DynamicTileLayer.java

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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);
    }
}