Added pathviews preview when visiting

Sources/app/src/main/java/Views/ClickDetector.java

@@ -2,16 +2,24 @@ package Views;
 
 import android.content.Context;
 import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+import android.graphics.RectF;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.Toast;
 
+import com.furwaz.roomview.R;
+
 import Common.Callback;
 import Common.Coord;
+import Structures.PathView;
+import Structures.PhotoInfo;
 
 public class ClickDetector extends View {
     Callback cb = null;
+    PhotoInfo photo = null;
 
     // set the on touch callback function
     protected void init() {
@@ -35,6 +43,11 @@ public class ClickDetector extends View {
         this.cb = c;
     }
 
+    public void setPhoto(PhotoInfo p) {
+        this.photo = p;
+        this.invalidate();
+    }
+
     // on touch, if the touch is valid (only one finger, and the action is up), call the callback function with the touch coordinates
     protected boolean touchListener(View v, MotionEvent ev) {
         if (ev.getPointerCount() != 1) return true;
@@ -47,5 +60,36 @@ public class ClickDetector extends View {
     @Override
     protected void onDraw(Canvas canvas) {
         super.onDraw(canvas);
+
+        if (photo == null) return;
+        for (PathView p : photo.getPathViews()) {
+            drawDoorZone(
+                    canvas,
+                    p.getRect(),
+                    p.getPath().getName()
+            );
+        }
+    }
+
+    // draw one pathview on the canvas
+    protected void drawDoorZone(Canvas c, RectF rect, String name) {
+        Paint p = new Paint();
+        int width = getWidth();
+        int height = getHeight();
+
+        RectF r = new RectF(rect.left * width, rect.top * height,  rect.right * width, rect.bottom * height);
+
+        p.setColor(Color.parseColor("#60f8fafc"));
+        c.drawRect(
+                r.left,
+                r.top,
+                r.right,
+                r.bottom,
+                p
+        );
+        p.setColor(getResources().getColor(R.color.slate_50, getContext().getTheme()));
+        p.setTextSize(36);
+        p.setTextAlign(Paint.Align.CENTER);
+        c.drawText(name, (r.left + r.right) / 2, (r.top + r.bottom) / 2, p);
     }
 }

Sources/app/src/main/java/com/furwaz/roomview/ZoneView.java

@@ -48,6 +48,7 @@ public class ZoneView extends AppCompatActivity {
     PhotoInfo photo = null;
 
     Orientation orient = Orientation.NORTH;
+    ClickDetector bitmap_zone = null;
 
     // return the string corresponding to the orientation
     protected String stringifyOrientation(Orientation orient) {
@@ -135,7 +136,7 @@ public class ZoneView extends AppCompatActivity {
         });
 
         // set the photo zone click listener (for pathviews click, to move)
-        ClickDetector bitmap_zone = findViewById(R.id.bitmap_zone);
+        if (bitmap_zone == null) bitmap_zone = findViewById(R.id.bitmap_zone);
         bitmap_zone.setOnClickCallback(param -> {
             Coord c = (Coord) param;
             this.onClickAt(c);
@@ -155,6 +156,7 @@ public class ZoneView extends AppCompatActivity {
         TextView tv_orient = findViewById(R.id.orient_text);
         TextView tv_room = findViewById(R.id.room_name);
         TextView tv_zone = findViewById(R.id.zone_name);
+        if (bitmap_zone == null) bitmap_zone = findViewById(R.id.bitmap_zone);
 
         tv_orient.setText(getResources().getString(R.string.orientation)+": "+stringifyOrientation(this.orient));
         tv_room.setText(room == null? "": room.getName());
@@ -182,6 +184,8 @@ public class ZoneView extends AppCompatActivity {
             return;
         }
 
+        bitmap_zone.setPhoto(photo);
+
         // if the photo has not been taken yet, display an error message
         Bitmap bm = photo.getBitmap();
         if (bm == null) {