Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 30 insertions, 0 deletions

diff --git a/android/source/src/java/org/mozilla/gecko/gfx/DynamicTileLayer.java b/android/source/src/java/org/mozilla/gecko/gfx/DynamicTileLayer.java
new file mode 100644
index 000000000..ea95c032e
--- /dev/null
+++ b/android/source/src/java/org/mozilla/gecko/gfx/DynamicTileLayer.java
@@ -0,0 +1,30 @@
+package org.mozilla.gecko.gfx;
+
+import android.content.Context;
+import android.graphics.RectF;
+
+public class DynamicTileLayer extends ComposedTileLayer {
+    public DynamicTileLayer(Context context) {
+        super(context);
+    }
+
+    @Override
+    protected RectF getViewPort(ImmutableViewportMetrics viewportMetrics) {
+        RectF rect = viewportMetrics.getViewport();
+        return inflate(roundToTileSize(rect, tileSize), getInflateFactor());
+    }
+
+    @Override
+    protected float getZoom(ImmutableViewportMetrics viewportMetrics) {
+        return viewportMetrics.zoomFactor;
+    }
+
+    @Override
+    protected int getTilePriority() {
+        return 0;
+    }
+
+    private IntSize getInflateFactor() {
+        return new IntSize(tileSize.width*2, tileSize.height*4);
+    }
+}