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.Canvas; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.graphics.Paint; 21d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunneimport android.graphics.Path; 22d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunneimport android.graphics.Path.Direction; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Parcel; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.Layout; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.ParcelableSpan; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.Spanned; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.text.TextUtils; 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class BulletSpan implements LeadingMarginSpan, ParcelableSpan { 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mGapWidth; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final boolean mWantColor; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final int mColor; 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int BULLET_RADIUS = 3; 35d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne private static Path sBulletPath = null; 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int STANDARD_GAP_WIDTH = 2; 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public BulletSpan() { 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGapWidth = STANDARD_GAP_WIDTH; 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWantColor = false; 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColor = 0; 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public BulletSpan(int gapWidth) { 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGapWidth = gapWidth; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWantColor = false; 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColor = 0; 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public BulletSpan(int gapWidth, int color) { 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGapWidth = gapWidth; 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWantColor = true; 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColor = color; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public BulletSpan(Parcel src) { 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mGapWidth = src.readInt(); 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mWantColor = src.readInt() != 0; 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mColor = src.readInt(); 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 61d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getSpanTypeId() { 63a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette return getSpanTypeIdInternal(); 64a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette } 65a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette 66a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette /** @hide */ 67a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette public int getSpanTypeIdInternal() { 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return TextUtils.BULLET_SPAN; 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 70d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int describeContents() { 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 0; 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void writeToParcel(Parcel dest, int flags) { 76a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette writeToParcelInternal(dest, flags); 77a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette } 78a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette 79a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette /** @hide */ 80a70d4a90a029910f788c3e7f8715cf3b842b1e2bAlan Viverette public void writeToParcelInternal(Parcel dest, int flags) { 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dest.writeInt(mGapWidth); 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dest.writeInt(mWantColor ? 1 : 0); 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project dest.writeInt(mColor); 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public int getLeadingMargin(boolean first) { 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return 2 * BULLET_RADIUS + mGapWidth; 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void drawLeadingMargin(Canvas c, Paint p, int x, int dir, 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int top, int baseline, int bottom, 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project CharSequence text, int start, int end, 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean first, Layout l) { 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (((Spanned) text).getSpanStart(this) == start) { 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Paint.Style style = p.getStyle(); 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int oldcolor = 0; 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWantColor) { 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project oldcolor = p.getColor(); 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setColor(mColor); 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setStyle(Paint.Style.FILL); 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 105d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne if (c.isHardwareAccelerated()) { 106d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne if (sBulletPath == null) { 107d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne sBulletPath = new Path(); 108d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne // Bullet is slightly better to avoid aliasing artifacts on mdpi devices. 109d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne sBulletPath.addCircle(0.0f, 0.0f, 1.2f * BULLET_RADIUS, Direction.CW); 110d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne } 111d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne 112d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne c.save(); 113d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne c.translate(x + dir * BULLET_RADIUS, (top + bottom) / 2.0f); 114d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne c.drawPath(sBulletPath, p); 115d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne c.restore(); 116d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne } else { 117d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne c.drawCircle(x + dir * BULLET_RADIUS, (top + bottom) / 2.0f, BULLET_RADIUS, p); 118d040f95190a3dd3b1ae925917eba7086c8ce563eGilles Debunne } 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mWantColor) { 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setColor(oldcolor); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project p.setStyle(style); 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 128