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package com.mapbox.mapboxsdk.utils;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.support.annotation.ColorInt;
import android.support.annotation.NonNull;
import android.support.v4.graphics.drawable.DrawableCompat;
import android.util.TypedValue;
import android.widget.ImageView;
import com.mapbox.mapboxsdk.R;
import com.mapbox.mapboxsdk.exceptions.ConversionException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Color utility class.
*/
public class ColorUtils {
/**
* Returns a color integer associated as primary color from a theme based on a {@link Context}.
*
* @param context The context used to style the color attributes.
* @return The primary color value of current theme in the form 0xAARRGGBB.
*/
@ColorInt
public static int getPrimaryColor(@NonNull Context context) {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
theme.resolveAttribute(R.attr.colorPrimary, typedValue, true);
return typedValue.data;
}
/**
* Returns a color integer associated as primary dark color from a theme based on a {@link Context}.
*
* @param context The context used to style the color attributes.
* @return The primary dark color value of current theme in the form 0xAARRGGBB.
*/
@ColorInt
public static int getPrimaryDarkColor(@NonNull Context context) {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
theme.resolveAttribute(R.attr.colorPrimaryDark, typedValue, true);
return typedValue.data;
}
/**
* Returns a color integer associated as accent color from a theme based on a {@link Context}.
*
* @param context The context used to style the color attributes.
* @return The accent color value of current theme in the form 0xAARRGGBB.
*/
@ColorInt
public static int getAccentColor(@NonNull Context context) {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
theme.resolveAttribute(R.attr.colorAccent, typedValue, true);
return typedValue.data;
}
/**
* Returns a color state list associated with a theme based on a {@link Context}
*
* @param color The color used for tinting.
* @return A ColorStateList object containing the primary color of a theme
*/
@NonNull
public static ColorStateList getSelector(@ColorInt int color) {
return new ColorStateList(
new int[][] {
new int[] {android.R.attr.state_pressed},
new int[] {}
},
new int[] {
color,
color
}
);
}
/**
* Set a color tint list to the {@link Drawable} of an {@link ImageView}.
*
* @param imageView The view to set the default tint list.
* @param tintColor The color to tint.
*/
public static void setTintList(@NonNull ImageView imageView, @ColorInt int tintColor) {
Drawable originalDrawable = imageView.getDrawable();
Drawable wrappedDrawable = DrawableCompat.wrap(originalDrawable);
DrawableCompat.setTintList(wrappedDrawable, getSelector(tintColor));
}
static int normalizeColorComponent(String value) {
return (int) (Float.parseFloat(value) * 255);
}
/**
* Convert an rgba string to a Color int.
*
* @param value the String representation of rgba
* @return the int representation of rgba
* @throws ConversionException on illegal input
*/
@ColorInt
public static int rgbaToColor(String value) {
Pattern c = Pattern.compile("rgba?\\s*\\(\\s*(\\d+\\.?\\d*)\\s*,\\s*(\\d+\\.?\\d*)\\s*,\\s*(\\d+\\.?\\d*)\\s*,"
+ "?\\s*(\\d+\\.?\\d*)?\\s*\\)");
Matcher m = c.matcher(value);
if (m.matches() && m.groupCount() == 3) {
return Color.rgb(normalizeColorComponent(m.group(1)), normalizeColorComponent(m.group(2)),
normalizeColorComponent(m.group(3)));
} else if (m.matches() && m.groupCount() == 4) {
return Color.argb(normalizeColorComponent(m.group(4)), normalizeColorComponent(m.group(1)),
normalizeColorComponent(m.group(2)), normalizeColorComponent(m.group(3)));
} else {
throw new ConversionException("Not a valid rgb/rgba value");
}
}
}
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