android: TileIdentifier - contains tile position and zoom

Change-Id: Ia82dc1f99eff5117fe16df2b61c1a7230b52e07a

android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/DynamicTileLayer.java

@@ -97,10 +97,10 @@ public class DynamicTileLayer extends Layer {
             tile.beginTransaction();
 
             Rect position = tile.getPosition();
-            float positionX = tile.x / tile.zoom;
-            float positionY = tile.y / tile.zoom;
-            float tileSizeWidth = tileSize.width / tile.zoom;
-            float tileSizeHeight = tileSize.height / tile.zoom;
+            float positionX = tile.id.x / tile.id.zoom;
+            float positionY = tile.id.y / tile.id.zoom;
+            float tileSizeWidth = tileSize.width / tile.id.zoom;
+            float tileSizeHeight = tileSize.height / tile.id.zoom;
             position.set((int) positionX, (int) positionY, (int) (positionX + tileSizeWidth + 1), (int) (positionY + tileSizeHeight + 1));
             tile.setPosition(position);
 
@@ -157,7 +157,7 @@ public class DynamicTileLayer extends Layer {
                 }
                 boolean contains = false;
                 for (SubTile tile : tiles) {
-                    if (tile.x == x && tile.y == y && tile.zoom == viewportMetrics.zoomFactor) {
+                    if (tile.id.x == x && tile.id.y == y && tile.id.zoom == viewportMetrics.zoomFactor) {
                         contains = true;
                     }
                 }
@@ -184,8 +184,8 @@ public class DynamicTileLayer extends Layer {
 
     private void markTiles(ImmutableViewportMetrics viewportMetrics) {
         for (SubTile tile : tiles) {
-            if (FloatUtils.fuzzyEquals(tile.zoom, viewportMetrics.zoomFactor)) {
-                RectF tileRect = new RectF(tile.x, tile.y, tile.x + tileSize.width, tile.y + tileSize.height);
+            if (FloatUtils.fuzzyEquals(tile.id.zoom, viewportMetrics.zoomFactor)) {
+                RectF tileRect = new RectF(tile.id.x, tile.id.y, tile.id.x + tileSize.width, tile.id.y + tileSize.height);
                 if (!RectF.intersects(currentViewport, tileRect)) {
                     tile.markForRemoval();
                 }

android/experimental/LOAndroid3/src/java/org/mozilla/gecko/gfx/SubTile.java

@@ -6,42 +6,49 @@
 package org.mozilla.gecko.gfx;
 
 public class SubTile extends SingleTileLayer {
-    public int x;
-    public int y;
-    public float zoom;
-
     public boolean markedForRemoval = false;
+    public final TileIdentifier id;
 
     public SubTile(CairoImage mImage, int x, int y, float zoom) {
         super(mImage);
-        this.x = x;
-        this.y = y;
-        this.zoom = zoom;
+        id = new TileIdentifier(x, y, zoom);
     }
 
     public void markForRemoval() {
         markedForRemoval = true;
     }
 
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
-
-        SubTile subTile = (SubTile) o;
-
-        if (x != subTile.x) return false;
-        if (y != subTile.y) return false;
-        if (Float.compare(subTile.zoom, zoom) != 0) return false;
-
-        return true;
-    }
-
-    @Override
-    public int hashCode() {
-        int result = x;
-        result = 31 * result + y;
-        result = 31 * result + (zoom != +0.0f ? Float.floatToIntBits(zoom) : 0);
-        return result;
+    public static class TileIdentifier {
+        public int x;
+        public int y;
+        public float zoom;
+
+        public TileIdentifier(int x, int y, float zoom) {
+            this.x = x;
+            this.y = y;
+            this.zoom = zoom;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+
+            TileIdentifier that = (TileIdentifier) o;
+
+            if (x != that.x) return false;
+            if (y != that.y) return false;
+            if (Float.compare(that.zoom, zoom) != 0) return false;
+
+            return true;
+        }
+
+        @Override
+        public int hashCode() {
+            int result = x;
+            result = 31 * result + y;
+            result = 31 * result + (zoom != +0.0f ? Float.floatToIntBits(zoom) : 0);
+            return result;
+        }
     }
 }