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CopyrightOverlay.java
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CopyrightOverlay.java
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package org.osmdroid.views.overlay;
////////////////////////////////////////////////////////////////////////////////
//
// Location - An Android location app.
//
// Copyright (C) 2015 Bill Farmer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Bill Farmer william j farmer [at] yahoo [dot] co [dot] uk.
//
///////////////////////////////////////////////////////////////////////////////
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.util.DisplayMetrics;
import org.osmdroid.tileprovider.tilesource.ITileSource;
import org.osmdroid.views.MapView;
import org.osmdroid.views.Projection;
/**
* CopyrightOverlay - uses the {@link ITileSource#getCopyrightNotice()} text to paint on the screen
*
* <a href="https://github.com/billthefarmer/location/blob/master/src/main/java/org/billthefarmer/location/CopyrightOverlay.java">Original source</a>
*
* <a href="https://github.com/osmdroid/osmdroid/issues/501">Issue 501</a>
*
* <a href="http://www.openstreetmap.org/copyright/en">Open Street Map's guidance on attribution</a>
* created on 1/2/2017.
*
* @author billthefarmer@github
* @author Alex O'Ree
* @since 5.6.3
*/
public class CopyrightOverlay extends Overlay {
private Paint paint;
int xOffset = 10;
int yOffset = 10;
protected boolean alignBottom = true;
protected boolean alignRight = false;
final DisplayMetrics dm;
private String mCopyrightNotice;
// Constructor
public CopyrightOverlay(Context context) {
super();
// Get the string
Resources resources = context.getResources();
// Get the display metrics
dm = resources.getDisplayMetrics();
// Get paint
paint = new Paint();
paint.setAntiAlias(true);
paint.setTextSize(dm.density * 12);
}
public void setTextSize(int fontSize) {
paint.setTextSize(dm.density * fontSize);
}
public void setTextColor(int color) {
paint.setColor(color);
}
// Set alignBottom
public void setAlignBottom(boolean alignBottom) {
this.alignBottom = alignBottom;
}
// Set alignRight
public void setAlignRight(boolean alignRight) {
this.alignRight = alignRight;
}
/**
* Sets the screen offset. Values are in real pixels, not dip
*
* @param x horizontal screen offset, if aligh right is set, the offset is from the right, otherwise lift
* @param y vertical screen offset, if align bottom is set, the offset is pixels from the bottom (not the top)
*/
public void setOffset(final int x, final int y) {
xOffset = x;
yOffset = y;
}
@Override
public void draw(Canvas canvas, MapView map, boolean shadow) {
setCopyrightNotice(map.getTileProvider().getTileSource().getCopyrightNotice());
draw(canvas, map.getProjection());
}
/**
* @since 6.1.0
*/
@Override
public void draw(final Canvas canvas, final Projection pProjection) {
if (mCopyrightNotice == null || mCopyrightNotice.length() == 0)
return;
int width = canvas.getWidth();
int height = canvas.getHeight();
float x = 0;
float y = 0;
if (alignRight) {
x = width - xOffset;
paint.setTextAlign(Paint.Align.RIGHT);
} else {
x = xOffset;
paint.setTextAlign(Paint.Align.LEFT);
}
if (alignBottom)
y = height - yOffset;
else
y = paint.getTextSize() + yOffset;
// Draw the text
pProjection.save(canvas, false, false);
canvas.drawText(mCopyrightNotice, x, y, paint);
pProjection.restore(canvas, false);
}
/**
* @since 6.1.0
*/
public void setCopyrightNotice(final String pCopyrightNotice) {
mCopyrightNotice = pCopyrightNotice;
}
}