| /* |
| * Copyright (C) 2017 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.launcher3.util; |
| |
| import android.content.Context; |
| import android.content.res.Configuration; |
| import android.content.res.TypedArray; |
| import android.graphics.Color; |
| import android.graphics.ColorMatrix; |
| import android.graphics.drawable.Drawable; |
| import android.util.AttributeSet; |
| import android.util.SparseArray; |
| import android.util.TypedValue; |
| |
| import com.android.launcher3.R; |
| import com.android.launcher3.Utilities; |
| import com.android.launcher3.uioverrides.WallpaperColorInfo; |
| |
| /** |
| * Various utility methods associated with theming. |
| */ |
| public class Themes { |
| |
| public static int getActivityThemeRes(Context context) { |
| WallpaperColorInfo wallpaperColorInfo = WallpaperColorInfo.getInstance(context); |
| boolean darkTheme; |
| if (Utilities.ATLEAST_Q) { |
| Configuration configuration = context.getResources().getConfiguration(); |
| int nightMode = configuration.uiMode & Configuration.UI_MODE_NIGHT_MASK; |
| darkTheme = nightMode == Configuration.UI_MODE_NIGHT_YES; |
| } else { |
| darkTheme = wallpaperColorInfo.isDark(); |
| } |
| |
| if (darkTheme) { |
| return wallpaperColorInfo.supportsDarkText() ? |
| R.style.AppTheme_Dark_DarkText : wallpaperColorInfo.isMainColorDark() ? |
| R.style.AppTheme_Dark_DarkMainColor : R.style.AppTheme_Dark; |
| } else { |
| return wallpaperColorInfo.supportsDarkText() ? |
| R.style.AppTheme_DarkText : wallpaperColorInfo.isMainColorDark() ? |
| R.style.AppTheme_DarkMainColor : R.style.AppTheme; |
| } |
| } |
| |
| public static String getDefaultBodyFont(Context context) { |
| TypedArray ta = context.obtainStyledAttributes(android.R.style.TextAppearance_DeviceDefault, |
| new int[]{android.R.attr.fontFamily}); |
| String value = ta.getString(0); |
| ta.recycle(); |
| return value; |
| } |
| |
| public static float getDialogCornerRadius(Context context) { |
| return getDimension(context, android.R.attr.dialogCornerRadius, |
| context.getResources().getDimension(R.dimen.default_dialog_corner_radius)); |
| } |
| |
| public static float getDimension(Context context, int attr, float defaultValue) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| float value = ta.getDimension(0, defaultValue); |
| ta.recycle(); |
| return value; |
| } |
| |
| public static int getColorAccent(Context context) { |
| return getAttrColor(context, android.R.attr.colorAccent); |
| } |
| |
| public static int getAttrColor(Context context, int attr) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| int colorAccent = ta.getColor(0, 0); |
| ta.recycle(); |
| return colorAccent; |
| } |
| |
| public static boolean getAttrBoolean(Context context, int attr) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| boolean value = ta.getBoolean(0, false); |
| ta.recycle(); |
| return value; |
| } |
| |
| public static Drawable getAttrDrawable(Context context, int attr) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| Drawable value = ta.getDrawable(0); |
| ta.recycle(); |
| return value; |
| } |
| |
| public static int getAttrInteger(Context context, int attr) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| int value = ta.getInteger(0, 0); |
| ta.recycle(); |
| return value; |
| } |
| |
| /** |
| * Returns the alpha corresponding to the theme attribute {@param attr}, in the range [0, 255]. |
| */ |
| public static int getAlpha(Context context, int attr) { |
| TypedArray ta = context.obtainStyledAttributes(new int[]{attr}); |
| float alpha = ta.getFloat(0, 0); |
| ta.recycle(); |
| return (int) (255 * alpha + 0.5f); |
| } |
| |
| /** |
| * Scales a color matrix such that, when applied to color R G B A, it produces R' G' B' A' where |
| * R' = r * R |
| * G' = g * G |
| * B' = b * B |
| * A' = a * A |
| * |
| * The matrix will, for instance, turn white into r g b a, and black will remain black. |
| * |
| * @param color The color r g b a |
| * @param target The ColorMatrix to scale |
| */ |
| public static void setColorScaleOnMatrix(int color, ColorMatrix target) { |
| target.setScale(Color.red(color) / 255f, Color.green(color) / 255f, |
| Color.blue(color) / 255f, Color.alpha(color) / 255f); |
| } |
| |
| /** |
| * Changes a color matrix such that, when applied to srcColor, it produces dstColor. |
| * |
| * Note that values on the last column of target ColorMatrix can be negative, and may result in |
| * negative values when applied on a color. Such negative values will be automatically shifted |
| * up to 0 by the framework. |
| * |
| * @param srcColor The color to start from |
| * @param dstColor The color to create by applying target on srcColor |
| * @param target The ColorMatrix to transform the color |
| */ |
| public static void setColorChangeOnMatrix(int srcColor, int dstColor, ColorMatrix target) { |
| target.reset(); |
| target.getArray()[4] = Color.red(dstColor) - Color.red(srcColor); |
| target.getArray()[9] = Color.green(dstColor) - Color.green(srcColor); |
| target.getArray()[14] = Color.blue(dstColor) - Color.blue(srcColor); |
| target.getArray()[19] = Color.alpha(dstColor) - Color.alpha(srcColor); |
| } |
| |
| /** |
| * Creates a map for attribute-name to value for all the values in {@param attrs} which can be |
| * held in memory for later use. |
| */ |
| public static SparseArray<TypedValue> createValueMap(Context context, AttributeSet attrSet, |
| IntArray keysToIgnore) { |
| int count = attrSet.getAttributeCount(); |
| IntArray attrNameArray = new IntArray(count); |
| for (int i = 0; i < count; i++) { |
| attrNameArray.add(attrSet.getAttributeNameResource(i)); |
| } |
| attrNameArray.removeAllValues(keysToIgnore); |
| |
| int[] attrNames = attrNameArray.toArray(); |
| SparseArray<TypedValue> result = new SparseArray<>(attrNames.length); |
| TypedArray ta = context.obtainStyledAttributes(attrSet, attrNames); |
| for (int i = 0; i < attrNames.length; i++) { |
| TypedValue tv = new TypedValue(); |
| ta.getValue(i, tv); |
| result.put(attrNames[i], tv); |
| } |
| |
| return result; |
| } |
| } |