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package com.mapbox.mapboxsdk.attribution;
import android.graphics.Bitmap;
import android.graphics.PointF;
import android.widget.TextView;
import java.util.Arrays;
import java.util.List;
public class AttributionMeasure {
private Bitmap logo;
private Bitmap logoSmall;
private Bitmap snapshot;
private TextView textView;
private TextView textViewShort;
private float margin;
private boolean shorterText;
AttributionMeasure(Bitmap snapshot, Bitmap logo, Bitmap logoSmall, TextView tv, TextView tvShort, float margin) {
this.snapshot = snapshot;
this.logo = logo;
this.logoSmall = logoSmall;
this.textView = tv;
this.textViewShort = tvShort;
this.margin = margin;
}
public AttributionLayout measure() {
Chain chain = new Chain(
new FullLogoLongTextCommand(),
new FullLogoShortTextCommand(),
new SmallLogoLongTextCommand(),
new SmallLogoShortTextCommand(),
new LongTextCommand(),
new ShortTextCommand(),
new NoTextCommand()
);
AttributionLayout attributionLayout = chain.start(this);
shorterText = attributionLayout.isShortText();
return attributionLayout;
}
private static class FullLogoLongTextCommand implements Command {
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getLogoContainerWidth() + measure.getTextViewContainerWidth();
boolean fitBounds = width <= measure.getMaxSize();
if (fitBounds) {
PointF anchor = calculateAnchor(measure.snapshot, measure.textView, measure.margin);
return new AttributionLayout(measure.logo, anchor, false);
}
return null;
}
}
private static class FullLogoShortTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getLogoContainerWidth() + measure.getTextViewShortContainerWidth();
boolean fitBounds = width <= measure.getMaxSizeShort();
if (fitBounds) {
PointF anchor = calculateAnchor(measure.snapshot, measure.textViewShort, measure.margin);
return new AttributionLayout(measure.logo, anchor, true);
}
return null;
}
}
private static class SmallLogoLongTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getLogoSmallContainerWidth() + measure.getTextViewContainerWidth();
boolean fitBounds = width <= measure.getMaxSize();
if (fitBounds) {
PointF anchor = calculateAnchor(measure.snapshot, measure.textView, measure.margin);
return new AttributionLayout(measure.logoSmall, anchor, false);
}
return null;
}
}
private static class SmallLogoShortTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getLogoContainerWidth() + measure.getTextViewShortContainerWidth();
boolean fitBounds = width <= measure.getMaxSizeShort();
if (fitBounds) {
PointF anchor = calculateAnchor(measure.snapshot, measure.textViewShort, measure.margin);
return new AttributionLayout(measure.logoSmall, anchor, true);
}
return null;
}
}
private static class LongTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getTextViewContainerWidth() + measure.margin;
boolean fitBounds = width <= measure.getMaxSize();
if (fitBounds) {
return new AttributionLayout(null, calculateAnchor(measure.snapshot, measure.textView, measure.margin), false);
}
return null;
}
}
private static class ShortTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
float width = measure.getTextViewShortContainerWidth() + measure.margin;
boolean fitBounds = width <= measure.getMaxSizeShort();
if (fitBounds) {
PointF anchor = calculateAnchor(measure.snapshot, measure.textViewShort, measure.margin);
return new AttributionLayout(null, anchor, true);
}
return null;
}
}
private static class NoTextCommand implements Command {
@Override
public AttributionLayout execute(AttributionMeasure measure) {
return new AttributionLayout(null, null, false);
}
}
private static PointF calculateAnchor(Bitmap snapshot, TextView textView, float margin) {
return new PointF(
snapshot.getWidth() - textView.getMeasuredWidth() - margin,
snapshot.getHeight() - margin - textView.getMeasuredHeight()
);
}
public TextView getTextView() {
return shorterText ? textViewShort : textView;
}
private class Chain {
public List<Command> commands;
Chain(Command... commands) {
this.commands = Arrays.asList(commands);
}
public AttributionLayout start(AttributionMeasure measure) {
AttributionLayout attributionLayout = null;
for (Command command : commands) {
attributionLayout = command.execute(measure);
if (attributionLayout != null) {
break;
}
}
return attributionLayout;
}
}
public interface Command {
AttributionLayout execute(AttributionMeasure measure);
}
private float getTextViewContainerWidth() {
return textView.getMeasuredWidth() + margin;
}
private float getLogoContainerWidth() {
return logo.getWidth() + (2 * margin);
}
private float getTextViewShortContainerWidth() {
return textViewShort.getMeasuredWidth() + margin;
}
private float getLogoSmallContainerWidth() {
return logoSmall.getWidth() + (2 * margin);
}
private float getMaxSize() {
return snapshot.getWidth() * 8 / 10;
}
private float getMaxSizeShort() {
return snapshot.getWidth();
}
public static class Builder {
private Bitmap snapshot;
private Bitmap logo;
private Bitmap logoSmall;
private TextView textView;
private TextView textViewShort;
private float marginPadding;
public Builder setSnapshot(Bitmap snapshot) {
this.snapshot = snapshot;
return this;
}
public Builder setLogo(Bitmap logo) {
this.logo = logo;
return this;
}
public Builder setLogoSmall(Bitmap logoSmall) {
this.logoSmall = logoSmall;
return this;
}
public Builder setTextView(TextView textView) {
this.textView = textView;
return this;
}
public Builder setTextViewShort(TextView textViewShort) {
this.textViewShort = textViewShort;
return this;
}
public Builder setMarginPadding(float marginPadding) {
this.marginPadding = marginPadding;
return this;
}
public AttributionMeasure build() {
return new AttributionMeasure(snapshot, logo, logoSmall, textView, textViewShort, marginPadding);
}
}
}
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