android: clear all tiles on part change (method clearAllTiles)

Change-Id: I4e18fed5167559284bc18235811cb2b1c6c62a4d

3 files changed, 11 insertions, 2 deletions

diff --git a/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java b/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
index baf12061c5a3..c6ee612ae9b4 100644
--- a/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
+++ b/android/experimental/LOAndroid3/src/java/org/libreoffice/LOKitThread.java
@@ -53,6 +53,7 @@ public class LOKitThread extends Thread {
 
     private void changePart(int partIndex) throws InterruptedException {
         mTileProvider.changePart(partIndex);
+        mLayerClient.clearAllTiles();
         refresh();
     }
 
diff --git a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/GeckoLayerClient.java b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/GeckoLayerClient.java
index e847c01c9139..28c2bbb14eb7 100644
--- a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/GeckoLayerClient.java
+++ b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/GeckoLayerClient.java
@@ -275,6 +275,10 @@ public class GeckoLayerClient implements LayerView.Listener {
         mRootLayer.reevaluateTiles(mLayerController.getViewportMetrics());
     }
 
+    public void clearAllTiles() {
+        mRootLayer.clearAllTiles();
+    }
+
     private class AdjustRunnable implements Runnable {
         public void run() {
             mPendingViewportAdjust = false;
diff --git a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/MultiTileLayer.java b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/MultiTileLayer.java
index 14a08e26a3c6..eb1ab5ca4482 100644
--- a/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/MultiTileLayer.java
+++ b/android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/MultiTileLayer.java
@@ -215,13 +215,13 @@ public class MultiTileLayer extends Layer {
 
         if (tileViewPort != newTileViewPort) {
             tileViewPort = newTileViewPort;
-            cleanTiles();
+            clearMarkedTiles();
             addNewTiles(viewportMetrics);
             markTiles(viewportMetrics);
         }
     }
 
-    private void cleanTiles() {
+    private void clearMarkedTiles() {
         List<SubTile> tilesToRemove = new ArrayList<SubTile>();
         for(SubTile tile : mTiles) {
             if (tile.markedForRemoval) {
@@ -269,5 +269,9 @@ public class MultiTileLayer extends Layer {
             }
         }
     }
+
+    public void clearAllTiles() {
+        mTiles.clear();
+    }
 }