LayerDrawerHandler.java

/*
 *  This file is part of Oekaki Mobile.
 *  Copyright (C) 2013 Jeremy Lam
 *  
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *  
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package idv.jlchntoz.oekakimobile;

import idv.jlchntoz.oekakimobile.CheckBoxedArrayAdapter.OnCheckChangedListener;

import com.chibipaint.*;
import com.chibipaint.engine.*;
import com.chibipaint.util.CPRect;
import com.mobeta.android.dslv.DragSortController;
import com.mobeta.android.dslv.DragSortListView;

import android.content.Context;
import android.view.View;
import android.widget.*;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.SeekBar.OnSeekBarChangeListener;

public class LayerDrawerHandler implements CPArtwork.ICPArtworkListener,
		DragSortListView.DropListener, DragSortListView.RemoveListener {

	public final CPController controller;
	public final Context context;
	public final View drawerView;

	DragSortController lstLayerCtrl;
	CheckBoxedArrayAdapter lstLayersAdapter;
	DragSortListView lstLayers;
	CheckBox CBLockAlpha, CBSampleAll;
	SeekBar SBAlpha;
	Spinner SPMixType;

	public LayerDrawerHandler(Context context, CPController controller,
			View drawerView) {
		this.context = context;
		this.drawerView = drawerView;
		this.controller = controller;

		lstLayers = (DragSortListView) drawerView.findViewById(R.id.lstlayers);
		CBLockAlpha = (CheckBox) drawerView.findViewById(R.id.cblockalpha);
		CBSampleAll = (CheckBox) drawerView.findViewById(R.id.cbsampleall);
		SBAlpha = (SeekBar) drawerView.findViewById(R.id.sblayeralpha);
		SPMixType = (Spinner) drawerView.findViewById(R.id.spmixtype);

		ArrayAdapter<CharSequence> aaMixType = ArrayAdapter.createFromResource(
				this.context, R.array.mixModeNames,
				android.R.layout.simple_spinner_item);
		aaMixType
				.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
		SPMixType.setAdapter(aaMixType);
		SPMixType.setOnItemSelectedListener(new OnItemSelectedListener() {
			@Override
			public void onItemSelected(AdapterView<?> parent, View v, int position,
					long id) {
				LayerDrawerHandler.this.controller.artwork.setBlendMode(
						LayerDrawerHandler.this.controller.artwork.getActiveLayerNb(),
						position);
			}

			@Override
			public void onNothingSelected(AdapterView<?> arg0) {
			}
		});

		SBAlpha.setMax(100);
		SBAlpha.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
			@Override
			public void onProgressChanged(SeekBar sb, int p, boolean u) {
				LayerDrawerHandler.this.controller.artwork.setLayerAlpha(
						LayerDrawerHandler.this.controller.artwork.getActiveLayerNb(), p);
			}

			@Override
			public void onStartTrackingTouch(SeekBar seekBar) {
			}

			@Override
			public void onStopTrackingTouch(SeekBar seekBar) {
			}
		});

		CBLockAlpha.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			@Override
			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
				LayerDrawerHandler.this.controller.artwork.setLockAlpha(isChecked);
			}
		});

		CBSampleAll.setOnCheckedChangeListener(new OnCheckedChangeListener() {
			@Override
			public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
				LayerDrawerHandler.this.controller.artwork
						.setSampleAllLayers(isChecked);

			}
		});

		loadLayerSettings();

		lstLayerCtrl = new DragSortController(lstLayers);
		lstLayers.setFloatViewManager(lstLayerCtrl);
		lstLayers.setOnTouchListener(lstLayerCtrl);
		lstLayers.setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE);
		lstLayers.setDropListener(this);
		lstLayers.setRemoveListener(this);

		lstLayerCtrl.setDragHandleId(R.id.drag_handle);
		lstLayerCtrl.setRemoveMode(DragSortController.FLING_REMOVE);
		lstLayerCtrl.setDragInitMode(DragSortController.ON_DRAG);

		controller.artwork.addListener(this);
		layerChange(controller.artwork);
	}

	@Override
	public void updateRegion(CPArtwork artwork, CPRect region) {
	}

	@Override
	public void layerChange(CPArtwork artwork) {
		Boolean lstNull = false;
		Object layers[] = artwork.getLayers();
		int index = 0, count = layers.length;
		if (lstLayersAdapter == null) {
			lstLayersAdapter = new CheckBoxedArrayAdapter(context,
					R.layout.checkablelayout, R.id.cbchecked, R.id.tvlsicontent,
					new CheckBoxedArrayAdapter.list());
			lstLayersAdapter.setOnCheckedChangeListener(new OnCheckChangedListener() {
				@Override
				public void OnCheckedChange(CompoundButton buttonView, int position,
						boolean isChecked) {
					controller.artwork.setLayerVisibility(lstLayersAdapter.getCount() - 1
							- position, isChecked);
				}
			});
			lstLayersAdapter
					.setOnClickListener(new CheckBoxedArrayAdapter.OnItemClickListener() {
						@Override
						public void OnItemClick(View view, int pos) {
							int p = lstLayersAdapter.getCount() - 1 - pos;
							controller.artwork.setActiveLayer(p);
							loadLayerSettings();
							controller.artwork.callListenersLayerChange();
						}
					});
			lstNull = true;
		}
		for (Object layer : layers) {
			CPLayer _l = (CPLayer) layer;
			int _index = lstLayersAdapter.getCount() - 1 - index;
			if (index < lstLayersAdapter.getCount()) {
				lstLayersAdapter.remove(lstLayersAdapter.getItem(_index));
				lstLayersAdapter.insert(_l.name, _l.visible,
						controller.artwork.getActiveLayerNb() == index, _index);
			} else
				lstLayersAdapter.add(_l.name, _l.visible,
						controller.artwork.getActiveLayerNb() == index);
			index++;
		}
		while (index < lstLayersAdapter.getCount())
			lstLayersAdapter.remove(lstLayersAdapter.getItem(0));
		if (lstNull)
			lstLayers.setAdapter(lstLayersAdapter);
		else
			lstLayersAdapter.notifyDataSetChanged();
		for (int i = 0; i < count; i++)
			lstLayers.setItemChecked(lstLayersAdapter.getCount() - 1 - i,
					((CPLayer) layers[i]).visible);
		lstLayerCtrl.setRemoveEnabled(count > 1);
		controller.artwork.callListenersUpdateRegion(controller.artwork.getSize());
		((MainActivity)context).rePaint();
	}

	private void loadLayerSettings() {
		SBAlpha.setProgress(controller.artwork.getActiveLayer().alpha);
		SPMixType.setSelection(controller.artwork.getActiveLayer().blendMode);
	}

	@Override
	public void remove(int which) {
		controller.artwork.setActiveLayer(lstLayersAdapter.getCount() - 1 - which);
		controller.artwork.removeLayer();
	}

	@Override
	public void drop(int from, int to) {
		from = lstLayersAdapter.getCount() - 1 - from;
		to = lstLayersAdapter.getCount() - 1 - to;
		loadLayerSettings();
		if (to != from)
			controller.artwork.moveLayer(from, to);
		loadLayerSettings();
	}

}