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2014/10/16 ¤W¤È 08:22:56
android Programming Glossary: rightbottom.yhttp://stackoverflow.com/questions/16182120/custom-android-image-crop canvas.drawRect leftTop.x leftTop.y rightBottom.x rightBottom.y paint @Override public boolean onTouchEvent MotionEvent event.. buffer x rightBottom.x buffer y leftTop.y buffer y rightBottom.y buffer true false private boolean isInImageRange PointF point.. if isInImageRange new PointF rightBottom.x movement rightBottom.y movement rightBottom.set rightBottom.x movement rightBottom.y..
http://stackoverflow.com/questions/16182120/custom-android-image-crop Canvas canvas super.onDraw canvas if leftTop.equals 0 0 resetPoints canvas.drawRect leftTop.x leftTop.y rightBottom.x rightBottom.y paint @Override public boolean onTouchEvent MotionEvent event int eventaction event.getAction switch eventaction case MotionEvent.ACTION_DOWN.. float x float y int buffer 10 return x leftTop.x buffer x rightBottom.x buffer y leftTop.y buffer y rightBottom.y buffer true false private boolean isInImageRange PointF point Get image matrix values and place them in an array float f.. leftTop.y movement break case RIGHT movement x rightBottom.x if isInImageRange new PointF rightBottom.x movement rightBottom.y movement rightBottom.set rightBottom.x movement rightBottom.y movement break case BOTTOM movement y rightBottom.y if..
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