko.gfx;
 
 import android.graphics.Rect;
 import android.opengl.GLES20;
+import android.util.Log;
 
 import java.nio.ByteBuffer;
 
@@ -50,6 +51,16 @@ public abstract class TileLayer extends Layer {
         }
     }
 
+    public void destroy() {
+        try {
+            if (mImage != null) {
+                mImage.destroy();
+            }
+        } catch (Exception ex) {
+            Log.e(LOGTAG, "error clearing buffers: ", ex);
+        }
+    }
+
     public void setPaintMode(PaintMode mode) {
         mPaintMode = mode;
     }