package cn.sinata.xldutils.view.util
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import android.graphics.Matrix
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import android.graphics.RectF
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import android.view.MotionEvent
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interface ZoomableController {
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/**
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* Listener interface.
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*/
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interface Listener {
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/**
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* Notifies the view that the transform changed.
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* @param transform the new matrix
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*/
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fun onTransformChanged(transform: Matrix)
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}
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/**
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* Gets whether the controller is enabled. This should return the last value passed to
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* [.setEnabled].
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* @return whether the controller is enabled.
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*/
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/**
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* Enables the controller. The controller is enabled when the image has been loaded.
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* @param enabled whether to enable the controller
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*/
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var isEnabled: Boolean
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/**
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* Sets the listener for the controller to call back when the matrix changes.
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* @param listener the listener
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*/
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fun setListener(listener: Listener?)
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/**
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* Gets the current scale factor. A convenience method for calculating the scale from the
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* transform.
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* @return the current scale factor
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*/
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val scaleFactor: Float
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/**
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* Gets the current transform.
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* @return the transform
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*/
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val transform: Matrix
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/**
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* Sets the bounds of the image post transform prior to application of the zoomable
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* transformation.
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* @param imageBounds the bounds of the image
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*/
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fun setImageBounds(imageBounds: RectF)
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/**
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* Sets the bounds of the view.
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* @param viewBounds the bounds of the view
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*/
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fun setViewBounds(viewBounds: RectF)
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/**
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* Allows the controller to handle a touch event.
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* @param event the touch event
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* *
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* @return whether the controller handled the event
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*/
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fun onTouchEvent(event: MotionEvent): Boolean
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}
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