package lecho.lib.hellocharts.animation; import lecho.lib.hellocharts.model.Viewport; public interface ChartViewportAnimator { public static final int FAST_ANIMATION_DURATION = 300; public void startAnimation(Viewport startViewport, Viewport targetViewport); public void startAnimation(Viewport startViewport, Viewport targetViewport, long duration); public void cancelAnimation(); public boolean isAnimationStarted(); public void setChartAnimationListener(ChartAnimationListener animationListener); }