android/source/src/java/org/mozilla/gecko/gfx/FixedZoomTileLayer.java

   1 package org.mozilla.gecko.gfx;
   2
   3 import android.content.Context;
   4 import android.graphics.RectF;
   5
   6 public class FixedZoomTileLayer extends ComposedTileLayer {
   7     public FixedZoomTileLayer(Context context) {
   8         super(context);
   9     }
  10
  11     @Override
  12     protected RectF getViewPort(ImmutableViewportMetrics viewportMetrics) {
  13         float zoom = getZoom(viewportMetrics);
  14         RectF rect = normalizeRect(viewportMetrics.getViewport(), viewportMetrics.zoomFactor, zoom);
  15         return inflate(roundToTileSize(rect, tileSize), getInflateFactor());
  16     }
  17
  18     @Override
  19     protected float getZoom(ImmutableViewportMetrics viewportMetrics) {
  20         return 1.0f / 16.0f;
  21     }
  22
  23     @Override
  24     protected int getTilePriority() {
  25         return -1;
  26     }
  27
  28     private IntSize getInflateFactor() {
  29         return new IntSize(tileSize.width, tileSize.height*6);
  30     }
  31 }