1 /* 2 * Copyright (C) 2010 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.layoutlib.bridge.impl; 18 19 import static com.android.ide.common.rendering.api.Result.Status.ERROR_ANIM_NOT_FOUND; 20 import static com.android.ide.common.rendering.api.Result.Status.ERROR_INFLATION; 21 import static com.android.ide.common.rendering.api.Result.Status.ERROR_NOT_INFLATED; 22 import static com.android.ide.common.rendering.api.Result.Status.ERROR_UNKNOWN; 23 import static com.android.ide.common.rendering.api.Result.Status.ERROR_VIEWGROUP_NO_CHILDREN; 24 import static com.android.ide.common.rendering.api.Result.Status.SUCCESS; 25 26 import com.android.ide.common.rendering.api.AdapterBinding; 27 import com.android.ide.common.rendering.api.HardwareConfig; 28 import com.android.ide.common.rendering.api.IAnimationListener; 29 import com.android.ide.common.rendering.api.ILayoutPullParser; 30 import com.android.ide.common.rendering.api.IProjectCallback; 31 import com.android.ide.common.rendering.api.RenderParams; 32 import com.android.ide.common.rendering.api.RenderResources; 33 import com.android.ide.common.rendering.api.RenderSession; 34 import com.android.ide.common.rendering.api.ResourceReference; 35 import com.android.ide.common.rendering.api.ResourceValue; 36 import com.android.ide.common.rendering.api.Result; 37 import com.android.ide.common.rendering.api.Result.Status; 38 import com.android.ide.common.rendering.api.SessionParams; 39 import com.android.ide.common.rendering.api.SessionParams.RenderingMode; 40 import com.android.ide.common.rendering.api.ViewInfo; 41 import com.android.internal.util.XmlUtils; 42 import com.android.layoutlib.bridge.Bridge; 43 import com.android.layoutlib.bridge.android.BridgeContext; 44 import com.android.layoutlib.bridge.android.BridgeLayoutParamsMapAttributes; 45 import com.android.layoutlib.bridge.android.BridgeXmlBlockParser; 46 import com.android.layoutlib.bridge.bars.FakeActionBar; 47 import com.android.layoutlib.bridge.bars.NavigationBar; 48 import com.android.layoutlib.bridge.bars.StatusBar; 49 import com.android.layoutlib.bridge.bars.TitleBar; 50 import com.android.layoutlib.bridge.impl.binding.FakeAdapter; 51 import com.android.layoutlib.bridge.impl.binding.FakeExpandableAdapter; 52 import com.android.resources.ResourceType; 53 import com.android.resources.ScreenOrientation; 54 import com.android.util.Pair; 55 56 import org.xmlpull.v1.XmlPullParserException; 57 58 import android.animation.AnimationThread; 59 import android.animation.Animator; 60 import android.animation.AnimatorInflater; 61 import android.animation.LayoutTransition; 62 import android.animation.LayoutTransition.TransitionListener; 63 import android.app.Fragment_Delegate; 64 import android.graphics.Bitmap; 65 import android.graphics.Bitmap_Delegate; 66 import android.graphics.Canvas; 67 import android.graphics.drawable.Drawable; 68 import android.util.DisplayMetrics; 69 import android.util.TypedValue; 70 import android.view.AttachInfo_Accessor; 71 import android.view.BridgeInflater; 72 import android.view.IWindowManager; 73 import android.view.IWindowManagerImpl; 74 import android.view.Surface; 75 import android.view.View; 76 import android.view.View.MeasureSpec; 77 import android.view.ViewGroup; 78 import android.view.ViewGroup.LayoutParams; 79 import android.view.ViewGroup.MarginLayoutParams; 80 import android.view.WindowManagerGlobal_Delegate; 81 import android.widget.AbsListView; 82 import android.widget.AbsSpinner; 83 import android.widget.AdapterView; 84 import android.widget.ExpandableListView; 85 import android.widget.FrameLayout; 86 import android.widget.LinearLayout; 87 import android.widget.ListView; 88 import android.widget.QuickContactBadge; 89 import android.widget.TabHost; 90 import android.widget.TabHost.TabSpec; 91 import android.widget.TabWidget; 92 93 import java.awt.AlphaComposite; 94 import java.awt.Color; 95 import java.awt.Graphics2D; 96 import java.awt.image.BufferedImage; 97 import java.util.ArrayList; 98 import java.util.List; 99 import java.util.Map; 100 101 /** 102 * Class implementing the render session. 103 * 104 * A session is a stateful representation of a layout file. It is initialized with data coming 105 * through the {@link Bridge} API to inflate the layout. Further actions and rendering can then 106 * be done on the layout. 107 * 108 */ 109 public class RenderSessionImpl extends RenderAction<SessionParams> { 110 111 private static final int DEFAULT_TITLE_BAR_HEIGHT = 25; 112 private static final int DEFAULT_STATUS_BAR_HEIGHT = 25; 113 114 // scene state 115 private RenderSession mScene; 116 private BridgeXmlBlockParser mBlockParser; 117 private BridgeInflater mInflater; 118 private ResourceValue mWindowBackground; 119 private ViewGroup mViewRoot; 120 private FrameLayout mContentRoot; 121 private Canvas mCanvas; 122 private int mMeasuredScreenWidth = -1; 123 private int mMeasuredScreenHeight = -1; 124 private boolean mIsAlphaChannelImage; 125 private boolean mWindowIsFloating; 126 127 private int mStatusBarSize; 128 private int mNavigationBarSize; 129 private int mNavigationBarOrientation = LinearLayout.HORIZONTAL; 130 private int mTitleBarSize; 131 private int mActionBarSize; 132 133 134 // information being returned through the API 135 private BufferedImage mImage; 136 private List<ViewInfo> mViewInfoList; 137 138 private static final class PostInflateException extends Exception { 139 private static final long serialVersionUID = 1L; 140 141 public PostInflateException(String message) { 142 super(message); 143 } 144 } 145 146 /** 147 * Creates a layout scene with all the information coming from the layout bridge API. 148 * <p> 149 * This <b>must</b> be followed by a call to {@link RenderSessionImpl#init()}, which act as a 150 * call to {@link RenderSessionImpl#acquire(long)} 151 * 152 * @see LayoutBridge#createScene(com.android.layoutlib.api.SceneParams) 153 */ 154 public RenderSessionImpl(SessionParams params) { 155 super(new SessionParams(params)); 156 } 157 158 /** 159 * Initializes and acquires the scene, creating various Android objects such as context, 160 * inflater, and parser. 161 * 162 * @param timeout the time to wait if another rendering is happening. 163 * 164 * @return whether the scene was prepared 165 * 166 * @see #acquire(long) 167 * @see #release() 168 */ 169 @Override 170 public Result init(long timeout) { 171 Result result = super.init(timeout); 172 if (result.isSuccess() == false) { 173 return result; 174 } 175 176 SessionParams params = getParams(); 177 BridgeContext context = getContext(); 178 179 RenderResources resources = getParams().getResources(); 180 DisplayMetrics metrics = getContext().getMetrics(); 181 182 // use default of true in case it's not found to use alpha by default 183 mIsAlphaChannelImage = getBooleanThemeValue(resources, 184 "windowIsFloating", true /*defaultValue*/); 185 186 mWindowIsFloating = getBooleanThemeValue(resources, "windowIsFloating", 187 true /*defaultValue*/); 188 189 findBackground(resources); 190 findStatusBar(resources, metrics); 191 findActionBar(resources, metrics); 192 findNavigationBar(resources, metrics); 193 194 // FIXME: find those out, and possibly add them to the render params 195 boolean hasNavigationBar = true; 196 IWindowManager iwm = new IWindowManagerImpl(getContext().getConfiguration(), 197 metrics, Surface.ROTATION_0, 198 hasNavigationBar); 199 WindowManagerGlobal_Delegate.setWindowManagerService(iwm); 200 201 // build the inflater and parser. 202 mInflater = new BridgeInflater(context, params.getProjectCallback()); 203 context.setBridgeInflater(mInflater); 204 205 mBlockParser = new BridgeXmlBlockParser( 206 params.getLayoutDescription(), context, false /* platformResourceFlag */); 207 208 return SUCCESS.createResult(); 209 } 210 211 /** 212 * Inflates the layout. 213 * <p> 214 * {@link #acquire(long)} must have been called before this. 215 * 216 * @throws IllegalStateException if the current context is different than the one owned by 217 * the scene, or if {@link #init(long)} was not called. 218 */ 219 public Result inflate() { 220 checkLock(); 221 222 try { 223 224 SessionParams params = getParams(); 225 HardwareConfig hardwareConfig = params.getHardwareConfig(); 226 BridgeContext context = getContext(); 227 boolean isRtl = Bridge.isLocaleRtl(params.getLocale()); 228 int direction = isRtl ? View.LAYOUT_DIRECTION_RTL : View.LAYOUT_DIRECTION_LTR; 229 230 // the view group that receives the window background. 231 ViewGroup backgroundView = null; 232 233 if (mWindowIsFloating || params.isForceNoDecor()) { 234 backgroundView = mViewRoot = mContentRoot = new FrameLayout(context); 235 mViewRoot.setLayoutDirection(direction); 236 } else { 237 if (hasSoftwareButtons() && mNavigationBarOrientation == LinearLayout.VERTICAL) { 238 /* 239 * This is a special case where the navigation bar is on the right. 240 +-------------------------------------------------+---+ 241 | Status bar (always) | | 242 +-------------------------------------------------+ | 243 | (Layout with background drawable) | | 244 | +---------------------------------------------+ | | 245 | | Title/Action bar (optional) | | | 246 | +---------------------------------------------+ | | 247 | | Content, vertical extending | | | 248 | | | | | 249 | +---------------------------------------------+ | | 250 +-------------------------------------------------+---+ 251 252 So we create a horizontal layout, with the nav bar on the right, 253 and the left part is the normal layout below without the nav bar at 254 the bottom 255 */ 256 LinearLayout topLayout = new LinearLayout(context); 257 topLayout.setLayoutDirection(direction); 258 mViewRoot = topLayout; 259 topLayout.setOrientation(LinearLayout.HORIZONTAL); 260 261 try { 262 NavigationBar navigationBar = new NavigationBar(context, 263 hardwareConfig.getDensity(), LinearLayout.VERTICAL, isRtl, 264 params.isRtlSupported()); 265 navigationBar.setLayoutParams( 266 new LinearLayout.LayoutParams( 267 mNavigationBarSize, 268 LayoutParams.MATCH_PARENT)); 269 topLayout.addView(navigationBar); 270 } catch (XmlPullParserException e) { 271 272 } 273 } 274 275 /* 276 * we're creating the following layout 277 * 278 +-------------------------------------------------+ 279 | Status bar (always) | 280 +-------------------------------------------------+ 281 | (Layout with background drawable) | 282 | +---------------------------------------------+ | 283 | | Title/Action bar (optional) | | 284 | +---------------------------------------------+ | 285 | | Content, vertical extending | | 286 | | | | 287 | +---------------------------------------------+ | 288 +-------------------------------------------------+ 289 | Navigation bar for soft buttons, maybe see above| 290 +-------------------------------------------------+ 291 292 */ 293 294 LinearLayout topLayout = new LinearLayout(context); 295 topLayout.setOrientation(LinearLayout.VERTICAL); 296 topLayout.setLayoutDirection(direction); 297 // if we don't already have a view root this is it 298 if (mViewRoot == null) { 299 mViewRoot = topLayout; 300 } else { 301 LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( 302 LayoutParams.WRAP_CONTENT, LayoutParams.MATCH_PARENT); 303 layoutParams.weight = 1; 304 topLayout.setLayoutParams(layoutParams); 305 306 // this is the case of soft buttons + vertical bar. 307 // this top layout is the first layout in the horizontal layout. see above) 308 if (isRtl && params.isRtlSupported()) { 309 // If RTL is enabled, layoutlib will mirror the layouts. So, add the 310 // topLayout to the right of Navigation Bar and layoutlib will draw it 311 // to the left. 312 mViewRoot.addView(topLayout); 313 } else { 314 // Add the top layout to the left of the Navigation Bar. 315 mViewRoot.addView(topLayout, 0); 316 } 317 } 318 319 if (mStatusBarSize > 0) { 320 // system bar 321 try { 322 StatusBar systemBar = new StatusBar(context, hardwareConfig.getDensity(), 323 direction, params.isRtlSupported()); 324 systemBar.setLayoutParams( 325 new LinearLayout.LayoutParams( 326 LayoutParams.MATCH_PARENT, mStatusBarSize)); 327 topLayout.addView(systemBar); 328 } catch (XmlPullParserException e) { 329 330 } 331 } 332 333 LinearLayout backgroundLayout = new LinearLayout(context); 334 backgroundView = backgroundLayout; 335 backgroundLayout.setOrientation(LinearLayout.VERTICAL); 336 LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams( 337 LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 338 layoutParams.weight = 1; 339 backgroundLayout.setLayoutParams(layoutParams); 340 topLayout.addView(backgroundLayout); 341 342 343 // if the theme says no title/action bar, then the size will be 0 344 if (mActionBarSize > 0) { 345 try { 346 FakeActionBar actionBar = new FakeActionBar(context, 347 hardwareConfig.getDensity(), 348 params.getAppLabel(), params.getAppIcon()); 349 actionBar.setLayoutParams( 350 new LinearLayout.LayoutParams( 351 LayoutParams.MATCH_PARENT, mActionBarSize)); 352 backgroundLayout.addView(actionBar); 353 } catch (XmlPullParserException e) { 354 355 } 356 } else if (mTitleBarSize > 0) { 357 try { 358 TitleBar titleBar = new TitleBar(context, 359 hardwareConfig.getDensity(), params.getAppLabel()); 360 titleBar.setLayoutParams( 361 new LinearLayout.LayoutParams( 362 LayoutParams.MATCH_PARENT, mTitleBarSize)); 363 backgroundLayout.addView(titleBar); 364 } catch (XmlPullParserException e) { 365 366 } 367 } 368 369 // content frame 370 mContentRoot = new FrameLayout(context); 371 layoutParams = new LinearLayout.LayoutParams( 372 LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT); 373 layoutParams.weight = 1; 374 mContentRoot.setLayoutParams(layoutParams); 375 backgroundLayout.addView(mContentRoot); 376 377 if (mNavigationBarOrientation == LinearLayout.HORIZONTAL && 378 mNavigationBarSize > 0) { 379 // system bar 380 try { 381 NavigationBar navigationBar = new NavigationBar(context, 382 hardwareConfig.getDensity(), LinearLayout.HORIZONTAL, isRtl, 383 params.isRtlSupported()); 384 navigationBar.setLayoutParams( 385 new LinearLayout.LayoutParams( 386 LayoutParams.MATCH_PARENT, mNavigationBarSize)); 387 topLayout.addView(navigationBar); 388 } catch (XmlPullParserException e) { 389 390 } 391 } 392 } 393 394 395 // Sets the project callback (custom view loader) to the fragment delegate so that 396 // it can instantiate the custom Fragment. 397 Fragment_Delegate.setProjectCallback(params.getProjectCallback()); 398 399 View view = mInflater.inflate(mBlockParser, mContentRoot); 400 401 // done with the parser, pop it. 402 context.popParser(); 403 404 Fragment_Delegate.setProjectCallback(null); 405 406 // set the AttachInfo on the root view. 407 AttachInfo_Accessor.setAttachInfo(mViewRoot); 408 409 // post-inflate process. For now this supports TabHost/TabWidget 410 postInflateProcess(view, params.getProjectCallback()); 411 412 // get the background drawable 413 if (mWindowBackground != null && backgroundView != null) { 414 Drawable d = ResourceHelper.getDrawable(mWindowBackground, context); 415 backgroundView.setBackground(d); 416 } 417 418 return SUCCESS.createResult(); 419 } catch (PostInflateException e) { 420 return ERROR_INFLATION.createResult(e.getMessage(), e); 421 } catch (Throwable e) { 422 // get the real cause of the exception. 423 Throwable t = e; 424 while (t.getCause() != null) { 425 t = t.getCause(); 426 } 427 428 return ERROR_INFLATION.createResult(t.getMessage(), t); 429 } 430 } 431 432 /** 433 * Renders the scene. 434 * <p> 435 * {@link #acquire(long)} must have been called before this. 436 * 437 * @param freshRender whether the render is a new one and should erase the existing bitmap (in 438 * the case where bitmaps are reused). This is typically needed when not playing 439 * animations.) 440 * 441 * @throws IllegalStateException if the current context is different than the one owned by 442 * the scene, or if {@link #acquire(long)} was not called. 443 * 444 * @see RenderParams#getRenderingMode() 445 * @see RenderSession#render(long) 446 */ 447 public Result render(boolean freshRender) { 448 checkLock(); 449 450 SessionParams params = getParams(); 451 452 try { 453 if (mViewRoot == null) { 454 return ERROR_NOT_INFLATED.createResult(); 455 } 456 457 RenderingMode renderingMode = params.getRenderingMode(); 458 HardwareConfig hardwareConfig = params.getHardwareConfig(); 459 460 // only do the screen measure when needed. 461 boolean newRenderSize = false; 462 if (mMeasuredScreenWidth == -1) { 463 newRenderSize = true; 464 mMeasuredScreenWidth = hardwareConfig.getScreenWidth(); 465 mMeasuredScreenHeight = hardwareConfig.getScreenHeight(); 466 467 if (renderingMode != RenderingMode.NORMAL) { 468 int widthMeasureSpecMode = renderingMode.isHorizExpand() ? 469 MeasureSpec.UNSPECIFIED // this lets us know the actual needed size 470 : MeasureSpec.EXACTLY; 471 int heightMeasureSpecMode = renderingMode.isVertExpand() ? 472 MeasureSpec.UNSPECIFIED // this lets us know the actual needed size 473 : MeasureSpec.EXACTLY; 474 475 // We used to compare the measured size of the content to the screen size but 476 // this does not work anymore due to the 2 following issues: 477 // - If the content is in a decor (system bar, title/action bar), the root view 478 // will not resize even with the UNSPECIFIED because of the embedded layout. 479 // - If there is no decor, but a dialog frame, then the dialog padding prevents 480 // comparing the size of the content to the screen frame (as it would not 481 // take into account the dialog padding). 482 483 // The solution is to first get the content size in a normal rendering, inside 484 // the decor or the dialog padding. 485 // Then measure only the content with UNSPECIFIED to see the size difference 486 // and apply this to the screen size. 487 488 // first measure the full layout, with EXACTLY to get the size of the 489 // content as it is inside the decor/dialog 490 Pair<Integer, Integer> exactMeasure = measureView( 491 mViewRoot, mContentRoot.getChildAt(0), 492 mMeasuredScreenWidth, MeasureSpec.EXACTLY, 493 mMeasuredScreenHeight, MeasureSpec.EXACTLY); 494 495 // now measure the content only using UNSPECIFIED (where applicable, based on 496 // the rendering mode). This will give us the size the content needs. 497 Pair<Integer, Integer> result = measureView( 498 mContentRoot, mContentRoot.getChildAt(0), 499 mMeasuredScreenWidth, widthMeasureSpecMode, 500 mMeasuredScreenHeight, heightMeasureSpecMode); 501 502 // now look at the difference and add what is needed. 503 if (renderingMode.isHorizExpand()) { 504 int measuredWidth = exactMeasure.getFirst(); 505 int neededWidth = result.getFirst(); 506 if (neededWidth > measuredWidth) { 507 mMeasuredScreenWidth += neededWidth - measuredWidth; 508 } 509 } 510 511 if (renderingMode.isVertExpand()) { 512 int measuredHeight = exactMeasure.getSecond(); 513 int neededHeight = result.getSecond(); 514 if (neededHeight > measuredHeight) { 515 mMeasuredScreenHeight += neededHeight - measuredHeight; 516 } 517 } 518 } 519 } 520 521 // measure again with the size we need 522 // This must always be done before the call to layout 523 measureView(mViewRoot, null /*measuredView*/, 524 mMeasuredScreenWidth, MeasureSpec.EXACTLY, 525 mMeasuredScreenHeight, MeasureSpec.EXACTLY); 526 527 // now do the layout. 528 mViewRoot.layout(0, 0, mMeasuredScreenWidth, mMeasuredScreenHeight); 529 530 if (params.isLayoutOnly()) { 531 // delete the canvas and image to reset them on the next full rendering 532 mImage = null; 533 mCanvas = null; 534 } else { 535 AttachInfo_Accessor.dispatchOnPreDraw(mViewRoot); 536 537 // draw the views 538 // create the BufferedImage into which the layout will be rendered. 539 boolean newImage = false; 540 if (newRenderSize || mCanvas == null) { 541 if (params.getImageFactory() != null) { 542 mImage = params.getImageFactory().getImage( 543 mMeasuredScreenWidth, 544 mMeasuredScreenHeight); 545 } else { 546 mImage = new BufferedImage( 547 mMeasuredScreenWidth, 548 mMeasuredScreenHeight, 549 BufferedImage.TYPE_INT_ARGB); 550 newImage = true; 551 } 552 553 if (params.isBgColorOverridden()) { 554 // since we override the content, it's the same as if it was a new image. 555 newImage = true; 556 Graphics2D gc = mImage.createGraphics(); 557 gc.setColor(new Color(params.getOverrideBgColor(), true)); 558 gc.setComposite(AlphaComposite.Src); 559 gc.fillRect(0, 0, mMeasuredScreenWidth, mMeasuredScreenHeight); 560 gc.dispose(); 561 } 562 563 // create an Android bitmap around the BufferedImage 564 Bitmap bitmap = Bitmap_Delegate.createBitmap(mImage, 565 true /*isMutable*/, hardwareConfig.getDensity()); 566 567 // create a Canvas around the Android bitmap 568 mCanvas = new Canvas(bitmap); 569 mCanvas.setDensity(hardwareConfig.getDensity().getDpiValue()); 570 } 571 572 if (freshRender && newImage == false) { 573 Graphics2D gc = mImage.createGraphics(); 574 gc.setComposite(AlphaComposite.Src); 575 576 gc.setColor(new Color(0x00000000, true)); 577 gc.fillRect(0, 0, 578 mMeasuredScreenWidth, mMeasuredScreenHeight); 579 580 // done 581 gc.dispose(); 582 } 583 584 mViewRoot.draw(mCanvas); 585 } 586 587 mViewInfoList = startVisitingViews(mViewRoot, 0, params.getExtendedViewInfoMode()); 588 589 // success! 590 return SUCCESS.createResult(); 591 } catch (Throwable e) { 592 // get the real cause of the exception. 593 Throwable t = e; 594 while (t.getCause() != null) { 595 t = t.getCause(); 596 } 597 598 return ERROR_UNKNOWN.createResult(t.getMessage(), t); 599 } 600 } 601 602 /** 603 * Executes {@link View#measure(int, int)} on a given view with the given parameters (used 604 * to create measure specs with {@link MeasureSpec#makeMeasureSpec(int, int)}. 605 * 606 * if <var>measuredView</var> is non null, the method returns a {@link Pair} of (width, height) 607 * for the view (using {@link View#getMeasuredWidth()} and {@link View#getMeasuredHeight()}). 608 * 609 * @param viewToMeasure the view on which to execute measure(). 610 * @param measuredView if non null, the view to query for its measured width/height. 611 * @param width the width to use in the MeasureSpec. 612 * @param widthMode the MeasureSpec mode to use for the width. 613 * @param height the height to use in the MeasureSpec. 614 * @param heightMode the MeasureSpec mode to use for the height. 615 * @return the measured width/height if measuredView is non-null, null otherwise. 616 */ 617 private Pair<Integer, Integer> measureView(ViewGroup viewToMeasure, View measuredView, 618 int width, int widthMode, int height, int heightMode) { 619 int w_spec = MeasureSpec.makeMeasureSpec(width, widthMode); 620 int h_spec = MeasureSpec.makeMeasureSpec(height, heightMode); 621 viewToMeasure.measure(w_spec, h_spec); 622 623 if (measuredView != null) { 624 return Pair.of(measuredView.getMeasuredWidth(), measuredView.getMeasuredHeight()); 625 } 626 627 return null; 628 } 629 630 /** 631 * Animate an object 632 * <p> 633 * {@link #acquire(long)} must have been called before this. 634 * 635 * @throws IllegalStateException if the current context is different than the one owned by 636 * the scene, or if {@link #acquire(long)} was not called. 637 * 638 * @see RenderSession#animate(Object, String, boolean, IAnimationListener) 639 */ 640 public Result animate(Object targetObject, String animationName, 641 boolean isFrameworkAnimation, IAnimationListener listener) { 642 checkLock(); 643 644 BridgeContext context = getContext(); 645 646 // find the animation file. 647 ResourceValue animationResource = null; 648 int animationId = 0; 649 if (isFrameworkAnimation) { 650 animationResource = context.getRenderResources().getFrameworkResource( 651 ResourceType.ANIMATOR, animationName); 652 if (animationResource != null) { 653 animationId = Bridge.getResourceId(ResourceType.ANIMATOR, animationName); 654 } 655 } else { 656 animationResource = context.getRenderResources().getProjectResource( 657 ResourceType.ANIMATOR, animationName); 658 if (animationResource != null) { 659 animationId = context.getProjectCallback().getResourceId( 660 ResourceType.ANIMATOR, animationName); 661 } 662 } 663 664 if (animationResource != null) { 665 try { 666 Animator anim = AnimatorInflater.loadAnimator(context, animationId); 667 if (anim != null) { 668 anim.setTarget(targetObject); 669 670 new PlayAnimationThread(anim, this, animationName, listener).start(); 671 672 return SUCCESS.createResult(); 673 } 674 } catch (Exception e) { 675 // get the real cause of the exception. 676 Throwable t = e; 677 while (t.getCause() != null) { 678 t = t.getCause(); 679 } 680 681 return ERROR_UNKNOWN.createResult(t.getMessage(), t); 682 } 683 } 684 685 return ERROR_ANIM_NOT_FOUND.createResult(); 686 } 687 688 /** 689 * Insert a new child into an existing parent. 690 * <p> 691 * {@link #acquire(long)} must have been called before this. 692 * 693 * @throws IllegalStateException if the current context is different than the one owned by 694 * the scene, or if {@link #acquire(long)} was not called. 695 * 696 * @see RenderSession#insertChild(Object, ILayoutPullParser, int, IAnimationListener) 697 */ 698 public Result insertChild(final ViewGroup parentView, ILayoutPullParser childXml, 699 final int index, IAnimationListener listener) { 700 checkLock(); 701 702 BridgeContext context = getContext(); 703 704 // create a block parser for the XML 705 BridgeXmlBlockParser blockParser = new BridgeXmlBlockParser( 706 childXml, context, false /* platformResourceFlag */); 707 708 // inflate the child without adding it to the root since we want to control where it'll 709 // get added. We do pass the parentView however to ensure that the layoutParams will 710 // be created correctly. 711 final View child = mInflater.inflate(blockParser, parentView, false /*attachToRoot*/); 712 blockParser.ensurePopped(); 713 714 invalidateRenderingSize(); 715 716 if (listener != null) { 717 new AnimationThread(this, "insertChild", listener) { 718 719 @Override 720 public Result preAnimation() { 721 parentView.setLayoutTransition(new LayoutTransition()); 722 return addView(parentView, child, index); 723 } 724 725 @Override 726 public void postAnimation() { 727 parentView.setLayoutTransition(null); 728 } 729 }.start(); 730 731 // always return success since the real status will come through the listener. 732 return SUCCESS.createResult(child); 733 } 734 735 // add it to the parentView in the correct location 736 Result result = addView(parentView, child, index); 737 if (result.isSuccess() == false) { 738 return result; 739 } 740 741 result = render(false /*freshRender*/); 742 if (result.isSuccess()) { 743 result = result.getCopyWithData(child); 744 } 745 746 return result; 747 } 748 749 /** 750 * Adds a given view to a given parent at a given index. 751 * 752 * @param parent the parent to receive the view 753 * @param view the view to add to the parent 754 * @param index the index where to do the add. 755 * 756 * @return a Result with {@link Status#SUCCESS} or 757 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 758 * adding views. 759 */ 760 private Result addView(ViewGroup parent, View view, int index) { 761 try { 762 parent.addView(view, index); 763 return SUCCESS.createResult(); 764 } catch (UnsupportedOperationException e) { 765 // looks like this is a view class that doesn't support children manipulation! 766 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 767 } 768 } 769 770 /** 771 * Moves a view to a new parent at a given location 772 * <p> 773 * {@link #acquire(long)} must have been called before this. 774 * 775 * @throws IllegalStateException if the current context is different than the one owned by 776 * the scene, or if {@link #acquire(long)} was not called. 777 * 778 * @see RenderSession#moveChild(Object, Object, int, Map, IAnimationListener) 779 */ 780 public Result moveChild(final ViewGroup newParentView, final View childView, final int index, 781 Map<String, String> layoutParamsMap, final IAnimationListener listener) { 782 checkLock(); 783 784 invalidateRenderingSize(); 785 786 LayoutParams layoutParams = null; 787 if (layoutParamsMap != null) { 788 // need to create a new LayoutParams object for the new parent. 789 layoutParams = newParentView.generateLayoutParams( 790 new BridgeLayoutParamsMapAttributes(layoutParamsMap)); 791 } 792 793 // get the current parent of the view that needs to be moved. 794 final ViewGroup previousParent = (ViewGroup) childView.getParent(); 795 796 if (listener != null) { 797 final LayoutParams params = layoutParams; 798 799 // there is no support for animating views across layouts, so in case the new and old 800 // parent views are different we fake the animation through a no animation thread. 801 if (previousParent != newParentView) { 802 new Thread("not animated moveChild") { 803 @Override 804 public void run() { 805 Result result = moveView(previousParent, newParentView, childView, index, 806 params); 807 if (result.isSuccess() == false) { 808 listener.done(result); 809 } 810 811 // ready to do the work, acquire the scene. 812 result = acquire(250); 813 if (result.isSuccess() == false) { 814 listener.done(result); 815 return; 816 } 817 818 try { 819 result = render(false /*freshRender*/); 820 if (result.isSuccess()) { 821 listener.onNewFrame(RenderSessionImpl.this.getSession()); 822 } 823 } finally { 824 release(); 825 } 826 827 listener.done(result); 828 } 829 }.start(); 830 } else { 831 new AnimationThread(this, "moveChild", listener) { 832 833 @Override 834 public Result preAnimation() { 835 // set up the transition for the parent. 836 LayoutTransition transition = new LayoutTransition(); 837 previousParent.setLayoutTransition(transition); 838 839 // tweak the animation durations and start delays (to match the duration of 840 // animation playing just before). 841 // Note: Cannot user Animation.setDuration() directly. Have to set it 842 // on the LayoutTransition. 843 transition.setDuration(LayoutTransition.DISAPPEARING, 100); 844 // CHANGE_DISAPPEARING plays after DISAPPEARING 845 transition.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 100); 846 847 transition.setDuration(LayoutTransition.CHANGE_DISAPPEARING, 100); 848 849 transition.setDuration(LayoutTransition.CHANGE_APPEARING, 100); 850 // CHANGE_APPEARING plays after CHANGE_APPEARING 851 transition.setStartDelay(LayoutTransition.APPEARING, 100); 852 853 transition.setDuration(LayoutTransition.APPEARING, 100); 854 855 return moveView(previousParent, newParentView, childView, index, params); 856 } 857 858 @Override 859 public void postAnimation() { 860 previousParent.setLayoutTransition(null); 861 newParentView.setLayoutTransition(null); 862 } 863 }.start(); 864 } 865 866 // always return success since the real status will come through the listener. 867 return SUCCESS.createResult(layoutParams); 868 } 869 870 Result result = moveView(previousParent, newParentView, childView, index, layoutParams); 871 if (result.isSuccess() == false) { 872 return result; 873 } 874 875 result = render(false /*freshRender*/); 876 if (layoutParams != null && result.isSuccess()) { 877 result = result.getCopyWithData(layoutParams); 878 } 879 880 return result; 881 } 882 883 /** 884 * Moves a View from its current parent to a new given parent at a new given location, with 885 * an optional new {@link LayoutParams} instance 886 * 887 * @param previousParent the previous parent, still owning the child at the time of the call. 888 * @param newParent the new parent 889 * @param movedView the view to move 890 * @param index the new location in the new parent 891 * @param params an option (can be null) {@link LayoutParams} instance. 892 * 893 * @return a Result with {@link Status#SUCCESS} or 894 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 895 * adding views. 896 */ 897 private Result moveView(ViewGroup previousParent, final ViewGroup newParent, 898 final View movedView, final int index, final LayoutParams params) { 899 try { 900 // check if there is a transition on the previousParent. 901 LayoutTransition previousTransition = previousParent.getLayoutTransition(); 902 if (previousTransition != null) { 903 // in this case there is an animation. This means we have to wait for the child's 904 // parent reference to be null'ed out so that we can add it to the new parent. 905 // It is technically removed right before the DISAPPEARING animation is done (if 906 // the animation of this type is not null, otherwise it's after which is impossible 907 // to handle). 908 // Because there is no move animation, if the new parent is the same as the old 909 // parent, we need to wait until the CHANGE_DISAPPEARING animation is done before 910 // adding the child or the child will appear in its new location before the 911 // other children have made room for it. 912 913 // add a listener to the transition to be notified of the actual removal. 914 previousTransition.addTransitionListener(new TransitionListener() { 915 private int mChangeDisappearingCount = 0; 916 917 @Override 918 public void startTransition(LayoutTransition transition, ViewGroup container, 919 View view, int transitionType) { 920 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING) { 921 mChangeDisappearingCount++; 922 } 923 } 924 925 @Override 926 public void endTransition(LayoutTransition transition, ViewGroup container, 927 View view, int transitionType) { 928 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING) { 929 mChangeDisappearingCount--; 930 } 931 932 if (transitionType == LayoutTransition.CHANGE_DISAPPEARING && 933 mChangeDisappearingCount == 0) { 934 // add it to the parentView in the correct location 935 if (params != null) { 936 newParent.addView(movedView, index, params); 937 } else { 938 newParent.addView(movedView, index); 939 } 940 } 941 } 942 }); 943 944 // remove the view from the current parent. 945 previousParent.removeView(movedView); 946 947 // and return since adding the view to the new parent is done in the listener. 948 return SUCCESS.createResult(); 949 } else { 950 // standard code with no animation. pretty simple. 951 previousParent.removeView(movedView); 952 953 // add it to the parentView in the correct location 954 if (params != null) { 955 newParent.addView(movedView, index, params); 956 } else { 957 newParent.addView(movedView, index); 958 } 959 960 return SUCCESS.createResult(); 961 } 962 } catch (UnsupportedOperationException e) { 963 // looks like this is a view class that doesn't support children manipulation! 964 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 965 } 966 } 967 968 /** 969 * Removes a child from its current parent. 970 * <p> 971 * {@link #acquire(long)} must have been called before this. 972 * 973 * @throws IllegalStateException if the current context is different than the one owned by 974 * the scene, or if {@link #acquire(long)} was not called. 975 * 976 * @see RenderSession#removeChild(Object, IAnimationListener) 977 */ 978 public Result removeChild(final View childView, IAnimationListener listener) { 979 checkLock(); 980 981 invalidateRenderingSize(); 982 983 final ViewGroup parent = (ViewGroup) childView.getParent(); 984 985 if (listener != null) { 986 new AnimationThread(this, "moveChild", listener) { 987 988 @Override 989 public Result preAnimation() { 990 parent.setLayoutTransition(new LayoutTransition()); 991 return removeView(parent, childView); 992 } 993 994 @Override 995 public void postAnimation() { 996 parent.setLayoutTransition(null); 997 } 998 }.start(); 999 1000 // always return success since the real status will come through the listener. 1001 return SUCCESS.createResult(); 1002 } 1003 1004 Result result = removeView(parent, childView); 1005 if (result.isSuccess() == false) { 1006 return result; 1007 } 1008 1009 return render(false /*freshRender*/); 1010 } 1011 1012 /** 1013 * Removes a given view from its current parent. 1014 * 1015 * @param view the view to remove from its parent 1016 * 1017 * @return a Result with {@link Status#SUCCESS} or 1018 * {@link Status#ERROR_VIEWGROUP_NO_CHILDREN} if the given parent doesn't support 1019 * adding views. 1020 */ 1021 private Result removeView(ViewGroup parent, View view) { 1022 try { 1023 parent.removeView(view); 1024 return SUCCESS.createResult(); 1025 } catch (UnsupportedOperationException e) { 1026 // looks like this is a view class that doesn't support children manipulation! 1027 return ERROR_VIEWGROUP_NO_CHILDREN.createResult(); 1028 } 1029 } 1030 1031 1032 private void findBackground(RenderResources resources) { 1033 if (getParams().isBgColorOverridden() == false) { 1034 mWindowBackground = resources.findItemInTheme("windowBackground", 1035 true /*isFrameworkAttr*/); 1036 if (mWindowBackground != null) { 1037 mWindowBackground = resources.resolveResValue(mWindowBackground); 1038 } 1039 } 1040 } 1041 1042 private boolean hasSoftwareButtons() { 1043 return getParams().getHardwareConfig().hasSoftwareButtons(); 1044 } 1045 1046 private void findStatusBar(RenderResources resources, DisplayMetrics metrics) { 1047 boolean windowFullscreen = getBooleanThemeValue(resources, 1048 "windowFullscreen", false /*defaultValue*/); 1049 1050 if (windowFullscreen == false && mWindowIsFloating == false) { 1051 // default value 1052 mStatusBarSize = DEFAULT_STATUS_BAR_HEIGHT; 1053 1054 // get the real value 1055 ResourceValue value = resources.getFrameworkResource(ResourceType.DIMEN, 1056 "status_bar_height"); 1057 1058 if (value != null) { 1059 TypedValue typedValue = ResourceHelper.getValue("status_bar_height", 1060 value.getValue(), true /*requireUnit*/); 1061 if (typedValue != null) { 1062 // compute the pixel value based on the display metrics 1063 mStatusBarSize = (int)typedValue.getDimension(metrics); 1064 } 1065 } 1066 } 1067 } 1068 1069 private void findActionBar(RenderResources resources, DisplayMetrics metrics) { 1070 if (mWindowIsFloating) { 1071 return; 1072 } 1073 1074 boolean windowActionBar = getBooleanThemeValue(resources, 1075 "windowActionBar", true /*defaultValue*/); 1076 1077 // if there's a value and it's false (default is true) 1078 if (windowActionBar) { 1079 1080 // default size of the window title bar 1081 mActionBarSize = DEFAULT_TITLE_BAR_HEIGHT; 1082 1083 // get value from the theme. 1084 ResourceValue value = resources.findItemInTheme("actionBarSize", 1085 true /*isFrameworkAttr*/); 1086 1087 // resolve it 1088 value = resources.resolveResValue(value); 1089 1090 if (value != null) { 1091 // get the numerical value, if available 1092 TypedValue typedValue = ResourceHelper.getValue("actionBarSize", value.getValue(), 1093 true /*requireUnit*/); 1094 if (typedValue != null) { 1095 // compute the pixel value based on the display metrics 1096 mActionBarSize = (int)typedValue.getDimension(metrics); 1097 } 1098 } 1099 } else { 1100 // action bar overrides title bar so only look for this one if action bar is hidden 1101 boolean windowNoTitle = getBooleanThemeValue(resources, 1102 "windowNoTitle", false /*defaultValue*/); 1103 1104 if (windowNoTitle == false) { 1105 1106 // default size of the window title bar 1107 mTitleBarSize = DEFAULT_TITLE_BAR_HEIGHT; 1108 1109 // get value from the theme. 1110 ResourceValue value = resources.findItemInTheme("windowTitleSize", 1111 true /*isFrameworkAttr*/); 1112 1113 // resolve it 1114 value = resources.resolveResValue(value); 1115 1116 if (value != null) { 1117 // get the numerical value, if available 1118 TypedValue typedValue = ResourceHelper.getValue("windowTitleSize", 1119 value.getValue(), true /*requireUnit*/); 1120 if (typedValue != null) { 1121 // compute the pixel value based on the display metrics 1122 mTitleBarSize = (int)typedValue.getDimension(metrics); 1123 } 1124 } 1125 } 1126 1127 } 1128 } 1129 1130 private void findNavigationBar(RenderResources resources, DisplayMetrics metrics) { 1131 if (hasSoftwareButtons() && mWindowIsFloating == false) { 1132 1133 // default value 1134 mNavigationBarSize = 48; // ?? 1135 1136 HardwareConfig hardwareConfig = getParams().getHardwareConfig(); 1137 1138 boolean barOnBottom = true; 1139 1140 if (hardwareConfig.getOrientation() == ScreenOrientation.LANDSCAPE) { 1141 // compute the dp of the screen. 1142 int shortSize = hardwareConfig.getScreenHeight(); 1143 1144 // compute in dp 1145 int shortSizeDp = shortSize * DisplayMetrics.DENSITY_DEFAULT / hardwareConfig.getDensity().getDpiValue(); 1146 1147 if (shortSizeDp < 600) { 1148 // 0-599dp: "phone" UI with bar on the side 1149 barOnBottom = false; 1150 } else { 1151 // 600+dp: "tablet" UI with bar on the bottom 1152 barOnBottom = true; 1153 } 1154 } 1155 1156 if (barOnBottom) { 1157 mNavigationBarOrientation = LinearLayout.HORIZONTAL; 1158 } else { 1159 mNavigationBarOrientation = LinearLayout.VERTICAL; 1160 } 1161 1162 // get the real value 1163 ResourceValue value = resources.getFrameworkResource(ResourceType.DIMEN, 1164 barOnBottom ? "navigation_bar_height" : "navigation_bar_width"); 1165 1166 if (value != null) { 1167 TypedValue typedValue = ResourceHelper.getValue("navigation_bar_height", 1168 value.getValue(), true /*requireUnit*/); 1169 if (typedValue != null) { 1170 // compute the pixel value based on the display metrics 1171 mNavigationBarSize = (int)typedValue.getDimension(metrics); 1172 } 1173 } 1174 } 1175 } 1176 1177 /** 1178 * Looks for a attribute in the current theme. The attribute is in the android 1179 * namespace. 1180 * 1181 * @param resources the render resources 1182 * @param name the name of the attribute 1183 * @param defaultValue the default value. 1184 * @return the value of the attribute or the default one if not found. 1185 */ 1186 private boolean getBooleanThemeValue(RenderResources resources, 1187 String name, boolean defaultValue) { 1188 1189 // get the title bar flag from the current theme. 1190 ResourceValue value = resources.findItemInTheme(name, true /*isFrameworkAttr*/); 1191 1192 // because it may reference something else, we resolve it. 1193 value = resources.resolveResValue(value); 1194 1195 // if there's no value, return the default. 1196 if (value == null || value.getValue() == null) { 1197 return defaultValue; 1198 } 1199 1200 return XmlUtils.convertValueToBoolean(value.getValue(), defaultValue); 1201 } 1202 1203 /** 1204 * Post process on a view hierachy that was just inflated. 1205 * <p/>At the moment this only support TabHost: If {@link TabHost} is detected, look for the 1206 * {@link TabWidget}, and the corresponding {@link FrameLayout} and make new tabs automatically 1207 * based on the content of the {@link FrameLayout}. 1208 * @param view the root view to process. 1209 * @param projectCallback callback to the project. 1210 */ 1211 private void postInflateProcess(View view, IProjectCallback projectCallback) 1212 throws PostInflateException { 1213 if (view instanceof TabHost) { 1214 setupTabHost((TabHost)view, projectCallback); 1215 } else if (view instanceof QuickContactBadge) { 1216 QuickContactBadge badge = (QuickContactBadge) view; 1217 badge.setImageToDefault(); 1218 } else if (view instanceof AdapterView<?>) { 1219 // get the view ID. 1220 int id = view.getId(); 1221 1222 BridgeContext context = getContext(); 1223 1224 // get a ResourceReference from the integer ID. 1225 ResourceReference listRef = context.resolveId(id); 1226 1227 if (listRef != null) { 1228 SessionParams params = getParams(); 1229 AdapterBinding binding = params.getAdapterBindings().get(listRef); 1230 1231 // if there was no adapter binding, trying to get it from the call back. 1232 if (binding == null) { 1233 binding = params.getProjectCallback().getAdapterBinding(listRef, 1234 context.getViewKey(view), view); 1235 } 1236 1237 if (binding != null) { 1238 1239 if (view instanceof AbsListView) { 1240 if ((binding.getFooterCount() > 0 || binding.getHeaderCount() > 0) && 1241 view instanceof ListView) { 1242 ListView list = (ListView) view; 1243 1244 boolean skipCallbackParser = false; 1245 1246 int count = binding.getHeaderCount(); 1247 for (int i = 0 ; i < count ; i++) { 1248 Pair<View, Boolean> pair = context.inflateView( 1249 binding.getHeaderAt(i), 1250 list, false /*attachToRoot*/, skipCallbackParser); 1251 if (pair.getFirst() != null) { 1252 list.addHeaderView(pair.getFirst()); 1253 } 1254 1255 skipCallbackParser |= pair.getSecond(); 1256 } 1257 1258 count = binding.getFooterCount(); 1259 for (int i = 0 ; i < count ; i++) { 1260 Pair<View, Boolean> pair = context.inflateView( 1261 binding.getFooterAt(i), 1262 list, false /*attachToRoot*/, skipCallbackParser); 1263 if (pair.getFirst() != null) { 1264 list.addFooterView(pair.getFirst()); 1265 } 1266 1267 skipCallbackParser |= pair.getSecond(); 1268 } 1269 } 1270 1271 if (view instanceof ExpandableListView) { 1272 ((ExpandableListView) view).setAdapter( 1273 new FakeExpandableAdapter( 1274 listRef, binding, params.getProjectCallback())); 1275 } else { 1276 ((AbsListView) view).setAdapter( 1277 new FakeAdapter( 1278 listRef, binding, params.getProjectCallback())); 1279 } 1280 } else if (view instanceof AbsSpinner) { 1281 ((AbsSpinner) view).setAdapter( 1282 new FakeAdapter( 1283 listRef, binding, params.getProjectCallback())); 1284 } 1285 } 1286 } 1287 } else if (view instanceof ViewGroup) { 1288 ViewGroup group = (ViewGroup)view; 1289 final int count = group.getChildCount(); 1290 for (int c = 0 ; c < count ; c++) { 1291 View child = group.getChildAt(c); 1292 postInflateProcess(child, projectCallback); 1293 } 1294 } 1295 } 1296 1297 /** 1298 * Sets up a {@link TabHost} object. 1299 * @param tabHost the TabHost to setup. 1300 * @param projectCallback The project callback object to access the project R class. 1301 * @throws PostInflateException 1302 */ 1303 private void setupTabHost(TabHost tabHost, IProjectCallback projectCallback) 1304 throws PostInflateException { 1305 // look for the TabWidget, and the FrameLayout. They have their own specific names 1306 View v = tabHost.findViewById(android.R.id.tabs); 1307 1308 if (v == null) { 1309 throw new PostInflateException( 1310 "TabHost requires a TabWidget with id \"android:id/tabs\".\n"); 1311 } 1312 1313 if ((v instanceof TabWidget) == false) { 1314 throw new PostInflateException(String.format( 1315 "TabHost requires a TabWidget with id \"android:id/tabs\".\n" + 1316 "View found with id 'tabs' is '%s'", v.getClass().getCanonicalName())); 1317 } 1318 1319 v = tabHost.findViewById(android.R.id.tabcontent); 1320 1321 if (v == null) { 1322 // TODO: see if we can fake tabs even without the FrameLayout (same below when the framelayout is empty) 1323 throw new PostInflateException( 1324 "TabHost requires a FrameLayout with id \"android:id/tabcontent\"."); 1325 } 1326 1327 if ((v instanceof FrameLayout) == false) { 1328 throw new PostInflateException(String.format( 1329 "TabHost requires a FrameLayout with id \"android:id/tabcontent\".\n" + 1330 "View found with id 'tabcontent' is '%s'", v.getClass().getCanonicalName())); 1331 } 1332 1333 FrameLayout content = (FrameLayout)v; 1334 1335 // now process the content of the framelayout and dynamically create tabs for it. 1336 final int count = content.getChildCount(); 1337 1338 // this must be called before addTab() so that the TabHost searches its TabWidget 1339 // and FrameLayout. 1340 tabHost.setup(); 1341 1342 if (count == 0) { 1343 // Create a dummy child to get a single tab 1344 TabSpec spec = tabHost.newTabSpec("tag").setIndicator("Tab Label", 1345 tabHost.getResources().getDrawable(android.R.drawable.ic_menu_info_details)) 1346 .setContent(new TabHost.TabContentFactory() { 1347 @Override 1348 public View createTabContent(String tag) { 1349 return new LinearLayout(getContext()); 1350 } 1351 }); 1352 tabHost.addTab(spec); 1353 return; 1354 } else { 1355 // for each child of the framelayout, add a new TabSpec 1356 for (int i = 0 ; i < count ; i++) { 1357 View child = content.getChildAt(i); 1358 String tabSpec = String.format("tab_spec%d", i+1); 1359 int id = child.getId(); 1360 Pair<ResourceType, String> resource = projectCallback.resolveResourceId(id); 1361 String name; 1362 if (resource != null) { 1363 name = resource.getSecond(); 1364 } else { 1365 name = String.format("Tab %d", i+1); // default name if id is unresolved. 1366 } 1367 tabHost.addTab(tabHost.newTabSpec(tabSpec).setIndicator(name).setContent(id)); 1368 } 1369 } 1370 } 1371 1372 private List<ViewInfo> startVisitingViews(View view, int offset, boolean setExtendedInfo) { 1373 if (view == null) { 1374 return null; 1375 } 1376 1377 // adjust the offset to this view. 1378 offset += view.getTop(); 1379 1380 if (view == mContentRoot) { 1381 return visitAllChildren(mContentRoot, offset, setExtendedInfo); 1382 } 1383 1384 // otherwise, look for mContentRoot in the children 1385 if (view instanceof ViewGroup) { 1386 ViewGroup group = ((ViewGroup) view); 1387 1388 for (int i = 0; i < group.getChildCount(); i++) { 1389 List<ViewInfo> list = startVisitingViews(group.getChildAt(i), offset, 1390 setExtendedInfo); 1391 if (list != null) { 1392 return list; 1393 } 1394 } 1395 } 1396 1397 return null; 1398 } 1399 1400 /** 1401 * Visits a View and its children and generate a {@link ViewInfo} containing the 1402 * bounds of all the views. 1403 * @param view the root View 1404 * @param offset an offset for the view bounds. 1405 * @param setExtendedInfo whether to set the extended view info in the {@link ViewInfo} object. 1406 */ 1407 private ViewInfo visit(View view, int offset, boolean setExtendedInfo) { 1408 if (view == null) { 1409 return null; 1410 } 1411 1412 ViewInfo result = new ViewInfo(view.getClass().getName(), 1413 getContext().getViewKey(view), 1414 view.getLeft(), view.getTop() + offset, view.getRight(), view.getBottom() + offset, 1415 view, view.getLayoutParams()); 1416 1417 if (setExtendedInfo) { 1418 MarginLayoutParams marginParams = null; 1419 LayoutParams params = view.getLayoutParams(); 1420 if (params instanceof MarginLayoutParams) { 1421 marginParams = (MarginLayoutParams) params; 1422 } 1423 result.setExtendedInfo(view.getBaseline(), 1424 marginParams != null ? marginParams.leftMargin : 0, 1425 marginParams != null ? marginParams.topMargin : 0, 1426 marginParams != null ? marginParams.rightMargin : 0, 1427 marginParams != null ? marginParams.bottomMargin : 0); 1428 } 1429 1430 if (view instanceof ViewGroup) { 1431 ViewGroup group = ((ViewGroup) view); 1432 result.setChildren(visitAllChildren(group, 0 /*offset*/, setExtendedInfo)); 1433 } 1434 1435 return result; 1436 } 1437 1438 /** 1439 * Visits all the children of a given ViewGroup generate a list of {@link ViewInfo} 1440 * containing the bounds of all the views. 1441 * @param view the root View 1442 * @param offset an offset for the view bounds. 1443 * @param setExtendedInfo whether to set the extended view info in the {@link ViewInfo} object. 1444 */ 1445 private List<ViewInfo> visitAllChildren(ViewGroup viewGroup, int offset, 1446 boolean setExtendedInfo) { 1447 if (viewGroup == null) { 1448 return null; 1449 } 1450 1451 List<ViewInfo> children = new ArrayList<ViewInfo>(); 1452 for (int i = 0; i < viewGroup.getChildCount(); i++) { 1453 children.add(visit(viewGroup.getChildAt(i), offset, setExtendedInfo)); 1454 } 1455 return children; 1456 } 1457 1458 1459 private void invalidateRenderingSize() { 1460 mMeasuredScreenWidth = mMeasuredScreenHeight = -1; 1461 } 1462 1463 public BufferedImage getImage() { 1464 return mImage; 1465 } 1466 1467 public boolean isAlphaChannelImage() { 1468 return mIsAlphaChannelImage; 1469 } 1470 1471 public List<ViewInfo> getViewInfos() { 1472 return mViewInfoList; 1473 } 1474 1475 public Map<String, String> getDefaultProperties(Object viewObject) { 1476 return getContext().getDefaultPropMap(viewObject); 1477 } 1478 1479 public void setScene(RenderSession session) { 1480 mScene = session; 1481 } 1482 1483 public RenderSession getSession() { 1484 return mScene; 1485 } 1486 } 1487
