我必须做一个项目，我有一个图像（如地板架构），我可以在这个图像上绘制矩形。
我设法绘制图像，缩放和拖动。 我设法在这个图像上绘制矩形并使用相同的图像比例进行缩放。
所以我的主要问题是如何用图像移动那些矩形。不使用矩阵。
我使用图像的中心作为几何地标，它可能是错误的。
感谢您的帮助。
MyAcitvity
public class ZoneActivity extends Activity implements OnItemSelectedListener, OnSeekBarChangeListener {
private TextView tv;
private View cadre;
ArrayList<RiskyZone> listRz;
private FloorImageView floorImage;
private final FloorMapper floormapper;
private Menu menu;
private SubMenu editRiskyZone;
private SubMenu editWard;
private SeekBar zoomBar;
public ZoneActivity(FloorMapper floormapper){
this.floormapper=floormapper;
}
public ZoneActivity(){
this.floormapper=new FloorMapper();
this.floormapper.addFloor(new Floor("floor0"));
this.floormapper.addFloor(new Floor("floor1"));
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Spinner s = (Spinner) findViewById(R.id.zone_spinner);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_item, floormapper.getFloorNames());
s.setAdapter(adapter);
s.setOnItemSelectedListener(this);
this.tv = (TextView) findViewById(R.id.testID);
this.tv.setText("TEST2");
this.tv.setTextColor(Color.rgb(200,0,0));
listRz = new ArrayList<RiskyZone>();
RiskyZone rz1 = new RiskyZone(Color.RED, 1, "toto");
//rz1.addRectangle(new ZoneRectangle(new Coordinates(10, 40), new Coordinates(50, 50)));
rz1.addRectangle(new ZoneRectangle(new Coordinates(30, 50), new Coordinates(100, 100)));
RiskyZone rz2 = new RiskyZone(Color.BLUE, 2, "tata");
rz2.addRectangle(new ZoneRectangle(new Coordinates(0, 0), new Coordinates(50, 60)));
listRz.add(rz1);
listRz.add(rz2);
this.floorImage = (FloorImageView) findViewById(R.id.zone_image);
this.floorImage.setRiskyZones(listRz);
//savoir la taille de l'image charge
ViewTreeObserver vto = floorImage.getViewTreeObserver();
vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
public boolean onPreDraw() {
int finalHeight = floorImage.getMeasuredHeight();
int finalWidth = floorImage.getMeasuredWidth();
//tv.setText("Height: " + finalHeight + " Width: " + finalWidth);
return true;
}
});
this.zoomBar = (SeekBar) findViewById(R.id.zoomBar);
this.zoomBar.setOnSeekBarChangeListener(this);
}
/**
* permet de changer de menu lorsque l'on change de floor
* permet d'afficher que les zone a risque presente sur l'etage en cours de visu
*/
private void onChangeFloorChangeMenu(){
if(editRiskyZone != null){
editRiskyZone.clear();
Floor floor = floormapper.getFloorByName(tv.getText().toString());
// add menu items to the submenu
for (RiskyZone rz : listRz) {
//voir a ajoute une couleur sur chaque ligne
editRiskyZone.add(R.string.edit_risky_zone, rz.getId(), Menu.NONE, rz.getName());
}
editWard.clear();
//TODO:Ajouter les ward de l'etage dans le menu
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
//Creation des menus de base
editRiskyZone = menu.addSubMenu(R.string.edit_risky_zone);
editWard = menu.addSubMenu(R.string.edit_ward);
return true;
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
String floorName = (String)parent.getItemAtPosition(pos);
this.tv.setText((CharSequence) parent.getItemAtPosition(pos));
int resId = getResources().getIdentifier(floorName, "drawable", getPackageName());
this.floorImage.setImageResource(resId);
onChangeFloorChangeMenu();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// Another interface callback
}
@Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
this.floorImage.setZoom(progress);
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
我的自定义ImageView
public class FloorImageView extends ImageView implements OnTouchListener {
private Drawable image;
ImageButton img,img1;
private int zoomControler;
private int oldZoomControler;
private ArrayList<RiskyZone> riskyZones = new ArrayList<RiskyZone>();
PointF last = new PointF();
PointF start = new PointF();
private float translateX;
private float translateY;
private int left;
private int top;
private int right;
private int bottom;
public FloorImageView(Context context, AttributeSet attrset){
super(context, attrset);
image = context.getResources().getDrawable(R.drawable.floor0);
setFocusable(true);
setOnTouchListener(this);
}
public ArrayList<RiskyZone> getRiskyZones() {
return riskyZones;
}
public void setRiskyZones(ArrayList<RiskyZone> riskyZones) {
this.riskyZones = riskyZones;
}
public void drawZoneRectangles(Canvas canvas, ArrayList<Integer> riskyZoneFilters){
for(RiskyZone r : riskyZones){
canvas.save();
ArrayList<ZoneRectangle> rectangles = (ArrayList<ZoneRectangle>) r.getRectangles();
Paint paint = new Paint();
paint.setAlpha(80);
paint.setColor(r.getColor());
for(ZoneRectangle rect : rectangles){
float ratioX = (float)((right+oldZoomControler)-(left-oldZoomControler))/(float)((right+(getWidth()/2))-(left-(getWidth()/2)));
float ratioY = (float)((bottom+oldZoomControler)-(top-oldZoomControler))/(float)((bottom+(getWidth()/2))-(top-(getWidth()/2)));
float xDistance = (rect.getCooSE().getX()-rect.getCooNW().getX());
float yDistance = (rect.getCooSE().getY()-rect.getCooNW().getY());
System.out.println("xDistance = " + xDistance + " ::: yDistance = " + yDistance);
float xCenter = (rect.getCooNW().getX() + (xDistance/2)) + this.left - (rect.getCooNW().getX() + this.left);
float yCenter = (rect.getCooNW().getY() + (yDistance/2)) + this.bottom - (rect.getCooNW().getY() + this.bottom);
System.out.println("xCenter = " + xCenter + " yCenter = " + yCenter);
canvas.drawRect(xCenter-((xDistance/2)*ratioX), yCenter-((yDistance/2)*ratioY),
xCenter+((xDistance/2)*ratioX), yCenter+((yDistance/2)*ratioY) , paint);
}
canvas.restore();
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(0xff000000);
image.setBounds(left-zoomControler, top-zoomControler, right+zoomControler, bottom+zoomControler);
image.draw(canvas);
drawZoneRectangles(canvas, new ArrayList<Integer>());
}
public void setZoom(int zoom){
System.out.println(zoom);
this.oldZoomControler = this.zoomControler;
this.zoomControler = (getWidth()/2) + (zoom*10);
invalidate();
}
@Override
public void setImageResource(int resId) {
super.setImageResource(resId);
this.image = getResources().getDrawable(resId);
this.zoomControler = getWidth()/2;
this.left = (getWidth()/2);
this.top = (getHeight()/2);
this.right = (getWidth()/2);
this.bottom = (getHeight()/2);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
PointF curr = new PointF(event.getX(), event.getY());
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
last.set(curr);
start.set(last);
break;
case MotionEvent.ACTION_MOVE:
float deltaX = curr.x - last.x;
float deltaY = curr.y - last.y;
translateX = deltaX;
translateY = deltaY;
this.left = this.left + (int) deltaX;
this.top = this.top + (int) deltaY;
this.right = this.right + (int) deltaX;
this.bottom = this.bottom + (int) deltaY;
last.set(curr.x, curr.y);
break;
case MotionEvent.ACTION_UP:
break;
case MotionEvent.ACTION_POINTER_UP:
break;
}
invalidate();
return true;
}
}
XML活动
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
xmlns:app="fr.umlv.assistoid.zoning"
android:layout_height="fill_parent"
android:background="#000000"
android:layout_centerHorizontal="true"
android:orientation="vertical" >
<Spinner
android:id="@+id/zone_spinner"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF"/>
<TextView
android:id="@+id/testID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="floor0"
android:textAppearance="?android:attr/textAppearanceMedium" />
<fr.umlv.assistoid.zoning.FloorImageView
android:id="@+id/zone_image"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:src="@drawable/floor0"
android:layout_weight="2">
</fr.umlv.assistoid.zoning.FloorImageView>
<SeekBar
android:id="@+id/zoomBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>