1/* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.layoutlib.bridge.android.graphics; 18 19import android.graphics.Bitmap; 20import android.graphics.Canvas; 21import android.graphics.Matrix; 22import android.graphics.NinePatch; 23import android.graphics.Paint; 24import android.graphics.Path; 25import android.graphics.Picture; 26import android.graphics.PorterDuff.Mode; 27import android.graphics.Rect; 28import android.graphics.RectF; 29 30/** 31 * Canvas implementation that does not do any rendering 32 */ 33public class NopCanvas extends Canvas { 34 private boolean mIsInitialized = false; 35 36 public NopCanvas() { 37 super(); 38 mIsInitialized = true; 39 } 40 41 @Override 42 public boolean isHardwareAccelerated() { 43 // We return true the first time so there are no allocations for the software renderer in 44 // the constructor 45 return !mIsInitialized; 46 } 47 48 @Override 49 public int save() { 50 return 0; 51 } 52 53 @Override 54 public int save(int saveFlags) { 55 return 0; 56 } 57 58 @Override 59 public int saveLayer(RectF bounds, Paint paint, int saveFlags) { 60 return 0; 61 } 62 63 @Override 64 public int saveLayer(RectF bounds, Paint paint) { 65 return 0; 66 } 67 68 @Override 69 public int saveLayer(float left, float top, float right, float bottom, Paint paint, 70 int saveFlags) { 71 return 0; 72 } 73 74 @Override 75 public int saveLayer(float left, float top, float right, float bottom, Paint paint) { 76 return 0; 77 } 78 79 @Override 80 public int saveLayerAlpha(RectF bounds, int alpha, int saveFlags) { 81 return 0; 82 } 83 84 @Override 85 public int saveLayerAlpha(RectF bounds, int alpha) { 86 return 0; 87 } 88 89 @Override 90 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha, 91 int saveFlags) { 92 return 0; 93 } 94 95 @Override 96 public int saveLayerAlpha(float left, float top, float right, float bottom, int alpha) { 97 return 0; 98 } 99 100 @Override 101 public void restore() { 102 } 103 104 @Override 105 public int getSaveCount() { 106 return 0; 107 } 108 109 @Override 110 public void restoreToCount(int saveCount) { 111 } 112 113 @Override 114 public void drawRGB(int r, int g, int b) { 115 } 116 117 @Override 118 public void drawARGB(int a, int r, int g, int b) { 119 } 120 121 @Override 122 public void drawColor(int color) { 123 } 124 125 @Override 126 public void drawColor(int color, Mode mode) { 127 } 128 129 @Override 130 public void drawPaint(Paint paint) { 131 } 132 133 @Override 134 public void drawPoints(float[] pts, int offset, int count, Paint paint) { 135 } 136 137 @Override 138 public void drawPoints(float[] pts, Paint paint) { 139 } 140 141 @Override 142 public void drawPoint(float x, float y, Paint paint) { 143 } 144 145 @Override 146 public void drawLine(float startX, float startY, float stopX, float stopY, Paint paint) { 147 } 148 149 @Override 150 public void drawLines(float[] pts, int offset, int count, Paint paint) { 151 } 152 153 @Override 154 public void drawLines(float[] pts, Paint paint) { 155 } 156 157 @Override 158 public void drawRect(RectF rect, Paint paint) { 159 } 160 161 @Override 162 public void drawRect(Rect r, Paint paint) { 163 } 164 165 @Override 166 public void drawRect(float left, float top, float right, float bottom, Paint paint) { 167 } 168 169 @Override 170 public void drawOval(RectF oval, Paint paint) { 171 } 172 173 @Override 174 public void drawOval(float left, float top, float right, float bottom, Paint paint) { 175 } 176 177 @Override 178 public void drawCircle(float cx, float cy, float radius, Paint paint) { 179 } 180 181 @Override 182 public void drawArc(RectF oval, float startAngle, float sweepAngle, boolean useCenter, 183 Paint paint) { 184 } 185 186 @Override 187 public void drawArc(float left, float top, float right, float bottom, float startAngle, 188 float sweepAngle, boolean useCenter, Paint paint) { 189 } 190 191 @Override 192 public void drawRoundRect(RectF rect, float rx, float ry, Paint paint) { 193 } 194 195 @Override 196 public void drawRoundRect(float left, float top, float right, float bottom, float rx, float ry, 197 Paint paint) { 198 } 199 200 @Override 201 public void drawPath(Path path, Paint paint) { 202 } 203 204 @Override 205 protected void throwIfCannotDraw(Bitmap bitmap) { 206 } 207 208 @Override 209 public void drawPatch(NinePatch patch, Rect dst, Paint paint) { 210 } 211 212 @Override 213 public void drawPatch(NinePatch patch, RectF dst, Paint paint) { 214 } 215 216 @Override 217 public void drawBitmap(Bitmap bitmap, float left, float top, Paint paint) { 218 } 219 220 @Override 221 public void drawBitmap(Bitmap bitmap, Rect src, RectF dst, Paint paint) { 222 } 223 224 @Override 225 public void drawBitmap(Bitmap bitmap, Rect src, Rect dst, Paint paint) { 226 } 227 228 @Override 229 public void drawBitmap(int[] colors, int offset, int stride, float x, float y, int width, 230 int height, boolean hasAlpha, Paint paint) { 231 } 232 233 @Override 234 public void drawBitmap(int[] colors, int offset, int stride, int x, int y, int width, 235 int height, boolean hasAlpha, Paint paint) { 236 } 237 238 @Override 239 public void drawBitmap(Bitmap bitmap, Matrix matrix, Paint paint) { 240 } 241 242 @Override 243 public void drawBitmapMesh(Bitmap bitmap, int meshWidth, int meshHeight, float[] verts, 244 int vertOffset, int[] colors, int colorOffset, Paint paint) { 245 } 246 247 @Override 248 public void drawVertices(VertexMode mode, int vertexCount, float[] verts, int vertOffset, 249 float[] texs, int texOffset, int[] colors, int colorOffset, short[] indices, 250 int indexOffset, int indexCount, Paint paint) { 251 } 252 253 @Override 254 public void drawText(char[] text, int index, int count, float x, float y, Paint paint) { 255 } 256 257 @Override 258 public void drawText(String text, float x, float y, Paint paint) { 259 } 260 261 @Override 262 public void drawText(String text, int start, int end, float x, float y, Paint paint) { 263 } 264 265 @Override 266 public void drawText(CharSequence text, int start, int end, float x, float y, Paint paint) { 267 } 268 269 @Override 270 public void drawTextRun(char[] text, int index, int count, int contextIndex, int contextCount, 271 float x, float y, boolean isRtl, Paint paint) { 272 } 273 274 @Override 275 public void drawTextRun(CharSequence text, int start, int end, int contextStart, int contextEnd, 276 float x, float y, boolean isRtl, Paint paint) { 277 } 278 279 @Override 280 public void drawPosText(char[] text, int index, int count, float[] pos, Paint paint) { 281 } 282 283 @Override 284 public void drawPosText(String text, float[] pos, Paint paint) { 285 } 286 287 @Override 288 public void drawTextOnPath(char[] text, int index, int count, Path path, float hOffset, 289 float vOffset, Paint paint) { 290 } 291 292 @Override 293 public void drawTextOnPath(String text, Path path, float hOffset, float vOffset, Paint paint) { 294 } 295 296 @Override 297 public void drawPicture(Picture picture) { 298 } 299 300 @Override 301 public void drawPicture(Picture picture, RectF dst) { 302 } 303 304 @Override 305 public void drawPicture(Picture picture, Rect dst) { 306 } 307} 308