Alan Viverette | 3da604b | 2020-06-10 18:34:39 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 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 | |
| 17 | package com.android.photos.views; |
| 18 | |
| 19 | import android.annotation.SuppressLint; |
| 20 | import android.annotation.TargetApi; |
| 21 | import android.content.Context; |
| 22 | import android.graphics.Bitmap; |
| 23 | import android.graphics.Canvas; |
| 24 | import android.graphics.Color; |
| 25 | import android.graphics.Matrix; |
| 26 | import android.graphics.Paint; |
| 27 | import android.graphics.Paint.Align; |
| 28 | import android.graphics.RectF; |
| 29 | import android.opengl.GLSurfaceView; |
| 30 | import android.opengl.GLSurfaceView.Renderer; |
| 31 | import android.os.Build; |
| 32 | import android.util.AttributeSet; |
| 33 | import android.view.Choreographer; |
| 34 | import android.view.Choreographer.FrameCallback; |
| 35 | import android.view.View; |
| 36 | import android.widget.FrameLayout; |
| 37 | |
| 38 | import com.android.gallery3d.glrenderer.BasicTexture; |
| 39 | import com.android.gallery3d.glrenderer.GLES20Canvas; |
| 40 | import com.android.photos.views.TiledImageRenderer.TileSource; |
| 41 | |
| 42 | import javax.microedition.khronos.egl.EGLConfig; |
| 43 | import javax.microedition.khronos.opengles.GL10; |
| 44 | |
| 45 | /** |
| 46 | * Shows an image using {@link TiledImageRenderer} using either {@link GLSurfaceView} |
| 47 | * or {@link BlockingGLTextureView}. |
| 48 | */ |
| 49 | public class TiledImageView extends FrameLayout { |
| 50 | |
| 51 | private static final boolean USE_TEXTURE_VIEW = false; |
| 52 | private static final boolean IS_SUPPORTED = |
| 53 | Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; |
| 54 | private static final boolean USE_CHOREOGRAPHER = |
| 55 | Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN; |
| 56 | |
| 57 | private BlockingGLTextureView mTextureView; |
| 58 | private GLSurfaceView mGLSurfaceView; |
| 59 | private boolean mInvalPending = false; |
| 60 | private FrameCallback mFrameCallback; |
| 61 | |
| 62 | protected static class ImageRendererWrapper { |
| 63 | // Guarded by locks |
| 64 | public float scale; |
| 65 | public int centerX, centerY; |
| 66 | public int rotation; |
| 67 | public TileSource source; |
| 68 | Runnable isReadyCallback; |
| 69 | |
| 70 | // GL thread only |
| 71 | TiledImageRenderer image; |
| 72 | } |
| 73 | |
| 74 | private float[] mValues = new float[9]; |
| 75 | |
| 76 | // ------------------------- |
| 77 | // Guarded by mLock |
| 78 | // ------------------------- |
| 79 | protected Object mLock = new Object(); |
| 80 | protected ImageRendererWrapper mRenderer; |
| 81 | |
| 82 | public static boolean isTilingSupported() { |
| 83 | return IS_SUPPORTED; |
| 84 | } |
| 85 | |
| 86 | public TiledImageView(Context context) { |
| 87 | this(context, null); |
| 88 | } |
| 89 | |
| 90 | public TiledImageView(Context context, AttributeSet attrs) { |
| 91 | super(context, attrs); |
| 92 | if (!IS_SUPPORTED) { |
| 93 | return; |
| 94 | } |
| 95 | |
| 96 | mRenderer = new ImageRendererWrapper(); |
| 97 | mRenderer.image = new TiledImageRenderer(this); |
| 98 | View view; |
| 99 | if (USE_TEXTURE_VIEW) { |
| 100 | mTextureView = new BlockingGLTextureView(context); |
| 101 | mTextureView.setRenderer(new TileRenderer()); |
| 102 | view = mTextureView; |
| 103 | } else { |
| 104 | mGLSurfaceView = new GLSurfaceView(context); |
| 105 | mGLSurfaceView.setEGLContextClientVersion(2); |
| 106 | mGLSurfaceView.setRenderer(new TileRenderer()); |
| 107 | mGLSurfaceView.setRenderMode(GLSurfaceView.RENDERMODE_WHEN_DIRTY); |
| 108 | view = mGLSurfaceView; |
| 109 | } |
| 110 | addView(view, new LayoutParams( |
| 111 | LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)); |
| 112 | //setTileSource(new ColoredTiles()); |
| 113 | } |
| 114 | |
| 115 | public void destroy() { |
| 116 | if (!IS_SUPPORTED) { |
| 117 | return; |
| 118 | } |
| 119 | if (USE_TEXTURE_VIEW) { |
| 120 | mTextureView.destroy(); |
| 121 | } else { |
| 122 | mGLSurfaceView.queueEvent(mFreeTextures); |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | private Runnable mFreeTextures = new Runnable() { |
| 127 | |
| 128 | @Override |
| 129 | public void run() { |
| 130 | mRenderer.image.freeTextures(); |
| 131 | } |
| 132 | }; |
| 133 | |
| 134 | public void onPause() { |
| 135 | if (!IS_SUPPORTED) { |
| 136 | return; |
| 137 | } |
| 138 | if (!USE_TEXTURE_VIEW) { |
| 139 | mGLSurfaceView.onPause(); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | public void onResume() { |
| 144 | if (!IS_SUPPORTED) { |
| 145 | return; |
| 146 | } |
| 147 | if (!USE_TEXTURE_VIEW) { |
| 148 | mGLSurfaceView.onResume(); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | public void setTileSource(TileSource source, Runnable isReadyCallback) { |
| 153 | if (!IS_SUPPORTED) { |
| 154 | return; |
| 155 | } |
| 156 | synchronized (mLock) { |
| 157 | mRenderer.source = source; |
| 158 | mRenderer.isReadyCallback = isReadyCallback; |
| 159 | mRenderer.centerX = source != null ? source.getImageWidth() / 2 : 0; |
| 160 | mRenderer.centerY = source != null ? source.getImageHeight() / 2 : 0; |
| 161 | mRenderer.rotation = source != null ? source.getRotation() : 0; |
| 162 | mRenderer.scale = 0; |
| 163 | updateScaleIfNecessaryLocked(mRenderer); |
| 164 | } |
| 165 | invalidate(); |
| 166 | } |
| 167 | |
| 168 | @Override |
| 169 | protected void onLayout(boolean changed, int left, int top, int right, |
| 170 | int bottom) { |
| 171 | super.onLayout(changed, left, top, right, bottom); |
| 172 | if (!IS_SUPPORTED) { |
| 173 | return; |
| 174 | } |
| 175 | synchronized (mLock) { |
| 176 | updateScaleIfNecessaryLocked(mRenderer); |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | private void updateScaleIfNecessaryLocked(ImageRendererWrapper renderer) { |
| 181 | if (renderer == null || renderer.source == null |
| 182 | || renderer.scale > 0 || getWidth() == 0) { |
| 183 | return; |
| 184 | } |
| 185 | renderer.scale = Math.min( |
| 186 | (float) getWidth() / (float) renderer.source.getImageWidth(), |
| 187 | (float) getHeight() / (float) renderer.source.getImageHeight()); |
| 188 | } |
| 189 | |
| 190 | @Override |
| 191 | protected void dispatchDraw(Canvas canvas) { |
| 192 | if (!IS_SUPPORTED) { |
| 193 | return; |
| 194 | } |
| 195 | if (USE_TEXTURE_VIEW) { |
| 196 | mTextureView.render(); |
| 197 | } |
| 198 | super.dispatchDraw(canvas); |
| 199 | } |
| 200 | |
| 201 | @SuppressLint("NewApi") |
| 202 | @Override |
| 203 | public void setTranslationX(float translationX) { |
| 204 | if (!IS_SUPPORTED) { |
| 205 | return; |
| 206 | } |
| 207 | super.setTranslationX(translationX); |
| 208 | } |
| 209 | |
| 210 | @Override |
| 211 | public void invalidate() { |
| 212 | if (!IS_SUPPORTED) { |
| 213 | return; |
| 214 | } |
| 215 | if (USE_TEXTURE_VIEW) { |
| 216 | super.invalidate(); |
| 217 | mTextureView.invalidate(); |
| 218 | } else { |
| 219 | if (USE_CHOREOGRAPHER) { |
| 220 | invalOnVsync(); |
| 221 | } else { |
| 222 | mGLSurfaceView.requestRender(); |
| 223 | } |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | @TargetApi(Build.VERSION_CODES.JELLY_BEAN) |
| 228 | private void invalOnVsync() { |
| 229 | if (!mInvalPending) { |
| 230 | mInvalPending = true; |
| 231 | if (mFrameCallback == null) { |
| 232 | mFrameCallback = new FrameCallback() { |
| 233 | @Override |
| 234 | public void doFrame(long frameTimeNanos) { |
| 235 | mInvalPending = false; |
| 236 | mGLSurfaceView.requestRender(); |
| 237 | } |
| 238 | }; |
| 239 | } |
| 240 | Choreographer.getInstance().postFrameCallback(mFrameCallback); |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | private RectF mTempRectF = new RectF(); |
| 245 | public void positionFromMatrix(Matrix matrix) { |
| 246 | if (!IS_SUPPORTED) { |
| 247 | return; |
| 248 | } |
| 249 | if (mRenderer.source != null) { |
| 250 | final int rotation = mRenderer.source.getRotation(); |
| 251 | final boolean swap = !(rotation % 180 == 0); |
| 252 | final int width = swap ? mRenderer.source.getImageHeight() |
| 253 | : mRenderer.source.getImageWidth(); |
| 254 | final int height = swap ? mRenderer.source.getImageWidth() |
| 255 | : mRenderer.source.getImageHeight(); |
| 256 | mTempRectF.set(0, 0, width, height); |
| 257 | matrix.mapRect(mTempRectF); |
| 258 | matrix.getValues(mValues); |
| 259 | int cx = width / 2; |
| 260 | int cy = height / 2; |
| 261 | float scale = mValues[Matrix.MSCALE_X]; |
| 262 | int xoffset = Math.round((getWidth() - mTempRectF.width()) / 2 / scale); |
| 263 | int yoffset = Math.round((getHeight() - mTempRectF.height()) / 2 / scale); |
| 264 | if (rotation == 90 || rotation == 180) { |
| 265 | cx += (mTempRectF.left / scale) - xoffset; |
| 266 | } else { |
| 267 | cx -= (mTempRectF.left / scale) - xoffset; |
| 268 | } |
| 269 | if (rotation == 180 || rotation == 270) { |
| 270 | cy += (mTempRectF.top / scale) - yoffset; |
| 271 | } else { |
| 272 | cy -= (mTempRectF.top / scale) - yoffset; |
| 273 | } |
| 274 | mRenderer.scale = scale; |
| 275 | mRenderer.centerX = swap ? cy : cx; |
| 276 | mRenderer.centerY = swap ? cx : cy; |
| 277 | invalidate(); |
| 278 | } |
| 279 | } |
| 280 | |
| 281 | private class TileRenderer implements Renderer { |
| 282 | |
| 283 | private GLES20Canvas mCanvas; |
| 284 | |
| 285 | @Override |
| 286 | public void onSurfaceCreated(GL10 gl, EGLConfig config) { |
| 287 | mCanvas = new GLES20Canvas(); |
| 288 | BasicTexture.invalidateAllTextures(); |
| 289 | mRenderer.image.setModel(mRenderer.source, mRenderer.rotation); |
| 290 | } |
| 291 | |
| 292 | @Override |
| 293 | public void onSurfaceChanged(GL10 gl, int width, int height) { |
| 294 | mCanvas.setSize(width, height); |
| 295 | mRenderer.image.setViewSize(width, height); |
| 296 | } |
| 297 | |
| 298 | @Override |
| 299 | public void onDrawFrame(GL10 gl) { |
| 300 | mCanvas.clearBuffer(); |
| 301 | Runnable readyCallback; |
| 302 | synchronized (mLock) { |
| 303 | readyCallback = mRenderer.isReadyCallback; |
| 304 | mRenderer.image.setModel(mRenderer.source, mRenderer.rotation); |
| 305 | mRenderer.image.setPosition(mRenderer.centerX, mRenderer.centerY, |
| 306 | mRenderer.scale); |
| 307 | } |
| 308 | boolean complete = mRenderer.image.draw(mCanvas); |
| 309 | if (complete && readyCallback != null) { |
| 310 | synchronized (mLock) { |
| 311 | // Make sure we don't trample on a newly set callback/source |
| 312 | // if it changed while we were rendering |
| 313 | if (mRenderer.isReadyCallback == readyCallback) { |
| 314 | mRenderer.isReadyCallback = null; |
| 315 | } |
| 316 | } |
| 317 | if (readyCallback != null) { |
| 318 | post(readyCallback); |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | |
| 323 | } |
| 324 | |
| 325 | @SuppressWarnings("unused") |
| 326 | private static class ColoredTiles implements TileSource { |
| 327 | private static final int[] COLORS = new int[] { |
| 328 | Color.RED, |
| 329 | Color.BLUE, |
| 330 | Color.YELLOW, |
| 331 | Color.GREEN, |
| 332 | Color.CYAN, |
| 333 | Color.MAGENTA, |
| 334 | Color.WHITE, |
| 335 | }; |
| 336 | |
| 337 | private Paint mPaint = new Paint(); |
| 338 | private Canvas mCanvas = new Canvas(); |
| 339 | |
| 340 | @Override |
| 341 | public int getTileSize() { |
| 342 | return 256; |
| 343 | } |
| 344 | |
| 345 | @Override |
| 346 | public int getImageWidth() { |
| 347 | return 16384; |
| 348 | } |
| 349 | |
| 350 | @Override |
| 351 | public int getImageHeight() { |
| 352 | return 8192; |
| 353 | } |
| 354 | |
| 355 | @Override |
| 356 | public int getRotation() { |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | @Override |
| 361 | public Bitmap getTile(int level, int x, int y, Bitmap bitmap) { |
| 362 | int tileSize = getTileSize(); |
| 363 | if (bitmap == null) { |
| 364 | bitmap = Bitmap.createBitmap(tileSize, tileSize, |
| 365 | Bitmap.Config.ARGB_8888); |
| 366 | } |
| 367 | mCanvas.setBitmap(bitmap); |
| 368 | mCanvas.drawColor(COLORS[level]); |
| 369 | mPaint.setColor(Color.BLACK); |
| 370 | mPaint.setTextSize(20); |
| 371 | mPaint.setTextAlign(Align.CENTER); |
| 372 | mCanvas.drawText(x + "x" + y, 128, 128, mPaint); |
| 373 | tileSize <<= level; |
| 374 | x /= tileSize; |
| 375 | y /= tileSize; |
| 376 | mCanvas.drawText(x + "x" + y + " @ " + level, 128, 30, mPaint); |
| 377 | mCanvas.setBitmap(null); |
| 378 | return bitmap; |
| 379 | } |
| 380 | |
| 381 | @Override |
| 382 | public BasicTexture getPreview() { |
| 383 | return null; |
| 384 | } |
| 385 | } |
| 386 | } |