Explore canvas + part solution.

app/src/main/java/com/codigoparallevar/minicards/DrawView.java

@@ -4,20 +4,34 @@ import android.content.Context;
 import android.graphics.Canvas;
 import android.graphics.Color;
 import android.graphics.Paint;
+import android.util.Log;
 import android.view.View;
 
+import com.codigoparallevar.minicards.parts.Part;
+import com.codigoparallevar.minicards.parts.Placeholder;
+import com.codigoparallevar.minicards.parts.buttons.RoundButton;
+
+import java.util.LinkedList;
+import java.util.List;
+
 class DrawView extends View {
 
     Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+    List<Part> parts = new LinkedList<>();
 
     public DrawView(Context context) {
         super(context);
         paint.setColor(Color.RED);
+        parts.add(new RoundButton(500, 1200, 80, 100));
     }
 
     @Override
     public void onDraw(Canvas canvas){
-        canvas.drawLine(0, 0, 20, 20, paint);
+        long time = System.currentTimeMillis();
-        canvas.drawLine(20, 0, 0, 20, paint);
+        for (Part part : parts){
+            part.draw(canvas);
+        }
+
+        Log.d("Render time", System.currentTimeMillis() - time + "ms");
     }
 }

app/src/main/java/com/codigoparallevar/minicards/parts/Part.java

@@ -0,0 +1,12 @@
+package com.codigoparallevar.minicards.parts;
+
+import android.graphics.Canvas;
+
+public interface Part {
+    public int getLeft();
+    public int getRight();
+    public int getTop();
+    public int getBottom();
+
+    public void draw(Canvas canvas);
+}

app/src/main/java/com/codigoparallevar/minicards/parts/Placeholder.java

@@ -0,0 +1,58 @@
+package com.codigoparallevar.minicards.parts;
+
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+
+public class Placeholder implements Part {
+    private final int _left;
+    private final int _top;
+    private final int _right;
+    private final int _bottom;
+
+    public Placeholder(int left, int top, int right, int bottom) {
+        _left = left;
+        _top = top;
+        _right = right;
+        _bottom = bottom;
+    }
+
+    @Override
+    public int getLeft() {
+        return _left;
+    }
+
+    @Override
+    public int getRight() {
+        return _right;
+    }
+
+    @Override
+    public int getTop() {
+        return _top;
+    }
+
+    @Override
+    public int getBottom() {
+        return _bottom;
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        paint.setColor(Color.WHITE);
+
+        // Top
+        canvas.drawLine(_left,_top, _right, _top, paint);
+        // Bottom
+        canvas.drawLine(_left, _bottom, _right, _bottom, paint);
+        // Left
+        canvas.drawLine(_left, _top, _left, _bottom, paint);
+        // Right
+        canvas.drawLine(_right, _top, _right, _bottom, paint);
+        // Cross, top-left, bottom-right
+        canvas.drawLine(_left, _top, _right, _bottom, paint);
+        // Cross, top-right, bottom-left
+        canvas.drawLine(_right, _top, _left, _bottom, paint);
+    }
+}

app/src/main/java/com/codigoparallevar/minicards/parts/buttons/RoundButton.java

@@ -0,0 +1,57 @@
+package com.codigoparallevar.minicards.parts.buttons;
+
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.graphics.Paint;
+
+import com.codigoparallevar.minicards.parts.Part;
+
+public class RoundButton implements Part {
+
+
+    private final int _xCenter;
+    private final int _yCenter;
+    private final int _innerRadius;
+    private final int _outerRadius;
+    private final int _outerRadiusThickness = 10;
+
+    public RoundButton(int xCenter, int yCenter, int innerRadius, int outerRadius) {
+        _xCenter = xCenter;
+        _yCenter = yCenter;
+        _innerRadius = innerRadius;
+        _outerRadius = outerRadius;
+    }
+
+    @Override
+    public int getLeft() {
+        return _xCenter - _outerRadius / 2;
+    }
+
+    @Override
+    public int getRight() {
+        return _xCenter + _outerRadius / 2;
+    }
+
+    @Override
+    public int getTop() {
+        return _yCenter - _outerRadius / 2;
+    }
+
+    @Override
+    public int getBottom() {
+        return _yCenter + _outerRadius / 2;
+    }
+
+    @Override
+    public void draw(Canvas canvas) {
+        Paint foregroundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        foregroundPaint.setColor(Color.WHITE);
+
+        Paint backgroundPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
+        backgroundPaint.setColor(Color.BLACK);
+
+        canvas.drawCircle(_xCenter, _yCenter, _outerRadius, foregroundPaint);
+        canvas.drawCircle(_xCenter, _yCenter, _outerRadius - _outerRadiusThickness, backgroundPaint);
+        canvas.drawCircle(_xCenter, _yCenter, _innerRadius, foregroundPaint);
+    }
+}