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/*
* Copyright (C) 2014 Andrew Comminos
*
* 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 se.lublin.mumla.service;
import android.content.Context;
import android.content.Intent;
import android.graphics.PixelFormat;
import android.net.Uri;
import android.os.Build;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.Toast;
import se.lublin.mumla.R;
/**
* A hot corner in an area of the screen specified by {@link MumlaHotCorner#getGravity()}.
* Created by andrew on 07/06/14.
*/
public class MumlaHotCorner implements View.OnTouchListener {
private WindowManager mWindowManager;
private Context mContext;
private View mView;
private boolean mShown;
private int mHighlightColour;
private MumlaHotCornerListener mListener;
private WindowManager.LayoutParams mParams;
public MumlaHotCorner(Context context, int gravity, MumlaHotCornerListener listener) {
if(listener == null) {
throw new NullPointerException("A MumlaHotCornerListener must be assigned.");
}
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
mContext = context;
mView = inflater.inflate(R.layout.ptt_corner, null, false);
mView.setOnTouchListener(this);
mListener = listener;
mParams = new WindowManager.LayoutParams(WindowManager.LayoutParams.WRAP_CONTENT,
WindowManager.LayoutParams.WRAP_CONTENT,
Build.VERSION.SDK_INT >= Build.VERSION_CODES.O
? WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
: WindowManager.LayoutParams.TYPE_SYSTEM_ALERT,
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH,
PixelFormat.TRANSLUCENT);
mParams.gravity = gravity;
mHighlightColour = mContext.getResources().getColor(R.color.holo_blue_bright);
}
/**
* Updates the hot corner with any new settings applied, recalculating the layout parameters.
* Does nothing if the hot corner is not shown.
*/
private void updateLayout() {
if(!isShown()) return;
mWindowManager.updateViewLayout(mView, mParams);
}
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mView.setBackgroundColor(mHighlightColour);
mListener.onHotCornerDown();
return true;
case MotionEvent.ACTION_UP:
mView.setBackgroundColor(0);
mListener.onHotCornerUp();
return true;
default:
return false;
}
}
public void setShown(boolean shown) {
if (shown == mShown) {
return;
}
if (shown) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
if (!android.provider.Settings.canDrawOverlays(mContext)) {
Intent showSetting = new Intent(android.provider.Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
Uri.parse("package:" + mContext.getPackageName()));
showSetting.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
mContext.startActivity(showSetting);
Toast.makeText(mContext, R.string.grant_perm_draw_over_apps, Toast.LENGTH_LONG).show();
return;
}
}
mWindowManager.addView(mView, mParams);
} else {
mWindowManager.removeView(mView);
}
mShown = shown;
}
public boolean isShown() {
return mShown;
}
public void setGravity(int gravity) {
mParams.gravity = gravity;
updateLayout();
}
public int getGravity() {
return mParams.gravity;
}
public static interface MumlaHotCornerListener {
public void onHotCornerDown();
public void onHotCornerUp();
}
}
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