package cc.shinichi.library.view.photoview;
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import android.view.MotionEvent;
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import android.widget.ImageView;
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class Util {
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static void checkZoomLevels(float minZoom, float midZoom, float maxZoom) {
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if (minZoom >= midZoom) {
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throw new IllegalArgumentException(
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"Minimum zoom has to be less than Medium zoom. Call setMinimumZoom() with a more appropriate value");
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} else if (midZoom >= maxZoom) {
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throw new IllegalArgumentException(
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"Medium zoom has to be less than Maximum zoom. Call setMaximumZoom() with a more appropriate value");
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}
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}
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static boolean hasDrawable(ImageView imageView) {
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return imageView.getDrawable() != null;
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}
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static boolean isSupportedScaleType(final ImageView.ScaleType scaleType) {
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if (scaleType == null) {
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return false;
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}
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switch (scaleType) {
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case MATRIX:
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throw new IllegalStateException("Matrix scale type is not supported");
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}
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return true;
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}
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static int getPointerIndex(int action) {
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return (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
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}
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}
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