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Diffstat (limited to 'core/java/android/app/IconPackHelper.java')
| -rw-r--r-- | core/java/android/app/IconPackHelper.java | 848 |
1 files changed, 848 insertions, 0 deletions
diff --git a/core/java/android/app/IconPackHelper.java b/core/java/android/app/IconPackHelper.java new file mode 100644 index 0000000..057633f --- /dev/null +++ b/core/java/android/app/IconPackHelper.java @@ -0,0 +1,848 @@ +/* + * Copyright (C) 2014 The CyanogenMod 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 android.app; + +import java.io.File; +import java.io.IOException; +import java.io.InputStream; +import java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.Random; + +import android.content.pm.PackageInfo; +import android.content.res.IThemeService; +import android.graphics.Bitmap; +import android.graphics.Canvas; +import android.graphics.Color; +import android.graphics.ColorMatrix; +import android.graphics.ColorMatrixColorFilter; +import android.graphics.Paint; +import android.graphics.PaintFlagsDrawFilter; +import android.graphics.PorterDuff; +import android.graphics.PorterDuffXfermode; +import android.graphics.Rect; +import android.graphics.drawable.BitmapDrawable; +import android.graphics.drawable.PaintDrawable; +import android.graphics.drawable.VectorDrawable; +import android.os.RemoteException; +import android.os.ServiceManager; +import android.util.Log; +import android.util.TypedValue; +import org.xmlpull.v1.XmlPullParser; +import org.xmlpull.v1.XmlPullParserException; +import org.xmlpull.v1.XmlPullParserFactory; + +import android.content.ComponentName; +import android.content.Context; +import android.content.pm.ActivityInfo; +import android.content.pm.PackageManager.NameNotFoundException; +import android.content.pm.ThemeUtils; +import android.content.res.AssetManager; +import android.content.res.Configuration; +import android.content.res.Resources; +import android.content.res.XmlResourceParser; +import android.graphics.drawable.Drawable; +import android.text.TextUtils; +import android.util.DisplayMetrics; + +/** @hide */ +public class IconPackHelper { + private static final String TAG = IconPackHelper.class.getSimpleName(); + private static final String ICON_MASK_TAG = "iconmask"; + private static final String ICON_BACK_TAG = "iconback"; + private static final String ICON_UPON_TAG = "iconupon"; + private static final String ICON_SCALE_TAG = "scale"; + private static final String ICON_BACK_FORMAT = "iconback%d"; + + private static final ComponentName ICON_BACK_COMPONENT; + private static final ComponentName ICON_MASK_COMPONENT; + private static final ComponentName ICON_UPON_COMPONENT; + private static final ComponentName ICON_SCALE_COMPONENT; + + private static final float DEFAULT_SCALE = 1.0f; + private static final int COMPOSED_ICON_COOKIE = 128; + + private final Context mContext; + private Map<ComponentName, String> mIconPackResourceMap; + private String mLoadedIconPackName; + private Resources mLoadedIconPackResource; + private ComposedIconInfo mComposedIconInfo; + private int mIconBackCount = 0; + private ColorFilterUtils.Builder mFilterBuilder; + + static { + ICON_BACK_COMPONENT = new ComponentName(ICON_BACK_TAG, ""); + ICON_MASK_COMPONENT = new ComponentName(ICON_MASK_TAG, ""); + ICON_UPON_COMPONENT = new ComponentName(ICON_UPON_TAG, ""); + ICON_SCALE_COMPONENT = new ComponentName(ICON_SCALE_TAG, ""); + } + + public IconPackHelper(Context context) { + mContext = context; + mIconPackResourceMap = new HashMap<ComponentName, String>(); + ActivityManager am = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); + mComposedIconInfo = new ComposedIconInfo(); + mComposedIconInfo.iconSize = am.getLauncherLargeIconSize(); + mComposedIconInfo.iconDensity = am.getLauncherLargeIconDensity(); + mFilterBuilder = new ColorFilterUtils.Builder(); + } + + private void loadResourcesFromXmlParser(XmlPullParser parser, + Map<ComponentName, String> iconPackResources) + throws XmlPullParserException, IOException { + mIconBackCount = 0; + int eventType = parser.getEventType(); + do { + + if (eventType != XmlPullParser.START_TAG) { + continue; + } + + if (parseComposedIconComponent(parser, iconPackResources)) { + continue; + } + + if (ColorFilterUtils.parseIconFilter(parser, mFilterBuilder)) { + continue; + } + + if (parser.getName().equalsIgnoreCase(ICON_SCALE_TAG)) { + String factor = parser.getAttributeValue(null, "factor"); + if (factor == null) { + if (parser.getAttributeCount() == 1) { + factor = parser.getAttributeValue(0); + } + } + iconPackResources.put(ICON_SCALE_COMPONENT, factor); + continue; + } + + if (!parser.getName().equalsIgnoreCase("item")) { + continue; + } + + String component = parser.getAttributeValue(null, "component"); + String drawable = parser.getAttributeValue(null, "drawable"); + + // Validate component/drawable exist + if (TextUtils.isEmpty(component) || TextUtils.isEmpty(drawable)) { + continue; + } + + // Validate format/length of component + if (!component.startsWith("ComponentInfo{") || !component.endsWith("}") + || component.length() < 16 || drawable.length() == 0) { + continue; + } + + // Sanitize stored value + component = component.substring(14, component.length() - 1).toLowerCase(); + + ComponentName name = null; + if (!component.contains("/")) { + // Package icon reference + name = new ComponentName(component.toLowerCase(), ""); + } else { + name = ComponentName.unflattenFromString(component); + } + + if (name != null) { + iconPackResources.put(name, drawable); + } + } while ((eventType = parser.next()) != XmlPullParser.END_DOCUMENT); + } + + private boolean isComposedIconComponent(String tag) { + return tag.equalsIgnoreCase(ICON_MASK_TAG) || + tag.equalsIgnoreCase(ICON_BACK_TAG) || + tag.equalsIgnoreCase(ICON_UPON_TAG); + } + + private boolean parseComposedIconComponent(XmlPullParser parser, + Map<ComponentName, String> iconPackResources) { + String icon; + String tag = parser.getName(); + if (!isComposedIconComponent(tag)) { + return false; + } + + if (parser.getAttributeCount() >= 1) { + if (tag.equalsIgnoreCase(ICON_BACK_TAG)) { + mIconBackCount = parser.getAttributeCount(); + for (int i = 0; i < mIconBackCount; i++) { + tag = String.format(ICON_BACK_FORMAT, i); + icon = parser.getAttributeValue(i); + iconPackResources.put(new ComponentName(tag, ""), icon); + } + } else { + icon = parser.getAttributeValue(0); + iconPackResources.put(new ComponentName(tag, ""), + icon); + } + return true; + } + + return false; + } + + public void loadIconPack(String packageName) throws NameNotFoundException { + if (packageName == null) { + mLoadedIconPackResource = null; + mLoadedIconPackName = null; + mComposedIconInfo.iconBacks = null; + mComposedIconInfo.iconMask = mComposedIconInfo.iconUpon = 0; + mComposedIconInfo.iconScale = 0; + mComposedIconInfo.colorFilter = null; + } else { + mIconBackCount = 0; + Resources res = createIconResource(mContext, packageName); + mIconPackResourceMap = getIconResMapFromXml(res, packageName); + mLoadedIconPackResource = res; + mLoadedIconPackName = packageName; + loadComposedIconComponents(); + ColorMatrix cm = mFilterBuilder.build(); + if (cm != null) { + mComposedIconInfo.colorFilter = cm.getArray().clone(); + } + } + } + + public ComposedIconInfo getComposedIconInfo() { + return mComposedIconInfo; + } + + private void loadComposedIconComponents() { + mComposedIconInfo.iconMask = getResourceIdForName(ICON_MASK_COMPONENT); + mComposedIconInfo.iconUpon = getResourceIdForName(ICON_UPON_COMPONENT); + + // Take care of loading iconback which can have multiple images + if (mIconBackCount > 0) { + mComposedIconInfo.iconBacks = new int[mIconBackCount]; + for (int i = 0; i < mIconBackCount; i++) { + mComposedIconInfo.iconBacks[i] = + getResourceIdForName( + new ComponentName(String.format(ICON_BACK_FORMAT, i), "")); + } + } + + // Get the icon scale from this pack + String scale = mIconPackResourceMap.get(ICON_SCALE_COMPONENT); + if (scale != null) { + try { + mComposedIconInfo.iconScale = Float.valueOf(scale); + } catch (NumberFormatException e) { + mComposedIconInfo.iconScale = DEFAULT_SCALE; + } + } else { + mComposedIconInfo.iconScale = DEFAULT_SCALE; + } + } + + private int getResourceIdForName(ComponentName component) { + String item = mIconPackResourceMap.get(component); + if (!TextUtils.isEmpty(item)) { + return getResourceIdForDrawable(item); + } + return 0; + } + + public static Resources createIconResource(Context context, String packageName) + throws NameNotFoundException { + PackageInfo info = context.getPackageManager().getPackageInfo(packageName, 0); + String themeApk = info.applicationInfo.publicSourceDir; + + String prefixPath; + String iconApkPath; + String iconResPath; + if (info.isLegacyIconPackApk) { + iconResPath = ""; + iconApkPath = ""; + prefixPath = ""; + } else { + prefixPath = ThemeUtils.ICONS_PATH; //path inside APK + iconApkPath = ThemeUtils.getIconPackApkPath(packageName); + iconResPath = ThemeUtils.getIconPackResPath(packageName); + } + + AssetManager assets = new AssetManager(); + assets.addIconPath(themeApk, iconApkPath, + prefixPath, Resources.THEME_ICON_PKG_ID); + + DisplayMetrics dm = context.getResources().getDisplayMetrics(); + Configuration config = context.getResources().getConfiguration(); + Resources res = new Resources(assets, dm, config); + return res; + } + + public Map<ComponentName, String> getIconResMapFromXml(Resources res, String packageName) { + XmlPullParser parser = null; + InputStream inputStream = null; + Map<ComponentName, String> iconPackResources = new HashMap<ComponentName, String>(); + + try { + inputStream = res.getAssets().open("appfilter.xml"); + XmlPullParserFactory factory = XmlPullParserFactory.newInstance(); + parser = factory.newPullParser(); + parser.setInput(inputStream, "UTF-8"); + } catch (Exception e) { + // Catch any exception since we want to fall back to parsing the xml/ + // resource in all cases + int resId = res.getIdentifier("appfilter", "xml", packageName); + if (resId != 0) { + parser = res.getXml(resId); + } + } + + if (parser != null) { + try { + loadResourcesFromXmlParser(parser, iconPackResources); + return iconPackResources; + } catch (XmlPullParserException e) { + e.printStackTrace(); + } catch (IOException e) { + e.printStackTrace(); + } finally { + // Cleanup resources + if (parser instanceof XmlResourceParser) { + ((XmlResourceParser) parser).close(); + } else if (inputStream != null) { + try { + inputStream.close(); + } catch (IOException e) { + } + } + } + } + + // Application uses a different theme format (most likely launcher pro) + int arrayId = res.getIdentifier("theme_iconpack", "array", packageName); + if (arrayId == 0) { + arrayId = res.getIdentifier("icon_pack", "array", packageName); + } + + if (arrayId != 0) { + String[] iconPack = res.getStringArray(arrayId); + ComponentName compName = null; + for (String entry : iconPack) { + + if (TextUtils.isEmpty(entry)) { + continue; + } + + String icon = entry; + entry = entry.replaceAll("_", "."); + + compName = new ComponentName(entry.toLowerCase(), ""); + iconPackResources.put(compName, icon); + + int activityIndex = entry.lastIndexOf("."); + if (activityIndex <= 0 || activityIndex == entry.length() - 1) { + continue; + } + + String iconPackage = entry.substring(0, activityIndex); + if (TextUtils.isEmpty(iconPackage)) { + continue; + } + + String iconActivity = entry.substring(activityIndex + 1); + if (TextUtils.isEmpty(iconActivity)) { + continue; + } + + // Store entries as lower case to ensure match + iconPackage = iconPackage.toLowerCase(); + iconActivity = iconActivity.toLowerCase(); + + iconActivity = iconPackage + "." + iconActivity; + compName = new ComponentName(iconPackage, iconActivity); + iconPackResources.put(compName, icon); + } + } + return iconPackResources; + } + + boolean isIconPackLoaded() { + return mLoadedIconPackResource != null && + mLoadedIconPackName != null && + mIconPackResourceMap != null; + } + + private int getResourceIdForDrawable(String resource) { + int resId = + mLoadedIconPackResource.getIdentifier(resource, "drawable",mLoadedIconPackName); + return resId; + } + + public int getResourceIdForActivityIcon(ActivityInfo info) { + if (!isIconPackLoaded()) { + return 0; + } + ComponentName compName = new ComponentName(info.packageName.toLowerCase(), + info.name.toLowerCase()); + String drawable = mIconPackResourceMap.get(compName); + if (drawable != null) { + int resId = getResourceIdForDrawable(drawable); + if (resId != 0) return resId; + } + + // Icon pack doesn't have an icon for the activity, fallback to package icon + compName = new ComponentName(info.packageName.toLowerCase(), ""); + drawable = mIconPackResourceMap.get(compName); + if (drawable == null) { + return 0; + } + return getResourceIdForDrawable(drawable); + } + + public int getResourceIdForApp(String pkgName) { + ActivityInfo info = new ActivityInfo(); + info.packageName = pkgName; + info.name = ""; + return getResourceIdForActivityIcon(info); + } + + public Drawable getDrawableForActivity(ActivityInfo info) { + int id = getResourceIdForActivityIcon(info); + if (id == 0) return null; + return mLoadedIconPackResource.getDrawable(id, null, false); + } + + public Drawable getDrawableForActivityWithDensity(ActivityInfo info, int density) { + int id = getResourceIdForActivityIcon(info); + if (id == 0) return null; + return mLoadedIconPackResource.getDrawableForDensity(id, density, null, false); + } + + public static boolean shouldComposeIcon(ComposedIconInfo iconInfo) { + return iconInfo != null && + (iconInfo.iconBacks != null || iconInfo.iconMask != 0 || + iconInfo.iconUpon != 0 || iconInfo.colorFilter != null); + } + + public static class IconCustomizer { + private static final Random sRandom = new Random(); + private static final IThemeService sThemeService; + + static { + sThemeService = IThemeService.Stub.asInterface( + ServiceManager.getService(Context.THEME_SERVICE)); + } + + public static Drawable getComposedIconDrawable(Drawable icon, Context context, + ComposedIconInfo iconInfo) { + final Resources res = context.getResources(); + return getComposedIconDrawable(icon, res, iconInfo); + } + + public static Drawable getComposedIconDrawable(Drawable icon, Resources res, + ComposedIconInfo iconInfo) { + if (iconInfo == null) return icon; + int back = 0; + if (iconInfo.iconBacks != null && iconInfo.iconBacks.length > 0) { + back = iconInfo.iconBacks[sRandom.nextInt(iconInfo.iconBacks.length)]; + } + Bitmap bmp = createIconBitmap(icon, res, back, iconInfo.iconMask, iconInfo.iconUpon, + iconInfo.iconScale, iconInfo.iconSize, iconInfo.colorFilter); + return bmp != null ? new BitmapDrawable(res, bmp): null; + } + + public static void getValue(Resources res, int resId, TypedValue outValue, + Drawable baseIcon) { + final String pkgName = res.getAssets().getAppName(); + TypedValue tempValue = new TypedValue(); + tempValue.setTo(outValue); + outValue.assetCookie = COMPOSED_ICON_COOKIE; + outValue.data = resId & (COMPOSED_ICON_COOKIE << 24 | 0x00ffffff); + outValue.string = getCachedIconPath(pkgName, resId, outValue.density); + + if (!(new File(outValue.string.toString()).exists())) { + // compose the icon and cache it + final ComposedIconInfo iconInfo = res.getComposedIconInfo(); + int back = 0; + if (iconInfo.iconBacks != null && iconInfo.iconBacks.length > 0) { + back = iconInfo.iconBacks[(outValue.string.hashCode() & 0x7fffffff) + % iconInfo.iconBacks.length]; + } + Bitmap bmp = createIconBitmap(baseIcon, res, back, iconInfo.iconMask, + iconInfo.iconUpon, iconInfo.iconScale, iconInfo.iconSize, + iconInfo.colorFilter); + if (!cacheComposedIcon(bmp, getCachedIconName(pkgName, resId, outValue.density))) { + Log.w(TAG, "Unable to cache icon " + outValue.string); + // restore the original TypedValue + outValue.setTo(tempValue); + } + } + } + + private static Bitmap createIconBitmap(Drawable icon, Resources res, int iconBack, + int iconMask, int iconUpon, float scale, int iconSize, float[] colorFilter) { + if (iconSize <= 0) return null; + + final Canvas canvas = new Canvas(); + canvas.setDrawFilter(new PaintFlagsDrawFilter(Paint.ANTI_ALIAS_FLAG, + Paint.FILTER_BITMAP_FLAG)); + + int width = 0, height = 0; + if (icon instanceof PaintDrawable) { + PaintDrawable painter = (PaintDrawable) icon; + painter.setIntrinsicWidth(iconSize); + painter.setIntrinsicHeight(iconSize); + + // A PaintDrawable does not have an exact size + width = iconSize; + height = iconSize; + } else if (icon instanceof BitmapDrawable) { + // Ensure the bitmap has a density. + BitmapDrawable bitmapDrawable = (BitmapDrawable) icon; + Bitmap bitmap = bitmapDrawable.getBitmap(); + if (bitmap.getDensity() == Bitmap.DENSITY_NONE) { + bitmapDrawable.setTargetDensity(res.getDisplayMetrics()); + } + canvas.setDensity(bitmap.getDensity()); + + // If the original size of the icon isn't greater + // than twice the size of recommended large icons + // respect the original size of the icon + // otherwise enormous icons can easily create + // OOM situations. + if ((bitmap.getWidth() < (iconSize * 2)) + && (bitmap.getHeight() < (iconSize * 2))) { + width = bitmap.getWidth(); + height = bitmap.getHeight(); + } else { + width = iconSize; + height = iconSize; + } + } else if (icon instanceof VectorDrawable) { + width = height = iconSize; + } + + if (width <= 0 || height <= 0) return null; + + Bitmap bitmap = Bitmap.createBitmap(width, height, + Bitmap.Config.ARGB_8888); + canvas.setBitmap(bitmap); + + // Scale the original + Rect oldBounds = new Rect(); + oldBounds.set(icon.getBounds()); + icon.setBounds(0, 0, width, height); + canvas.save(); + canvas.scale(scale, scale, width / 2, height / 2); + if (colorFilter != null) { + Paint p = null; + if (icon instanceof BitmapDrawable) { + p = ((BitmapDrawable) icon).getPaint(); + } else if (icon instanceof PaintDrawable) { + p = ((PaintDrawable) icon).getPaint(); + } + if (p != null) p.setColorFilter(new ColorMatrixColorFilter(colorFilter)); + } + icon.draw(canvas); + canvas.restore(); + + // Mask off the original if iconMask is not null + if (iconMask != 0) { + Drawable mask = res.getDrawable(iconMask); + if (mask != null) { + mask.setBounds(icon.getBounds()); + ((BitmapDrawable) mask).getPaint().setXfermode( + new PorterDuffXfermode(PorterDuff.Mode.DST_OUT)); + mask.draw(canvas); + } + } + // Draw the iconBacks if not null and then the original (scaled and masked) icon on top + if (iconBack != 0) { + Drawable back = res.getDrawable(iconBack); + if (back != null) { + back.setBounds(icon.getBounds()); + ((BitmapDrawable) back).getPaint().setXfermode( + new PorterDuffXfermode(PorterDuff.Mode.DST_OVER)); + back.draw(canvas); + } + } + // Finally draw the foreground if one was supplied + if (iconUpon != 0) { + Drawable upon = res.getDrawable(iconUpon); + if (upon != null) { + upon.setBounds(icon.getBounds()); + upon.draw(canvas); + } + } + icon.setBounds(oldBounds); + bitmap.setDensity(canvas.getDensity()); + + return bitmap; + } + + private static boolean cacheComposedIcon(Bitmap bmp, String path) { + try { + return sThemeService.cacheComposedIcon(bmp, path); + } catch (RemoteException e) { + Log.e(TAG, "Unable to cache icon.", e); + } + + return false; + } + + private static String getCachedIconPath(String pkgName, int resId, int density) { + return String.format("%s/%s", ThemeUtils.SYSTEM_THEME_ICON_CACHE_DIR, + getCachedIconName(pkgName, resId, density)); + } + + private static String getCachedIconName(String pkgName, int resId, int density) { + return String.format("%s_%08x_%d.png", pkgName, resId, density); + } + } + + public static class ColorFilterUtils { + private static final String TAG_FILTER = "filter"; + private static final String FILTER_HUE = "hue"; + private static final String FILTER_SATURATION = "saturation"; + private static final String FILTER_INVERT = "invert"; + private static final String FILTER_BRIGHTNESS = "brightness"; + private static final String FILTER_CONTRAST = "contrast"; + private static final String FILTER_ALPHA = "alpha"; + private static final String FILTER_TINT = "tint"; + + private static final int MIN_HUE = -180; + private static final int MAX_HUE = 180; + private static final int MIN_SATURATION = 0; + private static final int MAX_SATURATION = 200; + private static final int MIN_BRIGHTNESS = 0; + private static final int MAX_BRIGHTNESS = 200; + private static final int MIN_CONTRAST = -100; + private static final int MAX_CONTRAST = 100; + private static final int MIN_ALPHA = 0; + private static final int MAX_ALPHA = 100; + + public static boolean parseIconFilter(XmlPullParser parser, Builder builder) + throws IOException, XmlPullParserException { + String tag = parser.getName(); + if (!TAG_FILTER.equals(tag)) return false; + + int attrCount = parser.getAttributeCount(); + String attrName; + String attr = null; + int intValue; + while (attrCount-- > 0) { + attrName = parser.getAttributeName(attrCount); + if (attrName.equals("name")) { + attr = parser.getAttributeValue(attrCount); + } + } + String content = parser.nextText(); + if (attr != null && content != null && content.length() > 0) { + content = content.trim(); + if (FILTER_HUE.equalsIgnoreCase(attr)) { + intValue = clampValue(getInt(content, 0),MIN_HUE, MAX_HUE); + builder.hue(intValue); + } else if (FILTER_SATURATION.equalsIgnoreCase(attr)) { + intValue = clampValue(getInt(content, 100), + MIN_SATURATION, MAX_SATURATION); + builder.saturate(intValue); + } else if (FILTER_INVERT.equalsIgnoreCase(attr)) { + if ("true".equalsIgnoreCase(content)) { + builder.invertColors(); + } + } else if (FILTER_BRIGHTNESS.equalsIgnoreCase(attr)) { + intValue = clampValue(getInt(content, 100), + MIN_BRIGHTNESS, MAX_BRIGHTNESS); + builder.brightness(intValue); + } else if (FILTER_CONTRAST.equalsIgnoreCase(attr)) { + intValue = clampValue(getInt(content, 0), + MIN_CONTRAST, MAX_CONTRAST); + builder.contrast(intValue); + } else if (FILTER_ALPHA.equalsIgnoreCase(attr)) { + intValue = clampValue(getInt(content, 100), MIN_ALPHA, MAX_ALPHA); + builder.alpha(intValue); + } else if (FILTER_TINT.equalsIgnoreCase(attr)) { + try { + intValue = Color.parseColor(content); + builder.tint(intValue); + } catch (IllegalArgumentException e) { + Log.w(TAG, "Cannot apply tint, invalid argument: " + content); + } + } + } + return true; + } + + private static int getInt(String value, int defaultValue) { + try { + return Integer.valueOf(value); + } catch (NumberFormatException e) { + return defaultValue; + } + } + + private static int clampValue(int value, int min, int max) { + return Math.min(max, Math.max(min, value)); + } + + /** + * See the following links for reference + * http://groups.google.com/group/android-developers/browse_thread/thread/9e215c83c3819953 + * http://gskinner.com/blog/archives/2007/12/colormatrix_cla.html + * @param value + */ + public static ColorMatrix adjustHue(float value) { + ColorMatrix cm = new ColorMatrix(); + value = value / 180 * (float) Math.PI; + if (value != 0) { + float cosVal = (float) Math.cos(value); + float sinVal = (float) Math.sin(value); + float lumR = 0.213f; + float lumG = 0.715f; + float lumB = 0.072f; + float[] mat = new float[]{ + lumR + cosVal * (1 - lumR) + sinVal * (-lumR), + lumG + cosVal * (-lumG) + sinVal * (-lumG), + lumB + cosVal * (-lumB) + sinVal * (1 - lumB), 0, 0, + lumR + cosVal * (-lumR) + sinVal * (0.143f), + lumG + cosVal * (1 - lumG) + sinVal * (0.140f), + lumB + cosVal * (-lumB) + sinVal * (-0.283f), 0, 0, + lumR + cosVal * (-lumR) + sinVal * (-(1 - lumR)), + lumG + cosVal * (-lumG) + sinVal * (lumG), + lumB + cosVal * (1 - lumB) + sinVal * (lumB), 0, 0, + 0, 0, 0, 1, 0, + 0, 0, 0, 0, 1}; + cm.set(mat); + } + return cm; + } + + public static ColorMatrix adjustSaturation(float saturation) { + saturation = saturation / 100; + ColorMatrix cm = new ColorMatrix(); + cm.setSaturation(saturation); + + return cm; + } + + public static ColorMatrix invertColors() { + float[] matrix = { + -1, 0, 0, 0, 255, //red + 0, -1, 0, 0, 255, //green + 0, 0, -1, 0, 255, //blue + 0, 0, 0, 1, 0 //alpha + }; + + return new ColorMatrix(matrix); + } + + public static ColorMatrix adjustBrightness(float brightness) { + brightness = brightness / 100; + ColorMatrix cm = new ColorMatrix(); + cm.setScale(brightness, brightness, brightness, 1); + + return cm; + } + + public static ColorMatrix adjustContrast(float contrast) { + contrast = contrast / 100 + 1; + float o = (-0.5f * contrast + 0.5f) * 255; + float[] matrix = { + contrast, 0, 0, 0, o, //red + 0, contrast, 0, 0, o, //green + 0, 0, contrast, 0, o, //blue + 0, 0, 0, 1, 0 //alpha + }; + + return new ColorMatrix(matrix); + } + + public static ColorMatrix adjustAlpha(float alpha) { + alpha = alpha / 100; + ColorMatrix cm = new ColorMatrix(); + cm.setScale(1, 1, 1, alpha); + + return cm; + } + + public static ColorMatrix applyTint(int color) { + float alpha = Color.alpha(color) / 255f; + float red = Color.red(color) * alpha; + float green = Color.green(color) * alpha; + float blue = Color.blue(color) * alpha; + + float[] matrix = { + 1, 0, 0, 0, red, //red + 0, 1, 0, 0, green, //green + 0, 0, 1, 0, blue, //blue + 0, 0, 0, 1, 0 //alpha + }; + + return new ColorMatrix(matrix); + } + + public static class Builder { + private List<ColorMatrix> mMatrixList; + + public Builder() { + mMatrixList = new ArrayList<ColorMatrix>(); + } + + public Builder hue(float value) { + mMatrixList.add(adjustHue(value)); + return this; + } + + public Builder saturate(float saturation) { + mMatrixList.add(adjustSaturation(saturation)); + return this; + } + + public Builder brightness(float brightness) { + mMatrixList.add(adjustBrightness(brightness)); + return this; + } + + public Builder contrast(float contrast) { + mMatrixList.add(adjustContrast(contrast)); + return this; + } + + public Builder alpha(float alpha) { + mMatrixList.add(adjustAlpha(alpha)); + return this; + } + + public Builder invertColors() { + mMatrixList.add(ColorFilterUtils.invertColors()); + return this; + } + + public Builder tint(int color) { + mMatrixList.add(applyTint(color)); + return this; + } + + public ColorMatrix build() { + if (mMatrixList == null || mMatrixList.size() == 0) return null; + + ColorMatrix colorMatrix = new ColorMatrix(); + for (ColorMatrix cm : mMatrixList) { + colorMatrix.postConcat(cm); + } + return colorMatrix; + } + } + } +} |