19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2006 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.text.style; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Paint; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Typeface; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcel; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.ParcelableSpan; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.TextPaint; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.TextUtils; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Describes a style in a span. 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Note that styles are cumulative -- if both bold and italic are set in 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * separate spans, or if the base style is bold and a span calls for italic, 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you get bold italic. You can't turn off a style from the base style. 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class StyleSpan extends MetricAffectingSpan implements ParcelableSpan { 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 368a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock private final int mStyle; 378a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock 388a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock /** 398a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock * 408a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock * @param style An integer constant describing the style for this span. Examples 418a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock * include bold, italic, and normal. Values are constants defined 428a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock * in {@link android.graphics.Typeface}. 438a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock */ 448a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock public StyleSpan(int style) { 458a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock mStyle = style; 468a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock } 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public StyleSpan(Parcel src) { 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mStyle = src.readInt(); 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSpanTypeId() { 53a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette return getSpanTypeIdInternal(); 54a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette } 55a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette 56a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette /** @hide */ 57a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette public int getSpanTypeIdInternal() { 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return TextUtils.STYLE_SPAN; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel dest, int flags) { 66a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette writeToParcelInternal(dest, flags); 67a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette } 68a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette 69a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette /** @hide */ 70a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette public void writeToParcelInternal(Parcel dest, int flags) { 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dest.writeInt(mStyle); 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 748a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock /** 758a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock * Returns the style constant defined in {@link android.graphics.Typeface}. 768a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock */ 778a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock public int getStyle() { 788a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock return mStyle; 798a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock } 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 818a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock @Override 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void updateDrawState(TextPaint ds) { 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project apply(ds, mStyle); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 868a985d24ce9a38f40ed88fecbdcd0e75e3a68f44John Spurlock @Override 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void updateMeasureState(TextPaint paint) { 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project apply(paint, mStyle); 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static void apply(Paint paint, int style) { 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldStyle; 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Typeface old = paint.getTypeface(); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (old == null) { 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldStyle = 0; 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldStyle = old.getStyle(); 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int want = oldStyle | style; 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Typeface tf; 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (old == null) { 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tf = Typeface.defaultFromStyle(want); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project tf = Typeface.create(old, want); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int fake = want & ~tf.getStyle(); 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((fake & Typeface.BOLD) != 0) { 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setFakeBoldText(true); 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if ((fake & Typeface.ITALIC) != 0) { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setTextSkewX(-0.25f); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project paint.setTypeface(tf); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 123