Drawing Hexagons

gistfile1.txt

private View createPageView(final Group group) {

  	final RelativeLayout view = (RelativeLayout) View.inflate(getActivity(), R.layout.fragment_channel, null);
		
		// http://stackoverflow.com/questions/2739971/overlay-two-images-in-android-to-set-an-imageview

		Resources r = getResources();

		Drawable mask = r.getDrawable(R.drawable.btn_group_mask);

		StateListDrawable states = new StateListDrawable();
		
		HexagonDrawable hexagon = null;
		Drawable[] layers;
		LayerDrawable layerDrawable;
		
		hexagon = new HexagonDrawable();
		hexagon.fill();
		
		// http://stackoverflow.com/questions/4928772/android-color-darker
		float[] hsv = new float[3];
		int color = group.getUIColor();
		Color.colorToHSV(color, hsv);
		hsv[2] *= 0.8f; // value component
		color = Color.HSVToColor(hsv);
		hexagon.setColor(color);
		
		layers = new Drawable[2];
		layers[0] = hexagon;
		layers[1] = mask;
		layerDrawable = new LayerDrawable(layers);

		states.addState(new int[] { android.R.attr.state_pressed }, layerDrawable);
		states.addState(new int[] { android.R.attr.state_focused }, layerDrawable);
		
		hexagon = new HexagonDrawable();
		hexagon.fill();
		hexagon.setColor(group.getUIColor());
		
		layers = new Drawable[2];
		layers[0] = hexagon;
		layers[1] = mask;
		layerDrawable = new LayerDrawable(layers);

		states.addState(new int[] {}, layerDrawable);

		Button button = (Button) view.findViewById(R.id.group_button);
		button.setBackground(states);
		
		if (group.name != null) {
			button.setText(group.name.toUpperCase());
		} else {
			button.setText("Unknown");
		}
		button.setTypeface(UIHelper.categoryButtonTypeface(getActivity()));
		button.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View v) {
				mCallback.onGroupSelect(group);
			}

		});
		return view;
	}