// --参数计算---------------------------------------------------------------
public void resetZoomState(ImageZoomView view, Bitmap bitmap) {
mView = view;
mBitmap = bitmap;
mAspectQuotient = -1;
do {
if (null == mView || null == mBitmap) {
break;
}
if (mView.getHeight() <= 0
|| mView.getWidth() <= 0
|| mBitmap.getHeight() <= 0
|| mBitmap.getWidth() <= 0) {
break;
}
mAspectQuotient =
(((float) mBitmap.getWidth()) / mBitmap.getHeight())
/ (((float) mView.getWidth()) / mView.getHeight());
logd("mAspectQuotient = " + mAspectQuotient);
calculateMinMaxZoom();
calculateMinMaxPanX();
calculateMinMaxPanY();
// 初始化OK，通知外部，显示小图标
setZoomChanged();
notifyObservers();
} while (false);
}
public void setZoom(float zoom) {
zoom = adjustZoom(zoom);
if (!floatEquel(zoom, mZoom)) {
mZoom = zoom;
logd("----> mZoom = " + mZoom);
calculateMinMaxPanX();
calculateMinMaxPanY();
setZoomChanged();
}
}