android - Moving hotspots i.e View over scaled & panned Image. -

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i have been working on panning image in container using touchimageview. trying achieve want translate other view respect amount of panning i.e translation made.

below action_move event when user makes pan event.

                 case motionevent.action_move:                     if (state == state.drag) {                         float deltax = curr.x - last.x;                         float deltay = curr.y - last.y;                         float fixtransx = getfixdragtrans(deltax, viewwidth, getimagewidth());                         float fixtransy = getfixdragtrans(deltay, viewheight, getimageheight());                           matrix.posttranslate(fixtransx, fixtransy);                         fixtrans();                          // function callbacks.                          // want restrict callback if translation values matrix 0 after scaling / zooming                         // still gives values > 0 if trying pan.                         moveviewswithsamedistance(fixtransx, fixtransy);                          last.set(curr.x, curr.y);                     }                     break;

the issue facing works while translating tags on panned image. when image has reached bounds still translationx or translationy values greater/less 0 makes tags move out of bound. there way can restrict translation.? have tried matrix method. still translation values above 0 after reach bounds when image scaled.


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