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/*
* Copyright (C) 2015 The Android Open Source Project
*
* 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.
*/
package com.android.messaging.util;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.support.v7.graphics.drawable.DrawableWrapper;
import android.support.v7.widget.SwitchCompat;
import android.util.TypedValue;
/* Most methods in this file are copied from
* v7/appcompat/src/android/support/v7/internal/widget/TintManager.java. It would be better if
* we could have just extended the TintManager but this is a final class that we do not have
* access to. */
/**
* Util methods for the SwitchCompat widget
*/
public class SwitchCompatUtils {
/**
* Given a color and a SwitchCompat view, updates the SwitchCompat to appear with the appropiate
* color when enabled and checked
*/
public static void updateSwitchCompatColor(SwitchCompat switchCompat, final int color) {
final Context context = switchCompat.getContext();
final TypedValue typedValue = new TypedValue();
switchCompat.setThumbDrawable(getColorTintedDrawable(switchCompat.getThumbDrawable(),
getSwitchThumbColorStateList(context, color, typedValue),
PorterDuff.Mode.MULTIPLY));
switchCompat.setTrackDrawable(getColorTintedDrawable(switchCompat.getTrackDrawable(),
getSwitchTrackColorStateList(context, color, typedValue), PorterDuff.Mode.SRC_IN));
}
private static Drawable getColorTintedDrawable(Drawable oldDrawable,
final ColorStateList colorStateList, final PorterDuff.Mode mode) {
final int[] thumbState = oldDrawable.isStateful() ? oldDrawable.getState() : null;
if (oldDrawable instanceof DrawableWrapper) {
oldDrawable = ((DrawableWrapper) oldDrawable).getWrappedDrawable();
}
final Drawable newDrawable = new TintDrawableWrapper(oldDrawable, colorStateList, mode);
if (thumbState != null) {
newDrawable.setState(thumbState);
}
return newDrawable;
}
private static ColorStateList getSwitchThumbColorStateList(final Context context,
final int color, final TypedValue typedValue) {
final int[][] states = new int[3][];
final int[] colors = new int[3];
int i = 0;
// Disabled state
states[i] = new int[] { -android.R.attr.state_enabled };
colors[i] = getColor(Color.parseColor("#ffbdbdbd"), 1f);
i++;
states[i] = new int[] { android.R.attr.state_checked };
colors[i] = color;
i++;
// Default enabled state
states[i] = new int[0];
colors[i] = getThemeAttrColor(context, typedValue,
android.support.v7.appcompat.R.attr.colorSwitchThumbNormal);
i++;
return new ColorStateList(states, colors);
}
private static ColorStateList getSwitchTrackColorStateList(final Context context,
final int color, final TypedValue typedValue) {
final int[][] states = new int[3][];
final int[] colors = new int[3];
int i = 0;
// Disabled state
states[i] = new int[] { -android.R.attr.state_enabled };
colors[i] = getThemeAttrColor(context, typedValue, android.R.attr.colorForeground, 0.1f);
i++;
states[i] = new int[] { android.R.attr.state_checked };
colors[i] = getColor(color, 0.3f);
i++;
// Default enabled state
states[i] = new int[0];
colors[i] = getThemeAttrColor(context, typedValue, android.R.attr.colorForeground, 0.3f);
i++;
return new ColorStateList(states, colors);
}
private static int getThemeAttrColor(final Context context, final TypedValue typedValue,
final int attr) {
if (context.getTheme().resolveAttribute(attr, typedValue, true)) {
if (typedValue.type >= TypedValue.TYPE_FIRST_INT
&& typedValue.type <= TypedValue.TYPE_LAST_INT) {
return typedValue.data;
} else if (typedValue.type == TypedValue.TYPE_STRING) {
return context.getResources().getColor(typedValue.resourceId);
}
}
return 0;
}
private static int getThemeAttrColor(final Context context, final TypedValue typedValue,
final int attr, final float alpha) {
final int color = getThemeAttrColor(context, typedValue, attr);
return getColor(color, alpha);
}
private static int getColor(int color, float alpha) {
final int originalAlpha = Color.alpha(color);
// Return the color, multiplying the original alpha by the disabled value
return (color & 0x00ffffff) | (Math.round(originalAlpha * alpha) << 24);
}
}
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