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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.os.Build;
import android.support.annotation.ColorInt;
import android.support.annotation.NonNull;
import android.support.v4.widget.ImageViewCompat;
import android.util.TypedValue;
import android.widget.ImageView;
import com.mapbox.mapboxsdk.R;
import com.mapbox.mapboxsdk.exceptions.ConversionException;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Locale;
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 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) {
try {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
int id = context.getResources().getIdentifier("colorPrimary", "attrs", context.getPackageName());
theme.resolveAttribute(id, typedValue, true);
return typedValue.data;
} catch (Exception exception) {
return getColorCompat(context, R.color.mapbox_blue);
}
}
/**
* Returns a color integer associated as primary dark color from a theme based on a 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) {
try {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
int id = context.getResources().getIdentifier("colorPrimaryDark", "attrs", context.getPackageName());
theme.resolveAttribute(id, typedValue, true);
return typedValue.data;
} catch (Exception exception) {
return getColorCompat(context, R.color.mapbox_blue);
}
}
/**
* Returns a color integer associated as accent color from a theme based on a 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) {
try {
TypedValue typedValue = new TypedValue();
Resources.Theme theme = context.getTheme();
int id = context.getResources().getIdentifier("colorAccent", "attrs", context.getPackageName());
theme.resolveAttribute(id, typedValue, true);
return typedValue.data;
} catch (Exception exception) {
return getColorCompat(context, R.color.mapbox_gray);
}
}
/**
* Returns a color state list associated with a theme based on a 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 Drawable of an 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) {
ImageViewCompat.setImageTintList(imageView, getSelector(tintColor));
}
/**
* Convert an rgba string to a Color int.
* <p>
* R, G, B color components have to be in the [0-255] range, while alpha has to be in the [0.0-1.0] range.
* For example: "rgba(255, 128, 0, 0.7)".
*
* @param value the String representation of rgba
* @return the int representation of rgba
* @throws ConversionException on illegal input
*/
@ColorInt
public static int rgbaToColor(@NonNull String value) {
// we need to accept and floor float values as well, as those can come from core
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((int) Float.parseFloat(m.group(1)), (int) Float.parseFloat(m.group(2)),
(int) Float.parseFloat(m.group(3)));
} else if (m.matches() && m.groupCount() == 4) {
return Color.argb((int) (Float.parseFloat(m.group(4)) * 255), (int) Float.parseFloat(m.group(1)),
(int) Float.parseFloat(m.group(2)), (int) Float.parseFloat(m.group(3)));
} else {
throw new ConversionException("Not a valid rgb/rgba value");
}
}
/**
* Converts Android color int to "rbga(r, g, b, a)" String equivalent.
* <p>
* Alpha value will be converted from 0-255 range to 0-1.
* </p>
*
* @param color Android color int
* @return String rgba color
*/
public static String colorToRgbaString(@ColorInt int color) {
NumberFormat numberFormat = NumberFormat.getNumberInstance(Locale.US);
DecimalFormat decimalFormat = (DecimalFormat) numberFormat;
decimalFormat.applyPattern("#.###");
String alpha = decimalFormat.format(((float) ((color >> 24) & 0xFF)) / 255.0f);
return String.format(Locale.US, "rgba(%d, %d, %d, %s)",
(color >> 16) & 0xFF, (color >> 8) & 0xFF, color & 0xFF, alpha);
}
/**
* Converts Android color int to rgba float array.
* <p>
* Returned RGB values range from 0 to 255.
* Alpha value ranges from 0-1.
* </p>
*
* @param color Android color int
* @return float rgba array, rgb values range from 0-255, alpha from 0-1
*/
public static float[] colorToRgbaArray(@ColorInt int color) {
return new float[] {
(color >> 16) & 0xFF, // r (0-255)
(color >> 8) & 0xFF, // g (0-255)
color & 0xFF, // b (0-255)
((color >> 24) & 0xFF) / 255.0f // a (0-1)
};
}
/**
* Converts Android color int to GL rgba float array.
* <p>
* Returned values range from 0-1.
* </p>
*
* @param color Android color int
* @return float rgba array, values range from 0 to 1
*/
public static float[] colorToGlRgbaArray(@ColorInt int color) {
return new float[] {
((color >> 16) & 0xFF) / 255.0f, // r (0-1)
((color >> 8) & 0xFF) / 255.0f, // g (0-1)
(color & 0xFF) / 255.0f, // b (0-1)
((color >> 24) & 0xFF) / 255.0f // a (0-1)
};
}
private static int getColorCompat(@NonNull Context context, int id) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
return context.getResources().getColor(id, context.getTheme());
} else {
return context.getResources().getColor(id);
}
}
}
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